Find the largest subtree sum in a binary tree Find the maximum sum of nodes in a binary tree such that no two are adjacent Print all paths in a binary tree with a given sum Find the distance between two nodes in
The use ofglobal variablesis highly discourages in DSA interviews but as Python programmers don't have leverage ofpass by reference, many problems make use ofnonlocal variablesin nested Python function and recursive implementations. For reference:105. Construct Binary Tree from Preorder and Inord...
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even though we do not need to write code to handle when an array fills up its memory space, and we do not have to shift elements up or down in memory when an element is removed or inserted, these things still happen in the background and can cause problems in time critical applications...
The main goal of using DSA is to solve problems effectively and efficiently. How do you assess if your program is efficient? This is where complexities come in, and there are two types:Time Complexity: It measures the time needed to execute the code. Space Complexity: It indicates the ...
Note: All the above code is written in Python language. Recursion: From Wikipedia, In computer science, recursion is a method of solving a computational problem where the solution depends on solutions to smaller instances of the same problem. Recursion solves such recursive problems by using funct...
DSA plays a crucial role in software development, enabling efficient and scalable solutions for a wide range of problems.Key components:Data structures: Definition: Specialized formats for organizing and storing data to facilitate efficient operations. Purpose: Enable the effective management and retrieval...
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Negative Cycles in Shortest Path ProblemsFinding the shortest paths becomes impossible if a graph has negative cycles.Having a negative cycle means that there is a path where you can go in circles, and the edges that make up this circle have a total path weight that is negative....
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