coding challenge
[Solved] Minimum Arrows Required to Burst Balloons
Problem Statement: "Minimum arrows required to burst balloons" Given an array A, where A represents the height of the balloon from the ground. You are shooting arrows from...
[Solved] Find Lexicographically Smallest and Largest Substring
Problem Statement: You are given a string (says 's'), and an integer ( says 'k'). Write a program to find the lexicographically smallest and largest substring from given...
[Solved] HourGlass with Largest sum in 2D Array in Python and Java
First of all understand the Hourglass. It is shaped as shown in the below image. There can be multiple hourglass in the 2D array (matrix). Problem Statement: Write a...
[Solved] Sort Characters by Frequency in Python String
This is one of the questions asked in the coding interview. This question looks difficult. But, Python makes it easy, if you have an understanding of basic Python...
[Solved] Hailstone Sequence in Python (With or Without Recursion)
In this tutorial, you will learn what is hailstone sequence, how to write a Python program to find the hailstone sequence with and without recursion. Let's start with basic...
Program to Remove All Duplicates Chars from a given String in Python
Problem Statement: You have given a string. You need to remove all the duplicates from the string. The final output string should contain each character only once. The...
[Solved] PostOrder Traversal of Binary Tree Without Recursion
Traversing elements in postorder traversal with recursion is easy. You can read the postorder traversal in detail where I have explained it with binary tree example and...
Print all Valid Parentheses | Generate Balanced Parentheses Python
Problem Statement Print all the valid parentheses combinations for the given number. Or, generate balanced parentheses using any programming languages like C/C++, Python,...
Minimum Cost of Merging Files [Amazon Coding Test Question]
This programming challenge is asked in the Amazon coding round hosted on the Amcat platform. There will be two coding questions to be solved in 90 minutes. So you can take 45...