fix py decrement missing and in C move j-- to correct spot

c/insertion-sort.c

@@ -9,8 +9,10 @@ void insertion_sort(int arr[], int len) {
         while (j >= 0) {
             if (temp < arr[j]) {
                 arr[j + 1] = arr[j];
+                j--;
+            } else {
+                break;
             }
-            j--;
         }
         arr[j + 1] = temp;
     }
@@ -25,7 +27,7 @@ void print_array(int arr[], int len) {
 }
 
 int main() {
-    int arr[10] = {10, 9, 8, 7, 6, 5, 4, 3, 2, 1};
+    int arr[10] = {10, 9, 8, 7, 6, 5, 4, 3, 1, 2};
     insertion_sort(arr, 10);
     print_array(arr, 10);
 }