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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。 HYNpvK  
插入排序: k~JTQh*,w  
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package org.rut.util.algorithm.support; LVy (O9g  
2l~qzT-  
import org.rut.util.algorithm.SortUtil; pQ8f$I#v  
/** 31p7oRzr  
* @author treeroot g c<Y?a-  
* @since 2006-2-2 "rpP  
* @version 1.0 3RI %OCGF  
*/ ~6[3Km|2  
public class InsertSort implements SortUtil.Sort{ qGzF@p(p8  
]oKHS$W9  
/* (non-Javadoc) {Ut,xi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V}h)e3X  
*/ $wk(4W8E  
public void sort(int[] data) { R l)g[s  
int temp; Zb+n\sv4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IYhn*  
} ^[q/w<_j~  
} NFf?~I&mfu  
} Uu|R]azbO  
rt\.|Hr4s  
} P+rDln {  
c >xHaA:V  
冒泡排序: BD mF+  
P[H 4Yp  
package org.rut.util.algorithm.support; 4u1au1c  
BD M"";u  
import org.rut.util.algorithm.SortUtil; F*y7 4j,  
I0_>ryA  
/** Qn@[{%),4  
* @author treeroot Yr>7c1FZi  
* @since 2006-2-2 WH. 3  
* @version 1.0 fhro"5/4  
*/ O/oLQoH  
public class BubbleSort implements SortUtil.Sort{ 161IWos  
QL-E4]   
/* (non-Javadoc) ^,Ft7JAn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :7s2M  
*/ B06W(y,3Q>  
public void sort(int[] data) { cfHtUv  
int temp; VzWH9%w  
for(int i=0;i for(int j=data.length-1;j>i;j--){ '.7ER  
if(data[j] SortUtil.swap(data,j,j-1); W'v o?  
} -LlS9[r0  
} 1gX$U00:  
} :79u2wSh  
} ]'0}fuV  
?p>m ;Aq  
} "lB%"}  
z#d*Odc  
选择排序: -s 7a\H{~  
zTw<9Nf  
package org.rut.util.algorithm.support; .Z@iz5  
@ b} -<~  
import org.rut.util.algorithm.SortUtil; gdg "g6b  
p }3$7CR/  
/** R^yh,  
* @author treeroot 43!E>mq  
* @since 2006-2-2 R vd'uIJ  
* @version 1.0 (:RYd6i  
*/ L!Gpk)}[i  
public class SelectionSort implements SortUtil.Sort { nlc$"(eA[H  
^a7a_M  
/* {-hu""x>  
* (non-Javadoc) 5GURfG3{  
* ~8)l/I=`);  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I-W ,C &J>  
*/ p R ! m  
public void sort(int[] data) { |Pv)&'B"  
int temp; j$P`/-N  
for (int i = 0; i < data.length; i++) { $@~s O0q  
int lowIndex = i; z#6(PZC}  
for (int j = data.length - 1; j > i; j--) { ,]tMZ?n8  
if (data[j] < data[lowIndex]) { =RHIB1  
lowIndex = j; l(8@?t^;  
} Xj<xen(  
} 4@M`BH`  
SortUtil.swap(data,i,lowIndex); JcC2Zn6  
} 7MhaLkB_6  
} a._>?rVy  
vJ>o9:(6  
} &_'3(xIO  
~e686L0j  
Shell排序: EU'P U  
3.h0  
package org.rut.util.algorithm.support; m~gcc  
X#ud_+6x  
import org.rut.util.algorithm.SortUtil; oKPG0iM:  
@u:q#b  
/** ~bgM*4GW  
* @author treeroot 6|1*gl1_LD  
* @since 2006-2-2 4p>,  
* @version 1.0 Tzfk_h3hE  
*/ -(zw80@&  
public class ShellSort implements SortUtil.Sort{ i({MID)/_  
^$y`Q@-9  
/* (non-Javadoc) P9M%B2DQ6f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *,,:;F^  
*/ +9.GNu  
public void sort(int[] data) { }-p-(  
for(int i=data.length/2;i>2;i/=2){ #r@>.S=U]  
for(int j=0;j insertSort(data,j,i); .i1|U8"X  
} J$S*QCo  
} Qa"4^s  
insertSort(data,0,1); "J 2v8c  
} & z5:v-G?  
}&^1")2t  
/** pbG v\S F  
* @param data tQ)l4Y 8  
* @param j >KJE *X@s  
* @param i w NMA)S  
*/ so A] f  
private void insertSort(int[] data, int start, int inc) { zG<>-?q~'  
int temp; b6@0?_n  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %z-n2%  
} w=[ITQ|W%  
} {&nDm$KTD  
} QM{B(zH  
(w Q,($@  
} ^j2z\yo  
H:mcex  
快速排序: Li\b ,_C  
jOL=vG  
package org.rut.util.algorithm.support; lN_b&92  
gj82qy\:  
import org.rut.util.algorithm.SortUtil; 0RN7hpf&`  
J5}?<Dd:  
/** Z*.rv t  
* @author treeroot Q>TNzh  
* @since 2006-2-2 jV#1d8qm  
* @version 1.0 WPPD vB  
*/ /`7G7pQ+  
public class QuickSort implements SortUtil.Sort{ M%5_~g2n'\  
M[L@ej  
/* (non-Javadoc) 8]WcW/1r !  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s 4n<k]d  
*/ i1!Y {  
public void sort(int[] data) { 6df`]s c  
quickSort(data,0,data.length-1); o}yA{<"  
} |oR#j `  
private void quickSort(int[] data,int i,int j){ vhN6_XD  
int pivotIndex=(i+j)/2; bUc ++M  
file://swap hPt=j{aJ%<  
SortUtil.swap(data,pivotIndex,j); ^CB@4$!   
PrF('PH7i  
int k=partition(data,i-1,j,data[j]); ucUu hS5  
SortUtil.swap(data,k,j); #_zj5B38E  
if((k-i)>1) quickSort(data,i,k-1); jIWX6  
if((j-k)>1) quickSort(data,k+1,j); T;3B_ lu]  
0&c<1;  
} Rd|^C$6  
/** J$ &2GAi  
* @param data rWJKK  
* @param i 9/O\769"'  
* @param j m [BV{25  
* @return \mw5 ~Rf;  
*/ >dwY( a  
private int partition(int[] data, int l, int r,int pivot) { Hh%|}*f_,  
do{ 'i 8`LPQ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); pMkM@OH  
SortUtil.swap(data,l,r); *\^(-p~M  
} |C7=$DgwY  
while(l SortUtil.swap(data,l,r); q[c^`5  
return l; F`o"t]AD-a  
} unyU|B  
\3 O1o#=(  
} ,N8SP 'R  
N^jr  
改进后的快速排序: ;B;wU.Y"  
?*cCn-|  
package org.rut.util.algorithm.support; ~_ko$(;A  
&& WEBQ  
import org.rut.util.algorithm.SortUtil; r`PD}6\  
+SkfT4*U  
/** ePTxuCf>  
* @author treeroot >vNE3S_  
* @since 2006-2-2 8[oZ>7LMzC  
* @version 1.0 !)FKF7'  
*/ J$,bsMIX  
public class ImprovedQuickSort implements SortUtil.Sort { ]MB6++.e  
J n'SGR  
private static int MAX_STACK_SIZE=4096; u`u{\ xN9  
private static int THRESHOLD=10; zn5|ewl@"  
/* (non-Javadoc) hdYd2 j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YH&0Vy#c$  
*/ VRUA<x  
public void sort(int[] data) { 3u9}z+q  
int[] stack=new int[MAX_STACK_SIZE]; l)Mi?B~N  
Oo9'  
int top=-1; l$C Y gm  
int pivot; *Q;?p hr  
int pivotIndex,l,r; Y\E7nll:.  
~FnY'F<35  
stack[++top]=0; ;V84Dy#b  
stack[++top]=data.length-1; e,l-}=5* P  
@[]#[7  
while(top>0){ 2FEi-m}  
int j=stack[top--]; Oki{)Ssy  
int i=stack[top--]; 1}OM"V  
"FLiSz%ME  
pivotIndex=(i+j)/2; &PFK0tY  
pivot=data[pivotIndex]; _[N*k"  
Y$W)JWMY`  
SortUtil.swap(data,pivotIndex,j); [!`5kI  
{}BAQ9|q  
file://partition S4 s#EDs  
l=i-1; </_.+c [  
r=j; |q Pu*vR  
do{ 2 e&M/{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); eCG{KCM~_Z  
SortUtil.swap(data,l,r); mnU8i=v0 A  
} a&B@F]+  
while(l SortUtil.swap(data,l,r); '>t'U?7w<  
SortUtil.swap(data,l,j); $rPQ%2eF4  
9yj'->dL  
if((l-i)>THRESHOLD){ wM! dz&  
stack[++top]=i; NBA`@K~4  
stack[++top]=l-1; Kr+#)S  
} )oZ2,]us!  
if((j-l)>THRESHOLD){ ?B<.d8i  
stack[++top]=l+1; Myh?=:1~(c  
stack[++top]=j; f\H1$q\p\  
} -f"{%<Q  
/?*ut&hwv  
} ix5<h }  
file://new InsertSort().sort(data); Twk<<  
insertSort(data); Ka$lNL3<j  
} s $ ?;C  
/** 40 zO4  
* @param data mcxD#+H 3  
*/ xggF:El3{  
private void insertSort(int[] data) { \9]- (j6[H  
int temp; imyfki $B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  Au*1-  
} c~!ETwpHQ  
} .>Fpk7  
} %{0F.  
'Qg.D88  
} 8( bK\-b  
dEam|  
归并排序: sk@aOv'*(  
d"thM  
package org.rut.util.algorithm.support; 4K,S5^`Gx  
m,ur{B8 :  
import org.rut.util.algorithm.SortUtil; M%7|7V<o)^  
AsI.8"  
/** JI /iq  
* @author treeroot :)%cL8Nz]$  
* @since 2006-2-2 x\YVB',h  
* @version 1.0 <Ik5S1<h$H  
*/ #It!D5A  
public class MergeSort implements SortUtil.Sort{ lLI%J>b@  
6sT( t8[  
/* (non-Javadoc) gwFW+*h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6xu%M&ht  
*/ n D}<zj$D2  
public void sort(int[] data) { !wKiMgLS  
int[] temp=new int[data.length]; h7AO5"6  
mergeSort(data,temp,0,data.length-1); 18]Q4s8E  
} W3n[qVZIC  
<]*Jhnx/  
private void mergeSort(int[] data,int[] temp,int l,int r){ \8USFN~(Y  
int mid=(l+r)/2; nPH\Lra  
if(l==r) return ; $9Gra#  
mergeSort(data,temp,l,mid); !(y(6u#  
mergeSort(data,temp,mid+1,r); Bf" ZmG9  
for(int i=l;i<=r;i++){ gl!ht@;>ak  
temp=data; {~#d_!(  
} =nlj|S ~3  
int i1=l; ^cuH\&&7  
int i2=mid+1; Uh'W d_?  
for(int cur=l;cur<=r;cur++){ >2NsBS(  
if(i1==mid+1) Fzz9BEw(i  
data[cur]=temp[i2++]; /bmkt@$-0  
else if(i2>r) xM/WS':V  
data[cur]=temp[i1++]; Y@+9Ukd/  
else if(temp[i1] data[cur]=temp[i1++]; [YJ*zO  
else OXZx!h  
data[cur]=temp[i2++]; ScRK1  
} boZ/*+t  
} ;HiaX<O!  
-?Cu-'  
} P@Vs\wAT  
}TDq7-(g  
改进后的归并排序: _B\87e  
U\>k>|Jr{  
package org.rut.util.algorithm.support; ".?y!VY  
\U'*B}Sz  
import org.rut.util.algorithm.SortUtil; C}\kp0mz  
6` 3kNk;  
/** _:JV-lM  
* @author treeroot [5Zi\'~UH)  
* @since 2006-2-2  nWUau:%  
* @version 1.0 epcvwM/A  
*/ muO;g&  
public class ImprovedMergeSort implements SortUtil.Sort { ^tVIPH.R  
?28)l 4 Ml  
private static final int THRESHOLD = 10; In*0.   
{fMo#`9=  
/* =.,XJIw&  
* (non-Javadoc) :)Da^V  
* @Y#TWt#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :^]Fp UY  
*/ ^b*ub(5Ot  
public void sort(int[] data) { am/D$ (l1  
int[] temp=new int[data.length]; xFyBF[c  
mergeSort(data,temp,0,data.length-1); eGo$F2C6E  
} 4ZB]n,pfT  
f?"909&  
private void mergeSort(int[] data, int[] temp, int l, int r) { H-8_&E?6m  
int i, j, k; ][~rk?YY  
int mid = (l + r) / 2; |^#Z!Hp_Y  
if (l == r)  5e2yJ R  
return; d!"gb,ec  
if ((mid - l) >= THRESHOLD) mOb@w/f  
mergeSort(data, temp, l, mid); /}s#   
else ?:W=ddg  
insertSort(data, l, mid - l + 1); d%oHcn  
if ((r - mid) > THRESHOLD) (>dL  
mergeSort(data, temp, mid + 1, r); 2gnz=  
else Vb?_RE_H  
insertSort(data, mid + 1, r - mid); 0p'g+ 2  
EDg; s-T=  
for (i = l; i <= mid; i++) { >,f5 5  
temp = data; Ex{;&UWm  
} d/E0opv  
for (j = 1; j <= r - mid; j++) { &]c7<=`K"  
temp[r - j + 1] = data[j + mid]; s2K8|q=  
} H+Q_%%[N  
int a = temp[l]; $-gRD|oY  
int b = temp[r]; VC^QCuSq  
for (i = l, j = r, k = l; k <= r; k++) { &cf_?4  
if (a < b) { F^Mt}`O  
data[k] = temp[i++]; h\8bo=  
a = temp; j)}TZx4~  
} else { :{?Pq8jP  
data[k] = temp[j--]; ' &Nv|v\V  
b = temp[j]; $ccCI \  
} i^ eDM.#X  
} ~Yg+bwh  
} ]jV1/vJ-!  
u<HJFGLzI  
/** [LSs|f  
* @param data kb'l@d#E  
* @param l D \boF+^  
* @param i dkZ[~hEQG-  
*/ Rtai?  
private void insertSort(int[] data, int start, int len) { V}Pv}j:;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Rz33_ qA  
} Fh.Z sPn,m  
} `>`{DEDx{5  
} EHt(! ;?q  
} ),0Ea~LB4  
p0HcuB)Y  
堆排序: d^`n/"Ice  
'zuA3$SR  
package org.rut.util.algorithm.support; lV?OYS|4i  
 "-G&]YMl  
import org.rut.util.algorithm.SortUtil; i.+#a2   
>  !WFY  
/** 3 FLht L  
* @author treeroot 2O`s'&.h  
* @since 2006-2-2 ;zi4W1  
* @version 1.0 OP DRV\  
*/ q_:B=w+bC  
public class HeapSort implements SortUtil.Sort{ -J++b2R\%  
EyV6uk~  
/* (non-Javadoc) 1(4IcIR5T;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N'8}5Kx5  
*/ ))uki*UNK  
public void sort(int[] data) { 8FBXdk?A  
MaxHeap h=new MaxHeap(); _"qX6Jc  
h.init(data); 3L;&MG=  
for(int i=0;i h.remove(); qox@_  
System.arraycopy(h.queue,1,data,0,data.length); Yk5Cyq  
} " R-Pe\W  
=z2g}X  
private static class MaxHeap{ ]ov"&,J  
RaB%N$.9s  
void init(int[] data){ BEii:05  
this.queue=new int[data.length+1];  !:|D[1m  
for(int i=0;i queue[++size]=data; S&~;l/  
fixUp(size); @|9V]bk  
} AkBEE  
} m# I  
G88g@Exk  
private int size=0; "@&I*1&  
YGkk"gFIA  
private int[] queue; ~)!vhdBe  
[1.>9ngj  
public int get() { IaRq6=[  
return queue[1]; 50`<[w<J q  
} FdmoR;  
)>WSuf j  
public void remove() { %<'PSri  
SortUtil.swap(queue,1,size--); N x/_+JWje  
fixDown(1); fngk<$lvg  
} !*=+E%7  
file://fixdown 1.q a//'RW  
private void fixDown(int k) { %;YERO!  
int j; @4j!M1} 4  
while ((j = k << 1) <= size) { :JG2xtn  
if (j < size %26amp;%26amp; queue[j] j++; YDiru  
if (queue[k]>queue[j]) file://不用交换 hkR Jqta)  
break; q=uJ^N  
SortUtil.swap(queue,j,k); mV'^4by  
k = j; I$1~;!<  
} wfBf&Z0{  
} LF_am*F  
private void fixUp(int k) { N`!=z++G  
while (k > 1) { X:gE mcXc  
int j = k >> 1; qvN 5[rb  
if (queue[j]>queue[k]) nV?e(}D  
break; j*@EJ"Gm>  
SortUtil.swap(queue,j,k); /Wm3qlv  
k = j; 4(}V$#^+  
} )Xd2qbi  
} F5/,H:K\  
kI#yW!  
} y ;T=u(}  
#6qLu  
} sBWLgJz?C  
gX *i"Y#  
SortUtil: YDo,9  
EyPF'|Qtn  
package org.rut.util.algorithm; Z<6Fq*I  
e(sV4Z~  
import org.rut.util.algorithm.support.BubbleSort; ;PG,0R`Z;  
import org.rut.util.algorithm.support.HeapSort; ~0XV[$`L  
import org.rut.util.algorithm.support.ImprovedMergeSort; j?9fb  
import org.rut.util.algorithm.support.ImprovedQuickSort; 4Nz]LK%@  
import org.rut.util.algorithm.support.InsertSort; \J3n[6;  
import org.rut.util.algorithm.support.MergeSort; @P}!mdH1  
import org.rut.util.algorithm.support.QuickSort; s4Y7x.-  
import org.rut.util.algorithm.support.SelectionSort; +#0,2 wR#  
import org.rut.util.algorithm.support.ShellSort; "r.eN_d  
ao.v]6a  
/** nXcOFU  
* @author treeroot k6W  [//  
* @since 2006-2-2 ys$X!Ep  
* @version 1.0 <bxp/#6D  
*/ +UC-  
public class SortUtil { *[[TDduh&  
public final static int INSERT = 1; <)$b=z  
public final static int BUBBLE = 2; 7"Iagrgw  
public final static int SELECTION = 3; U4$CkTe2Y  
public final static int SHELL = 4; t(?tPt4zp  
public final static int QUICK = 5; ' CO3b,  
public final static int IMPROVED_QUICK = 6; k=qb YGK  
public final static int MERGE = 7; @+ U++  
public final static int IMPROVED_MERGE = 8; yW)X asn  
public final static int HEAP = 9; h"5!puN+  
b py576GwA  
public static void sort(int[] data) { )nJh) {4\  
sort(data, IMPROVED_QUICK); (xhV>hsA  
} dGBVkb4]T  
private static String[] name={ >J No2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7e D<(  
}; } X[wWH  
ia}V8i  
private static Sort[] impl=new Sort[]{ 8q#Be1u<s2  
new InsertSort(), - Ado-'aaS  
new BubbleSort(), YXWlg%s  
new SelectionSort(), J`4{O:{4  
new ShellSort(), KF4}cM=.5  
new QuickSort(), V;-YM W  
new ImprovedQuickSort(), gzD NMM  
new MergeSort(), @G;\gJT*  
new ImprovedMergeSort(), rq>Om MQ67  
new HeapSort() -{'WIGm  
}; wX*F'r"z  
F-2&P:sjQ  
public static String toString(int algorithm){ ' Zmslijf  
return name[algorithm-1]; b#[7A  
} @$(@64r  
~)&im.Q4  
public static void sort(int[] data, int algorithm) { N3}jLl/  
impl[algorithm-1].sort(data); P_f^gB7  
} |&]04  
my^2}>wi  
public static interface Sort { 5U+a{oA  
public void sort(int[] data); XKq}^M&gy  
} d;9F2,k$w  
 E\! <=  
public static void swap(int[] data, int i, int j) { T=n)ea A  
int temp = data; nd/.]"  
data = data[j]; dNMz(~A[Y  
data[j] = temp; Y"&1jud4xl  
} t*'U|K4L/  
} *(sUz?t  
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