Can you solve this real interview question? Sum of Unique Elements - You are given an integer array nums. The unique elements of an array are the elements that appear exactly once in the array. Return the sum of all the unique elements of nums. Exam
Input: matrix = [[1,-1],[-1,1]] Output: 4 Explanation: We can follow the following steps to reach sum equals 4: - Multiply the 2 elements in the first row by -1. - Multiply the 2 elements in the first column by -1. Example 2: Input: matrix = [[1,2,3],[-1,-2,-3],...
LeetCode-Range Sum Query 2D - Mutable Given a 2D matrixmatrix, find the sum of the elements inside the rectangle defined by its upper left corner (row1,col1) and lower right corner (row2,col2). The above rectangle (with the red border) is defined by (row1, col1) =(2, 1)and (...
LeetCode 1748. Sum of Unique Elements LeetCode 1748. Sum of Unique Elements (唯一元素的和) 题目 链接 https://leetcode-cn.com/problems/sum-of-unique-elements/ 问题描述 给你一个整数数组 nums 。数组中唯一元素是那些只出现 恰好一次 的元素。 请你返回 nums 中唯一元素的 和。 示例 输入:nums =...
Given a matrix of M x N elements (M rows, N columns), return all elements of the matrix in diagonal order as shown in the below image. Example: Note: The total number of elements of the ...LeetCode #498 - Diagonal Traverse 题目描述: Given a matrix of M x N elements (M rows,...
1572. Matrix Diagonal SumEasy Topics Companies Hint Given a square matrix mat, return the sum of the matrix diagonals. Only include the sum of all the elements on the primary diagonal and all the elements on the secondary diagonal that are not part of the primary diagonal. Example 1: Input...
[leetcode] 1748. Sum of Unique Elements Description You are given an integer array nums. The unique elements of an array are the elements that appear exactly once in the array. Return the sum of all the unique elements of nums. Example 1:...
LeetCode: 327. Count of Range Sum Given an integer array nums, return the number of range sums that lie in [lower, upper] inclusive. Range sum S(i, j) is defined as the sum of the elements in nums between indices i and j (i ≤ j), inclusive. ...
3112. 访问消失节点的最少时间 Minimum Time to Visit Disappearing Nodes 力扣 LeetCode 题解 11:01 2959. 关闭分部的可行集合数目 Number of Possible Sets of Closing Branches 力扣 LeetCode 题解 17:28 2956. 找到两个数组中的公共元素 Find Common Elements Between Two Arrays 力扣 LeetCode 题解 04:...
1. The rectangle inside the matrix must have an area > 0. 2. What if the number of rows is much larger than the number of columns? 现有一个由整数构成的矩阵,问从中找到一个子矩阵,要求该子矩阵中各个元素的和为不超过k的最大值,问子矩阵中元素的和为多少?