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Problem: Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements. For exa 阅读全文
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Problem: Given two arrays, write a function to compute their intersection. Example: Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], return [2]. Note: Each 阅读全文
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Problem: Invert a binary tree. to One Possible Solution: 阅读全文
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Problem: Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest path from the root node down to the f 阅读全文
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Problem: Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process 阅读全文
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Problem: You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 阅读全文
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Problem: Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". One possible Solut 阅读全文
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1、http://wenku.baidu.com/view/ba2bb84acf84b9d528ea7a31.html?re=view 阅读全文
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贪心的思想：通过每一步都找最优解决问题。因为每一步最优，最后是最优的概率很大。部分背包的思想就是：把最值钱的往包里装，装得越多越好。可见设计算法的人好贪啊，嘿嘿~样例：n种东西，重量是Mi,价值是Vi，单价就是两者之比Pi。C为小包包的容量。最后算出的结果是对应取Xi放到包中。代码如下：#inclu... 阅读全文
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用长分别为100、200、300、400、500、600、700、800、900、1000的10个数组的排列来统计这两种算法的时间复杂性；快速排序程序：#includeusing namespace std;int circle;static int num[11]={0,0,0,0,0,0,0,0... 阅读全文