Using two pointers on sorted array [1,3,5,7,9], find if a pair sums to 10. What pairs are found?

Question

Accepted Answer

(C) (1,9) and (3,7). Explanation: Left=0(1), Right=4(9): 1+9=10 ✓. Left=1(3), Right=3(7): 3+7=10 ✓. Both pairs sum to 10.