Java Minimum and Maximum values in Array

Question

My code does not give errors  however it is not displaying the minimum and maximum values  The code is   Scanner input   new Scanner System in    int array     new int 10    System out println  Enter the numbers now      for  int i   0  i  lt  array length  i          int next   input nextInt           sentineil that will stop loop when 999 is entered     if  next    999            break            array i    next         get biggest number     getMaxValue array          get smallest number     getMinValue array      System out println  These are the numbers you have entered     printArray array        getting the maximum value public static int getMaxValue int   array        int maxValue   array 0       for  int i   1  i  lt  array length  i              if  array i   gt  maxValue                maxValue   array i                       return maxValue        getting the miniumum value public static int getMinValue int   array        int minValue   array 0       for  int i   1  i  lt  array length  i              if  array i   lt  minValue                minValue   array i                       return minValue       this method prints the elements in an array         if this case is true  then that s enough to prove to you that the user input has    been stored in an array        public static void printArray int arr          int n   arr length       for  int i   0  i  lt  n  i              System out print arr i                    Do I need a system out println   to display it  or should the return work

User · Answer

Here you haven t print the max and min values  Print the max and min values in the getMaxVal and getMin val methods or after the call  This is the output   Enter the numbers now  5 Max  5 Min  0 3 Max  5 Min  0 7 Max  7 Min  0 3 Max  7 Min  0 90 Max  90 Min  0 43 Max  90 Min  0 100 Max  100 Min  0 45 Max  100 Min  0 23 Max  100 Min  0 22 Max  100 Min  3 These are the numbers you have entered  5 3 7 3 90 43 100 45 23 22      Also when you are declaring an array  it has all 0s initially

User · Answer

Here is the working code to find the min and max in the array I hope you will find it helpful    import java util Random   import java util Scanner   public class FindMin       public static void main String   args           System out println  Main Method Started            Scanner in   new Scanner System in           System out println  Enter the size of the arr            int size   in nextInt            System out println  Enter the maximum value of the arr            int max   in nextInt            int    arr    initializeArr max  size           print arr           findMinMax arr           System out println  Main Method Ended              public static void print int   arr           for int val arr               System out print val                           System out println              public static int   initializeArr int max int size           Random random   new Random            int    arr   new int size           for int ii 0 ii lt arr length ii                 arr ii  random nextInt max                     return arr            public static void findMinMax int   arr           int min arr 0           int max arr 0           for int ii 0 ii lt arr length ii                 if arr ii  lt min                   min arr ii                             else if arr ii  gt max                   max arr ii                                   System out println  The minimum in the arr    min           System out println  The maximum in the arr    max

User · Answer

You are doing two mistakes here  1  calling getMaxValue   getMinValue   methods before array initialization completes  2 Not storing return value returned by the getMaxValue   getMinValue   methods  So try this code     for  int i   0   i  lt  array length  i                 int next   input nextInt              sentineil that will stop loop when 999 is entered        if  next    999         break         array i    next           get biggest number   int maxValue   getMaxValue array     System out println maxValue          get smallest number   int minValue   getMinValue array     System out println minValue

User · Answer

I have updated your same code please compare code with your s original code    public class Help    public static void main String args         Scanner input   new Scanner System in        int array     new int 10        System out println  Enter the numbers now          for  int i   0  i  lt  array length  i              int next   input nextInt               sentineil that will stop loop when 999 is entered         if  next    999                break                    array i    next             System out println  These are the numbers you have entered         printArray array           get biggest number     System out println  Maximum    getMaxValue array           get smallest number     System out println  Minimum    getMinValue array          getting the maximum value public static int getMaxValue int   array        int maxValue   array 0       for  int i   1  i  lt  array length  i              if  array i   gt  maxValue                maxValue   array i                       return maxValue        getting the miniumum value public static int getMinValue int   array        int minValue   array 0       for  int i   1  i  lt  array length  i              if  array i   lt  minValue                minValue   array i                       return minValue       this method prints the elements in an array         if this case is true  then that s enough to prove to you that the user input has    been stored in an array        public static void printArray int arr          int n   arr length       for  int i   0  i  lt  n  i              System out print arr i

User · Answer

Yes you need to use a System out println  But you are getting the minimum and maximum everytime they input a value and don t keep track of the number of elements if they break early    Try   for  int i   0   i  lt  array length  i              int next   input nextInt              sentineil that will stop loop when 999 is entered        if  next    999             break          array i    next      int length   i      get biggest number  int large   getMaxValue array  length       get smallest number  int small   getMinValue array  length        actually print  System out println   Max      large     Min      small      Then you will have to pass length into the methods to determine min and max and to print  If you don t do this  the rest of the fields will be 0 and can mess up the proper min and max values

User · Answer

Imho one of the simplest Solutions is   -     MIN NUMBER Collections sort listOfNumbers   listOfNumbers get 0      MAX NUMBER Collections sort listOfNumbers   Collections reverse listOfNumbers   listOfNumbers get 0

User · Answer

your maximum  minimum method is right  but you don t print int to console   and    maybe better location change  maximum  minimum  methods   now  maximum  minimum  methods  in the roop  it is need not   just need one call  i suggest change this code      for  int i   0   i  lt  array length  i              int next   input nextInt              sentineil that will stop loop when 999 is entered        if  next    999         break         array i    next    System out println  max Value       getMaxValue array    System out println  min Value       getMinValue array    System out println  These are the numbers you have entered     printArray array

User · Answer

import java util    class Maxmin       public static void main String args                  int   arr   new int 10           Scanner in   new Scanner System in           int i  min 0  max 0          for i 0  i lt  arr length  i                          System out print  Enter any number                  arr i    in nextInt                                min   arr 0           for i 0  i lt  9  i                          if arr i   gt  max                                max   arr i                             if arr i   lt  min                                min   arr i                                   System out println  Maximum is      max           System out println  Minimum is      min

User · Answer

getMaxValue array      get smallest number getMinValue array     You are calling the methods but not using the returned values   System out println getMaxValue array    System out println getMinValue array

User · Answer

You just throw away Min Max values        get biggest number   getMaxValue array       lt - getMaxValue returns value  which is ignored      get smallest number   getMinValue array       lt - getMinValue returns value  which is ignored as well   You can do something like           array i    next     System out print  Max value         System out println getMaxValue array        lt - Print out getMaxValue value    System out print  Min value         System out println getMinValue array        lt - Print out getMinValue value

User · Answer

To Find Max and Min value in an array without sorting in java  import java util Scanner  import java util    public class MaxMin WoutSort    public static void main String args               int n max Integer MIN VALUE min Integer MAX VALUE        System out println  Enter the number of elements            Scanner sc   new Scanner System in          int   arr   new int sc nextInt       U can t say static or dynamic                                             UnWrapping object sc to int value sc nextInt         System out println  Enter the elements            for int i 0 i lt arr length i           Loop for entering values in array                   int next   sc nextInt              arr i    next                for int j 0 j lt arr length j                     if arr j  gt max                  Maximum Condition             max   arr j             else if arr j  lt min            Minimum Condition               min   arr j               System out println  Highest Value in array     max        System out println  Smallest Value in array    min

User · Answer

You can try this too  If you don t want to do this by your method       Arrays sort arr       System out println  Min value   arr 0        System out println  Max value   arr arr length-1

User · Answer

Sum  Maximum and Minimum value of an Array in One Line   public static void getMinMaxByArraysMethods int   givenArray             Sum of Array in One Line         long sumofArray    Arrays stream givenArray  sum              get Minimum Value in an array in One Line         int minimumValue   Arrays stream givenArray  min   getAsInt               Get Maximum Value of an Array in One Line         int MaxmumValue    Arrays stream givenArray  max   getAsInt

[java] Java Minimum and Maximum values in Array

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