“…Since the serial number of tasks is decided according to the non-decreasing order of the release times, all tasks allocated to the same crane can be performed in accordance with the serial number. Taking the code {2,1,3,2,2,1,2,3,3,1,2} as an example, when 11 tasks are assigned to 3 cranes, task (2,6,10) are allocated to crane 1, tasks (1,4,5,7,11) to crane 2, and task (3,8,9) to crane 3. The key to obtain a feasible solution is to decode the chromosome with priority propagation based collision avoidance mechanism.…”