GoalScope — longest_substring_no_repeat (Qwen2.5-Coder-32B-Instruct) — hover a token to see the patched verbalization
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<code>↵
def longest_substring_no_repeat(s):↵
"""Returns the length of the longest substring without repeating characters."""↵
char_index_map = {}↵
longest = 0↵
start = 0↵
for i, char in enumerate(s):↵
if char in char_index_map and char_index_map[char] >= start:↵
start = char_index_map[char] + 1↵
char_index_map[char] = i↵
longest = max(longest, i - start + 1)↵
return longest↵
</code>