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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)L1H* S%  
插入排序: x+:zq<0|  
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package org.rut.util.algorithm.support; @a(oB.i  
784;]wdy\  
import org.rut.util.algorithm.SortUtil; RGp'b  
/** gp/YjUH7k8  
* @author treeroot n(R_#,Hs  
* @since 2006-2-2 w1i?# !|  
* @version 1.0 )eR$:uO  
*/ dtTlIhh1V  
public class InsertSort implements SortUtil.Sort{ ~6d5zI4\  
plXG[1;&G  
/* (non-Javadoc) .Dx2 ;lj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }cW#045es  
*/ T2|:nC)@  
public void sort(int[] data) { ML= z<u+  
int temp; ^:z7E1 ~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y iZx{5  
} ) b:4uK A  
} 5f_7&NxT  
} sN]Z #7  
rPO}6lsc  
} >EIrw$V$  
x'i0KF   
冒泡排序: #LWg"i  
wPH+n-&e  
package org.rut.util.algorithm.support; <25ccE9^c  
) ,Npv3(  
import org.rut.util.algorithm.SortUtil; ?Aw3lH#:  
Qlh?iA  
/** $G3@< BIN  
* @author treeroot f3n~{a,[  
* @since 2006-2-2 u[EK#%  
* @version 1.0 _FsB6 G]mc  
*/ EfKntrom[  
public class BubbleSort implements SortUtil.Sort{ j^ I!6j=ZX  
+-ewE-:|L  
/* (non-Javadoc) z!Hx @){|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8ds}+TtbY  
*/ )X%oXc&C|  
public void sort(int[] data) { P` ]ps?l  
int temp; \Tkp  
for(int i=0;i for(int j=data.length-1;j>i;j--){ PbEQkjE  
if(data[j] SortUtil.swap(data,j,j-1); }]GbUC!Zb  
} J6auUm` `  
} 4J}3,+  
} L[. <o{  
} rr )/`Kmv%  
u){S$</  
} ~U%j{8uH  
OG}KqG!n  
选择排序: ,`)OEI|1d  
kf K[u/<i  
package org.rut.util.algorithm.support; (9'be\  
Yb9cW\lr  
import org.rut.util.algorithm.SortUtil; Z s73 ad  
8A4TAT4,  
/** 3#mE( `|P  
* @author treeroot [gn[nP9  
* @since 2006-2-2 LG6I_[  
* @version 1.0 ]}~4J.Yn  
*/ EL +,jrU~  
public class SelectionSort implements SortUtil.Sort { |^!Vo&T  
/.@x 4cdS  
/* . s-5N\  
* (non-Javadoc) xB,/dMdTj  
* e5L 1er;6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iAHZ0Du  
*/ 2@ *<9-9  
public void sort(int[] data) { 6sy,A~e  
int temp; .hne)K%={y  
for (int i = 0; i < data.length; i++) { hgwn> p:S#  
int lowIndex = i; oG\>--  
for (int j = data.length - 1; j > i; j--) { K0 QH?F  
if (data[j] < data[lowIndex]) { +.K*n&  
lowIndex = j; %I}'Vb{C  
} >#?iO]).  
} Om6Mmoqh  
SortUtil.swap(data,i,lowIndex); D2$^"  
} 5p{25N_t  
} #G~wE*VR$  
RNe9h lr  
} Gym#b{#":  
ZQ|gt*  
Shell排序: `#p< rfe  
z L8J`W  
package org.rut.util.algorithm.support; X2{`l8%Ek  
QA,*:qx  
import org.rut.util.algorithm.SortUtil; q;No"_aAd  
Hh\ 4MNl  
/** MYu`c[$jZ  
* @author treeroot -)>(8f  
* @since 2006-2-2 '}CN?f|.  
* @version 1.0 4v>o%  
*/ 1VGpq-4*j  
public class ShellSort implements SortUtil.Sort{ 5Kee2s?*  
&t_A0z  
/* (non-Javadoc) ,zoB0([  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I}_;A<U  
*/ /} a_8iM\  
public void sort(int[] data) { OQ,}/  
for(int i=data.length/2;i>2;i/=2){ W[fT R?n  
for(int j=0;j insertSort(data,j,i); ZIe+  
} <OIUyZS  
} }1,'rm T  
insertSort(data,0,1); l-cW;b~  
} !YY 6o V  
{dBB{.hX  
/** C$t.C rxx  
* @param data uct=i1+ fE  
* @param j y]7%$* <  
* @param i jQ)L pjS1  
*/ U Q)!|@&  
private void insertSort(int[] data, int start, int inc) { R~$hWu}}  
int temp; &M$Bt} <  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); yYM_lobn  
} r(]98a]o~  
} _tA7=*@8  
} %6N)G!P  
S7Znz@  
} blUY.{NN3  
l\_x(BH  
快速排序: m^'~&!ba  
:q(D(mK  
package org.rut.util.algorithm.support; B_!wutV@  
'OG{*TDPu  
import org.rut.util.algorithm.SortUtil; JBvk)ogM  
>T`zh^+5W  
/** x ~wNO/  
* @author treeroot =pyVn_dg  
* @since 2006-2-2 CX]RtV!  
* @version 1.0 *!i,?vn  
*/ JV&Zwbu  
public class QuickSort implements SortUtil.Sort{ <r_3obRC  
p%tE v  
/* (non-Javadoc) Jb7iBQ2%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9uKOR7.zbo  
*/ D/e&7^iK  
public void sort(int[] data) { iQu^|,tHEM  
quickSort(data,0,data.length-1); |^ ?`Q.|c$  
} <>VID E  
private void quickSort(int[] data,int i,int j){ Qg[heND  
int pivotIndex=(i+j)/2; ?vMK'"  
file://swap /q T E  
SortUtil.swap(data,pivotIndex,j); b-2pzcK{#  
q)vK`\Y  
int k=partition(data,i-1,j,data[j]); )sRN!~  
SortUtil.swap(data,k,j); (v]P<3%  
if((k-i)>1) quickSort(data,i,k-1); U&`6&$]  
if((j-k)>1) quickSort(data,k+1,j); 5[nmP95YK  
YXgWH'i~  
} tc"T}huypU  
/** &ycjSBK  
* @param data 0T(O'v}.  
* @param i !X%S)VSMU  
* @param j ZTr:xX{R6  
* @return Wa(W&]  
*/ c$.UE  
private int partition(int[] data, int l, int r,int pivot) { 9z+vFk`  
do{ 0,:iE\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $|rCrak;  
SortUtil.swap(data,l,r); +I*k0"gj6  
} h] <GTWj  
while(l SortUtil.swap(data,l,r); *+NGi(N  
return l; eR7qE) h  
} ?0 HR(N(z!  
m\_+)eI|  
} L7X7Zt8%  
0K&_D)  
改进后的快速排序: >ze>Xr'm5=  
BHEs+ e0  
package org.rut.util.algorithm.support; 4A;[s m^f  
dUI3erO  
import org.rut.util.algorithm.SortUtil; Rk}\)r\  
MgHOj   
/** mluW=fE  
* @author treeroot p 7 , f6kG  
* @since 2006-2-2 [SK2x4  
* @version 1.0 ]gH wfqx  
*/ C\y[&egww  
public class ImprovedQuickSort implements SortUtil.Sort { 2=jd;2~  
kZJt ~}  
private static int MAX_STACK_SIZE=4096; 43+EX.c  
private static int THRESHOLD=10; f#*h^91x  
/* (non-Javadoc) ,NjX&A@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2j2mW>Z  
*/ Ga]47pQ"F  
public void sort(int[] data) { u9esdOv  
int[] stack=new int[MAX_STACK_SIZE]; `Q:de~+AM{  
H~~7~1"x  
int top=-1; {k kAqJ  
int pivot; lt }r}HM+  
int pivotIndex,l,r; -b@v0%Q2M*  
7ESN!  
stack[++top]=0; J>><o:~@  
stack[++top]=data.length-1; /TzNdIv  
%=laY_y G  
while(top>0){ 976E3u"Vt  
int j=stack[top--]; KX0<j  
int i=stack[top--]; mk#>Dpy?  
gmXy>{T  
pivotIndex=(i+j)/2; &B?@@ 6  
pivot=data[pivotIndex]; fx]\)0n  
[Bl $IfU  
SortUtil.swap(data,pivotIndex,j); _`TepX R  
1, m\Q_  
file://partition kJHr&=VO~  
l=i-1; U* -% M  
r=j; i6-wf Gs;  
do{ >L#];|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  aeEw#  
SortUtil.swap(data,l,r); OG0r4^6Ly  
} ^RYn8I  
while(l SortUtil.swap(data,l,r); lF0K=L  
SortUtil.swap(data,l,j); D."cQ<sxpN  
_{N0OX  
if((l-i)>THRESHOLD){ 9 yh9HE  
stack[++top]=i; N7d17c. 5  
stack[++top]=l-1; :({-0&&_  
} }rO?5  
if((j-l)>THRESHOLD){ yTzY?  
stack[++top]=l+1; q >Q:X3  
stack[++top]=j; k\sc }z8X  
} $KoPGgC[  
lc\>DH\n6  
} ;n% ]*v  
file://new InsertSort().sort(data); C!oS=qK?]  
insertSort(data); RY>)eGJ  
} >+yqjXRzm  
/** F% F c+?  
* @param data lt@  
*/ K<$wz/\  
private void insertSort(int[] data) { It#hp,@e  
int temp; !F=|*j  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &p/S>qKu#  
} :iP>z}h  
} SQ1M4:hP  
} M'pb8jf  
2#>$%[   
} A8=e?%  
[5>S-Z  
归并排序: $sU5=,  
0_YxZS\  
package org.rut.util.algorithm.support; BP)q6?Mz  
@5{.K/s  
import org.rut.util.algorithm.SortUtil; 1Z^`l6|2  
Ha46U6_'h  
/** J!21`M-Ue  
* @author treeroot i /O1vU#  
* @since 2006-2-2 [W^6u7~  
* @version 1.0 Y|{r vBKjf  
*/ -ET*M<  
public class MergeSort implements SortUtil.Sort{ $=e&q  
T0@](g  
/* (non-Javadoc) W?*Xy6",JF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aukk|/3Ih  
*/ w.4u=e >Z4  
public void sort(int[] data) { />dB%*  
int[] temp=new int[data.length]; r1[E{Tpz  
mergeSort(data,temp,0,data.length-1); tIn7(C  
} 3::3r}g  
-mev%lV  
private void mergeSort(int[] data,int[] temp,int l,int r){ c!'A)JD@  
int mid=(l+r)/2; )GiFkG  
if(l==r) return ; Y9IJ   
mergeSort(data,temp,l,mid); Cm,*bgX  
mergeSort(data,temp,mid+1,r);  ltCwns  
for(int i=l;i<=r;i++){ %8}WX@SB  
temp=data; ua]\xBWx  
} (SgEt  
int i1=l; \Dvl%:8   
int i2=mid+1; /0 B07B  
for(int cur=l;cur<=r;cur++){ W~XV  
if(i1==mid+1) D..{|29,:  
data[cur]=temp[i2++]; c,#~L7  
else if(i2>r) J~_L4* Jw  
data[cur]=temp[i1++]; nUI63?  
else if(temp[i1] data[cur]=temp[i1++]; Jcwh|w9D8  
else g|&.v2 '  
data[cur]=temp[i2++]; 9IS1.3  
} l _kg3e4  
} u4b3bH9U  
"e1{V8 4  
} jRv;D#Hp  
?~VWW<lR  
改进后的归并排序: B)j`}7O 06  
c]AKeq]  
package org.rut.util.algorithm.support; B$}wF<`k7  
8! |.H p  
import org.rut.util.algorithm.SortUtil; EmtDrx4!(f  
U~u6}s]:  
/** >:Rt>po8|w  
* @author treeroot z")3_5Br  
* @since 2006-2-2 p0}+071o%  
* @version 1.0 {#dp-5V  
*/ 8k+q7  
public class ImprovedMergeSort implements SortUtil.Sort { u%+6Mp[E  
jQ.>2-;H9  
private static final int THRESHOLD = 10; !uj!  
Lu8%qcC  
/* nhVK?  
* (non-Javadoc) &X#x9|=&O  
* .G5NGB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IEno.i\  
*/ Z`-)1!  
public void sort(int[] data) { ^F0k2pB  
int[] temp=new int[data.length]; d vg;  
mergeSort(data,temp,0,data.length-1); x*loACee.  
} GsP@ B'  
x*,q Rew  
private void mergeSort(int[] data, int[] temp, int l, int r) { Hm+6QgCs  
int i, j, k; ZXssvjWQV}  
int mid = (l + r) / 2; 4*N@=v  
if (l == r) bik] JIM  
return; dU sJv  
if ((mid - l) >= THRESHOLD) "xvV'&lQ  
mergeSort(data, temp, l, mid); sUyCAKebRr  
else 2-"Lxe65f  
insertSort(data, l, mid - l + 1); 3oppV_^JdT  
if ((r - mid) > THRESHOLD) /ctaAQDUh\  
mergeSort(data, temp, mid + 1, r); |?;"B:0  
else C;58z 5*,  
insertSort(data, mid + 1, r - mid); <eud#v  
Y5h)l<P>B  
for (i = l; i <= mid; i++) { ]HNT(w@  
temp = data; *7xQp!w^  
} >+A1 V[  
for (j = 1; j <= r - mid; j++) { N8DiEB3~  
temp[r - j + 1] = data[j + mid]; {Gk}3u/  
} E5Snl#Gl\0  
int a = temp[l]; Azq#}Oe)u  
int b = temp[r]; |k7ts&2  
for (i = l, j = r, k = l; k <= r; k++) { Q ^1#xBd  
if (a < b) { eu}:Wg2  
data[k] = temp[i++]; i h`y0(<  
a = temp; 7)8rc(58  
} else { np'M4^E;  
data[k] = temp[j--]; w{YtTZp3  
b = temp[j]; JL]k:i^`A  
} X_0{*!v8  
} oSu|Yn  
} y7;XOPm  
AXNszS%4  
/** +e\:C~2f28  
* @param data Q?Bj q>  
* @param l _Ssv:x c,  
* @param i %b-;Rn  
*/ U'sVs2sk6  
private void insertSort(int[] data, int start, int len) { 0f=N3)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); j-I6QUd  
} 4Rrw8Bw  
} `F- Dd4B  
} *FLTz(T  
} IJ #v"! D  
5JU(@}Db  
堆排序: X*>o9J45V  
\DcC1W  
package org.rut.util.algorithm.support; |j5A U  
T_oW)G  
import org.rut.util.algorithm.SortUtil; 654jS!  
; K)?:  
/** I).^,%>Z)  
* @author treeroot wEo-a< (  
* @since 2006-2-2 ]mO+<{{4X  
* @version 1.0  jKb=Zkd  
*/ 8&2gM  
public class HeapSort implements SortUtil.Sort{ _,K>u6N&  
H~_^w.P  
/* (non-Javadoc) RqX4ep5j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6M<mOhp@}n  
*/ R^u^y{ohr  
public void sort(int[] data) { sxC{\iLY%  
MaxHeap h=new MaxHeap(); S{"6PXzb  
h.init(data); @|\s$L  
for(int i=0;i h.remove(); gE6y&a  
System.arraycopy(h.queue,1,data,0,data.length); *NwKD:o  
} }07<(,0n  
!g8.8(/t)  
private static class MaxHeap{ i*cE  
AVevYbucB  
void init(int[] data){ 2fL88/'  
this.queue=new int[data.length+1]; I8-&.RE  
for(int i=0;i queue[++size]=data; QLpTz"H  
fixUp(size); d=+Lv<  
} /bNVgK`L5  
} w_z^5\u0  
a,0o{* (u$  
private int size=0; ?w5nKpG#RI  
)Ido|!]0d  
private int[] queue; si mX  
q2j}64o _S  
public int get() { B'BbTI,  
return queue[1]; }&C!^v o  
} HU'`kimWb  
[%)B%h`XGf  
public void remove() { KbuGf$Bv  
SortUtil.swap(queue,1,size--); gx>mKSzy  
fixDown(1); 2G:{FY  
} $RFu m'`5  
file://fixdown G/RheH G  
private void fixDown(int k) { <GFB'`L  
int j; KAZkVL  
while ((j = k << 1) <= size) { 7i|hlk;  
if (j < size %26amp;%26amp; queue[j] j++; Ci#5@Q9#w  
if (queue[k]>queue[j]) file://不用交换 S>ylAU;N  
break; .pu`\BW>  
SortUtil.swap(queue,j,k); Uf]Pd)D  
k = j; t+)GB=C  
} \tw#p k  
} koWb@V]  
private void fixUp(int k) { Y ,pS/  
while (k > 1) { Mb/6>  
int j = k >> 1; PJ11LE  
if (queue[j]>queue[k]) F0ivL`  
break; 9q ,Jq B  
SortUtil.swap(queue,j,k); |Nd. '|g,  
k = j; MIyLQ  
} v,.n/@s|X  
} 1.d9{LO[-  
MPEBinE?  
} Nxs%~ wZ   
ThQEQ6y  
} `zsk*W1GA  
\3Ald.EqtM  
SortUtil: @XG`D>%k  
+sbacMfq  
package org.rut.util.algorithm; ?28GQyk4  
\g[f4xAV  
import org.rut.util.algorithm.support.BubbleSort; b%~3+c  
import org.rut.util.algorithm.support.HeapSort; R\Ynn^w  
import org.rut.util.algorithm.support.ImprovedMergeSort; ?yM/j7Xn  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2'^OtM,  
import org.rut.util.algorithm.support.InsertSort; N4]6LA6x6  
import org.rut.util.algorithm.support.MergeSort; Zz*mf+  
import org.rut.util.algorithm.support.QuickSort; [6gHi.`p'  
import org.rut.util.algorithm.support.SelectionSort; %Ja{IWz9L  
import org.rut.util.algorithm.support.ShellSort; E,?aBRxy  
8Carg~T@  
/** @U.}Ei  
* @author treeroot m=l3O:~J  
* @since 2006-2-2 j 8AR#  
* @version 1.0 N{z(|2{A#  
*/ P:h4  
public class SortUtil { (Gk]<`d#N  
public final static int INSERT = 1; G@I_6c E  
public final static int BUBBLE = 2; T^H) lC#R  
public final static int SELECTION = 3; K[;,/:Y  
public final static int SHELL = 4; U[ O!&:6  
public final static int QUICK = 5; ^EBM;&;7  
public final static int IMPROVED_QUICK = 6; 3UtXxL&L`  
public final static int MERGE = 7; y?4=u,{C  
public final static int IMPROVED_MERGE = 8; Ecl7=-y  
public final static int HEAP = 9; " 7g8 d  
V'hz1roe  
public static void sort(int[] data) { !<^j!'2  
sort(data, IMPROVED_QUICK); @ DKl<F  
} TV>R(D3T/  
private static String[] name={ 8;BwzRtgT  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `TR9GWU+B  
}; "uER a(i  
O*Pe [T5x'  
private static Sort[] impl=new Sort[]{ R/FV'qy]  
new InsertSort(), Ytnr$*5.  
new BubbleSort(), Us~wv"L=UX  
new SelectionSort(), QS?9&+JM|  
new ShellSort(), mb6?$1j  
new QuickSort(), [goPmVe+  
new ImprovedQuickSort(), #"YWz)8  
new MergeSort(), -ddatc|  
new ImprovedMergeSort(), x=|@AFI  
new HeapSort() {j4:. fD  
}; w)SxwlW}  
_Ws k3AP  
public static String toString(int algorithm){ tJfN6  
return name[algorithm-1]; bD[W~ku  
} g#nsA(_L  
JM9Q]#'t  
public static void sort(int[] data, int algorithm) { -@?>nLQb  
impl[algorithm-1].sort(data); bN %MT#X  
} ) G&3V  
e7AI&5Eg{  
public static interface Sort { JV{!Ukuyp+  
public void sort(int[] data); t7%Bv+Uo  
} JKv4}bv  
n&{N't  
public static void swap(int[] data, int i, int j) { u"$HWB~@z  
int temp = data; %ycT}Lu  
data = data[j]; s"!}=k X  
data[j] = temp; (:k`wh&  
} ]-OkW.8d1  
} =U|SK"oO  
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