程序员面试金典

[TOC]

1.确定字符串互异

import java.util.*;

public class Different {
    public boolean checkDifferent(String iniString) {
        Set<Character> mySet = new HashSet<>();
        for (int i = 0; i < iniString.length(); i++) {
            mySet.add(iniString.charAt(i));
        }
        return mySet.size() == iniString.length();
    }
}

2.原串反转

[3.确定两串乱序同构]