Insert into a Sorted List
Implement a function that inserts a value into a sorted list at the correct position using binary search.
Binary search
Return the index of target in a sorted list, or -1 if not present.
Tree inorder generator
Write a generator function that yields a binary tree's node values in inorder traversal.
Integer Square Root Floor
Implement a function that returns the greatest integer whose square is ≤ n, using only integer operations.
Count Set Bits
Implement a function that returns the number of set bits (1s) in the binary representation of a non-negative integer.
Gray Code Decode
Implement gray_decode(n) that converts an n-bit Gray code integer back to its standard binary value using XOR accumulation.
Compress Bits Run
Write a function that compresses a binary string by representing consecutive identical bits as a count-bit pair.
Sparse Number Check
Check if a non-negative integer is sparse, meaning its binary representation contains no adjacent 1 bits.
Binary Search Tree Class
Build a BinarySearchTree class and a sequence runner that executes a list of operations.
Binary Tree Inorder Traversal
Implement an inorder traversal function that returns node values in left-root-right order.
Preorder Traversal
Implement a function that returns the preorder traversal values of a binary tree.
Postorder Traversal
Implement a function that returns the postorder traversal of a binary tree as a list of node values.
Maximum depth of tree
Implement max_depth(root) to return the maximum depth of a binary tree.
Minimum Depth of Tree
Given a binary tree, compute the minimum depth from the root to the nearest leaf node.
Symmetric Tree Check
Write a function that checks whether a binary tree is symmetric (a mirror of itself).
Same Tree Check
Write a function that checks whether two binary trees are identical in structure and node values.
Insert into BST
Implement insertion into a Binary Search Tree while maintaining BST properties.
Showing 17 challenges · easy
Guide: free Python coding challenges
Practice Python by solving problems
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Challenges vs tutorials and quizzes
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