In Ruby, there are a couple ways to accomplish this. The + operator is the first. This will append one array to the end of another, resulting in a third array containing both arrays' entries. Use the concat method instead of the + operator (the + operator and the concat method are functionally similar).
Use square brackets () to build an array in a Ruby program, and commas to separate the values you want to store.
Using the splice() technique to remove Array elements: This technique is used to change the contents of an array by removing or adding elements. You can specify the elements in a variety of ways when using the splice() method to delete them.