A-M baby

Task/Fibonacci-sequence/Dart/fibonacci-sequence.dart

@@ -0,0 +1,20 @@
+int fib(int n) {
+  if(n==0 || n==1) {
+    return n;
+  }
+  int prev=1;
+  int current=1;
+  for(int i=2;i<n;i++) {
+    int next=prev+current;
+    prev=current;
+    current=next;
+  }
+  return current;
+}
+
+int fibRec(int n) => n==0||n==1 ? n : fibRec(n-1)+fibRec(n-2);
+
+main() {
+  print(fib(11));
+  print(fibRec(11));
+}