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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。 +#J,BKul  
插入排序: neF]=uCWnT  
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package org.rut.util.algorithm.support; &<'n^n  
N[|Nxm0z/C  
import org.rut.util.algorithm.SortUtil; `BFIC7a  
/** AN:@fZ  
* @author treeroot 6 &U+6gb  
* @since 2006-2-2 ?/*~;fM  
* @version 1.0 W1aa:hEf  
*/ lG<hlYckv  
public class InsertSort implements SortUtil.Sort{ >XW*T5aUA  
"I- w  
/* (non-Javadoc) E N^Uki`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Br>Fpe$q4  
*/ 'Yy&G\S  
public void sort(int[] data) { `'_m\uo  
int temp; 5 x2Ay=s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4pz|1Hw7  
} L *[K>iW  
} ({}(qm  
} c>bq%}  
cFd > oDS  
} O  OFVnu  
v`q\6i[-  
冒泡排序: {1 J&xoV"  
wt }9B[  
package org.rut.util.algorithm.support; _cDF{E+;  
eHg3}b2r  
import org.rut.util.algorithm.SortUtil; 6"j_iB  
cvsz%:Vs  
/** iP~,n8W  
* @author treeroot Zc& &[g  
* @since 2006-2-2 =wu*D5  
* @version 1.0 5 +9 Ze9  
*/ .] 4W!])9  
public class BubbleSort implements SortUtil.Sort{ ug 7o>PX  
U$&hZ_A  
/* (non-Javadoc) A^fjfa);V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t-%Q`V=[  
*/ (AY9oei>  
public void sort(int[] data) { ri~<~oB 2:  
int temp; i?;r7>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {C*\O)Gep  
if(data[j] SortUtil.swap(data,j,j-1); }$su4A@0  
} omZO+=8Q  
} 1pp -=$k  
} w&&2H8  
} J a,d3K  
C}g9'jY  
} lEL78l.  
\~rlgxd  
选择排序: !,$i6gm  
&FdWFt=X  
package org.rut.util.algorithm.support; uw\1b.r'B  
|BMV.Zi  
import org.rut.util.algorithm.SortUtil; 46jh-4) <  
iSK+GQ~  
/** hi =XYC,  
* @author treeroot H( -Y  
* @since 2006-2-2 }H:F< z*  
* @version 1.0 D?jk$^p~m#  
*/ _S0+;9fhY  
public class SelectionSort implements SortUtil.Sort { kW3E =pr  
H2gj=krK  
/* gv15t'y9  
* (non-Javadoc) P'@<:S|  
* C z#Z<:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]6Ug>>x5  
*/ \b8sG"G  
public void sort(int[] data) { 4] > ]-b  
int temp; eS/B24;*  
for (int i = 0; i < data.length; i++) { KP;(Q+qTx  
int lowIndex = i; pC,o2~%{  
for (int j = data.length - 1; j > i; j--) { PrQ?PvA<L  
if (data[j] < data[lowIndex]) { Y>."3*^  
lowIndex = j; Z]w# vLR  
} "tit\a6\(  
} f}c\_}(  
SortUtil.swap(data,i,lowIndex); zZ-wG  
} ?VU(Pq*`  
} R$kpiqK  
_GQz!YA  
} z(uZF3  
EUYCcL'G  
Shell排序:  oz'\q0  
ivgpS5 M`Y  
package org.rut.util.algorithm.support; B DY}*cX  
Bc-yxjsw  
import org.rut.util.algorithm.SortUtil; .ujT!{>v/  
rtJl _0`  
/** `pZs T ^G[  
* @author treeroot W_O)~u8  
* @since 2006-2-2 G}@#u9  
* @version 1.0 5M]z5}n/  
*/ !;@_VWR  
public class ShellSort implements SortUtil.Sort{ .UCt|> $  
"bg'@:4F  
/* (non-Javadoc) s}&bJ"!Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~wnOV#v  
*/ d &cU*  
public void sort(int[] data) { ^_I} x)i*@  
for(int i=data.length/2;i>2;i/=2){ R`Aj|C z  
for(int j=0;j insertSort(data,j,i); kpwt]]e*  
} ub0zJTFJ#  
} *x~xWg9^  
insertSort(data,0,1); >e5 *prx+  
} (LvS :?T}  
gMWBu~;!  
/** `?*%$>W#"  
* @param data j83? m  
* @param j &WXY'A=  
* @param i bo"%0 ?3n  
*/ >>l`,+y  
private void insertSort(int[] data, int start, int inc) { n6WY&1ZE~  
int temp; =M6[URZ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ymY1o$qWB}  
} LVIAF0kX  
} MOn,Db$  
} 3>ex5  
{P9J8@D  
} 4!62/df  
-kz4FS  
快速排序: djQv[Vc {  
)'4P.>!!aQ  
package org.rut.util.algorithm.support; QR?yG+VU  
%U7.7dSOI;  
import org.rut.util.algorithm.SortUtil; _Jz8{` "  
4PLk  
/** l@j.hTO<  
* @author treeroot $aCd/&  
* @since 2006-2-2 i LBvGZ<9  
* @version 1.0 g3n'aD@'x  
*/ :pX`?Ew`g  
public class QuickSort implements SortUtil.Sort{ 2N#$X'8  
# M, 7  
/* (non-Javadoc) ~na!@<zB{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N(6|yZ<J3M  
*/ Th[f9H%  
public void sort(int[] data) { V~DMtB7  
quickSort(data,0,data.length-1); &ad I (s~  
} 5FVndMM#y  
private void quickSort(int[] data,int i,int j){ MvLs%GE%  
int pivotIndex=(i+j)/2; vD/NgRBww  
file://swap  @4d)R  
SortUtil.swap(data,pivotIndex,j); :,;K>l^U  
qL6c`(0  
int k=partition(data,i-1,j,data[j]); B0$:b !  
SortUtil.swap(data,k,j); A,-6|&F  
if((k-i)>1) quickSort(data,i,k-1); ]=rht9),"  
if((j-k)>1) quickSort(data,k+1,j); K`&oC8p  
WtQ8X|\`  
} v`J*ixZ7t  
/** e:E0"<  
* @param data @}_WE,r  
* @param i ~I/@i  
* @param j v$~QCtc  
* @return exh/CK4;  
*/ \]Kh[z0"  
private int partition(int[] data, int l, int r,int pivot) { wHZW `  
do{ e+v({^k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~"pKe~h   
SortUtil.swap(data,l,r); %98' @$:0  
} ;Mm7n12z C  
while(l SortUtil.swap(data,l,r); -m'j]1  
return l; k$ 5 s{q  
} I jr\5FA[p  
ZN"j%E{d  
} =4uSFK_L  
rWys'uc  
改进后的快速排序: ]A FI\$qB\  
4p%A8%/q  
package org.rut.util.algorithm.support; HCK|~k  
QY/hI `  
import org.rut.util.algorithm.SortUtil; Z UKf`m[  
4%WzIzRb  
/** mOo`ZcTU  
* @author treeroot YDC mI@  
* @since 2006-2-2 A,i75kd  
* @version 1.0 {NpM.;  
*/ `&0Wv0D0  
public class ImprovedQuickSort implements SortUtil.Sort { j Ja$a [  
PFUO8>!pA\  
private static int MAX_STACK_SIZE=4096; 8eA+d5k\.  
private static int THRESHOLD=10; PcB_oG g  
/* (non-Javadoc) Iff9'TE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~HQ9i%exg  
*/ pEECHk  
public void sort(int[] data) { HM>lg`S  
int[] stack=new int[MAX_STACK_SIZE]; 9a'-Y  
R.7:3h  
int top=-1; (E,T#uc{  
int pivot; y@CHR  
int pivotIndex,l,r; 5cx#SD&5/  
e1//4H::t  
stack[++top]=0; at2FmBdu C  
stack[++top]=data.length-1; **69rN  
zy*/T>{#  
while(top>0){ l & Dxg  
int j=stack[top--]; B|o2K}%f  
int i=stack[top--]; a^,(v  
^ 9!!;)  
pivotIndex=(i+j)/2; 04r$>#E  
pivot=data[pivotIndex]; 4k./(f2+  
`y#UJYXQE  
SortUtil.swap(data,pivotIndex,j); =4d (b ;  
Bc3:}+l  
file://partition q7u'_ R,;  
l=i-1; = k\J<  
r=j; IK*07h/!  
do{ H@]MXP[_  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /VG2.:  
SortUtil.swap(data,l,r); G[jW<'f  
} Z"unF9`"1  
while(l SortUtil.swap(data,l,r); ;c$J=h]  
SortUtil.swap(data,l,j); qZ@s#UiB  
g+X}c/" .  
if((l-i)>THRESHOLD){ FVh U^  
stack[++top]=i; 4&l10fR5  
stack[++top]=l-1; ^n0]dizB  
} s&'QN=A  
if((j-l)>THRESHOLD){ >:lnt /N3  
stack[++top]=l+1; Jmx Ko+-  
stack[++top]=j; S*yjee<@  
} v%Wx4v@%SE  
s(W|f|R  
} y(K" -?  
file://new InsertSort().sort(data); O$4yAaD X  
insertSort(data); rj!0GI  
} 4j)tfhwd8  
/** o.I6ulY8  
* @param data *2jK#9"MP  
*/ v0L\0&+  
private void insertSort(int[] data) { @IXsy  
int temp; 7g3 >jh  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $ MC)}l  
} 4>J   
} .9.2Be  
} u]OW8rc  
=FD;~  
} +@r*}  
71{p+3Z&  
归并排序: )sT> i  
J.| +ID+  
package org.rut.util.algorithm.support; @|tL8?  
jt.3P  
import org.rut.util.algorithm.SortUtil; >orK';r<  
]i)j3 WDz]  
/** H_QsNf  
* @author treeroot 5;{H&O9Q  
* @since 2006-2-2 @n": w2^B  
* @version 1.0 "T- `$'9  
*/ X<*U.=r)  
public class MergeSort implements SortUtil.Sort{ Zg.&V  
_ :VB}>  
/* (non-Javadoc) :*2ud(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d09k5$=gJ  
*/ >MvDVPi~+  
public void sort(int[] data) { *~x/=.}  
int[] temp=new int[data.length]; )d>!"JB-  
mergeSort(data,temp,0,data.length-1); RnDt)3  
} Y(cGk#0  
:EA\)@^$R  
private void mergeSort(int[] data,int[] temp,int l,int r){ `kJ^zw+  
int mid=(l+r)/2; I'0@viF"Nx  
if(l==r) return ; aX}P|l  
mergeSort(data,temp,l,mid); 8M`#pN^  
mergeSort(data,temp,mid+1,r); QhK#Y{xY  
for(int i=l;i<=r;i++){ ..R-Ms)k=  
temp=data; q+vx_4  
} AD<q%pu&H?  
int i1=l; 1wP-  
int i2=mid+1; ,5*eX  
for(int cur=l;cur<=r;cur++){ ^:Gie  
if(i1==mid+1) E0?iXSJ  
data[cur]=temp[i2++]; a)'5Nw9*  
else if(i2>r) UTH_^HAN#G  
data[cur]=temp[i1++]; 4sT88lG4n  
else if(temp[i1] data[cur]=temp[i1++]; !f+H,]D"  
else oczN5YSt  
data[cur]=temp[i2++]; C-H@8p?T  
} `u&Zrdr,  
} gjAIEI  
ixT:)|'i  
} )}?#  
B,=H@[Fj  
改进后的归并排序: /x1![$oC0  
&mtJRfnu  
package org.rut.util.algorithm.support; HI11Jl}{  
=^5Alb a/  
import org.rut.util.algorithm.SortUtil; KW^7H  
9AJ7h9L  
/** q*7VqB  
* @author treeroot -#HA"7XOE  
* @since 2006-2-2 ]@Uq=?%  
* @version 1.0 |VNnOM  
*/ nPy$D-L,  
public class ImprovedMergeSort implements SortUtil.Sort { _<OSqE  
vG"=h%  
private static final int THRESHOLD = 10; uD @#  
DS[#|  
/* n@,G8=J?  
* (non-Javadoc) e8#h3lxJ`  
* x}8yXE"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L|}lccpI  
*/ \hEN4V[  
public void sort(int[] data) { o_^?n[4  
int[] temp=new int[data.length]; J\M>33zu  
mergeSort(data,temp,0,data.length-1); 7*Ej. HK  
}  VN\W]jT  
aN8|J?JH  
private void mergeSort(int[] data, int[] temp, int l, int r) { DuHu\>f<S  
int i, j, k; ?qWfup\S  
int mid = (l + r) / 2; l.NEkAYPmH  
if (l == r) L$E{ycn  
return; 8Hn|cf0  
if ((mid - l) >= THRESHOLD) #kaY0M  
mergeSort(data, temp, l, mid); T, )__h  
else 428>BQA  
insertSort(data, l, mid - l + 1); |='z{WS  
if ((r - mid) > THRESHOLD) z-.+x3&o @  
mergeSort(data, temp, mid + 1, r); 6U R2IxbE  
else [c|]f_ZdK  
insertSort(data, mid + 1, r - mid); +w{*Xk)4  
\S! e![L/  
for (i = l; i <= mid; i++) { wlqpn(XR  
temp = data; esMX-.8Cx  
} ap+JQ@b  
for (j = 1; j <= r - mid; j++) { Z*= $8 e@  
temp[r - j + 1] = data[j + mid]; x?2@9u8Yb  
} R&BTA  
int a = temp[l]; L'0B$6  
int b = temp[r]; OZ~5*v  
for (i = l, j = r, k = l; k <= r; k++) { %~E ?Z!_W  
if (a < b) { UZJCvfi  
data[k] = temp[i++]; \Yc'~2n  
a = temp; 0,89H4  
} else { V#S9H!hm$  
data[k] = temp[j--]; \(^nSy&N  
b = temp[j]; 5a|w+HO,  
} h1B16)  
} r[b(I@T +  
} SfaQvstN  
$4 S@  
/** [nrYpb4  
* @param data G?;e-OhV  
* @param l f-`)^5E  
* @param i 6MT1$7|P&x  
*/ Z:sg}  
private void insertSort(int[] data, int start, int len) { YH\OFg@7  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )\J+Kiy)  
} 1Y7Eajt-5  
} %R}.#,Suo  
} JS CZ{v J$  
} P;qN(2L/=<  
q#,f 4P  
堆排序: 7G}2,ueI  
Y6zbo  
package org.rut.util.algorithm.support; IJ(  
8{^WY7.'  
import org.rut.util.algorithm.SortUtil; %)/P^9I6  
;kS&A(  
/** ~&7MkkftM  
* @author treeroot 06c>$1-?  
* @since 2006-2-2 O Hb[qX\  
* @version 1.0 pgQV/6  
*/ 4GY[7^  
public class HeapSort implements SortUtil.Sort{ 4'a=pnE$  
XF;ES3 d  
/* (non-Javadoc) Of[XKFn_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3TY5;6  
*/ l0PZ`m+;j  
public void sort(int[] data) { uj R_"r|l  
MaxHeap h=new MaxHeap(); JNt^ (z  
h.init(data); r0+6evU2  
for(int i=0;i h.remove(); 6/r)y+H  
System.arraycopy(h.queue,1,data,0,data.length); +#lM  
} ^h ~x)@=  
=F]FP5V  
private static class MaxHeap{ 7Z\--=;|[:  
kt["m.  
void init(int[] data){ hRrn$BdLX  
this.queue=new int[data.length+1]; XINu=N(g  
for(int i=0;i queue[++size]=data; g1W.mAA3B  
fixUp(size); #><.oreXq  
} V-Sd[  
} D(AXk8Vub  
C/vI EYG4  
private int size=0; AGQ#$fh>7=  
%S*{9hm/  
private int[] queue; 'rO!AcdLU  
WaVtfg$!  
public int get() { V'8s8H  
return queue[1]; <SgM@0m  
} &]v4@%<J  
vY${;#~|  
public void remove() { R`DKu=  
SortUtil.swap(queue,1,size--); Nn~~!q  
fixDown(1); jr /pj?  
} x7:s]<kE  
file://fixdown C)@y5. G;  
private void fixDown(int k) { a!< 8\vzg  
int j; %)|9E>fP]N  
while ((j = k << 1) <= size) { b F"G[pD  
if (j < size %26amp;%26amp; queue[j] j++; %,6#2X nX%  
if (queue[k]>queue[j]) file://不用交换 Sa?ksD2IaB  
break; g*e   
SortUtil.swap(queue,j,k); 7hlO#PYZ  
k = j; Jq&uF*!  
} i|w81p^o  
} (e!0]Io@  
private void fixUp(int k) { }Qip&IN  
while (k > 1) { JEahGzO  
int j = k >> 1; F+ ,~v-  
if (queue[j]>queue[k]) } z _  
break; "$ Y_UJT7  
SortUtil.swap(queue,j,k); jkiFLtB@V  
k = j; bx{$Y_L+p  
} w)kNkD  
} 5NS[dQG5  
2 Ga7$q  
} 2ORNi,_I  
Z~oo;xE  
} Z&1T  
P9^-6;'Y  
SortUtil: 0- HqPdjR  
i'H/ZwU  
package org.rut.util.algorithm; n>+mL"hs  
ryW'Z{+r'  
import org.rut.util.algorithm.support.BubbleSort; Hv sob  
import org.rut.util.algorithm.support.HeapSort; &]e'KdXF  
import org.rut.util.algorithm.support.ImprovedMergeSort; "?ucO4d  
import org.rut.util.algorithm.support.ImprovedQuickSort; !;i`PPRwk  
import org.rut.util.algorithm.support.InsertSort; Ox&P}P0f  
import org.rut.util.algorithm.support.MergeSort; 8+a4>8[M  
import org.rut.util.algorithm.support.QuickSort; s \;"X  
import org.rut.util.algorithm.support.SelectionSort; \6E|pbJ}x  
import org.rut.util.algorithm.support.ShellSort; !sDh4jQ`  
^?0DP >XA  
/** PP;}e  
* @author treeroot +BVym~*^  
* @since 2006-2-2 zLD0RBj7p  
* @version 1.0 T (OW  
*/ k7?N ?7w  
public class SortUtil { }.3nthgz  
public final static int INSERT = 1; 1|kvPo#  
public final static int BUBBLE = 2; ;1`fC@rI  
public final static int SELECTION = 3; sYe?M,  
public final static int SHELL = 4; R< ,`[*Z  
public final static int QUICK = 5; -8eoNzut  
public final static int IMPROVED_QUICK = 6; -=)+dCyB^  
public final static int MERGE = 7; E*.{=W }C  
public final static int IMPROVED_MERGE = 8; e,F1Xi #d  
public final static int HEAP = 9; #MX'^RZ>2  
=|M>l  
public static void sort(int[] data) { ,Sq/y~  
sort(data, IMPROVED_QUICK); ohFJZ'  
} F~%]6^$w  
private static String[] name={ [Sr,h0h6  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,uo'c_f(e  
}; ?EJD?,}  
GN ]cDik  
private static Sort[] impl=new Sort[]{ ]ndvt[4L  
new InsertSort(), _hRcc"MS`  
new BubbleSort(), f!oT65Vmi  
new SelectionSort(), %+8F'&X  
new ShellSort(), P_?gq>E8  
new QuickSort(), ';TT4$(m  
new ImprovedQuickSort(), b8V~S'6VqO  
new MergeSort(), GNXHM*~  
new ImprovedMergeSort(), lG4H:[5V  
new HeapSort() tw^,G(  
}; :`-,Lbg  
u.mJQDTH  
public static String toString(int algorithm){ jNLw=  
return name[algorithm-1]; YVYu:}e3)  
} $}J5xG,}$  
}Mf!-g  
public static void sort(int[] data, int algorithm) { BGOuDKz9C  
impl[algorithm-1].sort(data); v1BDP<qU2  
} jT8#C=a7  
wF <n=  
public static interface Sort { biSz?DJ>  
public void sort(int[] data); MaRi+3F  
} zo+nq%=  
~%^ tB  
public static void swap(int[] data, int i, int j) { bu:S:`  
int temp = data; +?u~APjNN  
data = data[j]; ::ajlRZG  
data[j] = temp; PJ]];MQ  
} Y' %^NP}o  
} )Y2{_ bx4"  
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