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| function getCountriesSortedByPopulation(arr) { | ||
| let newArr = [] | ||
| let sorted = arr.sort((a, b) => b.population - a.population) | ||
| sorted.forEach(e => newArr.push(e.country)) |
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Since .map() returns an array, can you write this function so that you don't need newArr?
| function isOdd() { | ||
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| function isOdd(n) { | ||
| if (n % 2 === 0) { |
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How can you use a ternary operator here?
| let count = 0 | ||
| let num = n.toString() | ||
| for (let i of num) { | ||
| count += 1 |
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What is a property that strings have which provides us with the number of characters in the string? You can use this property in place of the for loop.
| function sevenBoom(n) { | ||
| let newArr = [] | ||
| for (let i = 1; i <= n; i += 1) { | ||
| if (i % 7 === 0 || i % 10 === 7) { |
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Consider numbers 70-79; will they be 'BOOM' based on this function? How can you find any number that contains a 7 in any digit?
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