second_cheapest_book.md

Second-Cheapest Book

Allowed Time: 40 mins

Given an array of book objects, return the book object with the second-cheapest price. eg.

secondCheapest([
    {title:'Fox In Socks', price:32.20},
    {title:'The Cat In The Hat', price:16.20},
    {title:'Green Eggs and Ham', price:28.50},
    {title:'Thinking Fast and Slow', price:58.80}
]);

should return the third object in the input list.

Note:

• If the array is empty, return undefined
• If there is only one item in the array, return that item
• All books will have a different price
• Do not sort the list
• The return value must point to an object in the original list, not a copy of that object