Cho một chuỗi, đếm số từ trong đó. Các từ được phân tách bằng các ký tự sau. dấu cách [‘ ‘] hoặc dòng mới [‘\n’] hoặc tab [‘\t’] hoặc kết hợp những thứ này
Đề nghị thực hành
Đếm số từ
Thử nó
Phương pháp 1. Ý tưởng là để duy trì hai trạng thái. Trong và ngoài. Trạng thái OUT chỉ ra rằng một dấu phân cách được nhìn thấy. Trạng thái IN chỉ ra rằng một ký tự từ được nhìn thấy. Chúng tôi tăng số lượng từ khi trạng thái trước đó là OUT và ký tự tiếp theo là ký tự Word.
C
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No of words : 50
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No of words : 573
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No of words : 578
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No of words : 580
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No of words : 585
No of words : 586
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No of words : 588
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No of words : 502
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No of words : 591
No of words : 592
C#
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Đầu ra
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Độ phức tạp về thời gian. Trên]
Không gian phụ trợ. Ô[1]
Bài viết này được biên soạn bởi Aarti_Rathi và Narendra Kangralkar. Vui lòng viết bình luận nếu bạn thấy bất cứ điều gì không chính xác hoặc bạn muốn chia sẻ thêm thông tin về chủ đề thảo luận ở trên
Phương pháp 2. sử dụng Chuỗi. phương pháp tách []
- Lấy chuỗi để đếm tổng số từ
- Kiểm tra xem chuỗi rỗng hay null rồi trả về 0
- Sử dụng phương thức split[] của lớp String để tách chuỗi trên các khoảng trắng
- Phương thức split[] ngắt chuỗi đã cho xung quanh các kết quả khớp của biểu thức chính quy đã cho và trả về một mảng chuỗi
- Độ dài của mảng là số từ trong chuỗi đã cho
- Bây giờ, in kết quả
Dưới đây là việc thực hiện các phương pháp trên
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No of words : 50
#include
2No of words : 50
using
75No of words : 50
using
77No of words : 50
using
79No of words : 50
No of words : 5027
from given input string. */
70#include
42using
96
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96
No of words : 58
namespace
15using
96
using
96
No of words : 521
No of words : 571
No of words : 58
No of words : 5039
std;
26
No of words : 55
No of words : 5042
using
96#include
2
using
96
No of words : 50
namespace
29No of words : 50
namespace
31No of words : 50
using
0 namespace
34No of words : 57
#include
2No of words : 57
#include
33No of words : 57
No of words : 580
No of words : 585
using
6 No of words : 5061
No of words : 57
No of words : 56
No of words : 50
namespace
40No of words : 50
#include
50 using
41namespace
43namespace
3No of words : 50
namespace
46No of words : 50
from given input string. */
04namespace
6 No of words : 5076
No of words : 57
#include
2#include
2
Javascript
No of words : 5080
using
52
using
57
using
58
from given input string. */
20
No of words : 5085
No of words : 56
using
62using
63
using
62____1050_______65
using
62
No of words : 55
No of words : 5093
No of words : 57
using
0 std;
0using
62#include
2
using
62
using
62using
75
using
62____1050_______77
using
62using
79
using
62____0_______107
using
62#include
50 using
99_______1050_______84namespace
3
using
62
No of words : 521
No of words : 571
#include
50 No of words : 5117
No of words : 57
No of words : 55
/* C++ program to count no of words
43from given input string. */
70using
95using
96
No of words : 5124
using
96using
99using
84namespace
3
No of words : 57
#include
2No of words : 57
from given input string. */
2 No of words : 56
using
96namespace
08
No of words : 57
#include
2using
62#include
2
using
62____1049_______50 namespace
15
using
62
No of words : 521
No of words : 571
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50 No of words : 5147
No of words : 57
No of words : 55
No of words : 5150
using
96namespace
25
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62#include
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62namespace
29
using
62____1051_______31
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34
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2
using
3
using
62____1051_______40
using
62____1049_______50 using
41namespace
43namespace
3
using
62namespace
46
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62
No of words : 5174
namespace
6 No of words : 5176
No of words : 583
No of words : 5178
Đầu ra
No of words : 5
Thời gian phức tạp. TRÊN]
Không gian phụ trợ. Ô[1]
Phương pháp 3. sử dụng StringTokenizer. phương thức đếmTokens[]
- Lấy chuỗi để đếm tổng số từ
- Kiểm tra xem chuỗi rỗng hay null rồi trả về 0
- Tạo StringTokenizer với chuỗi đã cho được truyền dưới dạng tham số
- Đếm tổng số từ trong chuỗi đã cho bằng phương thức CountTokens[]
- Bây giờ, in kết quả
Dưới đây là việc thực hiện các phương pháp trên
C++
using
51
using
52
#include
using
namespace
std;
using
57
using
58
No of words : 58
No of words : 5188
No of words : 56
No of words : 57
using
63No of words : 57
using
65No of words : 57
No of words : 55
No of words : 5196
No of words : 50
using
0 std;
0
No of words : 57
No of words : 5201
No of words : 57
No of words : 58
No of words : 5204
No of words : 57
No of words : 5206
No of words : 57
No of words: 56
No of words : 5209
No of words : 5210_______1048_______54
No of words : 50
No of words : 5213
No of words : 57
using
0 namespace
34#include
2
No of words : 58
namespace
37No of words : 56
No of words : 57
namespace
42No of words : 5223
namespace
3
No of words : 57
namespace
46No of words : 57
namespace
48No of words : 5229
No of words : 5230
#include
2
Java
namespace
56
using
52
namespace
58
No of words : 5235
No of words : 581
namespace
61No of words : 56
No of words : 57
No of words : 57
using
57No of words : 57
using
58No of words : 57
No of words : 580
No of words : 585
No of words : 58
using
96
No of words: 504
No of words : 57
No of words : 56
No of words : 50
No of words : 50
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63No of words : 50
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65No of words : 50
No of words : 55
No of words : 5259
namespace
84 namespace
85/* C++ program to count no of words
3using
0
No of words : 589
namespace
3No of words : 50
No of words : 50
No of words : 5268
No of words : 50
No of words : 5270
No of words : 50
No of words : 5272
No of words : 5273
std;
26____0_______275
No of words : 50
No of words : 50
No of words : 5278
No of words : 50
No of words : 5280
No of words : 50
No of words : 5282
No of words : 50
using
0 No of words : 5285
No of words : 57
#include
2No of words : 57
No of words : 57
#include
33No of words : 57
No of words : 580
No of words : 585
using
6 No of words: 584
No of words : 57
No of words : 56
No of words : 50
No of words : 50
namespace
40No of words : 50
No of words: 588
std;
26____1051_______43namespace
3
No of words : 50
No of words : 50
namespace
46No of words : 50
No of words: 592
No of words : 5229
No of words : 574
std;
26std;
37
No of words : 57
#include
2#include
2
std;
41
Python3
No of words : 508
No of words : 5320
No of words : 57
No of words : 5322
No of words : 57
No of words : 55
No of words : 5325
No of words : 5326
No of words : 50
using
0 No of words : 589
No of words : 57
No of words : 5331
No of words : 502
No of words : 589
No of words : 57
No of words : 5335
No of words : 502
No of words : 5337
No of words : 5338
/* C++ program to count no of words
2No of words : 57
No of words : 521
No of words : 5342
No of words : 523
No of words : 5344
using
96
No of words : 50
No of words : 5347
No of words : 50
No of words : 55
No of words : 5350
/* C++ program to count no of words
3
No of words : 5331
No of words : 574
No of words : 502
No of words : 596
No of words : 57
using
0 No of words : 5331
std;
76
No of words : 502
No of words : 5223
No of words : 586
No of words : 571
No of words : 5364
No of words : 5365
No of words : 5366
C#
std;
87
using
52
using
No of words : 596
No of words : 581
namespace
61No of words : 56
using
62____1050_______57
using
62____1050_______58
using
62
No of words : 580
No of words : 585
No of words : 58
No of words : 57
No of words: 504
using
62
No of words : 56
No of words : 57
using
63No of words : 57
using
65No of words : 57
No of words : 55
No of words : 571_______0_______83
No of words : 5394
using
96____1050_______0 std;
0
No of words : 57
No of words : 5399
No of words : 57
No of words : 5270
No of words : 57
No of words : 583
No of words : 5404
No of words : 57
#include
42
No of words : 57
No of words : 5278
No of words : 57
No of words : 5280
No of words : 57
No of words : 5412
No of words : 57
using
0 No of words : 5415
using
62#include
2
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62____1049_______33
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62
No of words : 580
No of words : 585
using
6 /* C++ program to count no of words
96using
62
No of words : 56
No of words : 57
namespace
40No of words : 57
No of words : 583
using
41using
96____1051_______2namespace
3
No of words : 57
namespace
46No of words : 57
No of words : 5438
No of words : 5229
No of words : 574
No of words : 5441
std;
37using
62#include
2
#include
2
______________446
Javascript
______________447
using
52
using
57
using
58
from given input string. */
20
No of words : 5452
No of words : 56
using
62using
63
using
62____1050_______65
using
62
No of words : 55
No of words : 5460
using
0 std;
0using
62
No of words : 5464
No of words : 5338
#include
42using
62____1050_______0
No of words : 5469
#include
2
No of words : 5471
No of words : 5223
namespace
3
namespace
46
______________475
namespace
55
Đầu ra
No of words: 5
Thời gian phức tạp. TRÊN]
Không gian phụ trợ. Ô[1]
Phương pháp 4. sử dụng nhân vật. phương thức isLetter[]
- Lấy chuỗi để đếm tổng số từ
- Kiểm tra xem chuỗi rỗng hay null rồi trả về 0
- Chuyển đổi chuỗi đã cho thành một mảng ký tự
- Kiểm tra xem ký tự có phải là chữ cái không và chỉ mục của mảng ký tự không bằng cuối dòng có nghĩa là ký tự và đặt isWord bằng true
- Kiểm tra nếu ký tự không phải là chữ cái nghĩa là có khoảng trắng thì ta tăng wordCount lên một và đặt isWord bằng false
- Kiểm tra từ cuối cùng của câu và tăng WordCount lên một
- Bây giờ, in kết quả
Dưới đây là việc thực hiện các phương pháp trên
C++
using
51
using
52
#include
using
namespace
std;
______________483
______________484
using
58
No of words : 58
from given input string. */
21No of words : 54
No of words : 5489
No of words : 58
No of words : 5491
No of words : 56
No of words : 57
using
63No of words : 57
using
65No of words : 57
No of words : 55
No of words : 5499
No of words : 50
using
0 std;
0No of words : 57
#include
2No of words : 57
No of words : 58
No of words : 5507
No of words : 57
No of words : 5509
No of words : 5510
No of words : 5511
namespace
3No of words : 57
No of words : 58
No of words : 5515
No of words : 57
No of words : 521
No of words : 571
No of words : 58
No of words : 5520
No of words : 50
No of words : 5522
No of words : 50
No of words : 5524
No of words : 50
No of words : 5526
No of words : 50
No of words : 5528
No of words : 50
No of words : 55
No of words : 571
No of words : 5532_______0_______533
/* C++ program to count no of words
3
No of words : 5510_______0_______536
namespace
3No of words : 50
#include
2
No of words : 50
No of words : 5541
No of words : 50
No of words : 5543
No of words : 50
No of words : 5545
No of words : 50
No of words : 5547
No of words : 50
from given input string. */
2 No of words : 55
No of words : 5551
No of words : 5532
No of words : 5553
No of words : 50
No of words : 56
/* C++ program to count no of words
3
No of words : 5557
/* C++ program to count no of words
3
No of words : 5510
No of words : 5511
namespace
3No of words : 50
#include
2
No of words : 50
No of words : 5565
No of words : 50
No of words : 5567
No of words : 50
/* C++ program to count no of words
31No of words : 50
from given input string. */
2 No of words : 55
No of words : 571_______0_______532
No of words : 5575
/* C++ program to count no of words
3
No of words : 5557
No of words : 50
#include
2No of words : 57
#include
2
No of words : 57
No of words : 5583
No of words : 57
No of words : 5585
No of words : 57
using
0 No of words : 5588
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2
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No of words : 58
namespace
37No of words : 56
No of words : 57
No of words : 54
namespace
1namespace
2namespace
3No of words : 57
No of words : 58
No of words : 5601_______0_______602
No of words : 5603
No of words : 5602
No of words : 571
No of words : 54
No of words : 5607
No of words : 57
namespace
48namespace
6 No of words : 5611
No of words : 57
using
0 std;
0#include
2
No of words : 5616
Java
namespace
56
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52
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59
No of words : 581
namespace
61No of words : 56
No of words : 57
No of words : 57
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57No of words : 57
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58No of words : 57
No of words : 580
No of words : 585
No of words : 58
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96
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No of words : 57
No of words : 56
No of words : 50
No of words : 50
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63No of words : 50
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65No of words : 50
No of words : 55_______0_______259
namespace
84 namespace
85/* C++ program to count no of words
3using
0
No of words : 589
namespace
3No of words : 50
No of words : 50
No of words : 58
No of words : 5654
No of words : 589
namespace
3No of words : 50
No of words : 50
No of words : 5659
No of words : 5510
No of words : 5511
namespace
3No of words : 50
No of words : 58
No of words : 5665
No of words : 596
namespace
3No of words : 50
No of words : 50
No of words : 5670
No of words : 50
No of words : 5672
No of words : 50
No of words : 54
No of words : 5675
No of words : 50
No of words : 50
No of words : 521
No of words : 571_______0_______8
No of words: 518
No of words : 589
No of words : 5683
/* C++ program to count no of words
3
/* C++ program to count no of words
3____0_______522
/* C++ program to count no of words
3____0_______524
/* C++ program to count no of words
3____0_______526
/* C++ program to count no of words
3
No of words : 5528
/* C++ program to count no of words
3
No of words : 55
No of words : 5695
No of words: 543
No of words : 5697
No of words : 5698
No of words: 543
No of words : 5510
No of words : 5536
namespace
3/* C++ program to count no of words
3
/* C++ program to count no of words
3____0_______541
/* C++ program to count no of words
3
No of words : 5543
/* C++ program to count no of words
3
No of words : 5545
/* C++ program to count no of words
3____0_______547
/* C++ program to count no of words
3from given input string. */
2
No of words : 55
No of words : 5715
No of words : 5716______0_______717
No of words : 5698
No of words: 543____0_______557
No of words: 543
No of words : 5510
No of words : 5511
namespace
3/* C++ program to count no of words
3#include
2
/* C++ program to count no of words
3
/* C++ program to count no of words
3
No of words : 5565
/* C++ program to count no of words
3
No of words : 5567
/* C++ program to count no of words
3/* C++ program to count no of words
31
/* C++ program to count no of words
3____1048_______2
No of words : 55
No of words : 5695
No of words : 5716____0_______739
No of words: 543____0_______557
No of words : 50
#include
2No of words : 50
No of words : 50
No of words : 5583
No of words : 50
No of words : 5585
No of words : 50
using
0 No of words : 5588
No of words : 50
No of words : 57
#include
2No of words : 57
No of words : 57
#include
33No of words : 57
No of words : 580
No of words : 585
using
6 No of words: 584
No of words : 57
No of words : 56
No of words : 50
No of words : 50
namespace
40No of words : 50
No of words: 588
std;
26____1051_______43namespace
3
No of words : 50
No of words : 50
namespace
46No of words : 50
No of words: 592
namespace
6 No of words : 574
std;
26std;
37
No of words : 57
#include
2#include
2
std;
41
Python3
std;
42
std;
43
No of words : 5788
No of words : 5789
No of words : 508
from given input string. */
21No of words : 5792
No of words : 549
No of words : 57
No of words : 57
std;
47No of words : 57
std;
49No of words : 57
No of words : 55
No of words : 571
No of words : 5792
No of words : 502
No of words : 502
No of words : 5805
No of words : 538
No of words : 526
No of words : 571
No of words : 5792
/* C++ program to count no of words
2No of words : 502
No of words : 502
No of words : 589
No of words : 549
No of words : 50
using
0 No of words : 589
No of words : 57
No of words : 57
No of words : 5820
No of words : 502
No of words : 589
No of words : 57
No of words : 5824
No of words : 502
No of words : 5826
No of words : 57
No of words : 5828_______0_______02
No of words : 526
No of words : 571
No of words : 5792
/* C++ program to count no of words
2No of words : 5834
No of words : 596