2 files changed, 46 insertions, 0 deletions
diff --git a/challenge-273/eric-cheung/python/ch-1.py b/challenge-273/eric-cheung/python/ch-1.py
new file mode 100755
index 0000000000..e01e8f5dca
--- /dev/null
+++ b/challenge-273/eric-cheung/python/ch-1.py
@@ -0,0 +1,31 @@
+
+def round(dInput):
+    return int(dInput) + (1 if dInput - int(dInput) >= 0.5 else 0)
+
+## Example 1
+strInput = "perl"
+strChar = "e"
+
+## Example 2
+## strInput = "java"
+## strChar = "a"
+
+## Example 3
+## strInput = "python"
+## strChar = "m"
+
+## Example 4
+## strInput = "ada"
+## strChar = "a"
+
+## Example 5
+## strInput = "ballerina"
+## strChar = "l"
+
+## Example 6
+## strInput = "analitik"
+## strChar = "k"
+
+nPercent = round(strInput.count(strChar) * 100 / len(strInput))
+
+print (nPercent)
diff --git a/challenge-273/eric-cheung/python/ch-2.py b/challenge-273/eric-cheung/python/ch-2.py
new file mode 100755
index 0000000000..2b9c57d362
--- /dev/null
+++ b/challenge-273/eric-cheung/python/ch-2.py
@@ -0,0 +1,15 @@
+
+## strInput = "aabb"  ## Example 1
+## strInput = "abab"  ## Example 2
+## strInput = "aaa"  ## Example 3
+strInput = "bbb"  ## Example 4
+
+if strInput.count("b") <= 1:
+    print (False)
+else:
+    nFirstBPos = strInput.index("b")
+
+    nNumOfA = strInput[nFirstBPos + 1:].count("a")
+    nNumOfB = strInput[nFirstBPos + 1:].count("b")
+
+    print (nNumOfA == 0 and nNumOfB > 0)