Delhivery Warehouse & Logistics Executive Interview Questions and Answers

Q1. Having Past 5 years Experience with DHL warehousing
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Q2. Confused relating this question
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Q1. Previous Experience
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Q2. Accounts related questions
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Nothing much just basic aptitude questions

Q1. Basic introduction about ourselves and family members
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Q2. About company and about the job role
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Round duration - 95 minutes
Round difficulty - Medium

The 1st round was online coding + MCQ round. It had 3 sections in total to be solved in 95 mins.
Next comes the technical interview. 
The technical interview lasted for about 45 minutes. It started with a basic introduction. Then, she framed some questions from my resume and projects which I have mentioned. Questions were mainly from Data structure, OS, DBMS, SQL. She told me to rate my data structure skill on a scale of 1 to 5.
My interview was at 10:30 am and the interviewer was really nice. She was helping me wherever I was getting stuck.

Q1. 
Fourth Largest Element in the Array
Given an array consisting of integers, your task is to determine the fourth largest element in the array. If the array does not contain at least four distinct elements,...read more
Ans. 
Find the fourth largest element in an array, return -2147483648 if not enough distinct elements.
• Sort the array in descending order

• Return the fourth element if it exists, else return -2147483648
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Round duration - 45 minutes
Round difficulty - Medium

The technical interview lasted for about 45 minutes. It started with a basic introduction. Then, she framed some questions from my resume and projects which I have mentioned. Questions were mainly from Data structure, OS, DBMS, SQL. She told me to rate my data structure skill on a scale of 1 to 5.

Q1. 
Sort 0s, 1s, and 2s Problem Statement
You are provided with an integer array/list ARR of size 'N' which consists solely of 0s, 1s, and 2s. Your task is to write a solution to sort this array/list.
Input:
...read more
Ans. 
Sort an array of 0s, 1s, and 2s in linear time with a single scan approach.
• Use three pointers to keep track of the positions of 0s, 1s, and 2s in the array.

• Iterate through the array once and swap elements based on their values and the pointers.

• After the single scan, the array will be sorted in place with 0s, 1s, and 2s in order.
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Q2. 
Remove Duplicates Problem Statement
You are given an array of integers. The task is to remove all duplicate elements and return the array while maintaining the order in which the elements were provided.
...read more
Ans. 
Remove duplicates from an array while maintaining order.
• Use a set to keep track of unique elements.

• Iterate through the array and add elements to the set if not already present.

• Convert the set back to an array to maintain order.
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Q3. Can you describe all the joins in SQL and illustrate them with a Venn diagram?
Ans. 
SQL joins are used to combine rows from two or more tables based on a related column between them.
• Inner Join: Returns rows when there is at least one match in both tables.

• Left Join: Returns all rows from the left table and the matched rows from the right table.

• Right Join: Returns all rows from the right table and the matched rows from the left table.

• Full Outer Join: Returns rows when there is a match in one of the tabl...read more
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Q4. 
Binary Tree Node Presence Problem
Determine if a node with a given integer value X exists in a specified binary tree.
Input:
The first line of each test case contains the binary tree nodes in level orde...read more
Ans. 
Check if a node with a given value exists in a binary tree.
• Traverse the binary tree using depth-first search (DFS) or breadth-first search (BFS) to search for the node with the given value.

• Use a recursive or iterative approach to implement the search algorithm.

• Return 'true' if the node with the given value is found, otherwise return 'false'.
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Q5. 
Shortest Path in an Unweighted Graph
The city of Ninjaland is represented as an unweighted graph with houses and roads. There are 'N' houses numbered 1 to 'N', connected by 'M' bidirectional roads. A road...read more
Ans. 
Find the shortest path in an unweighted graph from house 'S' to house 'T'.
• Use Breadth First Search (BFS) algorithm to find the shortest path in an unweighted graph.

• Create a queue to store the current house and its neighbors, and a visited set to keep track of visited houses.

• Start BFS from house 'S' and stop when reaching house 'T'.

• Return the path from 'S' to 'T' once 'T' is reached.

• If multiple shortest paths exist, ret
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Q1. My resume details questions
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Q2. My personal details
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