without multipltion and division

Write a MIPS assembly program that reads the size (n) of the message from the user. Then, the program allocates (n+1) bytes in the heap. After that, read a string of n characters from the user he/she wishes to encrypt. Next, read an encrypting key (e) from the user [1, 25]. Encrypt the original string with the encryption key using the following code. Finally, print out the encrypted string. \begin{tabular}{l} \multicolumn{2}{|c|}{ Sample Run } \\ \begin{tabular}{|l|} Enter n: 11 \\ Enter string: Hello World \\ Enter e: 13 \\ Encrypted string = Uryyb Jbeyq \\ \hline \end{tabular} \end{tabular} for (i=0;i05A) ch =ch26; \} else if ( islower (ch)){ ch =ch+e; if (ch>07A) ch = ch 26; \} str [i]= ch; \}