1 class Solution {
2 public boolean isNStraightHand(int[] hand, int W) {
3 if(W == 1) return true;
4 Arrays.sort(hand);
5 int i = 0, j = 0;
6 while(i < hand.length){ //可以到最后 因为 == -1的话就会i++
7 j= 1;
8 int count = 0;
9 if(hand[i] == -1){
10 i++;
11 }else{
12 int prev = hand[i]; //prev写在 = -1 前面
13 hand[i] = -1;
14 count++;
15 while(i+j < hand.length && count < W){
16 if(hand[i + j] == prev + 1){
17 prev = hand[i + j];
18 hand[i + j] = -1;
19 count++;
20 j++;
21 }else if(hand[i + j] == prev || hand[i + j] == -1){
22 j++;
23 }else{
24 return false;
25 }
26 }
27 if(count < W) return false; //注意要是count<W 就要return false
28 i++;
29 }
30 }
31 return true;
32
33 }
34 }
