LintCode-Compare Strings

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.

Solution:

 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[] record = new int[256];
         Arrays.fill(record,0);
         for (int i=0;i<A.length();i++){
             int ind = (int) A.charAt(i);
             record[ind]++;
         }

         for (int i=0;i<B.length();i++){
             int ind = (int) B.charAt(i);
             if (record[ind]==0) return false;
             else record[ind]--;
         }

         return true;
     }
 }