Ethiopian multiplication: Difference between revisions

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 =={{header|D}}==
-<lang d>import std.stdio;
+<lang d>int ethiopian(int n1, int n2) {
-int dub(int num) { return num << 1; }
+    static int doubleNum(int n) { return n * 2; }
-int halve(int num) { return num >> 1; }
+    static int halveNum(int n) { return n / 2; }
-bool isEven(int num) { return !(num & 1); }
+    static bool isEven(int n) { return !(n % 2); }
-int ethiopian(int n1, int n2) {
+    int result;
-    int ret = 0;
-    while(n1 >= 1) {
+    while (n1 >= 1) {
-        if (!isEven(n1)) ret += n2;
+        if (!isEven(n1))
-        n1 = halve(n1);
+            result += n2;
-        n2 = dub(n2);
+        n1 = halveNum(n1);
+        n2 = doubleNum(n2);
      }
-     return ret;
+     return result;
 }
-int main() {
+void main() {
-    writefln("17 ethiopian 34 is %d", ethiopian(17, 34));
+    printf("17 ethiopian 34 is %d\n", ethiopian(17, 34));
-    return 0;
 }</lang>