update starter file

exercises/practice/difference-of-squares/src/difference_of_squares.clj

@@ -1,13 +1,19 @@
 (ns difference-of-squares)
 
-(defn difference [] ;; <- arglist goes here
-  ;; your code goes here
-)
+(defn square-of-sum
+  "Returns the square of the sum of the numbers up to the given number"
+  [n]
+  ;; function body
+  )
 
-(defn sum-of-squares [] ;; <- arglist goes here
-  ;; your code goes here
-)
+(defn sum-of-squares
+  "Returns the sum of the squares of the numbers up to the given number"
+  [n]
+  ;; function body
+  )
 
-(defn square-of-sum [] ;; <- arglist goes here
-  ;; your code goes here
-)
+(defn difference
+  "Returns the difference between the square of the sum of numbers up to a given number and the sum of the squares of those numbers"
+  [n]
+  ;; function body
+  )