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algorithm
/
algorithm
/
src
/
level2
/
NextBigNumber.java
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41 lines (33 loc) · 1.19 KB
master
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algorithm
/
algorithm
/
src
/
level2
/
NextBigNumber.java
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/*다음 큰 숫자
문제 설명
자연수 n이 주어졌을 때, n의 다음 큰 숫자는 다음과 같이 정의 합니다.
조건 1. n의 다음 큰 숫자는 n보다 큰 자연수 입니다.
조건 2. n의 다음 큰 숫자와 n은 2진수로 변환했을 때 1의 갯수가 같습니다.
조건 3. n의 다음 큰 숫자는 조건 1, 2를 만족하는 수 중 가장 작은 수 입니다.
예를 들어서 78(1001110)의 다음 큰 숫자는 83(1010011)입니다.
자연수 n이 매개변수로 주어질 때, n의 다음 큰 숫자를 return 하는 solution 함수를 완성해주세요.
제한 사항
n은 1,000,000 이하의 자연수 입니다.
입출력 예
n result
78 83
15 23
입출력 예 설명
입출력 예#1
문제 예시와 같습니다.
입출력 예#2
15(1111)의 다음 큰 숫자는 23(10111)입니다.*/
package
level2
;
public
class
NextBigNumber
{
public
static
void
main
(
String
[]
args
) {
// TODO Auto-generated method stub
NextBigNumber
nbn
=
new
NextBigNumber
();
System
.
out
.
println
(
nbn
.
solution
(
78
));
}
public
int
solution
(
int
n
) {
int
answer
=
0
;
for
(
answer
=
n
+
1
;
Integer
.
bitCount
(
n
) !=
Integer
.
bitCount
(
answer
);
answer
++) {
}
return
answer
;
}
}
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