二分查找法作为一种常见的查找方法,将原本是线性时间提升到了对数时间范围,大大缩短了搜索时间,具有很大的应用场景,而在LeetCode中,要运用二分搜索法来解的题目也有很多,但是实际上二分查找法的查找目标有很多种,而且在细节写法也有一些变化.之前有网友留言希望博主能针对二分查找法的具体写法做个总结,博主由于之前一直很忙,一直拖着没写,为了树立博主言出必行的正面形象,不能再无限制的拖下去了,那么今天就来做个了断吧,总结写起来~ (以下内容均为博主自己的总结,并不权威,权当参考,欢迎各位大神们留言讨论…

Given a sorted (in ascending order) integer array nums of n elements and a target value, write a function to search target in nums. If target exists, then return its index, otherwise return -1. Example 1: Input: nums = [-1,0,3,5,9,12], target = 9 Out…

话说博主在写Max Chunks To Make Sorted II这篇帖子的解法四时,写到使用单调栈Monotone Stack的解法时,突然脑中触电一般,想起了之前曾经在此贴LeetCode All in One 题目讲解汇总(持续更新中...)的留言区中说要写单调栈的总结帖,当时答应了要写,就去LeetCode上看标记为Stack的题,可是发现有好多题,而且很多用的不是单调栈,于是博主一个一个的看了起来,但是无奈太多了,一直没有时间全部看完,就一直没有动笔写.虽说时间就像那啥,挤挤总会有的…

LeetCode Binary Search All In One Binary Search 二分查找算法 https://leetcode-cn.com/problems/binary-search/ https://leetcode-cn.com/problems/binary-search/solution/er-fen-cha-zhao-by-leetcode/ 复杂度分析 时间复杂度:\mathcal{O}(\log N)O(logN). 空间复杂度:\mathcal{O}(1)O(…

LeetCode & Binary Search 解题模版 In computer science, binary search, also known as half-interval search, logarithmic search, or binary chop, is a search algorithm that finds the position of a target value within a sorted array. 在计算机科学中,二分搜索(也称为半间隔搜索,对数搜…

https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/description/ leetcode 的题目,binary search 的变形.去在rotated array里找最小值. Idea:分析binary search 三种cases: 1. nums[mid] > nums[r]: remove the left part: l = mid+1          e.g. 2 3 4 5 1 2 2. nu…

Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Calling next() will return the next smallest number in the BST. Note: next() and hasNext() should run in average O(1) time and uses…

原题链接在这里:https://leetcode.com/problems/binary-search-tree-iterator/ Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Calling next() will return the next smallest number in the BST. N…

Winter is coming! Your first job during the contest is to design a standard heater with fixed warm radius to warm all the houses. Now, you are given positions of houses and heaters on a horizontal line, find out minimum radius of heaters so that all…

Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted in ascending from left to right. Integers in each column are sorted in ascending from top to bottom.…