Amazon Software Development Engineer (SDE) Intern interview questions

Describe yourself, biggest technical challenge you have faced so far

1 technical question and 2 behavioral questions. The technical part was a graph question where you needed to count the number of islands in a 2 d array. The behavioral part was: 1. Tell me about a time when your teammate was hesitant to accept help from you 2. Tell me about a time when you needed to make a decision without consulting anyone/