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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。 \Y#  
插入排序: hV3]1E21"  
zK0M WyXO  
package org.rut.util.algorithm.support; (lsG4&\0F  
`&;#A*C0  
import org.rut.util.algorithm.SortUtil; 5nPvEN/  
/** T! }G51  
* @author treeroot C&O8fNB_  
* @since 2006-2-2 f,YORJ  
* @version 1.0 +Q&l}2  
*/ a-5UG#o  
public class InsertSort implements SortUtil.Sort{ O"9t,B>=i  
6Ga'_P:  
/* (non-Javadoc) cT(nKHL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =i~ = |K!  
*/  ZllmaI  
public void sort(int[] data) { }3 /io0"D  
int temp; 'm0WPS/6E  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q}#4Qz~n  
} tmGhJZ2j  
} 5%'ybh)@   
} ^P^"t^O  
sBlq)h;G?6  
} `JIp$  
h(WlJCln  
冒泡排序: 2e6P?pX~2  
Q-)(s  
package org.rut.util.algorithm.support; 1^IMoC7$#  
zkt~[-jm}  
import org.rut.util.algorithm.SortUtil; \t{iyUxY  
1P]J3o  
/** ~#g c{ C@  
* @author treeroot e"@r[pq-{u  
* @since 2006-2-2 pIIp61=$  
* @version 1.0 AB $N`+&  
*/ 8hV]t'/;  
public class BubbleSort implements SortUtil.Sort{ CfOyHhhKX  
m.P F'_)/  
/* (non-Javadoc) b'( AVA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tp;W  
*/ .p{lzI9  
public void sort(int[] data) { ErN[maix#  
int temp; @Z0. }}Y  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,):aU  
if(data[j] SortUtil.swap(data,j,j-1); >MJ %6A>  
} 3 EAr=E]  
} *b;)7lj0h  
} CCpRQKb=  
} xpZ@DK;  
Wz^;:6F  
} J^t0M\  
9f['TG,"  
选择排序: Ob%iZ.D|3<  
DN9x<%/-  
package org.rut.util.algorithm.support; 9X[378f+(  
0MT?}D&TL  
import org.rut.util.algorithm.SortUtil; <F`9;WX  
T7YJC,^m  
/** tL&_@PD)3  
* @author treeroot !:d\A  
* @since 2006-2-2 {? yRO]  
* @version 1.0 D}%VZA}].  
*/ kFJ]F |^7  
public class SelectionSort implements SortUtil.Sort { 4Zjd g`  
n2aUj(Zs=  
/* gISA13  
* (non-Javadoc) z@~Z Mk  
* AsS~TLG9p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /3+E-|4s  
*/ G>Bgw>#_  
public void sort(int[] data) { ;[zZI~wh  
int temp; vU/sQt8  
for (int i = 0; i < data.length; i++) { (3 ,7  
int lowIndex = i; X:FyNUa  
for (int j = data.length - 1; j > i; j--) { ,:.8s>+i  
if (data[j] < data[lowIndex]) { xR'd}>`  
lowIndex = j; r& RJ'z  
} a Sm</@tO&  
} YC{7;=P f  
SortUtil.swap(data,i,lowIndex); q9zeN:><  
} u`L*  
} VQ~eg wJL  
"{{@N4^  
} E?0RR'  
Kd#64NSi$A  
Shell排序: \  }-v  
JjAO9j%  
package org.rut.util.algorithm.support; kSJ:4!lFU  
6{Bvl[mhI  
import org.rut.util.algorithm.SortUtil; xoSBMf  
rI:]''PR  
/** I1ibrn  
* @author treeroot (_q&QI0{  
* @since 2006-2-2 a.<!>o<t:  
* @version 1.0 [o'}R`5)  
*/ .b%mr:nEt7  
public class ShellSort implements SortUtil.Sort{ HV3D$~gF  
kr ?`GQm  
/* (non-Javadoc) k/xNqN(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =66,$~g{  
*/ [yAR%]i-7  
public void sort(int[] data) { 9/\=6v C|  
for(int i=data.length/2;i>2;i/=2){ z:$TW{%M  
for(int j=0;j insertSort(data,j,i); (7aE!r\Ab  
} 7`X9s~B  
} A`1/g{Ha  
insertSort(data,0,1); HQ|{!P\/?U  
} `^E(P1oJ3  
%hzNkyD)Y  
/** qo;F]v*pkK  
* @param data X/wqfP  
* @param j hmd,g>J:<  
* @param i 3412znM&  
*/ dv \ oVD  
private void insertSort(int[] data, int start, int inc) { [26([H  
int temp; lO|H:7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4fzM%ku  
} gs|%3k|  
} =mk7'A>l  
} \E<)B#  
^coJ"[D  
} 4B8{\ "6  
hE/y"SP3  
快速排序: <<![3&p#  
{=d\t<p*n  
package org.rut.util.algorithm.support; kR-5RaW  
/SD2e@x{U  
import org.rut.util.algorithm.SortUtil; Ih95&HsdC  
P3YG:*  
/** G#0 4h{  
* @author treeroot }%rz"kB  
* @since 2006-2-2 (5N&bh`E  
* @version 1.0 |5,q54d(K  
*/ >!YI7)  
public class QuickSort implements SortUtil.Sort{ C31SXQ  
uEuK1f`  
/* (non-Javadoc) !-4pr[C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G>{;@u  
*/ $wVY)p9Q  
public void sort(int[] data) { vexQP}N0  
quickSort(data,0,data.length-1); D058=}^HE  
} |xaA3UA  
private void quickSort(int[] data,int i,int j){ G";yqG  
int pivotIndex=(i+j)/2; zUxF"g-W  
file://swap [w~1e)D  
SortUtil.swap(data,pivotIndex,j); \d%SC<s  
,[^P  
int k=partition(data,i-1,j,data[j]); F+AShh  
SortUtil.swap(data,k,j); s4}}MV3X  
if((k-i)>1) quickSort(data,i,k-1); >UuLSF}  
if((j-k)>1) quickSort(data,k+1,j); ]0dp^%  
}EO n=*  
} ZWVcCa 3  
/** U1rh[A>  
* @param data YrgwR  
* @param i J(-#(kMyf  
* @param j Ty]CdyL$  
* @return q@u$I'`Bs  
*/ `)H.TMI   
private int partition(int[] data, int l, int r,int pivot) { Z!|nc.  
do{ )r1Z}X(#d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); mrd(\&EhA  
SortUtil.swap(data,l,r); Ef$xum{  
} 'J<KL#og  
while(l SortUtil.swap(data,l,r); r0j:ll d  
return l; S3j/(BG  
} "v~w#\pz7  
@eT!v{o  
} c6dL S  
E9226  
改进后的快速排序: o~^hsm[44J  
WFN5&7$W  
package org.rut.util.algorithm.support; T?7 ZF+yo6  
NRq jn; ,+  
import org.rut.util.algorithm.SortUtil; 94|BSxc  
Pd^ilRB  
/** +5);"71  
* @author treeroot Fz)z&WT  
* @since 2006-2-2 3r^i>r8B  
* @version 1.0 "W:'cIw  
*/ AytHnp\H  
public class ImprovedQuickSort implements SortUtil.Sort { O2Rv^la  
;U}lh~e11  
private static int MAX_STACK_SIZE=4096; UO<%|{ W+  
private static int THRESHOLD=10; ='OPU5(;O  
/* (non-Javadoc) tq>QZEg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "2qp-'^[c  
*/ ?exV:OKLb  
public void sort(int[] data) { Ge[N5N>  
int[] stack=new int[MAX_STACK_SIZE]; ](- :l6  
&HZ"<y{j  
int top=-1; M.!U;U<?  
int pivot; = ?T'@C  
int pivotIndex,l,r; jcOxtDTSW  
a{69JY5  
stack[++top]=0; 9)T;.O  
stack[++top]=data.length-1; Al' sY^B  
{o5E#<)  
while(top>0){ :)?w 2'O  
int j=stack[top--]; VwHTtZ  
int i=stack[top--]; 6#.z:_  
^B> 4:+^  
pivotIndex=(i+j)/2; 0D:J d6\  
pivot=data[pivotIndex]; !1)lGjMW  
!}Cd_tj6  
SortUtil.swap(data,pivotIndex,j); p?=rQte([  
i@Q)`>4  
file://partition mTYEK4}  
l=i-1; }O5c.3  
r=j; &D>e>]E|P  
do{ Iz!Blk  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a` 95eL}  
SortUtil.swap(data,l,r); !YsL x[+  
} $ ;~G  
while(l SortUtil.swap(data,l,r); .P9ALJP(b  
SortUtil.swap(data,l,j); n4qj"x Q  
C B=H1+  
if((l-i)>THRESHOLD){ kiZA$:V8  
stack[++top]=i; S;a{wYF6v  
stack[++top]=l-1; AnfJyltS  
} g  O,X  
if((j-l)>THRESHOLD){ mz3!HksZ "  
stack[++top]=l+1; QOcB ]G  
stack[++top]=j; 0^5SL/2  
} Bk?3lwCT  
j{0_K +B  
} ~aNK)<Fznd  
file://new InsertSort().sort(data); <hkg~4EKc  
insertSort(data); E@7";&\-8  
} Ma: xxsH.  
/** 8sx\b  
* @param data x0?8AG%  
*/ ;mu9;ixZ  
private void insertSort(int[] data) { c&e?_@} |  
int temp; W0K&mBu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <}pqj3  
} Y<#WC#3=  
} c1'OIK C  
} sF C&DTb?  
#^" \WG7{  
} dMp7 ,{FhF  
K@Twiw~rB  
归并排序: sT?Qlj'Zd  
dur}3oS0p  
package org.rut.util.algorithm.support; :G?"BL5vP  
t^)q[g  
import org.rut.util.algorithm.SortUtil; #9,!IW]l  
{l-,Jbfi`  
/** ZsirX~W<  
* @author treeroot [#fXmW>N/  
* @since 2006-2-2 ) **k3u t4  
* @version 1.0 \5BI!<  
*/ Z=_p  
public class MergeSort implements SortUtil.Sort{ (9CB&LZ(+E  
J/pW*G-U|  
/* (non-Javadoc) #r `hK)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z1aApS  
*/ L"rLalUw  
public void sort(int[] data) { a.v$+}+.[,  
int[] temp=new int[data.length]; kzZtKN9Az  
mergeSort(data,temp,0,data.length-1); |{k;p fPV  
} VZ &>zF  
?D/r1%Z  
private void mergeSort(int[] data,int[] temp,int l,int r){ 0|nvi=4~e|  
int mid=(l+r)/2; B!K{y>|.  
if(l==r) return ; I1=YSi;A  
mergeSort(data,temp,l,mid); S U~vS   
mergeSort(data,temp,mid+1,r); #IDDKUE  
for(int i=l;i<=r;i++){ j01.`G7Q  
temp=data; : FF:{&d  
} DKqFe5rw  
int i1=l; v)N8vFdd  
int i2=mid+1; U5jY/e_  
for(int cur=l;cur<=r;cur++){ w:I^iI .  
if(i1==mid+1) NDglse  
data[cur]=temp[i2++]; `9B xDp]I  
else if(i2>r) &STgj|t_  
data[cur]=temp[i1++]; 9aD6mp  
else if(temp[i1] data[cur]=temp[i1++]; 6C9KT;6  
else lb2mWsg"  
data[cur]=temp[i2++]; ]^Z7w`=%5  
} d i`}Y&  
} t(VG#}  
EMU~gwPR  
} %}j.6'`{  
lSC3m=4g  
改进后的归并排序: Y=sRVypJ  
X0^gj>GI|  
package org.rut.util.algorithm.support; PA 5ET@mD  
g3 6oEz~|  
import org.rut.util.algorithm.SortUtil; k$y(H;XA  
N*$<Kjw  
/** &<R8'  
* @author treeroot .+]e9mV  
* @since 2006-2-2 C_dsYuQ5R  
* @version 1.0 @y[Zr6\z  
*/ M7/P&d  
public class ImprovedMergeSort implements SortUtil.Sort { LN ]ks)  
p<?~~7V  
private static final int THRESHOLD = 10;  4%LG9hS  
K~z*P 0g*  
/* #R4Mv(BG  
* (non-Javadoc) 5Qd |R  
* [@U8&W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \)eHf 7H  
*/ 8 Mp2MZ*p  
public void sort(int[] data) { 10_eUQN  
int[] temp=new int[data.length]; 9"52b 9U  
mergeSort(data,temp,0,data.length-1); B)O=wx  
} OYzt>hdH  
D$q"k"  
private void mergeSort(int[] data, int[] temp, int l, int r) { \NhCu$'  
int i, j, k; @k <RX'~q  
int mid = (l + r) / 2; qGuz`&i  
if (l == r) .3?'+KZ,  
return; nQdNXv<(  
if ((mid - l) >= THRESHOLD) 6[$kEKOY=  
mergeSort(data, temp, l, mid); `)\_  
else >hoIJZP,  
insertSort(data, l, mid - l + 1); >9a%"<(2#  
if ((r - mid) > THRESHOLD) Re5m  
mergeSort(data, temp, mid + 1, r); Q-F'-@`(C  
else Q\z3YUk  
insertSort(data, mid + 1, r - mid); r(yJE1Wz  
kuu9'Sqc'b  
for (i = l; i <= mid; i++) { 1)/B V{n  
temp = data; Jme}{!3m  
} }r]WB)_w  
for (j = 1; j <= r - mid; j++) { P{)H7B>  
temp[r - j + 1] = data[j + mid]; (6A>:_)  
} 5 usfyY]z  
int a = temp[l]; M$1+,[^f  
int b = temp[r]; pWSYbN+d  
for (i = l, j = r, k = l; k <= r; k++) { ?4Lb*{R  
if (a < b) { YH)U nql  
data[k] = temp[i++]; =}\]i*  
a = temp; ~53E)ilB  
} else { G\Hck=P[$3  
data[k] = temp[j--]; ^c< <I-o|  
b = temp[j]; $^IuE0.  
} c[!e*n!y  
} *u>2"!+Ob  
} uQ&&? j  
4S  2I]d  
/** d`StBXG!  
* @param data \@pl:Os  
* @param l \>cZ=  
* @param i QoDWR5*^D  
*/ vMzR3@4e  
private void insertSort(int[] data, int start, int len) { KK(x)(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]j*o&6cQf  
} u):z1b3*?  
} g0rdF  
} eQcy'GA06  
} uWx/V+w  
j2qDRI  
堆排序: '0H +2  
`!qWHm6I*  
package org.rut.util.algorithm.support; }O2hhh_  
(oq(-Wv  
import org.rut.util.algorithm.SortUtil; j V:U%  
UbC)X iO  
/** RK'3b/T  
* @author treeroot v6s8 p  
* @since 2006-2-2 hx)Ed  
* @version 1.0 '9auQ(2  
*/ ~Ufcy{x#  
public class HeapSort implements SortUtil.Sort{ v&H&+:<  
b44H2A .  
/* (non-Javadoc) . Nog.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wH|\;M{0V1  
*/ m\1*/6oV  
public void sort(int[] data) { ed{z^!w4  
MaxHeap h=new MaxHeap(); e{=7,DRH<  
h.init(data); LE1&atq  
for(int i=0;i h.remove(); bGK&W;Myk  
System.arraycopy(h.queue,1,data,0,data.length); U%gP2]t%cs  
}  V}8J&(\  
VrF]X#\)  
private static class MaxHeap{ >:OOuf#  
uAVV4)  
void init(int[] data){ |8+<qgQ  
this.queue=new int[data.length+1]; c0Q`S"o+  
for(int i=0;i queue[++size]=data; Ao{wd1  
fixUp(size); 1O(fI|gcO  
} XHN?pVZ7  
} ZR..>=  
H[-zQ#I9  
private int size=0; Z]9 )1&  
,0-   
private int[] queue; 2jx""{  
=@3Qsd  
public int get() { X+&@$v1  
return queue[1]; [W^6=7EO  
} SvI  
vja^ O  
public void remove() { CuuHRvU8  
SortUtil.swap(queue,1,size--); I9Z8]Q+2"  
fixDown(1); dr9I+c7u  
} $#KSvo{otI  
file://fixdown [;|g2\  
private void fixDown(int k) { bE0S) b)  
int j; ^~(bm$4r  
while ((j = k << 1) <= size) { -$e\m] }Z  
if (j < size %26amp;%26amp; queue[j] j++; jRgv 8n  
if (queue[k]>queue[j]) file://不用交换  #lJF$  
break; anl?4q3;9  
SortUtil.swap(queue,j,k); J3q}DDnEo  
k = j; Qz<v. _  
} N4HnW0  
} B623B HwS  
private void fixUp(int k) { jq}5(*k  
while (k > 1) { Q%t8cJ L  
int j = k >> 1; :=~([oSNW"  
if (queue[j]>queue[k]) Kx<bVK4"  
break; 0D.YO<PU  
SortUtil.swap(queue,j,k); 8dL(cC  
k = j; JNMZn/  
} 7&T1RB'>  
} NINyg"g<  
{H0B"i  
} 2Db[dk( ]  
.^Ek1fi.  
} Qz/=+A/4  
RYvS,hf 6z  
SortUtil: $e<3z6  
I^lb;3uR  
package org.rut.util.algorithm; !FO||z(vb  
$vc:u6I[  
import org.rut.util.algorithm.support.BubbleSort; >TtkG|/U-T  
import org.rut.util.algorithm.support.HeapSort; 53l9s <bOQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; F!SmCE(0x  
import org.rut.util.algorithm.support.ImprovedQuickSort; L TO1LAac  
import org.rut.util.algorithm.support.InsertSort; ^Z}INUv]7  
import org.rut.util.algorithm.support.MergeSort; 1[B?nk  
import org.rut.util.algorithm.support.QuickSort; W%Ky#!\-  
import org.rut.util.algorithm.support.SelectionSort; &LYU#$sj  
import org.rut.util.algorithm.support.ShellSort; ^iTjr$hQ;  
#M8"b]oh6  
/** )8e_<^M  
* @author treeroot .s, hl(w,  
* @since 2006-2-2 'MsxZqW"~  
* @version 1.0 0~^opNR  
*/ e `_ [+y  
public class SortUtil { j7uiZU;3Rx  
public final static int INSERT = 1; E#_}y}7JY  
public final static int BUBBLE = 2;  !@bN  
public final static int SELECTION = 3; 9~>;sjJk  
public final static int SHELL = 4;  8tPq5i  
public final static int QUICK = 5; #PtV=Ee1  
public final static int IMPROVED_QUICK = 6; +]*?J1 Y8Z  
public final static int MERGE = 7; +hK Qha!*  
public final static int IMPROVED_MERGE = 8; (MbI8B>  
public final static int HEAP = 9; WO_cT26Y  
w{Dk,9>w)  
public static void sort(int[] data) { yjN|PqtSV  
sort(data, IMPROVED_QUICK); A!@D }n  
} )/f,.Z$  
private static String[] name={ S{J$[!F  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Xt9?7J#\T  
}; rX fQ_  
hv7!x=?8  
private static Sort[] impl=new Sort[]{ knF *~O :y  
new InsertSort(), b ~v  
new BubbleSort(), .F}ZP0THnZ  
new SelectionSort(), }U+gJkY2  
new ShellSort(), [)9bR1wh  
new QuickSort(), DhkzVp_  
new ImprovedQuickSort(), zD2B hta y  
new MergeSort(), f,PFvT$5e  
new ImprovedMergeSort(), lusINILc  
new HeapSort() sa*]q~ a  
}; !L-.bve!  
UZ&bT'>;9g  
public static String toString(int algorithm){ Px'%5TKN  
return name[algorithm-1]; vNi7=3  
} _0^<)OSY  
sDWX} NV  
public static void sort(int[] data, int algorithm) { {"'W!WT b  
impl[algorithm-1].sort(data); MT;<\T  
} #). om*Xh  
lHz:Iibt  
public static interface Sort { *1}9`$  
public void sort(int[] data); a*74FVZo.;  
} Qe]@`Vg  
7P:0XML}  
public static void swap(int[] data, int i, int j) { z`5+BL,|ND  
int temp = data; vF3>nN(]  
data = data[j]; A3yVT8  
data[j] = temp; D OPOzh  
} XQ,I Ej|  
} &l{yEWA}g  
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