http://www.geeksforgeeks.org/maximum-sum-such-that-no-two-elements-are-adjacent/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream> #i…

http://www.geeksforgeeks.org/maximum-contiguous-circular-sum/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream> #include <map>…

http://www.geeksforgeeks.org/maximum-of-all-subarrays-of-size-k/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream> #include <map&g…

http://www.geeksforgeeks.org/find-if-there-is-a-subarray-with-0-sum/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream> #include <m…

http://www.geeksforgeeks.org/given-an-array-arr-find-the-maximum-j-i-such-that-arrj-arri/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstre…

http://www.geeksforgeeks.org/find-the-missing-number/ 1. use sum formula, O(n), O(1) 2. use XOR, O(n), O(1) 3. use counting sort, O(n), O(1), changing the array 4. use negtive, O(n), O(1), chaning the array #include <iostream> #include <vector>…

http://www.geeksforgeeks.org/largest-subarray-with-equal-number-of-0s-and-1s/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream> #incl…

http://www.geeksforgeeks.org/move-zeroes-end-array/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream> #include <map> #include &…

http://www.geeksforgeeks.org/given-an-array-of-of-size-n-finds-all-the-elements-that-appear-more-than-nk-times/ 这一题如果没空间要求就没那么麻烦了 #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #i…

http://www.geeksforgeeks.org/sort-elements-by-frequency-set-2/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream> #include <map>…

http://www.geeksforgeeks.org/find-the-two-numbers-with-odd-occurences-in-an-unsorted-array/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fst…

http://www.geeksforgeeks.org/longest-monotonically-increasing-subsequence-size-n-log-n/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream…

http://www.geeksforgeeks.org/find-the-minimum-distance-between-two-numbers/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream> #includ…

http://www.geeksforgeeks.org/array-rotation/ O(n), O(1) #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream> #include <map> using…

Design and implement a TwoSum class. It should support the following operations:add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. For example,add(1); add(…

Design and implement a TwoSum class. It should support the following operations:add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. For example,add(1); add(…

Design and implement a TwoSum class. It should support the following operations: add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. For example, add(1); ad…

原题链接在这里:https://leetcode.com/problems/two-sum-iii-data-structure-design/ 题目: Design and implement a TwoSum class. It should support the following operations: add and find. add - Add the number to an internal data structure.find - Find if there exists…

Design and implement a TwoSum class. It should support the following operations: add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. 这个解法很容易想到,但很容易超时. 基本来说有…

Question: Design and implement a TwoSum class. It should support the following operations: add and find. add(input) – Add the number input to an internal data structure. find(value) – Find if there exists any pair of numbers which sum is equal to the…

题目: Design and implement a TwoSum class. It should support the following operations: add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. For example, add(1)…

Design and implement a TwoSum class. It should support the following operations: add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. For example, add(1); ad…

Design and implement a TwoSum class. It should support the following operations: add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. For example, add(1); ad…

Design and implement a TwoSum class. It should support the following operations:add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. For example,add(1); add(…

Design and implement a TwoSum class. It should support the following operations: add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. Example 1: add(1); add(…

Design and implement a TwoSum class. It should support the following operations:add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. For example,add(1); add(…

Difficulty:easy  More:[目录]LeetCode Java实现 Description Design and implement a TwoSum class. It should support the following operations: addand find.add(input) – Add the number input to an internal data structure.find(value) – Find if there exists any…

［抄题］: 设计b并实现一个 TwoSum 类.他需要支持以下操作:add 和 find.add -把这个数添加到内部的数据结构.find -是否存在任意一对数字之和等于这个值 ［思维问题］: 不知道为什么要用到ArrayList. find函数要一个个检查有没有某元素,题中没有原始定义的数据结构,所以要用. 为什么不用数组:add添加的元素数量不确定,需要动态添加. ［一句话思路］: 就是写两个方法就行了. ［画图］: ［一刷］: hashmap, list都是第一次用于新的数据结构中,定义为…

Design and implement a TwoSum class. It should support the following operations: add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. For example, add(1); ad…

170. Two Sum III - Data structure design[easy] Design and implement a TwoSum class. It should support the following operations:add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum…