1 files changed, 5 insertions, 0 deletions
diff --git a/H61.hs b/H61.hs
new file mode 100644
index 0000000..64dd9e3
--- /dev/null
+++ b/H61.hs
@@ -0,0 +1,5 @@
+import Tree
+
+countLeaves Empty = 0
+countLeaves (Branch _ Empty Empty) = 1
+countLeaves (Branch _ t1 t2) = countLeaves t1 + countLeaves t2