Embedded Files
Programming
/*1*/public class MyClass {
public static void main(String []args) {
System.out.println("Hello World");
}
}
/*2*/import java.util.Scanner;
public class MyClass {
public static void main(String []args){
Scanner in = new Scanner(System.in);
double feet, meters;
System.out.print("Enter feet>");
feet = in.nextDouble();
meters = feet * 0.3048; //official conversion no
System.out.println(feet+"ft = "+meters+"m");
}
}
/*3*/public class MyClass {
public static void main(String []args){
System.out.printf("%d %f %b %s\n", 34, 67.9, true, "hello");
}
}
/*4*/public class MyClass {
public static void main(String []args){
double a = 1.0, b = 8.0, c = 12.0;
double b2a = -b/(2.0*a); //I forgot ( )
double bb4ac = b*b-4.0*a*c;
double sqr;
if (bb4ac < 0) {
bb4ac = -bb4ac;
sqr = Math.sqrt(bb4ac)/(2.0*a);
System.out.printf("%f + %fi\t%f - %fi",
b2a, sqr, b2a, sqr);
} else {
sqr = Math.sqrt(bb4ac)/(2.0*a);
System.out.printf("%f\t%f\n", b2a+sqr, b2a-sqr);
}
}
}
/*5*/import java.util.Scanner;
public class MyClass {
public static void main(String []args){
Scanner in = new Scanner(System.in);
double a, b, c;
System.out.print("Enter a b c values>");
a = in.nextDouble();
b = in.nextDouble();
c = in.nextDouble();
double b2a = -b/(2.0*a); //I forgot ( )
double bb4ac = b*b-4.0*a*c;
double sqr;
if (bb4ac < 0) {
bb4ac = -bb4ac;
sqr = Math.sqrt(bb4ac)/(2.0*a);
System.out.printf("%f + %fi\t%f - %fi",
b2a, sqr, b2a, sqr);
} else {
sqr = Math.sqrt(bb4ac)/(2.0*a);
System.out.printf("%f\t%f\n", b2a+sqr, b2a-sqr);
}
}
}
/*6*/import java.util.Scanner;
public class MyClass {
public static void main(String []args){
Scanner in = new Scanner(System.in);
int i, sum=0; //found must key enter or blank after value
while(in.hasNext()) {
i = in.nextInt();
if ( i == 9999) break;
System.out.println(i);
sum += i;
}
System.out.println("The sum is "+sum);
}
}
/*7*/import java.util.Scanner;
public class MyClass {
public static void main(String []args){
Scanner in = new Scanner(System.in);
int i, sum=0; //found must key enter or blank after value
while(in.hasNext()) {
i = in.nextInt();
if (i%2 == 0) continue;
if ( i == 9999) break;
System.out.println(i);
sum += i;
}
System.out.println("The sum is "+sum);
}
}
/*8*/import java.util.Scanner;
public class MyClass {
public static void main(String []args){
Scanner in = new Scanner(System.in);
int i, sum=0; //must key enter after value
while(in.hasNext()) {
i = in.nextInt();
switch (i) {
case 4:
case 5:
case 11:
case 13:
case 17: continue;
}
if ( i == 9999) break;
System.out.println(i);
sum += i;
}
System.out.println("The sum is "+sum);
}
}
/*9*/import java.util.Scanner;
public class MyClass {
public static void main(String []args){
Scanner in = new Scanner(System.in);
System.out.print("Enter an integer>");
int i = in.nextInt();
for (int j=1; j<= i; j++) {
for (int k=j; k>0; k--) {
System.out.print("[]");
}
System.out.println();
}
}
}
/*10*/import java.util.Scanner;
import java.math.BigInteger;
public class MyClass {
public static void main(String []args){
Scanner in = new Scanner(System.in);
System.out.print("Enter two Big integers>");
BigInteger a, b;
a = in.nextBigInteger();
b = in.nextBigInteger();
System.out.println(a.multiply(b));
}
}
/*11*/import java.util.Scanner;
public class MyClass {
public static void main(String []args){
Scanner in = new Scanner(System.in);
System.out.print("Enter two Booleans>");
boolean a, b;
a = in.nextBoolean();
b = in.nextBoolean();
System.out.printf("%b %b %b\n", a, b, (a | b) ^ !(a & b));
}
}
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