Get substring from string - from position - to pos
/**
* Substring (startPosition, endPosition): Get substring from string - from position - to pos
*
* @param x1 MyString
* @param x2 start position
* @param x3 end position
* @return {Array}
*/
function neuron525(x1, x2, x3)
{
return[x1.toString().substring(x2, x3)];
}
console.log(neuron525(615, 121, 696));