public class Test24 { public static void main(String[] args) { // 鸡蛋0.1元一个,鸭蛋3元一个,鹅蛋6元一个.求一百元买一百个蛋. for (int i = 1; i <= 1000; i++) { for (int j = 1; j <= 100 / 3; j++) { for (int k = 1; k <= 100 / 6; k+
题目: 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 example, given nums = [0, 1, 0, 3, 12], after calling your function, nums should be [1, 3, 12, 0, 0]. Note:
题目:矩阵置0 难度:Easy 题目内容: Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in-place. 翻译: 给定一个m x n矩阵,如果一个元素是0,就把它的整行和列设为0. 要求:就地置0. Example 1: Input: [ [1,1,1], [1,0,1], [1,1,1] ] Output: [ [1,0,1], [0,0,0],
简单入门一下矩阵树Matrix-Tree定理.(本篇目不涉及矩阵树相关证明) 一些定义与定理 对于一个无向图 G ,它的生成树个数等于其基尔霍夫Kirchhoff矩阵任何一个N-1阶主子式的行列式的绝对值. 所谓的N-1阶主子式就是对于一个任意的一个 r ,将矩阵的第 r 行和第 r 列同时删去得到的新矩阵. 基尔霍夫Kirchhoff矩阵的一种求法: 基尔霍夫Kirchhoff矩阵 K =度数矩阵 D - 邻接矩阵 A 基尔霍夫Kirchhoff矩阵的具体构造 度数矩阵D:是一个 ${N}\t
EXTENDED LIGHTS OUT Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 9612 Accepted: 6246 Description In an extended version of the game Lights Out, is a puzzle with 5 rows of 6 buttons each (the actual puzzle has 5 rows of 5 buttons eac