fix: Average Median code cleanup (TheAlgorithms#1388)

Author: developerr-ayush

Maths/AverageMedian.js

@@ -9,22 +9,14 @@
  */
 
 const averageMedian = (sourceArrayOfNumbers) => {
- let numbers = [...sourceArrayOfNumbers]
- let median = 0
+ const numbers = [...sourceArrayOfNumbers].sort(sortNumbers)
  const numLength = numbers.length
- numbers = numbers.sort(sortNumbers)
 
- if (numLength % 2 === 0) {
- median = (numbers[numLength / 2 - 1] + numbers[numLength / 2]) / 2
- } else {
- median = numbers[(numLength - 1) / 2]
- }
-
- return median
+ return numLength % 2 === 0
+ ? (numbers[numLength / 2 - 1] + numbers[numLength / 2]) / 2
+ : numbers[Math.floor(numLength / 2)]
 }
 
-const sortNumbers = (num1, num2) => {
- return num1 - num2
-}
+const sortNumbers = (num1, num2) => num1 - num2
 
 export { averageMedian }