Leet code : sort colors in Array

Interface

Encapsulation

Static clear example

Abstract

Super class

Multi level inheritance and simple override

This keyword example

Leet code-7 : Reverse Integer

oops : Inheritance

Leetcode-1 : Two Sum

Leetcode-136 : find single number

oops : static usages

Question : stream of characters

Question ; selection sort in recursion

Question : bubble sort in recursion

Question : find target in RBS array

Question : find all index in this array using recursion and array list

Question : search in array with many ways

Question : reverse number with recursion

Question : sum of digits

Maths formulas

Question : armstrong number or not

Question : palindrome or not

Question : reverse number

Question : count digits with log10(n)

Question : prime or not

Bitwise operators

Binary search with recursion