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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。 >3_jWFq  
插入排序: ,':fu  
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package org.rut.util.algorithm.support; Ql/cN%^j$  
3!XjtVhK?I  
import org.rut.util.algorithm.SortUtil; ORe(]I`Z  
/** /uPcXq:L~  
* @author treeroot ?Y-%'J(  
* @since 2006-2-2 uwzvbgup?  
* @version 1.0 [$0p+1  
*/ g!@<n1 L  
public class InsertSort implements SortUtil.Sort{ %7zuQ \w  
qE&v ;  
/* (non-Javadoc) S?1AFI9{   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .7e2YI,S  
*/ 4|buk]9  
public void sort(int[] data) { ^t` k0<  
int temp; 0b+Wc43}K  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K2M~-S3  
} g7}Gip}.>  
} ~ {E'@MU  
} R "n 5  
}Lc-7[/  
} @mOH"acGn?  
K0-ypU*P  
冒泡排序: GPkmf%FJ  
diJLZikk  
package org.rut.util.algorithm.support; -G}[AkmS  
qaiNz S@q  
import org.rut.util.algorithm.SortUtil; Yw4n-0g  
kpJ@M%46  
/** =5J7Hw&K  
* @author treeroot )WRLBFi3  
* @since 2006-2-2 ah+~y,Gl  
* @version 1.0 f sJ9bQm/  
*/ En~5"yW5>]  
public class BubbleSort implements SortUtil.Sort{ 3LAIl913  
pWy=W&0~qf  
/* (non-Javadoc) ![`Ay4AZ@a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `IP/d  
*/ v*'^r)Q[p  
public void sort(int[] data) { >6NRi/[  
int temp; OVm\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ *@Lp`thq  
if(data[j] SortUtil.swap(data,j,j-1); "S8uoSF`>  
}  .u*0[N  
} ]JCvyz H  
} sF|5XjQ  
} &M46&^Jho  
(KFCs^x7wG  
} (61EDKNd9  
-8; 7Sp1  
选择排序: 6g 5#TpCh  
T=iJGRctB  
package org.rut.util.algorithm.support; J2::'Hw*s  
>pU$wq|i  
import org.rut.util.algorithm.SortUtil; d:#yEC  
T ? $:'XJ  
/** s8ywKTR-  
* @author treeroot cv?06x{  
* @since 2006-2-2 R9'b-5q  
* @version 1.0 K?[q% W]%  
*/ 5"CZh.J  
public class SelectionSort implements SortUtil.Sort { rX4j*u2u  
5>CEl2mSl  
/* m+b):  
* (non-Javadoc) @Fluc,Il  
* % W=b? :  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ruc++@ J@  
*/ ?j40} B]]d  
public void sort(int[] data) { NL!u<6y  
int temp; @aAW*D~-J  
for (int i = 0; i < data.length; i++) { v>$'iT~l  
int lowIndex = i; !B\R''J5  
for (int j = data.length - 1; j > i; j--) { W~zbm]  
if (data[j] < data[lowIndex]) { 19HM])Zw\  
lowIndex = j; N9jH\0nG  
} UELy"z R  
} G!"YpYml  
SortUtil.swap(data,i,lowIndex); S& S Q  
} _oHNkKQ  
} Gcdd3W`O  
byLft 1  
} ePr&!Tz#  
/LvRP yj@  
Shell排序: $* AYcy7  
eZSNNgD<:  
package org.rut.util.algorithm.support; 5 MN8D COF  
P+s !|7'  
import org.rut.util.algorithm.SortUtil; J&M o%"[)  
"Q!(52_@J  
/** ?98("T|y;  
* @author treeroot p^Ak1qm~e  
* @since 2006-2-2 jF0jkj1&/[  
* @version 1.0 <J`0mVOX  
*/ iH/6M  
public class ShellSort implements SortUtil.Sort{ JBXrFC;  
5_- (<B  
/* (non-Javadoc) ;5zz<;Zy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ove<mFI\  
*/ fz\9 S  
public void sort(int[] data) { YE|SKx@  
for(int i=data.length/2;i>2;i/=2){ vgsJeV`}I  
for(int j=0;j insertSort(data,j,i); ~R22?g.  
} KVT-P};jy*  
} VHCK2}ps  
insertSort(data,0,1); KVn []@#  
} Y0x%sz 5  
OR%'K2C6S  
/** .#rJ+.2  
* @param data BQ=PW|[  
* @param j -=~| ."O  
* @param i .}OR  
*/ q(`/Vo4g(  
private void insertSort(int[] data, int start, int inc) { ;_rF;9z9  
int temp; {so `/EWa  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %Z):>'  
} l|kSsP:GO  
} ~]nSSD)\  
} 555XCWyrC  
n 2)@S0{  
} nQ5n-A&["  
R)QC)U  
快速排序: gP0LCK>  
- `p4-J!Fy  
package org.rut.util.algorithm.support; 9%B\/&f  
G/7cK\^u  
import org.rut.util.algorithm.SortUtil; 5@+,Xh,H|t  
3HcQ(+Z  
/** P_*" dza  
* @author treeroot 3E!|<q$ z  
* @since 2006-2-2 *7ZN]/VRT  
* @version 1.0 K`u(/kz/<  
*/ Y8-86 *zC  
public class QuickSort implements SortUtil.Sort{ TU:7Df  
5N/%v&1  
/* (non-Javadoc) 3|'>`!hb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `$W_R[  
*/ M$/|)U'W  
public void sort(int[] data) { Gn ~6X-l  
quickSort(data,0,data.length-1); 'VzP};  
} kBD>-5Sn_T  
private void quickSort(int[] data,int i,int j){ inh=WUEW  
int pivotIndex=(i+j)/2; d@XV:ae  
file://swap M%2+y5  
SortUtil.swap(data,pivotIndex,j); #xX5,r0  
-* WXMzr  
int k=partition(data,i-1,j,data[j]); 925|bX6I  
SortUtil.swap(data,k,j); n1ly y0%u  
if((k-i)>1) quickSort(data,i,k-1); BG6B :  
if((j-k)>1) quickSort(data,k+1,j); ]:Ns f|C0  
mlJ!:WG  
} GO` Ru 8  
/** }o(zj=7  
* @param data wt!nMQ  
* @param i yku5SEJ\  
* @param j e4HA7=z  
* @return '98VYCL  
*/ G6/p1xy>o:  
private int partition(int[] data, int l, int r,int pivot) { {`LU+  
do{ IsZHe lg  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :N4t49i  
SortUtil.swap(data,l,r); 9Uj $K>:  
} x[h^[oF0  
while(l SortUtil.swap(data,l,r); ]x RM&=)<  
return l; &7PG.Ff!r  
} Fl kcU `j  
Q=AavKn#  
} )Im#dVQs=  
i BF|&h(\  
改进后的快速排序: Gft%Mq v  
mZSD(  
package org.rut.util.algorithm.support; q8/MMKCbX  
NdMb)l)m  
import org.rut.util.algorithm.SortUtil; }uJu>'1[G  
_F>CBG  
/** _P0T)-X\(  
* @author treeroot }4 )H   
* @since 2006-2-2 ar__ Pf6r  
* @version 1.0 Fq |Ni$  
*/ uJzG|$;  
public class ImprovedQuickSort implements SortUtil.Sort { Z/k:~%|E  
mq@6Q\Z+  
private static int MAX_STACK_SIZE=4096; WI-&x '  
private static int THRESHOLD=10; ZrPbl "`7  
/* (non-Javadoc) em,u(#)&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \-h%O jf4  
*/ W>) M5t4i  
public void sort(int[] data) { &"yx<&c}  
int[] stack=new int[MAX_STACK_SIZE]; L2\#w<d  
0 ?s|i :  
int top=-1; ?9e_gV{&;  
int pivot; -ws? "_w  
int pivotIndex,l,r; 3{'Ne}5%I  
Q6PHpaj  
stack[++top]=0; \pPY37l  
stack[++top]=data.length-1; &dqLP9 5  
0)Uce=t`  
while(top>0){ C 3^JAP  
int j=stack[top--]; wH>a~C:  
int i=stack[top--]; ~xkeuU  
QoI3>Oj=  
pivotIndex=(i+j)/2; u(@$a4z  
pivot=data[pivotIndex]; wxKX{Bs  
arIf'CG6  
SortUtil.swap(data,pivotIndex,j); KaPAa:Q  
a zCf  
file://partition ;rF\kX&Jh  
l=i-1; q ?|,O;?  
r=j; )#?"Gjf~  
do{ 94h]~GqNi  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cr%"$1sY;  
SortUtil.swap(data,l,r); Bal$+S  
} s2h@~y  
while(l SortUtil.swap(data,l,r); i6^twK)j  
SortUtil.swap(data,l,j); wo4;n9@I  
N-G1h?e4  
if((l-i)>THRESHOLD){ *:Y%HAy*  
stack[++top]=i; V3&RJ k=b  
stack[++top]=l-1; 1Ir21un  
} ^X=ar TE  
if((j-l)>THRESHOLD){ ,c;Kzp>e  
stack[++top]=l+1; H=<S 9M  
stack[++top]=j; K*%9)hq  
} *w|:~g  
~5NXd)2+Ks  
} G? ])o5  
file://new InsertSort().sort(data); o*-)Tq8GHE  
insertSort(data); C uFSeRe  
} CNih6R  
/** B-xGX$<z  
* @param data !=pn77`g >  
*/ }u\])I3  
private void insertSort(int[] data) { T/b6f;t-s  
int temp; .8@$\ZRP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vq0Vq(V=  
} gR&Q3jlIV  
} aT{_0m$G10  
} MDnKX?Y  
-f3p U:G8  
} u8'Zl8 g  
S'k_olx7  
归并排序: HguT"%iv  
/$ w%Q-p  
package org.rut.util.algorithm.support; y0Fb_"}  
0g +7uGp:  
import org.rut.util.algorithm.SortUtil; {Bk[rCl  
\RNNg  
/** !`k1:@NZ  
* @author treeroot 4-? C>  
* @since 2006-2-2 aI%g2 q0f  
* @version 1.0 2L:_rR#w  
*/ KxI&G%z  
public class MergeSort implements SortUtil.Sort{ &4{KV.  
sr r :!5  
/* (non-Javadoc) F5LuSy+v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Umz KY  
*/ yg `j-9[8  
public void sort(int[] data) { -Y1e8H ='  
int[] temp=new int[data.length]; %oF}HF.  
mergeSort(data,temp,0,data.length-1); Sj-n;F|=X  
} Hn7_FOC  
HD@$t)mn  
private void mergeSort(int[] data,int[] temp,int l,int r){ b[sx_b  
int mid=(l+r)/2; J; 3{3  
if(l==r) return ; &x=.$76  
mergeSort(data,temp,l,mid); LSm$dK  
mergeSort(data,temp,mid+1,r); l\E%+?K+^  
for(int i=l;i<=r;i++){ e h&IPU S  
temp=data; 10G}{  
} rK@8/?y5  
int i1=l; x5|I  
int i2=mid+1; ;PF`Wj  
for(int cur=l;cur<=r;cur++){ q YC;cKv  
if(i1==mid+1) >Y&N8PHD  
data[cur]=temp[i2++]; 6 +Sxr  
else if(i2>r) GSY(  
data[cur]=temp[i1++]; N@;?CKU  
else if(temp[i1] data[cur]=temp[i1++]; =4vy@7/  
else heltgRt  
data[cur]=temp[i2++]; ~< P 0]ju  
} qsF<!'m7`  
} o=u3&liBi  
G !<Z.]  
} PUz*!9HC  
/Y*WBTV'  
改进后的归并排序: D_?K"E=fw  
];}Wfl  
package org.rut.util.algorithm.support; .v]IJfRH*  
'QG xd!4  
import org.rut.util.algorithm.SortUtil; x9NEFtqjm  
y6@0O%TDN  
/** h~A/y!s  
* @author treeroot ylUb9KusOx  
* @since 2006-2-2 rjl`&POqc  
* @version 1.0 MtM%{=&_  
*/ 'z );  
public class ImprovedMergeSort implements SortUtil.Sort { 2;xIL]  
OHv[#xGuV?  
private static final int THRESHOLD = 10; Pl(Q,e7O]  
z _g~  
/* 909?_ v  
* (non-Javadoc) c@YI;HS_g  
* y@]_+2Vo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6L:x^bM  
*/ zFfoqb#*g  
public void sort(int[] data) { s.EI`*xylY  
int[] temp=new int[data.length]; U6=..K!q  
mergeSort(data,temp,0,data.length-1); kTKq/G,Ft  
} }{M#EP8q+  
eeIhed9  
private void mergeSort(int[] data, int[] temp, int l, int r) { U2$d%8G  
int i, j, k; \ Fl+\?~D  
int mid = (l + r) / 2; 6Vww;1 J  
if (l == r) :d3bt~b'  
return; EQ2#/>  
if ((mid - l) >= THRESHOLD) 3WN`y8l  
mergeSort(data, temp, l, mid); _a_7,bk5  
else 4B=2>k  
insertSort(data, l, mid - l + 1); Yj%U >),8  
if ((r - mid) > THRESHOLD) EJ@?h(O  
mergeSort(data, temp, mid + 1, r); lT4Hn;tnN  
else ygOd69  
insertSort(data, mid + 1, r - mid); d#6`&MR  
AoY -\E  
for (i = l; i <= mid; i++) { `))\}C@k  
temp = data; ! N|0x`  
} .id)VF-l  
for (j = 1; j <= r - mid; j++) { t'9*R7=  
temp[r - j + 1] = data[j + mid]; ]e >RK'  
} >tTj[cMJl  
int a = temp[l]; Tskq)NU  
int b = temp[r]; VQY&g;[d  
for (i = l, j = r, k = l; k <= r; k++) { CQwL|$)]Y  
if (a < b) { Zkx[[gzL  
data[k] = temp[i++]; |\_^ B  
a = temp; OF%B[h&   
} else { )=\# UE+W  
data[k] = temp[j--]; x??pBhJH  
b = temp[j]; +${D  
} Wf>zDW^"R  
} Sa\!*e_sN  
} :*t"8;O[  
yvgrIdEP  
/** ;WgJ<&33  
* @param data i.=w]S j  
* @param l z?>D_NLX6  
* @param i @lCJ G!u  
*/ 76>7=#m0u'  
private void insertSort(int[] data, int start, int len) { V<D.sd<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); wtmB+:I  
} U`,0]"Qk  
} $p#%G#T  
} ^F2b hXE  
} I+Jm>XN  
)>b.;  
堆排序: >RPd$('T  
7a#4tqM#  
package org.rut.util.algorithm.support; ZeUvyIG  
$"dR SysB  
import org.rut.util.algorithm.SortUtil; 1^ _U;O:I  
w$H^q !(  
/** b3S.-W{p.  
* @author treeroot rSxxH]-  
* @since 2006-2-2 F.-R r  
* @version 1.0 g8Q5m=O*  
*/ ebS0qo[oLH  
public class HeapSort implements SortUtil.Sort{ ix W@7m  
-od!J\ KCy  
/* (non-Javadoc) [01.\eh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TT50(_8  
*/ &LF` W  
public void sort(int[] data) { chV9_(8  
MaxHeap h=new MaxHeap(); T<JwD[ (  
h.init(data); U7!.,kR-  
for(int i=0;i h.remove(); vo\fUT@k  
System.arraycopy(h.queue,1,data,0,data.length); Vw#_68EybM  
} /" ${$b{  
b !%hH  
private static class MaxHeap{ ME;n^y\8  
Q:|l`*.R  
void init(int[] data){ GuGOePV  
this.queue=new int[data.length+1]; 28/ ADZ  
for(int i=0;i queue[++size]=data; lc2i`MC  
fixUp(size); JYrY[',u  
} ZDD..j  
} PqyA1  
A a= u+  
private int size=0; !/^-;o7  
Aub]IO~  
private int[] queue; UOGuqV-  
6`0mta Q  
public int get() { /,MJq#@K  
return queue[1]; DUL4noq{  
} %&->%U|'  
`6[I^qG".  
public void remove() { S#-wl2z  
SortUtil.swap(queue,1,size--); ?Zc"C  
fixDown(1); :Gu+m  
}  QV h4  
file://fixdown i]=&  
private void fixDown(int k) { xXY.AoO6  
int j; (]RM6i7  
while ((j = k << 1) <= size) { &-czStQ  
if (j < size %26amp;%26amp; queue[j] j++; U9&k;`  
if (queue[k]>queue[j]) file://不用交换 A%Xt|=^_  
break; RrhT'':[  
SortUtil.swap(queue,j,k); op"$E1+  
k = j; h'i{&mS_b  
} ]l@ qra  
} iweD @b  
private void fixUp(int k) { T1` |~Z?g-  
while (k > 1) { { F'Kk\f%:  
int j = k >> 1; ]Ni;w]KE  
if (queue[j]>queue[k]) c(U  
break; F$Ca;cP"  
SortUtil.swap(queue,j,k); -UZ@G~K  
k = j; ;uqx@sx ;  
} uK ("<u|  
} F( Ak  
B-*E:O0y  
} WKpA|  
dl5=q\1=  
} >tG+?Y'{  
uNHdpni  
SortUtil: z305{B:Y  
=39 ?:VoD  
package org.rut.util.algorithm; iB1i/l  
/<&h@$NHH4  
import org.rut.util.algorithm.support.BubbleSort; x1gx$P  
import org.rut.util.algorithm.support.HeapSort; `_5GG3@Ff  
import org.rut.util.algorithm.support.ImprovedMergeSort; J9%@VZut  
import org.rut.util.algorithm.support.ImprovedQuickSort; 3Db3xN  
import org.rut.util.algorithm.support.InsertSort; a=xT(G0Re  
import org.rut.util.algorithm.support.MergeSort; #.5vC5  
import org.rut.util.algorithm.support.QuickSort; xM s]Hs  
import org.rut.util.algorithm.support.SelectionSort; s$DrR  
import org.rut.util.algorithm.support.ShellSort; B|%tE{F  
1ndJ+H0H  
/** p T[gdhc  
* @author treeroot 4'Xgk8)  
* @since 2006-2-2 `@`1pOb  
* @version 1.0 /}5B&TZ=(3  
*/ .5> 20\b2  
public class SortUtil { b-@\R\T  
public final static int INSERT = 1; cPn+<M#  
public final static int BUBBLE = 2; YCy22@C  
public final static int SELECTION = 3; !EF(*~r!9L  
public final static int SHELL = 4; d"~(T:=r  
public final static int QUICK = 5; C+K=[   
public final static int IMPROVED_QUICK = 6; ~2uh'e3  
public final static int MERGE = 7; 9l+{OA  
public final static int IMPROVED_MERGE = 8; ~^N]y b  
public final static int HEAP = 9; wH"kk4^  
Q;h3v1GC\P  
public static void sort(int[] data) { :Gh~fm3}  
sort(data, IMPROVED_QUICK); C:\(~D *GS  
} :a3LS|W  
private static String[] name={ uD>z@J-v  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vt]F U<  
}; ^m7~:=K7WG  
Vm8D"I5i  
private static Sort[] impl=new Sort[]{ h3Fo-]0  
new InsertSort(), MonS hIz  
new BubbleSort(), S7n"3.k  
new SelectionSort(), ^[-> )  
new ShellSort(), <%bw/  
new QuickSort(), `Y3(~~YGn  
new ImprovedQuickSort(), BIWD/ |LQ  
new MergeSort(), `1p 8C%  
new ImprovedMergeSort(), fk5XvL  
new HeapSort() K5ZnS`c;  
}; D\]&8w6&  
C|z%P}u#p  
public static String toString(int algorithm){ K5 vNhA  
return name[algorithm-1]; :%_q[}e  
} R]b! $6Lt  
&v# `t~  
public static void sort(int[] data, int algorithm) { T!( 4QRh[  
impl[algorithm-1].sort(data); }. %s xw  
} BpT"~4oV5  
gOE_ ]  
public static interface Sort { rveVCTbC  
public void sort(int[] data); !p% @Deu  
} Y"> 4Qx4W  
Uu2N9.5  
public static void swap(int[] data, int i, int j) { k\(4sY M  
int temp = data; |Is'-g!  
data = data[j]; aR(E7mXQ  
data[j] = temp; _Y YP4lEL  
} Xu<FDjr  
} ABWb>EZ8  
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