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题目很简单，现在给出我的解答代码：class Solution {public: int maxAreaOfIsland(vectorvectorint>>& grid) { int result = 0; vectorvectorint> > flag(grid.size()); for (int i = 0; i < grid.si

题目描述Given a linked list, reverse the nodes of a linked list k at a time and return its modified list.k is a positive integer and is less than or equal to the length of the linked list. If the numb...

题目描述Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity.Example:Input: [ 1-&gt;4-&gt;5, 1-&gt;3-&gt;4, 2-&gt;6 ] Output: 1-&gt;1-&gt;2-&...

题目描述Given a linked list, remove the n-th node from the end of list and return its head.Example:Given linked list: 1-&gt;2-&gt;3-&gt;4-&gt;5, and n = 2.After removing the second node from the e...

题目描述You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and re...

题目描述：In MATLAB, there is a very useful function called ‘reshape’, which can reshape a matrix into a new one with different size but keep its original data.You’re given a matrix represented by a tw

题目描述：Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), …, (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large as

题目描述：Given 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: Input: [3,

题目描述：Given an integer array, you need to find one continuous subarray that if you only sort this subarray in ascending order, then the whole array will be sorted in ascending order, too.You need t

题目描述Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number.The function twoSum should return indices of the two nu

题目描述：Given 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 array, you must do this by modif

题目描述Given an array of integers nums, write a method that returns the “pivot” index of this array.We define the pivot index as the index where the sum of the numbers to the left of the index is equ

题目描述：Given an integer array, find three numbers whose product is maximum and output the maximum product.Example 1: Input: [1,2,3] Output: 6Example 2: Input: [1,2,3,4] Output: 2

题目描述：Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements.Your task is to find the smallest possible lengt

题目描述：Given 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 that do not appear in this array

题目描述Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list.For example, Given 1-&gt;2-&gt;3-&gt;3-&gt;4-&gt;4-&gt;5, return...