[LeetCode] 278. First Bad Version_Easy tag: Binary Searchfirst index, without duplicates [LeetCode] 162. Find Peak Element(852. Peak Index in a Mountain Array)_Medium tag: Binary Search [LeetCode] 74. Search a 2D Matrix_Medium tag: Binary Search [LeetCode] 240. Search a 2D Matrix II...
Can you solve this real interview question? Binary Search - Given an array of integers nums which is sorted in ascending order, and an integer target, write a function to search target in nums. If target exists, then return its index. Otherwise, return -
The right subtree of a node contains only nodes with keys greater than the node's key. Both the left and right subtrees must also be binary search trees. Example 1: 2 /\1 3 Binary tree[2,1,3], return true. Example 2: 1 /\2 3 Binary tree[1,2,3], return false. 2、边界条件...
Input:root = [4,2,7,1,3], val = 2Output:[2,1,3] Example 2: Input:root = [4,2,7,1,3], val = 5Output:[] Constraints: The number of nodes in the tree is in the range[1, 5000]. 1 <= Node.val <= 107 rootis a binary search tree. ...
11. Pattern: Modified Binary Search,改造过的二分 当你需要解决的问题的输入是排好序的数组,链表,或是排好序的矩阵,要求咱们寻找某些特定元素。这个时候的不二选择就是二分搜索。这种模式是一种超级牛的用二分来解决问题的方式。 对于一组满足上升排列的数集来说,这种模式的步骤是这样的: 首先,算出左右端点的...
Grokking the Coding Interview: Patterns for Coding Questionswww.educative.iowww.educative.io/courses/grokking-the-coding-interview?aff=xy7W 课程是一个算法总结提高的课程,它把算法面试中可能遇到的题分成了各种模式,每类题各个击破。 如果想买订阅(Subscriptions)的小伙伴,则可以用ZHIHUEDU-10(必须一...
Vimeo | Software engineer III (backend heavy questions DSA) Question 1: https://leetcode.com/problems/maximum-subarray/description/ Brute force and optimized solution asked Question 2: https://leetcode.com/problems/3sum/description/ Brute force and optimized solution asked **Preparation Link: ** ...
Find the Duplicate Number * 题意:n+1个数属于[1~n],找出重复的那个数 * 难度:Medium * 分类:Array, Two Pointers, Binary Search * 思路:如果nums[i]不在对应位置,则和对应位置交换。如果对应位置上也为该数,说明这个数就是重复的数字。这个方法改变了数组。是错误的。 * 另一种方法,把问题转换成有...
2140.Solving-Questions-With-Brainpower (H) 2189.Number-of-Ways-to-Build-House-of-Cards (H-) 2218.Maximum-Value-of-K-Coins-From-Piles (H-) 2222.Number-of-Ways-to-Select-Buildings (M+) 2312.Selling-Pieces-of-Wood (M+) 2338.Count-the-Number-of-Ideal-Arrays (H) 2431.Maximize-Total-...
Binary Search #33 Search in Rotated Sorted Arrayhttps://leetcode.com/problems/search-in-rotated-sorted-array Video: English:https://youtu.be/tMk0r_0oDcE Chinese:https://youtu.be/MzoL02wd5ag #278 First Bad Version https://leetcode.com/problems/first-bad-version ...