Finding the longest Palindrome substring is a classic problem of coding interview. Inthis post, I will summarize 3 different solutions for this problem. 3.1 Naive Approach Naively, we can simply examine every substring and check if it is palindromic. Thetime complexity is O(nˆ3). If this is submitted to LeetCode online Read more…
The problem: Evaluate the value of an arithmetic expression in Reverse Polish Notation.Valid operators are +, -, , /. Each operand may be an integer or another expression. Some examples: [“2”, “1”, “+”, “3”, ““] -> ((2 + 1) * 3) -> 9[“4”, “13”, “5”, “/”, “+”] -> (4 + Read more…
Problem: Rotate an array of n elements to the right by k steps. For example, with n = 7 and k = 3, the array [1,2,3,4,5,6,7] is rotated to [5,6,7,1,2,3,4]. How many different ways do you know to solve this problem? 1.1 Solution 1 – Intermediate Array In a straightforward Read more…
Linux is an open-source operating system kernel initially developed by Linus Torvalds in 1991. It is maintained by a large community of developers and contributors worldwide who collaborate on its development and improvement. Here’s the list of top 30 Linux commands with examples in code blocks: 1. `ls`: List files Read more…
Master Java fundamentals and ace your SDET interviews with our curated set of 30 essential programming challenges, covering everything from string manipulation to unit testing with Mockito. 1. Reverse a String: – Write a Java program to reverse a given string. 2. Find the Largest Element in an Array: – Read more…
Welcome to our comprehensive guide on Jenkins interview questions for automation testing roles. In this section, we’ll cover essential questions that interviewers may ask to assess your knowledge and experience with Jenkins in the context of automation testing. Jenkins is a popular open-source automation server for continuous integration and continuous Read more…
Discover important Git commands for better version control, including rebase and cherry-pick. Improve your development skills with easy-to-follow explanations and examples. 16. git rebase: Reapply commits on top of another base tip 17. git cherry-pick: Apply changes introduced by some existing commits. 18. git stash: Stash changes in a dirty Read more…