Select any group of cards to explore subgroups, or manually reorder cards using drag-and-drop and two-card swaps. Validates full sorted order and relative stability in real time with an undo stack.
Selected: 0
Total Moves: 0
Array Order: Unsorted
Order Stability: Preserved
Click cards to select or unselect a group · Select exactly 2 to swap · Drag to reorder
Click cards to select or unselect a group. Select exactly two to swap, or drag a card to reorder.