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3 1 月, 2022

[已解決] Ajax 發送請求返回錯誤狀態碼 500、readyState 4

Last Updated on 2022-01-03 by Clay

一直以來，在 WordPress 建置的外掛（plugin），我都是透過 Ajax 發送請求以完成前端介面與後端資料庫間的資料交換。不論是讀取資料庫中的資料、或是將使用者進行的操作寫入資料庫，使用 Ajax 都可以輕鬆地辦到。

Read More »[已解決] Ajax 發送請求返回錯誤狀態碼 500、readyState 4

LeetCode: 997-Find the Town Judge 解題紀錄

Last Updated on 2022-01-03 by Clay

In a town, there are n people labeled from 1 to n. There is a rumor that one of these people is secretly the town judge.

If the town judge exists, then:

1. The town judge trusts nobody.
2. Everybody (except for the town judge) trusts the town judge.
3. There is exactly one person that satisfies properties 1 and 2.

You are given an array trust where trust[i] = [ai, bi] representing that the person labeled ai trusts the person labeled bi.

Return the label of the town judge if the town judge exists and can be identified, or return -1 otherwise.
Read More »LeetCode: 997-Find the Town Judge 解題紀錄