12 lines
308 B
Python
12 lines
308 B
Python
class Solution:
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def titleToNumber(self, columnTitle: str) -> int:
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dnum={}
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for i in range(26):
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dnum[chr(ord('A')+i)]=i+1
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result=0
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for i in range(1,len(columnTitle)+1):
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c=columnTitle[-i]
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result+=dnum[c]*(26**(i-1))
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return result
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