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Task/Sorting-algorithms-Strand-sort/Nim/sorting-algorithms-strand-sort.nim

@@ -0,0 +1,32 @@
+proc mergeList[T](a, b: var seq[T]): seq[T] =
+  result = @[]
+  while a.len > 0 and b.len > 0:
+    if a[0] < b[0]:
+      result.add a[0]
+      a.delete 0
+    else:
+      result.add b[0]
+      b.delete 0
+  result.add a
+  result.add b
+
+proc strand[T](a: var seq[T]): seq[T] =
+  var i = 0
+  result = @[a[0]]
+  a.delete 0
+  while i < a.len:
+    if a[i] > result[result.high]:
+      result.add a[i]
+      a.delete i
+    else:
+      inc i
+
+proc strandSort[T](a: seq[T]): seq[T] =
+  var a = a
+  result = a.strand
+  while a.len > 0:
+    var s = a.strand
+    result = mergeList(result, s)
+
+var a = @[1, 6, 3, 2, 1, 7, 5, 3]
+echo a.strandSort