public class Permutation 
{
static int n; static int[] a;
static boolean ifok(int k, int i) { if (k < i) { for (int t = k; t < i; t++) { if (a[t] == a[i]) return false;
} } return true; } static void search(int k) { if (k == n) { for (int i : a) { System.out.print(i + "銆"); } System.out.println(); return; } for (int i = k; i < n; i++) { if (ifok(k, i)) { int tmp = a[k]; a[k] = a[i]; a[i] = tmp; search(k + 1); tmp = a[k]; a[k] = a[i]; a[i] = tmp; } } } public static void main(String[] args) { int a1[] = { 1, 1, 2, 2 }; n = a1.length; a = a1; Arrays.sort(a); search(0); }
}
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public static void main(String[] arg) throws IOException { FileWriter q = new FileWriter( new File("c:\\1.txt")); BufferedWriter k=new BufferedWriter(q); k.write("asdsad"); k.close(); }]]>
class data implements Comparable { int a; int b;@Override public int compareTo(Object o) { return a - ((data) o).a; } public String toString(){ return Integer.toString(this.a)+"::"+Integer.toString(this.b); }}public class test { public static void main(String[] args) { data[] temp = new data[10]; PriorityQueue<data> q=new PriorityQueue<data>(); for (int i = 0, j = 10; i < 10; i++, j--) { temp[i] = new data(); temp[i].a = j; temp[i].b = i; q.add(temp[i]); } //Arrays.sort(temp); while(q.peek()!=null){ System.out.println(q.remove()+" ");} }}
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String a="1,2|3 4,5:6,7,8";2
StringTokenizer test=new StringTokenizer(a," ,:|");3
while(test.hasMoreTokens()){4
System.out.print(test.nextToken());5
}
]]>
1//鏂規硶浜?==================================
2class data implements Comparable {
3 int a;
4 int b;
5
6 @Override
7 public int compareTo(Object o) {
8 return a - ((data) o).a;
9 }
10 public String toString(){
11 return Integer.toString(this.a)+","+Integer.toString(this.b);
12 }
13}
14public class test {
15 public static void main(String[] args) {
16 data[] temp = new data[10];
17 for (int i = 0, j = 10; i < 10; i++, j--) {
18 temp[i] = new data();
19 temp[i].a = j;
20 temp[i].b = i;
21 }
22 Arrays.sort(temp);
23 System.out.println(Arrays.asList(temp));
24 }
25}
//鏂規硶浜?==================================2
class data implements Comparable {3
int a;4
int b;5
6
@Override7
public int compareTo(Object o) {8
return a - ((data) o).a;9
}10
public String toString(){11
return Integer.toString(this.a)+","+Integer.toString(this.b);12
}13
}14
public class test {15
public static void main(String[] args) {16
data[] temp = new data[10];17
for (int i = 0, j = 10; i < 10; i++, j--) {18
temp[i] = new data();19
temp[i].a = j;20
temp[i].b = i;21
}22
Arrays.sort(temp);23
System.out.println(Arrays.asList(temp));24
}25
}
1import java.math.*;
2import java.util.*;
3import java.io.*;
4//鏂規硶涓===============================================================
5class data {
6 public int i;
7 public int j;
8
9}
10
11class cmp implements Comparator {
12 @Override
13 public int compare(Object o1, Object o2) {
14 return ((data) o1).i - ((data) o2).i;//浠庡皬鍒板ぇ
15 // return 0;
16 }
17}
18
19public class test {
20
21 public static void main(String[] arg) {
22
23 data[] a = new data[10];
24
25 for(int i=0,j=10;i<10;i++,j--){
26 a[i]=new data();//姣忔蹇呴』鍒濆鍖?br>27 a[i].i=i;
28 a[i].j=j;
29 }
30
31 Arrays.sort(a,new cmp());
32
33 for(int i=0;i<10;i++){
34 System.out.print(a[i].i+" ");
35 }
36
37 }
38}
39
import java.math.*;2
import java.util.*;3
import java.io.*;4
//鏂規硶涓===============================================================5
class data {6
public int i;7
public int j;8
9
}10
11
class cmp implements Comparator {12
@Override13
public int compare(Object o1, Object o2) {14
return ((data) o1).i - ((data) o2).i;//浠庡皬鍒板ぇ15
// return 0;16
}17
}18
19
public class test {20
21
public static void main(String[] arg) {22
23
data[] a = new data[10];24
25
for(int i=0,j=10;i<10;i++,j--){26
a[i]=new data();//姣忔蹇呴』鍒濆鍖?br>27 a[i].i=i;28
a[i].j=j;29
}30
31
Arrays.sort(a,new cmp());32
33
for(int i=0;i<10;i++){34
System.out.print(a[i].i+" ");35
}36
37
}38
}39
]]>
public static void main(String[] arg) throws IOException {2
FileReader q = new FileReader(3
"G:\\project\\java\\topcoder\\test\\src\\test.java");4
BufferedReader k = new BufferedReader(q);5
String s;6
while ((s = k.readLine()) != null) {7
System.out.println(s);8
}9
}
]]>