# Amazon Interview Experience | Set 233 (1 Year Experienced for SDE-1)

• Difficulty Level : Medium
• Last Updated : 02 Jul, 2019
I recently had interviews with Amazon.com, Bangalore.
Here’s my interview experienceCoding round (1 hour):
1. Find minimum number of coins that make a given value
Given a value V, if we want to make change for V cents, and we have infinite supply of each of C = { C1, C2, .. , Cm} valued coins, what is the minimum number of coins to make the change?
2. Suppose you have given two strings S1 and S2. Find out if S1 is substring of S2. If S1 is present in S2 return starting index of S1 in S2 and if not present return -1.

Face to Face Round 1 (Technical ~ 1 hour)
2. Valid Substring

Face to Face Round 2 (Technical ~ 1 hour)
1. Special Stack
2. Bottom View of Binary Tree
3. Subset Sum Problem >partition-problem/

Telephonic Round 3 (Hiring Manager ~ 45 minutes)
2. Why do you want to change your current company? Why Amazon?
3. Find a pair with given target in BST

Telephonic Round 4 (Bar raiser ~ 1.30 hour)

1. He gave a brief description about him.
3. Why do you want to change your current company? Why Amazon?
4. How Have You Gone Above and Beyond in Your Work?