1 files changed, 20 insertions, 0 deletions
diff --git a/challenge-228/sgreen/python/ch-1.py b/challenge-228/sgreen/python/ch-1.py
new file mode 100755
index 0000000000..039b606169
--- /dev/null
+++ b/challenge-228/sgreen/python/ch-1.py
@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def main(ints):
+    # Get the frequency of all numbers
+    freq = {}
+    for i in ints:
+        freq[i] = 1 + freq.get(i, 0)
+
+    # Get the sum of all unique values
+    solution = sum(i for i in freq if freq[i] == 1)
+    print(solution)
+
+
+if __name__ == '__main__':
+    # Convert input into integers
+    array = [int(n) for n in sys.argv[1:]]
+    main(array)