K Closest Points to Origin using Custom Sorting Algorithm in C++/Java
We have a list of points on the plane. Find the K closest points to the origin (0, 0). (Here, the distance between two points on a plane is …
Category: algorithms
Using Hash Set to Determine if a String is the Permutation of Another String
Given two strings s1 and s2, write an algorithm to determine if s1 is one permutation of s2. For example: s1 = “abc”, s2 = “bca” output: true s1 …
Recursive Algorithm to Get Proxy Votes on Steem Blockchain
Regarding this tool: Get Proxy Votes on Steem Blockchain, In case you might not notice, this tool also returns the indirect proxy supporters. For example, danielhuhservice proxies to der-prophet, …
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 …