Given a column title as appear in an Excel sheet, return its corresponding column number. For example: A -> 1 B -> 2 C -> 3 ... Z -> 26 AA -> 27 AB -> 28 ... Example 1: Input: "A" Output: 1 Example 2: Input: "AB" Outp…

public class Solution { private int ConvertToC(char c) { ; switch (c) { case 'A': case 'a': rnt = ; break; case 'B': case 'b': rnt = ; break; case 'C': case 'c': rnt = ; break; case 'D': case 'd': rnt = ; break; case 'E': case 'e': rnt = ; break; cas…

题意: A -> 1 B -> 2 C -> 3 ... Z -> 26 AA -> 27 AB -> 28 思路:找规律,挺简单的···可是小地方错了一些搞了半天···心塞 代码: int titleToNumber(string s) { int n = s.length(); ; ;i<n;i++) { ; ans += temp * func(n-i); } return ans; } int func(int n) { ) ; else { ; ;j&l…

/** 可看做26进制到10进制转换问题:v=26*v+s[i]-'A'; **/ class Solution { public: int titleToNumber(string s) { ; for(char a:s){ v=*v-; } return v; } };…

leetcode探索中级答案汇总: https://leetcode-cn.com/explore/interview/card/top-interview-questions-medium/ 1)数组和字符串: leetcode 15 三数之和(medium)排序+双指针 leetcode73 矩阵置零 (medium) 空间节省技巧 leetcode 49 字母异位词分组(medium)排序+哈希 leetcode 3 无重复字符的最长子串(medium) DP leetcode5 最长回文…