1 array = [1, 2, 3] 2 reversed = array[::-1] # [3, 2, 1]

1 const arr = ["Hello", "World", "!"]; 2 let index = Math.floor(Math.random() * arr.length); 3 arr[index] // random element

1 const uniqueArray = [...new Set([1, 2, 2, 3, 3, 3])] // [ 1, 2, 3 ]

1 array = [1, 1, 2, 2, 2, 3] 2 max(set(array), key=array.count) # 2