done

src/functions.ts

@@ -8,6 +8,7 @@
  */
 function greet(name: string): void {
   // Your code here
+  console.log("Hello " + name);
 }
 
 /**
@@ -21,8 +22,11 @@ function greet(name: string): void {
  */
 function isOdd(n: number): boolean {
   // Your code here
-
-  return false; // replace false with what you see is fit
+  if (n % 2 === 1) {
+    return true;
+  } else {
+    return false; // replace false with what you see is fit
+  }
 }
 
 /**
@@ -36,8 +40,13 @@ function isOdd(n: number): boolean {
  */
 function oddsSmallerThan(n: number): number {
   // Your code here
-
-  return -1; // replace -1 with what you see is fit
+  let count = 0;
+  for (let i = 1; i < n; i++) {
+    if (i % 2 === 1) {
+      count = count + 1;
+    }
+  }
+  return count; // replace -1 with what you see is fit
 }
 
 /**
@@ -52,8 +61,11 @@ function oddsSmallerThan(n: number): number {
  */
 function squareOrDouble(n: number): number {
   // Your code here
-
-  return -1; // replace -1 with what you see is fit
+  if (n % 2 === 1) {
+    return n * n;
+  } else {
+    return n * 2; // replace -1 with what you see is fit
+  }
 }
 
 export { greet, isOdd, oddsSmallerThan, squareOrDouble };