Find max value comparing multiple arrays for each index

Question

I\'m trying to find a method to find the max value comparing multiple(unknown number, but same length) arrays for each observation in the arrays, returning an array with the max

Answer 1

You could use Array.reduce():

    var A = [[2.2, 3.3, 1.3], [1.2, 5.3, 2.2], [0.3, 2.2, 5.2]];
    
    var max = A.reduce(function(final, current) {
      for (var i = 0; i < final.length; ++i) {
        if (current[i] > final[i]) {
          final[i] = current[i];
        }
      }
      return final;
    });
    
    console.log(max);

The inner function compares the current maximum with the next array element and so final always holds the maximum value for all elements traversed thus far.