Question: 
Write a python function to find the first repeated character in a given string.


Model's Code:
def first_Repeated_Char(s):
    seen = set()
    for char in s:
        if char in seen:
            return char
        seen.add(char)
    return '\0'



Sample Correct Code:
def first_Repeated_Char(str): 
    h = {}
    for ch in str:
        if ch in h: 
            return ch;
        else: 
            h[ch] = 0
    return '\0'


Asserts:
assert first_Repeated_Char("Google") == "o"
assert first_Repeated_Char("data") == "a"
assert first_Repeated_Char("python") == '\0'


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 217 of 974: 159/217 (73.27188940092167%): success