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我是java的初学者。在我的程序中,我写了一个随机n数组的数组,偶数的索引,奇数元素,反转元素,第一个,最后一个元素的代码。现在我想用独立的方法来实现我的程序。我该怎么办
?我该如何使用方法?
public class Rand {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input = new Scanner (System.in);
System.out.print("Enter the number of values:");
int[] values = new int[input.nextInt()];
Random rand = new Random();
for (int i = 0; i < values.length; i++) {
int n = rand.nextInt(20);
values[i] = n;
}
System.out.print("Array: ");
for (int i = 0; i < values.length; i++) {
System.out.print(" " + values[i]);
}
System.out.println();
System.out.print("Even index: ");
for (int i = 0; i < values.length; i++) {
if (i % 2 == 0) {
System.out.print(" " +values[i]);
}
}
System.out.println();
System.out.print("Odd element:");
for (int i = 0; i < values.length; i++) {
if (values[i] % 2 != 0) {
System.out.print(" " + values[i]);
}
}
System.out.println();
System.out.print("Reverse order:");
for (int i = values.length - 1; i > -1; i--) {
System.out.print(" "+ values[i]);
}
System.out.println();
System.out.print("First, middle and last element:");
System.out.print(" " + values[0]);
if (values.length %2 ==0)
{
System.out.print(" " + values[(values.length /2)-1]);
System.out.print(" " + values[values.length /2]);
}
System.out.print(" " + values[values.length - 1]);
}
}
替换此代码,我想你也应该出台我dea的方法应该为程序员节省时间,否则就是一个非常简洁的答案! – Jerrybibo