## Zigzag String

Concepts Used Strings Difficulty Level Easy Problem Statement (Simplified): For a given string S and number of rows R, we have to arrange each character on rows in a vertical...

## Light in night

CONCEPTS USED: Sorting DIFFICULTY LEVEL: Medium PROBLEM STATEMENT(SIMPLIFIED): Given an array A containing N bulbs placed on the road of length L, these bulbs can be placed at any point...

## Find Substring

Concepts Used Strings Difficulty Level Easy Problem Statement (Simplified): For given two strings A and B, print out if B is a substring of A or not. If yes print...

## Number of Substrings Containing All Three Characters

Concepts Used Strings, Sliding Window Algorithm using two pointers Difficulty Level Medium Problem Statement (Simplified): Print the number of substrings containing all three characters i.e. a,b,c at least once in...

## Power Of 2

Concepts Used Strings, Mathematics Difficulty Level Hard Problem Statement (Simplified): Find if the number given as a string is the power of two or not. Return 1 if yes, else...

## Character Combine

CONCEPTS USED: Recursion DIFFICULTY LEVEL: Medium PROBLEM STATEMENT(SIMPLIFIED): Given two characters C1, C2 and an integer K, print all the possible K length combinations of both the characters. Print the...

## Generate all Pairs of 0 and 1

CONCEPTS USED: Recursion DIFFICULTY LEVEL: Hard PROBLEM STATEMENT(SIMPLIFIED): Given N pairs of Binary Numbers 0 and 1, your task is to generate all possible combinations such that for each 0...

## Students Roll Number

CONCEPTS USED: Basic Mathematics DIFFICULTY LEVEL: Easy PROBLEM STATEMENT(SIMPLIFIED): Given N seats, where English paper students are evenly placed (0,2,4,...) and Hindi paper students are oddly placed (1,3,5,...). Print the...

## Find Maximum

CONCEPTS USED: Arrays DIFFICULTY LEVEL: Hard PROBLEM STATEMENT(SIMPLIFIED): Given an array A of N positive integers. The task is to find the maximum of j - i such that A[j]...

## Find the Missing

CONCEPTS USED: Basic Mathematics DIFFICULTY LEVEL: Medium PROBLEM STATEMENT(SIMPLIFIED): Given an array A with N-1 elements, with elements from 1 to N present into it. Find a single missing element....