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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。 q"_QQ~  
插入排序: Zj4Uak  
GowH]MO  
package org.rut.util.algorithm.support; [PKR2UEe]  
dAe')N:KPI  
import org.rut.util.algorithm.SortUtil; H 7 ^/q7  
/** ~< x:q6  
* @author treeroot y18Y:)DkL  
* @since 2006-2-2 6\S~P/PkE  
* @version 1.0 9]@!S|1  
*/ NW)1#]gg%  
public class InsertSort implements SortUtil.Sort{ gv{ >`AN  
j 1HW._G  
/* (non-Javadoc) ^y4Z+Gu[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /|&*QLy  
*/ kz7(Z'pw  
public void sort(int[] data) { 4I5Y,g{6+  
int temp; Ld-_,-n  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IdxzE_@  
} W'TaBuCb  
} pcI uN  
} ]"1DGg \A  
9 JK Ew  
} bK-N:8Z  
maR"t+  
冒泡排序: cPc</[x[W  
_n\GNUA  
package org.rut.util.algorithm.support; 5QO9Q]I#_\  
~.lPEA %%  
import org.rut.util.algorithm.SortUtil; _oDz-  
vgN&K@hJ  
/** !FFU=f  
* @author treeroot @!d{bQd,  
* @since 2006-2-2 *G 9V'9  
* @version 1.0 ef E.&]  
*/ $]2vvr  
public class BubbleSort implements SortUtil.Sort{ :S(ZzY Q  
"G9xMffW  
/* (non-Javadoc) ?#Q #u|~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F^fdIZx  
*/ 2T[9f;jM'  
public void sort(int[] data) { ;mKb]  
int temp; ZWp(GC1NA  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1 I",L&S1  
if(data[j] SortUtil.swap(data,j,j-1); {P#|zp4C{  
} &Z|P2dI  
} CQDkFQq-dq  
} -1ub^feJ,  
} 57'4ljvYi  
sds"%]r g  
} QoH6  
t#eTV@-  
选择排序: !m?-!:  
d9|<@A  
package org.rut.util.algorithm.support; 3|Xyl`i4o  
tcog'nAz  
import org.rut.util.algorithm.SortUtil; }?v )N).kW  
Z>#i**  
/** 2Q:+_v  
* @author treeroot k~FRD?[u  
* @since 2006-2-2 _``=cc  
* @version 1.0 ^@NU}S):yN  
*/ k2UVm$}u  
public class SelectionSort implements SortUtil.Sort { F`]2O:[  
_ZkI)o  
/* Y% 5eZ=z  
* (non-Javadoc) ZO$%[ftb  
* jsi!fx2Rm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "|KP'<8%  
*/ w_u\sSQ`!  
public void sort(int[] data) { OJy#w{4  
int temp; kX2rp?{  
for (int i = 0; i < data.length; i++) { CF5`-wj/#  
int lowIndex = i; @cB$iP=Z4  
for (int j = data.length - 1; j > i; j--) { ~z;FP$U  
if (data[j] < data[lowIndex]) { O463I.XAP  
lowIndex = j; -v|qZ'  
} zjoq6  
} e6RPIg  
SortUtil.swap(data,i,lowIndex); Qv/=&_6  
} *<ewS8f*6  
} *$ %a:q1U  
UByv?KZi  
} cDH^\-z  
qPfQy  
Shell排序: lQkQ9##*   
2x0<&Xy#P  
package org.rut.util.algorithm.support; hODWB&b  
'Ne@e)s9  
import org.rut.util.algorithm.SortUtil; 1c{DY  
aPbE;" f  
/** Q^txVUL  
* @author treeroot dL )<% o  
* @since 2006-2-2 l8#EM1g-  
* @version 1.0 ]f9Cx\d:k  
*/ `$ aZ0+  
public class ShellSort implements SortUtil.Sort{ WbqWG^W  
d)f :)Ew  
/* (non-Javadoc) ,]c 1A$Sr0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Aj+F |l  
*/ 1 Nd2{(  
public void sort(int[] data) { 7g}w+p>  
for(int i=data.length/2;i>2;i/=2){ gQ1;],_  
for(int j=0;j insertSort(data,j,i); t" Z6[XG  
} :${HQd+  
} zu|\fP  
insertSort(data,0,1); (n9g kO&8"  
} `~CQU  
HJYScwjQ;`  
/** ]1pIj i[  
* @param data 3fQuoQuD"}  
* @param j Dy8r 9  
* @param i cY.bO/&l  
*/ ><HE;cVg?  
private void insertSort(int[] data, int start, int inc) { l}sjD[2  
int temp; K1!j fp  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ax5<#3__  
} ur7q [n  
} G?/DrnK:  
} _D(rI#q  
2u*KM`fa`  
} LvUj9eVb/L  
rFYWs6  
快速排序: _&ks1cw  
"y/?WQ>,3  
package org.rut.util.algorithm.support; 7CTFOAx#  
qE3UO<FA  
import org.rut.util.algorithm.SortUtil; %m$Sp47  
?|B&M\}g  
/** a8Nh=^Py  
* @author treeroot  o.\F.C$  
* @since 2006-2-2 N `F~n%N  
* @version 1.0 7X'u6$i  
*/ XaPV9 4  
public class QuickSort implements SortUtil.Sort{ >y:,9;  
l u%}h7ng  
/* (non-Javadoc) 9kS^Abtk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &t:Gx<]  
*/ FNY8tv*/x  
public void sort(int[] data) { b9<#K+L-  
quickSort(data,0,data.length-1); t$#jL5  
} vJOw]cwq  
private void quickSort(int[] data,int i,int j){ XtSkh] #z!  
int pivotIndex=(i+j)/2; uurh??R  
file://swap !6>~?gNd  
SortUtil.swap(data,pivotIndex,j); Hm'=aff6A  
O]Qd<%V'x  
int k=partition(data,i-1,j,data[j]); =\:qo'l  
SortUtil.swap(data,k,j); en*GM}<V  
if((k-i)>1) quickSort(data,i,k-1); G`BU=Fi  
if((j-k)>1) quickSort(data,k+1,j); JB]q   
ia E^a^*  
} H{?vbqQ  
/** g0Gf6o>2  
* @param data 0Bi.6r  
* @param i  e5*hE  
* @param j OL,TFLn4  
* @return ^qQZT]  
*/ |My4SoOF  
private int partition(int[] data, int l, int r,int pivot) { \k!{uRy'  
do{ !SdSE^lz`  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x$Oq0d{T  
SortUtil.swap(data,l,r); n!xt5=x P{  
} /Uy"M:|V1  
while(l SortUtil.swap(data,l,r); 9}F*P669f  
return l; e:n<EnT  
} T@&K- UQ  
Rww{:R  
} w\i\Wp,FP  
P&ptJtNg  
改进后的快速排序: RM]M@%,K  
B s#hr3h-  
package org.rut.util.algorithm.support; .|b$NM  
K<ft2anY5  
import org.rut.util.algorithm.SortUtil; 4\u1TYR  
*XbEiMJ  
/** wL 4dTc  
* @author treeroot Mh/dpb\Z  
* @since 2006-2-2 *<jAiB ,O*  
* @version 1.0 Q1 $^v0-)  
*/ {NFr]LGOp  
public class ImprovedQuickSort implements SortUtil.Sort { @ljA  
_ff`y  
private static int MAX_STACK_SIZE=4096; nR}sNl1  
private static int THRESHOLD=10; 5l2 ?  
/* (non-Javadoc) IIF] /Ek]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 92x(u%~E  
*/ hYNY"VB  
public void sort(int[] data) { k_5L4c:"  
int[] stack=new int[MAX_STACK_SIZE]; q?DTMKx  
v}O30wE  
int top=-1; 'o+L41  
int pivot; ^l=!JP=M=  
int pivotIndex,l,r; 4N zwE(  
-$jEfi4I  
stack[++top]=0; W~~7 C,!  
stack[++top]=data.length-1; ;HJLs2bP  
W=Mb  
while(top>0){ v)l8@.  
int j=stack[top--];  6S*e xw  
int i=stack[top--]; ?DQsc9y  
2s&*  
pivotIndex=(i+j)/2; J^}V|#  
pivot=data[pivotIndex]; +)<wDDC_  
wKY Za# u  
SortUtil.swap(data,pivotIndex,j); KB`!Sj\  
q6SXWT'Sa  
file://partition MVTMwwO\[  
l=i-1; IE&!YP(U(  
r=j; Vp*KfS]  
do{ F6OpN "UM'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); m)v"3ib  
SortUtil.swap(data,l,r); Nj xoTLI  
} Ba*,-i3ZK  
while(l SortUtil.swap(data,l,r); m4&h>9. 8  
SortUtil.swap(data,l,j); gL[yA?GoM  
"2P&X  
if((l-i)>THRESHOLD){ WEQ1 Seq  
stack[++top]=i; +HeTtFo{M  
stack[++top]=l-1; /F-qP.<D,r  
} ,5kKimTt  
if((j-l)>THRESHOLD){ 7;sj%U^'l  
stack[++top]=l+1; bRJMYs  
stack[++top]=j; 1+qw$T  
} t2"O  
qnJt5  
} ?NR A:t(}  
file://new InsertSort().sort(data); wF,UE _  
insertSort(data); D 38$`j  
} Y/ >&0wj)d  
/** X4AyX.p  
* @param data ZP *q4:  
*/ sCis4gX.]  
private void insertSort(int[] data) { )5%'.P>  
int temp; 'EF9Zt8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5b/|!{  
} lB4GU y$  
} TRQF^P3o  
} 0]=i}wL 8  
8x8 uo  
} V9( @Y  
v:o({Y 1Aq  
归并排序: X*39c b(b  
ng:9 l3 x  
package org.rut.util.algorithm.support; ph[#QHB  
wS+ ^K  
import org.rut.util.algorithm.SortUtil; /X(t1+  
OCJnjlV%  
/** WObvbaK  
* @author treeroot ]2'na?q9  
* @since 2006-2-2 t!x5fNo)  
* @version 1.0 y[\VUzD*'  
*/ m&\h4$[kql  
public class MergeSort implements SortUtil.Sort{ l>{R`BZ/  
}i`PGx  
/* (non-Javadoc) {Jx4xpvPo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gu<'QV"  
*/ ("+}=*?OF3  
public void sort(int[] data) { kc @[9eV  
int[] temp=new int[data.length]; zG9Y!SY\-  
mergeSort(data,temp,0,data.length-1); !n$tr  
} AvSM ^  
.J.-Mm` .  
private void mergeSort(int[] data,int[] temp,int l,int r){ I1\a[Xe8E  
int mid=(l+r)/2; Z@&Dki  
if(l==r) return ; Ucm :S-  
mergeSort(data,temp,l,mid); Nwt" \3  
mergeSort(data,temp,mid+1,r); Bj}^\Pc;}  
for(int i=l;i<=r;i++){ {>,V\J0p  
temp=data; + 33@?fl.  
} %Gj8F4{  
int i1=l; '|*?*6q  
int i2=mid+1; Yd=a}T  
for(int cur=l;cur<=r;cur++){ 9^Whg ~{  
if(i1==mid+1) >teO m?@U  
data[cur]=temp[i2++]; \ZhfgE8{%  
else if(i2>r) ~r$jza~o(  
data[cur]=temp[i1++]; ]Xf% ,iu  
else if(temp[i1] data[cur]=temp[i1++]; @` Eg(  
else XC "'Q+  
data[cur]=temp[i2++]; .YnFH$;$  
} _~tEw.fM5  
} 0=q;@OIf  
f=!VsR2o  
} {g~bQ2wDC  
uN^=<B?B  
改进后的归并排序: S h,&{z!  
'd&0Js$^  
package org.rut.util.algorithm.support; \nB8WSvk2W  
4jBC9b}O  
import org.rut.util.algorithm.SortUtil; <~!Hx+j   
eKz?"g/j  
/** Ck@J,~x1D  
* @author treeroot HJ[/|NZU$  
* @since 2006-2-2 Cc<,z*T  
* @version 1.0 f1)x5N  
*/ "+ >SJ~  
public class ImprovedMergeSort implements SortUtil.Sort { qYf |Gv  
g'u?Rn 7*J  
private static final int THRESHOLD = 10; PN<C=gAe  
RZ7( J  
/* 7kK #\dI  
* (non-Javadoc) #gaQaUjR  
* P"?FnTbv[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3 M10fI?  
*/ #E+gXan  
public void sort(int[] data) { 2gjGeM  
int[] temp=new int[data.length]; ^o@,3__7Q  
mergeSort(data,temp,0,data.length-1); W$o2 7f  
} 9cx =@  
m6yIR6H  
private void mergeSort(int[] data, int[] temp, int l, int r) { ',4x$qe  
int i, j, k; |U k" {  
int mid = (l + r) / 2; 6PF8 /@Nh  
if (l == r) 9F- )r'  
return; y}K\%;`[a  
if ((mid - l) >= THRESHOLD) /?6|&  
mergeSort(data, temp, l, mid); \WrFqm#  
else 0\~Z5k`IT  
insertSort(data, l, mid - l + 1); J.+BD\pa  
if ((r - mid) > THRESHOLD) 4E[!,zvl  
mergeSort(data, temp, mid + 1, r); $ RwB_F  
else q7m6&2$[  
insertSort(data, mid + 1, r - mid); $BDBN_p  
vN OH&ja-s  
for (i = l; i <= mid; i++) { 0Hw-59MK  
temp = data; #Hh^3N  
} W*:,m8wk  
for (j = 1; j <= r - mid; j++) { 's!-80sd  
temp[r - j + 1] = data[j + mid]; \#x}q'BC4  
} @l(vYJ:f  
int a = temp[l]; ` C+HE$B  
int b = temp[r]; O0*e)i8  
for (i = l, j = r, k = l; k <= r; k++) { Hv<'dt$|  
if (a < b) {  `}no9$l~  
data[k] = temp[i++]; Hj1 EGCA  
a = temp; 7ji=E";.w  
} else { _0 snAt^iC  
data[k] = temp[j--]; >(tn"2  
b = temp[j]; B)h>8 {  
} X0+fsf<H}  
} 7W9d6i)  
} 0i8h I6d  
oXt,e   
/** >Dg#9  
* @param data =`C4qC _  
* @param l DV]7.Bm  
* @param i l??;3kh1  
*/ UU}7U]9u  
private void insertSort(int[] data, int start, int len) { .`Zf}[5[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <;t)6:N\  
} I#FF*@oeM  
} ftavbNR`W  
} n1:v HBM@\  
} -,":5V26  
i"^<CR@e  
堆排序: ;;gK@?hJ  
c| ' w  
package org.rut.util.algorithm.support; }GnwY97  
:H[\;Z1_  
import org.rut.util.algorithm.SortUtil; f.pkQe(  
`Xc irfp  
/**  QI!i  
* @author treeroot #S+Z$DQD  
* @since 2006-2-2 L8vOBI7N  
* @version 1.0 m^\TUj  
*/ 4`2$_T$ F  
public class HeapSort implements SortUtil.Sort{ 4DO/rtkVq  
K,}w]b  
/* (non-Javadoc) [H"#7t.V-~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EZ(^~k=I  
*/ }Ewo_P&`  
public void sort(int[] data) { L$Z(+6m5  
MaxHeap h=new MaxHeap(); qMS}t3X  
h.init(data); 2+9 2Q_+  
for(int i=0;i h.remove(); jlKGXD)Q[  
System.arraycopy(h.queue,1,data,0,data.length); /k"hH\Pp  
} 2 6:evid  
JFqf;3R  
private static class MaxHeap{ L,-u.vV  
.)8   
void init(int[] data){ Q)Dwq?  
this.queue=new int[data.length+1]; f@:CyB GQ  
for(int i=0;i queue[++size]=data; iIU( C.I  
fixUp(size); %N~C vN@T  
} |r~ uos  
} O5 7jz= r  
j=.g :&r)  
private int size=0; !J.rM5K  
Y%v P#>h  
private int[] queue; WhUa^  
.9\Cy4_qSd  
public int get() { ;x>;jS.t  
return queue[1]; X"J%R/f  
} >7FSH"8[,  
[n<.fw8$b  
public void remove() { t61'LCEis  
SortUtil.swap(queue,1,size--); iH _"W+dq  
fixDown(1); By/bVZks  
} $wXih#7  
file://fixdown QBjY&(vY  
private void fixDown(int k) { chwh0J;  
int j; &kq7gCd  
while ((j = k << 1) <= size) { uf0^E3H  
if (j < size %26amp;%26amp; queue[j] j++; .5k^f5a  
if (queue[k]>queue[j]) file://不用交换 ]EX--d<_`  
break; '?L%F{g/9  
SortUtil.swap(queue,j,k); >\-3P $  
k = j; }Ch[|D=Wd6  
} 3&'R1~Vh  
} Cs;<'[_?YO  
private void fixUp(int k) { gx&73f<J  
while (k > 1) { #y`k$20"  
int j = k >> 1; e6es0D[>5  
if (queue[j]>queue[k]) - coy@S=.'  
break; e>(Wvb&4  
SortUtil.swap(queue,j,k); p d%LL?O  
k = j; v7$9QVze  
} wO\!xW:  
} W)  
*%f3rvt7@)  
} H.;yLL=  
c( 8W8R  
} k%a?SU<f  
x_pMG!2  
SortUtil: jM[f[  
qSCTFJ0  
package org.rut.util.algorithm; K/A ? ]y  
(HaU,vP  
import org.rut.util.algorithm.support.BubbleSort; zrTY1Asw;4  
import org.rut.util.algorithm.support.HeapSort; n K0hTQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; X!?wL 0n  
import org.rut.util.algorithm.support.ImprovedQuickSort; HO G=c!b  
import org.rut.util.algorithm.support.InsertSort; kOzt"t&  
import org.rut.util.algorithm.support.MergeSort; :'b%5/ ^q  
import org.rut.util.algorithm.support.QuickSort; +"G(  
import org.rut.util.algorithm.support.SelectionSort; /T4VJ{D  
import org.rut.util.algorithm.support.ShellSort; }W)Mwu'W  
_/8y1) I  
/** .k|-Ks|d|  
* @author treeroot ^K*~ <O-  
* @since 2006-2-2 j!"iYtgV  
* @version 1.0 \j/}rzo]  
*/ )uu wwz  
public class SortUtil { 7j{Te)"  
public final static int INSERT = 1; K-ju,4A  
public final static int BUBBLE = 2; ,$SkaTBe  
public final static int SELECTION = 3; "Vq@bNtu+  
public final static int SHELL = 4; fLc!Sn.Y  
public final static int QUICK = 5; %!#rrt,F  
public final static int IMPROVED_QUICK = 6; u<J2p?`\&`  
public final static int MERGE = 7; AIf[W">\  
public final static int IMPROVED_MERGE = 8; ]r]+yM|  
public final static int HEAP = 9; Ed8U;U b  
{m>~`   
public static void sort(int[] data) { v^57j:sD  
sort(data, IMPROVED_QUICK); KX$qM g1j  
} 1@s^$fvW  
private static String[] name={ 6qY\7R2+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" z;``g"dSw  
}; T;xHIg4  
Bl:{p>-q  
private static Sort[] impl=new Sort[]{ LJ:mJ#  
new InsertSort(), nA|gQibA  
new BubbleSort(), -DbH6u3  
new SelectionSort(), V_7 Y1GD  
new ShellSort(), vEX|Q\b6'  
new QuickSort(), uVoF<={  
new ImprovedQuickSort(), )<m=YI ;<  
new MergeSort(), {-:4O\/  
new ImprovedMergeSort(), w50.gr7  
new HeapSort() & bp#1KR)  
}; `bBfNI?3d*  
`ja`#%^\u  
public static String toString(int algorithm){ 5&G Q=m  
return name[algorithm-1]; KY;uO 8Te  
} m? ]zomP  
.rD#1)O  
public static void sort(int[] data, int algorithm) { EN5G:hD  
impl[algorithm-1].sort(data); %N?W]vbra  
} P'F Pe55F  
jpPdjQ  
public static interface Sort { 3N)Ycf8  
public void sort(int[] data); o`JlXuG?o  
} 24.7S LXO  
<s59OdzP  
public static void swap(int[] data, int i, int j) { bahc{ZC2  
int temp = data; =0jmm(:Jh  
data = data[j]; $\JQGic`  
data[j] = temp; A>ug'.  
} XSL t;zL:  
} +S:u[x  
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