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Difficult computer science problem

Scheduled Pinned Locked Moved C / C++ / MFC
data-structuresgraphicsalgorithmshelpquestion
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  • S Semion_N

    Does anyone know an algorithm that recieves an unknown amount of numbers(it stops when it recieves -1) and calculates how many of them are above the average without using an array, list, vector, stack, file ect.? Is it even possible?

    SnaidiS(Semion)

    C Offline
    C Offline
    Chris Losinger
    wrote on last edited by
    #2

    i'd say "no, not possible".

    image processing | blogging

    1 Reply Last reply
    0
    • S Semion_N

      Does anyone know an algorithm that recieves an unknown amount of numbers(it stops when it recieves -1) and calculates how many of them are above the average without using an array, list, vector, stack, file ect.? Is it even possible?

      SnaidiS(Semion)

      T Offline
      T Offline
      toxcct
      wrote on last edited by
      #3

      while number received != -1
      store the number
      end while
      calculate the average
      iterate through the array constructed below
      if number in the iteration is above the average
      increment counter
      end if
      end iterations

      but the question is, WHY don't you want to use the STL ?? managing your own memory with such growing arrays are not good things to do by yourself...


      TOXCCT >>> GEII power

      [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

      C D 2 Replies Last reply
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      • T toxcct

        while number received != -1
        store the number
        end while
        calculate the average
        iterate through the array constructed below
        if number in the iteration is above the average
        increment counter
        end if
        end iterations

        but the question is, WHY don't you want to use the STL ?? managing your own memory with such growing arrays are not good things to do by yourself...


        TOXCCT >>> GEII power

        [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

        C Offline
        C Offline
        Chris Losinger
        wrote on last edited by
        #4

        toxcct wrote:

        iterate through the array

        you can't use arrays

        image processing | blogging

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        • C Chris Losinger

          toxcct wrote:

          iterate through the array

          you can't use arrays

          image processing | blogging

          T Offline
          T Offline
          toxcct
          wrote on last edited by
          #5

          it was a pseudo code...


          TOXCCT >>> GEII power

          [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

          C 1 Reply Last reply
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          • T toxcct

            it was a pseudo code...


            TOXCCT >>> GEII power

            [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

            C Offline
            C Offline
            Chris Losinger
            wrote on last edited by
            #6

            why does that matter? the original post said "no arrays".

            image processing | blogging

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            • C Chris Losinger

              why does that matter? the original post said "no arrays".

              image processing | blogging

              T Offline
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              toxcct
              wrote on last edited by
              #7

              because even if "iterate" is not the correct word, he can still traverse the array he'd have built...


              TOXCCT >>> GEII power

              [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

              C 1 Reply Last reply
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              • T toxcct

                because even if "iterate" is not the correct word, he can still traverse the array he'd have built...


                TOXCCT >>> GEII power

                [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

                C Offline
                C Offline
                cje
                wrote on last edited by
                #8

                he said 'no arrays' which I think means no arrays not iterators

                cje

                T 1 Reply Last reply
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                • C cje

                  he said 'no arrays' which I think means no arrays not iterators

                  cje

                  T Offline
                  T Offline
                  toxcct
                  wrote on last edited by
                  #9

                  :~ sorry, don't get you...


                  TOXCCT >>> GEII power

                  [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

                  S 1 Reply Last reply
                  0
                  • T toxcct

                    while number received != -1
                    store the number
                    end while
                    calculate the average
                    iterate through the array constructed below
                    if number in the iteration is above the average
                    increment counter
                    end if
                    end iterations

                    but the question is, WHY don't you want to use the STL ?? managing your own memory with such growing arrays are not good things to do by yourself...


                    TOXCCT >>> GEII power

                    [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

                    D Offline
                    D Offline
                    David Crow
                    wrote on last edited by
                    #10

                    toxcct wrote:

                    store the number

                    To what?


                    "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                    "Judge not by the eye but by the heart." - Native American Proverb

                    T 1 Reply Last reply
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                    • T toxcct

                      :~ sorry, don't get you...


                      TOXCCT >>> GEII power

                      [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

                      S Offline
                      S Offline
                      Semion_N
                      wrote on last edited by
                      #11

                      You just can't use arrays! You have no array at the beggining, the user writes for you the input number by number-NO ARRAYS!

                      SnaidiS(Semion)

                      T 1 Reply Last reply
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                      • D David Crow

                        toxcct wrote:

                        store the number

                        To what?


                        "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                        "Judge not by the eye but by the heart." - Native American Proverb

                        T Offline
                        T Offline
                        toxcct
                        wrote on last edited by
                        #12

                        to the paper next to the keyboard...


                        TOXCCT >>> GEII power

                        [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

                        D 1 Reply Last reply
                        0
                        • S Semion_N

                          Does anyone know an algorithm that recieves an unknown amount of numbers(it stops when it recieves -1) and calculates how many of them are above the average without using an array, list, vector, stack, file ect.? Is it even possible?

                          SnaidiS(Semion)

                          D Offline
                          D Offline
                          David Crow
                          wrote on last edited by
                          #13

                          While you can certainly compute the average without any additional storage, you'd still need to be able to go back through the set of numbers to pick out those greater than the average. Just for our edificaton, why the restriction? Is this your post, too?


                          "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                          "Judge not by the eye but by the heart." - Native American Proverb

                          1 Reply Last reply
                          0
                          • S Semion_N

                            You just can't use arrays! You have no array at the beggining, the user writes for you the input number by number-NO ARRAYS!

                            SnaidiS(Semion)

                            T Offline
                            T Offline
                            toxcct
                            wrote on last edited by
                            #14

                            WTF !! even if you had a console program, by which the user typed all the values in a single line, you could still create an array (or an STL container), parse the string to extract the values, and store them then... if you don't explain your problem exactly, how can we guess what you're doing ? :confused:


                            TOXCCT >>> GEII power

                            [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

                            S 1 Reply Last reply
                            0
                            • T toxcct

                              WTF !! even if you had a console program, by which the user typed all the values in a single line, you could still create an array (or an STL container), parse the string to extract the values, and store them then... if you don't explain your problem exactly, how can we guess what you're doing ? :confused:


                              TOXCCT >>> GEII power

                              [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

                              S Offline
                              S Offline
                              Semion_N
                              wrote on last edited by
                              #15

                              the problem says that you mustn't use arrays or other allocation of memory.

                              SnaidiS(Semion)

                              T 1 Reply Last reply
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                              • T toxcct

                                to the paper next to the keyboard...


                                TOXCCT >>> GEII power

                                [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

                                D Offline
                                D Offline
                                David Crow
                                wrote on last edited by
                                #16

                                That'll work! It satisfies the requirements of not using a list, array, etc. :-D


                                "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                                "Judge not by the eye but by the heart." - Native American Proverb

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                                • S Semion_N

                                  the problem says that you mustn't use arrays or other allocation of memory.

                                  SnaidiS(Semion)

                                  T Offline
                                  T Offline
                                  toxcct
                                  wrote on last edited by
                                  #17

                                  then, no chance to resolve it ;P


                                  TOXCCT >>> GEII power

                                  [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

                                  S 1 Reply Last reply
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                                  • S Semion_N

                                    Does anyone know an algorithm that recieves an unknown amount of numbers(it stops when it recieves -1) and calculates how many of them are above the average without using an array, list, vector, stack, file ect.? Is it even possible?

                                    SnaidiS(Semion)

                                    M Offline
                                    M Offline
                                    Michael Dunn
                                    wrote on last edited by
                                    #18

                                    So what kind of storage are you allowed to use?

                                    --Mike-- Visual C++ MVP :cool: LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

                                    S 1 Reply Last reply
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                                    • M Michael Dunn

                                      So what kind of storage are you allowed to use?

                                      --Mike-- Visual C++ MVP :cool: LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

                                      S Offline
                                      S Offline
                                      Semion_N
                                      wrote on last edited by
                                      #19

                                      just variables. int, float,char..

                                      SnaidiS(Semion)

                                      1 Reply Last reply
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                                      • T toxcct

                                        then, no chance to resolve it ;P


                                        TOXCCT >>> GEII power

                                        [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

                                        S Offline
                                        S Offline
                                        Semion_N
                                        wrote on last edited by
                                        #20

                                        You say that there is no chanse to resolve it so can you prove it mathematiclly?

                                        SnaidiS(Semion)

                                        T H 2 Replies Last reply
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                                        • S Semion_N

                                          You say that there is no chanse to resolve it so can you prove it mathematiclly?

                                          SnaidiS(Semion)

                                          T Offline
                                          T Offline
                                          toxcct
                                          wrote on last edited by
                                          #21

                                          i'm tired with your thread... go find someone else to bore


                                          TOXCCT >>> GEII power

                                          [VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

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