Created swapcase.py

strings/swapcase.py

@@ -0,0 +1,53 @@
+"""
+Example to show how this method works
+
+>>> swap_case ("Hello")
+hELLO
+
+>>> swap_case ("water")
+WATER
+"""
+
+
+def swap_case(input_string: str) -> str:
+    """This method will swap the cases of a given string
+    eg: input: input_string= "Hello" output: swapped_string="hELLO" """
+    list_representation = list(input_string)
+    for i in range(len(list_representation)):
+        if list_representation[i] >= "A" and list_representation[i] <= "Z":
+            m2 = ord(list_representation[i])
+            m1 = m2 + 32
+            list_representation[i] = chr(m1)
+        elif list_representation[i] >= "a" and list_representation[i] <= "z":
+            m3 = ord(list_representation[i])
+            m4 = m3 - 32
+            list_representation[i] = chr(m4)
+        else:
+            pass
+    swapped_list = "".join(list_representation)
+    return swapped_list
+
+def swap_case(input_string) -> None:
+    #This method will swap the cases of a given string
+    # eg: input: s= "Hello" output: t="hELLO"
+    list_representation=list(input_string)
+    for i in range(len(list_representation)):
+        if list_representation[i]>='A' and list_representation[i]<='Z':
+            m2=ord(list_representation[i])
+            m1=m2+32
+            list_representation[i]=chr(m1)
+        elif list_representation[i]>='a' and list_representation[i]<='z':
+            m3=ord(list_representation[i])
+            m4=m3-32
+            list_representation[i]=chr(m4)
+        else:
+            pass
+    swapped_list=[ele for ele in list_representation]
+    swapped_list="".join(swapped_list)
+    return swapped_list
+
+if __name__ == "__main__":
+    # sample test case
+    input_string = "Hello"
+    swapped_string = swap_case(input_string)
+    print(swapped_string)