added decrypt function

strings/decrypt.py

@@ -0,0 +1,27 @@
+def decrypt(txt, symbol):
+  #here we split the string we need to decypher into a list
+  txt_lst = txt.split()
+  res_str = ""
+  #we create a for loop which loops through the newly created list
+  for word1 in txt_lst:
+    #here we convert the current word we got through the loop into a list of charachters
+    word1_lst = list(word1)
+    #we loop through each charachter in the newly created list of charachters form the word we are looping throuh
+    for char1 in word1_lst:
+      #we set a condition, where if the symbol the loop is currently on corresponds to the symbol we need to remove, we stop on it and examine it
+      if char1 == symbol:
+        #we find the charachters index from the word
+        indx = word1.index(char1)
+        #we remove the list (the list which contains every element and characahter from the word we are looping throuh) element with the same index from the list.
+        word1_lst[indx] = ""
+    res_wrd = ""
+    #we loop throuh the list containing all the charachters from the word, and append those charachters to a new string
+    for char1 in word1_lst:
+      res_wrd += char1
+    #here we add the newly created, decyphered word to a new string which will contain our full result
+    res_str += res_wrd + " "
+  res_str = res_str[:-1]
+  #and here we print out the final result
+  print(res_str)
+
+decrypt("o$ne t$wo three$", "$")