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Task/Sorting-algorithms-Strand-sort/Phix/sorting-algorithms-strand-sort.phix

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+function merge(sequence left, sequence right)
+sequence result = {}
+    while length(left)>0 and length(right)>0 do
+        if left[$]<=right[1] then
+            exit
+        elsif right[$]<=left[1] then
+            return result & right & left
+        elsif left[1]<right[1] then
+            result = append(result,left[1])
+            left = left[2..$]
+        else
+            result = append(result,right[1])
+            right = right[2..$]
+        end if
+    end while
+    return result & left & right
+end function
+
+function strand_sort(sequence s)
+integer j
+sequence result = {}
+    while length(s)>0 do
+        j = length(s)
+        for i=1 to length(s)-1 do
+            if s[i]>s[i+1] then
+                j = i
+                exit
+            end if
+        end for
+        result = merge(result,s[1..j])
+        s = s[j+1..$]
+    end while
+    return result
+end function