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| package Lecture9;
public class StringMain05 {
public static void main(String[] args) {
/*
long start = System.currentTimeMillis();
int sum = 0;
for(int i = 0; i < 100000; i++) {
sum += i;
}
*/
/*
for(int i = 0; i < 100000; i++) {
str += i;
str = str.concat(String.valueOf(i));
}
*/
/*
long end = System.currentTimeMillis();
System.out.println("소요시간 : " + (end-start) / 1000.0 + "초");
*/
// ------------------------------------------------------------
// StringBuffer
long start = System.currentTimeMillis();
StringBuffer sb = new StringBuffer();
for(int i = 0; i < 100000; i++) {
sb.append(i);
}
long end = System.currentTimeMillis();
System.out.println("소요시간 : " + (end-start) / 1000.0 + "초");
}
}
|
