Created
November 30, 2017 23:51
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| def compress(s): | |
| run = "" | |
| length = len(s) | |
| if length == 0: | |
| return "" | |
| # "A" --> "A1" | |
| if length == 1: | |
| return s + "1" | |
| cnt = 1 | |
| i = 1 | |
| while i < length: | |
| if s[i] == s[i-1]: | |
| cnt +=1 | |
| else: | |
| run = run + s[i-1] + str(cnt) | |
| cnt = 1 | |
| i += 1 | |
| run = run + s[i-1] + str(cnt) | |
| return run |
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