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[JAVA]用Java实现的各种排序

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用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 r}R^<y@I  
插入排序: E#<7\ p>  
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package org.rut.util.algorithm.support; }0BL0N`_  
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import org.rut.util.algorithm.SortUtil; ApG'jN  
/** gHvW e  
* @author treeroot #juGD9e  
* @since 2006-2-2 7sud/*+F  
* @version 1.0 Sf'i{xye  
*/ :/@k5#DY  
public class InsertSort implements SortUtil.Sort{ BH&/2tO%  
X:G& 5  
/* (non-Javadoc) QJ a4R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hGed/Yr  
*/ B:O+*3j  
public void sort(int[] data) { '!wPnYT@D  
int temp; ^V<J69ny|9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6%ZHP?  
} H_?;h-Y]  
} 1UW s_|X!  
} e(}oq"'z  
h4Xc Kv+  
} WYwzo V-  
_x\-!&[p  
冒泡排序: +R "AA_A?  
*CeQY M  
package org.rut.util.algorithm.support; ;Ze"<U  
7szls71/=  
import org.rut.util.algorithm.SortUtil; j`2B}@2  
MV0<^/p|  
/** 4ef*9|^x#  
* @author treeroot a9#W9eP  
* @since 2006-2-2 w::r?.9  
* @version 1.0 ^273l(CZ1  
*/ < Gr9^C  
public class BubbleSort implements SortUtil.Sort{ bbd0ocva  
3D 9N: c  
/* (non-Javadoc) Az9X#h.vf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x*unye7  
*/ Z$!C=  
public void sort(int[] data) { @+?+6sS  
int temp; AA))KBXq  
for(int i=0;i for(int j=data.length-1;j>i;j--){ >vQ6V'F  
if(data[j] SortUtil.swap(data,j,j-1); _&W0e}4  
} kU #:I9PO  
} f\h%; X  
} ,dHP`j ?  
} z@!^ow)`J  
Y*Y&)k6 t  
} rGTWcJ   
3AvVU]@&Z@  
选择排序: PqT"jOF]n  
;c>>$lr  
package org.rut.util.algorithm.support; 6RH/V:YY  
+jp|Y?6Z  
import org.rut.util.algorithm.SortUtil; xJvLuzUD  
u=vh Z%A]  
/** 8W-]t1O%!  
* @author treeroot 5{')GTdX>  
* @since 2006-2-2 "w*@R8v  
* @version 1.0 shM{Y9~O9&  
*/ \4OK!6LkI  
public class SelectionSort implements SortUtil.Sort { B^Xy0fq  
R `;o!B}[  
/* H \r`7  
* (non-Javadoc) ,q8(]n 4  
* ]|,vCKju  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iH[E= 6*  
*/ +yth_9  
public void sort(int[] data) { De;,=BSp  
int temp; e@[9C(5E"  
for (int i = 0; i < data.length; i++) { >RM 0=bO  
int lowIndex = i;  \C|;F  
for (int j = data.length - 1; j > i; j--) { w3<Z?lj:  
if (data[j] < data[lowIndex]) { EtGH\?d~]  
lowIndex = j; ?Rlgv5P!  
} 2[.5oz`  
} R @"`~#$$  
SortUtil.swap(data,i,lowIndex); >[K0=nA  
} mDZ=Due1  
} {U(Bfe^a,  
w]n 4KR4  
} ]X*YAPv  
9^oo-,Su_  
Shell排序: y0;,dv]  
/a%*u6z@  
package org.rut.util.algorithm.support; 9QX4R<"wUg  
l#Yx TY  
import org.rut.util.algorithm.SortUtil; DK)u)?!  
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/** K~USK?Q%  
* @author treeroot 1x { XE*%;  
* @since 2006-2-2 M z9 3  
* @version 1.0 _O$tuC%  
*/ %Hh3u$Y,  
public class ShellSort implements SortUtil.Sort{ o5>/}wIf  
}gCG&7C  
/* (non-Javadoc) U%L -NMe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vsH3{:&;"P  
*/ [4Y[?)7  
public void sort(int[] data) { :H{Bb{B%  
for(int i=data.length/2;i>2;i/=2){ i9KTX%s5^  
for(int j=0;j insertSort(data,j,i); {-Yee[d<?  
} <p09oZ{6  
} [ qiOd!  
insertSort(data,0,1); R^w}o,/  
} M]1;  
GN0duV  
/** ?C}sR:K/  
* @param data ^ZR8s^X  
* @param j O"qR}W  
* @param i ):S!Nl  
*/ 2pz4rc  
private void insertSort(int[] data, int start, int inc) { MZ)T0|S_  
int temp; A hR0zg  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~,T+JX  
} F%}7cm2  
} \Y9I~8\ gB  
} vuZf#\zh}  
YhS{$ Z  
} mzu<C)9d,  
z<t>hzl 7  
快速排序: ><X $#  
w m19T7*L  
package org.rut.util.algorithm.support; mdaYYD=c%  
wsq LXZI  
import org.rut.util.algorithm.SortUtil; <iRWd  
X3AwM%,!  
/** 8|6~o.B.G  
* @author treeroot r( M[8@Nz  
* @since 2006-2-2 B7|c`7x(  
* @version 1.0 -rO*7HO  
*/ 5:$Xtq  
public class QuickSort implements SortUtil.Sort{ KYf;_C,$  
fL2^\dB;  
/* (non-Javadoc) !f`5B( @  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g#}tm<  
*/ 9Yn)t#G'`F  
public void sort(int[] data) { y=#j`MH{>  
quickSort(data,0,data.length-1); W]zwghxH  
} .ots?Ns  
private void quickSort(int[] data,int i,int j){ }Fm\+JOS   
int pivotIndex=(i+j)/2; ?&6Q%IUW1  
file://swap J]dW1boT@  
SortUtil.swap(data,pivotIndex,j); ^@K WYAAW5  
8]HY. $E  
int k=partition(data,i-1,j,data[j]); %{U"EZ]D!  
SortUtil.swap(data,k,j); gn^!"MN+g  
if((k-i)>1) quickSort(data,i,k-1); `4skwvS=  
if((j-k)>1) quickSort(data,k+1,j); p=vV4C:  
aV#h5s  
} _\UIc;3Gl  
/** l77'Lne  
* @param data r,0@~;zA  
* @param i L$kgK# T  
* @param j oK$ '9c5<  
* @return ]hL:33  
*/ a}dw9wU!:  
private int partition(int[] data, int l, int r,int pivot) { mVt3WZa  
do{ ncj!KyU  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #hy+ L  
SortUtil.swap(data,l,r); [8TS"ph>  
} :mP9^Do2;  
while(l SortUtil.swap(data,l,r); <n\i>A3`,S  
return l; qEZ!2R^`G  
} a(f(R&-:$Y  
'mJ13  
} +X[8wUm|^  
SwX@I6huM  
改进后的快速排序: n7S; Xve#  
=-5[Hn%  
package org.rut.util.algorithm.support; @i{]4rk lv  
++0rF\&  
import org.rut.util.algorithm.SortUtil; 50 *@.!^*  
2 eHx"Ha  
/** &}E:jt}  
* @author treeroot 2qjyFTT  
* @since 2006-2-2 DLXL!-)z  
* @version 1.0 8+ hhdy*b  
*/ ` .$&T7  
public class ImprovedQuickSort implements SortUtil.Sort { 14-]esSa  
&//2eL  
private static int MAX_STACK_SIZE=4096; TA|s@T{  
private static int THRESHOLD=10; ?9Ma^C;}  
/* (non-Javadoc)  E>"8 /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {"t5\U6cKM  
*/ \ FXp*FbQ  
public void sort(int[] data) { ~?d>fR:X  
int[] stack=new int[MAX_STACK_SIZE]; J)Ol"LXV  
>uHb ^  
int top=-1; {!r#f(?uT  
int pivot; _ ~[M+IO   
int pivotIndex,l,r; ;?`@"YG)  
%4/xH 9  
stack[++top]=0; JRo;(wqZ  
stack[++top]=data.length-1; Bq;1^gtpe  
&r:=KT3  
while(top>0){ Sz)b7:  
int j=stack[top--]; >: $"a  
int i=stack[top--]; x;(g  
lC4PKm no  
pivotIndex=(i+j)/2; bJ6p,]g  
pivot=data[pivotIndex]; YD9!=a$  
X.eB ;w/}  
SortUtil.swap(data,pivotIndex,j); e5 3,Rqi)@  
O J>iq@ >  
file://partition WN\PX!K9  
l=i-1; a%*_2#  
r=j; -K^41W71  
do{ tgB=vIw?3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1]Lh'.1^  
SortUtil.swap(data,l,r); P7UJ-2%Y+  
} R>HY:-2  
while(l SortUtil.swap(data,l,r); }1@E"6kF  
SortUtil.swap(data,l,j); f"P$f8$  
_A3X6  
if((l-i)>THRESHOLD){ @ZG>mP1Vo  
stack[++top]=i; Zw24f1iY  
stack[++top]=l-1; 8i[LR#D)  
} Yv=g^tw  
if((j-l)>THRESHOLD){ T%~SM5  
stack[++top]=l+1; A2 BRbwr>  
stack[++top]=j; -N4z-ozhC  
} GXYj+ qJ  
@,e8t BL  
} #9,=Owup  
file://new InsertSort().sort(data); \4QH/e  
insertSort(data); ~bGC/I;W>  
} %6HX*_Mr&  
/** Cm410=b  
* @param data ,J& 9kYz  
*/ x`L+7,&n  
private void insertSort(int[] data) { }LQ\a8]<  
int temp; $Elkhe]O %  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Qt~B#R. V  
} ckWkZ 78\  
} `M0YAiG  
} bRsc-Fz6  
;W~4L+e  
} ~ k<SbFp  
I&\4C.\>  
归并排序: AK;^9b-}q:  
y]^#$dK(z  
package org.rut.util.algorithm.support; F|*tNJU>  
p&O8qAaO  
import org.rut.util.algorithm.SortUtil; AIv<f9*.:  
QoseS/  
/** > Y ] _K  
* @author treeroot \HD-vINV;  
* @since 2006-2-2 gmDR{loX  
* @version 1.0 Khap9a_q-  
*/ Kr]W o8dWy  
public class MergeSort implements SortUtil.Sort{ O{u[+g  
!t% Q{`p  
/* (non-Javadoc) .l=p[BI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /tzlbI]z  
*/ = hhvmo  
public void sort(int[] data) { QoWR@u6a  
int[] temp=new int[data.length]; Y$+QNi  
mergeSort(data,temp,0,data.length-1); lvPpCAXY  
} 6Hl < ,(vn  
o?y"]RCM  
private void mergeSort(int[] data,int[] temp,int l,int r){ :~er h}~ps  
int mid=(l+r)/2; 9t0Cj/w}  
if(l==r) return ; ` yYvYc  
mergeSort(data,temp,l,mid); :cdQ(O.m  
mergeSort(data,temp,mid+1,r); zb?kpd}r  
for(int i=l;i<=r;i++){ 7*MU2gb  
temp=data; o$t &MST?i  
} 3(o7co-f  
int i1=l; f B7ljg  
int i2=mid+1; <5k&)EoT  
for(int cur=l;cur<=r;cur++){ E|{m"RUOy  
if(i1==mid+1) 1 w17L]4  
data[cur]=temp[i2++]; ;:?*t{r4#  
else if(i2>r) Bz:&f46{  
data[cur]=temp[i1++]; %",ULtZ+  
else if(temp[i1] data[cur]=temp[i1++]; ]zcV]Qj$~  
else bM5CDzH(#X  
data[cur]=temp[i2++]; #fN/LO  
} L^)qe^%3  
} z'*ml ?  
3A d*,>!  
} D$$3fN.iEL  
"f<#.}8  
改进后的归并排序: =1IEpxh%  
>Zo-wYG  
package org.rut.util.algorithm.support; B>@D,)/bT5  
jr:drzr{I  
import org.rut.util.algorithm.SortUtil; [aHlu[,  
F:_FjxU  
/** &urb!tQ>&  
* @author treeroot gW}}5Xq  
* @since 2006-2-2 "*t6t4/Q  
* @version 1.0 W8VO)3nmD  
*/ KX=/B=3~  
public class ImprovedMergeSort implements SortUtil.Sort { M/l95fp   
hg4J2m  
private static final int THRESHOLD = 10; 2^J/6R$  
Y&:/~&'  
/* ^Eu_NUFe  
* (non-Javadoc) K#@K"N =  
* G>JxIrN0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J+i X,X  
*/ Zik m?(J  
public void sort(int[] data) { <ZV7|'^  
int[] temp=new int[data.length]; WSS(Bm|B  
mergeSort(data,temp,0,data.length-1); ExQ--!AC=  
} _Qg{ ;  
Kn. iyR  
private void mergeSort(int[] data, int[] temp, int l, int r) { {o {#]fbO%  
int i, j, k; |veBq0U  
int mid = (l + r) / 2; HwM /}-t  
if (l == r) c[Yq5Bu{y  
return; ]a=l^Pc(xN  
if ((mid - l) >= THRESHOLD) 9!cW  
mergeSort(data, temp, l, mid); .jCk#@+  
else f@L \E>t  
insertSort(data, l, mid - l + 1); =@%MV(  
if ((r - mid) > THRESHOLD) =^by0E2  
mergeSort(data, temp, mid + 1, r); cmae&Atotw  
else 1&}G+y  
insertSort(data, mid + 1, r - mid); ON NW.xHp  
kHZKj!!R  
for (i = l; i <= mid; i++) { so'eZ"A:  
temp = data; TZkTz P[  
} pIL`WE1'  
for (j = 1; j <= r - mid; j++) {  *6'_5~G  
temp[r - j + 1] = data[j + mid]; hl}dgp((  
} [-QK$~[ g  
int a = temp[l]; x7Eeb!s0f,  
int b = temp[r]; noFh p  
for (i = l, j = r, k = l; k <= r; k++) { IG>>j}  
if (a < b) { ^T=5zqRD  
data[k] = temp[i++]; ID&zY;f  
a = temp; fq{I$syY  
} else { 2AmR(vVa"  
data[k] = temp[j--]; UX?X]ZYVR  
b = temp[j]; R+C+$?4NG  
} %uF:)   
} WGluZhRuT3  
} N:5b1TdI,  
f7 K8m|  
/** omr:C8T>  
* @param data Y/#:)(&@  
* @param l VB}PNg  
* @param i s9=pV4fA~w  
*/ Ed4_<:  
private void insertSort(int[] data, int start, int len) { 5QNBB|X@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =xl7vHn7  
} -0/=k_q_  
} {3jm%ex  
} @ $ 9m>6V  
} 4D0(Fl  
?|\0)wrRf  
堆排序: WReYF+Uen  
aIY$5^x  
package org.rut.util.algorithm.support; 9[B<rz  
oVAOGHE  
import org.rut.util.algorithm.SortUtil; A7mMgb_  
VNr!|bp5  
/** 4c~*hMr y  
* @author treeroot 1V#B]x:  
* @since 2006-2-2 rAtai}Lx  
* @version 1.0 6="M0%  
*/ 5B_-nYJDt  
public class HeapSort implements SortUtil.Sort{ 9(V=Ubj  
}Z<D^Z~w  
/* (non-Javadoc) r@\,VD6J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g4?Q.'dZr  
*/ DX7Ou%P,mg  
public void sort(int[] data) { 8s\8`2=  
MaxHeap h=new MaxHeap(); x A@|I#  
h.init(data); qFB9,cUqh  
for(int i=0;i h.remove(); 8uD8or  
System.arraycopy(h.queue,1,data,0,data.length); RRK^~JQI.2  
} M p}!+K  
i G?w;  
private static class MaxHeap{ q_OY sg  
})h'""i&xn  
void init(int[] data){ `<. 7?  
this.queue=new int[data.length+1]; |E>v~qD8I  
for(int i=0;i queue[++size]=data; e-YGuWGN7  
fixUp(size); P TfN+  
} e<&_tx   
} eG a#$x?.  
Z_ iQU1  
private int size=0; ~7FEY0/  
P*?d6v,r  
private int[] queue; XY&]T'A  
g^Ugl=f,  
public int get() { ^^20vwq  
return queue[1]; n#/U@qVgc  
} v]UU&Jq8U  
3Y.d&Nz  
public void remove() { 3 LZL!^ 5N  
SortUtil.swap(queue,1,size--); D~[ N_  
fixDown(1); w yuJSB  
} <ls i.x\y<  
file://fixdown rF <iWM=  
private void fixDown(int k) { p0%6@_FT~  
int j; 4DG 9`5.  
while ((j = k << 1) <= size) { A,-[/Z K/  
if (j < size %26amp;%26amp; queue[j] j++; 98"z0nI%  
if (queue[k]>queue[j]) file://不用交换 sYW1T @  
break; 3"2<T^H]  
SortUtil.swap(queue,j,k); n]kQtjJ  
k = j; fS8XuT  
} ?(|TP^  
} 9OO0Ht4j  
private void fixUp(int k) { i75?*ld  
while (k > 1) { ,Jw\3T1V  
int j = k >> 1; .~V".tZV[  
if (queue[j]>queue[k]) Z`0r]V`Ys  
break; 3\+[38 _  
SortUtil.swap(queue,j,k); VdjU2d  
k = j; ;'Z,[a  
} Q9Xm b2LN  
}  P %U9S  
6w:g77SH)%  
} 4q@9  
Z IGbwL  
} pU'`9f Li_  
[xp~@5r'  
SortUtil: <*b]JY V@  
|{}d5Z"5;}  
package org.rut.util.algorithm; ?$`1%Y9  
KqG$zC^N  
import org.rut.util.algorithm.support.BubbleSort; ` i^`Q  
import org.rut.util.algorithm.support.HeapSort; ?()E5 4y  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]ZU:%Qhu  
import org.rut.util.algorithm.support.ImprovedQuickSort; KY(l<pm  
import org.rut.util.algorithm.support.InsertSort; [W8iM7D  
import org.rut.util.algorithm.support.MergeSort; |n-a\  
import org.rut.util.algorithm.support.QuickSort; 7!` C TE  
import org.rut.util.algorithm.support.SelectionSort; D{Jc+Q$  
import org.rut.util.algorithm.support.ShellSort; t"!8  
3qV>TE]6,  
/** %'D:bi5  
* @author treeroot 4p/V6kr&r  
* @since 2006-2-2 @zq\z$  
* @version 1.0 S3JygN*  
*/ =":V WHf  
public class SortUtil { =."WvBKg  
public final static int INSERT = 1; iu:p &h  
public final static int BUBBLE = 2; iA{chQBr  
public final static int SELECTION = 3; aF4V|?+  
public final static int SHELL = 4; gen3"\Og{  
public final static int QUICK = 5; 7p"~:1hU  
public final static int IMPROVED_QUICK = 6; 6m;wO r  
public final static int MERGE = 7; m%[2x#  
public final static int IMPROVED_MERGE = 8; DlQ[}5STF  
public final static int HEAP = 9; C>(M+qXL+  
*Tlws  
public static void sort(int[] data) { )MX1776kU  
sort(data, IMPROVED_QUICK); ?-6x]l=]  
} O}\"$n>  
private static String[] name={ jW+VUF-t  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }1^ tK(Am  
}; ?6l,   
3vvFF]D5k  
private static Sort[] impl=new Sort[]{ _`Yvfz3  
new InsertSort(), #dn%KMo2r  
new BubbleSort(), "l2N_xX;  
new SelectionSort(), [7 Kj$PB3  
new ShellSort(), gWU(uBS  
new QuickSort(), 5GWM )vrZg  
new ImprovedQuickSort(), d9e H}#OY  
new MergeSort(), e[VJ0 A=  
new ImprovedMergeSort(), nH3b<k;S  
new HeapSort() X:} 5L> '  
}; SJ|.% gn  
5IF~]5s  
public static String toString(int algorithm){ >=q!!'$:  
return name[algorithm-1]; 6[Pr<4J  
} %_X[{(  
=w>>7u$4  
public static void sort(int[] data, int algorithm) { 4@V<Suw  
impl[algorithm-1].sort(data); B #V 4  
} m#}{"d&J  
 "lnk  
public static interface Sort { + 1%^c(3  
public void sort(int[] data); =jd=Qs IL  
} rQQPs\o  
^ {]sD}Q"  
public static void swap(int[] data, int i, int j) { fB ,!|u  
int temp = data; Tk@g9\6O9  
data = data[j]; {CyPcD'$s  
data[j] = temp; C?<XtIoB  
} }JTgj  
} :@4>}k*  
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10+5=?,请输入中文答案:十五