package com.limuzi01;import java.util.Scanner;public class 查找 { public static void main(String[] args){ int[] arr={10,20,30,40,50,60,70,80}; Scanner sr = new Scanner(System.in); System.out.println("请输入要查找的数:"); int number = sr.nextInt(); int Index = GetIndex(arr,number); System.out.println("Index:"+Index); } public static int GetIndex(int[] arr,int number){ int Index = -1; for(int x=0;x<arr.length;x++){ if(number==arr[x]){ Index=x; break; } } return Index; }}