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Performance is a subset of Optimization: performance is the goal when you want the execution time of your program or routine to be optimal.

9 votes
4 answers
2k views

Leetcode : First Missing Positive

I was trying out leetcode's first missing positive. As per the challenge's description: Given an unsorted integer array nums, return the smallest missing positive integer. You must implement an algo …
ccot's user avatar
  • 341
5 votes
1 answer
344 views

Leetcode: Largest Number

I was trying out leetcode's Largest Number. As per the challenge's description: Given a list of non-negative integers nums, arrange them such that they form the largest number and return it. Since t …
ccot's user avatar
  • 341
4 votes
2 answers
501 views

Leetcode: Steps to Make Array Non-decreasing

I was trying out leetcode's Steps to Make Array Non-decreasing As per the challenge's description: You are given a 0-indexed integer array nums. In one step, remove all elements nums[i] where nums[i …
ccot's user avatar
  • 341
3 votes
1 answer
227 views

Leetcode: Number of Islands - BFS (Queue vs Recursion)

I was playing around with leetcode's Number of Islands. As per the challenge's description: Given an m x n 2D binary grid grid which represents a map of '1's (land) and '0's (water), return the numbe …
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  • 341
0 votes
Accepted

Leetcode: Steps to Make Array Non-decreasing

Update After several trials and coming up with multiple approaches, this exercise is not solvable in O(1) memory space/ with O(n) time complexity - to the best of my knowledge and trials past couple …
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