The Sensex and Nifty ended marginally higher, rebounding from losses earlier in the session as European shares showed a muted reaction to the UK elections that resulted in a hung parliament, but indexes still posted their first weekly fall in five.The broader NSE index ended 21 points or 0.22 per cent higher at 9,668.25, falling nearly 0.15 per cent for the week. The benchmark BSE index closed up 48.7 points or 0.16 per cent at 31,262.06, ending flat for the week.