一个数据比较的小实验。不知道还能写几个小技巧。mark一下。iimport java.util.Arrays;import java.util.Comparator;import java.util.List;import java.util.Optional;public class CmpMain {/*** Default constructor*/public CmpMain() {}public static void main(String[] args) {ListInteger allRows Arrays.asList(1, 3, 5, 7, 9, 11);int refNum 6;OptionalInteger minDifRowOpt allRows.stream().min((r1, r2) - Long.compare(getAbsDif(r1, refNum), getAbsDif(r2, refNum)));OptionalInteger minDifRowOpt2 allRows.stream().min(Comparator.comparing(r-getAbsDif(r, refNum)));System.out.println(minDifRowOpt.get());System.out.println(minDifRowOpt2.get());}public static int getAbsDif(int r, int subNum) {return Math.abs(r - subNum);}}
