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Difficult computer science problem

Scheduled Pinned Locked Moved C / C++ / MFC
data-structuresgraphicsalgorithmshelpquestion
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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

    T 1 Reply Last reply
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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! ]

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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

        T 1 Reply Last reply
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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

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            • C cje

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

              cje

              T Offline
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              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
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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! ]

                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
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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)

                      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
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                      • 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
                          0
                          • 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
                              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)

                                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

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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

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                                  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
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                                      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! ]

                                      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)

                                        L Offline
                                        L Offline
                                        led mike
                                        wrote on last edited by
                                        #22

                                        Can't you keep a running total and the number of inputs in two variables. Then you can calculate the average and of course half the number of variables is above the average. Or am I missing something?

                                        led mike

                                        T D 2 Replies Last reply
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                                        • L led mike

                                          Can't you keep a running total and the number of inputs in two variables. Then you can calculate the average and of course half the number of variables is above the average. Or am I missing something?

                                          led mike

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                                          T Offline
                                          toxcct
                                          wrote on last edited by
                                          #23

                                          missing something calculating the average "on the run" is easy to do with a float and an integer. but to tell how many of the inputs were upper than the average... no chance if you don't store the datas...


                                          TOXCCT >>> GEII power

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

                                          L 1 Reply Last reply
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