Skip to content
Navigation Menu
Sign in
Appearance settings
Platform
AI CODE CREATION
GitHub Copilot
Write better code with AI
GitHub Copilot app
Direct agents from issue to merge
MCP Registry
Integrate external tools
DEVELOPER WORKFLOWS
Actions
Automate any workflow
Codespaces
Instant dev environments
Issues
Plan and track work
Code Review
Manage code changes
Code Quality
Enforce quality at merge
APPLICATION SECURITY
GitHub Advanced Security
Find and fix vulnerabilities
Code security
Secure your code as you build
Secret protection
Stop leaks before they start
EXPLORE
Why GitHub
Documentation
Blog
Changelog
Marketplace
View all features
Solutions
BY COMPANY SIZE
Enterprises
Small and medium teams
Startups
Nonprofits
BY USE CASE
App Modernization
DevSecOps
DevOps
CI/CD
View all use cases
BY INDUSTRY
Healthcare
Financial services
Manufacturing
Government
See all industries
View all solutions
Resources
EXPLORE BY TOPIC
AI
Software Development
DevOps
Security
View all topics
EXPLORE BY TYPE
Customer stories
Events & webinars
Ebooks & reports
Business insights
GitHub Skills
SUPPORT & SERVICES
Documentation
Customer support
Community forum
Trust center
Partners
View all resources
Open Source
COMMUNITY
GitHub Sponsors
Fund open source developers
PROGRAMS
Security Lab
Maintainer Community
GitHub Stars
Archive Program
REPOSITORIES
Topics
Trending
Collections
Enterprise
ENTERPRISE SOLUTIONS
Enterprise platform
AI-powered developer platform
AVAILABLE ADD-ONS
GitHub Advanced Security
Enterprise-grade security features
Copilot for Business
Enterprise-grade AI features
Premium Support
Enterprise-grade 24/7 support
Pricing
Search
/
Sign in
Sign up
Appearance settings
You signed in with another tab or window.
Reload
to refresh your session.
You signed out in another tab or window.
Reload
to refresh your session.
You switched accounts on another tab or window.
Reload
to refresh your session.
Dismiss alert
{{ message }}
Oraindrop
algorithm
Repository navigation
Code
Issues
Pull requests
Actions
Projects
Security and quality
Insights
More
items
Files
Expand file tree
master
Breadcrumbs
algorithm
/
algorithm
/
src
/
level1
/
Collatz.java
Copy path
Blame
More file actions
Blame
More file actions
Latest commit
History
History
History
61 lines (54 loc) · 1.86 KB
master
Breadcrumbs
algorithm
/
algorithm
/
src
/
level1
/
Collatz.java
Copy path
Top
File metadata and controls
Code
Blame
61 lines (54 loc) · 1.86 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
/*콜라츠 추측
문제 설명
1937년 Collatz란 사람에 의해 제기된 이 추측은, 주어진 수가 1이 될때까지 다음 작업을 반복하면, 모든 수를 1로 만들 수 있다는 추측입니다. 작업은 다음과 같습니다.
1-1. 입력된 수가 짝수라면 2로 나눕니다.
1-2. 입력된 수가 홀수라면 3을 곱하고 1을 더합니다.
2. 결과로 나온 수에 같은 작업을 1이 될 때까지 반복합니다.
예를 들어, 입력된 수가 6이라면 6→3→10→5→16→8→4→2→1 이 되어 총 8번 만에 1이 됩니다. 위 작업을 몇 번이나 반복해야하는지 반환하는 함수, solution을 완성해 주세요. 단, 작업을 500번을 반복해도 1이 되지 않는다면 –1을 반환해 주세요.
제한 사항
입력된 수, num은 1 이상 8000000 미만인 정수입니다.
입출력 예
n result
6 8
16 4
626332 -1
입출력 예 설명
입출력 예 #1
문제의 설명과 같습니다.
입출력 예 #2
16 -> 8 -> 4 -> 2 -> 1 이되어 총 4번만에 1이 됩니다.
입출력 예 #3
626331은 500번을 시도해도 1이 되지 못하므로 -1을 리턴해야합니다.*/
package
level1
;
public
class
Collatz
{
public
static
void
main
(
String
[]
args
) {
// TODO Auto-generated method stub
Collatz
c
=
new
Collatz
();
System
.
out
.
println
(
c
.
solution
(
626331
));
}
public
int
solution
(
int
num
) {
int
answer
=
0
;
long
quest
= (
long
)
num
;
while
(
quest
!=
1
) {
if
(
answer
>=
500
) {
return
-
1
;
}
if
(
quest
%
2
==
0
) {
quest
/=
2
;
answer
++;
System
.
out
.
println
(
"¦��"
+
quest
);
System
.
out
.
println
(
answer
);
continue
;
}
if
(
quest
%
2
==
1
) {
quest
*=
3
;
quest
+=
1
;
answer
++;
System
.
out
.
println
(
"Ȧ��"
+
quest
);
System
.
out
.
println
(
answer
);
continue
;
}
}
return
answer
;
}
}
You can’t perform that action at this time.