Arrays: Check If N and Its Double Exist
Problem Statement: You are given an array, you need to check if a number and its double exist in that array. Example Input arr = {10, 2, 5, 3}…
Arrays: Check if 3 consecutive odds exist
Problem Statement: You are given an array, you need to check if there are 3 consecutive odds exist. If exist then return true else false.…
Strings: Check if Word Equals Summation of Two Words
Problem Statement: You are given 3 words. You need to check if the summation of the letters lead up to third word. Example Input: s1 =…
Strings: Longer Contiguous Segments of Ones than Zeros
Problem Statement: You are given a binary string, you need to return true if the longest contiguous sequence of 1s is greater than the longest…
Strings: Minimum Number of Swaps to Make the Binary String Alternating
Problem Statement: You are given a binary string of 0s and 1s. You need to get the minimum steps to make the string alternating. Example…
Strings: Longest Substring Of All Vowels in Order
Problem Statement: You are given a string, that contains only vowels and you need to get the longest substring that has all vowels…
Strings: Number of Different Integers in a String
Problem Statement: You are given a string that has numbers. Now you will replace the characters with space. Now count the number of distinct…
Heap: kth largest element in a stream
Problem Statement: You are given an infinite stream of integers, you need to find the kth largest element at any point of time. Example Input:…
Heap: Sum of all the elements between k1 and k2 smallest elements
Problem Statement: You are given array of integers and 2 numbers k1 and k2. You need to find the sum of all the elements between the given 2…
Heap: Connect ropes with minimum cost
Problem Statement: You are given n ropes of different lengths. You need to connect the ropes into one rope. The cost to connect 2 ropes is…