IntStream, LongStream 내 range, rangeClosed 사용해보기.
1. X Stream
- IntStream 은 int를 지정한 범위 내에서 반복문을 동작함
- LongStream dms Long을 지정한 범위 내에서 반복문을 동작함
2. range, rangeclosed
- range는 endExclusive 값 전까지만 반복
- rangeClosed는 endExclusive 를 포함하여 반복
3. IntStream
- 소스
public class IntRangeTest {
public static void main(String[] args) {
int startNum = 1;
int endNum = 9;
intRangeTest(startNum, endNum);
System.out.println("\n");
intRangeClosedTest(startNum, endNum);
System.out.println("\n");
}
private static void intRangeTest(int startNum, int endNum) {
System.out.print("IntRange Test 1 : ");
IntStream.range(startNum, endNum).forEach(System.out::print);
System.out.println();
System.out.print("IntRange Test 2 : ");
for (int i = startNum; i < endNum; i++) {
System.out.print(i);
}
}
private static void intRangeClosedTest(int startNum, int endNum) {
System.out.print("IntRangeClosed Test 1 : ");
IntStream.rangeClosed(startNum, endNum).forEach(System.out::print);
System.out.println();
System.out.print("IntRangeClosed Test 2 : ");
for (int i = startNum; i <= endNum; i++) {
System.out.print(i);
}
}
}
- 결과
4. LongStream
- 소스
public class LongRangeTest {
public static void main(String[] args) {
long startNum = 1L;
long endNum = 9L;
longRangeTest(startNum, endNum);
System.out.println("\n");
longRangeClosedTest(startNum, endNum);
System.out.println("\n");
}
private static void longRangeTest(long startNum, long endNum) {
System.out.print("LongRange Test 1 : ");
LongStream.range(startNum, endNum).forEach(System.out::print);
System.out.println();
System.out.print("LongRange Test 2 : ");
for (long i = startNum; i < endNum; i++) {
System.out.print(i);
}
}
private static void longRangeClosedTest(long startNum, long endNum) {
System.out.print("LongRangeClosed Test 1 : ");
LongStream.rangeClosed(startNum, endNum).forEach(System.out::print);
System.out.println();
System.out.print("LongRangeClosed Test 2 : ");
for (long i = startNum; i <= endNum; i++) {
System.out.print(i);
}
}
}
- 결과
