Missing what is it about. Just simplyfing things :)
COLORS = set("RGB") def blend(c1, c2): colors = {c1, c2} return c1 if len(colors) == 1 else (COLORS - colors).pop() def preprocess(row): check = "" for r in row: if r != check: yield r check = r def triangle(row): row = list(preprocess(row)) while len(row) > 1: for i,r in enumerate(row[:-1]): row[i] = blend(r, row[i+1]) row.pop() return row[0]import re- COLORS = set("RGB")
- def blend(c1, c2):
if c1 == c2: return c1colors = c1 + c2if colors == "RB" or colors == "BR": return "G"if colors == "RG" or colors == "GR": return "B"if colors == "GB" or colors == "BG": return "R"- colors = {c1, c2}
- return c1 if len(colors) == 1 else (COLORS - colors).pop()
- def preprocess(row):
orig = rowrow,_ = re.subn('RR+', 'R', row)row,_ = re.subn('BB+', 'B', row)row,_ = re.subn('GG+', 'G', row)print(orig, row)return row- check = ""
- for r in row:
- if r != check:
- yield r
- check = r
- def triangle(row):
if len(row) == 1: return rowrow = preprocess(row)row = list(row)for j in range(len(row)-1,0,-1):for i in range(j):row[i] = blend(row[i], row[i+1])return row[0]- row = list(preprocess(row))
- while len(row) > 1:
- for i,r in enumerate(row[:-1]):
- row[i] = blend(r, row[i+1])
- row.pop()
- return row[0]