利用嵌套for循环形成一个新列表 [i*j for i in range(3) for j in range(3)]相当于如下代码 li=[] for i in range(3): for j in range(3): print(i*j) li.append(i*j) print(li) 结果和[i*j for i in range(3) for j in range(3)]的结果一样都是: [0, 0, 0, 0, 1, 2, 0, 2, 4] 以上就是利用嵌套for循环形成一个新列表是怎么…
package com.test.forname; public class TestForName { public static void main(String[] args) throws Exception{ /* A a = (A) Class.forName("com.test.a.A").newInstance(); Class<?> c = Class.forName("com.test.c.C"); System.out.printl…
J - Java Beans There are N little kids sitting in a circle, each of them are carrying some java beans in their hand. Their teacher want to select M kids who seated in M consecutive seats and collect java beans from them. The teacher knows the number…
Implement strStr() Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. 最简单的思路,逐一比较: class Solution { public: int strStr(char *haystack, char *needle) { int n1=strlen(haystack);…
Problem E Time Limit : 6000/3000ms (Java/Other) Memory Limit : 32768/32768K (Java/Other) Total Submission(s) : 16 Accepted Submission(s) : 9 Font: Times New Roman | Verdana | Georgia Font Size: ← → Problem Description When Teddy was a child , he…
目录: B - Fraction D - Triangle F - Harmonic Value Description H - Sequence I I - Sequence II B题:HDU 5912 - Fraction - [递归] 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5912 Problem DescriptionMr. Frog recently studied how to add two fractions up, an…
创建结点类,链表类,测试类 import java.lang.Object; //结点node=数据date+指针pointer public class Node { Object iprop; public Object getIprop(int i){ switch(i){ case 1:iprop=num;break; case 2:iprop=name;break; case 3:iprop=score;break; } return iprop; } //数据data Object…
题目描述: Description This task is very simple. Given a string S of length n and q queries each query is on the format i j k which means sort the substring consisting of the characters from i to j in non-decreasing order if k = 1 or in non-increasing ord…
J - Nightmare Ignatius had a nightmare last night. He found himself in a labyrinth with a time bomb on him. The labyrinth has an exit, Ignatius should get out of the labyrinth before the bomb explodes. The initial exploding time of the bomb is set to…
本文以一个简单的程序开头--数组赋值: int LEN = 10000;int[][] arr = new int[LEN][LEN]; for (int i = 0; i < LEN; i++) { for (int j = 0; j < LEN; j++) { arr[i][j] = 1; }}示例中虽然采用了Java,但是熟悉其他编程语言的同学可以自行脑补成自己熟悉的语言,如C/C++.Go.Python之类的,这里的知识点不限制在语言层级. 我们在使用这种for循环的时候,是否会习惯性…
A Bit Fun Time Limit: 5000/2500 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1148 Accepted Submission(s): 644 Problem Description There are n numbers in a array, as a0, a1 ... , an-1, and another number m. We d…
题目传送门 题意:从n个数中选出不同的三个数a b c,使得(a+b)^c 最大 分析:先将所有数字按位插入到字典树上,然后删除两个数字,贪心询问与剩下的数字最大异或值. /************************************************ * Author :Running_Time * Created Time :2015/11/1 14:58:49 * File Name :J.cpp *************************************…