leetcode-171-Excel Sheet Column Number
2017-01-18 12:22
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问题
题目:[leetcode-171]思路
二十六进制转换为十进制,按权展开即可。代码
class Solution { public: int titleToNumber(string s) { int sz = s.size(); int ret = 0; for( int i = sz - 1, base = 1; i >= 0; --i, base *= 26 ){ ret += (s[i] -'A' + 1) * base; } return ret; } };
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