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#27 Remove Element
题目链接:https://leetcode.com/problems/remove-element/ Given an array and a value, remove all instances of that value in place and return the new length. The order of elements can be changed. ...
分类:其他好文   时间:2015-07-19 18:03:33    阅读次数:92
leetcode | sqrt(x)
sqrt(x) : https://leetcode.com/problems/sqrtx/Implement int sqrt(int x). Compute and return the square root of x.解析: 容易想到的是用二分法去试,但收敛速度太慢,不能满足时间要求。 我们知道求根公式,牛顿迭代法 点击查看维基百科 首先,选择一个接近函数f(x)零点的x_0,计...
分类:其他好文   时间:2015-07-19 10:22:55    阅读次数:166
leetcode | Intersection of Two Linked Lists
Intersection of Two Linked Lists : https://leetcode.com/problems/intersection-of-two-linked-lists/Write a program to find the node at which the intersection of two singly linked lists begins.For exampl...
分类:其他好文   时间:2015-07-19 10:22:22    阅读次数:140
leetcode | Power of Two
Power of Two : https://leetcode.com/problems/power-of-two/ Given an integer, write a function to determine if it is a power of two.判断一个数是否是2的幂? 当无从下手时,可以根据例子找出规律。对于1,2,4,8,16它们的二进制表示分别是: 1: (1) 2:...
分类:其他好文   时间:2015-07-19 10:22:13    阅读次数:210
#24 Swap Nodes in Pairs
题目链接:https://leetcode.com/problems/swap-nodes-in-pairs Given a linked list, swap every two adjacent nodes and return its head. For example, Given 1->2->3->4, you should return the list as...
分类:其他好文   时间:2015-07-19 10:15:56    阅读次数:93
#23 Merge k Sorted Lists
题目链接:https://leetcode.com/problems/merge-k-sorted-lists/ Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. /** * Definition for singly-l...
分类:其他好文   时间:2015-07-19 10:12:41    阅读次数:114
Combination Sum
https://leetcode.com/problems/combination-sum/ 1 class Solution { 2 public: 3 void getResult(vector>& res,vector& path,int target,int index,int su...
分类:其他好文   时间:2015-07-18 19:50:42    阅读次数:102
leetcode | Pow(x, n)
Pow(x, n) : https://leetcode.com/problems/powx-n/Implement pow(x, n).解析: 同剑指offer: 数值的整数次方 | Power本题考查的关键点有: double 不能使用“==” 0 不能取负数次幂 任何数的 0 次幂为 1 1的任何次幂为1 -1的偶数次幂为1,奇数次幂为-1 如何快速的计算一个数的整数次幂 注意: 关于基数...
分类:其他好文   时间:2015-07-18 18:40:55    阅读次数:126
Divide Two Integers
https://leetcode.com/problems/divide-two-integers/需要注意的,int类型的数据,正数最大和负数最小可以表示到:2147483647-2147483648正数最大的二进制码为:011111111......1111,负数最小的二进制码为:1000000...
分类:其他好文   时间:2015-07-18 18:31:53    阅读次数:141
leetcode | Reverse Nodes in k-Group
Reverse Nodes in k-Group : https://leetcode.com/problems/reverse-nodes-in-k-group/Given a linked list, reverse the nodes of a linked list k at a time and return its modified list.If the number of nodes...
分类:其他好文   时间:2015-07-18 17:04:26    阅读次数:100
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