Java Programming - Practice Recursion Problems

Recursion refers to define something in terms of itself. In this tutorial, we will solve difference recursion problems to get the better understand of how recursion works.
We will solve from easy problems and go to advance recursion problems.
1. Recursion of factorial.
2. Recursion of Fibonacci series.
3. Recursion of binary search
and other string, array recursion problems
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Пікірлер: 67

  • @anuragtestdata3830
    @anuragtestdata38303 жыл бұрын

    Thanks for uploading this video. I was looking for the basic problems on recursion from yesterday to get started on dynamic programming. I could not find a single video which starts from the basic. Most of them are either at a high level, or just algo, or just theory or simply avoid explaining the basics. This video definitely helped me to get started on this topic of recursion.

  • @Daniel_CLopes
    @Daniel_CLopes5 жыл бұрын

    Thank you for taking the time to do this great great video... Fantastic lesson about recursion!

  • @PhucNguyen-cd2rj
    @PhucNguyen-cd2rj3 жыл бұрын

    perfect!!!!! it helps me a lot when i am stucked totally with recursion

  • @jennaoneill7718
    @jennaoneill77184 жыл бұрын

    Thank you! Your explanations are amazingly clear and the examples really help solidify the theory that we have learnt.

  • @bebarshossny5766
    @bebarshossny57664 жыл бұрын

    Really benefitted from this video Especially pausing and doing the problem first then checking my answer Thanks a lot great video

  • @donrochuios6879
    @donrochuios68795 жыл бұрын

    this video was so helpful. could you do another set of problems involving strings and arrays?

  • @svenschroder9781
    @svenschroder97815 жыл бұрын

    Excellent explanation. Thanks a lot

  • @fishaorod4493
    @fishaorod44935 жыл бұрын

    thank you so much sir. amazing video for cs students

  • @TRUTHF0RCE
    @TRUTHF0RCE6 жыл бұрын

    Great video! Various exercises in one video, thank you very much.

  • @pauloalencar7859
    @pauloalencar7859 Жыл бұрын

    this video was really helpfull to me, thanks a lot, now I can understand a little bit more about recursion.

  • @rakesh8828
    @rakesh88285 жыл бұрын

    Best recursion video!!

  • @varunb7761
    @varunb77614 жыл бұрын

    Greater explanation thank you sir!!!!!!!!

  • @chimucobatista7079
    @chimucobatista70795 жыл бұрын

    amazing video very helpful

  • @victoralonsogarcia6944
    @victoralonsogarcia69442 жыл бұрын

    I am learning recursive functions in Haskell and I like the way to connect the same functions topic in both languages. I enjoyed your videos, I have to practice data Structures. Do you have apache Spark video materials, or Scala recursion topic? Kind regards.

  • @RahulKumar-tg5zb
    @RahulKumar-tg5zb7 жыл бұрын

    sir plz tell me how can I write a java program using words {J, O, K,E,R} to show it's all possible pattern and also count total no. of words formed.

  • @AwaisMirza1

    @AwaisMirza1

    7 жыл бұрын

    study combinations in maths and use that logic here.

  • @kellyfarran725
    @kellyfarran7255 жыл бұрын

    so helpful!

  • @amitdhawan579
    @amitdhawan5793 жыл бұрын

    Very helpful man. Thanks

  • @VijayGupta-kw4ok
    @VijayGupta-kw4ok5 жыл бұрын

    Very good sir explaned well

  • @shinebright5129
    @shinebright51292 жыл бұрын

    Thank you very much the video is very helpful even tho i wished you had some examples with array

  • @psychokiller3223
    @psychokiller32233 жыл бұрын

    Very helpful. Thanks

  • @varshapriyadarshini9822
    @varshapriyadarshini98222 жыл бұрын

    How can we print all the Fibonacci series till n instead of only nth position

  • @bro6139
    @bro61392 жыл бұрын

    Thank you so much 💕

  • @nareshbanra9171
    @nareshbanra91714 жыл бұрын

    Please show the dry run of each question , so that the logic will be cleared .

  • @RizaHariati
    @RizaHariati3 жыл бұрын

    THANK YOU SIRR!!

  • @RahulKumar-tg5zb
    @RahulKumar-tg5zb7 жыл бұрын

    sir at 5:38 in recursion program to print no. why u have written return in 1st if loop . What is it's use in program.🙏🙏🙏

  • @AwaisMirza1

    @AwaisMirza1

    7 жыл бұрын

    try to make dry run of this program. return is written to stop method calling when index reaches to zero. otherwise it will keep on calling itself and will never stop. if condition is called base case and base case must return something, null, 0 or any value.

  • @kushagragautam3979

    @kushagragautam3979

    6 жыл бұрын

    man exiting condition is always mentioned 1st in the recursion so that function call is not triggered for wrong inputs

  • @HalfMinuteLife
    @HalfMinuteLife3 жыл бұрын

    "Convert recursive algorithm to non recursive using rules for recursion " can you make video on it

  • @dimonasdf
    @dimonasdf6 жыл бұрын

    If you'd get a dollar every time you said "All right?"...) Nice video anyway, just what I needed.

  • @fero___3005
    @fero___30052 жыл бұрын

    Thanks ☺️

  • @aditya58691
    @aditya586914 жыл бұрын

    plz explain return 2+catEyes(cats-1) .

  • @samjam_93

    @samjam_93

    4 жыл бұрын

    each cat has 2 eyes so --> +2 when calling the function again we need reduce 1 cat as we have counted its eyes by adding 2 --> cats -1

  • @zanastumasonis
    @zanastumasonis4 жыл бұрын

    great video A++ thank you

  • @159saur
    @159saur4 жыл бұрын

    Can you please help me to understand a code ?

  • @ullasgokarnkar5858
    @ullasgokarnkar58587 жыл бұрын

    Awais sir can you please show the back process of fibnocci series using recursion

  • @user-ix3zy2vp5f
    @user-ix3zy2vp5f Жыл бұрын

    For base and power question, the base condition you have mentioned is incorrect. You should use if power==0, return 1 as the base condition. Else 2 to the power 0 which is 1 will throw an error in your code

  • @shibuprasad8293
    @shibuprasad82935 жыл бұрын

    Can u explain the control flow of fibonacci series program?

  • @vinayguptha8810

    @vinayguptha8810

    4 жыл бұрын

    share your email I will help you with the control flow or check this kzread.info/dash/bejne/dGeJmK5-qMrLpqg.html&frags=pl%2Cwn

  • @RahulKumar-tg5zb
    @RahulKumar-tg5zb7 жыл бұрын

    sorry sir for disturbing u again and again.But what can I do videos r really awesome by viewing them I can't stop myself to ask doubts.

  • @devada5362
    @devada53626 жыл бұрын

    For 8: This should be good enough right why bother about all those nested loops? public static int countDigit5(int num) { if(num return 0; } else { if(num%10 == 5) { return 1 + countDigit5(num/10); } else { return countDigit5(num/10); } } }

  • @pranitajambhulkar5505
    @pranitajambhulkar550511 ай бұрын

    Java ka koi apps hai kya sir

  • @bassel1074
    @bassel10745 жыл бұрын

    15:30

  • @jonathanwalzer8906
    @jonathanwalzer89065 жыл бұрын

    good speacher

  • @RedRebel8
    @RedRebel84 жыл бұрын

    Way too many ads - destroying what could be the best recursion video on youtube.

  • @chinthamokshith7887
    @chinthamokshith78873 жыл бұрын

    Bro this video was Ok but try to put some advance (how recursion works inside (for loop )) with step by step process

  • @m_k3359
    @m_k33594 жыл бұрын

    you best

  • @MadJDMTurboBoost
    @MadJDMTurboBoost7 жыл бұрын

    @ 35:47 I feel like you overcomplicated that one: if(n==0) return 0; if (n%10 == 5) return 1 + count5(n/10); else return count5(n/10);

  • @MadJDMTurboBoost

    @MadJDMTurboBoost

    7 жыл бұрын

    Nvm, I see you were just trying to show nested if/else in the base and recursive case. Great video by the way!

  • @Zefanya-Teki

    @Zefanya-Teki

    6 жыл бұрын

    What happens though if N is a number of 1-9 since you only made a stop for if n==0. Or would 9/10 result in a 0 so it would hit the stop?

  • @sichenzhu9651

    @sichenzhu9651

    6 жыл бұрын

    There is no problem actually

  • @debarati4207
    @debarati42075 жыл бұрын

    Everything was awesome.... except for the spelling of speakers🤣🤣

  • @jaihindu7105
    @jaihindu71055 жыл бұрын

    Hey .please increase your voice level

  • @Lightyagami-zy4qy
    @Lightyagami-zy4qy6 жыл бұрын

    Why don't u explain it in detail . I mean how the code actually runs !!!

  • @ashasaha3790
    @ashasaha37905 жыл бұрын

    explanation is not clear. Specially , return 2+catEyes(cats-1);

  • @counterguardian6145

    @counterguardian6145

    4 жыл бұрын

    Every return 2 sums up. catEyes(cats-1) is a counter like i-- , everytime it decrements - return 2 happens, so for every cat there are 2 eyes. It doesn't make sense to use recursion in this example though, but if you're thinking just make it return 2 * catEyes(cats) that would cause stack overflow due to infinite recursions. You need -1 to reach the base condition of 0 and exit the function.

  • @akarshsinghal9673
    @akarshsinghal96733 жыл бұрын

    45:39

  • @bahadrustabas8981
    @bahadrustabas89814 жыл бұрын

    It would be good if you send source code

  • @counterguardian6145

    @counterguardian6145

    4 жыл бұрын

    Don't be lazy, you can type all of it in 5min.

  • @jaweedhkhan786
    @jaweedhkhan7865 жыл бұрын

    Cat problem was not recursion

  • @counterguardian6145

    @counterguardian6145

    4 жыл бұрын

    Yeah it is, just it doesn't make sense to solve it with recursion when a simple * 2 will suffice, not even iteration is needed.

  • @bebarshossny5766

    @bebarshossny5766

    4 жыл бұрын

    @@counterguardian6145 nigga he said that But he's simply using as a practice problem So we have to try to solve it using recursion

  • @jakubpatrik2326
    @jakubpatrik23264 жыл бұрын

    [rikarion] xdddddddd

  • @youtubeaccount0x073
    @youtubeaccount0x0735 жыл бұрын

    I DO NOT GET NONTAIL RECURSION. These examples are so simple...

  • @Tidda420
    @Tidda420 Жыл бұрын

    Please decrease the volume of your voice from next video, it is very loud.