diff --git a/insertion.py b/insertion.py old mode 100755 new mode 100644 diff --git a/merge.py b/merge.py old mode 100755 new mode 100644 diff --git a/numgen.py b/numgen.py old mode 100755 new mode 100644 diff --git a/sorting.py b/sorting.py old mode 100755 new mode 100644