1- The traditional way in which we swap two values is to use a temporary variable as follows:

int temp = a;

a = b;

b = temp;

(a) Translate this code to MIPS, assuming a is in $s0 and b is in $s1.

(b) We can actually swap two values without using a temporary variable. Determine this method (it involves the same number of statements, but uses some arithmetic/logical expressions) and translate this into MIPS.

(c) What is an advantage of this latter method?

2- Translate the following code into MIPS assembly language

sum = 0;

for(i=1; i<=j; i++)

sum += i;

Assume sum, i, and j are in registers $s0, $s1 and $s2, respectively. Determine the total number of instructions executed, in terms of the value of j.