4.2 Implementation of Queue using Arrays | Data Structures & Algorithm Tutorials

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Mam trust me ,i was about to write this queue data structures as a lecture series on every video you have uploaded, as a comment ,so that you may decide to do so and here you are 💯💯💯😊 !!!! Thanks alot.Trees like b+ etc will also be appreciated.

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You’re a great teacher. You clarified my doubts. I was confused why enqueue is O(1) and you used a great visual representation 🎉

[@cyanider069]

Note : This code worked for me. if there is any mistake, please let me know. CODE: #include using namespace std; #define N 5 int queue[N]; int front = -1; int rear = -1; void display() { if (front == -1 && rear == -1) { cout

[@lamishajoshi7480]

Declare front and rear as pointer and point them to array naming queue

[@meenakship993]

can i know which compiler u used

[@cyanider069]

@@meenakship993 I forget the version but any gcc cpp compiler will do the work.

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I have a ds exam in 2 days and here i am ;) Studying CE in IUST btw Love and appreciation from iran❤️‍🔥🇮🇷

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Very good explanation Ma'am, thank you so much! However, it would benefit us even more if you could explain to us how to integrate all these functions with the main function.

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[@pooyataheri8092]

dequeue and peek usually have a return type, not just printing the value of front in a void function.

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I have a different excuse....I have an assignment to complete this week n I gotta study to complete it lol 😀 thankyou for the wonderful lectures!!

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Thank you so much, have been struggling to grab the concept since different sources where providing different concepts of queue.

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[@mohdtarik4803]

Your teaching style owsome mam Very thankful mam From Kanpur 💕💕💯 But mam I think In dequeue function there should be a temporary variable that can be hold the value of front And then we increament temp variable that's it Thanks 😊 mam

[@ajeetsingh4986]

I believe it is best to shift every element of the array one place to the left in the case of de-queueing rather than moving the front pointer. If I'm mistaken, kindly point it out. Other from this, there's no denying that your videos are excellent ☺

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But that seems so irrelevant

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[@PRACHIIKHAR]

// Online C compiler to run C program online #include #include #define N 5 int a,front=-1,rear=-1; void enqueue(); void dequeue(); void peek(); void display(); int queue[N]; int main() { int choice,ch; while(ch=1){ printf("Enter your choice: 1.Enqueue 2.Dequeue 3.Peek 4.Display: "); scanf("%d",&choice); switch(choice) { case 1: enqueue(); break; case 2: dequeue(); break; case 3: peek(); break; case 4: display(); break; default: printf(" Invalid Choice : "); } printf(" Do you want to continue? "); scanf("%d",&ch); } } void enqueue() { if(front==-1 && rear==-1) { front=rear=0; printf(" Enter the number :"); scanf("%d",&a); queue[rear]=a; } else if(front==N-1) { printf("Queue Overflow"); } else{ printf(" Enter the number :"); scanf("%d",&a); rear++; queue[rear]=a; } } void dequeue() { if(rear==-1 && front==-1) { printf(" Empty "); } else { printf("Deleted item is %d",queue[front]); front++; } } void peek() { int item; item=queue[front]; printf("Top/Peek item is %d",item); } void display(){ int i; for(i=front; i

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Thanks for making Queue simple and clear...nice job

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[@venkateshrajendran2362]

Let say array length is 3 , rear and front are in index 2 nd now i call enQ() . Technically queue is not full but having one element in it so queue should allow me to add element. Rather it will say overflow. Please correct me if I'm wrong. And your lectures are very clear. Thanks for making videos, Jenny. And your smile at end is so cute. 😅

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u can modify the if condition for that.

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