# Remove equal adjacent elements
#
# Example input: [1, 2, 2, 3]
# Example output: [1, 2, 3]
def remove_adjacent(lst):
    return

# Merge two sorted lists in one sorted list in linear time
#
# Example input: [2, 4, 6], [1, 3, 5]
# Example output: [1, 2, 3, 4, 5, 6]
def linear_merge(lst1, lst2):
    return
