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全部文章（共135篇）

PAT(动态规划)——1040. Longest Symmetric String (25)-PAT甲级真题（动态规划）

Given a string, you are supposed to output the length of the longest symmetric sub-string. For example, given “Is PAT&TAP symmetric?”, the longest...

2019-01-31

0 436

PAT(散列)——1084. Broken Keyboard (20)

On a broken keyboard, some of the keys are worn out. So when you type some sentences, the characters corresponding to those keys will not appear on sc...

PAT

2019-01-30

0 474

PAT(散列)——1092. To Buy or Not to Buy (20)-PAT甲级真题

Eva would like to make a string of beads with her favorite colors so she went to a small shop to buy some beads. There were many colorful strings of b...

2019-01-30

0 437

PAT(散列)——1050. String Subtraction (20)

Given two strings S1 and S2, S = S1 – S2 is defined to be the remaining string after taking all the characters in S2 from S1. Your task is simply to c...

PAT

2019-01-30

0 410

PAT(散列)——1048 Find Coins （25 分）

Eva loves to collect coins from all over the universe, including some other planets like Mars. One day she visited a universal shopping mall which cou...

PAT

2019-01-30

0 374

PAT(dfs)——1103. Integer Factorization (30)

The K-P factorization of a positive integer N is to write N as the sum of the P-th power of K positive integers. You are supposed to write a program t...

2019-01-30

0 647

PAT(图)——1076. Forwards on Weibo (30)

Weibo is known as the Chinese version of Twitter. One user on Weibo may have many followers, and may follow many other users as well. Hence a social n...

PAT

2019-01-29

0 445

PAT(图)——1072 Gas Station （30 分）

1072 Gas Station （30 分） A gas station has to be built at such a location that the minimum distance between the station and any of the residential hous...

PAT

2019-01-29

0 804

【操作系统】——虚拟存储

需求背景计算机系统经常出现内存不够用 1. 覆盖技术说明依照程序逻辑结构，将程序划分为若干功能相对独立的模块，将不会同时执行的模块共享同一块内存区域。（必要部分常驻内存、可选部分只在需要时装入内存）评价开发难度增加增加执行时间 2. 交换技术说明将暂时...

2019-01-26

0 462

【操作系统】——物理内存管理

物理内存管理 1 连续内存分配 1.1 固定分区分配说明在系统初始化阶段，内存被划分为许多静态分区，进程可以被装入大于或等于自身的分区中。评价操作简单，但缺乏灵活性，会产生大量内部碎片，并且当程序太大时，一个分区不足以装入。 1.2 动态分区分配说明为把一个进程装入内存...

2019-01-25

0 471