数组元素查找(查找指定元素第一次在数组中出现的索引)

public class 查找 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int [] arr = {2,5,4,6,8,4,1,3,7,5};
		int b = 6;
		for(int i = 0; i<arr.length;i++) {
			if(arr[i]==b) {
				System.out.println(i);
			}
		}
	}

}