Base64 Encode

Problem

Encode a string to standard base64 using the alphabet A through Z, a through z, 0 through 9, plus and slash, with equals-sign padding.

Each group of three bytes becomes four characters; a final group of one or two bytes uses two or three characters plus padding. The empty string encodes to the empty string.

Hint

Pack three bytes into a 24-bit number and read it back six bits at a time.

Test cases

case 1

in: ["hello"]

expected: "aGVsbG8="

case 2

in: [""]

expected: ""

case 3

in: ["a"]

expected: "YQ=="

case 4

in: ["ab"]

expected: "YWI="

case 5

in: ["abc"]

expected: "YWJj"

case 6

in: ["Man"]

expected: "TWFu"

Starter codePython

def base64_encode(data):
    # Your code here
    pass

6 test cases · run your code against them in the editor