"Huawei OJ" "048-parameter Resolution"

"Huawei OJ" "Algorithm Total chapter" "Huawei OJ" "048-parameter Resolution" "Project Download" topic description

在命令行输入如下命令： xcopy /s c:\ d:\， 各个参数如下：参数1：命令字xcopy参数2：字符串/s参数3：字符串c:参数4: 字符串d:请编写一个参数解析程序，实现将命令行各个参数解析出来。解析规则：1.参数分隔符为空格2.对于用“”包含起来的参数，如果中间有空格，不能解析为多个参数。  比如在命令行输入xcopy /s “C:\program files” “d:\”时，参数仍然是4个，  第3个参数应该是字符串C:\program files，而不是C:\program，注意输出参数时，需要将“”去掉，引号不存在嵌套情况。3.参数不定长4.输入由用例保证，不会出现不符合要求的输入

Enter a description

输入一行字符串，可以有空格

Output description

输出参数个数，分解后的参数，每个参数都独占一行

Input example

xcopy /s c:\\\ d:\\

Output example

4xcopy/sc:\\d:\\

Algorithm implementation

ImportJava.util.ArrayList;ImportJava.util.List;ImportJava.util.Scanner;/** * Author: Wang Junshu * date:2015-12-25 08:31 * declaration:all rights Reserved!!! */ Public  class Main {     Public Static void Main(string[] args) {Scanner Scanner =NewScanner (system.in);//Scanner Scanner = new Scanner (Main.class.getClassLoader (). getResourceAsStream ("Data.txt"));         while(Scanner.hasnext ())            {String input = Scanner.nextline ();        SYSTEM.OUT.PRINTLN (arganalysis (input));    } scanner.close (); }/** * Analysis parameters, "there is another way, is directly using the array to deal with, can reduce the complexity of time and space complexity, processing will be troublesome" * @param S * @return */
         Private StaticStringarganalysis(String s) {List<string> List =NewArraylist<> ();//Indicates the last "occurrence of the next position, if not" is 0        intPrev =0; for(inti =0; I < s.length (); ) {first double quote starting with//I            if(S.charat (i) = =' "') {//Add a string that does not wrap double quotesList.add (s.substring (prev, i)); for(intj = i +1; J < S.length (); J + +) {//Start with a second double quote                    if(S.charat (j) = =' "') {List.add (S.substring (i, J +1)); i = j +1;                    prev = i; }                }            }Else{i++; }        }//"1"//// indicates no "//if (prev = = 0) {//List.add (s);//        }//// and last one no/Else if (prev < s.length ()) {//List.add (s.substring (prev, s.length ()));//        }        //"2", "1" "2" to achieve the same effect        if(Prev < s.length ())        {List.add (s.substring (prev, s.length ())); }//Handle spaces below, double quotation marks cause string not to be processed        intresult =0; StringBuilder Builder =NewStringBuilder (); for(String t:list) {//If you do not start with the            if(!t.startswith ("\"") {string[] sts = T.split ("\\s+"); result + = Sts.length; for(String st:sts) {Builder.append (ST). Append (' \ n '); }            }Else{result++; Builder.append (t). Append (' \ n '); }        }returnResult +"\ n"+ builder.substring (0, Builder.length ()-1); }}

"Huawei OJ" "048-parameter Resolution"