I am interested in websites similar to rosettacode.org or golf.shinh.org where solutions to simple tasks are posted in a variety of all-purpose languages.

Can you recommend any such websites that have not been posted to HN previously.

Here is a novice sample, using some languages I prefer:

task:

print urls from 0, incremented by 20; stop at 100

output:

    http://example.com/?p=0
    http://example.com/?p=20
    ...
    http://example.com/?p=100

   n=0;while true;do test $n -le 100||break;
   echo http://example.com/?p=$n;n=$((n+20));done

   a:"http://example.com/?p=";`0:?{,/$(:[0=x!20;a,x;a,0])}'!120

   ; x = 0
   ;a output = "http://example.com/?p=" x
   ; x = x + 20 
   ; le(x,100) :f(end)s(a)
   ;end

   format ELF
   section '.text' executable
   public main       
   extrn printf
   extrn _exit
   main: 
   mov ebx,0
   x:
   push ebx
   push msg
   call printf 
   add ebx,20
   cmp ebx,100
   jnbe y
   jmp x
   y:
   push 0
   call _exit
   section '.data' writeable
   msg db "http://example.com/?p=%d", 0xA,0