Find All Numbers Disappeared in an ArrayGiven an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements of [1, n] inclusive
Third Maximum NumberGiven a non-empty array of integers, return the third maximum number in this array. If it does not exist, return the maximum number. The time complexity must be in O(n). Example 1
Move ZeroesGiven an array nums, write a function to move all 0’s to the end of it while maintaining the relative order of the non-zero elements. For example:1Given nums = [0, 1, 0, 3, 12], after call
Missing NumberGiven an array containing n distinct numbers taken from 0, 1, 2, …, n, find the one that is missing from the array. For example:1Given nums = [0, 1, 3] return 2. Note: Your algorithm sh
Contains Duplicate IIGiven an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j] and the absolute difference between
Contains DuplicateGiven an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false
Rotate ArrayRotate an array of n elements to the right by k steps. For example, with n = 7 and k = 3, the array [1,2,3,4,5,6,7] is rotated to [5,6,7,1,2,3,4]. Note: Try to come up as many solutions a
Majority ElementGiven an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. You may assume that the array is non-empty and the major
Best Time to Buy and Sell StockSay you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction (ie, buy one and
Pascal’s Triangle IIGiven an index k, return the kth row of the Pascal’s triangle. For example, given k = 3,Return [1,3,3,1]. Note: Could you optimize your algorithm to use only O(k) extra space?
Pascal’s TriangleGiven numRows, generate the first numRows of Pascal’s triangle. For example:Given numRows = 5, Return 1234567[ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1]] 提示 解題應用 A
Merge Sorted ArrayGGiven two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note: You may assume that nums1 has enough space (size that is greater or equal to m +
Remove ElementGiven an array and a value, remove all instances of that value in place and return the new length. Do not allocate extra space for another array, you must do this in place with constant
Remove Duplicates from Sorted ArrayGiven a sorted array, remove the duplicates in place such that each element appear only once and return the new length. Do not allocate extra space for another arra