- Added solutions by Roger Bell_West.

- Added solutions by Robert DiCicco.
- Added solutions by Ulrich Rieke.
- Added solutions by Laurent Rosenfeld.
- Added solutions by Niels van Dijke.
- Added solutions by Simon Proctor.
- Added solutions by Mark Anderson.
- Added solutions by Peter Meszaros.
- Added solutions by W. Luis Mochan.
- Added solutions by David Ferrone.
- Added solutions by Thomas Kohler.
- Added solutions by Stephen G. Lynn.
- Added solutions by Peter Campbell Smith.
- Added solutions by E. Choroba.
- Added solutions by Robbie Hatley.
- Added solutions by Jorg Sommrey.
- Added solutions by Cheok-Yin Fung.
- Added solutions by Robert Ransbottom.
- Added solutions by Flavio Poletti.
- Added solutions by Jaldhar H. Vyas.
- Added solutions by Avery Adams.
- Added solutions by Bob Lied.
- Added solutions by Athanasius.
- Added solutions by Simon Green.
- Added solutions by Jan Krnavek.
- Added solutions by Lubos Kolouch.
- Added solutions by BarrOff.
- Added solutions by Solathian.
- Added solutions by Matthias Muth.

2 files changed, 87 insertions, 0 deletions

diff --git a/challenge-220/robert-dicicco/python/ch-1.py b/challenge-220/robert-dicicco/python/ch-1.py
new file mode 100644
index 0000000000..632e169c46
--- /dev/null
+++ b/challenge-220/robert-dicicco/python/ch-1.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+# ------------------------------------------------
+# AUTHOR: Robert DiCicco
+# DATE  : 2023-06-05
+# Challenge 220 Task 1 common Characters ( Python )
+# ------------------------------------------------
+
+words = [["Perl", "Rust", "Raku"], ["love", "live", "leave"]]
+
+alphabet_hash = {}
+
+for wds in words:
+    for char in range(ord('a'), ord('z')+1):
+        alphabet_hash[chr(char)] = 0
+
+    print("Input: @words = ",wds)
+    for wd in wds:
+        wd = wd.lower()
+        for ch in wd:
+            alphabet_hash[ch] += 1
+
+    print("Output: ",end= " ")
+    for i in alphabet_hash:
+        if alphabet_hash[i] >= 3:
+            print(i,end=" ")
+    print("\n")
+
+# ------------------------------------------------
+# SAMPLE OUTPUT
+# python .\CommonChars.py
+
+# Input: @words =  ['Perl', 'Rust', 'Raku']
+# Output:  r
+
+# Input: @words =  ['love', 'live', 'leave']
+# Output:  e l v
+
+# ------------------------------------------------
diff --git a/challenge-220/robert-dicicco/python/ch-2.py b/challenge-220/robert-dicicco/python/ch-2.py
new file mode 100644
index 0000000000..550194cb55
--- /dev/null
+++ b/challenge-220/robert-dicicco/python/ch-2.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+# ------------------------------------------
+# AUTHOR: Robert DiCicco
+# DATE  : 2023-06-00
+# Challenge 220 Task 2 Squareful ( Python )
+# ------------------------------------------
+import math
+from itertools import permutations
+
+
+myints = [[1,8,17],[1,8,17,19]]
+
+def IsPerfectSquare(number_to_test) :
+    root = math.floor(math.sqrt(number_to_test))
+    if ((root ** 2 ) == number_to_test) :
+        return True;
+    return False;
+
+for intsub in myints:
+    print("Input: @ints = ",intsub)
+    print("OutPut: ",end="")
+    perm = permutations(intsub)
+    for i in list(perm):
+        ln = len(i) - 1
+        tv = 0
+        flag = 0
+        while tv < ln :
+            if IsPerfectSquare(i[tv] + i[tv + 1]) :
+                flag += 1
+            else :
+                flag = 0
+            tv += 1
+        if flag == ln - 1 :
+             print(i,end=" ")
+    print("\n")
+
+#------------------------------------------
+# SAMPLE OUTPUT
+# python .\Squareful.py
+
+# Input: @ints =  [1, 8, 17]
+# OutPut: (1, 17, 8) (17, 1, 8)
+
+# Input: @ints =  [1, 8, 17, 19]
+# OutPut: (1, 19, 17, 8) (19, 1, 8, 17)
+#------------------------------------------
+
+
+