Adjacent elements product
Description
Given an array of integers, find the pair of adjacent elements that has the largest product and return that product.
Example
For inputArray = [3, 6, -2, -5, 7, 3], the output should be
adjacentElementsProduct(inputArray) = 21.
7 and 3 produce the largest product.
Input/Output
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[execution time limit] 4 seconds (js)
-
[input] array.integer inputArray
An array of integers containing at least two elements.
Guaranteed constraints:
2 ≤ inputArray.length ≤ 10,
-1000 ≤ inputArray[i] ≤ 1000
- [output] boolean
The largest product of adjacent elements.
[JavaScript (ES6)] Syntax Tips
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// Prints help message to the console
// Returns a string
function helloWorld(name) {
console.log("This prints to the console when you Run Tests");
return "Hello, " + name;
}
Solution
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function adjacentElementsProduct(inputArray) {
return Math.max(...inputArray.map((el,i)=>[el,inputArray[(i+1)%inputArray.length]]).slice(0,-1).map(([a,b])=>a*b));
}