leetcode/lcci/01.02.Check Permutation/Solution2.java

class Solution {
    public boolean CheckPermutation(String s1, String s2) {
        char[] cs1 = s1.toCharArray();
        char[] cs2 = s2.toCharArray();
        Arrays.sort(cs1);
        Arrays.sort(cs2);
        return Arrays.equals(cs1, cs2);
    }
}