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…
This is also one of the java interview program asked many a times to java freshers to check the candidate’s logical ability and understanding of the language’s fundamentals. While writing the program you should not use any sorting methods or any collection types. You should find the second largest number Read more…
This is one of the most frequently asked java program in the technical round of java fresher’s interview. Interviewer may ask you to write different ways to reverse a string or he may ask you to reverse a string without using in-built methods or he may ask you to reverse Read more…
Crack Your Selenium Automation Interview: Top Questions for Success