left join hashmap

Mohammad alshraideh answered on August 30, 2022 Popularity 1/10 Helpfulness 1/10

answer left join hashmap

left join hashmap

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const join = (leftTable, rightTable, direction) => {
  let tableOne;
  let tableTwo;

  if (direction.toLowerCase() === 'left') {
    tableOne = leftTable;
    tableTwo = rightTable;
  } else if (direction.toLowerCase() === 'right') {
    tableOne = rightTable;
    tableTwo = leftTable;
  } else { throw 'error, invalid join direction'; }

  const results = [];
  for (let i = 0; i < tableOne.buckets.length; i++) {
    const row = [];
    if (tableOne.buckets[i]) {
      const key = (Object.keys(tableOne.buckets[i].head.value)[0]);
      const value = (tableOne.buckets[i].head.value[key]);
      row[row.length] = key;
      row[row.length] = value;
      if (tableTwo.contains(key)) {
        row[row.length] = tableTwo.get(key);
      }
      else { row[row.length] = null; }
      results[results.length] = row;
    }
  }
  return results;
};

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: hashmap javascript left-join

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Contributed on Aug 30 2022

Mohammad alshraideh

0 Answers Avg Quality 2/10

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