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20. Valid Parentheses - JavaScript Solution - by Abu Saleh Faysal

Feb 10, 2023 · 2 min read · An array of parentheses are given. We need to find out if the array contains both opening and closing parentheses or not. Steps: Declare a variable called "stack" and store an empty array. Iterate a for loop over the given array and store the array...

14. Longest Common Prefix - JavaScript Solution - by Abu Saleh Faysal

Jan 20, 2023 · 2 min read · After seeing the problem, I determined that iterating the first element of the array and iterating the whole array could be a straightforward approach to solving this problem. Solution: Step 01: declare a variable named "prefix" and set the initial v...

13. Roman to Integer - JavaScript Solution - by Abu Saleh Faysal

Dec 7, 2022 · 2 min read · Given a roman numeral, we need to convert it to an integer. After seeing the problem, I thought that I can try with an object to store the roman symbol value and for loop to access the given string. Solution Step 01: Store the roman symbol value in a...

9. Palindrome Number - JavaScript Solution - by Abu Saleh Faysal

Nov 16, 2022 · 1 min read · Checking "Palindrome number" is a very widespread problem. Compared to the other languages, I found it easier to solve this problem with JavaScript. Solution: Step 01: Convert x into string using toString(). Step 02: Split the string using split(). S...

1. Two Sum - Leetcode - JavaScript Solution using HashMap - by Abu Saleh Faysal

Nov 12, 2022 · 2 min read · I previously solved this problem using two for loops. However, that was not a very efficient way to solve this problem. So, this time I solved this problem using HashMap. Solution: Step 01: Hashmap is a set of key, value pairs. I declared a variable ...