定义一个方法,实现从数组中查询指定元素的索引
public class indexes {
public static void main(String[] args) {
int[] x = {10, 20, 30, 40, 50} ;
int y =s(x,10);
System.out.println(y);
}
public static int s(int[]x,int c){
for (int i = 0; i < x.length; i++) {
if (x[i]==c){
return i;
}
}
return -1;
}
}