[MySQL][LeetCode][Medium] 180. Consecutive Numbers

心得

這題要找出連續三次重複出現的數字,我原本一直在想如果中間有斷層(中間有資料被刪除)的話是否要先自己排序一次,結果看了一下Top Solutions才發現根本不用考慮這個問題,直接ID+1尋找下筆資料即可,既然這麼單純的話也沒什麼問題了。

問題

Write a SQL query to find all numbers that appear at least three times consecutively.

For example, given the above Logs table, 1 is the only number that appears consecutively for at least three times.

答案

  1. 方法對,但會TimeOut
  2. 通過