From 43ba87df5e3aaa950fcf8ef55152105fe311276f Mon Sep 17 00:00:00 2001
From: Mohammad S Anwar <mohammad.anwar@yahoo.com>
Date: Tue, 20 Feb 2024 15:39:29 +0000
Subject: - Added solutions by Dave Jacoby. - Added solutions by Eric Cheung. -
 Added solutions by Mohammad Meraj Zia. - Added solutions by Mark Anderson. -
 Added solutions by Luca Ferrari. - Added solutions by Bob Lied. - Added
 solutions by Jaldhar H. Vyas. - Added solutions by David Ferrone. - Added
 solutions by Thomas Kohler. - Added solutions by Mariano Spadaccini. - Added
 solutions by PokGoPun. - Added solutions by Roger Bell_West.

---
 challenge-257/eric-cheung/python/ch-1.py |  9 ++++++++
 challenge-257/eric-cheung/python/ch-2.py | 35 ++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+)
 create mode 100755 challenge-257/eric-cheung/python/ch-1.py
 create mode 100755 challenge-257/eric-cheung/python/ch-2.py

(limited to 'challenge-257/eric-cheung/python')

diff --git a/challenge-257/eric-cheung/python/ch-1.py b/challenge-257/eric-cheung/python/ch-1.py
new file mode 100755
index 0000000000..5b438b92e1
--- /dev/null
+++ b/challenge-257/eric-cheung/python/ch-1.py
@@ -0,0 +1,9 @@
+
+## arrInt = [5, 2, 1, 6]  ## Example 1
+## arrInt = [1, 2, 0, 3]  ## Example 2
+## arrInt = [0, 1]  ## Example 3
+arrInt = [9, 4, 9, 2]  ## Example 4
+
+arrOutput = [len([arrInt[nColLoop] for nColLoop in range(len(arrInt)) if nColLoop != nRowLoop and arrInt[nColLoop] < arrInt[nRowLoop]]) for nRowLoop in range(len(arrInt))]
+
+print (arrOutput)
diff --git a/challenge-257/eric-cheung/python/ch-2.py b/challenge-257/eric-cheung/python/ch-2.py
new file mode 100755
index 0000000000..3b13af9e91
--- /dev/null
+++ b/challenge-257/eric-cheung/python/ch-2.py
@@ -0,0 +1,35 @@
+
+## arrMatrix = [[1, 0, 0, 1], [0, 1, 0, 2], [0, 0, 1, 3]]
+## arrMatrix = [[1, 1, 0], [0, 1, 0], [0, 0, 0]]  ## Example 1
+## arrMatrix = [[0, 1, -2, 0, 1], [0, 0, 0, 1, 3], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]]  ## Example 2
+## arrMatrix = [[1, 0, 0, 4], [0, 1, 0, 7], [0, 0, 1, -1]]  ## Example 3
+## arrMatrix = [[0, 1, -2, 0, 1], [0, 0, 0, 0, 0], [0, 0, 0, 1, 3], [0, 0, 0, 0, 0]]  ## Example 4
+## arrMatrix = [[0, 1, 0], [1, 0, 0], [0, 0, 0]]  ## Example 5
+arrMatrix = [[4, 0, 0, 0], [0, 1, 0, 7], [0, 0, 1, -1]]  ## Example 6
+
+t_arrMatrix = [arrLoop for arrLoop in zip(*arrMatrix)]
+
+## print (t_arrMatrix)
+
+arrLead_1_Pos = [-1 if len([1 for arrColLoop in arrRowLoop if arrColLoop == 1]) == 0 else min([nIndx for nIndx, arrColLoop in enumerate(arrRowLoop) if arrColLoop == 1]) for arrRowLoop in arrMatrix]
+
+## print (arrLead_1_Pos)
+
+arrLead_1_Positive = [nLoop for nLoop in arrLead_1_Pos if nLoop >= 0]
+arrLead_1_Pos_Positive = [nIndx for nIndx, nLoop in enumerate(arrLead_1_Pos) if nLoop >= 0]
+arrLead_1_Pos_Negative = [nIndx for nIndx, nLoop in enumerate(arrLead_1_Pos) if nLoop < 0]
+
+## print (arrLead_1_Positive)
+## print (arrLead_1_Pos_Positive)
+## print (arrLead_1_Pos_Negative)
+
+bResult = (sorted(arrLead_1_Positive) == arrLead_1_Positive)
+if bResult and len(arrLead_1_Pos_Negative) > 0:
+    bResult = (arrLead_1_Pos_Positive[-1] < arrLead_1_Pos_Negative[0])
+if bResult:
+    for arrLoop in t_arrMatrix[:-1]:
+        if sum([0 if rLoop == 0 else 1 for rLoop in arrLoop]) > 1:
+            bResult = False
+            break
+
+print (1 if bResult else 0)
-- 
cgit