https://github.com/cwiki-us/codebank-algorithm/blob/master/src/test/java/com/ossez/codebank/interview/tests/others/MinimumCoinsTest.java
First of all we mark that for state 0 (sum 0) we have found a solution with a minimum number of 0 coins. We then go to sum 1. First, we mark that we haven't yet found a solution for this one (a value of Infinity would be fine). Then we see that only coin 1 is less than...
package leetcode // 解法一 最快的解是 DP + 单调栈 func sumSubarrayMins(A []int) int { stack, dp, res, mod := []int{}, make([]int, len(A)+1), 0, 1000000007 stack = append(stack, -1) for i := 0; i < len(A); i++ { for stack[len(stack)-1] != -1 && A[i]...
All points are distinct. Answers within10^-5of the actual value will be accepted as correct. 解题思路:本题是【leetcode】939. Minimum Area Rectangle的升级版,由于题目要求矩形不需要和X轴或者Y轴平行,因此我的解法就是简单粗暴。从points中任意取出四个点判断是否是矩形,这样的话时间复杂度是O(n^4),...
题目: Given a binary tree, find its minimum depth. The minimum depth is the number of nodes along the shortest path from the root node down to the nearest leaf node. Note: A leaf is a node with no ... 查看原文 [LeetCode]111.Minimum Depth of Binary Tree ...
Given a non-empty integer array of sizen, find the minimum number of moves required to make all array elements equal, where a move is incrementingn- 1 elements by 1. Example: Input: [1,2,3] Output: 3 Explanation: Only three moves are needed (remember each move increments two elements...
921. Minimum Add to Make Parentheses Valid # 题目 # Given a string S of ‘(’ and ‘)’ parentheses, we add the minimum number of parentheses ( ‘(’ or ‘)’, and in any positions ) so that the resulting parentheses string is valid. Formally, a parent
解题思路:本题是【leetcode】939. Minimum Area Rectangle的升级版,由于题目要求矩形不需要和X轴或者Y轴平行,因此我的解法就是简单粗暴。从points中任意取出四个点判断是否是矩形,这样的话时间复杂度是O(n^4),虽然points.length最大只有50,但还是华丽丽的超时。 那就优化吧,我们可以以边为单位,假设两条边要组成...