How to find first recurring or duplicate character in given String? [Solved]

[admin]

Good day guys, at the same time as surfing the internet for more than one weeks back, I come to recognise that this problem changed into asked on Google interviews, find the first recurring character in a given String. I don't know if it is proper but this looks like a completely simple coding trouble from Google's Interview standard. If it become indeed requested, then that man ought to were very fortunate. Anyway, I preferred this coding hassle and concept to write down approximately it, as it's a very good coding trouble to check applicants' facts structure and algorithms competencies as it's intricate. It's complicated as it's very smooth to make a screw up assuming just one ordinary individual in String, which you ought to avoid. Despite the fact that it become now not asked on Google, you'll doubtlessly discover this trouble on diverse startups, and other IT businesses like Infosys, TCS, Cognizant, Microsoft, and maybe Amazon.