解析: 首先是读取字节: /** * 读取输入流中指定字节的长度 * <p/> * 输入流 * * @param length 指定长度 * @return 指定长度的字节数组 */ public static byte[] readBytesFromTo(byte[] buffer, int from, int length) { byte[] sub = new byte[length]; int cur = 0; for (int i = from; i < length + fr…
十进制是已知的数值 第一种方法: <script type="text/javascript"> var num=2148140545; var str=num.toString("2");//转为二进制 var str1=parseInt(str.substring(0,8),2); /*parseInt函数用于解析一个字符串,并返回一个整数 substring() 方法用于提取字符串中介于两个指定下标之间的字符. stringObject.subst…
var Stack = (function(){ var items = new WeakMap(); //先入后出,后入先出 class Stack{ constructor(){ items.set(this,[]); } push(ele){ //入栈 var ls = items.get(this); ls.push(ele); } pop(){ //出栈 var ls = items.get(this); return ls.pop(); } size(){ //获取栈的长度 var…
Count Color Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 34950 Accepted: 10542 Description Chosen Problem Solving and Program design as an optional course, you are required to solve all kinds of problems. Here, we get a new problem.…
Description Fractions in octal (base 8) notation can be expressed exactly in decimal notation. For example, 0.75 in octal is 0.953125 (7/8 + 5/64) in decimal. All octal numbers of n digits to the right of the octal point can be expressed in no more t…
题目链接 [洛谷传送门] 题解 按位处理. 把每一位对应的图都处理出来 然后单调栈处理一下就好了. \(and\)操作处理全\(1\). \(or\)操作处理全\(0\). 代码 #include <bits/stdc++.h> #define gc getchar using namespace std; typedef long long ll; const int N = 1000 + 4; const int P = 1e9 + 7; const int BIT = 31; int n…