find element in array

# finding element in an array
.data
array:  .word 3, 5, 7, 9, 11, 13, 15
n:      .word 7 # length of array
key:    .word 13

.text
start:
    la x5, array
    lw x6, n # array length
    lw x7, key
    li x8, 0
search:
    beq x8, x6, not_found
    lw x9, 0(x5)
    beq x7, x9, found
    addi x5, x5, 4 # jump to next element
    addi x8, x8, 1 # add 1 to counter
    j search
not_found:
    li x1, 0 # update result = 0
    j end
found:
    li x1, 1 # update result = 1
    j end
end:
    nop