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Merge pull request #4 from shadowcodex/queues
Queues
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‎.vscode/settings.json‎

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{
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"prettier.printWidth": 120,
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"prettier.singleQuote": true,
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"prettier.trailingComma": "es5",
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"editor.formatOnSave": true
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}

‎benchmark/README.md‎

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# Benchmarks
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These are custom ran benchmarks testing implementations timing on insertion, deletion, and data fetching.
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## Stacks
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```csharp
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┌──────────────────┬────────────────────┬─────────────────────┐
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│ Stack Operation │ 100,000 items │ 1,000,000 items │
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├──────────────────┼────────────────────┼─────────────────────┤
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│ LinkedStack Push │ + 0s 15ms 701111ns │ + 0s 103ms 578697ns │
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├──────────────────┼────────────────────┼─────────────────────┤
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│ UArrayStack Push │ + 0s 33ms 674506ns │ + 0s 44ms 682102ns │
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├──────────────────┼────────────────────┼─────────────────────┤
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│ BArrayStack Push │ + 0s 3ms 318560ns │ + 0s 13ms 455307ns │
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├──────────────────┼────────────────────┼─────────────────────┤
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│ LinkedStack Top │ + 0s 2ms 589174ns │ + 0s 16ms 513144ns │
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├──────────────────┼────────────────────┼─────────────────────┤
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│ UArrayStack Top │ + 0s 3ms 367356ns │ + 0s 16ms 241029ns │
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├──────────────────┼────────────────────┼─────────────────────┤
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│ BArrayStack Top │ + 0s 3ms 168186ns │ + 0s 14ms 461727ns │
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├──────────────────┼────────────────────┼─────────────────────┤
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│ LinkedStack Pop │ + 0s 5ms 66436ns │ + 0s 28ms 798899ns │
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├──────────────────┼────────────────────┼─────────────────────┤
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│ UArrayStack Pop │ + 0s 3ms 528070ns │ + 0s 3ms 528070ns │
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├──────────────────┼────────────────────┼─────────────────────┤
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│ BArrayStack Pop │ + 0s 2ms 697348ns │ + 0s 2ms 697348ns │
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└──────────────────┴────────────────────┴─────────────────────┘
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```
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## Queues
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```csharp
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┌────────────────────────┬─────────────────────┬───────────────────────┐
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│ Queue Operation │ 100,000 items │ 1,000,000 items │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ LinkedQueue Enqueue │ + 0s 30ms 912807ns │ + 0s 152ms 813615ns │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ UArrayQueue Enqueue │ + 0s 5ms 971997ns │ + 0s 44ms 899352ns │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ BFltArrayQueue Enqueue │ + 0s 3ms 824733ns │ + 0s 18ms 102334ns │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ BFixArrayQueue Enqueue │ + 0s 8ms 141539ns │ + 0s 17ms 4255ns │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ LinkedQueue Peek │ + 0s 2ms 939700ns │ + 0s 14ms 605871ns │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ UArrayQueue Peek │ + 0s 2ms 551683ns │ + 0s 17ms 84358ns │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ BFltArrayQueue Peek │ + 0s 2ms 924676ns │ + 0s 18ms 769628ns │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ BFixArrayQueue Peek │ + 0s 2ms 275064ns │ + 0s 19ms 66396ns │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ LinkedQueue Dequeue │ + 0s 4ms 498343ns │ + 0s 17ms 900240ns │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ UArrayQueue Dequeue │ + 1s 772ms 610030ns │ + 167s 551ms 767324ns │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ BFltArrayQueue Dequeue │ + 0s 3ms 678644ns │ + 0s 19ms 273733ns │
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├────────────────────────┼─────────────────────┼───────────────────────┤
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│ BFixArrayQueue Dequeue │ + 7s 16ms 659904ns │ + 782s 431ms 330080ns │
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└────────────────────────┴─────────────────────┴───────────────────────┘
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```

‎benchmark/queues.js‎

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let { queues } = require('./../index');
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let ptime = require('quick-ptime');
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const Table = require('cli-table');
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var ProgressBar = require('progress');
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let bar;
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// setup stacks
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let queue = new queues.Queue();
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let arrayQueue = new queues.ArrayQueue();
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// enqueue 100,000 items into the queue
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ptime.setTime('queue100000');
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for(let i = 0; i < 100000; i++) {
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queue.enqueue('value');
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}
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console.log("Enqueue 100,000 Queue timing:", ptime.elapsedTime('queue100000').formatted);
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ptime.setTime('arrayqueue100000');
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for(let i = 0; i < 100000; i++) {
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arrayQueue.enqueue('value');
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}
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console.log("Enqueue 100,000 Array Queue timing:", ptime.elapsedTime('arrayqueue100000').formatted);
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// dequeue 100,000 items into the queue
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ptime.setTime('dqueue100000');
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for(let i = 0; i < 100000; i++) {
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queue.dequeue();
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}
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console.log("Dequeue 100,000 Queue timing:", ptime.elapsedTime('dqueue100000').formatted);
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ptime.setTime('darrayqueue100000');
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for(let i = 0; i < 100000; i++) {
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arrayQueue.dequeue();
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}
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console.log("Dequeue 100,000 Array Queue timing:", ptime.elapsedTime('darrayqueue100000').formatted);
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const testStandard = async (name, adt, count) => {
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const iADT = new adt(count);
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bar.tick({
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token1: `${name} adt setup`,
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});
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results = [];
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results.push(
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(await ptime.runFunctionRounds(`${name} enqueue ${count}`, iADT.enqueue.bind(iADT), [1], count, true)).formatted
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);
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bar.tick({
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token1: `${name} enqueue ${count}`,
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});
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results.push(
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(await ptime.runFunctionRounds(`${name} peek ${count}`, iADT.peek.bind(iADT), [1], count, true)).formatted
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);
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bar.tick({
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token1: `${name} peek ${count}`,
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});
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results.push(
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(await ptime.runFunctionRounds(`${name} dequeue ${count}`, iADT.dequeue.bind(iADT), [1], count, true)).formatted
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);
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bar.tick({
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token1: `${name} dequeue ${count}`,
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});
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return results;
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};
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const run = async () => {
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bar = new ProgressBar(':bar Last Completed :token1 :percent :elapseds total, completes in :etas', { total: 34 });
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bar.tick({
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token1: 'progress bar',
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});
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let results = {};
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results['LinkedQueue Enqueue'] = [];
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results['UArrayQueue Enqueue'] = [];
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results['BFltArrayQueue Enqueue'] = [];
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results['BFixArrayQueue Enqueue'] = [];
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results['LinkedQueue Peek'] = [];
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results['UArrayQueue Peek'] = [];
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results['BFltArrayQueue Peek'] = [];
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results['BFixArrayQueue Peek'] = [];
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results['LinkedQueue Dequeue'] = [];
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results['UArrayQueue Dequeue'] = [];
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results['BFltArrayQueue Dequeue'] = [];
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results['BFixArrayQueue Dequeue'] = [];
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bar.tick({
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token1: 'result sets setup',
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});
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const lQueue100000 = await testStandard('LinkedQueue', queues.LinkedQueue, 100000);
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const lQueue1000000 = await testStandard('LinkedQueue', queues.LinkedQueue, 1000000);
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// const lQueue10000000 = await testStandard('LinkedQueue', queues.LinkedQueue, 10000000);
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results['LinkedQueue Enqueue'].push(lQueue100000[0], lQueue1000000[0]);
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results['LinkedQueue Peek'].push(lQueue100000[1], lQueue1000000[1]);
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results['LinkedQueue Dequeue'].push(lQueue100000[2], lQueue1000000[2]);
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const bfltQueue100000 = await testStandard('BFltArrayQueue', queues.BFltArrayQueue, 100000);
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const bfltQueue1000000 = await testStandard('BFltArrayQueue', queues.BFltArrayQueue, 1000000);
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// const bfltQueue10000000 = await testStandard('BFltArrayQueue', queues.BFltArrayQueue, 10000000);
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results['BFltArrayQueue Enqueue'].push(bfltQueue100000[0], bfltQueue1000000[0]);
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results['BFltArrayQueue Peek'].push(bfltQueue100000[1], bfltQueue1000000[1]);
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results['BFltArrayQueue Dequeue'].push(bfltQueue100000[2], bfltQueue1000000[2]);
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const uQueue100000 = await testStandard('UArrayQueue', queues.UArrayQueue, 100000);
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const uQueue1000000 = await testStandard('UArrayQueue', queues.UArrayQueue, 1000000);
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// const uQueue10000000 = await testStandard('UArrayQueue', queues.UArrayQueue, 10000000);
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results['UArrayQueue Enqueue'].push(uQueue100000[0], uQueue1000000[0]);
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results['UArrayQueue Peek'].push(uQueue100000[1], uQueue1000000[1]);
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results['UArrayQueue Dequeue'].push(uQueue100000[2], uQueue1000000[2]);
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const bfixQueue100000 = await testStandard('BFixArrayQueue', queues.BFixArrayQueue, 100000);
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const bfixQueue1000000 = await testStandard('BFixArrayQueue', queues.BFixArrayQueue, 1000000);
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// const bfixQueue10000000 = await testStandard('BFixArrayQueue', queues.BFixArrayQueue, 10000000);
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results['BFixArrayQueue Enqueue'].push(bfixQueue100000[0], bfixQueue1000000[0]);
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results['BFixArrayQueue Peek'].push(bfixQueue100000[1], bfixQueue1000000[1]);
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results['BFixArrayQueue Dequeue'].push(bfixQueue100000[2], bfixQueue1000000[2]);
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let items = [];
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let keys = Object.keys(results);
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for (let i = 0; i < keys.length; i++) {
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let item = {};
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item[keys[i]] = results[keys[i]];
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items.push(item);
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}
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return items;
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};
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run().then(value => {
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const table = new Table({
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head: ['Queue Operation', '100,000 items', '1,000,000 items'],
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});
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table.push(...value);
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console.log('\n');
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console.log(table.toString());
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});

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