Java 轨道管理

本页面为 Exercism 社区提供管理 Java 轨道所需的信息和工具。

学员
283,284
提交
4,878,880
指导讨论
17,725

Java 轨道 是健康 ✅

构建中

Java 教学大纲

了解更多

帮助创建轨道教学大纲:它由一系列概念和学习练习组成,用来教授这门编程语言的基础内容。

下一个目标:创建一个至少包含 30 个概念的完整教学大纲。 了解更多。
26 个正在教授的概念
Ba
Basics
61,648 人已学过
Bo
Booleans
35,720 人已学过
Ar
Arrays
18,398 人已学过
Fo
For Loops
18,398 人已学过
Fo
For-Each Loops
18,398 人已学过
Ge
Generic Types
13,310 人已学过
Li
Lists
13,310 人已学过
Ex
Exceptions
6,868 人已学过
Ch
Chars
11,720 人已学过
Cl
Classes
12,549 人已学过
Co
Constructors
9,176 人已学过
In
Interfaces
6,800 人已学过
If
If-Else Statements
18,693 人已学过
Nu
Numbers
18,693 人已学过
St
Strings
23,602 人已学过
Te
Ternary Operators
11,012 人已学过
Sw
Switch Statements
7,958 人已学过
In
Inheritance
7,167 人已学过
En
Enums
4,280 人已学过
Nu
Nullability
7,629 人已学过
Ra
Randomness
4,969 人已学过
Da
Date-Time
5,158 人已学过
Me
Method Overloading
3,567 人已学过
Bi
Bit Manipulation
4,571 人已学过
Se
Sets
3,480 人已学过
Ma
Maps
2,603 人已学过
22 个活跃的学习练习
已开始
尝试次数
完成次数
指导请求
Cook Your Lasagna Cook Your Lasagna
101,820
556,151(平均 5.5)
61,648 (60.5%)
495 (0.5%)
Annalyn's Infiltration Annalyn's Infiltration
48,077
445,194(平均 9.3)
35,720 (74.3%)
314 (0.7%)
Bird Watcher Bird Watcher
22,456
304,233(平均 13.5)
18,398 (81.9%)
480 (2.1%)
Karl's Languages Karl's Languages
14,851
83,936(平均 5.7)
13,310 (89.6%)
113 (0.8%)
Calculator Conundrum Calculator Conundrum
8,441
111,728(平均 13.2)
6,868 (81.4%)
115 (1.4%)
Squeaky Clean Squeaky Clean
17,405
253,609(平均 14.6)
11,720 (67.3%)
495 (2.8%)
Jedlik's Toy Car Jedlik's Toy Car
13,766
118,837(平均 8.6)
12,549 (91.2%)
154 (1.1%)
Need for Speed Need for Speed
10,534
130,554(平均 12.4)
9,176 (87.1%)
77 (0.7%)
Remote Control Competition Remote Control Competition
8,543
90,504(平均 10.6)
6,800 (79.6%)
103 (1.2%)
Cars, Assemble! Cars, Assemble!
20,846
154,077(平均 7.4)
18,693 (89.7%)
416 (2.0%)
Log Levels Log Levels
36,095
319,776(平均 8.9)
23,602 (65.4%)
302 (0.8%)
Salary Calculator Salary Calculator
11,874
69,813(平均 5.9)
11,012 (92.7%)
42 (0.4%)
Football Match Reports Football Match Reports
8,257
34,123(平均 4.1)
7,958 (96.4%)
56 (0.7%)
Wizards and Warriors Wizards and Warriors
7,885
57,947(平均 7.3)
7,167 (90.9%)
39 (0.5%)
Logs, Logs, Logs! Logs, Logs, Logs!
5,011
50,683(平均 10.1)
4,280 (85.4%)
61 (1.2%)
Tim from Marketing Tim from Marketing
8,086
53,207(平均 6.6)
7,629 (94.3%)
66 (0.8%)
Captain's Log Captain's Log
5,294
32,789(平均 6.2)
4,969 (93.9%)
21 (0.4%)
Booking Up For Beauty Booking Up For Beauty
6,232
82,766(平均 13.3)
5,158 (82.8%)
52 (0.8%)
Wizards and Warriors 2 Wizards and Warriors 2
3,930
34,236(平均 8.7)
3,567 (90.8%)
20 (0.5%)
Secrets Secrets
5,257
28,457(平均 5.4)
4,571 (87.0%)
7 (0.1%)
Gotta Snatch 'Em All Gotta Snatch 'Em All
4,045
48,365(平均 12.0)
3,480 (86.0%)
57 (1.4%)
International Calling Connoisseur International Calling Connoisseur
3,035
32,788(平均 10.8)
2,603 (85.8%)
28 (0.9%)
1 个已弃用的学习练习
已开始
尝试次数
完成次数
指导请求
Play Your Cards! Play Your Cards!
8,676
85,964(平均 9.9)
6,859 (79.1%)
121 (1.4%)

练习题

了解更多

练习题的目的是让学员去解决一个任意的问题,并借此运用他们到目前为止学到的概念。

已同步的主代码仓库: 9b54e9a017b84d2f62a9bbbe4f9f47dd55c2ab2d (更新应该是即时的)

下一个目标:实现 139 个练习。 了解详情。
136 个活跃的练习
已开始
尝试次数
完成次数
指导请求
Hello World Hello World
222,549
450,769(平均 2.0)
136,599 (61.4%)
40 (0.0%)
Leap Leap
8,532
32,334(平均 3.8)
6,910 (81.0%)
118 (1.4%)
Reverse String Reverse String
16,186
48,823(平均 3.0)
13,530 (83.6%)
331 (2.0%)
Two Fer Two Fer
24,355
78,172(平均 3.2)
19,423 (79.7%)
3,928 (16.1%)
Armstrong Numbers Armstrong Numbers
7,671
27,177(平均 3.5)
6,153 (80.2%)
149 (1.9%)
Darts Darts
7,641
26,662(平均 3.5)
6,047 (79.1%)
67 (0.9%)
D&D Character D&D Character
5,161
43,020(平均 8.3)
3,653 (70.8%)
77 (1.5%)
DOT DSL DOT DSL
1,701
7,849(平均 4.6)
1,058 (62.2%)
8 (0.5%)
Grains Grains
5,137
40,370(平均 7.9)
4,172 (81.2%)
55 (1.1%)
High Scores High Scores
2,907
23,101(平均 7.9)
2,327 (80.0%)
38 (1.3%)
Resistor Color Resistor Color
6,867
25,984(平均 3.8)
5,562 (81.0%)
74 (1.1%)
Resistor Color Duo Resistor Color Duo
4,881
16,180(平均 3.3)
4,145 (84.9%)
47 (1.0%)
Resistor Color Trio Resistor Color Trio
1,869
21,004(平均 11.2)
1,590 (85.1%)
40 (2.1%)
RNA Transcription RNA Transcription
6,938
18,411(平均 2.7)
5,876 (84.7%)
243 (3.5%)
Acronym Acronym
4,886
21,518(平均 4.4)
3,927 (80.4%)
99 (2.0%)
Difference of Squares Difference of Squares
7,191
24,376(平均 3.4)
6,306 (87.7%)
711 (9.9%)
Gigasecond Gigasecond
8,776
20,974(平均 2.4)
6,337 (72.2%)
1,345 (15.3%)
Hamming Hamming
8,794
33,189(平均 3.8)
7,259 (82.5%)
1,495 (17.0%)
Micro Blog Micro Blog
6,984
39,187(平均 5.6)
4,313 (61.8%)
104 (1.5%)
Pangram Pangram
5,738
15,623(平均 2.7)
4,792 (83.5%)
173 (3.0%)
Perfect Numbers Perfect Numbers
3,765
14,491(平均 3.8)
2,676 (71.1%)
54 (1.4%)
Eliud's Eggs Eliud's Eggs
1,397
4,495(平均 3.2)
1,254 (89.8%)
17 (1.2%)
Protein Translation Protein Translation
3,873
20,124(平均 5.2)
3,057 (78.9%)
62 (1.6%)
Raindrops Raindrops
8,487
22,481(平均 2.6)
7,176 (84.6%)
258 (3.0%)
Say Say
2,917
19,647(平均 6.7)
1,343 (46.0%)
41 (1.4%)
Scrabble Score Scrabble Score
6,445
23,483(平均 3.6)
5,448 (84.5%)
1,085 (16.8%)
Secret Handshake Secret Handshake
4,374
21,904(平均 5.0)
3,368 (77.0%)
467 (10.7%)
Space Age Space Age
4,737
10,992(平均 2.3)
3,663 (77.3%)
65 (1.4%)
Collatz Conjecture Collatz Conjecture
2,395
9,513(平均 4.0)
1,978 (82.6%)
38 (1.6%)
Diamond Diamond
3,017
16,143(平均 5.4)
1,993 (66.1%)
57 (1.9%)
Error Handling Error Handling
2,105
15,042(平均 7.1)
1,225 (58.2%)
7 (0.3%)
ISBN Verifier ISBN Verifier
2,913
14,385(平均 4.9)
2,295 (78.8%)
44 (1.5%)
Isogram Isogram
5,343
20,477(平均 3.8)
4,333 (81.1%)
172 (3.2%)
Killer Sudoku Helper Killer Sudoku Helper
913
4,761(平均 5.2)
501 (54.9%)
18 (2.0%)
Kindergarten Garden Kindergarten Garden
1,448
5,089(平均 3.5)
1,074 (74.2%)
13 (0.9%)
Largest Series Product Largest Series Product
2,108
13,068(平均 6.2)
1,667 (79.1%)
23 (1.1%)
Luhn Luhn
2,793
13,914(平均 5.0)
2,180 (78.1%)
51 (1.8%)
Matrix Matrix
3,449
17,856(平均 5.2)
2,592 (75.2%)
314 (9.1%)
Nth Prime Nth Prime
1,630
6,332(平均 3.9)
1,270 (77.9%)
21 (1.3%)
Prism Prism
146
1,034(平均 7.1)
65 (44.5%)
0 (0.0%)
Proverb Proverb
2,990
8,868(平均 3.0)
2,428 (81.2%)
34 (1.1%)
Rate Limiter Rate Limiter
307
1,355(平均 4.4)
165 (53.7%)
4 (1.3%)
Rotational Cipher Rotational Cipher
2,595
13,084(平均 5.0)
2,177 (83.9%)
226 (8.7%)
Saddle Points Saddle Points
1,955
8,925(平均 4.6)
1,338 (68.4%)
161 (8.2%)
Sieve Sieve
1,603
4,645(平均 2.9)
1,275 (79.5%)
25 (1.6%)
Split-Second Stopwatch Split-Second Stopwatch
229
1,895(平均 8.3)
148 (64.6%)
0 (0.0%)
Sum of Multiples Sum of Multiples
2,209
8,028(平均 3.6)
1,626 (73.6%)
39 (1.8%)
Swift Scheduling Swift Scheduling
206
1,934(平均 9.4)
140 (68.0%)
1 (0.5%)
Triangle Triangle
3,050
12,366(平均 4.1)
2,590 (84.9%)
262 (8.6%)
Twelve Days Twelve Days
2,837
15,628(平均 5.5)
2,134 (75.2%)
33 (1.2%)
Variable Length Quantity Variable Length Quantity
766
3,060(平均 4.0)
400 (52.2%)
2 (0.3%)
Yacht Yacht
1,697
8,282(平均 4.9)
1,128 (66.5%)
31 (1.8%)
Allergies Allergies
1,444
5,116(平均 3.5)
1,088 (75.3%)
25 (1.7%)
Atbash Cipher Atbash Cipher
912
5,085(平均 5.6)
726 (79.6%)
8 (0.9%)
Bob Bob
2,276
13,868(平均 6.1)
1,845 (81.1%)
61 (2.7%)
Flatten Array Flatten Array
1,870
8,333(平均 4.5)
1,396 (74.7%)
137 (7.3%)
Conway's Game of Life Conway's Game of Life
501
2,342(平均 4.7)
314 (62.7%)
1 (0.2%)
Grep Grep
786
3,982(平均 5.1)
432 (55.0%)
7 (0.9%)
Knapsack Knapsack
1,029
4,759(平均 4.6)
609 (59.2%)
10 (1.0%)
Ledger Ledger
460
3,261(平均 7.1)
253 (55.0%)
9 (2.0%)
Matching Brackets Matching Brackets
907
3,457(平均 3.8)
650 (71.7%)
10 (1.1%)
Nucleotide Count Nucleotide Count
2,232
6,666(平均 3.0)
1,982 (88.8%)
91 (4.1%)
Pascal's Triangle Pascal's Triangle
891
2,452(平均 2.8)
635 (71.3%)
5 (0.6%)
Phone Number Phone Number
1,619
9,420(平均 5.8)
1,230 (76.0%)
26 (1.6%)
Pig Latin Pig Latin
2,773
12,269(平均 4.4)
1,552 (56.0%)
76 (2.7%)
Prime Factors Prime Factors
962
2,922(平均 3.0)
736 (76.5%)
11 (1.1%)
Relative Distance Relative Distance
942
5,652(平均 6.0)
400 (42.5%)
8 (0.8%)
Robot Name Robot Name
1,916
10,772(平均 5.6)
1,561 (81.5%)
139 (7.3%)
Run-Length Encoding Run-Length Encoding
723
3,154(平均 4.4)
515 (71.2%)
9 (1.2%)
Series Series
1,081
3,270(平均 3.0)
884 (81.8%)
11 (1.0%)
Square Root Square Root
636
1,922(平均 3.0)
502 (78.9%)
9 (1.4%)
Word Count Word Count
2,963
17,250(平均 5.8)
2,255 (76.1%)
213 (7.2%)
State Of Tic Tac Toe State Of Tic Tac Toe
380
2,579(平均 6.8)
229 (60.3%)
6 (1.6%)
Affine Cipher Affine Cipher
424
3,148(平均 7.4)
277 (65.3%)
4 (0.9%)
All Your Base All Your Base
572
2,922(平均 5.1)
389 (68.0%)
2 (0.3%)
Alphametics Alphametics
609
2,657(平均 4.4)
249 (40.9%)
3 (0.5%)
Baffling Birthdays Baffling Birthdays
90
411(平均 4.6)
53 (58.9%)
0 (0.0%)
Bank Account Bank Account
1,751
9,503(平均 5.4)
1,201 (68.6%)
96 (5.5%)
Binary Search Binary Search
1,414
7,806(平均 5.5)
1,064 (75.2%)
94 (6.6%)
Bottle Song Bottle Song
859
7,695(平均 9.0)
543 (63.2%)
19 (2.2%)
Bowling Bowling
1,017
8,270(平均 8.1)
437 (43.0%)
11 (1.1%)
Camicia Camicia
41
345(平均 8.4)
23 (56.1%)
0 (0.0%)
ETL ETL
1,869
2,912(平均 1.6)
1,682 (90.0%)
128 (6.8%)
Flower Field Flower Field
115
491(平均 4.3)
78 (67.8%)
0 (0.0%)
Food Chain Food Chain
931
3,541(平均 3.8)
623 (66.9%)
11 (1.2%)
Grade School Grade School
895
3,042(平均 3.4)
640 (71.5%)
22 (2.5%)
House House
1,004
3,761(平均 3.7)
718 (71.5%)
10 (1.0%)
Intergalactic Transmission Intergalactic Transmission
920
1,846(平均 2.0)
101 (11.0%)
5 (0.5%)
Linked List Linked List
1,468
6,366(平均 4.3)
1,035 (70.5%)
78 (5.3%)
Parallel Letter Frequency Parallel Letter Frequency
796
3,685(平均 4.6)
491 (61.7%)
13 (1.6%)
Piecing It Together Piecing It Together
82
761(平均 9.3)
42 (51.2%)
0 (0.0%)
Queen Attack Queen Attack
2,076
7,877(平均 3.8)
778 (37.5%)
34 (1.6%)
Rail Fence Cipher Rail Fence Cipher
402
1,567(平均 3.9)
242 (60.2%)
1 (0.2%)
REST API REST API
794
4,387(平均 5.5)
196 (24.7%)
5 (0.6%)
Robot Simulator Robot Simulator
859
2,758(平均 3.2)
544 (63.3%)
10 (1.2%)
Roman Numerals Roman Numerals
1,226
3,793(平均 3.1)
895 (73.0%)
15 (1.2%)
Spiral Matrix Spiral Matrix
633
1,607(平均 2.5)
397 (62.7%)
6 (0.9%)
Tournament Tournament
783
3,846(平均 4.9)
398 (50.8%)
10 (1.3%)
Transpose Transpose
579
2,968(平均 5.1)
316 (54.6%)
2 (0.3%)
Wordy Wordy
607
2,783(平均 4.6)
358 (59.0%)
6 (1.0%)
Anagram Anagram
3,200
10,471(平均 3.3)
2,299 (71.8%)
114 (3.6%)
Binary Search Tree Binary Search Tree
688
2,936(平均 4.3)
388 (56.4%)
9 (1.3%)
Clock Clock
573
2,390(平均 4.2)
386 (67.4%)
3 (0.5%)
Crypto Square Crypto Square
469
1,879(平均 4.0)
316 (67.4%)
3 (0.6%)
Dominoes Dominoes
1,098
3,192(平均 2.9)
293 (26.7%)
9 (0.8%)
Go Counting Go Counting
514
1,502(平均 2.9)
190 (37.0%)
0 (0.0%)
Markdown Markdown
952
2,238(平均 2.4)
394 (41.4%)
14 (1.5%)
Meetup Meetup
916
2,448(平均 2.7)
709 (77.4%)
13 (1.4%)
Poker Poker
778
2,691(平均 3.5)
237 (30.5%)
6 (0.8%)
SGF Parsing SGF Parsing
157
1,947(平均 12.4)
87 (55.4%)
2 (1.3%)
Simple Linked List Simple Linked List
785
4,049(平均 5.2)
470 (59.9%)
10 (1.3%)
Sublist Sublist
520
1,846(平均 3.6)
332 (63.8%)
0 (0.0%)
Tree Building Tree Building
351
845(平均 2.4)
160 (45.6%)
3 (0.9%)
Two Bucket Two Bucket
407
1,185(平均 2.9)
180 (44.2%)
3 (0.7%)
Word Search Word Search
897
2,578(平均 2.9)
284 (31.7%)
5 (0.6%)
Zebra Puzzle Zebra Puzzle
3,189
2,879(平均 0.9)
522 (16.4%)
12 (0.4%)
Zipper Zipper
331
966(平均 2.9)
146 (44.1%)
0 (0.0%)
Book Store Book Store
674
2,325(平均 3.4)
234 (34.7%)
6 (0.9%)
Change Change
575
3,383(平均 5.9)
241 (41.9%)
4 (0.7%)
Circular Buffer Circular Buffer
616
2,432(平均 3.9)
375 (60.9%)
5 (0.8%)
Complex Numbers Complex Numbers
665
2,314(平均 3.5)
417 (62.7%)
11 (1.7%)
Connect Connect
359
1,804(平均 5.0)
187 (52.1%)
7 (1.9%)
Hangman Hangman
378
1,129(平均 3.0)
101 (26.7%)
6 (1.6%)
List Ops List Ops
559
2,358(平均 4.2)
300 (53.7%)
9 (1.6%)
Mazy Mice Mazy Mice
155
716(平均 4.6)
71 (45.8%)
4 (2.6%)
OCR Numbers OCR Numbers
395
842(平均 2.1)
211 (53.4%)
3 (0.8%)
Palindrome Products Palindrome Products
483
1,464(平均 3.0)
256 (53.0%)
5 (1.0%)
POV POV
169
780(平均 4.6)
82 (48.5%)
1 (0.6%)
Rational Numbers Rational Numbers
524
3,367(平均 6.4)
282 (53.8%)
6 (1.1%)
React React
275
1,137(平均 4.1)
90 (32.7%)
2 (0.7%)
Rectangles Rectangles
374
886(平均 2.4)
188 (50.3%)
4 (1.1%)
Simple Cipher Simple Cipher
537
1,806(平均 3.4)
347 (64.6%)
7 (1.3%)
Forth Forth
529
1,849(平均 3.5)
217 (41.0%)
13 (2.5%)
Pythagorean Triplet Pythagorean Triplet
1,087
6,718(平均 6.2)
472 (43.4%)
7 (0.6%)
Custom Set Custom Set
596
2,096(平均 3.5)
268 (45.0%)
5 (0.8%)
Satellite Satellite
531
1,135(平均 2.1)
179 (33.7%)
4 (0.8%)
9 个已弃用的练习
已开始
尝试次数
完成次数
指导请求
Accumulate Accumulate
110
138(平均 1.3)
107 (97.3%)
5 (4.5%)
Beer Song Beer Song
867
3,388(平均 3.9)
664 (76.6%)
15 (1.7%)
Binary Binary
136
181(平均 1.3)
134 (98.5%)
6 (4.4%)
Diffie-Hellman Diffie-Hellman
228
327(平均 1.4)
117 (51.3%)
2 (0.9%)
Hexadecimal Hexadecimal
58
74(平均 1.3)
56 (96.6%)
7 (12.1%)
Minesweeper Minesweeper
795
2,853(平均 3.6)
519 (65.3%)
9 (1.1%)
Octal Octal
59
70(平均 1.2)
57 (96.6%)
2 (3.4%)
Strain Strain
111
141(平均 1.3)
108 (97.3%)
5 (4.5%)
Trinary Trinary
71
85(平均 1.2)
69 (97.2%)
1 (1.4%)
3 个未实现的练习
Line Up Line Up
PaaS I/O PaaS I/O
Save the Cow Save the Cow
1 个已放弃的练习
Lens Person Lens Person

测试运行器

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创建只承担单一职责的测试运行器:接收一份解答、运行所有测试,并返回标准化的输出。

当前版本: 149e8132a1ca50237d80ccbf402cc1104dc41eb1 (部署最多需要 10 分钟)

测试运行器运行总次数
4,792,682
测试运行通过率
17.3% (827625)
测试运行失败率
38.1% (1828255)
测试运行错误率
44.6% (2136802)

表示器

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构建表示器:一小段代码,它唯一的职责就是接收一份解答并返回该解答的规范化表示。

当前版本: c84371546bbb96407e400b7e18d7fcc204a0b29c (部署最多需要 10 分钟)

表示器运行总次数
945,057
表示评论总数
109,095
提供反馈的频率
11.5%

分析器

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为 Java 构建分析器:Exercism 的分析器会自动评估学员的提交,并提供导师式的点评。

当前版本: 3b609b65df1ca5622fea622d4d1169013ad1f7a5 (部署最多需要 10 分钟)

分析器运行总次数
660,336
分析评论总数
426,537
给出反馈的频率
4.3%