由于数组排序，你可以通过它们与2指针（每个阵列）。如果 | A [1 + 1] - B [J]。| ＆LT; | A [1] - B [J + 1] | 然后增加我，否则增加Ĵ。继续，直到你已经达到了其中一个数组的结束。保持最低限度指标的跟踪，当您去。

Since the arrays are sorted, you can pass through them with 2 pointers (one for each array). If |A[i+1] - B[j]| < |A[i] - B[j+1]| then increment i, otherwise increment j. Continue until you've reached the end of one of the arrays. Keep track of the minimal indexes as you go.