In this blog post, we’ve discussed some popular strategies for solving problems in data structures and algorithms. Mastering and applying these strategies can help you more effectively tackle problems and crack the coding interview. An Incremental approach using Single and Nested loops One common approach to problem-solving is to build a solution incrementally using a loop. …

System design is an important topic for both technical interviews and real-world software development. It’s used to solve large-scale problems and is often asked about in interviews at tech companies. This blog will introduce you to the basic concepts of system design. What is System Design? System design deals with designing a system that…

All over the world, millions of programmers are looking forward to pursuing a dream career in programming and computer science. On an average, a dedicated programmer is spending atleast thousand hours in learning data structure & algorithms and preparing for the coding interview. Unfortunately, lot of guidance and learning resources…

Difficulty: Medium, Asked-in: Microsoft, Amazon, Goldman Sachs, Qualcomm, Bloomberg, Paytm Why merge sort? Merge sort uses a divide-and-conquer idea to sort input elements into increasing order. Here are some critical reasons to learn this algorithm: Merge sort is an efficient sorting algorithm that works in O(nlogn) time complexity (both best and worst cases). …

Difficulty: Medium, Asked-in: Facebook, Microsoft, Key takeaway after reading this blog: You will learn problem solving using single loop and divide and conquer approach. In the single loop approach, we are incrementing loop by 2 to solve the problem using minimum number of comparisons. Problem understanding Given an array X[] of size…

Sorting is one of the fundamental coding problems in data structure and algorithms. The critical question is: why do we study the design and analysis of the sorting algorithms? Here are some critical reasons: Reason 1: We can learn various problem-solving approaches using sorting algorithms The sorting problem can be solved using various ideas. So sorting algorithm is one of the…

Difficulty: Medium, Asked-In: Amazon, Microsoft, Facebook Key takeaway: An excellent problem to learn problem-solving using binary search. Square Root problem Given a natural number n, find the largest integer that is less than or equal to √n. This can be seen as a search problem where the search space S is the set…

Difficulty: Medium, Asked-in: Google, Amazon Problem Statement There are 25 horses among which we need to find out the fastest 3 horses. In each race, only 5 horses can run simultaneously because there are only 5 tracks. …

Difficulty: Medium, Asked-in: Microsoft, SAP Labs Key takeaways The Euclidean algorithm is one of the oldest and most widely known algorithms. It is a method of computing the greatest common divisor (GCD) of two integers m and n. One of the best problems to learn problem-solving using the decrease and…