From 26d3aa51bc50bdd800d2a4b9556120d94a5f99af Mon Sep 17 00:00:00 2001
From: Mohammad S Anwar <mohammad.anwar@yahoo.com>
Date: Tue, 29 Nov 2022 10:40:34 +0000
Subject: - Added guest contributions by Eric Cheung.

---
 challenge-193/eric-cheung/python/ch-1.py | 12 ++++++++++++
 challenge-193/eric-cheung/python/ch-2.py | 19 +++++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100755 challenge-193/eric-cheung/python/ch-1.py
 create mode 100755 challenge-193/eric-cheung/python/ch-2.py

diff --git a/challenge-193/eric-cheung/python/ch-1.py b/challenge-193/eric-cheung/python/ch-1.py
new file mode 100755
index 0000000000..5b4ca78f08
--- /dev/null
+++ b/challenge-193/eric-cheung/python/ch-1.py
@@ -0,0 +1,12 @@
+
+from itertools import product
+
+## nInput = 2  ## Example 1
+nInput = 3  ## Example 2
+
+arrStrOutput = []
+
+for arrIndx in product(range(2), repeat = nInput):
+    arrStrOutput.append("".join([str(nIndx) for nIndx in arrIndx]))
+
+print (arrStrOutput)
diff --git a/challenge-193/eric-cheung/python/ch-2.py b/challenge-193/eric-cheung/python/ch-2.py
new file mode 100755
index 0000000000..a28f7f0aac
--- /dev/null
+++ b/challenge-193/eric-cheung/python/ch-2.py
@@ -0,0 +1,19 @@
+
+def GetDiffStr(strInput):
+    return ",".join([str(ord(strInput[nIndx]) - ord(strInput[nIndx - 1])) for nIndx in range(1, len(strInput))])
+
+## arrInputStr = ["adc", "wzy", "abc"]  ## Example 1
+arrInputStr = ["aaa", "bob", "ccc", "ddd"]  ## Example 2
+
+arrStrAppend = []
+strOdd = ""
+
+for strLoop in arrInputStr:
+    arrStrAppend.append(GetDiffStr(strLoop))
+
+for nIndxLoop, strLoop in enumerate(arrStrAppend):
+    if arrStrAppend.count(strLoop) == 1:
+        strOdd = arrInputStr[nIndxLoop]
+        break
+
+print (strOdd)
-- 
cgit