Can you solve this real interview question? Number of Good Pairs - Given an array of integers nums, return the number of good pairs. A pair (i, j) is called good if nums[i] == nums[j] and i < j. Example 1: Input: nums = [1,2,3,1,1,3] Output: 4 Exp
LeetCode - Number of Good Pairs Given an array of integers nums. A pair (i,j) is called goodifnums[i] == nums[j] and i <j. Return the number of good pairs. Example1: Input: nums= [1,2,3,1,1,3] Output:4Explanation: There are4 good pairs (0,3), (0,4), (3,4), (...
Given an array of integers nums, return the number of good pairs. A pair (i, j) is called good if nums[i] == nums[j] and i < j. Example 1: Input: nums = [1,2,3,1,1,3] Output: 4 Explanation: There are 4 good pairs (0,3), (0,4), (3,4), (2,5) 0-indexed. E...
Runtime:1 ms, faster than81.21%of Java online submissions for Number of Good Pairs. Memory Usage:39.7 MB, less than14.56%of Java online submissions for Number of Good Pairs. 整体表现不太好。只能说一般。
1512. Number of Good Pairs # 题目# Given an array of integers nums. A pair (i,j) is called good if nums[i] == nums[j] and i < j. Return the number of good pairs. Example 1: Input: nums = [1,2,3,1,1,3] Output: 4 Explanation: There are 4 good pairs (0,3), (0,4...
Can you solve this real interview question? Number of Good Leaf Nodes Pairs - You are given the root of a binary tree and an integer distance. A pair of two different leaf nodes of a binary tree is said to be good if the length of the shortest path betwe
https://leetcode.cn/problems/number-of-ways-to-reconstruct-a-tree 这道题曾经在周赛难度分top1呆了几年,如今已经不在难度分top5了。破局的关键是父节点的邻居数肯定不少于子节点,而根节点的邻居数一定是n-1。所以应该先找到根节点,然后逐层向下建树,子节点的邻居一定是父节点的子集,否则就是非法;如果子...
1793.Maximum-Score-of-a-Good-Subarray (M+) 1989.Maximum-Number-of-People-That-Can-Be-Caught-in-Tag (M+) 2354.Number-of-Excellent-Pairs (H-) 2422.Merge-Operations-to-Turn-Array-Into-a-Palindrome (H-) Sliding window 532.K-diff-Pairs-in-an-Array (H-) 611.Valid-Triangle-Number (M+...
https://leetcode-cn.com/problems/find-three-consecutive-integers-that-sum-to-a-given-number 题意 数学 思路 感觉是最简单的题目,我们知道三个连续的肯定为x-1, x, x + 1, 如果一个数可以分为三个连续的数的和,则自然可以得到y = 3 \times x,y能被3整除即可。
9 Palindrome Number // #9 回文数 描述:如题。 //#9Description: Palindrome Number | LeetCode OJ 解法1:跟回文串一个道理。 // Solution 1: Same as palindromic strings. 代码1 //Code 1 10 Regular Expression Matching // #10 正则匹配