1)
const len = 6;
const n = 36;
begin
for var i:= 0 to len-1 do
begin
if i mod 2 = 0 then
for var u:= len downto 1 do
Write(i*len+u+' ')
else
for var e:= 1 to len do
Write(i*len+e+' ');
WriteLn();
end;
end.

1)
const n=6;
var a:array[1..n,1..n] of integer;
i,j:integer;
begin
for i:=1 to n do
 if i mod 2=1
  then for j:=1 to n do a[i,j]:=n*i-j+1
  else for j:=1 to n do a[i,j]:=n*(i-1)+j;
for i:=1 to n do
 begin
 for j:=1 to n do write(a[i,j]:3);
 writeln;
 end;
end.

Результат:
  6  5  4  3  2  1
  7  8  9 10 11 12
 18 17 16 15 14 13
 19 20 21 22 23 24
 30 29 28 27 26 25
 31 32 33 34 35 36

2)
const n=6;
var a:array[1..n,1..n] of integer;
i,j:integer;
begin
for j:=n downto 1 do
 if (n+j) mod 2=0
 then for i:=1 to n do a[i,j]:=n*(n-j)+i
 else for i:=1 to n do a[i,j]:=n*(n-j+1)-i+1;
for i:=1 to n do
 begin
 for j:=1 to n do write(a[i,j]:3);
 writeln;
 end;
end.

Результат:
 36 25 24 13 12  1
 35 26 23 14 11  2
 34 27 22 15 10  3
 33 28 21 16  9  4
 32 29 20 17  8  5
 31 30 19 18  7  6