AVL Tree vs Red-Black Tree

Both AVL Trees and Red-Black Trees keep themselves balanced so that searching stays fast. The difference is in how strict they are — AVL Trees stay more tightly balanced, which makes lookups slightly faster but requires more work when adding or removing values. Red-Black Trees are a bit more relaxed, so insertions and deletions are quicker. Try inserting the same values into both and see how each one balances itself. For a deeper look at how and why they differ, check out this article.