let arr = [10, 20, 30, 40, 50]
print(arr)

print(arr[0] + arr[4])

let i = 1
while(i < 4) {
    print(arr[i])
    i = i + 1
}

arr[0] = 99
print(arr)

for (let j = 0; j < 3; j = j + 1) {
    arr[j] = arr[j] * 2
}
print(arr)

let nested = [[1, 2], [3, 4], [5, 6]]
print(nested[1][0])

let empty = []
print(empty)

let mixed = [1, "hello", true, nil]
print(mixed)
print(mixed[1][0])

let same = [1, 2, 3]
let other = [1, 2, 3]
print(same == other)
print(same != [3, 2, 1])

let item = { name: "sword", price: 100 }
let items = [item, { name: "shield", price: 50 }]
print(items[0].name)
items[1].price = 75
print(items[1].price)