LeetCode: 26-Remove Duplicates from Sorted Array 解題紀錄
Last Updated on 2021-02-07 by Clay
題目
Given a sorted array nums, remove the duplicates in-place such that each element appears only once and returns the new length.
Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory.
Clarification:
Confused why the returned value is an integer but your answer is an array?
Note that the input array is passed in by reference, which means a modification to the input array will be known to the caller as well.Example:
Input: nums = [1,1,2]
Output: 2, nums = [1,2]
Explanation: Your function should return length = 2, with the first two elements of nums being 1 and 2 respectively. It doesn't matter what you leave beyond the returned length.題目輸入一個由小到大排序的陣列，我們需要回傳『沒有重複元素陣列長度』，並將這些沒有重複的元素移動至該陣列的開頭。
當然你可以選擇刪除掉重複的元素，但驗證時只會依照你回傳的長度進行該陣列的檢測。比方說你回傳 1，那麼驗證機制只會檢測陣列開頭第 1 個元素。
Read More »LeetCode: 26-Remove Duplicates from Sorted Array 解題紀錄