Pavel - live coding

index.js

const inputString = 'cat has eaten big fat nimble fish, which made the cat fat';

const filter = (filterValue, input) => input.split(' ')
  .reduce((acc, curr) => {
    if (curr !== filterValue) acc.push(curr);
    return acc;
  }, []) // ['has', 'eaten' ...]
  .join(' ')
;

filter('cat', inputString); // 'has eaten big fat nimble fish, which made the fat'


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// do not use %
function isEven(num) {
  let N = Math.abs(num);
  if (N === 1) {
    return false;
  }
  if (N === 0) {
    return true;
  }
  isEven(N - 2);
}

isEven(8) // true
isEven(-7) // false
isEven(13) // false (-13)
isEven(1) // false
isEven(0) // true
isEven(-1) // false
isEven(-29) // false

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function range (from, to, step) {
  let ourArray = [];

  for (let i = from; i < (to/step); i + step) {
    ourArray.push(i + step);
  }

  return ourArray;
}

range(2, 26, 2) // [2, 4, 6, 8 ... 26]