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SDE - Intern

Expedia Group

2 rounds | 3 Coding
problems

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Interview preparation journey

Preparation

Duration: 3 months

Topics: Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic Programming

Tip

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.

Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.

Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application process

Where: Referral

Eligibility: Above 7 CGPA

Resume tip

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.

Tip 2 : Every skill must be mentioned.

Tip 3 : Focus on skills, projects and experiences more

Interview rounds

01

Round

Easy

Video Call

Duration45 minutes

Interview date28 Aug 2021

Problems2

Number of ones in the smallest repunit

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Problem approach

Given a positive integer ‘N’ whose unit digit is 3. Find the number of 1's in the smallest repunit, which is divisible by the given number N. Every number whose unit digit is 3 has a repunit as its multiple. A repunit is a number that has only 1. It is of the form (10 * N – 1)/9.

Reverse String

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Problem approach

You are given a string ‘S’. You are also given ‘M’ integers in an array ‘A’. You perform ‘M’ operations on this string. The operations are given in an array ‘A’ of size ‘M’.

You perform the operations in the order they appear in the array ‘A’. In the ‘i’th operation, you reverse the substring of ‘S’ from the position ‘A[i]’ to ‘len(S)’ - ‘A[i]’ - 1 (0 based).

Your task is to find the stri...

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02

Round

Easy

Video Call

Duration45 minutes

Interview date28 Aug 2021

Problems1

Zigzag Binary Tree Traversal

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Problem approach

Given a binary tree, return the zigzag level order traversal of the nodes' values of the given tree. Zigzag traversal means starting from left to right, then right to left for the next level and then again left to right and so on in an alternate manner.

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