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diff --git a/reverse-selection-sort.py b/reverse-selection-sort.py
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+#!/bin/python3
+
+# ---------- Selection Sort
+# Python implementation of the selection sort algorithm
+# n^n complexity, so it will start to chug on larger datasets.
+
+
+# ---------- Imported modules
+import inputoutput as io
+import csv
+import sys
+
+
+# ---------- Main
+
+# ingress of data
+target = sys.argv[1]
+numdata = io.ingressCSV(target)
+
+# selection sort algorithm
+for i in range(len(numdata)):
+    mindex = i
+    
+    for j in range(i+1, len(numdata)):
+        if numdata[mindex] < numdata[j]:#FIXME: changing comparator to reverse function
+            mindex = j
+
+    # updating values using simultaneous assignments
+    numdata[i], numdata[mindex] =  numdata[mindex], numdata[i]
+
+# finishing up
+print("Sort complete, writing to file!")
+io.egressCSV(numdata,target)