Fix typos (#191)

sorting_searching/insertion_sort/insertion_sort_solution.ipynb

@@ -72,7 +72,7 @@
     "        * Break\n",
     "\n",
     "Complexity:\n",
-    "* Time: O(n^2) avarage, worst.  O(1) best if input is already sorted\n",
+    "* Time: O(n^2) average, worst.  O(1) best if input is already sorted\n",
     "* Space: O(1) for the iterative solution\n",
     "\n",
     "Misc: \n",

sorting_searching/merge_sort/merge_sort_solution.ipynb

@@ -69,7 +69,7 @@
     "* Merge split arrays\n",
     "    * Using two pointers, one for each half starting at index 0\n",
     "        * Add the smaller element to the result array\n",
-    "        * Inrement pointer where smaller element exists\n",
+    "        * Increment pointer where smaller element exists\n",
     "    * Copy remaining elements to the result array\n",
     "    * Return result array\n",
     "\n",

sorting_searching/selection_sort/selection_sort_challenge.ipynb

@@ -34,7 +34,7 @@
    "source": [
     "## Constraints\n",
     "\n",
-    "* Is a naiive solution sufficient (ie not stable, not based on a heap)?\n",
+    "* Is a naive solution sufficient (ie not stable, not based on a heap)?\n",
     "    * Yes\n",
     "* Are duplicates allowed?\n",
     "    * Yes\n",

sorting_searching/selection_sort/selection_sort_solution.ipynb

@@ -33,7 +33,7 @@
    "source": [
     "## Constraints\n",
     "\n",
-    "* Is a naiive solution sufficient (ie not stable, not based on a heap)?\n",
+    "* Is a naive solution sufficient (ie not stable, not based on a heap)?\n",
     "    * Yes\n",
     "* Are duplicates allowed?\n",
     "    * Yes\n",