import java.util.Scanner; public class Test_4_3 { public static void main(String[] args) { int[] a = new int[10]; int Index =0; Scanner sc = new Scanner(System.in); for(int i = 0;i < a.length;i ++){ a[i] = sc.nextInt(); } while(true){ System.out.println("请输入需要查找的数:"); int m = sc.nextInt(); for(int i = 0;i < a.length;i ++){ if(m == a[i]){ Index = i; System.out.println("该数字下标为:"+Index); return; } } System.out.println("没有您需要查找的数字"); } } }