Read e-book online A collection of Tree Programming Interview Questions Solved PDF

By Dr Antonio Gulli

ISBN-10: 1499749007

ISBN-13: 9781499749007

Programming interviews in C++ approximately bushes

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End(); it++) std::cout << " v=" << *it; std::cout << std::endl; } else { printAllPaths(root->left, path); printAllPaths(root->right, path); } } Complexity Time complexity is and space complexity is . 9 Verifying if a path sum is equal to an integer Solution The idea is to subtract the current value from the given sum, while visiting recursively the tree. root->right)) return (hasSum(root->left, remainingSum) || hasSum(root->right, remainingSum)); else if (root->left) return hasSum(root->left, remainingSum); else return hasSum(root->right, remainingSum); } } Complexity Time complexity is and space complexity is .

31 Implementing a suffix tree Solution A Suffix Tree (also known as Pat Tree) is a tree containing all the suffixes of a given string . The construction of a suffix tree takes linear time and also linear space (although with very large constants). Once the suffix three is built, it is possible to solve a myriad of problems on textual strings[1] such as: Check a string , if length m is a substring of in time Find the longest common substrings of strings and in time The list is very long and cannot be reported here.

Swap(nextLevel); } } } Complexity Time complexity is and space complexity is . 13 Printing the lowest common ancestor (LCA) Solution A solution can be computed recursively. The lowest common ancestor for two nodes and is if the root is Otherwise the LCA is (respectively) if the root is (respectively). Those are the base cases. Then the solution is recursively computed for the left and for the right subtree. After returning from recursion, if both left and right are available, then the LCA is the current root, otherwise it is left, if this is available (respectively right, if this is available).

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A collection of Tree Programming Interview Questions Solved in C++ by Dr Antonio Gulli


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