L2.js

// Function: L2()

// Authors: Corey Devin Anderson and Kirankumar Batchu

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// Description:

// Calculates the L2 norms of a 1D Array. Ignores value in calculation if null.

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// Parameters:
// a : 1D Array for which the L2 norm will be calculated

// Returns:
// A scalar representing the L2 norm

// Dependencies:
// none

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//------------------------------------------------------------------------------

// Function: L2()

// START
function L2(a) {
  let squares = a.map(function(x){if (x != null) {return (x) ** 2} else {return null}});
  let sum = 0; 
  squares.forEach(element => sum = sum + element); // Sum the squares
return(sum ** 0.5);  // return the square root of the sums of squares
}
// END

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