1. Let’s fetch the latest version of the package list from the repositories. sudo apt update 2. Upgrade the installed packages. sudo apt upgrade 3.… Read More »How to upgrade Ubuntu server 20.04 to Ubuntu 22.04 (latest)
To convert PKCS#p12 file to a PEM file, use: openssl pkcs12 -in cert.p12 -out cert.pem -nodes -clcerts Now you will have both the certificate and… Read More »How to Convert a Apple Certificate .p12 file to a PEM File
You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contains a… Read More »Python: Add Two Numbers – Linked List
Given an array of integers, return indices of the two numbers such that they add up to a specific target. The below python code will… Read More »Python: Two Sum Problem
Pyhton 3 code to implement a stack with push, pop and seekMin function with time complexity of O(1) class Stack: def __init__(self): self.items = []… Read More »Python: Stack with Push, Pop and seek Minimum Value with O(1)
Python 3 code to find the Lowest Common Ancestor of a Binary Tree This is a Non Recursive solution using DFS method. class Node(): def… Read More »Python: Lowest Common Ancestor of a Binary Tree – Non Recursive