有个TXT文件，数据行数1000万左右，里面第二列有重复的，怎么样用代码快速找出来删掉，并把删掉的行记录下来。我用两个循环读出来逐行比较，程序直接死掉，TXT内容如下。请大侠们帮忙，谢谢！
www.colkk.com/qo?=00000104046056504342，00000038348460690694，00000032207730073384，00000056102832732818
www.colkk.com/qo?=00000016152537962392，00000071343732838345，00000031202869148615，00000093438909019163
www.colkk.com/qo?=00000021437280373083，00000091941273535478，00000077771077331309，00000041103144690347
www.colkk.com/qo?=00000075567264841681，00000052214304080263，00000003088238807968，00000007841904284267
www.colkk.com/qo?=00000010659202048540，00000067311034859210，00000045877741520182，00000044580318971656
www.colkk.com/qo?=00000015743616702688，00000050627851855767，00000017497487642976，00000061800123092055
www.colkk.com/qo?=00000059416589874475，00000098308073066879，00000084648360640178，00000074847699146248
www.colkk.com/qo?=00000034362985397400，00000093266532698963，00000066729878847121，00000066447904780048
www.colkk.com/qo?=00000042043198079303，00000102547553355418，00000078863539317161，00000025487073460156
www.colkk.com/qo?=00000023195284909706，00000067311034859210，00000009275457958355，00000054892188460954
www.colkk.com/qo?=00000038080197843687，00000082659571424270，00000035618712109824，00000016305389658500
www.colkk.com/qo?=00000099697178946829，00000031384061725960，00000058046364173028，00000056436233335074
www.colkk.com/qo?=00000062656654081631，00000067348089845506，00000098450350262442，00000036590220138109
www.colkk.com/qo?=00000032503562437021，00000047281102669180，00000087374324096763，00000032292151661194
加好友 
发短信
Post By：2016/9/28 8:59:00 [显示全部帖子]
