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GeezerVison is showing github.com — tech-code-interview/counting_valleys.py at master · BarthJr/tech-code-interview Expand file tree/ Copy pathcounting_valleys.pyMore file actions 21 lines (17 loc) · 479 Bytes / Copy pathcounting_valleys.pyFile metadata and controls21 lines (17 loc) · 479 Bytes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 # https://www.hackerrank.com/challenges/counting-valleys/problem """ >>> countingValleys('DDUUUUDD') 1 >>> countingValleys('UDDDUDUU') 1 """ def countingValleys(path): UPHILL = 'U' DOWNHILL = 'D' sea_level, number_valleys = 0, 0 for i, step in enumerate(path): path_elements = {UPHILL: 1, DOWNHILL: -1} sea_level += path_elements[step] if sea_level == 0 and path[i] == UPHILL: number_valleys += 1 return number_valleys |
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