Problem Statement You are given two arrays of which each contains binary number. The problem statement asks to find longest span with same sum in two binary arrays, that is to find out the maximum length common sub-array from (i, j) in such a way that j is greater than …
Given an array or set which contains n elements. Here the elements are unique or there is no repetition. Shuffle an array(or a set) of numbers without duplicates. Example // Init an array with set 2, 4, 3 and 1. int[] nums = {2, 4, 3, 1}; Shuffle object = …
HashMaps are one of the most useful data structures. Find the number of employees under every employee is a problem that reminds me of the famous movie’s inception. Akin to dream in a dream. Here, we have an employee working under an employee and so on. Problem Statement So, what …
Three Sum is a problem loved by interviewers. It is a problem I was personally asked during the Amazon interview. So, without wasting any more time let us get to the problem. An array that has both positive and negative numbers. Three numbers that sum up to zero/can be modified, …
Divisible Pairs is one of the interviewer’s favorite problem. This problem is good enough for testing interviewees’ problem skills along with knowledge on topics like arrays and hash-maps. Problem Statement: We have been provided with a selection of distinct positive integers. What to find? The number of pairs such that …
We have a message that we want to deliver. We want the message to be of least size possible so that the costs incurred in sending the message is low. Here we use the Huffman Coding concept to reduce the size of the message. Let’s assume that we have the …
In substring with the concatenation of all words problem, we have given a string s and a list consist of many words each of the same length. Print the starting index of the substring which can be the result of the concatenation of all the words in the list in …
In top K frequent words problem, we have given a list of words and an integer k. Print k most frequently used strings in the list. Example Input : list = {“code”, “sky”, “pen”, “sky”, “sky”, “blue”, “code”} k = 2 Output : sky code Input : list = {“yes”, …
In intersection of two arrays problem, we have given two arrays, we need to print their intersection(common elements). Example Input arr1[] = {1, 2, 2, 1} arr2[] = {2, 2} Output {2, 2} Input arr1 = {4, 9, 5} arr2 = {9, 4, 9, 8, 4} Output {4, 9} Algorithm …
Ankur and Rishabh are two friends and want to buy some fruits from the market. They both have a list of their favourite fruit represented by strings. Your task is to help them find out their common favourite fruit with the minimum index sum. If there is a tie in …