Wells Fargo Lead Software Engineer Interview Questions and Answers

Q1. Internal working of HashMap
Ans. 
HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where it will be stored.

• If multiple keys hash to the same index, a linked list is used to handle collisions.

• HashMap allows null keys and values, but only one ...read more
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Q2. Difference between ArrayList and LinkedList
Ans. 
ArrayList is implemented as a resizable array, LinkedList is implemented as a doubly linked list.
• ArrayList provides fast random access, LinkedList provides fast insertion and deletion.

• ArrayList uses more memory as it needs to allocate a fixed-size array, LinkedList uses more memory for storing references to next and previous elements.

• Example: ArrayList is suitable for scenarios where random access is frequent, LinkedLi...read more
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45 minutes, leetcode medium

A Codeing env called as karat interview. Post which you will have 2 technical interviews and barraiser interview.

Q1. 2 technicals with codeshare env. 3 to 4 problems in 2 rounds
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Q1. Bar raiser interview
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Q1. General discussion on perks n package
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