LintCode题解之比较字符串

public class Solution {
    
    /*
     * @param A: A string
     * @param B: A string
     * @return: if string A contains all of the characters in B return true else return false
     */
    public boolean compareStrings(String A, String B) {
        
        if(A.length()<B.length()) return false;
        
        int[] book = new int[26];
        for(int i=0; i<B.length(); i++){
            book[B.charAt(i)-‘A‘]++;
        }
        for(int i=0; i<A.length(); i++){
            book[A.charAt(i)-‘A‘]--;
        }
        for(int i=0; i<book.length; i++){
            if(book[i]>0) return false;
        }
        return true;
    }
    
}