diff --git a/sorting and basics/cycle_sort.py b/sorting and basics/cycle_sort.py
new file mode 100644
index 0000000..5d34b96
--- /dev/null
+++ b/sorting and basics/cycle_sort.py	
@@ -0,0 +1,47 @@
+def cycle_sort(array: list) -> list:
+    """
+    >>> cycle_sort([4, 3, 2, 1])
+    [1, 2, 3, 4]
+
+    >>> cycle_sort([-4, 20, 0, -50, 100, -1])
+    [-50, -4, -1, 0, 20, 100]
+
+    >>> cycle_sort([-.1, -.2, 1.3, -.8])
+    [-0.8, -0.2, -0.1, 1.3]
+
+    >>> cycle_sort([])
+    []
+    """
+    array_len = len(array)
+    for cycle_start in range(0, array_len - 1):
+        item = array[cycle_start]
+
+        pos = cycle_start
+        for i in range(cycle_start + 1, array_len):
+            if array[i] < item:
+                pos += 1
+
+        if pos == cycle_start:
+            continue
+
+        while item == array[pos]:
+            pos += 1
+
+        array[pos], item = item, array[pos]
+        while pos != cycle_start:
+            pos = cycle_start
+            for i in range(cycle_start + 1, array_len):
+                if array[i] < item:
+                    pos += 1
+
+            while item == array[pos]:
+                pos += 1
+
+            array[pos], item = item, array[pos]
+
+    return array
+
+
+if __name__ == "__main__":
+    assert cycle_sort([4, 5, 3, 2, 1]) == [1, 2, 3, 4, 5]
+    assert cycle_sort([0, 1, -10, 15, 2, -2]) == [-10, -2, 0, 1, 2, 15]
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