import?java.util.Arrays;
import?java.util.Random;

public?class?MookQue?{
????public?static?void?main(String[]?args)?{
????????int[]?arr?=?getAry(8);
????????getAverage(arr);?
????????printArr(removeMin(arr));
????}
????
????private?static?int[]?getAry(int?length)
????{
????????int[]?arr?=?new?int[length];
????????
????????for(int?i=0;?i<length;?i++)?{
????????????int?number?=?new?Random().nextInt(20)?+?1;
????????????
????????????while(number%2?!=?0)
????????????{
????????????????number?=?new?Random().nextInt(20)?+?1;
????????????}
????????????
????????????arr[i]?=?number;
????????}
????????
????????return?arr;?????
????}
????
????private?static?void?getAverage(int[]?arr)
????{
????????double?sum?=?0;
????????
????????for?(int?i?:?arr)?{
????????????sum?+=?i;
????????}?
????????
????????System.out.println(sum/arr.length);?????
????}
????
????private?static?void?printArr(int[]?arr)
????{??
????????for?(int?i?:?arr)?{
????????????System.out.print(i?+?"?");
????????}?
????}
????
????private?static?int[]?removeMin(int[]?arr)
????{
????????Arrays.sort(arr);
????????arr[0]?=?arr[arr.length-1];
????????return?Arrays.copyOf(arr,?arr.length-1);
????}
}

兄弟 ，多動動手才會有進步

很簡單啊，兄弟，自己練習練習。