Initial data commit

Task/Kronecker-product/JavaScript/kronecker-product-1.js

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+// matkronprod.js
+// Prime function:
+// mkp arrow function: Return the Kronecker product of the a and b matrices.
+// Note: both a and b must be matrices, i.e., 2D rectangular arrays.
+mkp=(a,b)=>a.map(a=>b.map(b=>a.map(y=>b.map(x=>r.push(y*x)),t.push(r=[]))),t=[])&&t;
+// Helper functions:
+// Log title and matrix mat to console
+function matl2cons(title,mat) {console.log(title); console.log(mat.join`\n`)}
+// Print title to document
+function pttl2doc(title) {document.write('<b>'+title+'</b><br />')}
+// Print title and matrix mat to document
+function matp2doc(title,mat) {
+  document.write('<b>'+title+'</b>:<br />');
+  for (var i = 0; i < mat.length; i++) {
+    document.write('&nbsp;&nbsp;'+mat[i].join(' ')+'<br />');
+  }
+}