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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。 R4)l4rnO  
插入排序: vR#MUKfh  
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package org.rut.util.algorithm.support; OWfB8*4@  
Te!eM{_$T  
import org.rut.util.algorithm.SortUtil; 9(X~  
/** !<h9XccN  
* @author treeroot L})fYVX  
* @since 2006-2-2 G,6`:l  
* @version 1.0 |CQjgI|;  
*/ +R$;LtR  
public class InsertSort implements SortUtil.Sort{ AvIheR  
.FYRi_Zd  
/* (non-Javadoc) h+d k2|a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )y!gApNs"  
*/ 3bLOT#t  
public void sort(int[] data) { s(5(zcBK  
int temp; ?N+pWdi  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _ZWU~38PM  
} 6V9r[,n  
} IY~I=}  
} 4`5W] J]6  
ZHwN3  
} 3>5gh8!-  
[vBP,_Tjx  
冒泡排序: R))4J  
}>f%8O}  
package org.rut.util.algorithm.support; W }Ll)7(|T  
|J-tU)|1vl  
import org.rut.util.algorithm.SortUtil; @VND}{j  
t ~]' {[F  
/** )abH//Pps.  
* @author treeroot !oRN,m[7)p  
* @since 2006-2-2 $^e_4]k  
* @version 1.0 DjZTr}%q  
*/ f/kYm\Zc  
public class BubbleSort implements SortUtil.Sort{ 7k#>$sY+  
z {NK(oW  
/* (non-Javadoc) fP;I{AiN~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GAR6nJCz  
*/ Vw.4;Zy(  
public void sort(int[] data) { J1r\Cp+h0  
int temp; X)TZ  S  
for(int i=0;i for(int j=data.length-1;j>i;j--){ A|mE3q=  
if(data[j] SortUtil.swap(data,j,j-1); PJKxh%J  
} :-2sKD y  
} L]X Lv9J0  
} ]G! APE  
} 'oBv(H  
A6;[r #C  
} |jWA >S  
&` "uKO]  
选择排序: DfOig LG*  
:h0!giqoQ  
package org.rut.util.algorithm.support; Qc 1mR\.5  
% 5!Y#$:{o  
import org.rut.util.algorithm.SortUtil; : T4ap_Ycq  
p8CaD4bE  
/** 3=Xvl 58k  
* @author treeroot xnZ  
* @since 2006-2-2 EL *l5!Iu  
* @version 1.0 Nw1 .x  
*/ *z'Rl'j9[  
public class SelectionSort implements SortUtil.Sort { hz2f7g  
4l{La}Aj  
/* fhHTp_u)2  
* (non-Javadoc) P6'0:M@5  
* ~4S6c=:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) } f!wQx b  
*/ Kna@K$6{w=  
public void sort(int[] data) { \3t)7.:4  
int temp; AUU(fy#<  
for (int i = 0; i < data.length; i++) { b Sg]FBaW  
int lowIndex = i; &3~R-$P  
for (int j = data.length - 1; j > i; j--) { TU2MG VYy  
if (data[j] < data[lowIndex]) { Pi[(xD8  
lowIndex = j; M%eTNsbNm  
} lzz68cT  
} HM\}C.u  
SortUtil.swap(data,i,lowIndex); [}l 1`>  
} ?zXlLud8  
} .6i +_B|  
NC x)zJ\S  
} ^X*l&R_=R  
p!(]`N   
Shell排序: cPl$N5/5  
Kku@!lv  
package org.rut.util.algorithm.support; wD<W'K   
f./j%R@  
import org.rut.util.algorithm.SortUtil; m?)F@4]  
ns[h_g!j;  
/** *^%ohCU i  
* @author treeroot %G]WOq=q  
* @since 2006-2-2 P9#}aw+  
* @version 1.0 < $rXQ  
*/ J\ ?  
public class ShellSort implements SortUtil.Sort{ LC/%AbM  
.!1E7\  
/* (non-Javadoc)  %B#8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {<Vw55)#0Q  
*/ h`:gMhn  
public void sort(int[] data) { }4*~*NoQ  
for(int i=data.length/2;i>2;i/=2){ e({-. ra  
for(int j=0;j insertSort(data,j,i); _4t  
} k'd=|U;(FV  
} T!H }^v  
insertSort(data,0,1); 4V5h1/JPm  
} F)tcQO"G  
5lm>~J!/^  
/** qP[jtRIN  
* @param data L8KMMYh[  
* @param j (Mt-2+"+  
* @param i f@xjNm*'Z  
*/ &m@DK>  
private void insertSort(int[] data, int start, int inc) { v}"DW?  
int temp; DIc -"5~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); safI`b w1  
} gs=(h*  
} b U>.Bp]  
} 0a's[>-'A  
Dn.%+im-u  
} ca$K)=cDW  
A!`Q[%$  
快速排序: hQbz}x  
*h"7!g  
package org.rut.util.algorithm.support; bX&=*L+ h6  
jL#`CD  
import org.rut.util.algorithm.SortUtil; Bjsg!^X7  
\w@ "`!%  
/** (, uW-  
* @author treeroot >o!~T}J7  
* @since 2006-2-2 J?bx<$C@  
* @version 1.0 CF@j]I@{   
*/ s\ YHT.O?  
public class QuickSort implements SortUtil.Sort{ 'di(5  
/.[78:G\,  
/* (non-Javadoc) hW-?j&yJ?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e:RgCDWL  
*/ XRWy#Pj  
public void sort(int[] data) { A>J,Bi  
quickSort(data,0,data.length-1); a.s5>:Ct  
} 'u4TI=[6  
private void quickSort(int[] data,int i,int j){ .d%CD`8!  
int pivotIndex=(i+j)/2; @7,k0H9Moa  
file://swap rW0-XLbL5H  
SortUtil.swap(data,pivotIndex,j); |jTRIMj%,_  
: ]~G9]R`  
int k=partition(data,i-1,j,data[j]); ~myY-nEY  
SortUtil.swap(data,k,j); ^1,VvLA+  
if((k-i)>1) quickSort(data,i,k-1); HO9w"){d$  
if((j-k)>1) quickSort(data,k+1,j); c`_[q{(^m  
\zyvu7YA  
} IkJ-*vI6  
/** 2umgF  
* @param data 96S#Q*6+R  
* @param i S/7?6y~  
* @param j UB|}+WA3  
* @return nK9?|@S*'  
*/ o",J{  
private int partition(int[] data, int l, int r,int pivot) { _ "H&  
do{ y^hCO:`l3  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); p`06%"#  
SortUtil.swap(data,l,r); Lk1e{! a  
} v_e3ZA:%  
while(l SortUtil.swap(data,l,r); c^EU &q{4  
return l; F>s5<pKAX  
} Fhk`qh'i  
qO}Q4a+  
} 9._owKj  
 <]h?_)  
改进后的快速排序: &O.lIj#F R  
=2.q=a|'  
package org.rut.util.algorithm.support; [,/~*L;7  
^s?=$&8f![  
import org.rut.util.algorithm.SortUtil; )TzQ8YpO}  
6 ly`lu9  
/** R&]#@PW^  
* @author treeroot *32hIiCm  
* @since 2006-2-2 p5\B0G<m  
* @version 1.0 g.T:72"  
*/ swLrp 74  
public class ImprovedQuickSort implements SortUtil.Sort { 8XdgtYm  
S!+}\*  
private static int MAX_STACK_SIZE=4096; eNX!EN(^  
private static int THRESHOLD=10; 6_kv~`"tZ  
/* (non-Javadoc) :pvJpu$]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9B?-&t  
*/ .I nDyKt  
public void sort(int[] data) { _%:$sAj  
int[] stack=new int[MAX_STACK_SIZE]; M#;"7Qg  
` D={l29H  
int top=-1; b,uu dtlH  
int pivot; EN;s 8sC!  
int pivotIndex,l,r; =WM^i86  
5V@c~1\  
stack[++top]=0; 'j(F=9)  
stack[++top]=data.length-1; 'Uu!K!  
)4e?-?bK!  
while(top>0){ kBg8:bo~  
int j=stack[top--]; aGq1 YOD[$  
int i=stack[top--]; q1?}G5a ?  
:B  9>  
pivotIndex=(i+j)/2; Gqs)E"h  
pivot=data[pivotIndex]; Tqj:C8K{  
D,P{ ,/  
SortUtil.swap(data,pivotIndex,j); JK'FJ}Z4  
l~Rd\.O  
file://partition yr/G1?k%ML  
l=i-1; S^T ><C  
r=j; 7B{LRm6;Vu  
do{ d=d*:<Zx  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7oV$TAAf  
SortUtil.swap(data,l,r); P+bA>lJd  
} !!?TkVyEyM  
while(l SortUtil.swap(data,l,r); ~EtwX YkRZ  
SortUtil.swap(data,l,j); a|eHo%Qt  
VMIX=gTZ  
if((l-i)>THRESHOLD){ 7-#   
stack[++top]=i; #Ic)]0L  
stack[++top]=l-1; +o-jMvK9  
} o&ETs)n|  
if((j-l)>THRESHOLD){ +^|_vq^XR  
stack[++top]=l+1; w;;9YFBdM  
stack[++top]=j; #gsJ tT9  
} cPy/}A  
"."ow|  
} Oe ~g[I;  
file://new InsertSort().sort(data); xtO#reL"q?  
insertSort(data); }\0ei(%H  
} g+A>Bl3#  
/** O+OUcMa,  
* @param data ACOn}yH  
*/ gE: ?C2  
private void insertSort(int[] data) { v6P2v  
int temp; f9D01R fo  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =~_  
}  D9h  
} dVe,;?+A  
} Q>(a JF  
QtQbr*q@%  
} =}zSj64  
OXJ'-EZH  
归并排序: 0p]v#z}  
/]oQqZHv  
package org.rut.util.algorithm.support; e2^TQv2(=e  
%'OY  
import org.rut.util.algorithm.SortUtil; _Wqy,L;J  
;2P  
/** }`.d4mm  
* @author treeroot &EmG\vfE  
* @since 2006-2-2 {B-*w%}HU  
* @version 1.0 IGNU_w4j  
*/ ,&.$r/x|?  
public class MergeSort implements SortUtil.Sort{ >#VNA^+t  
LwYWgT\e  
/* (non-Javadoc)  :g~_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3 3zE5vr  
*/ h:RP/ 0E  
public void sort(int[] data) { }i{A4f `  
int[] temp=new int[data.length]; <*(^QOM  
mergeSort(data,temp,0,data.length-1); l];/,J^  
} 6n^@Ps  
RdBIbm  
private void mergeSort(int[] data,int[] temp,int l,int r){ u4j"U6"]M  
int mid=(l+r)/2; Y>6N2&Q  
if(l==r) return ; )2a)$qx;  
mergeSort(data,temp,l,mid); ]I_*+^?tI  
mergeSort(data,temp,mid+1,r); aW-6$=W  
for(int i=l;i<=r;i++){ Wdi`Z E  
temp=data; 0SDnMij&bf  
} # %EHcgF  
int i1=l; 4Cv*zn  
int i2=mid+1; (x fN=Te,-  
for(int cur=l;cur<=r;cur++){ ``%yVVg}  
if(i1==mid+1) .$@+ / @4  
data[cur]=temp[i2++]; 2VzYP~Jg  
else if(i2>r) >, [@SF%  
data[cur]=temp[i1++]; q=}1ud}1  
else if(temp[i1] data[cur]=temp[i1++]; DD2K>1A1  
else .+,U9e:%  
data[cur]=temp[i2++]; "9 f+F  
} "([/G?QAG  
} U*b7 Pxq;  
Z?xRSi2~7  
} IVY)pS"pR"  
@{W"mc+  
改进后的归并排序: R0%M9;>1  
AmC?qoEWQ7  
package org.rut.util.algorithm.support; zy5FO<->  
n*Uk<_WA  
import org.rut.util.algorithm.SortUtil; .G#li(NWH  
hD=.rDvO  
/** |c^?tR<  
* @author treeroot 1je j7p>K  
* @since 2006-2-2 `nKN|6o#x  
* @version 1.0 ^=5x1<a9$  
*/  +IO>%  
public class ImprovedMergeSort implements SortUtil.Sort { H8B$# .  
z:4_f:70  
private static final int THRESHOLD = 10; GC:q6}  
@$~IPg[J  
/* n}I?.r@e  
* (non-Javadoc) &gPP# D6A  
* &O^-,n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [q U v|l1  
*/ vxHFNGI  
public void sort(int[] data) { r! HXhl  
int[] temp=new int[data.length]; X =%8*_  
mergeSort(data,temp,0,data.length-1); 7f4O~4.[i  
} x x4GP2  
N#2ldY *  
private void mergeSort(int[] data, int[] temp, int l, int r) { GX0zirz  
int i, j, k; n}j6gN!O  
int mid = (l + r) / 2; 9! /kyyU  
if (l == r) a{.q/Tbt  
return; px "H  
if ((mid - l) >= THRESHOLD) X\/M(byn  
mergeSort(data, temp, l, mid); #-@u Lc  
else .p,VZ9  
insertSort(data, l, mid - l + 1); 6y~F'/ww  
if ((r - mid) > THRESHOLD) Rq%Kw > {&  
mergeSort(data, temp, mid + 1, r); Q2D!Agq=D  
else @0 /qP<E  
insertSort(data, mid + 1, r - mid); -sfv"?  
;}j(x;l>t  
for (i = l; i <= mid; i++) { w7o`B R  
temp = data; naW!b&:  
} >W;NMcN~  
for (j = 1; j <= r - mid; j++) { a5GLbanF  
temp[r - j + 1] = data[j + mid]; # )y/aA  
} [ r8 ZAS  
int a = temp[l]; U!`iKy-  
int b = temp[r]; B+snHabS6  
for (i = l, j = r, k = l; k <= r; k++) { !TJ,:c]4{!  
if (a < b) { C!a1.&HHZ7  
data[k] = temp[i++]; 9&5<ZC-D  
a = temp; ".tL+A[  
} else { Ff%V1BH[  
data[k] = temp[j--]; -X~mW  
b = temp[j]; Cf3!Ud  
} qS2Nk.e]o  
} Z sTtSM\Ac  
} dw3Hk$"h  
z8'1R6nq  
/** M{Z ;7n'  
* @param data m$kQbPlatN  
* @param l lOk8VlH<h  
* @param i 9MYk5q.X:  
*/ =y4dR#R(\  
private void insertSort(int[] data, int start, int len) { b1Kt SRLV  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *Bq}.Yn  
} s:Ml\['x  
} +7^p d9F.  
} XS[L-NHG  
} Ch_rV+  
8s@N NjV  
堆排序: b1.*cIv}  
w_xca(  
package org.rut.util.algorithm.support; ~DI$O[KpR%  
:Iv;%a0 -  
import org.rut.util.algorithm.SortUtil; ksOGCd^G7  
6JDHwV  
/** >w@+cUto  
* @author treeroot q8 ?kBKP  
* @since 2006-2-2 { K]5[bMT  
* @version 1.0 4=xi)qF/@  
*/ kkF)Tro\  
public class HeapSort implements SortUtil.Sort{ ]:59c{O  
^ RA'E@ "  
/* (non-Javadoc) hPDKxYD]f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~lys  
*/ X,7y|tb  
public void sort(int[] data) { 6!ve6ZB[p  
MaxHeap h=new MaxHeap(); KLg1(W(  
h.init(data); 3}0\W.jH  
for(int i=0;i h.remove(); 6'r8.~O  
System.arraycopy(h.queue,1,data,0,data.length); DPTk5o[  
} .$%p0Yx+  
,erf{"Nh  
private static class MaxHeap{ s9;6&{@%wO  
$(aq;DR  
void init(int[] data){ _1p8(n  
this.queue=new int[data.length+1]; 0N.h:21(4  
for(int i=0;i queue[++size]=data; !hBpon  
fixUp(size); jO-?t9^  
} @h%V:c  
} 4VWk/HK-!  
LH8jT  
private int size=0; RZm%4_p4s  
[@vz0!@s5  
private int[] queue; N Qk aW)  
GiV %Hcx  
public int get() { zTF{ g+  
return queue[1]; O?JJE8~']  
} NXU:b"G S  
V&M*,#(?  
public void remove() { 1cLtTE  
SortUtil.swap(queue,1,size--); d(T4Kd$r  
fixDown(1); {r,U ik-nL  
} wA=r ]BT  
file://fixdown ,#A(I#wL~  
private void fixDown(int k) { Ymk?@mV4  
int j; Gt9$hB7  
while ((j = k << 1) <= size) { 2 |s ohF  
if (j < size %26amp;%26amp; queue[j] j++; (^d7K:-'  
if (queue[k]>queue[j]) file://不用交换 Je1d|1!3  
break; bbK};u  
SortUtil.swap(queue,j,k); lLx!_h  
k = j; q@|+`>h  
} n/+X3JJ  
} /BL:"t@-  
private void fixUp(int k) { nT6y6F _e  
while (k > 1) { ,,'jyqD  
int j = k >> 1; H}^'  
if (queue[j]>queue[k]) <v_=k],W  
break; UN]gn>~j  
SortUtil.swap(queue,j,k); 8M,*w6P  
k = j; eqo0{e  
} !eLj + 0  
} ti\ ${C3  
1 em,/> "  
} za>UE,?h  
t]yxLl\  
} OXEk{#Uf[3  
Z2% HQL2  
SortUtil: zM9#1^X  
=)[m[@,c  
package org.rut.util.algorithm; =q4}(  
rFRcK>X\L  
import org.rut.util.algorithm.support.BubbleSort; > ;,S||  
import org.rut.util.algorithm.support.HeapSort; -/yqiC-yx  
import org.rut.util.algorithm.support.ImprovedMergeSort; %tCv-aX4  
import org.rut.util.algorithm.support.ImprovedQuickSort; RgJ@J/p"  
import org.rut.util.algorithm.support.InsertSort; Ys"wG B>  
import org.rut.util.algorithm.support.MergeSort; /{i~CGc ;"  
import org.rut.util.algorithm.support.QuickSort; _4ag-'5  
import org.rut.util.algorithm.support.SelectionSort; m>@hh#kBg  
import org.rut.util.algorithm.support.ShellSort; -aoYoJ '  
{Su?*M2y  
/** p4' .1.@  
* @author treeroot &`"DG$N(  
* @since 2006-2-2 $*yYmF  
* @version 1.0 *]6g-E?:@  
*/ o.+;]i}D  
public class SortUtil { Dp@XAyiA[  
public final static int INSERT = 1; ~ZHjP_5Q  
public final static int BUBBLE = 2; PobX;Z  
public final static int SELECTION = 3; gq+SM  i=  
public final static int SHELL = 4; 1K72}Gj)ZL  
public final static int QUICK = 5; @IT[-d  
public final static int IMPROVED_QUICK = 6; bjZJP\6  
public final static int MERGE = 7; {keZ_2  
public final static int IMPROVED_MERGE = 8; a~$XD(w^  
public final static int HEAP = 9; Z*,e<zNQ  
i]JTKL{\q  
public static void sort(int[] data) { ~f/|bcep  
sort(data, IMPROVED_QUICK); D!<F^mtl  
} [BWq9uE  
private static String[] name={ L.Y3/H_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `KJ( .m  
}; ZoW1Cc&p  
VF%QM;I[Rc  
private static Sort[] impl=new Sort[]{ B=_w9iVN  
new InsertSort(), :ym?]EL4o  
new BubbleSort(), pu-HEv}]a|  
new SelectionSort(), wq)*bIv  
new ShellSort(), {15j'Qwm  
new QuickSort(), 7- B.<$uC  
new ImprovedQuickSort(), o3J#hQrl  
new MergeSort(), H;Wrcf2  
new ImprovedMergeSort(), O[@!1SKT0  
new HeapSort() 3]Z1kB  
};  N5 ME_)  
Ltlp9 S  
public static String toString(int algorithm){ w:&" "'E  
return name[algorithm-1]; 2M %j-yG"  
} W5*ldXXk  
5{ c;I<0  
public static void sort(int[] data, int algorithm) { %xt9k9=vZ  
impl[algorithm-1].sort(data); X Xque-  
} dkQ4D2W*\  
(jc@8@Wo.  
public static interface Sort { <2$vo  
public void sort(int[] data); j\2Qe %d  
} ?OD$`{1  
GO"`{|o  
public static void swap(int[] data, int i, int j) { > p`,  
int temp = data; mH o#"tc  
data = data[j]; ,7{|90'V<  
data[j] = temp; ~q$]iwwqT  
} [FFr}\}bY  
} x/|W;8g4  
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3+5=?,请输入中文答案:八 正确答案:八