Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview.

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Enhance your coding abilities and get valuable real-world feedback by participating in contests on LeetCode. You can also win up to 5000 LeetCoins per contest, as well as bonus prizes from …

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Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview.

Can you solve this real interview question? Length of Last Word - Given a string s consisting of words and spaces, return the length of the last word in the string. A word is a maximal substring consisting …

Can you solve this real interview question? Reverse String - Write a function that reverses a string. The input string is given as an array of characters s. You must ...

Can you solve this real interview question? Coin Change - You are given an integer array coins representing coins of different denominations and an integer amount representing a total amount of …

Can you solve this real interview question? Longest Repeating Character Replacement - You are given a string s and an integer k. You can choose any character of the string and change it to any other …

The actual trick comes when trying to solve this problem without using any additional memory. This means you need to use the original array somehow to move the elements around. Now, we can …