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:

 

 1 public class Solution {
 2     /**
 3      * @param A : A string includes Upper Case letters
 4      * @param B : A string includes Upper Case letter
 5      * @return :  if string A contains all of the characters in B return true else return false
 6      */
 7     public boolean compareStrings(String A, String B) {
 8         int[] record = new int[256];
 9         Arrays.fill(record,0);
10         for (int i=0;i<A.length();i++){
11             int ind = (int) A.charAt(i);
12             record[ind]++;
13         }
14 
15         for (int i=0;i<B.length();i++){
16             int ind = (int) B.charAt(i);
17             if (record[ind]==0) return false;
18             else record[ind]--;
19         }
20 
21         return true;
22     }
23 }

 

 

 

posted @ 2014-12-31 07:30  LiBlog  阅读(502)  评论(0)  编辑  收藏  举报