looop

Loops in Dart are used to repeat a block of code as long as a specified condition is true. Dart provides several types of loops, including for, while, and do-while loops, each suited to different scenarios.

Let’s go over each type of loop with examples.

1. For Loop

The for loop is useful when you know how many times you want to repeat a block of code.

Syntax:

for (initialization; condition; increment/decrement) {

  // code to execute

}

Example:

void main() {

  for (int i = 1; i <= 5; i++) {

    print("Iteration $i");

  }

}

In this example:

• int i = 1 initializes the loop counter.

• i <= 5 is the condition; the loop will continue as long as this is true.

• i++ increments the counter by 1 after each iteration.

2. For-in Loop

The for-in loop is useful for iterating over elements in a collection, like a List or Set.

Example:

void main() {

  List<String> fruits = ["Apple", "Banana", "Cherry"];

  for (String fruit in fruits) {

    print(fruit);

  }

}

In this example, each element in the fruits list is assigned to fruit in each iteration, and the fruit is printed.

3. ForEach Loop

Dart also provides a forEach method for collections (like lists, sets, etc.), which is similar to the for-in loop. You can use an anonymous function or a named function with forEach.

Example:

void main() {

  List<int> numbers = [1, 2, 3, 4];

  numbers.forEach((number) {

    print(number * 2);

  });

}

4. While Loop

The while loop repeats as long as a specified condition is true. It’s typically used when the number of iterations is not known in advance.

Syntax:

while (condition) {

  // code to execute

}

Example:

void main() {

  int i = 1;

  while (i <= 5) {

    print("Iteration $i");

    i++; // increment the counter

  }

}

In this example:

• The loop runs as long as i <= 5 is true.

• After each iteration, i is incremented by 1.

5. Do-While Loop

The do-while loop is similar to the while loop, but it guarantees at least one iteration because the condition is evaluated after the loop body.

Syntax:

do {

  // code to execute

} while (condition);

Example:

void main() {

  int i = 1;

  do {

    print("Iteration $i");

    i++;

  } while (i <= 5);

}

In this example:

• The loop will execute once even if the condition i <= 5 is false initially.

6. Break and Continue

• break: Exits the loop immediately.

• continue: Skips the current iteration and proceeds to the next.

Example:

void main() {

  for (int i = 1; i <= 5; i++) {

    if (i == 3) {

      continue; // skip this iteration when i == 3

    }

    if (i == 4) {

      break; // exit the loop when i == 4

    }

    print("Iteration $i");

  }

}

In this example:

• When i is 3, the continue statement skips the iteration, so 3 is not printed.

• When i is 4, the break statement exits the loop entirely.

Summary

Loops in Dart, like for, for-in, while, and do-while, provide control over how code is repeated, either a fixed number of times, for each item in a collection, or until a certain condition changes. Using break and continue within loops gives you additional control over the loop’s behavior.

void main()

{

 for(int i=0;i<=5;i++)

 {

  print(i);

 }

}

WADP  that accepts an integer (n) and computes the value of n+nn+nnn. (For in Loop)
Code -
import 'dart:io';

void main() {

 var sum = 0;

 dynamic n = stdin.readLineSync();

 var numberList = [n, n * 2, n * 3];

 for (var x in numberList) {

   sum += int.parse(x);

   print(sum);

 }

}

WADP  to sum of the first n positive integers.

import 'dart:io';

main()

{

 print('Enter a number:');

 var number = int.parse(stdin.readLineSync()!);

 var sum = 0;

 for (var x=1; x<=number; x++)

 {

   sum += x;

 }

 print('The sum is ${sum}');

}

------------------------------------------------------------------------------------------------------------------------------

1. Print Numbers 1 to 10

void main()

{

 for (int i = 1; i <= 10; i++)

 {

   print(i);

 }

 // Output: 1 2 3 4 5 6 7 8 9 10

}

2. Sum of Numbers from 1 to 100

void main()

{

 int sum=0;

 for(int i=0; i<=100; i++){

   sum+=i;

 }

 print('Sum: $sum');

}

3. Print Even Numbers from 1 to 20

void main()

{

 for(int i=2; i<=20 ; i+=2){

   print('$i');

 }

}

4. Print Multiplication Table of 5

void main()

{

 int n=5;

 for(int i=1; i<=10; i++)

   {

     print('${n*i}');

   }

}

  // Output:

  // 5 x 1 = 5

  // 5 x 2 = 10

  // ...

}

5. Print Squares of Numbers from 1 to 5

void main()

{

 for(int i=1; i<=5; i++)

   {

     print('Squire of $i: ${i*i}');

   }

}

  // Output: Square of 1: 1

  // Square of 2: 4

  // Square of 3: 9

}

6. Find Factorial of a Number

void main()

{

 int n=5;

 int fact=1;

 for(int i=1; i<=n; i++)

   {

     fact*=i;

   }

 print('Factorial of No: $fact');

}

7. Print Odd Numbers from 1 to 15

void main()

{

 for(int i=0; i<=15; i++)

   {

     if(i%2!=0){

       print(i);

     }

   }

}

8. Reverse a List Using a for Loop

void main()

{

 List<int> no=[1,2,3,4,5];

 for(int i=no.length-1; i>=0; i--){

   print(no[i]);

 }

}

9. Print a Pattern of Stars

import 'dart:io';

main()

{

 for(int i=1; i<=5; i++)

 {

   for(int j=1; j<=5; j++){

     if(j<=i)

       stdout.write('*');

     else

       stdout.write(' ');

   }

   print(' ');

 }

}

10. Iterate Over a List of Strings

void main() {

 List<String> fruits = ["Apple", "Banana", "Cherry", "Date", "Elderberry"];

 for (int i = 0; i < fruits.length; i++) {

   print(fruits[i]);

 }

 // Output:

 // Apple

 // Banana

 // Cherry

 // Date

 // Elderberry

}

void main()

{

 List<String> fruits = ["Apple", "Banana", "Cherry"]; //list

 for (String fruit in fruits) {

   print(fruit);

 }

}

Ex=

void main()

{

 List<String> subjects = ["DSA", "OS", "DBMS", "CN"];

 for(String sub in subjects){

   print("I love ${sub}");

 }

}

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Here are 10 Dart programs demonstrating the use of the for-in loop, which is a concise way to iterate over collections like lists, sets, and maps. The for-in loop is useful for iterating through each element of a collection without needing an index.

1. Print Elements of a List

void main()

{

 List<String> Fruits=['apple', 'banana','jack','date','Cherry'];

 for(String fruit in Fruits){

   print(fruit);

 }

}

2. Sum of Elements in a List

void main() {

 List<int> numbers = [1, 2, 3, 4, 5];

 int sum = 0;

 for (var number in numbers) {

   sum += number;

 }

 print("Sum: $sum"); // Output: Sum: 15

}

3. Print Odd Numbers from a List

void main()

{

 List<int> n=[1,2,3,4,5,6,7,8,9];

 for(int od in n){

   if(od%2 !=0){

     print('$od');

   }

 }

}

4. Iterate Over a Set

void main()

{

 Set<String> fruits={'apple','banana','cherry'};

 for(String fruit in fruits)

   {

     print('$fruit');

   }

}

5. Convert All Strings in a List to Uppercase

void main() {

 List<String> words = ['dart', 'flutter', 'programming'];

 for (var word in words) {

   print(word.toUpperCase());

 }

 // Output:

 // DART

 // FLUTTER

 // PROGRAMMING

}

6. Check if a Number Exists in a List

void main() {

 List<int> numbers = [10, 20, 30, 40, 50];

 bool found = false;

 for (var number in numbers) {

   if (number == 30) {

     found = true;

     break;

   }

 }

 if (found) {

   print("Number found!");

 } else {

   print("Number not found!");

 }

 // Output: Number found!

}

7. Print Even Numbers from a List

void main() {

 List<int> numbers = [10, 15, 20, 25, 30];

 for (var number in numbers) {

   if (number % 2 == 0) {

     print(number);

   }

 }

 // Output:

 // 10

 // 20

 // 30

}

8. Iterate Over a Map (Keys and Values)

void main()

{

 Map<int,String> students={1:'San', 2:'Pooja',3: 'Ayaan'};

 for(var entry in students.entries){

   print('${entry.key}: ${entry.value}');

 }

}

9. Concatenate Strings in a List

void main() {

 List<String> words = ['Hello', 'Dart', 'World'];

 String sentence = '';

 for (var word in words) {

   sentence += '$word ';

 }

 print(sentence.trim()); // Output: Hello Dart World

}

10. Print Index and Element in a List

void main() {

 List<String> animals = ['Lion', 'Tiger', 'Elephant'];

 for (var animal in animals) {

   print('Animal: $animal');

 }

 // Output:

 // Animal: Lion

 // Animal: Tiger

 // Animal: Elephant

}

void main() {

 Set<int> numbers = {10, 20, 30, 30};

 // Apply a function to each element in the list

 numbers.forEach((num) 

{

   print("Number: $num");

 });

}

Ex=

void main()

{

 Map<int, String> student={1:'sandeep',2:'pradeep',3:'pooja'};

 student.forEach((roll, name)

 {

   print('roll:$roll, name=$name');

 });

}

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Here are 10 Dart programs demonstrating the use of the forEach loop, which is a method available for lists, sets, and other collections. It iterates over the elements of the collection and applies a provided function for each element.

1. Print Elements of a List

void main()

{

 List<int> n=[1,2,3,4,5,6];

 n.forEach((ele){

   print(ele);

 });

}

2. Sum of Elements in a List

void main()

{

 List<int> n=[1,2,3,4,5,6];

 int sum=0;

 n.forEach((ele){

   sum+=ele;;

 });

 print('Sum: $sum');

}

3. Print Odd Numbers from a List

void main()

{

 List<int> numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];

 numbers.forEach((ele){

   if(ele%2!=0){

     print(ele);

   }

 });

}

4. Print Squares of Numbers in a List

void main() {

 List<int> numbers = [1, 2, 3, 4, 5];

 numbers.forEach((number) {

   print("Square of $number: ${number * number}");

 });

 // Output:

 // Square of 1: 1

 // Square of 2: 4

 // Square of 3: 9

 // Square of 4: 16

 // Square of 5: 25

}

5. Convert Strings in a List to Uppercase

void main() {

 List<String> words = ['dart', 'flutter', 'programming'];

 words.forEach((word) {

   print(word.toUpperCase());

 });

 // Output:

 // DART

 // FLUTTER

 // PROGRAMMING

}

6. Iterate Over a Set

void main() {

 Set<String> colors = {'Red', 'Green', 'Blue', 'Yellow'};

 colors.forEach((color) {

   print(color);

 });

 // Output:

 // Red

 // Green

 // Blue

 // Yellow

}

7. Check if a Number Exists in a List

void main() {

 List<int> numbers = [10, 20, 30, 40, 50];

 bool found = false;

 numbers.forEach((number) {

   if (number == 30) {

     found = true;

   }

 });

 if (found) {

   print("Number found!");

 } else {

   print("Number not found!");

 }

 // Output: Number found!

}

8. Print Key-Value Pairs from a Map

void main() {

 Map<String, int> age = {'Alice': 30, 'Bob': 25, 'Charlie': 35};

 age.forEach((key, value) {

   print('$key: $value');

 });

 // Output:

 // Alice: 30

 // Bob: 25

 // Charlie: 35

}

9. Concatenate Strings in a List

void main() {

 List<String> words = ['Hello', 'Dart', 'World'];

 String sentence = '';

 words.forEach((word) {

   sentence += '$word ';

 });

 print(sentence.trim()); // Output: Hello Dart World

}

10. Multiply Each Element in a List by 2

void main() {

 List<int> numbers = [1, 2, 3, 4, 5];

 numbers.forEach((number) {

   print(number * 2);

 });

 // Output:

 // 2

 // 4

 // 6

 // 8

 // 10

}

void main() {

 for (int i = 1; i <= 3; i++) {

   for (int j = 1; j <= 2; j++) {

     print("i: $i, j: $j");

   }

 }

}

----------------------------------------------------------------------------------------------------

Here are 10 simple Dart programs that use nested for loops, each showcasing a different pattern or logic.

1. Multiplication Table

void main() {

 for (int i = 1; i <= 10; i++) {

   for (int j = 1; j <= 10; j++) {

     print('$i * $j = ${i * j}');

   }

   print('');

 }

}

2. Right-Angle Triangle of Asterisks

import 'dart:io';

void main() {

 int rows = 5;

 for (int i = 1; i <= rows; i++) {

   for (int j = 1; j <= i; j++) {

     stdout.write('*');

   }

   print('');

 }

}

3. Inverted Right-Angle Triangle

import 'dart:io';

void main() {

 int rows = 5;

 for (int i = rows; i >= 1; i--) {

   for (int j = 1; j <= i; j++) {

     stdout.write('*');

   }

   print('');

 }

}

4. Pyramid Pattern

import 'dart:io';

void main() {

 int rows = 5;

 for (int i = 1; i <= rows; i++) {

   for (int j = 1; j <= rows - i; j++) {

     stdout.write(' ');

   }

   for (int k = 1; k <= (2 * i - 1); k++) {

     stdout.write('*');

   }

   print('');

 }

}

5. Diamond Pattern

import 'dart:io';

void main() {

 int rows = 5;

 for (int i = 1; i <= rows; i++) {

   for (int j = 1; j <= rows - i; j++) {

     stdout.write(' ');

   }

   for (int k = 1; k <= (2 * i - 1); k++) {

     stdout.write('*');

   }

   print('');

 }

 for (int i = rows - 1; i >= 1; i--) {

   for (int j = 1; j <= rows - i; j++) {

     stdout.write(' ');

   }

   for (int k = 1; k <= (2 * i - 1); k++) {

     stdout.write('*');

   }

   print('');

 }

}

6. Number Pyramid

import 'dart:io';

void main() {

 int rows = 5;

 for (int i = 1; i <= rows; i++) {

   for (int j = 1; j <= rows - i; j++) {

     stdout.write(' ');

   }

   for (int k = 1; k <= i; k++) {

     stdout.write('$k ');

   }

   print('');

 }

}

7. Floyd’s Triangle

import 'dart:io';

void main() {

 int rows = 5, count = 1;

 for (int i = 1; i <= rows; i++) {

   for (int j = 1; j <= i; j++) {

     stdout.write('$count ');

     count++;

   }

   print('');

 }

}

8. Hollow Square

import 'dart:io';

void main() {

 int side = 5;

 for (int i = 1; i <= side; i++) {

   for (int j = 1; j <= side; j++) {

     if (i == 1 || i == side || j == 1 || j == side) {

       stdout.write('*');

     } else {

       stdout.write(' ');

     }

   }

   print('');

 }

}

9. Checkerboard Pattern

import 'dart:io';

void main() {

 int rows = 8;

 for (int i = 1; i <= rows; i++) {

   for (int j = 1; j <= rows; j++) {

     if ((i + j) % 2 == 0) {

       stdout.write('* ');

     } else {

       stdout.write('  ');

     }

   }

   print('');

 }

}

10. Hourglass Pattern

void main() {

  int rows = 5;

  for (int i = rows; i >= 1; i--) {

    for (int j = 1; j <= rows - i; j++) {

      stdout.write(' ');

    }

    for (int k = 1; k <= (2 * i - 1); k++) {

      stdout.write('*');

    }

    print('');

  }

  for (int i = 2; i <= rows; i++) {

    for (int j = 1; j <= rows - i; j++) {

      stdout.write(' ');

    }

    for (int k = 1; k <= (2 * i - 1); k++) {

      stdout.write('*');

    }

    print('');

  }

}

void main() {

 int count = 1;

 // Print numbers until count reaches 5

 while (count <= 5) {

   print("Count: $count");

   count++;

 }

}

Ex=

void main()

{

 int i=1, numb=9;

 while(i<=numb)

   {

     print('Hello');

     i=i+1;

   }

}

-----------------------------------------------------------------------------------------------------------

Here are 10 simple Dart programs that utilize while loops to demonstrate various patterns and logic.

1. Print Numbers from 1 to 10

void main()

{

 int i=1;

 while(i<=10)

   {

     print(i);

     i++;

   }

}

2. Sum of First 10 Natural Numbers

void main()

{

 int i=1, sum=0;

 while(i<=10){

   sum+=i;

   i++;

 }

 print('Sum: $sum');

}

3. Multiplication Table for a Given Number

void main()

{

 int i=1, num=5;

 while(i<=10){

   print('$i*$num= ${i*num}');

   i++;

 }

}

4. Factorial of a Number

void main() {

 int number = 5, factorial = 1, i = 1;

 while (i <= number) {

   factorial *= i;

   i++;

 }

 print("Factorial of $number is $factorial");

}

5. Reverse a Given Number

void main() {

 int number = 12345, reversed = 0;

 while (number > 0) {

   int remainder = number % 10;

   reversed = (reversed * 10) + remainder;

   number ~/= 10;

 }

 print("Reversed number is $reversed");

}

6. Fibonacci Series up to N Terms

void main() {

 int n = 10, first = 0, second = 1;

 int count = 1;

 print("Fibonacci series up to $n terms:");

 while (count <= n) {

   print(first);

   int next = first + second;

   first = second;

   second = next;

   count++;

 }

}

7. Print Even Numbers from 1 to 20

void main() {

 int i = 1;

 print("Even numbers from 1 to 20:");

 while (i <= 20) {

   if (i % 2 == 0) {

     print(i);

   }

   i++;

 }

}

8. Count Digits in a Given Number

void main() {

 int number = 123456, count = 0;

 while (number > 0) {

   count++;

   number ~/= 10;

 }

 print("Number of digits: $count");

}

9. Sum of Digits of a Given Number

void main() {

 int number = 12345, sum = 0;

 while (number > 0) {

   int remainder = number % 10;

   sum += remainder;

   number ~/= 10;

 }

 print("Sum of digits: $sum");

}

10. Print Numbers in Reverse from 10 to 1

void main() {

 int i = 10;

 print("Numbers in reverse from 10 to 1:");

 while (i >= 1) {

   print(i);

   i--;

 }

}

void main()

{

 int a=0;

 do

 {

   print(a);

   a++;

 }while(a<=6);

}

Ex=

void main() {

 int i = 0;

 do{

   print("Welcome ji no ${i}");

   i++;

 }while(i < 7);

}

Ex=

void main() {

 int number = 1;

 // Print numbers until number exceeds 3

 do {

   print("Number: $number");

   number++;

 } while (number <= 3);

}

Ex=

void main() {

 int a = 0,

     b = 0;

 while (b <= 4) {

   print(b);

   b++;

 }

 do {

   print(a);

   a++;

 } while (a <= 6);

}

----------------------------------------------------------------------------------------------------------------------------------------

1. Print Numbers from 1 to 10

void main()

{

 int i=1;

 do{

   print(i);

   i++;

 }

 while(i<=10);

}

2. Sum of First 10 Natural Numbers

void main()

{

 int i=1, sum=0;

 do{

   sum+=1;

   i++;

 }while(i<=10);

 print('Sum of first natural no: $sum');

}

3. Multiplication Table for a Given Number

void main() {

 int number = 5, i = 1;

 do {

   print('$number * $i = ${number * i}');

   i++;

 } while (i <= 10);

}

4. Factorial of a Number

void main() {

 int number = 5, factorial = 1, i = 1;

 do {

   factorial *= i;

   i++;

 } while (i <= number);

 print("Factorial of $number is $factorial");

}

5. Reverse a Given Number

void main() {

 int number = 12345, reversed = 0;

 do {

   int remainder = number % 10;

   reversed = (reversed * 10) + remainder;

   number ~/= 10;

 } while (number > 0);

 print("Reversed number is $reversed");

}

6. Fibonacci Series up to N Terms

void main() {

 int n = 10, first = 0, second = 1, count = 1;

 print("Fibonacci series up to $n terms:");

 do {

   print(first);

   int next = first + second;

   first = second;

   second = next;

   count++;

 } while (count <= n);

}

7. Print Even Numbers from 1 to 20

void main() {

 int i = 1;

 print("Even numbers from 1 to 20:");

 do {

   if (i % 2 == 0) {

     print(i);

   }

   i++;

 } while (i <= 20);

}

8. Count Digits in a Given Number

void main() {

 int number = 123456, count = 0;

 do {

   count++;

   number ~/= 10;

 } while (number > 0);

 print("Number of digits: $count");

}

9. Sum of Digits of a Given Number

void main() {

 int number = 12345, sum = 0;

 do {

   int remainder = number % 10;

   sum += remainder;

   number ~/= 10;

 } while (number > 0);

 print("Sum of digits: $sum");

}

10. Print Numbers in Reverse from 10 to 1

void main() {

 int i = 10;

 print("Numbers in reverse from 10 to 1:");

 do {

   print(i);

   i--;

 } while (i >= 1);

}

These programs demonstrate how to use the do-while loop in Dart for a variety of operations, from printing patterns to manipulating numbers. The do-while loop ensures the code executes at least once, regardless of the initial condition.

void main()

{

  for(int i = 1 ;i<10 ;i++)

 {

      print(i);

      if(i == 5)

        {

          break;

        }

    }

   }

--------------------------------------------------------------------------------------------------------------------------

Here are 10 Dart programs that demonstrate the use of `break` to quit a loop under certain conditions.

### 1. Stop Looping When Number is Found

```dart

void main() {

 for (int i = 1; i <= 10; i++) {

   if (i == 5) {

     print("Found 5, breaking loop.");

     break;

   }

   print(i);

 }

}

```

### 2. Sum Numbers Until Sum Exceeds 15

```dart

void main() {

 int i = 1, sum = 0;

 while (true) {

   sum += i;

   if (sum > 15) {

     print("Sum exceeded 15, breaking loop.");

     break;

   }

   i++;

 }

 print("Final Sum: $sum");

}

### 3. Break Out of an Infinite Loop

```dart

void main() {

 int i = 0;

 while (true) {

   print("Loop iteration: $i");

   if (i == 5) {

     print("Breaking out of infinite loop.");

     break;

   }

   i++;

 }

}

### 4. Print Only Odd Numbers, Stop at 9

```dart

void main() {

 for (int i = 1; i < 20; i += 2) {

   if (i > 9) {

     break;

   }

   print(i);

 }

}

```

### 5. Find and Break on First Divisible by 7

```dart

void main() {

 for (int i = 1; i <= 20; i++) {

   if (i % 7 == 0) {

     print("First number divisible by 7 is $i, breaking loop.");

     break;

   }

 }

}

```

### 6. Skip Even Numbers and Stop After 5 Odd Numbers

```dart

void main() {

 int oddCount = 0;

 for (int i = 1; ; i++) {

   if (i % 2 == 0) continue;

   print(i);

   oddCount++;

   if (oddCount == 5) {

     print("Printed 5 odd numbers, breaking loop.");

     break;

   }

 }

}

```

### 7. Nested Loop - Break Inner Loop

```dart

void main() {

 for (int i = 1; i <= 3; i++) {

   for (int j = 1; j <= 5; j++) {

     if (j == 4) {

       print("Breaking inner loop when j is $j.");

       break;

     }

     print("i = $i, j = $j");

   }

 }

}

```

### 8. Stop After Finding First Prime Number in Range

```dart

void main() {

 for (int i = 10; i <= 50; i++) {

   bool isPrime = true;

   for (int j = 2; j <= i ~/ 2; j++) {

     if (i % j == 0) {

       isPrime = false;

       break;

     }

   }

   if (isPrime) {

     print("First prime number in range: $i");

     break;

   }

 }

}

```

### 9. Break When Cumulative Product Exceeds 100

```dart

void main() {

 int product = 1, i = 1;

 while (true) {

   product *= i;

   if (product > 100) {

     print("Product exceeded 100, breaking loop.");

     break;

   }

   i++;

 }

 print("Final Product: $product");

}

```

### 10. Break Out of a String Character Search

```dart

void main() {

 String text = "Hello, Dart!";

 for (int i = 0; i < text.length; i++) {

   if (text[i] == ',') {

     print("Found comma at position $i, breaking loop.");

     break;

   }

   print(text[i]);

 }

}

```

Each example demonstrates a different way to use `break` in a loop to control program flow based on conditions, including stopping loops early, skipping certain iterations, and handling nested loops.

-------------------------------------------------------------------------------------------------

Here are 10 simple Dart programs that utilize `break` statements within different types of loops to demonstrate various control flow scenarios.

### 1. Find the First Multiple of 7 Between 1 and 100

```dart

void main() {

  for (int i = 1; i <= 100; i++) {

    if (i % 7 == 0) {

      print("First multiple of 7 between 1 and 100 is: $i");

      break;

    }

  }

}

```

### 2. Exit Loop When Sum Exceeds 50

```dart

void main() {

  int sum = 0, i = 1;

  while (true) {

    sum += i;

    if (sum > 50) {

      print("Sum exceeded 50, current sum: $sum");

      break;

    }

    i++;

  }

}

```

### 3. Break Out of Nested Loop Upon Condition

```dart

void main() {

  for (int i = 1; i <= 5; i++) {

    for (int j = 1; j <= 5; j++) {

      if (j == 3) {

        print("Breaking inner loop at i=$i, j=$j");

        break;

      }

      print("i=$i, j=$j");

    }

  }

}

```

### 4. Find Prime Number Less Than 50 and Exit

```dart

void main() {

  int num = 2;

  while (num < 50) {

    bool isPrime = true;

    for (int i = 2; i <= num ~/ 2; i++) {

      if (num % i == 0) {

        isPrime = false;

        break;

      }

    }

    if (isPrime) {

      print("First prime number less than 50 is: $num");

      break;

    }

    num++;

  }

}

```

### 5. Break Out When Number is Negative in User-Entered List

```dart

void main() {

  List<int> numbers = [10, 20, -5, 15, 30];

  for (int number in numbers) {

    if (number < 0) {

      print("Encountered a negative number: $number, stopping.");

      break;

    }

    print("Number: $number");

  }

}

```

### 6. Find and Print the First Even Number in a List

```dart

void main() {

  List<int> numbers = [1, 3, 7, 10, 15];

  for (int number in numbers) {

    if (number % 2 == 0) {

      print("First even number in the list is: $number");

      break;

    }

  }

}

```

### 7. Break When a Specific Condition is Met in a Series of Calculations

```dart

void main() {

  for (int i = 1; i <= 10; i++) {

    int square = i * i;

    print("Square of $i is $square");

    if (square > 30) {

      print("Square exceeded 30, stopping loop.");

      break;

    }

  }

}

```

### 8. Stop Loop When Random Number Exceeds a Threshold

```dart

import 'dart:math';

void main() {

  Random random = Random();

  while (true) {

    int number = random.nextInt(100);

    print("Generated number: $number");

    if (number > 80) {

      print("Number exceeded 80, stopping.");

      break;

    }

  }

}

```

### 9. Loop Through Characters in a String and Stop at Specific Character

```dart

void main() {

  String text = "Hello, World!";

  for (int i = 0; i < text.length; i++) {

    if (text[i] == ',') {

      print("Encountered comma, stopping.");

      break;

    }

    print("Character: ${text[i]}");

  }

}

```

### 10. Sum Numbers from 1 to N, Stop When Sum Exceeds 100

```dart

void main() {

  int sum = 0, i = 1;

  while (i <= 20) {

    sum += i;

    if (sum > 100) {

      print("Sum exceeded 100 at i=$i, current sum: $sum");

      break;

    }

    i++;

  }

}

```

These programs illustrate how `break` can be used to exit from loops immediately when specific conditions are met, enabling control over the loop flow for scenarios like terminating early, handling unexpected data, or stopping based on calculations.

void main() {

 for (int i = 1; i <= 5; i++) {

   if (i == 3) {

     continue;  // Skip this iteration when i is 3

   }

   print("Number: $i");

 }

}

------------------------------------------------------------------------------------------------------------------------------

Here are 10 simple Dart programs that utilize the continue statement within different types of loops to skip the current iteration based on specified conditions.

1. Skip Odd Numbers from 1 to 10

void main()

{

 for(int i=1; i<=10; i++){

   if(i%2!=0){

     continue;

   }

   print(i);

 }

}

2. Print Numbers from 1 to 10, Skip Multiples of 3

void main() {

 for (int i = 1; i <= 10; i++) {

   if (i % 3 == 0) {

     continue;

   }

   print(i);

 }

}

3. Skip Specific Character in a String

void main() {

 String text = "Dart Programming";

 for (int i = 0; i < text.length; i++) {

   if (text[i] == 'a') {

     continue;

   }

   print(text[i]);

 }

}

4. Skip Negative Numbers in a List

void main() {

 List<int> numbers = [10, -5, 20, -15, 30];

 for (int number in numbers) {

   if (number < 0) {

     continue;

   }

   print("Positive number: $number");

 }

}

5. Skip Prime Numbers from 1 to 10

void main() {

 for (int i = 2; i <= 10; i++) {

   bool isPrime = true;

   for (int j = 2; j <= i ~/ 2; j++) {

     if (i % j == 0) {

       isPrime = false;

       break;

     }

   }

   if (isPrime) {

     continue;

   }

   print("Non-prime number: $i");

 }

}

6. Skip Vowels in a String

void main() {

 String text = "Dart Language";

 for (int i = 0; i < text.length; i++) {

   if ("aeiouAEIOU".contains(text[i])) {

     continue;

   }

   print(text[i]);

 }

}

7. Print Multiples of 5, Skip Multiples of 10 Between 1 to 50

void main() {

 for (int i = 1; i <= 50; i++) {

   if (i % 5 == 0) {

     if (i % 10 == 0) {

       continue;

     }

     print("Multiple of 5 but not 10: $i");

   }

 }

}

8. Print Square of Numbers 1 to 10, Skip if Square is More Than 50

void main() {

 for (int i = 1; i <= 10; i++) {

   int square = i * i;

   if (square > 50) {

     continue;

   }

   print("Square of $i: $square");

 }

}

9. Sum Numbers from 1 to 20, Skip Even Numbers

void main() {

 int sum = 0;

 for (int i = 1; i <= 20; i++) {

   if (i % 2 == 0) {

     continue;

   }

   sum += i;

 }

 print("Sum of odd numbers from 1 to 20: $sum");

}

10. Skip Numbers Divisible by 4 in Nested Loop

void main() {

 for (int i = 1; i <= 3; i++) {

   for (int j = 1; j <= 5; j++) {

     if (j % 4 == 0) {

       continue;

     }

     print("i=$i, j=$j");

   }

 }

}

These examples illustrate how continue can be used in Dart to skip over certain iterations within a loop, allowing specific cases to be ignored while the loop continues its execution.