Question

如何判断一个数组中是否包含一个字符或字符串

Answer 1

第一种方法：遍历数组

String[] arr1 = {"1","2","3","4","6","7"};

for (int i = 0; i < arr1.length; i++) {
if("5".equals(arr1[i])) {
System.out.println("包含");
}else {
System.out.println("不包含");
}
}

第二种方法：先把数组转换成list；再判断contains

String[] arr = {"1","2","3","4","6","7"};
List<String> list=Arrays.asList(arr);
System.out.println(list.contains("5"));