Vs remove array elements

1. problems encountered in the project

How to remove elements from an array

The array itself does not remove elements.

Therefore, it is relatively inefficient to convert data into arraylist.

Method 1:

Method 2:

Then I came up with another method: Create an array and then filter out the elements you don't want from the original array of the for loop.

Method 3:

If the length of the array is not long and you know the size of the array

You can create an array as follows: the element whose subscript is 1 is deleted, that is, the second element.

String [] array2 = new string [7] {array [0], array [2], array [3], array [4], array [5], array [6], array [7],};