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diff --git a/challenge-255/spadacciniweb/python/ch-1.py b/challenge-255/spadacciniweb/python/ch-1.py
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+# Task 1: Odd Character
+# Submitted by: Mohammad Sajid Anwar
+# 
+# You are given two strings, $s and $t. The string $t is generated using the shuffled characters of the string $s with an additional character.
+# Write a script to find the additional character in the string $t..
+# 
+# Example 1
+# Input: $s = "Perl" $t = "Preel"
+# Output: "e"
+# 
+# Example 2
+# Input: $s = "Weekly" $t = "Weeakly"
+# Output: "a"
+# 
+# Example 3
+# Input: $s = "Box" $t = "Boxy"
+# Output: "y"
+
+from collections import Counter
+
+def odd_character(s, t):
+    counts=Counter(s)
+
+    for i in t:
+        counts[i] -= 1
+    print("Output:", s, "|", t, "-> %s" %(list(counts.keys())[list(counts.values()).index(-1)]))
+
+if __name__ == "__main__":
+    s = 'Perl'
+    t = "Preel"
+    odd_character(s, t)
+
+    s = "Weekly"
+    t = "Weeakly"
+    odd_character(s, t)
+
+    s = "Box"
+    t = "Boxy"
+    odd_character(s, t)
diff --git a/challenge-255/spadacciniweb/python/ch-2.py b/challenge-255/spadacciniweb/python/ch-2.py
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+# Task 2: Most Frequent Word
+# Submitted by: Mohammad Sajid Anwar
+# 
+# You are given a paragraph $p and a banned word $w.
+# Write a script to return the most frequent word that is not banned.
+# 
+# Example 1
+# Input: $p = "Joe hit a ball, the hit ball flew far after it was hit."
+#        $w = "hit"
+# Output: "ball"
+# 
+# The banned word "hit" occurs 3 times.
+# The other word "ball" occurs 2 times.
+# 
+# Example 2
+# Input: $p = "Perl and Raku belong to the same family. Perl is the most popular language in the weekly challenge."
+#        $w = "the"
+# Output: "Perl"
+# 
+# The banned word "the" occurs 3 times.
+# The other word "Perl" occurs 2 times.
+
+def count(w, dictionary):
+    if w in dictionary:
+        dictionary[w] += 1
+    else:
+        dictionary.update({w: 1})
+
+def banned_word(paragraph, banned):
+    paragraph = filter(lambda x: x.isalnum() or x.isspace(), paragraph)
+    paragraph = "".join(paragraph)
+
+    dictionary = {}
+    lst = paragraph.split()
+
+    for w in lst:
+        if w != banned:
+            count(w, dictionary)
+
+    print(max(dictionary, key=dictionary.get))
+
+if __name__ == "__main__":
+    paragraph = "Joe hit a ball, the hit ball flew far after it was hit."
+    banned = "hit"
+    banned_word(paragraph, banned)
+
+    paragraph = "Perl and Raku belong to the same family. Perl is the most popular language in the weekly challenge."
+    banned = "the"
+    banned_word(paragraph, banned)