Java 軌道管理

這個頁面提供 Exercism 社群管理 Java 軌道所需的資訊與工具。

學生
283,284
提交
4,878,880
引導討論
17,725

Java 軌道 狀態健康 ✅

建置中

Java 課程大綱

了解更多

協助建立軌道的課程大綱:課程大綱是一組概念與學習練習的集合,用來教授這門程式語言的基礎要素。

下一個目標:建立一份完整的課程大綱,至少包含 30 個概念。 了解更多。
26 個正在教授的概念
Ba
Basics
61,648 人已學習
Bo
Booleans
35,720 人已學習
Ar
Arrays
18,398 人已學習
Fo
For Loops
18,398 人已學習
Fo
For-Each Loops
18,398 人已學習
Ge
Generic Types
13,310 人已學習
Li
Lists
13,310 人已學習
Ex
Exceptions
6,868 人已學習
Ch
Chars
11,720 人已學習
Cl
Classes
12,549 人已學習
Co
Constructors
9,176 人已學習
In
Interfaces
6,800 人已學習
If
If-Else Statements
18,693 人已學習
Nu
Numbers
18,693 人已學習
St
Strings
23,602 人已學習
Te
Ternary Operators
11,012 人已學習
Sw
Switch Statements
7,958 人已學習
In
Inheritance
7,167 人已學習
En
Enums
4,280 人已學習
Nu
Nullability
7,629 人已學習
Ra
Randomness
4,969 人已學習
Da
Date-Time
5,158 人已學習
Me
Method Overloading
3,567 人已學習
Bi
Bit Manipulation
4,571 人已學習
Se
Sets
3,480 人已學習
Ma
Maps
2,603 人已學習
22 個啟用中的學習練習
已開始
嘗試次數
完成次數
引導請求
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 個已棄用的學習練習
已開始
嘗試次數
完成次數
引導請求
Play Your Cards! Play Your Cards!
8,676
85,964(平均 9.9)
6,859 (79.1%)
121 (1.4%)

練習題

了解更多

練習題是為了讓學生解決任意問題而設計的練習,目標是讓他們運用目前為止學到的概念。

已同步的主要儲存庫: 9b54e9a017b84d2f62a9bbbe4f9f47dd55c2ab2d (更新應該是即時的)

下一個目標:實作 139 個練習題。 瞭解更多。
136 個啟用中的練習題
已開始
嘗試次數
完成次數
引導請求
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 個已棄用的練習題
已開始
嘗試次數
完成次數
引導請求
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 個尚未實作的練習題
Line Up Line Up
PaaS I/O PaaS I/O
Save the Cow Save the Cow
1 個已略過的練習題
Lens Person Lens Person

Test Runner

瞭解更多

建立測試執行器,讓它只負責接收解答、執行所有測試,並回傳標準化的輸出。

目前版本: 149e8132a1ca50237d80ccbf402cc1104dc41eb1 (部署最多需要 10 分鐘)

測試執行器總執行次數
4,792,682
測試執行通過率
17.3% (827625)
測試執行失敗率
38.1% (1828255)
測試執行錯誤率
44.6% (2136802)

Representer

進一步瞭解

打造 Representer:一小段程式碼,唯一的職責就是接收解決方案並回傳其正規化表示法。

目前版本: c84371546bbb96407e400b7e18d7fcc204a0b29c (部署最多需要 10 分鐘)

Representer 執行總次數
945,057
表示法評論總數
109,095
回饋頻率
11.5%

分析器

了解更多

為 Java 打造分析器:Exercism 的分析器會自動評估學生的提交內容,並提供導師風格的評論。

目前版本: 3b609b65df1ca5622fea622d4d1169013ad1f7a5 (部署最多需要 10 分鐘)

分析器執行總次數
660,336
分析評論總數
426,537
提供回饋的頻率
4.3%