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Note: 思路：按照位相加，多余的位数只需要加进位就可以了，如果是最后进位为1，千万不要忘了。 代码： 1.是从末尾开始相加，还要注意进位。 2.返回的是string类型，用arrays的话在leetcode提交不成功。 3.数组的下表是一门技巧。 阅读全文
posted @ 2017-06-05 11:27
牛虻爱吃饭
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Implement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue. pop() -- Removes the element from in front 阅读全文
posted @ 2017-06-01 17:34
牛虻爱吃饭
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Implement the following operations of a stack using queues. push(x) -- Push element x onto stack. pop() -- Removes the element on top of the stack. to 阅读全文
posted @ 2017-06-01 17:28
牛虻爱吃饭
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Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. push(x) -- Push element x onto stack. pop() -- Remov 阅读全文
posted @ 2017-06-01 17:20
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Remove all elements from a linked list of integers that have value val. ExampleGiven: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6Return: 1 --> 2 -- 阅读全文
posted @ 2017-05-18 17:24
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Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: begin to in 阅读全文
posted @ 2017-05-18 11:26
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Given a sorted linked list, delete all duplicates such that each element appear only once. For example,Given 1->1->2, return 1->2.Given 1->1->2->3->3, 阅读全文
posted @ 2017-05-18 09:25
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We are playing the Guess Game. The game is as follows: I pick a number from 1 to n. You have to guess which number I picked. Every time you guess wron 阅读全文
posted @ 2017-05-16 09:32
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You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the quality c 阅读全文
posted @ 2017-05-16 08:57
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Winter is coming! Your first job during the contest is to design a standard heater with fixed warm radius to warm all the houses. Now, you are given p 阅读全文
posted @ 2017-05-16 08:40
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