def all_Characters_Same(s) :
    
    n = len(s)
    for i in range(1,n) :
        if s[i] != s[0] :
            return False
    return True
def all_Characters_Same(s):
    n = len(s)
    i = 1
    while i < n:
       
        if s[i] != s[0]:
            return False
        i += 1
    return True