其他-周排行
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此题就是快速幂取模 先简单讲一讲快速幂 首先,快速幂的目的就是做到快速求幂,假设我们要求a^b,按照朴素算法就是把a连乘b次,这样一来时间复杂度是O(b)也即是O(n)级别,快速幂能做到O(logn),快了好多好多。它的原理如下: 假设我们要求a^b,那么其实b是可以拆成二进制的,该二进制数第i位的 ...
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题目: 题意:给定序列,求[l,r]区间内数字相同的数的最远距离。 链接:https://www.codechef.com/problems/QCHEF #include<bits/stdc++.h> #define LL long long #define ULL unsigned long lo ...
public static String toString(Object[] a) { if (a == null) return "null"; int iMax = a.length - 1; if (iMax == -1) return "[]"; StringBuilder b = new ... ...
1. Class 绑定 1.1 对象语法 普通对象 单个类 <div v-bind:class="{ active: isActive }"></div> 普通对象 多个类 <div class="static" v-bind:class="{ active: isActive, 'text-dan ...
input标签当type为number时,只能输入数字 其中有max和min属性,是限制输入数字的大小,当想输入小数时,可以把步数step改为小数,如step = 0.1 如: <input type = "number" value = "10" max = "20" min = "10" ste ...
原文转自:http://www.ruanyifeng.com/blog/2018/07/cap.html 一、分布式系统的三个指标 1998年,加州大学的计算机科学家 Eric Brewer 提出,分布式系统有三个指标。 Consistency Availability Partition tole ...
一、let和var的区别 1、作用域只局限于当前模块 let声明变量var是全局作用域变量,在代码块中和代码块外面都有效果 2、使用let声明的变量作用域不会被提升 { let str1='var1'; var str2= 'var2'; } console.log(str2);//undefine ...
vim /path/to/path/conf/nginx.conf ..... events{ ...... 省略..... } http { ..... server{ listen 443 ssl; server_name domain_name.com; ssl on; ssl_certifi ...