BST Practice Question
Duration: 1 min
This video lesson is available to enrolled students.
AI Summary
An AI-generated summary of this video lecture.
The video features an educational lecture by Sanchit Jain from Knowledge Gate, focusing on a specific problem in data structures related to Binary Search Trees. The central question displayed prominently on the screen asks, 'Q how many distinct BST can be constructed with 3 distinct keys?' The instructor presents four multiple-choice options labeled a) 4, b) 5, c) 6, and d) 9. Throughout the clip, he discusses the problem. He concludes by identifying the correct answer among the choices provided.
Chapters
0:00 – 0:36 00:00-00:36
The video opens with the question 'Q how many distinct BST can be constructed with 3 distinct keys?' visible at the top of the slide. The instructor, Sanchit Jain, is seated in the bottom right corner, wearing a white t-shirt with the 'KNOWLEDGEGATE' logo. He gestures with his hand, holding a pen, while explaining the concept to the audience. As he speaks, he uses a blue digital pen to draw a checkmark next to option 'b) 5', clearly indicating it is the correct choice. The logo 'KNOWLEDGEGATE' is visible in the background. The instructor confirms the answer is 5, solidifying the learning point for the students.
This short segment serves as a direct problem-solving example for students preparing for exams like GATE. It reinforces the concept that the number of unique BSTs for n nodes is given by the nth Catalan number. For n=3, the calculation yields 5, which matches the selected option. This visual confirmation helps students verify their understanding of tree structures and combinatorial counting in computer science.