From 8c709f314b9ff11568342684891c466aab170bdd Mon Sep 17 00:00:00 2001
From: Mohammad Sajid Anwar <mohammad.anwar@yahoo.com>
Date: Tue, 17 Sep 2024 10:23:54 +0100
Subject: - Added solutions by PokGoPun. - Added solutions by Eric Cheung. -
 Added solutions by Conor Hoekstra.

---
 challenge-287/eric-cheung/python/ch-1.py | 58 ++++++++++++++++++++++++++++++++
 challenge-287/eric-cheung/python/ch-2.py | 45 +++++++++++++++++++++++++
 2 files changed, 103 insertions(+)
 create mode 100755 challenge-287/eric-cheung/python/ch-1.py
 create mode 100755 challenge-287/eric-cheung/python/ch-2.py

diff --git a/challenge-287/eric-cheung/python/ch-1.py b/challenge-287/eric-cheung/python/ch-1.py
new file mode 100755
index 0000000000..63e1bc3931
--- /dev/null
+++ b/challenge-287/eric-cheung/python/ch-1.py
@@ -0,0 +1,58 @@
+
+## strInput = "a"  ## Example 1
+## strInput = "aB2"  ## Example 2
+## strInput = "PaaSW0rd"  ## Example 3
+## strInput = "Paaasw0rd"  ## Example 4
+strInput = "aaaaa"  ## Example 5
+
+nDupChar = 3
+
+nLenCharAdd = (0 if len(strInput) >= 6 else 6 - len(strInput))
+
+nLenUpperAdd = (0 if any(strLoop.isupper() for strLoop in strInput) else 1)
+nLenLowerAdd = (0 if any(strLoop.islower() for strLoop in strInput) else 1)
+nIsNumericAdd = (0 if any(strLoop.isnumeric() for strLoop in strInput) else 1)
+
+nCharSumAdd = sum([nLenUpperAdd, nLenLowerAdd, nIsNumericAdd])
+
+## ==
+arrList = list(strInput)
+arrUniqList = set(arrList)
+arrDupList = [charLoop for charLoop in set(arrList) if arrList.count(charLoop) >= 3]
+
+arrCheckList = []
+arrSubCheckList = []
+arrCheckIndx = []
+for nIndx, charLoop in enumerate(arrList):
+    if charLoop not in arrDupList:
+        continue
+
+    if len(arrSubCheckList) == 0:
+        arrSubCheckList.append([charLoop, [nIndx]])
+    elif arrSubCheckList[-1][0] == charLoop and nIndx - arrSubCheckList[-1][1][-1] == 1:
+        arrSubCheckList[-1][1].append(nIndx)
+    else:
+        arrCheckList = arrCheckList + arrSubCheckList
+        arrSubCheckList = []
+        arrSubCheckList.append([charLoop, [nIndx]])
+
+if len(arrSubCheckList) > 0:
+    arrCheckList = arrCheckList + arrSubCheckList
+    arrSubCheckList = []
+
+for arrLoop in arrCheckList:
+    if len(arrLoop[1]) < nDupChar:
+        continue
+
+    for nSubIndx in range(nDupChar - 1, len(arrLoop[1]), nDupChar):
+        arrCheckIndx.append(nSubIndx)
+
+nLenChange = len(arrCheckIndx)
+## ==
+
+nTemp = (nCharSumAdd - nLenCharAdd if nCharSumAdd >= nLenCharAdd else 0)
+nTemp = (nTemp - nLenChange if nTemp >= nLenChange else 0)
+
+nTotalSteps = nLenCharAdd + nLenChange + nTemp
+
+print (nTotalSteps)
diff --git a/challenge-287/eric-cheung/python/ch-2.py b/challenge-287/eric-cheung/python/ch-2.py
new file mode 100755
index 0000000000..ede897bb14
--- /dev/null
+++ b/challenge-287/eric-cheung/python/ch-2.py
@@ -0,0 +1,45 @@
+
+def IsValidDef (strFunc, bAllowDecimal):
+    if not bAllowDecimal and "." in strFunc:
+        return False
+
+    if strFunc == ".":
+        return False
+
+    if (strFunc[0] in ["+", "-"]):
+        strFunc = strFunc[1:]
+
+    arrPart = strFunc.split(".")
+
+    if len(arrPart) > 2:
+        return False
+
+    for strLoop in arrPart:
+        if not strLoop:
+            continue
+        if not strLoop.isnumeric():
+            return False
+
+    return True
+
+def IsValidNum (strFunc):
+    arrPart = strFunc.lower().split("e")
+
+    if len(arrPart) > 2:
+        return False
+
+    for nIndx, strLoop in enumerate(arrPart):
+        if not IsValidDef (strLoop, nIndx == 0):
+            return False
+
+    return True
+
+## strInput = "1"  ## Example 1
+## strInput = "a"  ## Example 2
+## strInput = "."  ## Example 3
+## strInput = "1.2e4.2"  ## Example 4
+## strInput = "-1."  ## Example 5
+## strInput = "+1E-8"  ## Example 6
+strInput = ".44"  ## Example 7
+
+print (IsValidNum(strInput))
-- 
cgit