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Challenge 18: Second Best

curriculum/challenges/english/blocks/daily-coding-challenges-python/6821ebe4237de8297eaee794.md

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--description--

Given an array of integers representing the price of different laptops, and an integer representing your budget, return:

  1. The second most expensive laptop if it is within your budget, or
  2. The most expensive laptop that is within your budget, or
  3. 0 if no laptops are within your budget.
  • Duplicate prices should be ignored.

--hints--

get_laptop_cost([1500, 2000, 1800, 1400], 1900) should return 1800

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_laptop_cost([1500, 2000, 1800, 1400], 1900), 1800)`)
}})

get_laptop_cost([1500, 2000, 2000, 1800, 1400], 1900) should return 1800

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_laptop_cost([1500, 2000, 2000, 1800, 1400], 1900), 1800)`)
}})

get_laptop_cost([2099, 1599, 1899, 1499], 2200) should return 1899

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_laptop_cost([2099, 1599, 1899, 1499], 2200), 1899)`)
}})

get_laptop_cost([2099, 1599, 1899, 1499], 1000) should return 0

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_laptop_cost([2099, 1599, 1899, 1499], 1000), 0)`)
}})

get_laptop_cost([1200, 1500, 1600, 1800, 1400, 2000], 1450) should return 1400

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(get_laptop_cost([1200, 1500, 1600, 1800, 1400, 2000], 1450), 1400)`)
}})

--seed--

--seed-contents--

py
def get_laptop_cost(laptops, budget):

    return laptops

--solutions--

py
def get_laptop_cost(laptops, budget):
    laptops = sorted(set(laptops), reverse=True)

    if len(laptops) >= 2 and budget >= laptops[1]:
        return laptops[1]
    if not laptops or budget < laptops[-1]:
        return 0

    for price in laptops[2:]:
        if budget >= price:
            return price

    return 0