Challenge:
Given two null-terminated strings in the arguments "string" and "prefix", determine if "string" starts with the "prefix" string. Return 1 (or any other "truthy" value) if true, 0 if false.

Example:
```
startsWith("hello world!", "hello"); // should return 1.
startsWith("hello world!", "HELLO"); // should return 0.
startsWith("nowai", "nowaisir"); // should return 0.
```

Addendum:
For this problem, an empty "prefix" string should always return 1 (true) for any value of "string".

If the length of the "prefix" string is greater than the length of the "string", return 0.

The check should be case-sensitive, i.e. startsWith("hello", "HE") should return 0, whereas startsWith("hello", "he") should return 1.

The length of the "string" as well as the "prefix" can be defined by the formula: 0 <= length < +Infinity

No characters should be ignored and/or omitted during the test, e.g. whitespace characters should not be ignored.

Difficulty: EASY
Starter code: def starts_with(st, prefix):
	

Solutions:
starts_with = str.startswith


def starts_with(st, prefix):
	return st.startswith(prefix)


def starts_with(st, prefix):
	return 1 if st[:len(prefix)] == prefix else 0


def starts_with(st, prefix):
	x = len(prefix)
	if len(prefix) > len(st):
		return False
	if st[:x] == prefix:
		return True
	return False


def starts_with(stg, prefix):
	return stg.startswith(prefix)


def starts_with(st, prefix):
	if len(st) == 0 != len(prefix):
		return False
	elif len(prefix) == 0:
		return True
	else:
		try:
			a = 0
			for i in range(len(prefix)):
				if st[i] == prefix[i]:
					a += 1
			if a == len(prefix):
				return True
			else:
				return False
		except:
			return False


def starts_with(s, prefix):
	return s[:len(prefix)] == prefix


def starts_with(st, prefix):
	if len(prefix) == 0:
		return True
	elif len(prefix) > len(st):
		return False
	else:
		return st.startswith(prefix)


def starts_with(st, prefix):
	if st.startswith(prefix):
		return 1
	return 0


def starts_with(st, prefix):
	if not len(prefix) <= len(st):
		return False
	else:
		return st[:len(prefix)] == prefix