(feat)finalizando teste 04 fibonacci

04-fibonacci/index.js

@@ -1,4 +1,17 @@
 export function fibonacci(value) {
-  // implementar logica aqui
+  if (value < 1) return 0
+  if (value <= 2) return 1
+  let fibonnaci1 = 0
+  let fibonnaci2 = 1
+  let fibx = value
+
+  for (let i = 2; i <= value; i++) {
+
+    fibx = fibonnaci2 + fibonnaci1
+    fibonnaci1 = fibonnaci2
+    fibonnaci2 = fibx
+  }
+
+  return fibx
 
 }