Compare two strings A and B, determine whether A contains all of the characters in B.
The characters in string A and B are all Upper Case letters.
Example
For A = "ABCD", B = "ABC", return true.
For A = "ABCD", B = "AABC", return false.
public class Solution { /** * @param A : A string includes Upper Case letters * @param B : A string includes Upper Case letter * @return : if string A contains all of the characters in B return true else return false */ public boolean compareStrings(String A, String B) { int[] AA = new int[26]; int[] BB = new int[26]; for (int i=0; i<A.length(); i++) { AA[A.charAt(i) - 'A']++; } for (int i=0; i<B.length(); i++) { BB[B.charAt(i) - 'A']++; if (BB[B.charAt(i) - 'A'] > AA[B.charAt(i) - 'A']) return false; } return true; } }