Array-Sum-Without-High-or-Low-Value.js

//Task Sum all the numbers of a given array ( cq. list ), except the highest and the lowest element ( by value, not by index! ).The highest or lowest element respectively is a single element at each edge, even if there are more than one with the same value. Mind the input validation.

//solution:

function sumArray(array) {
  if(array == null || !array.length ) return 0;
  array.sort((a, b) => a-b);
  const sum = 0;
  for(let i = 1; i < array.length-1; i++)sum+=array[i];
  return sum;
}