InMobi Interview Questions and Answers

Polyfill of promise is a code that adds support for promises in older browsers.

• Polyfill is used to fill in the gaps in browser support for certain features.

• For promises, a polyfill can be used to provide support in older browsers that do not natively support promises.

• Popular promise polyfills include 'es6-promise' and 'bluebird'.

Types of encryption include symmetric encryption, asymmetric encryption, and hashing.

• Symmetric encryption: Uses the same key for both encryption and decryption, examples include AES and DES.

• Asymmetric encryption: Uses a pair of public and private keys for encryption and decryption, examples include RSA and ECC.

• Hashing: Converts data into a fixed-size string of bytes, examples include MD5 and SHA.

Implement a stack that supports push, pop, and retrieving the most frequent element efficiently.

• Use a hash map to count frequencies of elements.

• Maintain a stack for each frequency level to store elements.

• When pushing, update the frequency and push to the corresponding stack.

• When popping, retrieve from the highest frequency stack and update counts.

• Example: Push(5), Push(7), Push(5) results in frequency {5: 2, 7: 1}...read more

Calculate the minimum number of platforms needed at a train station based on arrival and departure times.

• Sort arrival and departure times.

• Use a two-pointer technique to track platforms needed.

• Increment platform count on arrival and decrement on departure.

• Example: For arrivals [10:00, 10:15] and departures [10:30, 10:45], 1 platform is needed.

To take the Rajasthani Shoe business from online to offline, a multi-channel approach can be adopted.

• Establish physical stores in key locations to increase accessibility and visibility.

• Collaborate with local retailers or distributors to expand the offline presence.

• Organize pop-up shops or participate in trade shows to showcase the products.

• Implement effective marketing strategies to create awareness about the offl...read more

The sort order algorithm for an e-commerce search page determines the arrangement of products based on relevance to the search query.

• The algorithm should consider factors like product popularity, customer ratings, and relevance to the search query.

• It should prioritize products that closely match the search query and have higher ratings or popularity.

• The algorithm can also take into account other factors like price...read more