Xoa dong trung lap tung buoc: lam sach danh sach ngay trong trinh duyet
Cong cu mien phi Remove Duplicate Lines tren trang nay loai bo cac dong lap lai trong danh sach da dan, giu lai ban sao dau tien cua moi dong va khong dong den phan con lai cua thu tu. Huong dan nay di qua cac buoc chinh xac va giai thich dieu gi duoc coi la trung lap.
freetoolonline.com Editorial TeamCach xoa cac dong trung lap
- Mo cong cu Remove Duplicate Lines.
- Dan hoac go van ban vao o nhap, giu moi dong mot muc - cong cu coi moi lan xuong dong la ranh gioi giua hai muc.
- Bam Run. Cong cu doc danh sach tu tren xuong duoi, giu lan dau tien no thay moi dong chinh xac va bo qua moi lan lap lai sau do.
- Sao chep danh sach da lam sach tu o ket qua. Sua o nhap va bam Run lai bat cu luc nao - o nay khong duoc luu giua cac lan sua.
Dieu gi duoc coi la trung lap
Cong cu so sanh cac dong nhu van ban chinh xac, khong phai nhu mot y tuong gan giong, nen hai dong phai khop nhau tung ky tu de duoc coi la cung mot muc:
| Dong dau vao | So sanh voi | Duoc coi la trung lap? | Vi sao |
|---|---|---|---|
| apple | apple | Co | Van ban giong nhau |
| Apple | apple | Khong | Viec so sanh phan biet chu hoa/thuong; A hoa khac a thuong |
| apple | apple | Khong | Khoang trang o cuoi lam hai dong thanh hai chuoi khac nhau |
| (dong trong) | (dong trong) | Co | Hai dong trong giong nhau, nen chi dong trong dau tien ton tai |
Vi viec kiem tra phan biet chu hoa/thuong va khoang trang, hay dung bo chuyen doi chu hoa/thuong hoac xoa khoang trang du truoc neu danh sach cua ban lan lon chu hoa/thuong hoac co khoang trang khong deu va ban muon cac bien the do duoc gop lai.
Cach dung pho bien
Lam sach mot danh sach dia chi email da dan truoc khi nhap vao mot cong cu gui thu; rut gon mot danh sach the, hashtag hoac ma san pham xuong tap hop duy nhat; xoa trung lap cac dong sao chep tu mot file log hoac mot cot bang tinh; hoac don gon mot danh sach tu khoa truoc khi dan vao noi khong cho phep lap lai.
Remove Duplicate Lines so voi bang tinh hoac dong lenh
| Cach lam | Buoc de lam sach | Giu nguyen thu tu ban dau? | Chay offline / khong tai len |
|---|---|---|---|
| Remove Duplicate Lines (cong cu nay) | 2 (dan, bam Run) | Co | Co |
| Tinh nang "Xoa gia tri trung lap" cua bang tinh | 4 (dan, chon vung, mo menu, xac nhan) | Co | Khong (bang tinh tren may chu tai du lieu len) |
Dong lenh (sort -u) | 3 (luu file, chay lenh, doc ket qua) | Khong - sort -u cung sap xep theo bang chu cai | Co |
Dong lenh (awk '!seen[$0]++') | 3 (luu file, viet lenh, doc ket qua) | Co | Co |
Cach dung bang tinh hoat dong tot khi danh sach da nam trong mot bang tinh, nhung nghia la phai tai du lieu len mot dich vu tren may chu, tru khi ban dung mot ung dung tren may. Cach dung dong lenh nhanh cho ai da quen voi terminal, nhung sort -u sap xep lai danh sach theo bang chu cai nhu mot tac dung phu, dieu khong phai luc nao cung la dieu ban muon. Remove Duplicate Lines tranh ca hai nhuoc diem: dan, bam mot lan, va thu tu ban dan vao chinh la thu tu ban nhan lai, tru cac lan lap.
Quyen rieng tu
Viec xoa trung lap chay hoan toan trong tab trinh duyet cua ban bang JavaScript thuan. Khong co gi ban go hoac dan duoc tai len, gui den dich vu phan tich hay ghi vao bat ky may chu nao - tai lai hoac roi trang se xoa o nhap, khong co lich su va khong co tai khoan.
Huong dan lien quan
- Sap xep dong van ban tung buoc - mot cong cu van ban khac chay chi trong trinh duyet, de sap xep thay vi xoa trung lap.
- Dem tu tung buoc - de dem tu va ky tu thay vi xoa lan lap.
- Cong cu Remove Duplicate Lines - chinh cong cu do.
- Trung tam cong cu cho lap trinh vien - toan bo bo cong cu, moi cong cu deu chay trong trinh duyet ma khong tai len.
Cau hoi thuong gap
Cong cu giu lai ban sao nao cua mot dong bi lap lai?
Ban sao dau tien. Cong cu doc danh sach cua ban tu tren xuong duoi va giu lai lan xuat hien som nhat cua moi dong chinh xac, bo qua moi lan lap lai sau do.
Tai sao "Apple" va "apple" khong duoc gop thanh mot dong?
Viec so sanh phan biet chu hoa/thuong, nen viet hoa khac nhau duoc tinh la mot dong khac. Chuyen danh sach ve mot kieu chu truoc (hoa hoac thuong) neu ban muon cac bien the do duoc coi la trung lap.
Cong cu co doi thu tu cua cac dong duoc giu lai khong?
Khong. Chi cac dong lap lai bi xoa; cac dong con lai giu nguyen thu tu tuong doi ma chung co trong danh sach ban dau cua ban.
Van ban cua toi co duoc tai len hoac luu o dau khong?
Khong. Viec xoa trung lap chay hoan toan trong trinh duyet cua ban; khong co gi ban go hoac dan duoc gui den may chu, va khong co gi duoc luu sau khi ban tai lai hoac roi trang.
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