.data
text:   .asciiz "Podaj string: \n"
buf:    .space 100

    .text
    .globl main

main:
    la $a0, text
    li $v0, 4
    syscall

    la $a0, buf
    li $a1, 100
    li $v0, 8
    syscall

    la $t0, buf
    li $t1, 0
    li $t5, '\n'
loop_begin:
    lb $t2, ($t0)
    beqz $t2, end

    addi $t0, $t0, 1
    lb $t3, ($t0)
    beqz $t3, loop_end
    beq $t3, $t5, loop_end

    bgt $t2, $t3, swap
    b loop_begin

swap:
    add $t4, $t2, 0
    add $t2, $t3, 0
    add $t3, $t4, 0

    sb $t3, ($t0)
    subi $t0, $t0, 1
    sb $t2, ($t0)
    addi $t0, $t0, 1

    li $t1, 1

    b loop_begin

loop_end:
    beqz    $t1, end
    li $t1, 0
    la $t0, buf
    b loop_begin

end:
    la $a0, buf
    li $v0, 4
    syscall

    li $v0, 10
    syscall