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First solution in Clear category for Long Non Repeat by U.V
def non_repeat(line: str) -> str:
ans = line[:1]
for i in range(len(line)):
for j in range(len(line), i, -1):
k = j - i
if len(set(line[i:j])) == k and len(ans) < k:
ans = line[i:j]
return ans
Sept. 26, 2024