How to Compute Running Sum of 1d Array using std::partial_sum in C++?
Given an array nums. We define a running sum of an array as runningSum = sum(nums…nums). Return the running sum of nums. Example 1: Input: nums = Output: Explanation: …
Tag: c++
Recursive Algorithm to Construct Binary Tree from Preorder and Postorder Traversal
Return any binary tree that matches the given preorder and postorder traversals. Values in the traversals pre and post are distinct positive integers. Example 1: Input: pre = , …
Prefix Sum Algorithm to Count Number of Nice Subarrays
Given an array of integers nums and an integer k. A subarray is called nice if there are k odd numbers on it. Return the number of nice sub-arrays. …
Depth First Search Algorithm to Compute the Smallest String Starting From Leaf
Given the root of a binary tree, each node has a value from 0 to 25 representing the letters ‘a’ to ‘z’: a value of 0 represents ‘a’, a …
Algorithm to Check if All Points are On the Same Line
You are given an array coordinates, coordinates = , where represents the coordinate of a point. Check if these points make a straight line in the XY plane. Input: …