Initial data commit

Task/Ethiopian-multiplication/JavaScript/ethiopian-multiplication-1.js

@@ -0,0 +1,24 @@
+var eth = {
+	
+	halve : function ( n ){  return Math.floor(n/2);  },
+	double: function ( n ){  return 2*n;              },
+	isEven: function ( n ){  return n%2 === 0);       },
+	
+	mult: function ( a , b ){
+		var sum = 0, a = [a], b = [b];
+		
+		while ( a[0] !== 1 ){
+			a.unshift( eth.halve( a[0] ) );
+			b.unshift( eth.double( b[0] ) );
+		}
+		
+		for( var i = a.length - 1; i > 0 ; i -= 1 ){
+			
+			if( !eth.isEven( a[i] ) ){
+				sum += b[i];
+			}
+		}		
+		return sum + b[0];
+	}
+}
+// eth.mult(17,34) returns 578

Task/Ethiopian-multiplication/JavaScript/ethiopian-multiplication-2.js

@@ -0,0 +1,12 @@
+function ethMult(m, n) {
+  var o = !isNaN(m) ? 0 : ''; // same technique works with strings
+  if (n < 1) return o;
+  while (n > 1) {
+    if (n & 1) o += m;  // 3. integer odd/even? (bit-wise and 1)
+    n >>= 1;            // 1. integer halved (by right-shift)
+    m += m;             // 2. integer doubled (addition to self)
+  }
+  return o + m;
+}
+
+ethMult(17, 34)

Task/Ethiopian-multiplication/JavaScript/ethiopian-multiplication-3.js

@@ -0,0 +1 @@
+ethMult('Ethiopian', 34)