Interview Problems

About the Interview Problems category (1)
Website Workshop Contest (1)
Merge k sorted lists and store it in 1st list. Do not use any other extra space (4)
Split overlapping ranges into all unique ranges (4)
Can become a substring? (3)
Find max no of meeting rooms required given a list scheduled meetings (2)
Ray Tracing Game (6)
Four Key Keyboard (1)
First Non-Repeating Number (1)
Design a job portal with support for queries (1)