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Cadence Design Systems Senior Software Engineer Interview Questions and Answers

Updated 14 Aug 2024

Q1. check substring palindrome or not

Ans.

Check if a substring in an array of strings is a palindrome or not.

  • Iterate through each string in the array

  • For each string, check if any of its substrings are palindromes

  • Return true if a palindrome substring is found, false otherwise

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Q2. Reverse linked list recursively

Ans.

Reverse a linked list recursively

  • Create a recursive function to reverse the linked list

  • Pass the current node and its next node as parameters

  • Update the next pointer of the current node to point to the previous node

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Q3. Check if two stacks are equal

Ans.

Check if two stacks are equal by comparing each element in the stacks

  • Pop elements from both stacks and compare them one by one

  • If the sizes of the stacks are different, they are not equal

  • If any element in the stacks is different, they are not equal

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Q4. find shortest path in graph

Ans.

Use Dijkstra's algorithm to find the shortest path in a graph

  • Implement Dijkstra's algorithm to find the shortest path between two nodes in a graph

  • Maintain a priority queue to keep track of the shortest distance to each node

  • Update the shortest distance to each node as you traverse the graph

  • Track the path by storing the previous node for each node visited

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Q5. Add two linked list

Ans.

To add two linked lists, iterate through both lists simultaneously and add corresponding nodes, considering carry from previous addition.

  • Create a dummy node to hold the result.

  • Initialize current node to dummy node.

  • Iterate through both lists, adding values and carry from previous addition.

  • Move to next nodes in both lists.

  • Handle cases where one list is longer than the other.

  • Handle final carry if present.

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Q6. check tree is BST

Ans.

Check if a binary tree is a Binary Search Tree (BST)

  • Perform an in-order traversal of the tree and check if the resulting array is sorted

  • Keep track of the previous node value during traversal to compare with the current node value

  • Ensure that each node's value is greater than the previous node's value in the in-order traversal

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