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Caterpillar Inc DGM Interview Questions and Answers
Caterpillar Inc DGM Interview Experiences
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Anonymous
HCL Healthcare
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Selected
I applied via LinkedIn and was interviewed before Sep 2023. There were 2 interview rounds.
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I applied via Approached by Company and was interviewed before May 2023. There were 2 interview rounds.
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I applied via LinkedIn and was interviewed in Apr 2022. There were 2 interview rounds.
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I applied via Company Website and was interviewed in Nov 2024. There was 1 interview round.
(2 Questions)
- Q1. Can you explain the difference between a stack and a queue and provide a real-world example where each would be used.
- Ans.
A stack is a Last In First Out (LIFO) data structure, while a queue is a First In First Out (FIFO) data structure.
Stack: LIFO - Last In First Out. Example: browser history where the last page visited is the first to be accessed.
Queue: FIFO - First In First Out. Example: a line at a grocery store where the first person in line is the first to be served.
- Q2. Given an array of integers, write a function to find the two numbers that add up to a specific target. How would you optimize this solution?
- Ans.
Function to find two numbers in array that add up to target. Optimize solution.
Use a hash map to store each number and its index as you iterate through the array.
For each number, check if the difference between the target and the number exists in the hash map.
Return the indices of the two numbers that add up to the target.
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Selected
I applied via Campus Placement and was interviewed before Nov 2022. There were 5 interview rounds.
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