Coding Exercise: Sum of Digits in the Minimum Number
Given an array A of positive integers, let S be the sum of the digits of the minimal element of A. Return 0 if S is odd, otherwise return …
Category: coding exercise
How to Design a High Performance/Scalable Hit Counter Class?
June 11, 2019
algorithms, c / c++, coding exercise, data structure, design questions, OOP
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Design a hit counter which counts the number of hits received in the past 5 minutes. Each function accepts a timestamp parameter (in seconds granularity) and you may assume …
Algorithms to Count Subarray (Contiguous) Sum That Equals k
Given an array of integers and an integer k, you need to find the total number of continuous subarrays whose sum equals to k. Example 1: Input:nums = , …
Algorithms to Find Maximum Size Subarray (Contiguous) Sum That Equals k
Given an array nums and a target value k, find the maximum length of a Contiguous subarray that sums to k. If there isn’t one, return 0 instead. The …
The Algorithm to Construct the Rectangle Given Its Area
For a web developer, it is very important to know how to design a web page’s size. So, given a specific rectangular web page’s area, your job by now …