American Broadcasting Company Abacus Teacher Interview Questions and Answers

Its very hard n i cleared

Its a scenario based questions

Coding test coding test coding test finding test costing test

Q1. Find swapped nodes in bst
Ans. 
Swapped nodes in a binary search tree need to be identified.
• In-order traversal of the BST can be used to identify swapped nodes.

• If a node is smaller than its previous node, it is a swapped node.

• If two swapped nodes are identified, swap their values to restore the BST.

• If only one swapped node is identified, swap its value with its successor or predecessor.
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Q2. Area of trapping rain water
Ans. 
The area of trapping rainwater refers to the surface area where rainwater is collected and stored.
• The area of trapping rainwater can be a rooftop, a garden, or a catchment basin.

• The size of the area will determine the amount of rainwater that can be collected.

• The area should be free of debris and pollutants to ensure the quality of the collected rainwater.

• The collected rainwater can be used for irrigation, washing, and
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