Leetcode 125: Valid Palindrome
The original question can be found here. The question is asking for a given string, determine if it’s palindromic. Only […]
solutions
September 2024
solutions
Leetcode 5: Longest Palindromic Substring
The original question can be found here. There’re multiple solutions to this question, and we’ll start with the brute force
interview-skills
Interview Skills and Coding Styles
Here are some interview skills and coding styles that on top of my head. Interview Skills Try to avoid “I
solutions
Leetcode 4: Median of Two Sorted Arrays
The original question can be found here. The question is asking to return the median number of 2 sorted arrays.
solutions
Leetcode 349: Intersection of two arrays
The original question can be found here. The question is aksing for the intersection of two arrays, and element in
solutions
Leetcode 88: Merge Sorted Array
The original question can be found here. It’s asking us to merge array nums2 into array nums1. The most straightforward
solutions
Leetcode 560: Subarray Sum Equals K
The orignal question can be found here. The question is asking the number of subarrays which the sum value equals
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Leetcode 53: Maximum Subarray
The original question can be found here. The question is aksing for the largest sum of the subarray. We can
solutions
Leetcode 239: Sliding Window Maximum
The original question can be found here. The question is asking to find the maximum number inside each sliding window(subarray).
topics
Prefix Sum
Prefix sum is a very useful technique which can be used for some subarray questions. Let’s look at how it