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
286,436
提交
4,954,440
引導討論
17,800

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。
27 個正在教授的概念
Ba
Basics
62,684 人已學習
Bo
Booleans
36,368 人已學習
Ar
Arrays
18,810 人已學習
Fo
For Loops
18,810 人已學習
Fo
For-Each Loops
18,810 人已學習
Ge
Generic Types
13,612 人已學習
Li
Lists
13,612 人已學習
Ex
Exceptions
7,076 人已學習
Ch
Chars
11,940 人已學習
Cl
Classes
12,882 人已學習
Co
Constructors
9,423 人已學習
In
Interfaces
6,984 人已學習
If
If-Else Statements
19,110 人已學習
Nu
Numbers
19,110 人已學習
St
Strings
24,028 人已學習
Te
Ternary Operators
11,254 人已學習
Sw
Switch Statements
8,139 人已學習
In
Inheritance
7,345 人已學習
En
Enums
4,391 人已學習
Nu
Nullability
7,849 人已學習
Ra
Randomness
5,107 人已學習
Da
Date-Time
5,295 人已學習
Me
Method Overloading
3,655 人已學習
Bi
Bit Manipulation
4,698 人已學習
Se
Sets
3,577 人已學習
Ma
Maps
2,713 人已學習
Te
Temporal Adjusters
44 人已學習
23 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
103,449
564,545(平均 5.5)
62,684 (60.6%)
497 (0.5%)
Annalyn's Infiltration Annalyn's Infiltration
48,917
451,094(平均 9.2)
36,368 (74.3%)
315 (0.6%)
Bird Watcher Bird Watcher
22,951
310,729(平均 13.5)
18,810 (82.0%)
488 (2.1%)
Karl's Languages Karl's Languages
15,192
85,703(平均 5.6)
13,612 (89.6%)
118 (0.8%)
Calculator Conundrum Calculator Conundrum
8,684
114,164(平均 13.1)
7,076 (81.5%)
118 (1.4%)
Squeaky Clean Squeaky Clean
17,664
256,040(平均 14.5)
11,940 (67.6%)
500 (2.8%)
Jedlik's Toy Car Jedlik's Toy Car
14,143
121,464(平均 8.6)
12,882 (91.1%)
157 (1.1%)
Need for Speed Need for Speed
10,841
133,491(平均 12.3)
9,423 (86.9%)
80 (0.7%)
Remote Control Competition Remote Control Competition
8,792
92,469(平均 10.5)
6,984 (79.4%)
105 (1.2%)
Cars, Assemble! Cars, Assemble!
21,296
156,934(平均 7.4)
19,110 (89.7%)
426 (2.0%)
Log Levels Log Levels
36,676
324,277(平均 8.8)
24,028 (65.5%)
303 (0.8%)
Salary Calculator Salary Calculator
12,143
71,122(平均 5.9)
11,254 (92.7%)
43 (0.4%)
Football Match Reports Football Match Reports
8,448
34,750(平均 4.1)
8,139 (96.3%)
58 (0.7%)
Wizards and Warriors Wizards and Warriors
8,082
59,304(平均 7.3)
7,345 (90.9%)
39 (0.5%)
Logs, Logs, Logs! Logs, Logs, Logs!
5,147
51,758(平均 10.1)
4,391 (85.3%)
62 (1.2%)
Tim from Marketing Tim from Marketing
8,317
54,606(平均 6.6)
7,849 (94.4%)
66 (0.8%)
Captain's Log Captain's Log
5,431
33,550(平均 6.2)
5,107 (94.0%)
21 (0.4%)
Booking Up For Beauty Booking Up For Beauty
6,402
84,494(平均 13.2)
5,295 (82.7%)
53 (0.8%)
Wizards and Warriors 2 Wizards and Warriors 2
4,020
34,961(平均 8.7)
3,655 (90.9%)
21 (0.5%)
Secrets Secrets
5,395
29,117(平均 5.4)
4,698 (87.1%)
7 (0.1%)
Gotta Snatch 'Em All Gotta Snatch 'Em All
4,153
49,353(平均 11.9)
3,577 (86.1%)
58 (1.4%)
International Calling Connoisseur International Calling Connoisseur
3,163
33,916(平均 10.7)
2,713 (85.8%)
33 (1.0%)
Beauty Salon Regulars Beauty Salon Regulars
67
621(平均 9.3)
44 (65.7%)
1 (1.5%)
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
85,974(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: be2d006c30c50e0154231dd987d5a3b5526c0427 (更新應該是即時的)

下一個目標:實作 140 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
225,609
456,736(平均 2.0)
138,461 (61.4%)
40 (0.0%)
Leap Leap
8,691
32,996(平均 3.8)
7,044 (81.0%)
119 (1.4%)
Reverse String Reverse String
16,298
49,211(平均 3.0)
13,633 (83.6%)
331 (2.0%)
Two Fer Two Fer
24,480
78,602(平均 3.2)
19,530 (79.8%)
3,929 (16.0%)
Armstrong Numbers Armstrong Numbers
7,787
27,705(平均 3.6)
6,258 (80.4%)
151 (1.9%)
Darts Darts
7,755
26,992(平均 3.5)
6,138 (79.1%)
67 (0.9%)
D&D Character D&D Character
5,231
43,721(平均 8.4)
3,712 (71.0%)
78 (1.5%)
DOT DSL DOT DSL
1,766
8,204(平均 4.6)
1,108 (62.7%)
9 (0.5%)
Grains Grains
5,232
41,084(平均 7.9)
4,252 (81.3%)
55 (1.1%)
High Scores High Scores
2,983
23,601(平均 7.9)
2,388 (80.1%)
38 (1.3%)
Resistor Color Resistor Color
6,940
26,264(平均 3.8)
5,632 (81.2%)
74 (1.1%)
Resistor Color Duo Resistor Color Duo
4,942
16,448(平均 3.3)
4,202 (85.0%)
47 (1.0%)
Resistor Color Trio Resistor Color Trio
1,928
21,501(平均 11.2)
1,643 (85.2%)
40 (2.1%)
RNA Transcription RNA Transcription
6,992
18,612(平均 2.7)
5,927 (84.8%)
243 (3.5%)
Acronym Acronym
4,955
21,891(平均 4.4)
3,984 (80.4%)
99 (2.0%)
Difference of Squares Difference of Squares
7,252
24,577(平均 3.4)
6,364 (87.8%)
711 (9.8%)
Gigasecond Gigasecond
8,827
21,071(平均 2.4)
6,379 (72.3%)
1,345 (15.2%)
Hamming Hamming
8,848
33,473(平均 3.8)
7,310 (82.6%)
1,495 (16.9%)
Micro Blog Micro Blog
7,051
39,530(平均 5.6)
4,361 (61.8%)
104 (1.5%)
Pangram Pangram
5,779
15,851(平均 2.7)
4,832 (83.6%)
173 (3.0%)
Perfect Numbers Perfect Numbers
3,806
14,741(平均 3.9)
2,713 (71.3%)
54 (1.4%)
Eliud's Eggs Eliud's Eggs
1,440
4,663(平均 3.2)
1,296 (90.0%)
17 (1.2%)
Protein Translation Protein Translation
3,917
20,581(平均 5.3)
3,097 (79.1%)
62 (1.6%)
Raindrops Raindrops
8,557
22,798(平均 2.7)
7,239 (84.6%)
258 (3.0%)
Say Say
2,956
20,006(平均 6.8)
1,374 (46.5%)
42 (1.4%)
Scrabble Score Scrabble Score
6,485
23,662(平均 3.6)
5,484 (84.6%)
1,085 (16.7%)
Secret Handshake Secret Handshake
4,407
22,142(平均 5.0)
3,400 (77.1%)
468 (10.6%)
Space Age Space Age
4,776
11,124(平均 2.3)
3,696 (77.4%)
65 (1.4%)
Collatz Conjecture Collatz Conjecture
2,433
9,718(平均 4.0)
2,008 (82.5%)
38 (1.6%)
Diamond Diamond
3,047
16,341(平均 5.4)
2,018 (66.2%)
57 (1.9%)
Error Handling Error Handling
2,136
15,298(平均 7.2)
1,250 (58.5%)
7 (0.3%)
ISBN Verifier ISBN Verifier
2,941
14,543(平均 4.9)
2,319 (78.9%)
44 (1.5%)
Isogram Isogram
5,383
20,649(平均 3.8)
4,367 (81.1%)
172 (3.2%)
Killer Sudoku Helper Killer Sudoku Helper
931
4,999(平均 5.4)
513 (55.1%)
18 (1.9%)
Kindergarten Garden Kindergarten Garden
1,462
5,176(平均 3.5)
1,088 (74.4%)
13 (0.9%)
Largest Series Product Largest Series Product
2,126
13,227(平均 6.2)
1,682 (79.1%)
23 (1.1%)
Luhn Luhn
2,815
14,052(平均 5.0)
2,198 (78.1%)
51 (1.8%)
Matrix Matrix
3,465
17,967(平均 5.2)
2,606 (75.2%)
314 (9.1%)
Nth Prime Nth Prime
1,644
6,427(平均 3.9)
1,285 (78.2%)
22 (1.3%)
Prism Prism
165
1,162(平均 7.0)
77 (46.7%)
1 (0.6%)
Proverb Proverb
3,005
8,953(平均 3.0)
2,441 (81.2%)
34 (1.1%)
Rate Limiter Rate Limiter
332
1,450(平均 4.4)
181 (54.5%)
5 (1.5%)
Rotational Cipher Rotational Cipher
2,606
13,151(平均 5.0)
2,186 (83.9%)
226 (8.7%)
Saddle Points Saddle Points
1,961
8,965(平均 4.6)
1,342 (68.4%)
161 (8.2%)
Sieve Sieve
1,620
4,737(平均 2.9)
1,285 (79.3%)
25 (1.5%)
Split-Second Stopwatch Split-Second Stopwatch
237
1,955(平均 8.2)
156 (65.8%)
0 (0.0%)
Sum of Multiples Sum of Multiples
2,224
8,099(平均 3.6)
1,639 (73.7%)
40 (1.8%)
Swift Scheduling Swift Scheduling
214
1,991(平均 9.3)
147 (68.7%)
1 (0.5%)
Triangle Triangle
3,063
12,438(平均 4.1)
2,601 (84.9%)
262 (8.6%)
Twelve Days Twelve Days
2,846
15,695(平均 5.5)
2,142 (75.3%)
33 (1.2%)
Variable Length Quantity Variable Length Quantity
770
3,083(平均 4.0)
404 (52.5%)
2 (0.3%)
Yacht Yacht
1,700
8,304(平均 4.9)
1,130 (66.5%)
31 (1.8%)
Allergies Allergies
1,452
5,148(平均 3.5)
1,095 (75.4%)
25 (1.7%)
Atbash Cipher Atbash Cipher
917
5,110(平均 5.6)
729 (79.5%)
9 (1.0%)
Bob Bob
2,301
14,162(平均 6.2)
1,862 (80.9%)
62 (2.7%)
Flatten Array Flatten Array
1,882
8,369(平均 4.4)
1,400 (74.4%)
137 (7.3%)
Conway's Game of Life Conway's Game of Life
510
2,377(平均 4.7)
322 (63.1%)
2 (0.4%)
Grep Grep
789
3,993(平均 5.1)
435 (55.1%)
7 (0.9%)
Knapsack Knapsack
1,032
4,768(平均 4.6)
611 (59.2%)
10 (1.0%)
Ledger Ledger
463
3,267(平均 7.1)
255 (55.1%)
9 (1.9%)
Matching Brackets Matching Brackets
913
3,494(平均 3.8)
655 (71.7%)
11 (1.2%)
Nucleotide Count Nucleotide Count
2,240
6,720(平均 3.0)
1,988 (88.8%)
91 (4.1%)
Pascal's Triangle Pascal's Triangle
892
2,462(平均 2.8)
636 (71.3%)
5 (0.6%)
Phone Number Phone Number
1,621
9,429(平均 5.8)
1,232 (76.0%)
26 (1.6%)
Pig Latin Pig Latin
2,774
12,274(平均 4.4)
1,553 (56.0%)
76 (2.7%)
Prime Factors Prime Factors
966
2,926(平均 3.0)
738 (76.4%)
11 (1.1%)
Relative Distance Relative Distance
991
5,975(平均 6.0)
428 (43.2%)
9 (0.9%)
Robot Name Robot Name
1,922
10,788(平均 5.6)
1,564 (81.4%)
139 (7.2%)
Run-Length Encoding Run-Length Encoding
724
3,161(平均 4.4)
516 (71.3%)
9 (1.2%)
Series Series
1,085
3,293(平均 3.0)
887 (81.8%)
11 (1.0%)
Square Root Square Root
641
1,929(平均 3.0)
506 (78.9%)
9 (1.4%)
Word Count Word Count
2,980
17,348(平均 5.8)
2,265 (76.0%)
213 (7.1%)
State Of Tic Tac Toe State Of Tic Tac Toe
384
2,602(平均 6.8)
230 (59.9%)
6 (1.6%)
Affine Cipher Affine Cipher
425
3,164(平均 7.4)
278 (65.4%)
4 (0.9%)
All Your Base All Your Base
573
2,942(平均 5.1)
390 (68.1%)
2 (0.3%)
Alphametics Alphametics
611
2,660(平均 4.4)
251 (41.1%)
3 (0.5%)
Baffling Birthdays Baffling Birthdays
95
425(平均 4.5)
57 (60.0%)
0 (0.0%)
Bank Account Bank Account
1,759
9,617(平均 5.5)
1,205 (68.5%)
96 (5.5%)
Binary Search Binary Search
1,422
7,844(平均 5.5)
1,071 (75.3%)
94 (6.6%)
Bottle Song Bottle Song
871
7,752(平均 8.9)
549 (63.0%)
19 (2.2%)
Bowling Bowling
1,026
8,287(平均 8.1)
442 (43.1%)
11 (1.1%)
Camicia Camicia
47
354(平均 7.5)
27 (57.4%)
0 (0.0%)
ETL ETL
1,878
2,958(平均 1.6)
1,690 (90.0%)
128 (6.8%)
Flower Field Flower Field
119
494(平均 4.2)
81 (68.1%)
0 (0.0%)
Food Chain Food Chain
938
3,563(平均 3.8)
629 (67.1%)
11 (1.2%)
Grade School Grade School
908
3,133(平均 3.5)
650 (71.6%)
22 (2.4%)
House House
1,006
3,766(平均 3.7)
720 (71.6%)
10 (1.0%)
Intergalactic Transmission Intergalactic Transmission
984
1,903(平均 1.9)
108 (11.0%)
5 (0.5%)
Linked List Linked List
1,475
6,380(平均 4.3)
1,040 (70.5%)
78 (5.3%)
Parallel Letter Frequency Parallel Letter Frequency
800
3,712(平均 4.6)
494 (61.8%)
13 (1.6%)
Piecing It Together Piecing It Together
84
763(平均 9.1)
44 (52.4%)
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
403
1,568(平均 3.9)
243 (60.3%)
1 (0.2%)
REST API REST API
803
4,452(平均 5.5)
203 (25.3%)
5 (0.6%)
Robot Simulator Robot Simulator
868
2,772(平均 3.2)
548 (63.1%)
10 (1.2%)
Roman Numerals Roman Numerals
1,229
3,794(平均 3.1)
896 (72.9%)
15 (1.2%)
Spiral Matrix Spiral Matrix
637
1,618(平均 2.5)
400 (62.8%)
6 (0.9%)
Tournament Tournament
799
4,024(平均 5.0)
406 (50.8%)
10 (1.3%)
Transpose Transpose
582
3,027(平均 5.2)
319 (54.8%)
2 (0.3%)
Wordy Wordy
611
2,845(平均 4.7)
359 (58.8%)
6 (1.0%)
Anagram Anagram
3,209
10,564(平均 3.3)
2,308 (71.9%)
114 (3.6%)
Binary Search Tree Binary Search Tree
695
2,987(平均 4.3)
390 (56.1%)
9 (1.3%)
Clock Clock
584
2,467(平均 4.2)
388 (66.4%)
3 (0.5%)
Crypto Square Crypto Square
472
1,922(平均 4.1)
318 (67.4%)
3 (0.6%)
Dominoes Dominoes
1,100
3,218(平均 2.9)
293 (26.6%)
9 (0.8%)
Go Counting Go Counting
515
1,503(平均 2.9)
191 (37.1%)
0 (0.0%)
Markdown Markdown
958
2,243(平均 2.3)
397 (41.4%)
14 (1.5%)
Meetup Meetup
917
2,450(平均 2.7)
710 (77.4%)
13 (1.4%)
Poker Poker
783
2,706(平均 3.5)
238 (30.4%)
6 (0.8%)
SGF Parsing SGF Parsing
157
1,948(平均 12.4)
88 (56.1%)
2 (1.3%)
Simple Linked List Simple Linked List
791
4,076(平均 5.2)
472 (59.7%)
10 (1.3%)
Sublist Sublist
520
1,846(平均 3.6)
332 (63.8%)
0 (0.0%)
Tree Building Tree Building
352
846(平均 2.4)
161 (45.7%)
3 (0.9%)
Two Bucket Two Bucket
410
1,187(平均 2.9)
181 (44.1%)
3 (0.7%)
Word Search Word Search
899
2,608(平均 2.9)
286 (31.8%)
5 (0.6%)
Zebra Puzzle Zebra Puzzle
3,239
2,927(平均 0.9)
532 (16.4%)
13 (0.4%)
Zipper Zipper
334
973(平均 2.9)
148 (44.3%)
0 (0.0%)
Book Store Book Store
680
2,343(平均 3.4)
238 (35.0%)
6 (0.9%)
Change Change
581
3,407(平均 5.9)
243 (41.8%)
4 (0.7%)
Circular Buffer Circular Buffer
619
2,460(平均 4.0)
378 (61.1%)
5 (0.8%)
Complex Numbers Complex Numbers
670
2,318(平均 3.5)
418 (62.4%)
11 (1.6%)
Connect Connect
360
1,806(平均 5.0)
188 (52.2%)
7 (1.9%)
Hangman Hangman
381
1,130(平均 3.0)
102 (26.8%)
6 (1.6%)
List Ops List Ops
569
2,380(平均 4.2)
305 (53.6%)
10 (1.8%)
Mazy Mice Mazy Mice
158
718(平均 4.5)
72 (45.6%)
4 (2.5%)
OCR Numbers OCR Numbers
395
842(平均 2.1)
211 (53.4%)
3 (0.8%)
Palindrome Products Palindrome Products
485
1,492(平均 3.1)
258 (53.2%)
5 (1.0%)
POV POV
173
781(平均 4.5)
83 (48.0%)
1 (0.6%)
Rational Numbers Rational Numbers
531
3,396(平均 6.4)
285 (53.7%)
6 (1.1%)
React React
282
1,140(平均 4.0)
91 (32.3%)
2 (0.7%)
Rectangles Rectangles
376
898(平均 2.4)
190 (50.5%)
4 (1.1%)
Simple Cipher Simple Cipher
539
1,820(平均 3.4)
349 (64.7%)
7 (1.3%)
Forth Forth
531
1,891(平均 3.6)
217 (40.9%)
13 (2.4%)
Pythagorean Triplet Pythagorean Triplet
1,090
6,725(平均 6.2)
474 (43.5%)
7 (0.6%)
Custom Set Custom Set
606
2,130(平均 3.5)
273 (45.0%)
5 (0.8%)
Satellite Satellite
537
1,143(平均 2.1)
182 (33.9%)
4 (0.7%)
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%)
4 個尚未實作的練習題
Line Up Line Up
PaaS I/O PaaS I/O
Resistor Color Tolerance Resistor Color Tolerance
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: 3f0677266bdae1fa5828cde474d4d65e57f4d967 (部署最多需要 10 分鐘)

測試執行器總執行次數
4,867,752
測試執行通過率
17.3% (841623)
測試執行失敗率
38.1% (1855840)
測試執行錯誤率
44.6% (2170289)

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: 0dacac5bc7ce92d4a2612ffa8eb4c7eac24d3219 (部署最多需要 10 分鐘)

Representer 執行總次數
957,905
表示法評論總數
112,199
回饋頻率
11.7%

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: 1a09c2c7f5539c77344519ba8a7b6561ad51adde (部署最多需要 10 分鐘)

分析器執行總次數
673,170
分析評論總數
436,098
提供回饋的頻率
4.3%