Solve by topics

Calculate square of a number

Minimum Value

Find Kth row of Pascal's Triangle

Strings Using a, b And c

Optimal Strategy for a Game

Walls and gates

Topological Sort

Game of Stones

Max Stack

Find Smallest Substring

Longest subset zero sum

Permutation in String

Predecessor and Successor

Distinct Subsequences

Maximize the sum

Program to validate IP address

Decimal to Octal Conversion

Minimize the maximum difference between adjacent elements in an array

Distinct Left

Increasing Path In Matrix

Number Pattern

Ways to arrange balls

Rearrange string

Disjoint Intervals

String Transformation