[leetcode] 292. Nim Game 解题报告

You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take the first turn to remove the stones.

Both of you are very clever and have optimal strategies for the game. Write a function to determine whether you can win the game given the number of stones in the heap.

For example, if there are 4 stones in the heap, then you will never win the game: no matter 1, 2, or 3 stones you remove, the last stone will always be removed by your friend.

只要我第一次拿走后剩余的石头数是4的倍数即可

一刷：

    public boolean canWinNim(int n) {
        return n%4 == 0 ? false:true;
    }
时间： 2024-08-06 07:55:02

[leetcode] 292. Nim Game 解题报告的相关文章

LeetCode: Pascal's Triangle 解题报告

Pascal's Triangle Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5,Return [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ] SOLUTION 1:很easy的题.注意记得把List加到ret中.比较简单,每一行的每一个元素有这个规律:1. 左右2边的是1.i, j 表示行,列坐标.2.

[LeetCode]Longest Valid Parentheses, 解题报告

题目 Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring. For "(()", the longest valid parentheses substring is "()", which has length = 2. Another example i

【LeetCode】Insert Interval 解题报告

[题目] Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary). You may assume that the intervals were initially sorted according to their start times. Example 1: Given intervals [1,3],[6,9], insert and m

算法 - leetcode 292 Nim Game

算法 - leetcode 292 Nim Game  一丶题目 你和你的朋友,两个人一起玩 Nim 游戏:桌子上有一堆石头,每次你们轮流拿掉 1 - 3 块石头. 拿掉最后一块石头的人就是获胜者.你作为先手. 你们是聪明人,每一步都是最优解. 编写一个函数,来判断你是否可以在给定石头数量的情况下赢得游戏. 输入: 4 输出: false 解释: 如果堆中有 4 块石头,那么你永远不会赢得比赛: 因为无论你拿走 1 块.2 块 还是 3 块石头,最后一块石头总是会被你的朋友拿走. 二丶思路 1)

LeetCode: Unique Paths II 解题报告

Unique Paths II Total Accepted: 31019 Total Submissions: 110866My Submissions Question Solution Follow up for "Unique Paths": Now consider if some obstacles are added to the grids. How many unique paths would there be? An obstacle and empty spac

【LeetCode】Symmetric Tree 解题报告

Symmetric Tree 解题报告 [LeetCode] https://leetcode.com/problems/symmetric-tree/ Total Accepted: 106639 Total Submissions: 313969 Difficulty: Easy Question Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For

【LeetCode】Next Permutation 解题报告

[题目] Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers. If such arrangement is not possible, it must rearrange it as the lowest possible order (ie, sorted in ascending order). The repl

【LeetCode】Subsets II 解题报告

[题目] Given a collection of integers that might contain duplicates, S, return all possible subsets. Note: Elements in a subset must be in non-descending order. The solution set must not contain duplicate subsets. For example, If S = [1,2,2], a solutio

【LeetCode】3Sum Closest 解题报告

[题目] Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would have exactly one solution. For example, given array S = {