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´ó¼Ò¶¼ÖªµÀJAVAÖÐ int ÀàÐÍҪת»¯³É String ÀàÐÍ£¬¿ÉÒÔÓÐÈýÖÖ·½Ê½£¬·Ö±ðÊÇ£º
* (1) String.valueOf(i)
* (2) Integer.toString(i)
* (3) i+""
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public class TestIntToStr {
public static void main(String[] args) {
int[] intArr = new int[1000000];
String[] strArr1 = new String[1000000];//ΪÁ˹«Æ½·Ö±ð¶¨ÒåÈý¸öÊý×é
String[] strArr2 = new String[1000000];
String[] strArr3 = new String[1000000];
//¸³Öµ
Long t1 = System.currentTimeMillis();
for(int i=0;i<1000000;i++){
intArr[i]=i+1;
}
Long t2 = System.currentTimeMillis();
for(int i=0;i<1000000;i++){
strArr1[i] = String.valueOf(intArr[i]);
}
Long t3 = System.currentTimeMillis();
for(int i=0;i<1000000;i++){
strArr2[i] = Integer.toString(intArr[i]);
}
Long t4 = System.currentTimeMillis();
for(int i=0;i<1000000;i++){
strArr3[i] = intArr[i]+"";
}
Long t5 = System.currentTimeMillis();
System.out.println("t1 = "+t1); &
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import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
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http://www.cnblogs.com/anran_guojianjun/archive/2009/04/14/1435278.html
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