Add Margo's fibs

1 files changed, 23 insertions, 0 deletions

diff --git a/entries/margoseltzer/efficiency.c b/entries/margoseltzer/efficiency.c
new file mode 100644
index 0000000..6e017f3
--- /dev/null
+++ b/entries/margoseltzer/efficiency.c
@@ -0,0 +1,23 @@
+unsigned long foo(unsigned long n) {
+     if (n < 2) return (n);
+     return(foo(n - 1) + foo(n - 2));
+}
+
+// Efficiency of expression
+
+unsigned long bar(unsigned long n) {
+    unsigned long i, last;
+    unsigned long sum, tmp;
+
+    if (n < 2) return (n);
+    last = 0;
+    sum = 1;
+    for (i = 2; i <= n; i++) {
+        tmp = sum;
+        sum += last;
+        last = tmp;
+    }
+    return (sum);
+}
+
+// Efficiency in resource utilization