LeetCode – Arrays – Minimum Absolute Difference
Given an array of distinct integers arr, find all pairs of elements with the minimum absolute difference of any two elements. Return a list of pairs in ascending order(with respect…
How to Dockerize a Django 3.0 Web Application
We will dockerize a Django web application in this post and for this we will consider the django application which we built in the previous post. In my previous post,…
LeetCode – Tree – Invert Binary Tree
Invert a binary tree. Example: Input: 4 / \ 2 7 / \ / \ 1 3 6 9 Output: 4 / \ 7 2 / \ / \ 9…
LeetCode – Tree – Leaf-Similar Trees
Consider all the leaves of a binary tree. From left to right order, the values of those leaves form a leaf value sequence. For example, in the given tree above,…
LeetCode – Tree -Sum of Root To Leaf Binary Numbers
Given a binary tree, each node has value 0 or 1. Each root-to-leaf path represents a binary number starting with the most significant bit. For example, if the path is…
How to build a basic Django 3.0 application
There are various python web frameworks and Django is one of the most popular ones. If we compare Django with Flask, we can say full-stack vs lightweight. If you want…
LeetCode – Arrays – Lucky Integer in an Array
Given an array of integers arr, a lucky integer is an integer which has a frequency in the array equal to its value. Return a lucky integer in the array.…
LeetCode – Arrays – Find the Distance Value Between Two Arrays
Given two integer arrays arr1 and arr2, and the integer d, return the distance value between the two arrays. The distance value is defined as the number of elements arr1…
LeetCode – Strings – Is Subsequence
Given a string s and a string t, check if s is subsequence of t. You may assume that there is only lower case English letters in both s and…
LeetCode – Strings – Remove Palindromic Subsequence
Given a string s consisting only of letters 'a' and 'b'. In a single step you can remove one palindromic subsequence from s. Return the minimum number of steps to…