Added 0101-0200.md

Added 100 basic questions of gfg

Author: agastya3636

dsa-problems/gfg-problems/basic/0001-0100.md

@@ -1,7 +1,7 @@
 ---
 id: 0001-0100
 title: GFG basic problems 0001-0100
-sidebar_label: problems
+sidebar_label: 0001-0100
 keywords:
   - gfg problems
   - gfg problems basic