Jump Game 是一道有意思的题目.题意很简单,给你一个数组,数组的每个元素表示你能前进的最大步数,最开始时你在第一个元素所在的位置,之后你可以前进,问能不能到达最后一个元素位置. 比如: A = [2, 3, 1, 1, 4], return true. 一种走法是 0 - 2 - 3 - 4,还有一种走法是 0 - 1 - 4 O(n ^ 2) 解法 一个很显然,几乎不用动脑的解法. 设置一个布尔数组f,f[0] === true 表示 index === 0 这个位置能够到达,模拟每个…

第一种方法是利用DP.时间复杂度是 O(m * m * n) dp(i,j):矩阵中同一行以(i,j)结尾的所有为1的最长子串长度 代码例如以下: int maximalRectangle(vector<vector<char> > &matrix) { int m = matrix.size(); if (m == 0) return 0; int n = matrix[0].size(); if (n == 0) return 0; vector<vector&l…

Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Determine if you are able to reach the last index. Example 1: Input…

55. Jump Game 第一种方法: 只要找到一个方式可以到达,那当前位置就是可以到达的,所以可以break class Solution { public: bool canJump(vector<int>& nums) { int length = nums.size(); ) return false; vector<bool> dp(length,false); dp[] = true; ;i < length;i++){ ;j >= ;j--){…

文章版权由作者李晓晖和博客园共有,若转载请于明显处标明出处:http://www.cnblogs.com/naaoveGIS/ 1.背景 基于百度地图进行数据展示是目前项目中常见场景,但是因为百度地图是基于BD09坐标系的,GPS坐标(WGS84)或者其他常见的标准坐标是无法准确在地图上进行展示的,但是互联网在线情况下,百度提供了将WGS84经纬度转换成百度经纬度坐标的API,这里不再对其进行研究(离线情况下也有专门方法解决).这里,我们探讨,如何将在百度上获取的百度坐标数据反转成WGS84坐标…

Java中实现十进制数转换为二进制 第一种:除基倒取余法 这是最符合我们平时的数学逻辑思维的,即输入一个十进制数n,每次用n除以2,把余数记下来,再用商去除以2...依次循环,直到商为0结束,把余数倒着依次排列,就构成了转换后的二进制数.那么,在实际实现中,可以用int的一个数来存储最后的二进制,每次求余后把余数存储在int型数的低位,依次递增. 1 public void binaryToDecimal(int n){ 2 int t = 0; //用来记录位数 3 int bin = 0;…

55. Jump Game Description Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Determine if you are able to reach the la…

Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Determine if you are able to reach the last index. Example 1: Input…

Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Determine if you are able to reach the last index. For example:A = …

Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Determine if you are able to reach the last index. For example:A = …