Largest and smallest number in an array

Question

This works perfectly   but when I use foreach instead of for this doesn t works  I can t understand for and foreach are same   namespace ConsoleApplication2       class Program               static void Main string   args                        int   array   new int 10               Console WriteLine  enter the array elements to b sorted                for int i 0 i lt 10 i                                  array i    Convert ToInt32 Console ReadLine                               int smallest   array 0               for int i 0 i lt 10 i                                   if array i  lt smallest                                        smallest array i                                                int largest   array 9               for int i 0 i lt 10 i                                   if  array i   gt  largest                                        largest   array i                                                Console WriteLine  the smallest no is  0    smallest               Console WriteLine  the largest no is  0    largest               Console Read

User · Answer

Generic extension method  Gets Min and Max in one iteration    public static class MyExtension       public static  T Min  T Max  MinMax lt T gt  this IEnumerable lt T gt  source  where T   IComparable lt T gt                if  source    null                        throw new ArgumentNullException nameof source                       T min   source FirstOrDefault            T max   source FirstOrDefault             foreach  T item in source                        if  item CompareTo min     -1                                min   item                            if  item CompareTo max     1                                max   item                                   return  Min  min  Max  max                 This code used C  7  Tuple

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static void PrintSmallestLargest int   arr                if  arr Length  gt  0                        int small   arr 0               int large   arr 0               for  int i   0  i  lt  arr Length  i                                  if  large  lt  arr i                                         int tmp   large                      large   arr i                       arr i    large                                    if  small  gt  arr i                                         int tmp   small                      small   arr i                       arr i    small                                              Console WriteLine  Smallest is  0    small               Console WriteLine  Largest is  0    large                     This way you can have smallest and largest number in a single loop

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using System  using System Collections Generic  using System Linq  using System Text   namespace Array Small and lagest       class Program           static void Main string   args                int   array   new int 10               Console WriteLine  enter the array elements to b sorted                for  int i   0  i  lt  10  i                      array i    Convert ToInt32 Console ReadLine                               int smallest   array 0               foreach  int i in array                    if  i  lt  smallest                        smallest   i                                                  int largest   array 9               foreach  int i in array                        if  i  gt  largest                        largest   i                                                  Console WriteLine  the smallest no is  0    smallest               Console WriteLine  the largest no is  0    largest               Console Read

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Here is the complete programme give Below   using System  using System Collections Generic  using System Linq  using System Text  using System Threading Tasks  using System Threading  using System Diagnostics   namespace oops3         public class Demo                static void Main string   args                        Console WriteLine  Enter the size of the array                int x   Convert ToInt32 Console ReadLine                 int   arr   new int x               Console WriteLine  Enter the elements of the array                for int i 0 i lt x i                                  arr i    Convert ToInt32 Console ReadLine                               int smallest   arr 0               int Largest   arr 0               for int i 0 i lt x i                                  if smallest gt arr i                                         smallest   arr i                                               for  int i   0  i  lt  x  i                                  if  Largest lt  arr i                                         Largest   arr i                                               Console WriteLine  The greater No in the array     Largest               Console WriteLine  The smallest No in the array     smallest               Console ReadLine

User · Answer

Why are you not using this   int   array     12  56  89  65  61  36  45  23    int max   array Max    int min   array Min

User · Answer

It is a long time  Maybe like this       public int smallestValue int   values                int smallest   int MaxValue           for  int i   0  i  lt  values Length  i                          smallest    values i   lt  smallest   values i    smallest                      return smallest              public static int largestvalue int   values                int largest   int MinValue           for  int i   0  i  lt  values Length  i                          largest    values i   gt  largest   values i    largest                      return largest

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public int MinimumValue   get  private set        public int MaxmimumValue   get  private set         public void num                 int   array     12  56  89  65  61  36  45  23            MaxmimumValue   array 0           MinimumValue   array 0            foreach  int num in array                          if  num  gt  MaxmimumValue  MaxmimumValue   num              if  num  lt  MinimumValue  MinimumValue   num                    Console WriteLine MinimumValue           Console WriteLine MaxmimumValue

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Int   number   1 2 3 4 5 6 7 8 9 10   Int  Result   null   foreach Int i in number                If  Result HasValue    i lt  Result                           Result  i                          Console WriteLine Result

User · Answer

You  normally  cannot modify the collection you are iterating over when using foreach   Although for and foreach seem to be similar from a developer perspective they are quite different from an implementation perspective   Foreach uses an Iterator to access the individual objects while for doesn t know  or care  about the underlying object sequence

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using System   namespace greatest        class Greatest               public static void Main String   args                             get the number of elements             Console WriteLine  enter the number of elements                int i              i Convert ToInt32 Console ReadLine                 int   abc   new int i                          accept the elements             for int size -1  size lt i  size                                  Console WriteLine  enter the elements                    abc size  Convert ToInt32 Console ReadLine                                 Greatest             int max abc Max                int min abc Min                Console WriteLine  the m   max               Console WriteLine  the mi   min                Console Read

User · Answer

If you need to use foreach  for some reason  and don t want to use bult-in functions  here is a code snippet   int minint   array 0   int maxint   array 0   foreach  int value in array      if  value  lt  minint  minint   value    if  value  gt  maxint  maxint   value

[c#] Largest and smallest number in an array

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