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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。 mP[u[|]  
插入排序: 8:fiO|~%  
MV \zwH  
package org.rut.util.algorithm.support; TL gVuY  
p n>`v   
import org.rut.util.algorithm.SortUtil; R,1,4XT  
/** 6|}mTG^  
* @author treeroot b.;}Hq>  
* @since 2006-2-2 Tj9q(Vq  
* @version 1.0 e*s{/a?,  
*/ \9QOrjiw  
public class InsertSort implements SortUtil.Sort{ V1A3l{>L  
-#x\E%v.F  
/* (non-Javadoc) .y+U7 "?s*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5wX>PJS  
*/ G)7sXEe  
public void sort(int[] data) { q /?_djv  
int temp; hGV/P94  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q#KjX;No  
} `oBzt |f5  
} <=M}[  
} _s8_i6 Y  
6u7wfAf  
} lZ_k307  
(mlc' ]F  
冒泡排序: fif<[Ax  
_y UFe&  
package org.rut.util.algorithm.support; m.1BLN[9  
i>2_hn_UR  
import org.rut.util.algorithm.SortUtil; xK3;/!\`  
Kx0dOkE  
/** eVXbYv=gJ@  
* @author treeroot f lB2gr^  
* @since 2006-2-2 .SN]hLV5  
* @version 1.0 !&[4T#c  
*/ X2v'9 x  
public class BubbleSort implements SortUtil.Sort{ z?,5v`,t2  
gBu4`M  
/* (non-Javadoc) ? Q}{&J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {A UEVt  
*/ )K~nZLULY  
public void sort(int[] data) { rI/KrBM  
int temp; YyIt-fPZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @jKB!z9{  
if(data[j] SortUtil.swap(data,j,j-1); <H6Uo#ao  
} YSyW '~!b  
} PAkW[;GSDh  
}  E"=$p $k  
} Sdp1h0E}7=  
}q9f,mz  
} <lR8MqjM_  
Hr$5B2'  
选择排序: I2'?~Lt  
$hio (   
package org.rut.util.algorithm.support; gp=0;#4 4  
o1\8>Ew  
import org.rut.util.algorithm.SortUtil; *OiHrI9y  
0 i"OG( ,  
/** O5 SX"A  
* @author treeroot ?*,q#ZkA9W  
* @since 2006-2-2 v(`$%V.  
* @version 1.0 ?9+;[X  
*/ 2uIAnbW]M  
public class SelectionSort implements SortUtil.Sort { M_K&x-H0  
)f Rh^6  
/* . {I7sUQ  
* (non-Javadoc) =%LS9e^7D  
* Gj=il-Po  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ry C7  
*/ 8@-US , |  
public void sort(int[] data) { A7H=#L+C  
int temp; zVu}7v()  
for (int i = 0; i < data.length; i++) { OK=t)6&b  
int lowIndex = i; ^-ZqS  
for (int j = data.length - 1; j > i; j--) { o/R-1\Dn  
if (data[j] < data[lowIndex]) { ;q Z2V  
lowIndex = j; #Z :r  
} I/g]9 y  
} P}gh-5x  
SortUtil.swap(data,i,lowIndex); #LiC@>  
} \Z8!iruN  
} \B)<<[ $  
wr`eBPu  
} !?{5ET,gtN  
I8y\D,  
Shell排序: \GWC5R7Q0j  
a'BBp6  
package org.rut.util.algorithm.support; 1Q<a+ l  
Yh=Zn[ U  
import org.rut.util.algorithm.SortUtil; eo!z>9#.  
 BeQJ/`  
/** zx27aZ[  
* @author treeroot 3?:}lY<,  
* @since 2006-2-2 A Ho<E"R\  
* @version 1.0 <$E8T>U  
*/ M5]w U   
public class ShellSort implements SortUtil.Sort{ R-ci?7dt3  
/-T%yuU  
/* (non-Javadoc) R##O9BSI8Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y03l_E,  
*/ F>OYZOC]  
public void sort(int[] data) { 7DD ot_qb  
for(int i=data.length/2;i>2;i/=2){ $\H>dm  
for(int j=0;j insertSort(data,j,i); rAWBuEU;!  
} i> ;G4  
} [{YV<kN  
insertSort(data,0,1); %llG/]q#  
} "LYob}_z  
zC7;Zj*k  
/** Ae1},2py  
* @param data "'%x|nB  
* @param j t1kD5^  
* @param i ||qW'kNWM  
*/ 3hkA`YSYt  
private void insertSort(int[] data, int start, int inc) { ]^!#0(  
int temp; ,M9'S;&^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); I/'>Bn+  
} ][3 "xP  
} ctf'/IZ5  
} N'4*L=Ut  
SLW1]ZaG  
} sB $!X@  
!*p lK6a  
快速排序: ^-DK<jZ^  
46b.= }  
package org.rut.util.algorithm.support; gCmGFQE-f  
V5=Injs *  
import org.rut.util.algorithm.SortUtil; bbz86]AhY  
OnG?@sW+4!  
/** p?Y1^/   
* @author treeroot 3'8~H]<W  
* @since 2006-2-2 jsuQ R  
* @version 1.0 qFay]V(O|  
*/ &kP>qTI^p~  
public class QuickSort implements SortUtil.Sort{ -Jb I7Le  
GE>&fG  
/* (non-Javadoc) uy$o%NL-7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _$r+*nGDz  
*/ #N*~Q  
public void sort(int[] data) { nv|&|6?`oK  
quickSort(data,0,data.length-1); o;t{YfK  
} [=Xvp z  
private void quickSort(int[] data,int i,int j){ t ,0~5>5  
int pivotIndex=(i+j)/2; g%K3ah v  
file://swap JWLQ9U X  
SortUtil.swap(data,pivotIndex,j); ;lGjj9we>  
c Mq|`CM  
int k=partition(data,i-1,j,data[j]); wEdXaOEB5  
SortUtil.swap(data,k,j); |KuH2, n0  
if((k-i)>1) quickSort(data,i,k-1); L;Nm"[ `  
if((j-k)>1) quickSort(data,k+1,j); \hg12],#:@  
x k#/J]j  
} !aLL|}S  
/** YS/4<QA[  
* @param data w!61k \  
* @param i /MA4Er r  
* @param j .2`S07Z  
* @return g1Aq;Ah/  
*/ `Do-!G+W  
private int partition(int[] data, int l, int r,int pivot) { <MoWS9s!yb  
do{ 7uYJ _R  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3iDRt&y=.  
SortUtil.swap(data,l,r); h 9No'!'!  
} O`*}N1No[  
while(l SortUtil.swap(data,l,r); gP`8hNwR  
return l; vuHqOAFNs  
} m/<7FU8  
,2"-G";!f\  
} k5((@[  
zI&oZH^vn  
改进后的快速排序: U\+o$mU^  
YqYCW}$  
package org.rut.util.algorithm.support; Iu=iC.50}  
*f1MgP*GKF  
import org.rut.util.algorithm.SortUtil; tip\vS)  
n<?:!f`   
/** -FwOX~s/'  
* @author treeroot t|1?mH9  
* @since 2006-2-2 W@ #Y/L:${  
* @version 1.0 NT:p6(s^  
*/ TeQpmhN  
public class ImprovedQuickSort implements SortUtil.Sort { geua8;  
^MuO;<<,.  
private static int MAX_STACK_SIZE=4096; :hZYh.y\l  
private static int THRESHOLD=10; op;OPf,  
/* (non-Javadoc) >-f`mT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '(;`t1V8k  
*/ rlgp1>89  
public void sort(int[] data) { S_WYU&8  
int[] stack=new int[MAX_STACK_SIZE]; Mc9%s$MT  
U5odSR$  
int top=-1; MC^H N w  
int pivot; woQYP,  
int pivotIndex,l,r; 3s" Rv@  
5Osx__6$t  
stack[++top]=0; -|T.APxB  
stack[++top]=data.length-1; SO9j/  
FgLV>#)-  
while(top>0){ 2]hQ56Yv3  
int j=stack[top--]; 1Jt5|'tl  
int i=stack[top--]; _dj_+<Y?  
Y`w+?}(M  
pivotIndex=(i+j)/2; _uID3N%  
pivot=data[pivotIndex]; {U>B\D  
qy"#XbBeV  
SortUtil.swap(data,pivotIndex,j); V|)3l7IC<  
(i1 ]+.  
file://partition Ap=L lZ  
l=i-1; uD_iyK0,  
r=j; UO>ADRs}  
do{ m!V ?xGKJ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `$7. (.#s  
SortUtil.swap(data,l,r); uPhFBD7  
} pri=;I(2A  
while(l SortUtil.swap(data,l,r); -r7*C :E  
SortUtil.swap(data,l,j); K} LmU{/t/  
P-.>vi^+  
if((l-i)>THRESHOLD){ u?i_N0H  
stack[++top]=i; 8i;EpAwB  
stack[++top]=l-1; h${+{1](6  
} f.4r'^  
if((j-l)>THRESHOLD){ x=(Q$Hl5  
stack[++top]=l+1; (]>= y  
stack[++top]=j; CNwIM6t  
} akoK4!z  
+iY.YV  
} R.-2shOE'  
file://new InsertSort().sort(data); @lRTp  
insertSort(data); 9ePG-=5I  
} KEEHb2q  
/** >+ul LQqe  
* @param data nkUSd}a`r  
*/ EBc_RpC/Z  
private void insertSort(int[] data) { V4PI~"4q#1  
int temp; hCS|(8g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4$ya$Y%s%  
} e0Zwhz,  
} ihS;q6ln  
} tJ;<=.n  
WBvh<wTw;  
} yPs4S?<s  
z|E/pm$^  
归并排序: ya.!zGH  
*mwHuGbZed  
package org.rut.util.algorithm.support; 2iO AUo+  
;/l$&:  
import org.rut.util.algorithm.SortUtil; LQ(z~M0B  
9%T~^V%T7  
/** o`,|{K$H  
* @author treeroot fyaiRn9/  
* @since 2006-2-2 6aRPm%  
* @version 1.0 bis}zv^%v  
*/ LhO%^`vu  
public class MergeSort implements SortUtil.Sort{ z><u YO$  
M$iDaEu-  
/* (non-Javadoc) 3D|Y4OM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BWRAz*V  
*/ IYAvO%~  
public void sort(int[] data) { lV924mh  
int[] temp=new int[data.length]; 1$mxMXNsJ  
mergeSort(data,temp,0,data.length-1); 'Km ~3t  
} sxc^n aK0  
;r'y/ Y'?  
private void mergeSort(int[] data,int[] temp,int l,int r){ .LMOmc=(  
int mid=(l+r)/2; B /q/6Pp  
if(l==r) return ; t+y$i@R:  
mergeSort(data,temp,l,mid); HGIPz{/5U  
mergeSort(data,temp,mid+1,r); DO6Tz -%o  
for(int i=l;i<=r;i++){ #y;TSHx/  
temp=data; DD5 S R  
} ~0/tU#&  
int i1=l; D_kz'0^|  
int i2=mid+1; ML eo3  
for(int cur=l;cur<=r;cur++){ g2)jd[GM  
if(i1==mid+1) 2w"Xv,*.'i  
data[cur]=temp[i2++]; |W $epOLg  
else if(i2>r) tf<}%4G  
data[cur]=temp[i1++]; #x|xL7  
else if(temp[i1] data[cur]=temp[i1++]; / ,Unp1D  
else Y%$@ZYW  
data[cur]=temp[i2++]; GY% ^!r  
} S\wh *'Y  
} ygI81\ D  
t 3LRmjL  
} H[oCI|k  
$FR1^|P/G  
改进后的归并排序: JzuU k  
*S _[8L"  
package org.rut.util.algorithm.support; )\K;Ncp[  
B:5NIa  
import org.rut.util.algorithm.SortUtil; QEtf-xNn^  
5~8FZ-x  
/** <=O/_Iu(  
* @author treeroot +ftOJFkI  
* @since 2006-2-2 Hg[g{A_G[  
* @version 1.0 -!_\4  
*/ o}^/K m+t  
public class ImprovedMergeSort implements SortUtil.Sort { @bfW-\ I  
Jr2x`^aNO  
private static final int THRESHOLD = 10; Ei$?]~ &  
$4YyZ!_.@  
/* \Dn47V{7-  
* (non-Javadoc) Q5K<ECoPk  
* `3wzOMgJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t?&@bs5~g  
*/ Xgb ~ED]  
public void sort(int[] data) { d;:H#F+ (  
int[] temp=new int[data.length]; MawWgd*  
mergeSort(data,temp,0,data.length-1); XHN*'@ 77;  
} s}1S6*Cr  
cpY'::5.%  
private void mergeSort(int[] data, int[] temp, int l, int r) { XEX ."y  
int i, j, k; p*LG Y+  
int mid = (l + r) / 2; &Y `V A  
if (l == r) c>~q2_} W(  
return; E8gbm&x*  
if ((mid - l) >= THRESHOLD) !\'NBq,  
mergeSort(data, temp, l, mid); KCDbE6  
else LA +BH_t&  
insertSort(data, l, mid - l + 1); ' \8|`Zb  
if ((r - mid) > THRESHOLD) bh Nqj  
mergeSort(data, temp, mid + 1, r); f52*s#4}  
else h=a-~= 8  
insertSort(data, mid + 1, r - mid); 9>QGsf.3  
Gl!fT1zh0  
for (i = l; i <= mid; i++) { 'ptD`)^(  
temp = data; \jR('5DcB  
} r0Cc0TMdj  
for (j = 1; j <= r - mid; j++) { II,snRD  
temp[r - j + 1] = data[j + mid]; b '9L}q2m  
} 9e aqq  
int a = temp[l]; V eD<1<  
int b = temp[r]; 'c[|\M!u  
for (i = l, j = r, k = l; k <= r; k++) { #E'aa'P}  
if (a < b) { (9!/bX<  
data[k] = temp[i++]; %B#(d)T*-  
a = temp; <i1.W !%  
} else {  <u=k X  
data[k] = temp[j--]; 'B"A*!" b  
b = temp[j]; &x mYpQ  
} G=VbEL^H  
} AcoU.tpP  
}  0m&  
|Q|vCWel{  
/** h=x{ 3P;B  
* @param data TXH9BlDn  
* @param l 4tGP- L  
* @param i 5eL_iNqJM  
*/ Qnr7Qnb  
private void insertSort(int[] data, int start, int len) { VX'cFqrK3  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); R3dt-v  
} asj*/eC$/i  
} )ZHo7X  
} Ho^rYz  
} 2a,l;o$2&  
n){F FM  
堆排序: <H]1 6  
Cg]Iz< <bE  
package org.rut.util.algorithm.support; Q>QES-.l  
{=Y3[  
import org.rut.util.algorithm.SortUtil; lFZ}.  
0hCrEM!8  
/** CS\ E]f  
* @author treeroot f 8AgTw,K8  
* @since 2006-2-2 4Y x\U  
* @version 1.0 13f@Ox$  
*/ WF&?OHf2  
public class HeapSort implements SortUtil.Sort{ m Bc2x8g)  
j~#nJI5]  
/* (non-Javadoc) jn:9Cr,o;g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,x]xtg?  
*/ U%qE=u-  
public void sort(int[] data) { 2<X.kM?N{B  
MaxHeap h=new MaxHeap(); +#wh`9[wBt  
h.init(data); \|wUxijJ*,  
for(int i=0;i h.remove(); wVMR&R<t  
System.arraycopy(h.queue,1,data,0,data.length); &}."sGK  
} }iBFo\vU  
loR,f&80=O  
private static class MaxHeap{ 84|oqwZO  
g/_j"Nn  
void init(int[] data){ Yg<4}l."  
this.queue=new int[data.length+1]; BJ$\Mb##3@  
for(int i=0;i queue[++size]=data; GyP.;$NHa[  
fixUp(size); LagHzCB  
} l+!eC lM%  
} ~IhLjE  
-w3KBlo  
private int size=0; 9%  wVE]  
8gK  <xp  
private int[] queue; W81 dLeTZg  
83[gV@LW0m  
public int get() { 67]kT%0  
return queue[1]; r}%2;!T  
} _=*ph0nu  
J 6%CF2  
public void remove() { QY}1i .f  
SortUtil.swap(queue,1,size--); W}0cM9 g  
fixDown(1); =j&qat  
} rV[/G#V>{  
file://fixdown +.Cx.Nf(  
private void fixDown(int k) { "u=U@1 ^  
int j;  !L|PDGD  
while ((j = k << 1) <= size) { I4RUXi 5  
if (j < size %26amp;%26amp; queue[j] j++; P"k`h=>!4  
if (queue[k]>queue[j]) file://不用交换 PrwMR_-  
break;  >M-ZjT>  
SortUtil.swap(queue,j,k); |w)S &+  
k = j; \]$TBN dJ4  
} .R! /?eN  
} S)L(~ N1  
private void fixUp(int k) { 2z+-vT%  
while (k > 1) { \7elqX`.yY  
int j = k >> 1; g$a 5  
if (queue[j]>queue[k]) '|~L9t  
break; YVT\@+C'  
SortUtil.swap(queue,j,k); %!HBPLk  
k = j; 4Y!_tZ>  
} ;G\RGU~  
} HgfeSH  
xmp^`^v*  
} CgxGvM4  
O\=c&n~`  
} g*a|QBj%  
3`3`iN!8\@  
SortUtil: ckCb)r_  
oe,37xa4  
package org.rut.util.algorithm; 2Ysl|xRo  
ZBcT@hxm  
import org.rut.util.algorithm.support.BubbleSort; @b2JR^  
import org.rut.util.algorithm.support.HeapSort; -ZKo/ N>6}  
import org.rut.util.algorithm.support.ImprovedMergeSort; j$Unw  
import org.rut.util.algorithm.support.ImprovedQuickSort; 9d8bh4[  
import org.rut.util.algorithm.support.InsertSort; T>e4Og"?  
import org.rut.util.algorithm.support.MergeSort; ouO<un  
import org.rut.util.algorithm.support.QuickSort; DuzJQ Sv  
import org.rut.util.algorithm.support.SelectionSort; FXd><#U  
import org.rut.util.algorithm.support.ShellSort; i<>zN^zn  
p^/6Rb"e  
/** #lo1GoL\  
* @author treeroot \&#pJBBG  
* @since 2006-2-2 B33H,e)  
* @version 1.0 VzZ'W[/7)B  
*/ ` fm^#Nw  
public class SortUtil { u?-X07_  
public final static int INSERT = 1; PY{])z3N  
public final static int BUBBLE = 2; !b:;O +[  
public final static int SELECTION = 3; cZd{K[fuK  
public final static int SHELL = 4; '(o*l  
public final static int QUICK = 5; yL.Z{wd  
public final static int IMPROVED_QUICK = 6; uFH ]w] X  
public final static int MERGE = 7; t.YY?5 l  
public final static int IMPROVED_MERGE = 8; (I7s[  
public final static int HEAP = 9; b0n " J`  
 p;k7\7  
public static void sort(int[] data) { 0Xx&Z8E  
sort(data, IMPROVED_QUICK); kH9P(`;Vq  
} ,'0Zd(s  
private static String[] name={ o1B8_$aYgc  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" u hJnDo  
}; x.ZW%P1  
+#Q\;; FNP  
private static Sort[] impl=new Sort[]{ \ =(r6X  
new InsertSort(), -YD+x PD  
new BubbleSort(), I C?bqC+  
new SelectionSort(), 8a}et8df:  
new ShellSort(), -Nn@c|fz  
new QuickSort(), 'Bc{N^  
new ImprovedQuickSort(), 08 $y1;  
new MergeSort(), L2GUrf  
new ImprovedMergeSort(), ln~;Osb  
new HeapSort() M}c gVMW  
}; 5:r*em  
A\IQM^i  
public static String toString(int algorithm){ EJ&aT etQ  
return name[algorithm-1]; nz%{hMNYH  
} zUNWcv!& "  
%n7Y5|Uh  
public static void sort(int[] data, int algorithm) { 3LK]VuZE  
impl[algorithm-1].sort(data); g.9:R=JPT  
} v vvH5NRm  
~8#Ku,vEy  
public static interface Sort { _/(7:  
public void sort(int[] data); wEu"X  
} ML9nfB^z!  
8:QnxrODP  
public static void swap(int[] data, int i, int j) { njoU0f1`  
int temp = data; ) }.<lSw  
data = data[j]; =iZj&B X  
data[j] = temp; 9PZY](/  
} &Ub0o2+y  
} Nd] w I|>  
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