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Discussion on: JavaScript Coding Challenges

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mehdibenhemdene profile image
mehdibenhemdene •

Suggested alternative solution for "Where do I belong" using Array.prototype.filter:

var array = [1, 2, 3, 4];

function getIndexToIns(arr, number) {
  let result = arr.sort().filter(el => el <= number).length;
  return result;
}

console.log(getIndexToIns(array, 8));
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mehdibenhemdene profile image
mehdibenhemdene •

Also a simple "Destroyer" implementation:

function destroyer(arr, ...params) {
  return arr.filter(el=>!params.includes(el));
}
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ramnewton profile image
Ram Newton • 
function destroyer(arr, ...params){
    params_set = new Set(params);
    return arr.filter(item => !(params_set.has(item)))
};
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.includes() does a linear search. Creating a set out of the parameters and using the .has() method will improve performance