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exhaustive a char dictionary

系統 2000 0

May? 18,2007:

May? 18,2007:

??????? There is a sample of exhaustive a char dictionary.

import ?java.util.regex.Matcher;
import ?java.util.regex.Pattern;
import ?java.util. * ;

public ? class ?Test ... {
????
public ? static ? void ?main(String?args[]) ... {
????????
new ?Test();
????}

????
????String[]?chars?
= ? ... { " a " , " b " , " c " } ;???????? // This?string?array?is?use?to?stored?char?dictionary.
????String?patternStr = ? " [a-z][a-z][a-z] " ;?? // Defined?regularexpression?to?match?traverse/ergod?result
????String?output? = ? "" ;
????Set?set?
= ? new ?TreeSet();??????????????? // Set?store?distinct?record?into?is?reason?for/why?defined?a?tree?set?rather?then?array?list.
????Pattern?pattern? = ?Pattern.compile(patternStr);
????
????
????
public ?Test() ... {
????????
int ?j = ?chars.length;
????????
????????
????????search(
0 ,chars,output);
????????
????????
for (Iterator?it? = ?set.iterator();it.hasNext();) ... {
????????????System.out.println(it.next());
????????}

????}


????
public ? void ?search( int ?i,String[]?chs,String?output) ... {
????????
if (i == chars.length) ... {
????????????Matcher?matcher?
= ?pattern.matcher(output);
????????????
if (matcher.matches()) ... {
????????????????set.add(output);
????????????}

????????????
return ;
????????}

????????
for ( int ?j? = 0 ;?j < chars.length;j ++ ) ... {????????????????? // ergod?the?char?dictionary
????????????output? = ?output + chs[j];
????????????search(i
+ 1 ,chs,output);
????????????output?
= ?output.substring( 0 ,output.length() - 1 );
????????????search(i
+ 1 ,chs,output);
????????}

????}

}
import ?java.util.regex.Matcher;
import ?java.util.regex.Pattern;
import ?java.util. * ;

public ? class ?Test ... {
????
public ? static ? void ?main(String?args[]) ... {
????????
new ?Test();
????}

????
????String[]?chars?
= ? ... { " a " , " b " , " c " } ;???????? // This?string?array?is?use?to?stored?char?dictionary.
????String?patternStr = ? " [a-z][a-z][a-z] " ;?? // Defined?regularexpression?to?match?traverse/ergod?result
????String?output? = ? "" ;
????Set?set?
= ? new ?TreeSet();??????????????? // Set?store?distinct?record?into?is?reason?for/why?defined?a?tree?set?rather?then?array?list.
????Pattern?pattern? = ?Pattern.compile(patternStr);
????
????
????
public ?Test() ... {
????????
int ?j = ?chars.length;
????????
????????
????????search(
0 ,chars,output);
????????
????????
for (Iterator?it? = ?set.iterator();it.hasNext();) ... {
????????????System.out.println(it.next());
????????}

????}


????
public ? void ?search( int ?i,String[]?chs,String?output) ... {
????????
if (i == chars.length) ... {
????????????Matcher?matcher?
= ?pattern.matcher(output);
????????????
if (matcher.matches()) ... {
????????????????set.add(output);
????????????}

????????????
return ;
????????}

????????
for ( int ?j? = 0 ;?j < chars.length;j ++ ) ... {????????????????? // ergod?the?char?dictionary
????????????output? = ?output + chs[j];
????????????search(i
+ 1 ,chs,output);
????????????output?
= ?output.substring( 0 ,output.length() - 1 );
????????????search(i
+ 1 ,chs,output);
????????}

????}

}
?

exhaustive a char dictionary


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