Re-namespacing a bit to clear out some fairly old stuff from the top level

oldstuff/PracticingAlgorithms/src/Makefile

@@ -0,0 +1,8 @@
+all: $(BINDIR)/insertion-sort
+
+
+$(BINDIR)/insertion-sort: insertion-sort.c
+	gcc -o $@ $(CFLAGS) $^
+
+
+.PHONY: all

oldstuff/PracticingAlgorithms/src/insertion-sort.c

@@ -0,0 +1,38 @@
+#include <stdio.h>
+
+void insertion_sort(int * a, int len_a);
+
+
+int
+main(int argc, char ** argv)
+{
+    int i;
+    int l[] = {1, 4, 8, 9, 2, 3};
+
+    insertion_sort(l, 6);
+
+    for (i = 0; i < 6; i++) {
+        printf("%d\n", l[i]);
+    }
+}
+
+
+void
+insertion_sort(int * a, int len_a)
+{
+    int i, j, key;
+
+    for (j = 1; j < len_a; j++) {
+        key = a[j];
+        i = j - 1;
+        while ((i >= 0) && (a[i] > key)) {
+            a[i + 1] = a[i];
+            i = i - 1;
+        }
+        a[i + 1] = key;
+    }
+}
+
+
+/* vim:filetype=c
+ */