[問題] 檢查ArrayList是否重複
我有一個簡單的
ArrayList<Integer> a,b及c
a = {1,2,3,4,5}
b = {2,3,4,5,1}
c = {1,2,3,4,5,6}
我想得到a=b , c不等於a與b
a與b從排列順序不同但是內容物是相同的
b多出一個6
有沒有什麼一個寫好的方法是能快速的判斷是否相同呢?
謝謝
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 59.120.251.134
※ 文章網址: https://www.ptt.cc/bbs/java/M.1462772258.A.B81.html
推
05/09 13:51, , 1F
05/09 13:51, 1F
→
05/09 14:00, , 2F
05/09 14:00, 2F
→
05/09 14:00, , 3F
05/09 14:00, 3F
推
05/09 16:14, , 4F
05/09 16:14, 4F
→
05/09 18:56, , 5F
05/09 18:56, 5F
→
05/09 18:56, , 6F
05/09 18:56, 6F
→
05/09 18:56, , 7F
05/09 18:56, 7F
→
05/09 18:58, , 8F
05/09 18:58, 8F
→
05/09 18:58, , 9F
05/09 18:58, 9F
→
05/09 18:59, , 10F
05/09 18:59, 10F
→
05/09 19:00, , 11F
05/09 19:00, 11F
推
05/09 20:40, , 12F
05/09 20:40, 12F
→
05/09 20:44, , 13F
05/09 20:44, 13F
→
05/09 20:44, , 14F
05/09 20:44, 14F
→
05/09 20:44, , 15F
05/09 20:44, 15F
→
05/09 22:05, , 16F
05/09 22:05, 16F
→
05/09 22:57, , 17F
05/09 22:57, 17F
→
05/09 23:56, , 18F
05/09 23:56, 18F
→
05/09 23:57, , 19F
05/09 23:57, 19F
→
05/10 00:19, , 20F
05/10 00:19, 20F
推
05/10 00:27, , 21F
05/10 00:27, 21F
→
05/10 00:28, , 22F
05/10 00:28, 22F
→
05/10 12:12, , 23F
05/10 12:12, 23F
→
05/10 13:33, , 24F
05/10 13:33, 24F
→
05/10 13:34, , 25F
05/10 13:34, 25F
→
05/10 14:24, , 26F
05/10 14:24, 26F
推
05/10 17:32, , 27F
05/10 17:32, 27F
推
05/17 15:04, , 28F
05/17 15:04, 28F
→
05/17 15:05, , 29F
05/17 15:05, 29F
討論串 (同標題文章)
完整討論串 (本文為第 1 之 2 篇)：