Question

java，哪位大神能帮忙在下面的代码里加一段，能把输出的20个数输从小到大排序，谢谢

import java.lang.*;
// import java.util.Random;

class UniqueRandomIntArray {

// static Random rnGen = new Random();

private static void uriArray(int[] rray) {
int low = 0;
int high = 99;

int rn;
int haveit = 0;
int i = 0;
int j;

while((haveit == 0) && i < rray.length) {
rn = randNum(low, high);

for(j = 0; j <= i; j++) {
if(rn == rray[j]) {
haveit = j;
j = i;
}
}

if(haveit != 0) {
System.out.println("a[" + haveit + "] is " + rn + " already");
haveit = 0;
}
else {
System.out.println("a[" + i + "] is " + rn);
rray[i] = rn;
i++;
}

} // end while
} // end uriArray

private static int randNum(int min, int max) {
int range = (max - min) + 1;
// int randnum = rnGen.nextInt(range) + min;
int randnum = (int) (Math.random() * range) + min;
return randnum;
}

public static void main(String[] args) {
int[] arra = new int[20];
uriArray(arra);
for(int i=0; i<arra.length; i++) {
System.out.print(" | " + arra[i]);
}
System.out.println(" | ");
}

} //class ends

Answer 1

import java.util.Arrays;//加上头文件
public static void main(String[] args) {
		int[] arra = new int[20];
		uriArray(arra);
		Arrays.sort(arra); //添加这一行
		for (int i = 0; i < arra.length; i++) {
			System.out.print(" | " + arra[i]);
		}
		System.out.println(" | ");
	}

望采纳哦~~

输出：

a[0] is 12

a[1] is 9

a[2] is 88

a[3] is 20

a[4] is 94

a[1] is 9 already

a[5] is 86

a[6] is 30

a[7] is 62

a[8] is 51

a[9] is 36

a[10] is 32

a[11] is 92

a[8] is 51 already

a[12] is 31

a[13] is 19

a[14] is 60

a[15] is 33

a[16] is 39

a[17] is 46

a[18] is 42

a[19] is 45

 | 9 | 12 | 19 | 20 | 30 | 31 | 32 | 33 | 36 | 39 | 42 | 45 | 46 | 51 | 60 | 62 | 86 | 88 | 92 | 94 | 

Answer 2

uriArray(arra);下面添加一句
Arrays.sort(arra);