2 files changed, 62 insertions, 0 deletions
diff --git a/challenge-207/eric-cheung/python/ch-1.py b/challenge-207/eric-cheung/python/ch-1.py
new file mode 100755
index 0000000000..57ddd9e817
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+++ b/challenge-207/eric-cheung/python/ch-1.py
@@ -0,0 +1,30 @@
+
+arrKeyBoardRow = ["qwertyuiop", "asdfghjkl", "zxcvbnm"]
+
+arrInputWords = ["Hello", "Alaska", "Dad", "Peace"]  ## Example 1
+## arrInputWords = ["OMG", "Bye"]  ## Example 2
+
+arrKeyBoardChar = []
+for arrLoop in arrKeyBoardRow:
+    arrKeyBoardChar.append(list(arrLoop))
+
+arrOutputWords = []
+
+for arrLoop in arrInputWords:
+
+    strLoopLower = arrLoop.lower()
+
+    for nIndx in range(0, len(arrKeyBoardChar)):
+        if strLoopLower[0] in arrKeyBoardChar[nIndx]:
+            break
+
+    bSameRow = True
+    for nLoop in range(1, len(arrLoop)):
+        if strLoopLower[nLoop] not in arrKeyBoardChar[nIndx]:
+            bSameRow = False
+            break
+
+    if bSameRow:
+        arrOutputWords.append(arrLoop)
+
+print (arrOutputWords)
diff --git a/challenge-207/eric-cheung/python/ch-2.py b/challenge-207/eric-cheung/python/ch-2.py
new file mode 100755
index 0000000000..b2da387f6b
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+++ b/challenge-207/eric-cheung/python/ch-2.py
@@ -0,0 +1,32 @@
+
+## https://gist.github.com/restrepo/c5f8f9fd5504a3f93ae34dd10a5dd6b0
+
+def hIndex(arrCitation):
+
+    ### https://github.com/kamyu104/LeetCode/blob/master/Python/h-index.py
+    ### :type arrCitation: List[int]
+    ### :rtype: int
+
+    ### Given an array of citations (each citation is a non-negative integer)
+    ### of a researcher, write a function to compute the researcher's h-index.
+    ### 
+    ### According to the definition of h-index on Wikipedia: 
+    ### "A scientist has index h if h of his/her N papers have
+    ### at least h citations each, and the other N − h papers have
+    ### no more than h citations each."
+    ### 
+    ### For example, given arrCitation = [3, 0, 6, 1, 5], 
+    ### which means the researcher has 5 papers in total
+    ### and each of them had received 3, 0, 6, 1, 5 citations respectively. 
+    ### Since the researcher has 3 papers with at least 3 citations each and 
+    ### the remaining two with no more than 3 citations each, his h-index is 3.
+    ### 
+    ### Note: If there are several possible values for h, the maximum one is taken as the h-index.
+
+    return sum(nLoop >= nIndx + 1 for nIndx, nLoop in enumerate(sorted(list(arrCitation), reverse = True)))
+
+
+## arrInputCitation = [10, 8, 5, 4, 3]  ## Example 1
+arrInputCitation = [25, 8, 5, 3, 3]  ## Example 2
+
+print (hIndex(arrInputCitation))