assembly - MIPS program in 3 arrays one with the number another to rearrange them in ascending order and another to arrange them in descending order -

i have been practicing mips programming skills, taking class computer architecture , ran problem. these instructions: write mips program that:

1. initializes integer array
2. sorts elements in ascending order in second array , prints them.
3. sorts elements in descending order in third array , prints them....

this have far don't know how populate array 3 descending order numbers

   .data array: .space 100 input: .asciiz "enter @ least 4 integers: enter number 999 exit \n" output: .asciiz "the array in ascending order: \n" commas: .asciiz ","  .text .globl main main:  la $a1, array   #loads pointer array $a1 li $a2,9        #loads 9 $a2 li $t0,0     li $t1,999      loops:  la $a0, input   #loads input text $a li $v0, 4       #loads 4 $v0 (prints string)  syscall          li $v0, 5       #loads 5 $v0 (read interger) syscall          beq $v0,$t1,swap addi $t0,$t0,4   #add 4 $t0, save $t0 sw $v0, ($a1)    #stores input array addi $a1, $a1,4  #add 4 $a1, save $a1 j loops  swap:  la $t4, array    #loads array $t4 la $t1, array    #loads array $t1 addi $t1,$t1,4   #add 4 $t1, save $t1  la $t8,array     #loads array $t8 add $t8,$t0,$t8  #add $t8 $t0, save $t8 la $t9,array add $t9,$t0,$t9  #add $t9 $t0, save $t9 addi $t9,$t9,-4  #subtracts 4 $t9, save $t9  loop:  lw $t2,($t4)     #load input $t2 lw $t3,($t1)     #load input $t3 bgt $t2,$t3,loop1 #if $t2 > $t3, go loops #blt $t2,$t3,loop1 #if $t2 < $t3, go loops sw $t3,($t4)     #store $t3 in $t4 sw $t2,($t1)     #store $t2 in $t1  loop1:  addi $t1,$t1,4    #add 4 $t1, save $t1 blt $t1,$t8,loop  #if $t1<$t8, go loop addi $t4,$t4,4    #add 4 $t4, save $t4 move $t1,$t4 addi $t1,$t1,4    #add 4 $t1, save $t1 blt $t4,$t9,loop  #if $t4<$t9, go loop  print:  la $a1,array      #loads array $a1 la $a0, output    #loads output $a0 li $v0, 4         #loads 4 #v0 syscall  loop2:  blez $t0, done   #if $t0<=0, go done li $v0, 1        #loads 1 $v0 lw $a0, 0($a1)   #load inout $a0 syscall la $a0, commas    #loads commas $a0 li $v0, 4        #loads 4 $v0 syscall addi $a1, $a1, 4  #add 4 $a1, save $a1 addi $t0, $t0, -4 #subtracts 4 #t0, save $t0 j loop2  done: j done 

could please me out?

p.s. comments there guideline myself