Java中的索引语法等效于[1：]

Question

In python, you can do arr[1:] which means from index 1 to end. Is there an equivalent in Java?

The closest I can think of is

for (int i : arr.length) {
   ...
}

But that doesn't iterate through the array within the input of a java array ( arr[] )

Answer 1

假设arr[1:]返回数组arr的副本，您将在其中获得从索引1到末尾的所有元素，请使用

Arrays.copyOfRange(arr, 1, arr.length);

Answer 2

You would have to use an index:

for (int i=1 ; i<arr.length ; i++) {
    ...
}

Using the enhanced for loop ( for (int i : arr) {...} ) goes through the whole array.

Answer 3

Off the top of my head the array must implement a collection for the enhanced loop to work

for (int i : arr) {}

// syntax
for (DataType identifier : arrayIdentifier) {}