LeetCode 171: Excel Sheet Column Number
2015-03-29 22:14
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example:
类似于一个26进制的数
进位:
for(int i=0;i<l;i++)
{
sum=sum*26+(s[i]-'A'+1);
}
代码:
A -> 1 B -> 2 C -> 3 ... Z -> 26 AA -> 27 AB -> 28
类似于一个26进制的数
进位:
for(int i=0;i<l;i++)
{
sum=sum*26+(s[i]-'A'+1);
}
代码:
class Solution { public: int titleToNumber(string s) { int l=s.length(); int sum=0; for(int i=0;i<l;i++) { sum=sum*26+(s[i]-'A'+1); } return sum; } };
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