Given an array of non-negative integers, you
are initially positioned at the first index of the array.Each element in the
array represents your maximu...
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其他好文 时间:
2014-05-19 08:23:07
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223
Given an array of non-negative integers, you
are initially positioned at the first index of the array.Each element in the
array represents your maximu...
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其他好文 时间:
2014-05-19 08:07:26
阅读次数:
288
题目:合并两个有序单链表思路:一开始想复杂了,以为必须在原链表上修改(绕来绕去还AC了,但是思路相当绕),其实没有,按照正常地合并两个数组同样的方法也对。代码:public
ListNode mergeTwoLists(ListNode l1, ListNode l2) { if(l1 ...
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其他好文 时间:
2014-05-19 07:48:32
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314
Subsequence
Time Limit: 1000MS
Memory Limit: 65536K
Total Submissions: 8128
Accepted: 3141
Description
A sequence of N positive integers (10 < N < 100 000), each of t...
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其他好文 时间:
2014-05-18 15:26:37
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284
4Sum
Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target....
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其他好文 时间:
2014-05-18 13:49:09
阅读次数:
306
【题目】
Divide two integers without using multiplication, division and mod operator.
【题意】
计算两个数的商,不能使用乘、除、取余操作
【思路】
用加法,确定多少除数相加其和恰好<=被除数
为了提高算法效率,利用贪心思想,采用滚雪球式的翻倍叠加策略,使和快速逼近被除数
集中特殊情况需要注意:
1. 结果是负数
...
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其他好文 时间:
2014-05-18 10:42:00
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259
【题目】
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 2->1->4->3.
Your algorithm should use only constant space. You may not modify the values in the list, only nodes it...
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其他好文 时间:
2014-05-18 08:37:57
阅读次数:
370
Problem Description
For a decimal number x with n digits (AnAn-1An-2 ... A2A1), we define its weight as F(x) = An * 2n-1 + An-1 * 2n-2 + ... + A2 * 2 + A1 *
1. Now you are given two numbers A and...
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其他好文 时间:
2014-05-18 06:35:50
阅读次数:
300
Given an unsorted array of integers, find the
length of the longest consecutive elements sequence.For example,Given[100, 4,
200, 1, 3, 2],The longest ...
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其他好文 时间:
2014-05-18 01:52:45
阅读次数:
317
Given two numbers represented as strings,
return multiplication of the numbers as a string.Note: The numbers can be
arbitrarily large and are non-nega...
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其他好文 时间:
2014-05-18 01:25:07
阅读次数:
288