Pascal's Triangle - danieljhegeman

gistfile1.txt

var generate = function(numRows) {
  result = [];
  if (numRows >= 1) {
    result = [[1]];
    numRows--;
  }
  for (var i = 0; i < numRows; ++i) {
    var prev = result[result.length - 1];
    var next = [1]; // initialize
    for (var k = 0; k < prev.length - 1; ++k) {
      next.push(prev[k] + prev[k + 1]);
    }
    next.push(1);
    result.push(next);
  }
  return result;
};