# coding challenge

### [Solved] Find Two Unique Numbers from Array in O(n) Time

Problem Statement: Find Two Unique Numbers from Array in O(n) Time Let's assume all numbers except two occur twice in an array. How do you get those two numbers to occur only...

### [Solved] Find Duplicate in Array in O(n) Linear Time

Problem Statement: An array contains n numbers ranging from 0 to n-1. There are some numbers duplicated in the array. It is not clear how many numbers are duplicated or how...

### [Solved] Group Anagrams From Given List | Coding Challenge

Problem Statement: Group Anagrams- You have given a list of words. Write a program to returns a list of sets of anagrams. Args: words - list of words to...

### Smallest Subarray with Sum Greater Than or Equal To Given Number

Problem statement: Find out the length of the minimum subarray whose sum is greater than or equal to the given number. This question was asked in many product-based companies...

### [Coding Challenge] Special Elements in Matrix

This coding challenge was asked in Goldman Sachs coding round. Problem Statement: Given a matrix of size m*n, m denotes the row starting with index 0 and n denotes the...

### [Coding Challenge] Secure My Conversation by Encryption and Decryption

This is competitive coding question was asked in Goldman Sachs coding round. There were two coding questions which are needed to be solved in two hours. Basically you can take...

### 6 Reasons | Why Competitive Programming is Important?

Can Competitive Programming Be An Excellent Platform For Quality Programmers? Let us be honest for a moment and acknowledge the fact that we hate doing homework assignments....

### Python Competitive Programming Questions for Practice

This space is to list Python competitive programming questions. You can use questions for coding practice. As we progress, I will keep adding more coding questions...

### How to Find Next Greater Number with Same Set of Digits in C?

This is Quiz question as well as asked in many placement interviews to write code to find next greater number with the same set of digits of a given number. Problem...