Introduction to System Design
Note: Before starting reading this Tutorial, let us be clear about below things: 1. System design is a very vast topic, and covering every…
Searching and Sorting: Find the majority element in the array
Problem Statement: You are given an arrya of repeating elements. You need to find and print the majority element. An element that appears more…
Arrays: Find numbers with even number of digits
Problem Statement: You are given an array of integers. You need to return the count of the numbers that has even number of digits. Example…
Arrays: Find unique numbers that sum upto zero
Problem Statement: You are given an integer n. You need to return the integers that sum upto 0. Example Input: n = 5 Output: {-5, -1, 1, 2, 3}…
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…