The U.S. dollar recovered on Friday from the previous session's sharp losses.Oil lost ground after soaring nearly 5 percent on Thursday. It last traded below $120 per barrel. Further boosting the market's dollar optimism, analysts said, was the rise in Wall Street futures after comments from influential investor Warren Buffett saying he has no bets against the greenback and that U.S. stocks are more attractive now than a year earlier. Losses in sterling also helped the dollar regain its footing, falling sharply after the UK economy posted its weakest performance since the recession of the early 1990s. The poor UK growth numbers added to an overall bleak picture of a slowing European economy after recent data showing contraction in euro zone GDP, increasing the possibility of European Central Bank and Bank of England monetary easing.