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推廣網站開發,包含 Laravel 和 Kotlin 後端撰寫、自動化測試、讀書心得等。Taiwan Kotlin User Group 管理員。

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Hi, here’s your problem today. This problem was recently asked by Amazon:

MS Excel column titles have the following pattern: A, B, C, …, Z, AA, AB, …, AZ, BA, BB, …, ZZ, AAA, AAB, … etc. In other words, column 1 is named “A”, column 2 is “B”, column 26 is “Z”, column 27 is “AA” and so forth. Given a positive integer, find its corresponding column name. Examples:

Input: 26
Output: Z

Input: 51
Output: AY

Input: 52
Output: AZ

Input: 676
Output: YZ

Input: 702
Output: ZZ

Input: 704
Output: AAB

Here is a starting point:

class Solution:
  def convertToTitle(self, n):
    # Fill this in.

input1 = 1
input2 = 456976
input3 = 28
# A
# AB