add old solutions

1 files changed, 13 insertions, 0 deletions

diff --git a/6.lua b/6.lua
new file mode 100644
index 0000000..3c39a4b
--- /dev/null
+++ b/6.lua
@@ -0,0 +1,13 @@
+local function sum_of_squares(n)
+    local total = 0
+    for i = 1, n do
+        total = total + i^2
+    end
+    return total
+end
+
+local function square_of_sum(n)
+    return n^2*(n+1)^2/4
+end
+
+print(square_of_sum(100) - sum_of_squares(100))