Arrangement and combination

5 and 1 cannot be in the middle, and 1 must be in the first.
Public class zuhe {

Public static void main (string [] ARGs ){
String S = "12345 ";
Char [] C = S. tochararray ();
New zuhe (). zuhe (C, C. length, 0 );
System. Out. println ("test:" + KK );
}
Static int KK = 0;
Private void zuhe (char [] array, int N, int K ){
If (n = k ){
If (array [2]! = '5' & array [2]! = '1' & array [0] = '1 '){
String STR = new string (array );
System. Out. println (STR );
++ KK;
}
} Else {
For (INT I = K; I <n; I ++ ){
Swap (array, K, I );
Zuhe (array, n, k + 1 );
Swap (array, I, K );
}
}
}

Private void swap (char [] A, int X, int y ){
Char temp = A [x];
A [x] = A [y];
A [y] = temp;
}
}

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Import java. Io. bufferedreader;
Import java. Io. ioexception;
Import java. Io. inputstreamreader;

Public class weave {
Private bufferedreader in;
Private inputstreamreader is;
Private char [] chars;
Private int charlen;
Int min;
Int Max;
Int COUNT = 0;

Public weave (){
Open ();
String STR = getstrinput ("Enter the characters to be combined :");
Chars = Str. tochararray ();
Charlen = chars. length;
Min = getintinput ("Enter the minimum length of the combination :");
Max = getintinput ("Enter the maximum length of the combination :");
Close ();
}

Public static void main (string [] ARGs ){

Weave weave = new weave ();
Long begin = system. currenttimemillis ();
Weave. Combination ();
Weave. Loger ("execution time:" + (system. currenttimemillis ()-begin) + "millisecond ");
}

Public void combination (){
Count = 0;
If (min> MAX ){
Int T = max;
Max = min;
Min = T;
}
For (INT I = min; I <= max; I ++ ){
Combination (New stringbuffer (""), I );
}
}

Public void combination (stringbuffer STR, int length ){

If (length <1 ){
Loger ("length less than 1 ");
}

If (length = 1 ){
For (INT I = 0; I <charlen; I ++ ){
Stringbuffer result = new stringbuffer (STR );
Result. append (chars [I]);
// Perform some operations based on the combined results
Dosome (result );
}
}

If (length> 1 ){
For (INT I = 0; I <charlen; I ++ ){
Stringbuffer temp = new stringbuffer (STR );
Combination (temp. append (chars [I]), length-1 );
}
}
}

Public void dosome (stringbuffer Str ){
Count ++;
Loger (count + "." + Str );
}

Public int getintinput (string info ){
Int temp = 0;
Loger ("/N" + info );
Try {
Temp = integer. parseint (in. Readline ());
}
Catch (exception e ){
Loger ("error !! Enter ") again ");
Return getintinput (Info );
}
If (temp <= 0 ){
Loger ("/n Error !! Must be greater than 0! ");
Return getintinput ("new input :");
}

Return temp;
}

Public String getstrinput (string info ){
Loger ("/N" + info );
String temp = "";
Try {
Temp = in. Readline ();
} Catch (ioexception e ){
Loger (E );
}
If (null = temp | "". Equals (temp )){
Loger ("/n Error !! You cannot enter an empty string! ");
Return getstrinput ("new input :");
}
Return temp;
}

/**
108. * Feedback
109. * @ Param o
110 .*/
Public void Loger (Object O ){
System. Out. println (O. tostring ());
}

Public void close (){
Try {
Is. Close ();
In. Close ();
} Catch (ioexception e ){
Loger (E );
}

}

Public void open (){
Is = new inputstreamreader (system. In );
In = new bufferedreader (is );
}

}