Priority queue: Difference between revisions
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(→{{header|C sharp}}: .NET 6 version) |
(Add SenseTalk implementation) |
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def compare(t1:Task, t2:Task):Int=t2.prio compare t1.prio |
def compare(t1:Task, t2:Task):Int=t2.prio compare t1.prio |
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}</lang> |
}</lang> |
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=={{header|SenseTalk}}== |
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We use New to create an object instance -- in this case (for simplicity) based on the script itself, which is named PriorityQueue. The Tell command or dot notation are then used to send messages directly to that object. |
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<lang sensetalk> |
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// PriorityQueue.script |
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set Tasks to a new PriorityQueue |
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tell Tasks to add 3,"Clear drains" |
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tell Tasks to add 4,"Feed cat" |
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tell Tasks to add 5,"Make tea" |
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tell Tasks to add 1,"Solve RC tasks" |
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tell Tasks to add 2,"Tax return" |
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put "Initial tasks:" |
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put Tasks.report & return |
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put Tasks.getTop into topItem |
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put "Top priority: " & topItem & return |
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put "Remaining:" & return & Tasks.report |
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------ |
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properties |
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queue:[] |
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end properties |
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to add newPriority, newTask |
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repeat with each item of my queue |
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if newPriority comes before the priority of it then |
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insert {priority:newPriority, task:newTask} before item the counter of my queue |
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return |
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end if |
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end repeat |
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insert {priority:newPriority, task:newTask} into my queue -- add at end if last priority |
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end add |
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to getTop |
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pull my queue into firstItem |
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return firstItem |
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end getTop |
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to report |
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return (priority of each && task of each for each item of my queue) joined by return |
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end report |
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</lang> |
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{{out}} |
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<pre> |
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Initial tasks: |
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1 Solve RC tasks |
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2 Tax return |
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3 Clear drains |
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4 Feed cat |
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5 Make tea |
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Top priority: {priority:1, task:"Solve RC tasks"} |
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Remaining: |
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2 Tax return |
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3 Clear drains |
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4 Feed cat |
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5 Make tea |
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</pre> |
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=={{header|Sidef}}== |
=={{header|Sidef}}== |
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