2 files changed, 40 insertions, 0 deletions
diff --git a/challenge-306/eric-cheung/python/ch-1.py b/challenge-306/eric-cheung/python/ch-1.py
new file mode 100755
index 0000000000..1f6acfd4ab
--- /dev/null
+++ b/challenge-306/eric-cheung/python/ch-1.py
@@ -0,0 +1,22 @@
+
+arrInts = [2, 5, 3, 6, 4]  ## Example 1
+## arrInts = [1, 3]  ## Example 2
+
+## ===== METHOD 1 =====
+## nSum = 0
+
+## for nLen in range(1, len(arrInts) + 1, 2):
+    ## ## print (nLen)
+
+    ## for nPos in range(len(arrInts) + 1 - nLen):
+        ## ## print (arrInts[nPos:nPos + nLen])
+        ## nSum = nSum + sum(arrInts[nPos:nPos + nLen])
+
+## print (nSum)
+## ===== METHOD 1 =====
+
+## ===== METHOD 2 =====
+arrSum = [sum(arrInts[nPos:nPos + nLen]) for nLen in range(1, len(arrInts) + 1, 2) for nPos in range(len(arrInts) + 1 - nLen)]
+
+print (sum(arrSum))
+## ===== METHOD 2 =====
diff --git a/challenge-306/eric-cheung/python/ch-2.py b/challenge-306/eric-cheung/python/ch-2.py
new file mode 100755
index 0000000000..71a2f127a8
--- /dev/null
+++ b/challenge-306/eric-cheung/python/ch-2.py
@@ -0,0 +1,18 @@
+
+## arrInts = [3, 8, 5, 2, 9, 2]  ## Example 1
+arrInts = [3, 2, 5]  ## Example 2
+
+while len(arrInts) > 1:
+    arrInts = sorted(arrInts)
+    
+    nY = arrInts[-1]
+    nX = arrInts[-2]
+
+    del arrInts[-2]
+    del arrInts[-1]
+
+    if nY > nX:
+        arrInts.append(nY - nX)
+
+print (0 if len(arrInts) == 0 else arrInts[0])
+