第三题贪心 ``` class Man implements Comparable<Man> { int a; int b; int id; int c; public Man(int a, int b, int id, int c) { this.a = a; this.b = b; this.id = id; this.c = c; } @Override public int compareTo(Man o) { if (o.c == this.c) return o.a - this.a; return o.c - this.c; } } /** * 根据顾客属性计算出顾客排队顺序 * * @param a int整型一维数组 顾客a属性 * @param b int整型一维数组 顾客b属性 * @return int整型一维数组 */ public int[] WaitInLine(int[] a, int[] b) { int len = a.length; List<Man> l = new ArrayList<>(); for (int i = 0; i < len; i++) l.add(new Man(a[i], b[i], i + 1, a[i] - b[i])); Collections.sort(l); int[] res = new int[len]; for (int i = 0; i < len; i++) res[i] = l.get(i).id; return res; } ```