查找
在数组中查找对应数值的索引
public class Seek{
public static void main(String[] args) {
int [] arr = {1,2,3};
int y = Seek(arr,1);
System.out.println(y);
}
public static int Seek(int[] arr,int number){
for (int index = 0;index<arr.length;index++) {
if (arr[index] == number) {
//找到数值,返回索引
return index;
}
//没找到数值,返回-1
}return -1;
}
}