293 Flip Game
Posted apanda009
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了293 Flip Game相关的知识,希望对你有一定的参考价值。
You are playing the following Flip Game with your friend:
Given a string that contains only these two characters: + and -,
you and your friend take turns to flip two consecutive "++" into "--".
The game ends when a person can no longer make a move and therefore the other person will be the winner. Write a function to compute all possible states of the string after one valid move. For example, given s = "++++", after one move, it may become one of the following states: [ "--++", "+--+", "++--" ] If there is no valid move, return an empty list [].
public class Solution { public List<String> generatePossibleNextMoves(String s) { List<String> res = new ArrayList<String>(); if (s==null || s.length()<=1) return res; for (int i=0; i<s.length()-1; i++) { if (s.charAt(i)==‘+‘ &&s.charAt(i+1)==‘+‘) res.add(process(s, i)); } return res; } public String process(String s, int i) { StringBuffer result = new StringBuffer(); result.append(s.substring(0, i)); result.append("--"); result.append(s.substring(i+2)); return result.toString(); } }
以上是关于293 Flip Game的主要内容,如果未能解决你的问题,请参考以下文章