cat_dog

Requirements:

• substrings and slicing

• if, elif, else

• loop through a string (while)

• loop with an accumulator variable

• returning a value

Return true if the string “cat” and “dog” appear the same number of times in the given string.

cat_dog("catdog") -> true
cat_dog("catcat") -> false
cat_dog("1cat1cadodog") -> true

This exercise was taken from codingbat.com and has been adapted for the Python language. There are many great programming exercises there, but the majority are created for Java.

Starter Code

def cat_dog(string: str) -> bool:
    pass


result = cat_dog('catdog')
print(result)

Tests

from main import cat_dog


def test_cat_dog_1():
    assert cat_dog('catdog') == True


def test_cat_dog_2():
    assert cat_dog('catcat') == False


def test_cat_dog_3():
    assert cat_dog('1cat1cadodog') == True


def test_cat_dog_4():
    assert cat_dog('catxxdogxxxdog') == False


def test_cat_dog_5():
    assert cat_dog('catxdogxdogxcat') == True


def test_cat_dog_6():
    assert cat_dog('catxdogxdogxca') == False


def test_cat_dog_7():
    assert cat_dog('dogdogcat') == False


def test_cat_dog_8():
    assert cat_dog('dogogcat') == True


def test_cat_dog_9():
    assert cat_dog('dog') == False


def test_cat_dog_10():
    assert cat_dog('cat') == False


def test_cat_dog_11():
    assert cat_dog('ca') == True


def test_cat_dog_12():
    assert cat_dog('c') == True


def test_cat_dog_13():
    assert cat_dog('') == True