Missing Number
Missing Number: Given an array nums containing n distinct numbers in the range [0, n], return the only number in the range that is missing from the array.
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Longest Consecutive Sequence
Longest Consecutive Sequence: Given an unsorted array of integers nums, return the length of the longest consecutive elements sequence. You must write an algorithm that runs in O(n) time. Example…
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Find the Duplicate Number
Find the Duplicate Number: Given an array of integers nums containing n + 1 integers where each integer is in the range [1, n] inclusive. There is only one repeated…
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Find All Numbers Disappeared in an Array
Find All Numbers Disappeared in an Array: Given an array nums of n integers where nums[i] is in the range [1,n], return an array of all the integers in the…
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Find All Duplicates In Array
Find All Duplicates In Array: Given an integer array nums of length n where all the integers of nums are in the range [1, n] and each integer appears once…
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Convert 1D Array into 2D Array
Convert 1D Array into 2D Array: You are given a 0-indexed 1-dimensional (1D) integer array original, and two integers, m and n. You are tasked with creating a 2-dimensional (2D)…