[LeetCode] Valid Mountain Array
Question Given an array of integers arr, return true if and only if it is a valid mountain array. Recall that arr is a mountain array if and only if: ...
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[LeetCode] Check If N and Its Double Exist
Question Given an array arr of integers, check if there exists two integers N and M such that N is the double of M ( i.e. N = 2 * M). 리스트의 요소들 중에, (한 요소)*2를...
[LeetCode] Remove Duplicates from Sorted Array
Question Given an integer array nums sorted in non-decreasing order, remove the duplicates in-place such that each unique element appears only once. The rela...
[LeetCode] Remove Element
Question Given an integer array nums and an integer val, remove all occurrences of val in nums in-place. The relative order of the elements may be changed. S...
[LeetCode] Merge Sorted Array
Question You are given two integer arrays nums1 and nums2, sorted in non-decreasing order, and two integers m and n, representing the number of elements in n...