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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。 s^T+5 E&}  
插入排序: Z7jX9e"L  
o;[bJ Z\^x  
package org.rut.util.algorithm.support; M)cGz$Q|  
/dDzZ%/@  
import org.rut.util.algorithm.SortUtil; E-1"+p  
/** ^UA(HthY  
* @author treeroot ]Fb0Az  
* @since 2006-2-2 %TrF0{NR90  
* @version 1.0 $gMCR b,  
*/ %So] 3;'  
public class InsertSort implements SortUtil.Sort{ P=H+ #  
o7+>G~i  
/* (non-Javadoc) Q&M'=+T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /9Ilo\MdD  
*/ J`#` fX  
public void sort(int[] data) { 4B?!THjk  
int temp; #\bP7a +  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XtBMp=7Oa  
} y7<&vIEC  
} Napf"Av  
} 2@vj!U8  
W>spz~w%j  
} eFTX6XB:i  
6(sIYZ2yq  
冒泡排序: S2~@nhO`U(  
}iIbcA  
package org.rut.util.algorithm.support; v6e%#=  
g$j6n{Yl  
import org.rut.util.algorithm.SortUtil; qvt-  
/f1'm@8;  
/** *rqm8z50a  
* @author treeroot R#4 ^s  
* @since 2006-2-2 FoPginZ]J  
* @version 1.0 J?P]EQU  
*/ |t\|:E>" }  
public class BubbleSort implements SortUtil.Sort{ uC~g#[I QM  
. 9 LL+d  
/* (non-Javadoc) |ia@,*KD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ykq'g|  
*/ .V%*{eHLL  
public void sort(int[] data) { >kdM:MK  
int temp; OR+A_:c.D  
for(int i=0;i for(int j=data.length-1;j>i;j--){ C]`eH *z~8  
if(data[j] SortUtil.swap(data,j,j-1); /hdf{4  
} 4FA|[An  
} [V@yRWI  
} "7?js $  
} OoP@-D"e  
{ U <tc4^  
} rbk<z\pc  
!Y;<:zx5  
选择排序: )-&nxOP  
>,h1N$A+  
package org.rut.util.algorithm.support; s?O&ZB2GM[  
b?kPN:U#N/  
import org.rut.util.algorithm.SortUtil; ]5|z3<K^  
Goj4`Hc  
/** j$eCe< .3  
* @author treeroot gJ\%>r7h  
* @since 2006-2-2 Ugi5OKdj7)  
* @version 1.0 RT"O;P  
*/ +0pW/4x  
public class SelectionSort implements SortUtil.Sort { PW_`qP:  
$(>f8)Uku(  
/* I^fP k  
* (non-Javadoc) -[.PH M6+?  
* TC-f%1(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L? ;/cO^  
*/ ,0T)Oc|HL/  
public void sort(int[] data) { - 8syjKTg  
int temp; xQz#i-v  
for (int i = 0; i < data.length; i++) { ^now}u9S6  
int lowIndex = i; NyJnOw(  
for (int j = data.length - 1; j > i; j--) { 4/L>&%8V  
if (data[j] < data[lowIndex]) { umDtp\  
lowIndex = j; IYNMU\s  
} MOV =n75  
} >.Q0 Tx!P  
SortUtil.swap(data,i,lowIndex); ?~qC,N[  
} rh$1-Y  
} 6=>7M b$  
k.Zll,s  
} ?"@ET9  
}%{=].)L  
Shell排序: (G5T%[/U  
w2 )/mSnu  
package org.rut.util.algorithm.support; dy_.(r5[L]  
\r]('x3S  
import org.rut.util.algorithm.SortUtil; Za\RM[Z!I  
silp<13HN  
/** 5c~'!:7  
* @author treeroot Ck(.N  
* @since 2006-2-2 v,\93mNp[  
* @version 1.0 SY6r 8RK  
*/ J%4HNW*p  
public class ShellSort implements SortUtil.Sort{ 70<K .T<b  
b@-)Fy4d2  
/* (non-Javadoc) P`!Ak@N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9`&77+|;e  
*/ t/Z!O z6ZE  
public void sort(int[] data) { P7 8uq  
for(int i=data.length/2;i>2;i/=2){ >H?uuzi  
for(int j=0;j insertSort(data,j,i); w$% BlqN  
} }9Q f#&o  
} )tPl<lb  
insertSort(data,0,1); ?W<cB`J  
} Y?.gfEXSQo  
%EB;1  
/** 0HPO" x3-O  
* @param data l-=e62I{=|  
* @param j E<a.LW@  
* @param i (q k5f`O  
*/ F25<+ 1kr  
private void insertSort(int[] data, int start, int inc) { sVD([`Nmc  
int temp; j}RM.C\7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); akrCs&Kka5  
} hE5G!@1F  
} 3dU#Ueu  
} N('3oy#8  
0sabh`iQ^  
} c V(H<"I  
]84YvpfW  
快速排序: 7`+UB>8  
wKrdcWI,Z  
package org.rut.util.algorithm.support; /p[y1  
7?]!Ecr"  
import org.rut.util.algorithm.SortUtil; P59uALi  
c.6QhE  
/** ,|QU] E @  
* @author treeroot Pd& ,G$l  
* @since 2006-2-2 ,QL(i\  
* @version 1.0 I,z"_[^G  
*/ a5I%RY  
public class QuickSort implements SortUtil.Sort{ kpY%&  
DUPmq!A  
/* (non-Javadoc) `~KAk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wJr/FE 7c  
*/ 2?pM5n  
public void sort(int[] data) { (77Dif0)'  
quickSort(data,0,data.length-1); X?_v+'G  
} P ]_Vz  
private void quickSort(int[] data,int i,int j){ mlmnkgl ]  
int pivotIndex=(i+j)/2; X{|k<^:  
file://swap SFOQM*H  
SortUtil.swap(data,pivotIndex,j); 'U*udkn 2]  
?xf~!D  
int k=partition(data,i-1,j,data[j]); aH9L|BN*  
SortUtil.swap(data,k,j); l85CJ+rg  
if((k-i)>1) quickSort(data,i,k-1); .>oM z&  
if((j-k)>1) quickSort(data,k+1,j); 3?]S,~!F  
I@c0N*(  
} X[Y #+z4  
/** `ITDTZ J  
* @param data 34]%d<;A  
* @param i _]Z$YM  
* @param j 1(D1}fcul  
* @return q2D`1nT  
*/ ;?#i]Bh>S  
private int partition(int[] data, int l, int r,int pivot) {  6.vNe  
do{ r6<ArX$Yl  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); UFJEs[?+Te  
SortUtil.swap(data,l,r); _4g}kL02.  
} hkL w&;WJr  
while(l SortUtil.swap(data,l,r); 6l=M;B7:i  
return l; 1gL8$.B?  
} vatx+)  
lTd+{TF.  
} X^9t  
8F.(]@NY  
改进后的快速排序: H?ieNXP7{  
~ 6TfW~V  
package org.rut.util.algorithm.support; xDNw /'  
6pS Rum  
import org.rut.util.algorithm.SortUtil; s@R3#"I  
F 'fM?!(  
/** '$lw[1  
* @author treeroot ]IL3$eR  
* @since 2006-2-2 "P9wT)J_  
* @version 1.0 xU:PhhS  
*/ :s? y,  
public class ImprovedQuickSort implements SortUtil.Sort { ((n5';|N  
 ; \Y-  
private static int MAX_STACK_SIZE=4096; $K;_Wf  
private static int THRESHOLD=10; x Xl$Mp7  
/* (non-Javadoc) 1Q3%!~<\s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Es_ SCWJ  
*/ [UUM^!1  
public void sort(int[] data) { >V3W>5X  
int[] stack=new int[MAX_STACK_SIZE]; 6eVe}V4W  
r(748Qc4f?  
int top=-1; ,2Sv1v$  
int pivot; O7E;W| ]  
int pivotIndex,l,r; (%=lq#,   
b'i%B9yU:%  
stack[++top]=0; G>9'5Lt  
stack[++top]=data.length-1; kemr@_  
H 7 o$O  
while(top>0){ {5?!`<fF  
int j=stack[top--]; IiQWs1  
int i=stack[top--]; k)o7COx  
2-/YYe;C  
pivotIndex=(i+j)/2; }d$vcEI$3  
pivot=data[pivotIndex]; (2&K (1.Y  
$=QNGC2+  
SortUtil.swap(data,pivotIndex,j); jCdZ}M($  
9QO!vx  
file://partition a?f5(qW3  
l=i-1; e /ppZ>  
r=j; 5k_Mj* {6  
do{ *m2d#f  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GN8`xR{J*  
SortUtil.swap(data,l,r); .l" _ K  
} rQAbN6  
while(l SortUtil.swap(data,l,r); ]&; G\9$y  
SortUtil.swap(data,l,j); (*c`<|)  
-#:Y+"'  
if((l-i)>THRESHOLD){ !^Qb[ev  
stack[++top]=i; |O #wdnYW  
stack[++top]=l-1; !)=#p9  
} ,DW0A//  
if((j-l)>THRESHOLD){ Ji)a%j1V9  
stack[++top]=l+1; CgaB)`.  
stack[++top]=j; 6-Vl#Lyb  
} Ra*k  
INeWi=1  
} %u<&^8EL+#  
file://new InsertSort().sort(data); Sv CK;$:  
insertSort(data); w2RESpi  
} 9 ^=t@  
/** gGceK^#  
* @param data 1yY'hb,0  
*/ QB oZCLv  
private void insertSort(int[] data) { d60Fi#3d  
int temp; a93d'ZE-X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0VWCm( f-  
} C=pPI  
} ^.B `Z{Jb  
} ()rx>?x5  
r A&#>R`  
} n[S41809<  
^y;OHo  
归并排序: z;Gbqr?{{  
7m@^=w  
package org.rut.util.algorithm.support; Z"PDOwj5  
|M0,%~Kt  
import org.rut.util.algorithm.SortUtil; h)aWerzL  
D[FfJcV'$  
/** A,A-5l<h]?  
* @author treeroot EIVQu~,H  
* @since 2006-2-2 Q?I"J$]&L  
* @version 1.0 OM#OPB rB  
*/ !ktA"Jx  
public class MergeSort implements SortUtil.Sort{ UO7a}Tz<  
Iu)(Huv  
/* (non-Javadoc) =QO1FO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2*UE&Gp  
*/ *X =f  
public void sort(int[] data) { \?Oly171  
int[] temp=new int[data.length]; 'KIi!pA.  
mergeSort(data,temp,0,data.length-1); ,nuDoc  
} .\hib. n3  
{ <ao4w6B  
private void mergeSort(int[] data,int[] temp,int l,int r){ "ZK5P&d  
int mid=(l+r)/2;  *<h  
if(l==r) return ; <8xP-(wk;  
mergeSort(data,temp,l,mid); uk>/I l  
mergeSort(data,temp,mid+1,r); FZ'>LZ  
for(int i=l;i<=r;i++){ yz&q2  
temp=data; P*qNRP%  
} BIB>U W  
int i1=l; [laL6  
int i2=mid+1; WRU@i;l  
for(int cur=l;cur<=r;cur++){ MjF.>4  
if(i1==mid+1) t&?v9n"X  
data[cur]=temp[i2++]; C">=2OO  
else if(i2>r) =-B3vd:LF  
data[cur]=temp[i1++]; :4L5@>b-  
else if(temp[i1] data[cur]=temp[i1++]; ztxQv5=:,  
else FlA$G3  
data[cur]=temp[i2++]; 8aIf{(/k  
} 0m| Gp  
} xuH<=-O>ki  
gQcr'[[a  
} Qak@~b  
F|3FvxA  
改进后的归并排序: 4) I/\  
< c4RmnA  
package org.rut.util.algorithm.support; /dP8F  
|LGNoP}SA  
import org.rut.util.algorithm.SortUtil; zR/p}Wu|!  
MZ+IorZl  
/** '[ddE!ta  
* @author treeroot t>=y7n&q  
* @since 2006-2-2 1V9X(uP  
* @version 1.0 2b&;Y/z  
*/ F~- S3p  
public class ImprovedMergeSort implements SortUtil.Sort { Zp(P)Obs#  
N55=&-p  
private static final int THRESHOLD = 10; n N]vu  
!A<XqzV]  
/* ~!+h"%'t  
* (non-Javadoc) QvQf@o  
* u5)A+.v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y:``|*+  
*/ g!|E!\p  
public void sort(int[] data) { !JQ~r@j  
int[] temp=new int[data.length]; ,/?V+3l  
mergeSort(data,temp,0,data.length-1); ;s/b_RN  
} BU?MRcHC  
0FR%<u  
private void mergeSort(int[] data, int[] temp, int l, int r) { I4p= ?Ds  
int i, j, k; _e@qv;*  
int mid = (l + r) / 2; T_B.p*\BM  
if (l == r) vi.AzO  
return; D]`B;aE>A*  
if ((mid - l) >= THRESHOLD)  O,,n  
mergeSort(data, temp, l, mid); u2\qg;dP  
else Jn[ K0GV  
insertSort(data, l, mid - l + 1); 8'\,&f`Y  
if ((r - mid) > THRESHOLD) x$b[m 20  
mergeSort(data, temp, mid + 1, r); XI(@O)  
else h sw My  
insertSort(data, mid + 1, r - mid); Tb6x@MorP  
"._WdY[  
for (i = l; i <= mid; i++) { *b l{F\  
temp = data; I; }%k;v6  
} "RX5] eJc\  
for (j = 1; j <= r - mid; j++) { iOXP\:mPo  
temp[r - j + 1] = data[j + mid]; $u.T1v  
} |g^W @.P  
int a = temp[l]; s!!t  
int b = temp[r]; 9i[2z:4HJ  
for (i = l, j = r, k = l; k <= r; k++) {  /lok3J:  
if (a < b) { Gqc6).tn  
data[k] = temp[i++]; H+&w7ER  
a = temp; BRLU&@G`1  
} else { dw}3B8]  
data[k] = temp[j--]; |]3);^0  
b = temp[j]; -6Si  
} j/ IZm)\  
} @Lv_\^2/}  
} j1CD;9i)%  
aJ_Eh(cF  
/** M<m64{m1  
* @param data R[-:-8  
* @param l )Nd:PnA  
* @param i \4X{\ p<  
*/ <RsKV$Je I  
private void insertSort(int[] data, int start, int len) { X}FF4jE]D(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,#;ahwU~s  
} IL"#TKKv  
} E4ee_`p  
} fy4JW,c  
} bUB6B  
rAdcMFW  
堆排序: 7B2Og{P  
'^Np<  
package org.rut.util.algorithm.support; a~EEow;A  
VQ 3&  
import org.rut.util.algorithm.SortUtil; o=2`N2AL  
*,*5sV  
/** Y }d>%i+  
* @author treeroot r+Cha%&D  
* @since 2006-2-2 CfnCi_=[`  
* @version 1.0 ne*aC_)bT  
*/ O5%F-}(:  
public class HeapSort implements SortUtil.Sort{ oh~Dbu=%  
jC8BLyGE_  
/* (non-Javadoc) 9'aR-tFun;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }}2hI`   
*/ \$UU/\  
public void sort(int[] data) { },ZL8l{  
MaxHeap h=new MaxHeap(); TrA Uu`?#  
h.init(data); > n\ Q [W  
for(int i=0;i h.remove(); ;BvWU\!  
System.arraycopy(h.queue,1,data,0,data.length); <7Lz<{jaJ  
} b#^D8_9h  
`<Nc Y*  
private static class MaxHeap{ x;aZ&  
3Ab$  
void init(int[] data){ sB!A:  
this.queue=new int[data.length+1]; htlWC>*  
for(int i=0;i queue[++size]=data; 'z5 ;o :T  
fixUp(size); 2*FZ@?X@r  
} 3=I Q  
} C@W0fz  
5toNEDN  
private int size=0; svgi!=  
qeGOSGc_  
private int[] queue; ~epkRO="  
fE}}>  
public int get() { h UDEjW@S  
return queue[1]; PxY"{-iAM  
} z [{%.kA  
@@&;gWr;  
public void remove() { $6Psq=|  
SortUtil.swap(queue,1,size--); q[g^[~WM#  
fixDown(1); Iqv 5lo .  
} A;PV,2|X  
file://fixdown _JoA=< O!  
private void fixDown(int k) { Yuck]?#0  
int j; 7T78S&g  
while ((j = k << 1) <= size) { #=m5*}=  
if (j < size %26amp;%26amp; queue[j] j++; hNfL /^w  
if (queue[k]>queue[j]) file://不用交换 #+ =afJ  
break; T;7|d5][  
SortUtil.swap(queue,j,k); 2x CGr>X  
k = j; SOJHw6  
} 35et+9  
} C%h_!z":  
private void fixUp(int k) { _uacpN/<|  
while (k > 1) { @ZZ Lh=  
int j = k >> 1; sj2+|>  
if (queue[j]>queue[k]) mmti3Y  
break; Fx2&ji6u  
SortUtil.swap(queue,j,k); (>'d`^kjk  
k = j; 6zSN?0c  
} .v'8G)6g  
} wu3ZSLY  
>d |W>|8e  
} K+H82$ #  
`. Z".  
} 0'",4=c#V  
4`B:Mq&j  
SortUtil: bcg)K`'N  
uv4jbg}Z+3  
package org.rut.util.algorithm; ~-x\E#(  
$@X,J2&  
import org.rut.util.algorithm.support.BubbleSort; q_)DY f7V}  
import org.rut.util.algorithm.support.HeapSort; ?g2K&  
import org.rut.util.algorithm.support.ImprovedMergeSort; +=v|kd  
import org.rut.util.algorithm.support.ImprovedQuickSort; A2 r RYzN;  
import org.rut.util.algorithm.support.InsertSort; B _ >|Mo/  
import org.rut.util.algorithm.support.MergeSort; mJHX  
import org.rut.util.algorithm.support.QuickSort; ]b)(=-;>  
import org.rut.util.algorithm.support.SelectionSort; B Xp3u|t  
import org.rut.util.algorithm.support.ShellSort; J2-xnUa]7  
6 AY%o nY  
/** L'(^[vR(  
* @author treeroot D!CGbP(  
* @since 2006-2-2 OXo-(HLE  
* @version 1.0 wlJ_, wA  
*/ W\/0&H\i  
public class SortUtil { AkF3F^  
public final static int INSERT = 1; *niQ*A  
public final static int BUBBLE = 2; 5 ,HNb  
public final static int SELECTION = 3; 1JY4E2Q  
public final static int SHELL = 4; lB3X1e9  
public final static int QUICK = 5; D  UeT  
public final static int IMPROVED_QUICK = 6; o3yZCz  
public final static int MERGE = 7; Wl{Vz  
public final static int IMPROVED_MERGE = 8; uPpP")  
public final static int HEAP = 9; 6+>rf{5P7  
;Ti?(n#M>  
public static void sort(int[] data) { `|4{|X*U.  
sort(data, IMPROVED_QUICK); 6FfDif  
} q~Ud>{  
private static String[] name={ #gq3 e  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" tpS F[W  
}; BFY~::<b  
R_csKj  
private static Sort[] impl=new Sort[]{ 4)?c[aC4P  
new InsertSort(), 'W)x<Iey1  
new BubbleSort(),  GY>0v  
new SelectionSort(), mcvTz, ; =  
new ShellSort(), 6%? NNEM  
new QuickSort(), !eW<4jYB  
new ImprovedQuickSort(), a2zo_h2R  
new MergeSort(), %(i(ZW "  
new ImprovedMergeSort(), ,QDq+93  
new HeapSort() }-!$KR]:s  
}; NEvt71k  
}w$/x<Q[  
public static String toString(int algorithm){ '(Pbz   
return name[algorithm-1]; p^2pv{by  
} XHV+Y+VG  
1BF+sT3  
public static void sort(int[] data, int algorithm) { 0kDT:3  
impl[algorithm-1].sort(data); S5;q)qz2J  
} db`<E <  
K_xn>  
public static interface Sort { CZ @M~Si_  
public void sort(int[] data); oR~+s &c  
} SngV<J>zR  
Zhw _L  
public static void swap(int[] data, int i, int j) { d(&vIjy  
int temp = data; T]+*} C  
data = data[j]; 6;VlX,,j  
data[j] = temp; f!87JE=<  
} 4h|D[Cb]  
} R,(^fM  
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