# Easy

- [Middle Node](/algorithm-problems/algoexpert/easy/middle-node.md)
- [Evaluate Expression Tree](/algorithm-problems/algoexpert/easy/evaluate-expression-tree.md)
- [Insertion Sort](/algorithm-problems/algoexpert/easy/insertion-sort.md)
- [Semordnilap](/algorithm-problems/algoexpert/easy/semordnilap.md)
- [First Non Repeating Character](/algorithm-problems/algoexpert/easy/first-non-repeating-character.md)
- [Generate Document](/algorithm-problems/algoexpert/easy/generate-document.md)
- [Run Length Encoding](/algorithm-problems/algoexpert/easy/run-length-encoding.md)
- [Caesar Cipher Encryptor](/algorithm-problems/algoexpert/easy/caesar-cipher-encryptor.md)
- [Palindrome Check](/algorithm-problems/algoexpert/easy/palindrome-check.md)
- [Selection Sort](/algorithm-problems/algoexpert/easy/selection-sort.md)
- [Bubble Sort](/algorithm-problems/algoexpert/easy/bubble-sort.md)
- [Find Three Largest Sum](/algorithm-problems/algoexpert/easy/find-three-largest-sum.md)
- [Binary Search](/algorithm-problems/algoexpert/easy/binary-search.md)
- [Product Sum](/algorithm-problems/algoexpert/easy/product-sum.md)
- [Nth Fibonacci](/algorithm-problems/algoexpert/easy/nth-fibonacci.md)
- [Remove Duplicates From LinkedList](/algorithm-problems/algoexpert/easy/remove-duplicates-from-linkedlist.md)
- [Tandem Bicycle](/algorithm-problems/algoexpert/easy/tandem-bicycle.md)
- [Class Photos](/algorithm-problems/algoexpert/easy/class-photos.md)
- [Minimum Waiting Time](/algorithm-problems/algoexpert/easy/minimum-waiting-time.md)
- [Depth-first Search](/algorithm-problems/algoexpert/easy/depth-first-search.md)
- [Node Depths](/algorithm-problems/algoexpert/easy/node-depths.md)
- [Branch Sums](/algorithm-problems/algoexpert/easy/branch-sums.md)
- [Find Closest Value In Bst](/algorithm-problems/algoexpert/easy/find-closest-value-in-bst.md)
- [Non Constructible Change](/algorithm-problems/algoexpert/easy/non-constructible-change.md)
- [Tournament Winner](/algorithm-problems/algoexpert/easy/tournament-winner.md)
- [Sorted Squared Array](/algorithm-problems/algoexpert/easy/sorted-squared-array.md)
- [Validate Subsequences](/algorithm-problems/algoexpert/easy/validate-subsequences.md)
- [Two Number Sum](/algorithm-problems/algoexpert/easy/two-number-sum.md)