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First solution in Clear category for The Stone Wall by kodix09
def stone_wall(wall):
cols = [list(i) for i in zip(*wall.strip().split("\n"))]
return min((i for i in range(len(cols))), key=lambda x: cols[x].count("#"))
if __name__ == '__main__':
print("Example:")
print(stone_wall('''
##########
####0##0##
00##0###00
'''))
#These "asserts" using only for self-checking and not necessary for auto-testing
assert stone_wall('''
##########
####0##0##
00##0###00
''') == 4
assert stone_wall('''
#00#######
#######0##
00######00
''') == 1
assert stone_wall('''
#####
#####
#####
''') == 0
print("Coding complete? Click 'Check' to earn cool rewards!")
Sept. 21, 2018