Initial data commit

Task/Sorting-algorithms-Comb-sort/Fortran/sorting-algorithms-comb-sort.f

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+program Combsort_Demo
+  implicit none
+
+  integer, parameter :: num = 20
+  real :: array(num)
+
+  call random_seed
+  call random_number(array)
+  write(*,*) "Unsorted array:-"
+  write(*,*) array
+  write(*,*)
+  call combsort(array)
+  write(*,*) "Sorted array:-"
+  write(*,*) array
+
+contains
+
+  subroutine combsort(a)
+
+    real, intent(in out) :: a(:)
+    real :: temp
+    integer :: i, gap
+    logical :: swapped = .true.
+
+    gap = size(a)
+    do while (gap > 1 .or. swapped)
+      gap = gap / 1.3
+      if (gap < 1) gap = 1
+      swapped = .false.
+      do i = 1, size(a)-gap
+        if (a(i) > a(i+gap)) then
+          temp = a(i)
+          a(i) = a(i+gap)
+          a(i+gap) = temp;
+          swapped = .true.
+        end if
+      end do
+    end do
+
+  end subroutine combsort
+
+end program Combsort_Demo