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IT Project Management Calculator

This is a console program to solve project management problems easily.

Disclaimer

I'm not resposible for any incorrect output :3 I think it is logically correct and I tested it on a bunch of examples.

Input Format

  1. Number of tasks.
  2. Name and duration pairs of the tasks.
  3. Number of predecessors + list of predecessors, in the same order the tasks where entered.

Example

5
A 3 B 4 C 2 D 3 E 1
0
0
1 A
2 A B
1 B

This input represents 5 tasks:

  • A, duration of 3, 0 predecessors.
  • B, duration of 4, 0 predecessors.
  • C, duration of 2, 1 predecessor, A.
  • D, duration of 3, 2 predecessors, A and B.
  • E, duration of 1, 1 predecessor, B.

Output Format

The output comes as a line for each task, with each line containing:

  • Name.
  • Duration.
  • Early Start.
  • Early Finish.
  • Late Start.
  • Late Finish.
  • Total Slack Time.
  • Free Slack Time. If the line has a *, this indicates a critical task.

Example

 {name='A', duration=3, earlyStart=0, earlyFinish=3, lateStart=1, lateFinish=4, totalSlackTime=1, freeSlackTime=0}
*{name='B', duration=4, earlyStart=0, earlyFinish=4, lateStart=0, lateFinish=4, totalSlackTime=0, freeSlackTime=0}
 {name='C', duration=2, earlyStart=3, earlyFinish=5, lateStart=5, lateFinish=7, totalSlackTime=2, freeSlackTime=2}
*{name='D', duration=3, earlyStart=4, earlyFinish=7, lateStart=4, lateFinish=7, totalSlackTime=0, freeSlackTime=0}
 {name='E', duration=1, earlyStart=4, earlyFinish=5, lateStart=6, lateFinish=7, totalSlackTime=2, freeSlackTime=2}

B and D are the critical tasks.