question- https://www.interviewbit.com/problems/merge-overlapping-intervals/
my solution - https://ide.geeksforgeeks.org/xylphZjQjv
test case - 11 13 81 15 87 23 76 41 61 53 83 23 76 44 60 1 46 36 54 48 64 21 29
Wrong output while submitting but correct output on custum input on same test case
solved, 1 thing missed, no need to review