Skip to content
Related Articles

Related Articles

Improve Article

Paytm Interview Experience | Set 14 (For Senior android Developer)

  • Difficulty Level : Medium
  • Last Updated : 29 May, 2019

Senior android Developer

  • Coding Round:
    1. Spirally traversing a matrix
    2. Longest Increasing Subsequence
  • First Round:
    1. find “longest line” of 1’s in array. Hoizontal and Vertical. Array is made only of 0’s and 1’s, and looks for example like this:
      4 4
      0 1 1 1
      0 1 0 1
      0 1 1 0
      1 0 1 0

    2. 2D Array is made only of 0’s and 1’s, you have to find number of island.
  • Second Round:
    1. Some Android question / Some java questions basic
    2. Sort an array of 0s, 1s and 2s
    3. Check if string are palindrome.
  • Third Round:
    1. Design the architecture of Paytm market place.
    2. Some random questions on Java like threading, collections, hashmap etc.
    3. Why HashTable not allow NULL but Hashmap allow.
    4. Array question of finding mission number. etc
  • Fourth Round:
    1. Singleton patterns
    2. Design your own Arraylist.
    3. Sorting of linkedlist.
    4. Program for array rotation
    5. LRU cache
    6. Recycler view vs list view.
    7. Services, Fragment, app optimization, retainInstance() in fragment, Asynctaskrotation problem etc
    8. Graph traversal for circular loop example.
    9. Find max of Stack optimize way.

If you like GeeksforGeeks and would like to contribute, you can also write an article and mail your article to See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above

Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more, please refer Complete Interview Preparation Course. In case you are prepared, test your skills using TCS, Wipro, Amazon. GoogleE-Litmus and Microsoft Test Serieses.

My Personal Notes arrow_drop_up
Recommended Articles
Page :