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bookChallenge: Selecting Random Products Within a Category

Oppgave

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Imagine you have a list of products from an online store. Your goal is to group them by category, pick a random product from each group, and display the result.

  1. Group the list of products by category using groupingBy().
  2. For each category (productList), get the list of products using the stream() method and select a random product with findAny().
  3. Check if the Optional contains a value using ifPresent().
  4. If Optional has a value, print the information in the following format: "Category: {category} => {product}".

Løsning

solution.java

solution.java

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Seksjon 3. Kapittel 11
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bookChallenge: Selecting Random Products Within a Category

Oppgave

Swipe to start coding

Imagine you have a list of products from an online store. Your goal is to group them by category, pick a random product from each group, and display the result.

  1. Group the list of products by category using groupingBy().
  2. For each category (productList), get the list of products using the stream() method and select a random product with findAny().
  3. Check if the Optional contains a value using ifPresent().
  4. If Optional has a value, print the information in the following format: "Category: {category} => {product}".

Løsning

solution.java

solution.java

Switch to desktopBytt til skrivebordet for virkelighetspraksisFortsett der du er med et av alternativene nedenfor
Alt var klart?

Hvordan kan vi forbedre det?

Takk for tilbakemeldingene dine!

Seksjon 3. Kapittel 11
single

single

close

Awesome!

Completion rate improved to 2.33

bookChallenge: Selecting Random Products Within a Category

Sveip for å vise menyen

Oppgave

Swipe to start coding

Imagine you have a list of products from an online store. Your goal is to group them by category, pick a random product from each group, and display the result.

  1. Group the list of products by category using groupingBy().
  2. For each category (productList), get the list of products using the stream() method and select a random product with findAny().
  3. Check if the Optional contains a value using ifPresent().
  4. If Optional has a value, print the information in the following format: "Category: {category} => {product}".

Løsning

solution.java

solution.java

Switch to desktopBytt til skrivebordet for virkelighetspraksisFortsett der du er med et av alternativene nedenfor
Alt var klart?

Hvordan kan vi forbedre det?

Takk for tilbakemeldingene dine!

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