Github 同步地址: https://github.com/grandyang/leetcode/issues/70 类似题目: Min Cost Climbing Stairs Fibonacci Number N-th Tribonacci Number Minimum Rounds to Complete All Tasks Count Number of Ways to Place Houses Nu
3. 下面两种方法参考http://blog.csdn.net/kenden23/article/details/17377869在动态规划的基础上节省空间。 1classSolution {2public:3intclimbStairs(intn) {4intsteps[3];5steps[0] =1; steps[1] =1;67for(inti =2; i < n +1; i++) {8steps[i %3] = steps[(i -1) %3] + steps[(i...
Can you solve this real interview question? Find the Duplicate Number - Given an array of integers nums containing n + 1 integers where each integer is in the range [1, n] inclusive. There is only one repeated number in nums, return this repeated number
class NQueens: """Generate all valid solutions for the n queens puzzle""" def __init__(self, size): # Store the puzzle (problem) size and the number of valid solutions self.size = size self.solutions = 0 self.solve() def solve(self): """Solve the n queens puzzle and print the...
Leetcode 253 Meeting Room II（Meeting Room I也可以使用）Leetcode 218 The Skyline ProblemLeetcode...
Note: All explanations are written in Github Issues, please do not create any new issue or pull request in this project since the problem index should be consistent with the issue index, thanks! ('$' means the problem is locked on Leetcode, '*' means the problem is related to Database...
leetcode 17:letter-combinations-of-a-phone-number 递归方法解决 动态规划 leetcode 70: climbing-stairs: 解题思路爬第n个楼梯的方法是爬第n-1和第n-2的方法和,因为一次或者爬一格,或者爬2格 leetcode 64: 维护一个二维的 dp 数组,其中 dp[i][j] 表示到达当前位置的最小路径和。接下来找状态转移方程,...
LeetCode 刷题随手记 - 第一部分 前 256 题(非会员),仅算法题,的吐槽 https://leetcode.com/problemset/algorithms/...
Follow up for N-Queens problem. Now, instead outputting board configurations, return the total number of distinct solutions. Input: 5 Output: 10 Solution: N Queens 的follow up, 用一个全局的计数器计算组合就行 Code: # code blockclassSolution{publicinttotalNQueens(intn){if(n<=0){return0;}...
Problem Statement Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or minus sign -, non-negative integers and empty spaces . The expression string contains only non-negative integers, +, -, *,...