How to prepare for your next Coding Interview
Here are some tips while preparing for your coding interviews. 1. Do study or…
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How to calculate angle between hour and minute hand, given a time
This problem is a simple mathematical calculation. Lets start deriving some…
Convert String to Integer - atoi - Leet Code Solution
Problem Statement Implement atoi which converts a string to an integer…
Check whether number is palindrome or not - Leet Code Solution
Problem Statement Determine whether an integer is a palindrome. An integer is a…
Zigzag Pattern String Conversion - Leet Code Solution
Problem Statement The string “PAYPALISHIRING” is written in a zigzag pattern on…
Reverse digits of a signed integer - Leet Code Solution
Problem Statement Given a signed integer, reverse digits of an integer. Return…
Longest Palindrome Substring - Leet Code Solution
Problem Statement Given a string s, find the longest palindromic substring in s…
Find the Median of Two Sorted Arrays - Leet Code Solution
Problem Statement There are two sorted arrays nums1 and nums2 of size m and n…
Longest Substring without repeating characters - Leet Code Solution
Problem Statement Given a string, find the length of the longest substring…
Add two numbers(reverse order) link list Problem - Leet Code Solution
Problem Statement You are given two non-empty linked lists representing two non…
Radix Sort Algorithm
A number consists of digits. Example: 843. Its a 3-digit number. Radix sort…
Counting Sort Algorithm
Counting sort runs on relatively smaller set of input. Counting sort calculates…
Young Tableau problem - Cormen
Young Tableau A a X b matrix is Young Tableau if all rows(from left to right…
Min Priority Queue Implementation with Heap Data structure
Min Priority Queue is a data structure which manage a list of keys(values). And…
Max Priority Queue Implementation with Heap Data structure
Max Priority Queue is a data structure which manage a list of keys(values). And…
Two Sum Problem - Leet Code Solution
Problem Statement Given an array of integers, return indices of the two numbers…
Heap Sort Algorithm
This is another very useful sorting algorithm based on Heap data structure. Read…
Index for Coding Problems
Sorting Problems Merge Sort Quick Sort Heap Sort Bubble Sort Selection Sort…
What is Heap Data Structure
Its a tree based data structure which is a complete binary tree(all nodes have…
How to nail your Coding Interview
Here are some tips while giving your coding interviews. 1. Never try to jump to…
Maximum Subarray Problem
Problem Statement You are given an array of integers. And, you have find the…