handle multiple activities with no successor
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82befabe64
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@ -70,13 +70,7 @@ func (g *projectNetwork) forwardPass(toposort []*activity) {
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// backwardPass computes the late times and slack for each activity using the
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// early times
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func (g *projectNetwork) backwardPass(toposort []*activity) {
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n := len(toposort)
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end := toposort[n-1]
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end.lateFinish = end.earlyFinish
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end.lateStart = end.lateFinish - end.duration
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for i := n - 2; i >= 0; i-- {
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for i := len(toposort) - 1; i >= 0; i-- {
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a := toposort[i]
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g.setLateTimes(a)
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}
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@ -102,6 +96,10 @@ func (g *projectNetwork) setLateTimes(a *activity) {
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s := successors.Node().(*activity)
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lf = math.Min(lf, s.lateStart)
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}
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if lf == math.Inf(1) {
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lf = a.earlyFinish
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}
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a.lateFinish = lf
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a.lateStart = a.lateFinish - a.duration
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a.slack = a.lateFinish - a.earlyFinish
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