Merge K sorted array

This is LeetCode problem 23: merge K sorted array.

The solution is to use heap to merge sub array.

I provide three kinds of solution. Use the second solution to pass LeetCode.

Link Image in Linkedin

 I want to link my web site and github to linkedin, but I found a missing site thumbnail.

To fix that, I need to add tag like

<meta property="og:image" content="image url" />

in gatsby project > components > seo.js.

      meta={[

        {

          name: `description`,

          content: metaDescription,

        },

        {

          property: `og:title`,

          content: title,

        },

        {

          name: "image",

          property: `og:image`,

          content: thumbnail,

        },

        {

          name: "description",

          property: `og:description`,

          content: metaDescription,

        },

        {

          property: `og:type`,

          content: `website`,

        },

        {

          name: `twitter:card`,

          content: `summary`,

        },

        {

          name: `twitter:creator`,

          content: site.siteMetadata?.author || ``,

        },

        {

          name: `twitter:title`,

          content: title,

        },

        {

          name: `twitter:description`,

          content: metaDescription,

        },

      ].concat(meta)}

Since both title and description are data loaded from gatsby-config.js. 

So I try to add image into configuration. However, the image path can not be transpiled correctly.

The correctly way to do that is import image:

import thumbnail from '../images/monster.png' 

After redo, I have thumbnail shown now.

 

 

 

 

heroku deployment

 Few lessons I learned when I deployed react apps.

1. Show to start up:
   Need to switch another buildpacks intead of heroku default node.js
   

   heroku buildpacks:set mars/create-react-app -a <appname>

2. Error of no web process:
   

   at=error code=H14 desc="No web processes running" method=GET path="/"

   
   To solve it, run
   

   heroku ps:scale web=1

   
   
3. PUBLIC_URL
   In the package.json, I have :
   "homepage": "http://mywebsite.com/relativepath"
   It's for deploying to github some time I did and I just forgot it.
   That took me a while to figure out.
   

heroku cheat sheets

 Login

heroku login

 

Logs

heroku logs -a [app name] --tail

heroku logs -app [app name] --tail