Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Given an JavaScript object list of books that each have a pages attribute to define the number of pages in the book, find the sum of all the pages in the object list of books using recursion.

Keep in mind:

  • The input list object may be completely empty (ex. {})
  • The next attribute may not be defined

function getPageCount(list) {
// your code here
// returns an integer
}

Example test case:
Input:
{
"book":"A",
"pages":1,
"next":{
"book":"B",
"pages":2,
"next":{
"book":"C",
"pages":3,
"next": null
}
}
}

Output: 6
Reasoning: 1 + 2 + 3 pages

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