»ùÊýÅÅÐò java Ëã·¨
package sort;
public class RadixSort {
// Çóx ÊýµÚdλÉϵÄÊý×Ö£¬ÀýÈç12345£¬Ê®Î»Êý×ÖÊÇ4 12345/10%10=4
// d=0 ±íʾ¸öλ £»d=1 ±íʾʮλ...ÒÀ´ÎÀàÍÆ
public static int digit(int d,int x){
return x/(int)Math.pow(10, d)%10;
}
public static void radixSort(int a[],int d){// d ±íʾλ£º¸öλ£¬Ê®Î»£¬°Ùλ....
// ¶¨Òå10¸öÍ°0~9£¬Ã¿¸öÍ°´æ·Å λµÄ¸öÊý£¬ÀýÈ磺98£¬100£¬23£¬18
// ¸öλ8£¬0£¬£¬3£¬8 ·Ö±ð´æ·ÅÔÚ8£¬0£¬3£¬8Í°µÄ¼ÆÊýÆ÷£¬ÆäÖÐ8ºÅÍ°=2
int count[]=new int[10];// ¶¨ÒåÊ®¸ö¼ÆÊýÆ÷±äÁ¿
for(int i:a){ // È¡Êý×éÖÐÿһλ
count[digit(d,i)]++;
System.out.println(i+":"+d+"λÉϵÄÊý×ÖÊÇ--->"+digit(d,i));
}
int i=0;
for(int c:count){
System.out.println(i+"ºÅÍ°¼ÆÊýÊý"+c);
i++;
}
// ÇóλÖÃ
System.out.println("0ºÅÍ°"+d+"λ¸öÊýÊÇ"+count[0]+",λռÊý×éλÖÃ0-"+count[0]);
for(int j=1;j<10;j++){
count[j]+=count[j-1];
System.out.println(j+"ºÅÍ°"+d+"λ¸öÊý"+(count[j]-count[j-1])+",Õ¼Êý×éλÖÃ"+count[j]);
}
// ¸´ÖÆÊý×é,
int [] temp=new int[a.length];
// temp[0]ÖеÄ0 ÅÅ dλ×îСµÄdigit(d,x)
for(int j=a.length-1;j>=0;j--){
// ×¢Ò⣺j=a.length-1; »¹ÓÐcount[9]=16 Êý×éµÄ³¤¶È£¬Òª¼õÒ»
temp[ --count[digit(d,a[j])] ] =a[j];
}
// Ò»´ÎÅÅÐòºó½á¹û,²¢¸´ÖÆ»¹Ô
for(int j=0;j<a.length;j++){
System.out.print(temp[j]+"-->");
a[j]=temp[j];
}
}
public
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