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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。 z)-c#F@%  
插入排序: rjk( X|R*  
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package org.rut.util.algorithm.support;  &;c>O  
 )h_8vO2  
import org.rut.util.algorithm.SortUtil; )d`mvZBn1  
/** 0N;%2=2_E  
* @author treeroot Ak@Dyi?p  
* @since 2006-2-2 S,{tV=&m]  
* @version 1.0 ]Oeh=gq  
*/ h4)Bs\==mT  
public class InsertSort implements SortUtil.Sort{ 7TX2&kMoc  
xZ.!d.rn  
/* (non-Javadoc) np9dM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MYdO jcN  
*/ 56}X/u  
public void sort(int[] data) { h8{(KRa6  
int temp; B&0; 4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2C=Q8ayvX  
} @'6"7g  
} /=:j9FF  
} nw6pV%  
=9wy/c$  
} WsGths+[  
l \OLyQ  
冒泡排序: Dw6fmyJ:  
F3M aqr y  
package org.rut.util.algorithm.support; E4z)Mr#  
6.WceWBR  
import org.rut.util.algorithm.SortUtil; bHE2,;o  
<vV_%uo M  
/** aYn^)6^  
* @author treeroot K> g[k_  
* @since 2006-2-2 WXw}^v  
* @version 1.0 GVGlVAo|@  
*/ V3Z]DA  
public class BubbleSort implements SortUtil.Sort{ x;s0j"`Jb  
lLhL`C!  
/* (non-Javadoc) pzZk\-0R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  #xh_  
*/ q5DEw&UZJ  
public void sort(int[] data) { .a'f|c6  
int temp; 7gF"=7{-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Xf[kI  
if(data[j] SortUtil.swap(data,j,j-1); ^teq[l$;  
} 6%G-Vs]*2  
} tq1CwzRX  
} > L2HET  
} IxZb$h[  
V)ig)(CT  
} Z<?OwAWz  
@(g_<@Jz  
选择排序: baV>N[F&  
uVE.,)xz  
package org.rut.util.algorithm.support; q*7<)VwI  
PNs~[  
import org.rut.util.algorithm.SortUtil; 3?I;ovsM  
Pe73g%  
/** , t5 '  
* @author treeroot $;N*cH~  
* @since 2006-2-2 4<dcB@v  
* @version 1.0 j$7|XM6  
*/ v=@TWEE  
public class SelectionSort implements SortUtil.Sort { \y`+B*\i  
hj%ye~|~  
/* 9;.(u'y|  
* (non-Javadoc) D\dWt1n  
* /AY4M;}p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F,BOgWwP  
*/ D,v U  
public void sort(int[] data) { "\C$   
int temp; Yb3mP!3q8Z  
for (int i = 0; i < data.length; i++) { pKiZ)3U  
int lowIndex = i; N["W I r  
for (int j = data.length - 1; j > i; j--) { t]jFo  
if (data[j] < data[lowIndex]) { *g}Yw  
lowIndex = j; YHkcWz  
} GPz(j'jU  
} JF&$t}  
SortUtil.swap(data,i,lowIndex); K.<.cJE  
} i 9<pqQ  
} ygJr=_iA9  
JxE53ev  
} i':ydDOOHA  
fWfk[(M'9  
Shell排序: XR2~Q)@  
TxjYrzC  
package org.rut.util.algorithm.support; nRL. ppUI  
6tHO!`}1  
import org.rut.util.algorithm.SortUtil; X+L) -d  
xsd_Uu*  
/** c0B|F  
* @author treeroot g8qgk:}  
* @since 2006-2-2 A1'hlAGF  
* @version 1.0 )'17r82a  
*/ <h%O?mkC  
public class ShellSort implements SortUtil.Sort{ {;toI  
3.22"U\1:  
/* (non-Javadoc) 61puqiGG^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +/,icA}PI  
*/ @SZM82qU2z  
public void sort(int[] data) { {^(ACS9mL  
for(int i=data.length/2;i>2;i/=2){ :I -V_4b  
for(int j=0;j insertSort(data,j,i); .+7;)K   
} 7S/G B  
} NH$r Z7$  
insertSort(data,0,1); \^ghdU  
} ]8q3>  
JlMT<;7\  
/** kB?al#`  
* @param data ]f+ csB  
* @param j p' M%XBu  
* @param i I2nF-JzD2a  
*/ 3vcO!6Z5  
private void insertSort(int[] data, int start, int inc) { t`*!w|}(1  
int temp; .CL^BiD.D  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ee%fqVQ8P  
} ~gB>) ]  
} _ZY)M  
} ?\C"YG69T  
C<KrMRWh^  
} (Yp+bS(PU*  
O3TQixE  
快速排序: eF[63zx5*  
nJ~drG}TD  
package org.rut.util.algorithm.support; Ee`1F#c  
Wu4Lxv]B4  
import org.rut.util.algorithm.SortUtil; ?5_7;Ha  
t]7&\ihZi~  
/** 4`JH&))}  
* @author treeroot iw*Nq,(  
* @since 2006-2-2 *OuStr \o  
* @version 1.0 )Ke*JJaq  
*/ aLIBD'z  
public class QuickSort implements SortUtil.Sort{ ,9WBTH8  
aW>6NDq(  
/* (non-Javadoc) bh^LIU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vAyFmdJ^  
*/ CPNL 94x  
public void sort(int[] data) { 5:'hj$~|\1  
quickSort(data,0,data.length-1); B}PIRk@a1  
} K~@Mg1R  
private void quickSort(int[] data,int i,int j){ '1M7M(va  
int pivotIndex=(i+j)/2; 0eK*9S]  
file://swap W5SJ^,d)J  
SortUtil.swap(data,pivotIndex,j); |V<h=D5W  
035rPT7-2-  
int k=partition(data,i-1,j,data[j]); <.Nx[!'~&d  
SortUtil.swap(data,k,j); G:zua`u[  
if((k-i)>1) quickSort(data,i,k-1); Me 5_4H&Sg  
if((j-k)>1) quickSort(data,k+1,j); &|/| ''A)  
0GJn_@hr  
} [Q=dC X9%  
/** 'fW6 .0fXa  
* @param data FQ=@mjh  
* @param i zN  [2YJ$  
* @param j eImn+_ N3  
* @return ,"B+r6}EF  
*/ Iu$K i  
private int partition(int[] data, int l, int r,int pivot) { lP<:tR~K  
do{ '` pDngX  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); G "73=8d  
SortUtil.swap(data,l,r); ~%YBI9$+  
} *zr(Zv  
while(l SortUtil.swap(data,l,r); 6`f2-f9%iq  
return l; ">#wOm+ +  
}  cReB~wk  
E9~Ghx.   
} 33!oS&L  
;3' .C~   
改进后的快速排序: 8MSC.0   
-wjN"g<  
package org.rut.util.algorithm.support; M)U{7c$c7  
dPhQ :sd>  
import org.rut.util.algorithm.SortUtil; ;VWAf;U;B  
$sEy%-  
/** Uw 47LP  
* @author treeroot LqA@&H  
* @since 2006-2-2 0:+WO%z  
* @version 1.0 6L)%T02C  
*/ s0PrbL%_`  
public class ImprovedQuickSort implements SortUtil.Sort { ^Vpq$'!  
i9/aAH0  
private static int MAX_STACK_SIZE=4096; nw-I|PVTNa  
private static int THRESHOLD=10;  ]C) 4  
/* (non-Javadoc) ?mwD*LN3o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 92EWIHEWZ  
*/ Z?\2F%  
public void sort(int[] data) { p\bDY  
int[] stack=new int[MAX_STACK_SIZE]; ~$~5qwl  
p\<u6v ~J  
int top=-1; Nqu>6^-z0  
int pivot; }K&7%N4LZ  
int pivotIndex,l,r; e d<n9R  
]w.;4`l*  
stack[++top]=0; lBaR  
stack[++top]=data.length-1; [D!jv "  
~c&bH]cj  
while(top>0){ ^/r7@:  
int j=stack[top--]; m@^1JlH  
int i=stack[top--]; -?0qf,W.  
yxH ( c  
pivotIndex=(i+j)/2; gM _hi  
pivot=data[pivotIndex]; ]wtb-PC  
QDu2?EYZq  
SortUtil.swap(data,pivotIndex,j); <WcR,d  
U-|NY  
file://partition uXKERzg  
l=i-1; >k'c' 7/  
r=j;  jrS[f  
do{ l g-X:Z.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {DR`;ea])1  
SortUtil.swap(data,l,r); ndkti5L,   
} Cvf[/C+  
while(l SortUtil.swap(data,l,r); B#M5}QT|2  
SortUtil.swap(data,l,j); u,UmrR  
S;)w.  
if((l-i)>THRESHOLD){ 6Aku1h  
stack[++top]=i; -q*i_r:,  
stack[++top]=l-1; } q$ WvY/  
} =F@W gn,  
if((j-l)>THRESHOLD){ LbkF   
stack[++top]=l+1; GSRVe/ [  
stack[++top]=j; Pqn@ST  
} O)jWZOVp >  
T87 m?a$  
} gntxNp[9T  
file://new InsertSort().sort(data); g4l !xT  
insertSort(data); /bi}'H+#  
} sIxTG y.  
/** .dav8n*  
* @param data pim!.=vN/U  
*/ #H :7@  
private void insertSort(int[] data) { hy`?E6=9+  
int temp; gy_>`16K  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x= 5N3[5  
} HbxL:~:}J  
} |g//g\dd  
} | y2w9n0D  
D/Mi^5H)  
} sPR1?:0:  
lk( }-  
归并排序: v~^{{O  
h"/< ?3{  
package org.rut.util.algorithm.support; Zd')57{  
;t|Ii8Ne  
import org.rut.util.algorithm.SortUtil; @9lUSk^9  
P9vA7[  
/** #':fkIYe'  
* @author treeroot {62n7'U{  
* @since 2006-2-2 QC9eUYe  
* @version 1.0 fP(d8xTx2y  
*/ }3OKC2K~  
public class MergeSort implements SortUtil.Sort{ W;,C_   
s[w6FXt  
/* (non-Javadoc) y$_eCmq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "\3B^ e,  
*/ egq67S  
public void sort(int[] data) { E/%9jDTQ  
int[] temp=new int[data.length]; HxIIO[h  
mergeSort(data,temp,0,data.length-1); zc;|fHW~O  
} !K'}K>iT  
RH&~+5  
private void mergeSort(int[] data,int[] temp,int l,int r){ U4b0*`o  
int mid=(l+r)/2; (w}H]LQ  
if(l==r) return ; yc?a=6q'm  
mergeSort(data,temp,l,mid); [x,>?~6ek  
mergeSort(data,temp,mid+1,r); U15H@h  
for(int i=l;i<=r;i++){ uLWh |   
temp=data; w.\&9]P3~  
} ~,i-8jl,  
int i1=l; lLF-{  
int i2=mid+1; (aH'h1,G  
for(int cur=l;cur<=r;cur++){ 9R7 A8  
if(i1==mid+1) "$2 y-|  
data[cur]=temp[i2++]; n:{qC{D-qS  
else if(i2>r) 'coV^~qy  
data[cur]=temp[i1++]; ;,?KI$K  
else if(temp[i1] data[cur]=temp[i1++]; t},/}b  
else %>g3~yl  
data[cur]=temp[i2++]; `#;e)1  
} 2(#7[mgPI  
} .~l=zu  
34Kw!  
} BZ?.D_bu  
# ?/<  
改进后的归并排序: ' <@3i[M  
;{KV /<3  
package org.rut.util.algorithm.support; Z|lq b=  
|bO"_U  
import org.rut.util.algorithm.SortUtil; f)^_|8  
~wkj&yVT  
/** Ljp%CI[i  
* @author treeroot K|:@Z  
* @since 2006-2-2 w%JTTru  
* @version 1.0 e,Uo#T6J  
*/ =5(>q5Z*  
public class ImprovedMergeSort implements SortUtil.Sort { $w);5o  
yFtd=AI'E  
private static final int THRESHOLD = 10; %nV]ibp2)  
Cd>WUw  
/* Q+W1lv8R  
* (non-Javadoc) LC'{p  
* q)^Jj ?W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A m>cd;  
*/ Fd[zDz  
public void sort(int[] data) { 4}eepJOn  
int[] temp=new int[data.length]; qa0 yg8,<  
mergeSort(data,temp,0,data.length-1); $ >u*} X9  
} Yd#/1!A7u  
fR*q?,  
private void mergeSort(int[] data, int[] temp, int l, int r) { &i$ldR  
int i, j, k; ".<DAs j  
int mid = (l + r) / 2; aPm`^ q  
if (l == r) ,v';>.]  
return; $**r(HV  
if ((mid - l) >= THRESHOLD) Ljx(\Cm  
mergeSort(data, temp, l, mid); d ysC4DS  
else 'U\<IL#U  
insertSort(data, l, mid - l + 1); X ><?F|#7T  
if ((r - mid) > THRESHOLD) HLV2~5Txc  
mergeSort(data, temp, mid + 1, r); !3*(N8_|#  
else [&#/]Ul'  
insertSort(data, mid + 1, r - mid); 3< 2}V  
P dhEQ}H  
for (i = l; i <= mid; i++) { n8".XS  
temp = data; BA%pY|"Q  
} '<ZlGFt'n  
for (j = 1; j <= r - mid; j++) { 'gPzm|f|t@  
temp[r - j + 1] = data[j + mid]; iX2]VRNxl  
} 5yzv|mrx  
int a = temp[l]; gT#&"aP5S  
int b = temp[r]; \ytJ=0r  
for (i = l, j = r, k = l; k <= r; k++) { S&b*rA02zp  
if (a < b) { =Q+= f  
data[k] = temp[i++]; (}EB2V9Hh  
a = temp; k=4N.*#`y  
} else { o .qf _A  
data[k] = temp[j--]; O4^8jK}  
b = temp[j]; {:]9Q Tq  
} e=.njMqW5  
} Od5JG .]  
} }L#_\  
n1VaLD  
/** CB/D4j;  
* @param data 9Bw|(J  
* @param l 5 ({t4dm  
* @param i .MJofE;Jn  
*/ ^wc"&;=c|  
private void insertSort(int[] data, int start, int len) { EuyXgK>g  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); OG~6L4"  
} < F`>,Pm  
} G}:lzOlMH  
} m6[0Kws&  
} Od %"B\  
7,lq}a8z  
堆排序: #7 q7PYG4  
j+["JXy  
package org.rut.util.algorithm.support; @++.FEf  
}A7j/uy}s  
import org.rut.util.algorithm.SortUtil; iTAx=SG  
sSi6wO$  
/** Ft;^g3N  
* @author treeroot f'VX Y-  
* @since 2006-2-2 ~nG(5:A5g/  
* @version 1.0 +E.GLn2 /  
*/ <oX7P69  
public class HeapSort implements SortUtil.Sort{ !WpBfd>v.I  
h >s!K9  
/* (non-Javadoc) }Hxd*S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4bn(zyP  
*/ HY%i`]4X  
public void sort(int[] data) { % <q w  
MaxHeap h=new MaxHeap(); Y#lk6  
h.init(data); 7U2J xE  
for(int i=0;i h.remove(); Ooq! 0g  
System.arraycopy(h.queue,1,data,0,data.length); Bb}fj28  
} A3iFI9Iv  
}`,t$NV`  
private static class MaxHeap{ h?;T7|^  
dK2p7xo  
void init(int[] data){ 4*cU<  
this.queue=new int[data.length+1]; #[`:'e  
for(int i=0;i queue[++size]=data; vWf; 'j  
fixUp(size); li 6%)  
} @qnD=mE  
} 6w(6}m.L^  
U}PiY"S<  
private int size=0; x*nSHb  
!qN||m CH  
private int[] queue; "G@g" gP  
OSf}Q=BL  
public int get() { *Ie7{EhJ'  
return queue[1]; $+3}po\  
} X7i/fm{l'  
kT!9`S\  
public void remove() { /O^RF}  
SortUtil.swap(queue,1,size--); 7El[ >  
fixDown(1); t[oT-r  
} .On|uC)!  
file://fixdown 5_z33,q2  
private void fixDown(int k) {  OP x`u  
int j; 2U:H545]]  
while ((j = k << 1) <= size) { p-/|mL  
if (j < size %26amp;%26amp; queue[j] j++; (3 #Cl 1]f  
if (queue[k]>queue[j]) file://不用交换 4W)B'+ZK8  
break; K?zH35f$  
SortUtil.swap(queue,j,k); )l[M Q4vWW  
k = j; ;Mpy#yIU.  
}  $W9{P;  
} j"|=C$Kn/  
private void fixUp(int k) { !/3B3cG  
while (k > 1) { !cAyTl(_  
int j = k >> 1; \&iP`v`K  
if (queue[j]>queue[k]) D0#x Lh  
break; !H irhD N  
SortUtil.swap(queue,j,k); 0 rXx RQ  
k = j; }c}| $h^Y  
} [h34d5'w  
} d~:!#uWyFk  
QZ:8+[oy  
} PV/7 7{'  
\a6^LD}B  
} 'b#0t#|TM  
I9 mvt e  
SortUtil: EVVP]ND  
d\61; C  
package org.rut.util.algorithm; },>pDeX^P  
Qkd<sxL  
import org.rut.util.algorithm.support.BubbleSort; qLT>Mz)$ %  
import org.rut.util.algorithm.support.HeapSort; 3`ELKq  
import org.rut.util.algorithm.support.ImprovedMergeSort; `^FGwx@  
import org.rut.util.algorithm.support.ImprovedQuickSort; bV$)!]V  
import org.rut.util.algorithm.support.InsertSort; G1"zElug  
import org.rut.util.algorithm.support.MergeSort; 0DmMG  
import org.rut.util.algorithm.support.QuickSort; OVko+X`  
import org.rut.util.algorithm.support.SelectionSort; 8rMX9qTO@  
import org.rut.util.algorithm.support.ShellSort; I>[RqG  
!2'jrJGc  
/** -sjd&)~S[  
* @author treeroot pm\x~3jHs  
* @since 2006-2-2 \CXQo4P  
* @version 1.0 :I:!BXQT$  
*/ 4x;/HEb7?  
public class SortUtil { bLQ ^fH4ww  
public final static int INSERT = 1; `> ?ra-  
public final static int BUBBLE = 2; { Q`QX`#  
public final static int SELECTION = 3; f3Hed  
public final static int SHELL = 4; Ju3*lk/j-  
public final static int QUICK = 5; 1QU:?_\6@t  
public final static int IMPROVED_QUICK = 6; c=L2%XPP  
public final static int MERGE = 7; Jnna$6G)B  
public final static int IMPROVED_MERGE = 8; L\&<sy"H  
public final static int HEAP = 9; MwR 0@S}*  
?I [8'  
public static void sort(int[] data) { .Y3pS/VI  
sort(data, IMPROVED_QUICK); ywb4LKD  
} ae*Mf7  
private static String[] name={ z[cyA.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" f~d d3m('  
}; rSHpS`\ou  
(A?H1 9  
private static Sort[] impl=new Sort[]{ |d*&y#kV  
new InsertSort(), ewfP G,S  
new BubbleSort(), PB/IFsJ  
new SelectionSort(), Qum9A   
new ShellSort(), :L1dyVA{  
new QuickSort(), Q`rF&)Q5  
new ImprovedQuickSort(), VGceD$<  
new MergeSort(), |ZCn`9hvn  
new ImprovedMergeSort(), ltgc:&=|@  
new HeapSort() *r=:y{!Yd  
}; Gu'rUo3Do  
Pj4/xX  
public static String toString(int algorithm){ YQpSlCCo 3  
return name[algorithm-1]; h~p>re  
} o4%y>d)  
g"?Y+j  
public static void sort(int[] data, int algorithm) { 59%tXiO  
impl[algorithm-1].sort(data); +> WM[o^I  
} AwTJJ0>  
\uXcLhXN  
public static interface Sort { Z7_ zMM  
public void sort(int[] data); )E,\H@A  
} y-j\zK  
1xbK'i:-S  
public static void swap(int[] data, int i, int j) { 8:#rA*Y  
int temp = data; Pp| *J^U 4  
data = data[j]; ;Wl+ zw  
data[j] = temp; *_KFW@bC:  
} ,Vh{gm1  
} ^ mS o1?<  
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