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g0101_0200.s0171_excel_sheet_column_number.readme.md Maven / Gradle / Ivy

171\. Excel Sheet Column Number

Easy

Given a string `columnTitle` that represents the 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:** columnTitle = "A"

**Output:** 1 

**Example 2:**

**Input:** columnTitle = "AB"

**Output:** 28 

**Example 3:**

**Input:** columnTitle = "ZY"

**Output:** 701 

**Example 4:**

**Input:** columnTitle = "FXSHRXW"

**Output:** 2147483647 

**Constraints:**

*   `1 <= columnTitle.length <= 7`
*   `columnTitle` consists only of uppercase English letters.
*   `columnTitle` is in the range `["A", "FXSHRXW"]`.