Queue

236 Comments / Trending / December 30, 2022

Queues are abstract data structures that are similar to Stacks. A queue, unlike a stack, is open at both ends. One end is always used to input data (enqueue), whereas the other end is always used to delete data (dequeue). The queue employs the First-In-First-Out (FIFO) mechanism, which means that the data item stored first will be accessed first.

Basic Operations

Queue operations may involve initializing or defining the queue, utilizing it, and then completely erasing it from the memory. Here we shall try to understand the basic operations associated with queues −

  • enqueue() − add (store) an item to the queue.
  • dequeue() − remove (access) an item from the queue.

Few more functions are required to make the above-mentioned queue operation efficient. These are −

  • peek() − Gets the element at the front of the queue without removing it.
  • isfull() − Checks if the queue is full.
  • isempty() − Checks if the queue is empty.

peek() – Place the data at front of queue

Algorithm

begin procedure peek
   return queue[front]
end procedure

isfull() – Used to check if the queue is full.

Algorithm

begin procedure isfull

   if rear equals to MAXSIZE
      return true
   else
      return false
   endif
   
end procedure

isempty()- Checks if the queue is empty or not.

Algorithm

begin procedure isempty

   if front is less than MIN  OR front is greater than rear
      return true
   else
      return false
   endif
   
end procedure

Enqueue Operation

Queues maintain two data pointers, front and rear. Therefore, its operations are comparatively difficult to implement than that of stacks.

The following steps should be taken to enqueue (insert) data into a queue −

  • Step 1 − Check if the queue is full.
  • Step 2 − If the queue is full, produce overflow error and exit.
  • Step 3 − If the queue is not full, increment rear pointer to point the next empty space.
  • Step 4 − Add data element to the queue location, where the rear is pointing.
  • Step 5 − return success.

Dequeue Operation

Accessing data from the queue is a process of two tasks − access the data where front is pointing and remove the data after access. The following steps are taken to perform dequeue operation −

  • Step 1 − Check if the queue is empty.
  • Step 2 − If the queue is empty, produce underflow error and exit.
  • Step 3 − If the queue is not empty, access the data where front is pointing.
  • Step 4 − Increment front pointer to point to the next available data element.
  • Step 5 − Return success.
Share on Facebook
Tweet
0

Related posts:

  1. Stack
  2. Algorithms
  3. Breadth First Traversal
  4. Linked List

236 thoughts on “Queue”

  1. Janice Ruano

    Hi,

    I got a recommendation for your website as a valuable resource.

    My team uses your website as inspiration for many blog posts they write. I got the idea to contact you and see if we can work together. We have extensive experience in your industry and have written many articles on top-rated websites.

    I can share our work with you, and we can write one piece for your website on a topic you still need to cover.

    Thank you for your time, and I look forward to working together.

    Best,

    0
    Reply
  2. 5592

    Blond twink kyleFinee naked menGirrl diarrhea on fwce pornToomy and vintave
    and rrcords andd trainFree grouup sex tubesSexxy couple sex storiesFacial maan neew surgery yorkGirls on girl fdee xxxMy sexy
    auntsSacramento ggay iifeAsian ladyboy bbus proobe tubeFreee dosnblouse
    photos. Students downblouse. Amateur downblouseBestt pprn sites mppv downloadsAdylt porn realityHoemade mobule pornBesst sexuql lubricatorDogpile adults onlySexy miranda cosgroveHarrd workijng slutsAdult communities wilkews barrre paNude grannie thumbsPreg black xxxMens mastrbation waysAsss hott wanker womanTeenn
    creampie pussiesOccasional stinging whille peeingSttar trek women pictures nudeAttention defcit disorderr adulot deficiencyNeighbor fck festRussiaan teeens in pantiesTeen toee picsMlody
    yattes voyeurGet porn passNked asian muscoe guysCraibs
    lizt sexx knoxvilleJocelyn sex freeSexy cream pieWideless remote
    virator wommen quietHomegrown free erotic videoPam grie breast implantsCuum shotss in herNiace adcult
    learnersBig black anal hoesPcture nude beachesNaughty mlf assholeBig boobb
    asainsGaay accfommodation baliMture women in a catfightSmlking nude
    centerfoldsFree dpp ssleeping porn mylf selects Adlt sizxe christma slippersTeenn haircuts ffor medium lengthDr william mayfielkd sexsual assault1 12th scale vintage vehiclesShhe male
    fucls girlRedheads that fuck giant cocksHeer first tasre oof spermBleahing aan assholeAsiwn room dividersFucck tryoutsGoore fistSexx tips clitorisVahessa aann hudgens nujde photos unsensoredFeltt new boobs picOrral contraceptive cmeGirls in uniform sexVintage
    japaneese gamblingXxxx personals roky gap virginiaDrrawing cartoon doopes facial expressionsSoohh assTeeen lonng johns2 hoot 2 much sex teenWojen sexx partiesIndian porn flvNude photos highshool girls lockerroomFucck mmy dumb aass girlfriendPisssing pigmyDr hook pleashre painSan iego student sexLoori singer
    nude picsMaturee aain uupskirt picAustralia silk chiffcon lingerieFekale domination storiees onlineLesbian txt buddiesNakwd motoristsMutual maturbation ggay vidsLingerie modelps open frpnt pantiesManhattan escot
    servicesTeens sports odels pics girlsMatire saloppeFatt peole nudeBoobss bartender suprkse funny candidHaard hairty cockNudee poser in graveyardSexxual
    humiliation pornLesbiaan camp songWatch jacks tewn americaGoldd bracelert breast cancerBeutifull nnude women modelsPerky teen toplessWhy justin biber sucksG
    magazine triplets nudeFfm porn tubeHott asss bodies lesbian girlsFreee
    amature cheating pornNuude msja and clothed majaVintage unkted airlineViintage rolex 6202Nudde bboy
    picksDenise lockbaum rujors bisexualCreating a breas like
    formXxxx xexMasturbation efrfect oon testosteronePhotos oof totaqlly shaved menn nakedSttairs fck
    moviesOlld lvs yopung fucking free picsHow to give aan uncircumsized penis headBeach
    naked phoo womanBooob picxture off the daySupler hott teenCassie
    ventura fuull sexx tapeWorld’s largest boopbed teenRyno laher wrist
    thumb supportTiffany bryannt nakedBlack cock foot
    whiteGarter ady sexy stocking18 erotc tubeEmo girls uck dadBeent ovfer a motorcycle andd spankedFreee
    amwteur nipples nudee nakedDeams bys nakedPussy illustrated partsChattanooga fetish oca lunaScream cry pussyy punished spaank videoOldd eationg youmg pussyAmanda heaed
    nudeNude mosel 70 picsAmani sexy picsMaine teeen campsNudde faqke kawte jacksonMotheres wwho sspank
    thgeir ternage daughtersCum while grindingMarure cum sholt
    pornInuuit fafial tattooLeez lezbo lesbian gyuno kissDruk horny
    college redheadsTruue virgins have sexNaughty aangle njde photosHavoc sucking cocksNaked
    sbots of vaneswa hudgensOutcall nude entertainerVintage metgal pichersSociemotional adultHoot nnude pic of beyonceBddsm chastityRelationship
    seex womanTrsci lords picturds naked nudePorrn 3d
    cartoon clipsSurdvey adfult literacyMost beautful women inn bikinisDebbiie frokm monsters off cockInternal cumshotsFrree celebrity sex tapes streamingTampa
    peeing seex singlesSkinny ebokny girls xxxx mpegsOlld
    vintage retro femdomPictures pff wwe diva maryse boobsOutdoor pisss 2007 jelsooft enterprises ltdBoykin penis
    pillsDialating vaginaFree catagorized porrn storiesSheeer to waist
    junio miuss pantyhoseTiim beard sexx wjth urszula materskaSex
    slave narrativesMale virginity testAduilt massage parlors orlandoSextrracker shaved pussiesPicturs off adulkt sbih poo dogsIncresase in size
    off onne breastHiitchhiker foorced to suckAduot
    big boobLigvht bhlbs forr vontage radioTokyo mongeringg mawsage jjapan sexCockk
    and ball toture howDominic monaghasn ggay kissThe effect of hysterectomy
    on sexual reesponse annd sexual identityAztlan sexRussian mature motherSmelly gayRocco senfredi addult
    filmsChinees seex poorn videoXtujbe matiure fuckingInndo nudeEcort
    service ffor manFemjale latex allergy symptomsFreee
    daad aand sonn gayy pornHott sexy faerry picsTons off gaay blck tubeHoot nsty
    asianSecond life ssex screenshots

    0
    Reply
  5. graliontorile

    I like what you guys are up too. Such smart work and reporting! Keep up the excellent works guys I?¦ve incorporated you guys to my blogroll. I think it’ll improve the value of my site 🙂

    0
    Reply
  7. Jin Skora

    What i do not understood is in fact how you’re now not actually much more smartly-liked than you may be now. You are very intelligent. You realize therefore considerably when it comes to this matter, made me personally believe it from numerous varied angles. Its like men and women don’t seem to be involved unless it’s one thing to accomplish with Girl gaga! Your personal stuffs great. At all times deal with it up!

    0
    Reply
  15. Jeanmarie Moher

    I do love the way you have presented this specific concern plus it does supply me personally some fodder for thought. Nevertheless, from what precisely I have seen, I only wish as the feed-back stack on that people keep on issue and don’t get started upon a tirade associated with some other news of the day. Still, thank you for this superb point and even though I can not really agree with the idea in totality, I respect the point of view.

    0
    Reply
  20. Slotbom77

    What¦s Happening i’m new to this, I stumbled upon this I have found It absolutely useful and it has aided me out loads. I’m hoping to give a contribution & assist different customers like its aided me. Good job.

    0
    Reply
  21. KKSLOT777

    It’s really a great and helpful piece of information. I am glad that you shared this useful information with us. Please keep us informed like this. Thanks for sharing.

    0
    Reply
  26. Kedai138

    What’s Happening i am new to this, I stumbled upon this I have found It positively helpful and it has helped me out loads. I hope to contribute & aid other users like its aided me. Great job.

    0
    Reply
  105. hire a hacker today

    Pretty nice post. I just stumbled upon your blog and wanted to say that I’ve really loved browsing your weblog posts. In any case I will be subscribing in your feed and I hope you write once more very soon!

    0
    Reply
  114. air tag.

    Hi my friend! I wish to say that this article is awesome, great written and come with almost all significant infos. I’d like to look extra posts like this .

    0
    Reply
  126. Sugar defender

    This blog is definitely rather handy since I’m at the moment creating an internet floral website – although I am only starting out therefore it’s really fairly small, nothing like this site. Can link to a few of the posts here as they are quite. Thanks much. Zoey Olsen

    0
    Reply
  129. fitspresso review

    Hi, just required you to know I he added your site to my Google bookmarks due to your layout. But seriously, I believe your internet site has 1 in the freshest theme I??ve came across. It extremely helps make reading your blog significantly easier.

    0
    Reply
  131. sugar defender reviews

    Just wish to say your article is as astounding. The clarity on your put up is simply great and that i could suppose you are an expert on this subject. Well together with your permission allow me to seize your RSS feed to keep updated with forthcoming post. Thank you one million and please keep up the enjoyable work.

    0
    Reply
  135. Fitspresso

    Hello my friend! I want to say that this post is awesome, nice written and include approximately all significant infos. I’d like to see more posts like this.

    0
    Reply
  146. Sight Care

    Good web site! I truly love how it is simple on my eyes and the data are well written. I’m wondering how I might be notified when a new post has been made. I’ve subscribed to your RSS feed which must do the trick! Have a nice day!

    0
    Reply
  149. hire a hacker

    Thanks for sharing superb informations. Your web-site is so cool. I am impressed by the details that you?¦ve on this blog. It reveals how nicely you understand this subject. Bookmarked this web page, will come back for extra articles. You, my pal, ROCK! I found just the information I already searched all over the place and simply couldn’t come across. What a great site.

    0
    Reply
  159. Java Burn reviews

    Very interesting information!Perfect just what I was searching for! “Love endures only when the lovers love many things together and not merely each other.” by Walter Lippmann.

    0
    Reply
  160. Fitspresso reviews

    An impressive share, I simply given this onto a colleague who was doing somewhat evaluation on this. And he in actual fact purchased me breakfast as a result of I discovered it for him.. smile. So let me reword that: Thnx for the treat! However yeah Thnkx for spending the time to discuss this, I really feel strongly about it and love studying more on this topic. If possible, as you change into expertise, would you thoughts updating your weblog with extra details? It’s extremely helpful for me. Large thumb up for this blog post!

    0
    Reply
  162. Tonic Greens

    I just couldn’t leave your web site prior to suggesting that I extremely loved the usual info a person provide for your visitors? Is going to be back frequently to investigate cross-check new posts

    0
    Reply
  169. Sumatra slim belly tonic

    Great work! This is the type of information that are meant to be shared across the web. Disgrace on Google for now not positioning this publish higher! Come on over and talk over with my website . Thanks =)

    0
    Reply
  170. Fitspresso review

    Thank you for another informative web site. Where else could I get that kind of information written in such a perfect way? I have a project that I am just now working on, and I’ve been on the look out for such info.

    0
    Reply
  171. kerassentials review

    An attention-grabbing dialogue is value comment. I believe that it is best to write extra on this matter, it may not be a taboo topic however usually persons are not sufficient to talk on such topics. To the next. Cheers

    0
    Reply
  173. Prova dent

    Hey, you used to write wonderful, but the last few posts have been kinda boring… I miss your tremendous writings. Past few posts are just a little bit out of track! come on!

    0
    Reply
  180. hire a hacker to catch a cheating spouse

    Just wish to say your article is as astonishing. The clarity in your submit is just cool and that i could think you are knowledgeable in this subject. Well together with your permission allow me to clutch your RSS feed to keep up to date with forthcoming post. Thanks 1,000,000 and please keep up the enjoyable work.

    0
    Reply
  184. Fitspresso

    I found your weblog site on google and test a couple of of your early posts. Continue to maintain up the excellent operate. I simply further up your RSS feed to my MSN Information Reader. Looking for forward to studying extra from you in a while!…

    0
    Reply
  192. java burn review

    Hey There. I found your blog using msn. This is a really well written article. I will make sure to bookmark it and come back to read more of your useful information. Thanks for the post. I will certainly comeback.

    0
    Reply
  198. Fitspresso reviews

    I?¦m not positive where you are getting your information, however good topic. I must spend some time studying much more or understanding more. Thank you for wonderful info I used to be on the lookout for this information for my mission.

    0
    Reply
  200. Liv Pure

    I think other site proprietors should take this web site as an model, very clean and fantastic user friendly style and design, let alone the content. You are an expert in this topic!

    0
    Reply
  202. Sumatra slim belly tonic review

    Hi there! Someone in my Facebook group shared this website with us so I came to check it out. I’m definitely loving the information. I’m book-marking and will be tweeting this to my followers! Superb blog and fantastic style and design.

    0
    Reply
  204. hire a hacker uk

    The very crux of your writing whilst appearing reasonable in the beginning, did not really settle well with me personally after some time. Someplace within the paragraphs you were able to make me a believer unfortunately just for a while. I still have got a problem with your leaps in assumptions and you might do nicely to help fill in all those breaks. In the event you actually can accomplish that, I could undoubtedly be impressed.

    0
    Reply
  207. cognicare pro reviews

    What is CogniCare Pro? CogniCare Pro is 100 natural and safe to take a cognitive support supplement that helps boost your memory power. This supplement works greatly for anyone of any age and without side effects

    0
    Reply
  208. cognicare pro

    What is CogniCare Pro? CogniCare Pro is 100 natural and safe to take a cognitive support supplement that helps boost your memory power. This supplement works greatly for anyone of any age and without side effects

    0
    Reply
  209. tea burn reviews

    What is Tea Burn? Tea Burn is a new market-leading fat-burning supplement with a natural patent formula that can increase both speed and efficiency of metabolism. Combining it with Tea, water, or coffee can help burn calories quickly.

    0
    Reply
  215. Sugar Defender

    Pretty section of content. I just stumbled upon your web site and in accession capital to claim that I get in fact loved account your blog posts. Anyway I will be subscribing in your augment or even I achievement you access persistently quickly.

    0
    Reply
  220. dormir en pamplona

    Hi, I think your website might be having browser compatibility issues. When I look at your website in Ie, it looks fine but when opening in Internet Explorer, it has some overlapping. I just wanted to give you a quick heads up! Other then that, very good blog!

    0
    Reply
  223. Neotonics

    Very interesting topic, appreciate it for putting up. “What passes for optimism is most often the effect of an intellectual error.” by Raymond Claud Ferdinan Aron.

    0
    Reply
  232. Prostabiome

    Hey there! Someone in my Myspace group shared this site with us so I came to take a look. I’m definitely enjoying the information. I’m bookmarking and will be tweeting this to my followers! Fantastic blog and brilliant design.

    0
    Reply
  233. Java Burn review

    Very interesting info !Perfect just what I was looking for! “Oh, I don’t blame Congress. If I had 600 billion at my disposal, I’d be irresponsible, too.” by Lichty and Wagner.

    0
    Reply
  235. Fitspresso Coffee Loophole

    Howdy very nice website!! Man .. Excellent .. Wonderful .. I will bookmark your blog and take the feeds additionally…I am satisfied to find a lot of helpful information right here in the publish, we want develop extra techniques on this regard, thank you for sharing. . . . . .

    0
    Reply
  236. Audionex analise

    I just like the valuable information you supply for your articles. I’ll bookmark your blog and check once more right here regularly. I’m rather sure I’ll be told many new stuff right here! Best of luck for the next!

    0
    Reply

Leave a Comment

Your email address will not be published. Required fields are marked *

Home

Created by potrace 1.16, written by Peter Selinger 2001-2019

Tests

Created by potrace 1.16, written by Peter Selinger 2001-2019

Jobs/Internships

Created by potrace 1.16, written by Peter Selinger 2001-2019

Blogs

Created by potrace 1.16, written by Peter Selinger 2001-2019

Profile

Copyright © EngineersConnect | All Rights Reserved