+1-617-874-1011 (US)Queues Data Structure Homework Help
Queue is a data structure that maintain "First In First Out" (FIFO) order. In encoding, queue is generally utilized like a data structure for BFS (Breadth First Search).
Queue A first-in, first-out (FIFO) data structure.
Queue Operations
Operations on queue Q are :
- enqueue : insert item at the back of queue Q
- dequeue : return (and virtually remove) the front item from queue Q
- init : intialize queue Q, reset all variables.
Implementation In C
#include<studio.h>
#define QUEUE_SIZE100
typedefstruct{int q[QURUE_SIZE];
int first, last;
int count;
}queue;
void init_queue(queue*q)
{ q->first=0;
q->last=QUEUE_SIZE-1;
q->count=0;}
void enqueue (queue*q,int x){
q->last=(q->last+1)%QUEUE_SIZE;
q->q[q->last]=x;
q->count=q->count+1;}
int dequeue(queue*q){
intx=q->q[q->first];
q->first=(q->first+1)%QUEUE_SIZE;
q->count=q->count-1;
return x;}
int main(){
queue q;
init_queue(&q);
enqueue(&q,1);
enqueue(&q,2);
enqueue(q3,3);
while(q.count)
printf(%d\n", dequeue(&q));
return 0;}
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