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Photo by Markus Spiske on Unsplash

Question

Input: s = "A man, a plan, a canal: Panama"
Output: true
Explanation: "amanaplanacanalpanama" is a palindrome.
Input: s = "race a car"
Output: false
Explanation: "raceacar" is not a palindrome…


LeetCode Algorithm Challenges

How to solve LeetCode Algorithm Challenges?

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Question

Input: rowIndex = 3
Output: [1,3,3,1]
Input: rowIndex = 0
Output: [1]
Input: rowIndex…


Question

Input: numRows = 5
Output: [[1],[1,1],[1,2,1],[1,3,3,1],[1,4,6,4,1]]
Input: numRows = 1
Output: [[1]]

What is Pascal’s triangle?


Input: nums = [2,2,1]
Output: 1
Input: nums = [4,1,2,1,2]
Output…

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Input: nums…

Question

Input: root = [3,9,20,null,null,15,7]
Output: true


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Input: root = [5,4,8,11,null,13,4,7,2,null,null,null,1], targetSum = 22
Output…


Question 1

Nick Solonyy

Full-stack software engineer with an international MBA. Project Management and Team Collaboration experience. React | Javascript | Redux | Rails

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