count_hi

Requirements:

• substrings and slicing

• loop through a string (while)

• loop with an accumulator variable

• returning a value

Return the number of times that the string “hi” appears anywhere in the given string.

count_hi("abc hi ho") -> 1
count_hi("ABChi hi") -> 2
count_hi("hihi") -> 2

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 count_hi(string: str) -> int:
    pass


result = count_hi('abc hi ho')
print(result)

Tests

from main import count_hi


def test_count_hi_1():
    assert count_hi('abc hi ho') == 1


def test_count_hi_2():
    assert count_hi('ABChi hi') == 2


def test_count_hi_3():
    assert count_hi('hihi') == 2


def test_count_hi_4():
    assert count_hi('hiHIhi') == 2


def test_count_hi_5():
    assert count_hi('') == 0


def test_count_hi_6():
    assert count_hi('h') == 0


def test_count_hi_7():
    assert count_hi('hi') == 1


def test_count_hi_8():
    assert count_hi('Hi is no HI on ahI') == 0


def test_count_hi_9():
    assert count_hi('hiho not HOHIhi') == 2