I applied via for the position via school's career fair. After a week, they sent me email to setup an on school campus interview. After two weeks, they sent a congratulation email saying that I passed the 1st round and they decided to moved me to Seattle for on-campus interviews. There were 4 interviews within one days, starting at 9:am and ending at 1:pm. They informed the results with offer the same day. Q1. Design an algorithm to create a puzzle Q2. Ordered binary tree Q3. Palidrome string Q4. Implement IndexOf() function