fn getNum(str1: []const u8) []u64 {
    var pos: u64 = 0;
    var num = std.mem.zeroes([64]u64);
    var num_res = std.mem.zeroes([16]u64);
    var it: u64 = 0;
    for (str1, 0..) |elem, it2| {
        if (elem >= 48 and elem <= 57) { //is ascii number?
            num[pos] = @intCast(elem - 48);
            if (pos <= @bitSizeOf(@TypeOf(pos))) {
                pos += 1;
            } else {
                print("ERROR int u64 oveflow! pos {d} ,max {d}\n", .{ pos, @bitSizeOf(@TypeOf(pos)) });
            }
        }
        //Calculate int out of characters
        if ((elem < 48 or elem > 57) or it2 == (str1.len - 1)) {
            if (pos != 0) {
                for (0..pos) |i| {
                    if (i < pos - 1) {
                        num_res[it] = num_res[it] + num[i] * (std.math.pow(u64, 10, (pos - i - 1)));
                    } else {
                        num_res[it] = num_res[it] + num[i];
                    }
                }
                //print("numres:{}={}\n", .{ it, num_res[it] });
                pos = 0;
                it += 1;
            }
        }
    }
    return &num_res;
}