feat: oct 2 level 1

python/oct2/level1/interleaveStrings.py

···
+def interleaveStrings(s1: str, s2: str) -> str:
+    """Interleave two strings."""
+    s = ""
+    for i in range(max(len(s1), len(s2))):
+        if i < len(s1):
+            s += s1[i]
+        if i < len(s2):
+            s += s2[i]
+    return s
+
+
+print("Testing interleaveStrings()...", end="")
+assert interleaveStrings("pto", "yhn") == "python"
+assert interleaveStrings("ab", "xyz?") == "axbyz?"
+assert interleaveStrings("a", "b") == "ab"
+assert interleaveStrings("xyz", "a b") == "xay zb"
+assert interleaveStrings("", "cpcs1") == "cpcs1"
+assert interleaveStrings("cpcs1", "") == "cpcs1"
+assert interleaveStrings("", "") == ""
+print("Passed!")

python/oct2/level1/largestNumber.py

···
+def largestNumber(text: str) -> int | None:
+    """Find the largest number in a string."""
+    number = [int(word) for word in text.split() if word.isdigit()]
+    return max(number) if number else None
+
+
+print("Testing largestNumber()...", end="")
+assert largestNumber("I saw 3 dogs, 17 cats, and 14 cows!") == 17
+assert largestNumber("One person ate two hot dogs!") == None
+assert largestNumber("There are no numbers in this text.") == None
+assert largestNumber("I have 2 cats, but the shelter has 20") == 20
+text = "It is 82 degrees Fahrenheit, which is 28 degree Celsius."
+assert largestNumber(text) == 82
+text = "Not one of my 10 penguins are taller than 2 feet 11 inches."
+assert largestNumber(text) == 11
+assert largestNumber("15-112 is also 112 and is my favorite class.") == 112
+assert largestNumber("0 classifies as an integer") == 0
+assert largestNumber("") == None
+print("Passed!")

python/oct2/level1/rotateString.py

···
+def rotateString(s: str, k: int) -> str:
+    """Rotate a string by k positions."""
+    k %= len(s)
+    return s[k:] + s[:k]
+
+
+print("Testing rotateString()...", end="")
+assert rotateString("abcd", 1) == "bcda"
+assert rotateString("abcd", -1) == "dabc"
+assert rotateString("efgh", 4) == "efgh"
+assert rotateString("coffee", 2) == "ffeeco"
+assert rotateString("112cmu", -3) == "cmu112"
+assert rotateString("water", -9) == "aterw"
+print("Passed!")

python/oct2/level1/sameChars.py

···
+def sameChars(s1: str, s2: str) -> bool:
+    """Check if two strings have the same characters regardless of order or count."""
+    if not (isinstance(s1, str) and isinstance(s2, str)):
+        return False
+    c1 = list(set(s1))
+    c2 = list(set(s2))
+    c1.sort()
+    c2.sort()
+    print(c1, c2)
+    return c1 == c2
+
+
+print("Testing sameChars()...", end="")
+assert sameChars("abc", "bac") == True
+assert sameChars("aaaaabbbbbbccccc", "abc") == True
+assert sameChars("abc", "ba") == False
+assert sameChars("ba", "abc") == False
+assert sameChars("AAAAAAaaaa", "Aa") == True
+assert sameChars("NNN", "n") == False
+assert sameChars("123", "123") == True
+assert sameChars("", "a") == False
+assert sameChars("", "") == True
+assert sameChars(14, "14") == False
+print("Passed!")

python/oct2/level1/vowelCount.py

···
+def vowelCount(s: str) -> int:
+    """Count the number of vowels (a, e, i, o, u) in a string."""
+    s = s.lower()
+    return s.count("a") + s.count("e") + s.count("i") + s.count("o") + s.count("u")
+
+
+print("Testing vowelCount()...", end="")
+assert vowelCount("Abc def!!! a? yzyzyz!") == 3
+assert vowelCount("Hi! How are you?") == 6
+assert vowelCount("AAAEEEiOL") == 8
+assert vowelCount("Rhythm") == 0
+assert vowelCount("WHY, TRY SHY FLY RHYTHMS SLYLY.") == 0
+print("Passed!")