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279 lines
6.6 KiB
Go
279 lines
6.6 KiB
Go
// Copyright (c) 2021, Aryan Ahadinia. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package arrayqueue
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import (
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"fmt"
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"testing"
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)
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func TestQueueEnqueue(t *testing.T) {
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queue := New()
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if actualValue := queue.Empty(); actualValue != true {
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t.Errorf("Got %v expected %v", actualValue, true)
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}
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queue.Enqueue(1)
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queue.Enqueue(2)
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queue.Enqueue(3)
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if actualValue := queue.Values(); actualValue[0].(int) != 1 || actualValue[1].(int) != 2 || actualValue[2].(int) != 3 {
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t.Errorf("Got %v expected %v", actualValue, "[1,2,3]")
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}
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if actualValue := queue.Empty(); actualValue != false {
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t.Errorf("Got %v expected %v", actualValue, false)
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}
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if actualValue := queue.Size(); actualValue != 3 {
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t.Errorf("Got %v expected %v", actualValue, 3)
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}
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if actualValue, ok := queue.Peek(); actualValue != 1 || !ok {
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t.Errorf("Got %v expected %v", actualValue, 1)
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}
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}
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func TestQueuePeek(t *testing.T) {
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queue := New()
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if actualValue, ok := queue.Peek(); actualValue != nil || ok {
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t.Errorf("Got %v expected %v", actualValue, nil)
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}
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queue.Enqueue(1)
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queue.Enqueue(2)
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queue.Enqueue(3)
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if actualValue, ok := queue.Peek(); actualValue != 1 || !ok {
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t.Errorf("Got %v expected %v", actualValue, 1)
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}
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}
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func TestQueueDequeue(t *testing.T) {
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queue := New()
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queue.Enqueue(1)
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queue.Enqueue(2)
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queue.Enqueue(3)
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queue.Dequeue()
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if actualValue, ok := queue.Peek(); actualValue != 2 || !ok {
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t.Errorf("Got %v expected %v", actualValue, 2)
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}
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if actualValue, ok := queue.Dequeue(); actualValue != 2 || !ok {
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t.Errorf("Got %v expected %v", actualValue, 2)
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}
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if actualValue, ok := queue.Dequeue(); actualValue != 3 || !ok {
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t.Errorf("Got %v expected %v", actualValue, 3)
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}
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if actualValue, ok := queue.Dequeue(); actualValue != nil || ok {
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t.Errorf("Got %v expected %v", actualValue, nil)
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}
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if actualValue := queue.Empty(); actualValue != true {
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t.Errorf("Got %v expected %v", actualValue, true)
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}
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if actualValue := queue.Values(); len(actualValue) != 0 {
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t.Errorf("Got %v expected %v", actualValue, "[]")
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}
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}
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func TestQueueIterator(t *testing.T) {
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queue := New()
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queue.Enqueue("a")
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queue.Enqueue("b")
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queue.Enqueue("c")
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// Iterator
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it := queue.Iterator()
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count := 0
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for it.Next() {
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count++
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index := it.Index()
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value := it.Value()
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switch index {
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case 0:
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if actualValue, expectedValue := value, "a"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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case 1:
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if actualValue, expectedValue := value, "b"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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case 2:
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if actualValue, expectedValue := value, "c"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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default:
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t.Errorf("Too many")
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}
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if actualValue, expectedValue := index, count-1; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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}
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if actualValue, expectedValue := count, 3; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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queue.Clear()
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it = queue.Iterator()
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for it.Next() {
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t.Errorf("Shouldn't iterate on empty queue")
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}
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}
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func TestQueueIteratorBegin(t *testing.T) {
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queue := New()
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it := queue.Iterator()
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it.Begin()
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queue.Enqueue("a")
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queue.Enqueue("b")
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queue.Enqueue("c")
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for it.Next() {
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}
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it.Begin()
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it.Next()
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if index, value := it.Index(), it.Value(); index != 0 || value != "a" {
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t.Errorf("Got %v,%v expected %v,%v", index, value, 0, "a")
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}
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}
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func TestQueueIteratorFirst(t *testing.T) {
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queue := New()
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it := queue.Iterator()
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if actualValue, expectedValue := it.First(), false; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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queue.Enqueue("a")
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queue.Enqueue("b")
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queue.Enqueue("c")
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if actualValue, expectedValue := it.First(), true; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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if index, value := it.Index(), it.Value(); index != 0 || value != "a" {
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t.Errorf("Got %v,%v expected %v,%v", index, value, 0, "a")
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}
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}
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func TestQueueSerialization(t *testing.T) {
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queue := New()
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queue.Enqueue("a")
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queue.Enqueue("b")
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queue.Enqueue("c")
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var err error
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assert := func() {
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if actualValue, expectedValue := fmt.Sprintf("%s%s%s", queue.Values()...), "abc"; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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if actualValue, expectedValue := queue.Size(), 3; actualValue != expectedValue {
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t.Errorf("Got %v expected %v", actualValue, expectedValue)
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}
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if err != nil {
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t.Errorf("Got error %v", err)
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}
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}
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assert()
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json, err := queue.ToJSON()
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assert()
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err = queue.FromJSON(json)
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assert()
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}
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func benchmarkEnqueue(b *testing.B, queue *Queue, size int) {
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for i := 0; i < b.N; i++ {
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for n := 0; n < size; n++ {
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queue.Enqueue(n)
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}
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}
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}
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func benchmarkDequeue(b *testing.B, queue *Queue, size int) {
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for i := 0; i < b.N; i++ {
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for n := 0; n < size; n++ {
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queue.Dequeue()
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}
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}
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}
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func BenchmarkLinkedListQueueDequeue100(b *testing.B) {
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b.StopTimer()
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size := 100
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queue := New()
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for n := 0; n < size; n++ {
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queue.Enqueue(n)
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}
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b.StartTimer()
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benchmarkDequeue(b, queue, size)
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}
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func BenchmarkLinkedListQueueDequeue1000(b *testing.B) {
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b.StopTimer()
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size := 1000
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queue := New()
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for n := 0; n < size; n++ {
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queue.Enqueue(n)
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}
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b.StartTimer()
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benchmarkDequeue(b, queue, size)
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}
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func BenchmarkLinkedListQueueDequeue10000(b *testing.B) {
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b.StopTimer()
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size := 10000
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queue := New()
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for n := 0; n < size; n++ {
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queue.Enqueue(n)
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}
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b.StartTimer()
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benchmarkDequeue(b, queue, size)
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}
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func BenchmarkLinkedListQueueDequeue100000(b *testing.B) {
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b.StopTimer()
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size := 100000
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queue := New()
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for n := 0; n < size; n++ {
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queue.Enqueue(n)
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}
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b.StartTimer()
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benchmarkDequeue(b, queue, size)
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}
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func BenchmarkLinkedListQueueEnqueue100(b *testing.B) {
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b.StopTimer()
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size := 100
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stack := New()
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b.StartTimer()
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benchmarkEnqueue(b, stack, size)
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}
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func BenchmarkLinkedListQueueEnqueue1000(b *testing.B) {
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b.StopTimer()
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size := 1000
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queue := New()
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for n := 0; n < size; n++ {
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queue.Enqueue(n)
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}
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b.StartTimer()
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benchmarkEnqueue(b, queue, size)
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}
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func BenchmarkLinkedListQueueEnqueue10000(b *testing.B) {
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b.StopTimer()
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size := 10000
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queue := New()
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for n := 0; n < size; n++ {
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queue.Enqueue(n)
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}
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b.StartTimer()
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benchmarkEnqueue(b, queue, size)
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}
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func BenchmarkLinkedListQueueEnqueue100000(b *testing.B) {
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b.StopTimer()
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size := 100000
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queue := New()
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for n := 0; n < size; n++ {
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queue.Enqueue(n)
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}
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b.StartTimer()
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benchmarkEnqueue(b, queue, size)
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}
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