Label Encoding from Names

Problem

Map class names to integer ids.

Assign ids in order of first appearance (0, 1, 2, ...) and return the encoded list. An empty input returns [].

case 1

in: [["cat","dog","cat","bird"]]

expected: [0,1,0,2]

case 2

in: [["a"]]

expected: [0]

case 3

in: [[]]

expected: []

case 4

in: [["b","a","b","a"]]

expected: [0,1,0,1]

Starter codePython

def encode_labels(names):
    # Your code here
    pass

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