我是一个java初学者，写了份作业但有两处错误找不出来，请哪位高手指教指教。

Question

public class evaluation
{
public static int[] array1(int n)
{
int array[]=new int[n];
for(int i=0;i<=array.length;i++)
array[i]=(int)(math.random()*100);
return array;
}
public static void getarray(array[])
{
for(i=0;i<array.length;i++)
System.out.println("the muster of random data is:"+array[i]);
}
public static int max(array[])
{
int maxvalue=array[0];
for(int i=1;i<array.length;i++)
if(array[i]>maxvalue)
maxvalue=table[i];
return maxvalue;
}
public static int min(array[])
{
int minvalue=array[0];
for(int i=1;i<array.length;i++)
if(array[i]>minvalue)
minvalue=table[i];
return minvalue;
}
public int ave(int array[])
{ int sum = 0;
for (int i=0; i<array.length; i++)
{sum+=array[i];}
return sum/(array.length);
}

public static void main(String[] args)
{
evaluation b=new evaluation();
int array[]=random(20);
System.out.println("the 20 data is:");
print(array);
System.out.println("the Max data="+a.max(array));
System.out.println("the Min data="+ evaluation.min(array));
System.out.println("the averages is:"+a.avg(array));
}
}

D:\My Documents\JCreator Pro\MyProjects\evaluation\src\evaluation.java:12: <identifier> expected
public static void getarray(array[])
^
D:\My Documents\JCreator Pro\MyProjects\evaluation\src\evaluation.java:50: ')' expected
}
^
2 errors

Answer 1

哥们，我在你的基础上修改了下，完整代码如下：
import java.util.Random;

public class evaluation {
public static int[] array1(int n) {
int array[] = new int[n];
for (int i = 0; i <= array.length; i++)
array[i] = (int) (Math.random() * 100);
return array;
}

public static void getarray(int array[]) {
for (int i = 0; i < array.length; i++)
System.out.println("the muster of random data is:" + array[i]);
}

public static int max(int array[]) {
int maxvalue = array[0];

for (int i = 1; i < array.length; i++)
if (array[i] > maxvalue)
maxvalue = array[i];

return maxvalue;
}

public static int min(int array[]) {
int minvalue = array[0];
for (int i = 1; i < array.length; i++)
if (array[i] < minvalue)
minvalue = array[i];

return minvalue;
}

public int avg(int array[]) {
int sum = 0;
for (int i = 0; i < array.length; i++) {
sum += array[i];
}
return sum / (array.length);
}

public static void main(String[] args) {
evaluation b = new evaluation();
int array[] = random(20);
System.out.println("the 20 data is:");
print(array);
System.out.println("the Max data=" + b.max(array));
System.out.println("the Min data=" + b.min(array));
System.out.println("the averages is:" + b.avg(array));
}

private static void print(int[] array) {
for (int i = 0; i < array.length; i++) {
System.out.print(array[i] + ", ");
}

System.out.println();

}

private static int[] random(int num) {
int[] ary = new int[num];
Random rand = new Random();
for (int i = 1; i <= num; i++) {
　ary[i - 1] = rand.nextInt(100);//控制随机数字在100之内，好看点
}

return ary;
}
}

－－－－－－－－测试结果
the 20 data is:
25, 54, 83, 78, 98, 61, 92, 63, 26, 41, 38, 78, 85, 53, 24, 87, 99, 67, 88, 5,
the Max data=99
the Min data=5
the averages is:62

Answer 2

方法定义都没定义形参中的类型， 比如
public static void getarray(array[])
{
for(i=0;i<array.length;i++)
System.out.println("the muster of random data is:"+array[i]);
}

如果array[]是个整形数组，就将其改为 public static void getarray(int array[]) 之后还有很多类似的问题。
另外math如果是想引用math类的话，要改为Math，及Math.random()，
建议楼主使用eclipse或myeclipse工具 这样很多初级的问题都能自己帮你找出来，方便学习。

Answer 3

public class evaluation
{
public static int[] array1(int n)
{
int array[]=new int[n];
for(int i=0;i<=array.length;i++)
array[i]=(int)(math.random()*100);
return array;
}
public static void getarray(int array[])
{
for(int i=0;i<array.length;i++)
System.out.println("the muster of random data is:"+array[i]);
}
public static int max(int array[])
{
int table[]=new int[array.length];
int maxvalue=array[0];
for(int i=1;i<array.length;i++)
if(array[i]>maxvalue)
maxvalue=table[i];
return maxvalue;
}
public static int min(int array[])
{
int table[]=new int[array.length];
int minvalue=array[0];
for(int i=1;i<array.length;i++)
if(array[i]>minvalue)
minvalue=table[i];
return minvalue;
}
public int ave(int array[])
{ int sum = 0;
for (int i=0; i<array.length; i++)
{sum+=array[i];}
return sum/(array.length);
}

public static void main(String[] args)
{
evaluation b=new evaluation();
int array[]=random(20);
System.out.println("the 20 data is:");
System.out.print(array);
System.out.println("the Max data="+a.max(array));
System.out.println("the Min data="+ evaluation.min(array));
System.out.println("the averages is:"+a.avg(array));
}
}

Answer 4

package com;
public class evaluation //方法名称不规范，首字母最后大写Evaluation
{
public static int[] array1(int n)
{
int array[]=new int[n];
for(int i=0;i<=array.length;i++)
array[i]=(int)(Math.random()*100);//这里math要大写
return array;
}
public static void getarray(int array[])//数值没有声明类型
{
for(int i=0;i<array.length;i++)//i没有声明改为int i
System.out.println("the muster of random data is:"+array[i]);
}
public static int max(int array[])
{
int maxvalue=array[0];
for(int i=1;i<array.length;i++)
if(array[i]>maxvalue)
maxvalue=table[i];//不知道你这个table是什么？
return maxvalue;
}
public static int min(int array[])
{
int minvalue=array[0];
for(int i=1;i<array.length;i++)
if(array[i]>minvalue)
minvalue=table[i];
return minvalue;
}
public int ave(int array[])
{ int sum = 0;
for (int i=0; i<array.length; i++)
{sum+=array[i];}
return sum/(array.length);
}

public static void main(String[] args)
{
evaluation b=new evaluation();
int array[]=random(20);//什么意思？
System.out.println("the 20 data is:");
print(array);//这是要打印吗？
System.out.println("the Max data="+b.max(array));//调用要用对象名b
System.out.println("the Min data="+ evaluation.min(array));
System.out.println("the averages is:"+b.ave(array));//方法名称写错。。。
}
}
不止两处。。。

Answer 5

import java.util.*;
public class evaluation
{
public static int[] array1(int n)
{
int array[]=new int[n];
for(int i=0;i<array.length;i++)
array[i]=(int)(Math.random()*100);
return array;
}
public static void getarray(int[] array)
{
for(int i=0;i<array.length;i++)
System.out.println("the muster of random data is:"+array[i]);
}
public static int max(int[] array)
{
int maxvalue=array[0];
for(int i=1;i<array.length;i++)
if(array[i]>maxvalue)
maxvalue=array[i];
return maxvalue;
}
public static int min(int [] array)
{
int minvalue=array[0];
for(int i=1;i<array.length;i++)
if(array[i]<minvalue)
minvalue=array[i];
return minvalue;
}
public static int ave(int array[])
{ int sum = 0;
for (int i=0; i<array.length; i++)
{sum+=array[i];}
return sum/(array.length);
}

public static void main(String[] args)
{
evaluation b=new evaluation();
int array[]=b.array1(20);
System.out.println("the 20 data is:");
for(int i=0;i<array.length;i++)
System.out.println(array[i]);
System.out.println("the Max data="+max(array));
System.out.println("the Min data="+min(array));
System.out.println("the averages is:"+ave(array));
}
}
好了，细节问题可以追问

Answer 6

public static void getarray(array[]) 没有类型；
很多变量都没类型