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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。 usf(U>  
插入排序: ([o:_5/8I  
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package org.rut.util.algorithm.support; &`2*6 )qa  
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import org.rut.util.algorithm.SortUtil; Xb 1^Oj  
/** ;K-t  
* @author treeroot :S6 <v0`Z  
* @since 2006-2-2 2;r^~:  
* @version 1.0 urjp&L&  
*/ &Sp:?I-  
public class InsertSort implements SortUtil.Sort{ LOkDx2@g  
LgKEg90w(  
/* (non-Javadoc) R! xc $`N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4>`w9   
*/ bGO_y]Pc  
public void sort(int[] data) { y N%Pe:R  
int temp; Q 5TyS8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :u93yH6~8  
} 0LuY"(LR  
} &`W,'qD$  
} V t;&2v  
>m{-&1Tx  
} v A~hkkj{  
R$`T"C"  
冒泡排序: o%Q2.  
sJ()ItU5i  
package org.rut.util.algorithm.support; ~3]8f0^%m  
[T|1Qq7  
import org.rut.util.algorithm.SortUtil; )d Dmq  
(:]iHg3  
/** WT N!2b  
* @author treeroot ,W;8!n0  
* @since 2006-2-2 WLFzLW=PD  
* @version 1.0 XaSl6CH  
*/ >pHvBFa3G  
public class BubbleSort implements SortUtil.Sort{ 3e1"5~?'<  
)+R3C%  
/* (non-Javadoc) HXo'^^}q;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5|z[%x~f  
*/ $7g(-W  
public void sort(int[] data) { ^@eCT}p{  
int temp; zxHfQ(  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y :BrAa[  
if(data[j] SortUtil.swap(data,j,j-1); 24l9/v'  
} K*RRbtb  
} hUc |Xm  
} ?"Q6;np*  
} lph_cY3p  
P~>nlm82]  
} wO N Qlt  
{ )K(}~VD  
选择排序: EatDT*!  
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package org.rut.util.algorithm.support; ]z NL+]1_  
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import org.rut.util.algorithm.SortUtil; t F( mD=[  
yB[ LO( i  
/** AP@d2{"m}  
* @author treeroot #}?$mxME*  
* @since 2006-2-2 F@3,>~[%I  
* @version 1.0 oaE3Aa  
*/ ]P^ +~  
public class SelectionSort implements SortUtil.Sort { rR;Om1 -,  
jL>r*=K)%  
/* (>23[;.0  
* (non-Javadoc) :{<HiJdp  
* #xB%v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GV/FK{v5  
*/ RzRLrfV  
public void sort(int[] data) { ' 'N@ <|  
int temp; j+seJg<_  
for (int i = 0; i < data.length; i++) { )qe o`4+y  
int lowIndex = i; af{K4:I  
for (int j = data.length - 1; j > i; j--) { 1Btf)y'  
if (data[j] < data[lowIndex]) { qI:wm=  
lowIndex = j; A+&Va\|x  
} 7#QH4$@1P  
} nK$m:=  
SortUtil.swap(data,i,lowIndex); e{/\znBS%  
} Joj8'  
} *z~Y*Q0  
4mg&H0 !  
} xa:P(x3[  
>[U$n.  
Shell排序:  t&]IgF  
~ME=!;<_  
package org.rut.util.algorithm.support; NeP1 #  
7)#/I  
import org.rut.util.algorithm.SortUtil; 4B]a8  
Zup?nP2GkT  
/** F9" K  
* @author treeroot Qfi5fp=f  
* @since 2006-2-2 lQjq6Fl2  
* @version 1.0 . b"e`Bw_=  
*/ ~@bKQ>Xw  
public class ShellSort implements SortUtil.Sort{ @VAhmYz  
 'M{_S  
/* (non-Javadoc) wVTo7o%U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) va.wdk g  
*/ ),eiJblH  
public void sort(int[] data) { # L R[6l  
for(int i=data.length/2;i>2;i/=2){ ;.Y`T/eWS  
for(int j=0;j insertSort(data,j,i); Qn7e6u@V  
} h2]Od(^[  
} ub%q<sE*  
insertSort(data,0,1); +TX]~k79Oq  
} rO~D{)Nu  
WUWQcJj  
/** FtXEudk  
* @param data tKs0]8tc  
* @param j HT'dft #  
* @param i H#D=vx'  
*/ I{ $|Ed1  
private void insertSort(int[] data, int start, int inc) { f!yxS?j3  
int temp; lbY>R@5  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); n3w2&  
} {+MMqJCa  
} {*m?t 7  
} h4C B1K  
u/AN| y  
} 2iu;7/  
<fxYTd<#D[  
快速排序: &'R]oeag  
+^.(3Aw  
package org.rut.util.algorithm.support; q0}LfXql8  
nC w1H kW  
import org.rut.util.algorithm.SortUtil; %K%z<R8  
'D bHXS7N  
/** V}*b^<2o 5  
* @author treeroot K;K tx>Z/  
* @since 2006-2-2 _Z%C{~,7)x  
* @version 1.0 8LL);"$  
*/ cg4,PI% hz  
public class QuickSort implements SortUtil.Sort{ 2yNlQP8%  
"^\4xI  
/* (non-Javadoc) S=o/n4@}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I;7VX5X  
*/ Vj_ $%0  
public void sort(int[] data) { 3^Ex_jeB  
quickSort(data,0,data.length-1); zr,jaR;  
} ,J[sg7v cv  
private void quickSort(int[] data,int i,int j){ jooh`| `P  
int pivotIndex=(i+j)/2; 6^ ~& sA  
file://swap (\G~S 4  
SortUtil.swap(data,pivotIndex,j); jE{z4en  
iU &V}p  
int k=partition(data,i-1,j,data[j]); ? in&/ZrB  
SortUtil.swap(data,k,j); a*=e 3nS  
if((k-i)>1) quickSort(data,i,k-1); ]fR 3f  
if((j-k)>1) quickSort(data,k+1,j); 2$jY_{B+x  
Y$N|p{Z  
} Yz,*Q<t  
/** GovGh? X#x  
* @param data 6A%Y/oU+2  
* @param i `/"z.~8  
* @param j X/@Gx 4  
* @return hM;EUWv  
*/ 0j3j/={|.1  
private int partition(int[] data, int l, int r,int pivot) { 7JujU.&{6  
do{ /q]WV^H  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $jm'uDvm  
SortUtil.swap(data,l,r); A/'G.H  
} 1 @/+ c  
while(l SortUtil.swap(data,l,r); bo]k9FC  
return l; X[VQ 1  
} __zsrIUJ  
)sW1a  
} Bq'hk<ns[  
1[!Idl?m  
改进后的快速排序: HzW ZQ6o  
 p.zU9rID  
package org.rut.util.algorithm.support; &fW;;>  
-QRKDp  
import org.rut.util.algorithm.SortUtil; R(csJ4F  
m'%F,c)  
/** ;]p#PNQ0  
* @author treeroot ^E5Xpza  
* @since 2006-2-2 k%hif8y  
* @version 1.0 WC`<N4g|  
*/ o'W &gkb9  
public class ImprovedQuickSort implements SortUtil.Sort { @#sQ7eMoy  
keX0br7u_  
private static int MAX_STACK_SIZE=4096; \&SP7~-eq  
private static int THRESHOLD=10; M5D,YC3<  
/* (non-Javadoc) +^`c" qJo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3?2;z+cz*u  
*/ Uq"RyvkpP  
public void sort(int[] data) { B [03,zVf  
int[] stack=new int[MAX_STACK_SIZE]; w2 CgEJ %  
K 5!k06;s  
int top=-1; c!s{QWd%  
int pivot; .sCo,  
int pivotIndex,l,r; HgbJsv$  
t0?\5q  
stack[++top]=0; .NZ_dz$c  
stack[++top]=data.length-1; W(EU*~<UC  
<>p\9rVp*^  
while(top>0){ $.v5G>- )3  
int j=stack[top--]; GK:*|jV  
int i=stack[top--]; &bTadd%0  
yBeSvsm  
pivotIndex=(i+j)/2; SdN|-'qf  
pivot=data[pivotIndex]; x_#yH3kJ  
|rsu+0Mtz  
SortUtil.swap(data,pivotIndex,j); ,~c:P>v=  
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file://partition B>gC75  
l=i-1; ^lbOv}C*  
r=j; F)!B%4  
do{ sA:0b5_a  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <` HLG2  
SortUtil.swap(data,l,r); >a Q; 8  
} C#;}U51:t  
while(l SortUtil.swap(data,l,r); Hz28L$  
SortUtil.swap(data,l,j); UtY< R  
H!HkXm"  
if((l-i)>THRESHOLD){ )J5(M`  
stack[++top]=i; J/=b1{d"n  
stack[++top]=l-1; v cqL  
} Gh|q[s*k  
if((j-l)>THRESHOLD){ "c=\?   
stack[++top]=l+1; !i0:1{.  
stack[++top]=j; g5_]^[up w  
} I9TOBn|6   
`2 Z  
} Q_]O[Kx  
file://new InsertSort().sort(data); jg' 'T1)  
insertSort(data); 0lY.z$V  
} b1E>LrL  
/** "rBo?%:  
* @param data !y `wAm>n  
*/ ,C!MHn^$  
private void insertSort(int[] data) { a'W-&j  
int temp; -g_PJ.Hk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C {gYrz)  
} Vtr 0=-m&  
} LBbk]I  
} r>A, 7{  
 KGFmC[  
} >4b-NS/}0  
V(w2k^7) F  
归并排序: xLX:>64'o>  
6E85mfFS  
package org.rut.util.algorithm.support; ' !ZFK}  
T^%$  
import org.rut.util.algorithm.SortUtil; px" .pYr0  
S"V|BU  
/** J_<ENs-  
* @author treeroot Tgc)'8A;BN  
* @since 2006-2-2 cT-XF  
* @version 1.0 c2-NXSjsW  
*/ gVEW*8  
public class MergeSort implements SortUtil.Sort{ Gd%KBb  
9!}&&]Q`  
/* (non-Javadoc) >Y!5c 2~`;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mO(m%3  
*/ -}4<P}.5T  
public void sort(int[] data) { K9 :I8E<  
int[] temp=new int[data.length]; hZU @35~BN  
mergeSort(data,temp,0,data.length-1); =T|Z[/fto  
} Tz:mj  
k[&+Iy  
private void mergeSort(int[] data,int[] temp,int l,int r){ /2tgxm$}  
int mid=(l+r)/2; ;gP@d`s  
if(l==r) return ; cEhwv0f!qS  
mergeSort(data,temp,l,mid); 2a 3i]e5Kt  
mergeSort(data,temp,mid+1,r); s: ~3|D][  
for(int i=l;i<=r;i++){ #0zMPh /U}  
temp=data; ej4xW~_  
} 3 T+#d-\  
int i1=l; /:~mRf^  
int i2=mid+1; _r^Cu.[7  
for(int cur=l;cur<=r;cur++){ y?zNxk/p  
if(i1==mid+1) :?O+EE  
data[cur]=temp[i2++]; 2aNCcZw0  
else if(i2>r) 37Q9goMov  
data[cur]=temp[i1++]; Z4b<$t[u  
else if(temp[i1] data[cur]=temp[i1++]; f4@>7K]9TA  
else 0V }knR.l  
data[cur]=temp[i2++]; 'x$>h)t]  
} >T'^&l(:  
} CuR.a  
Wz`MEyj  
} Z ^zUb  
9~J  
改进后的归并排序: 3){ /u$iH.  
Xb@lKX5Re  
package org.rut.util.algorithm.support; "u@)   
82O#Fe q  
import org.rut.util.algorithm.SortUtil; 0B7cpw>_J  
07:CcT  
/** oj/,vO:QT  
* @author treeroot Yg3Vj=  
* @since 2006-2-2 _3i.o$GO  
* @version 1.0 _l<e>zj  
*/ 8!(4;fN$j.  
public class ImprovedMergeSort implements SortUtil.Sort { 9TuE.  
Ei2hI  
private static final int THRESHOLD = 10; RP?UKOc  
S:"R/EE(  
/* p(-f$Q(  
* (non-Javadoc) IxNY%&* `  
* n}Pz:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h&|q>M3  
*/ @ )owj^sA  
public void sort(int[] data) { 2K0HN  
int[] temp=new int[data.length]; ]@wee08  
mergeSort(data,temp,0,data.length-1); 6`Zx\bPDm  
} ;5urIYd  
z~i=\/~tZ  
private void mergeSort(int[] data, int[] temp, int l, int r) { Yx>y(Whu.  
int i, j, k; 16Ym*kWIps  
int mid = (l + r) / 2; V<A_c^unO  
if (l == r) EdbL AagI6  
return; ;4tmnC>OnA  
if ((mid - l) >= THRESHOLD) M@ t,P?  
mergeSort(data, temp, l, mid); > 1 {V  
else B! $a Y  
insertSort(data, l, mid - l + 1); >|1.Z'r/  
if ((r - mid) > THRESHOLD) 0.7* 2s-  
mergeSort(data, temp, mid + 1, r); *.nC'$-2r  
else c((^l&  
insertSort(data, mid + 1, r - mid); 1iyd{r7|  
F0 x5(lp Q  
for (i = l; i <= mid; i++) { ?nN3K   
temp = data; $Hh3*reSg-  
} _?$P?  
for (j = 1; j <= r - mid; j++) { MLf,5f;e  
temp[r - j + 1] = data[j + mid]; !|}(tqt  
} A14}  
int a = temp[l]; Hyx%FN=  
int b = temp[r]; &.~Xl:lq  
for (i = l, j = r, k = l; k <= r; k++) { = zJY5@^'7  
if (a < b) { ME4Ir  
data[k] = temp[i++]; t_%6,?S6  
a = temp; MDI[TNYG  
} else { rWzw7T~  
data[k] = temp[j--]; 1<g,1TR  
b = temp[j]; aMI\gCB/  
} *E lR  
} J}a 8N.S  
} 46^LPC"x  
"_dh6naZX  
/** <4V]>[{W  
* @param data =gL~E9\  
* @param l fS2 ^$"B|  
* @param i H=Sy.  
*/ yv2BbrYyy  
private void insertSort(int[] data, int start, int len) { }H2<w-,+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jF4h/((|EU  
} H]>b<Cs  
} z@5t7e)!R  
} (9R;a np  
} ~{MmUp rS  
u7R:7$H  
堆排序: pI*/ - !I  
c}(fmJB&(  
package org.rut.util.algorithm.support; an!ceB  
;`ZGiax  
import org.rut.util.algorithm.SortUtil; Id-?her>B  
V0y Q  
/** t<'-?B2g  
* @author treeroot ^@V$'Bk  
* @since 2006-2-2 &d/v/Y  
* @version 1.0 2Hltgt,  
*/ e]N?{s   
public class HeapSort implements SortUtil.Sort{ G;r-f63N  
'Y`.0T[&  
/* (non-Javadoc) QI\&D)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i&KD)&9b#  
*/ ~]t/|xep  
public void sort(int[] data) { ;yh}$)^9  
MaxHeap h=new MaxHeap(); w s(9@  
h.init(data); 7k beAJ+{  
for(int i=0;i h.remove(); |%6zhkoufM  
System.arraycopy(h.queue,1,data,0,data.length); \VJ7ahg[\  
} tTa" JXG  
'&_<!Nv3  
private static class MaxHeap{ uYk4qorA  
doJ\7c5uU  
void init(int[] data){ ZUE?19GA  
this.queue=new int[data.length+1]; ^'"sFEV7RN  
for(int i=0;i queue[++size]=data; WR;"^<i9  
fixUp(size); LeY!A#j  
} zD8q(]: A  
} WHh=ht s\  
+;nADl+Q  
private int size=0; n|,kL!++.  
cZn B 2T?  
private int[] queue; =l&A9 >\  
tF> ?]  
public int get() { W/Rb7q4v  
return queue[1]; 0:<dj:%M  
} B5%N@g$`j  
JpuF6mQ  
public void remove() { t-#Y6U}b+  
SortUtil.swap(queue,1,size--); \W73W_P&g  
fixDown(1); H}KJd5A7  
} !wl3}]q  
file://fixdown (bP\_F5D  
private void fixDown(int k) { e%#8]$  
int j; Q<]~>cd^  
while ((j = k << 1) <= size) { vF45tw  
if (j < size %26amp;%26amp; queue[j] j++; Oh9jr"Gm=  
if (queue[k]>queue[j]) file://不用交换 0q_Ol]<V  
break; muSQFIvt  
SortUtil.swap(queue,j,k); k]*DuVCOX  
k = j; x+h7OvW{  
} , O=@I  
} ,"/<N*vh  
private void fixUp(int k) { $;<h<#_n;  
while (k > 1) { G $u:1&   
int j = k >> 1; 'ad|@Bh  
if (queue[j]>queue[k]) wzAp`Zs2Dm  
break; r>lC(x\B  
SortUtil.swap(queue,j,k); % ~%>3  
k = j; 6"Tr$E  
} #mqz*=L3  
} NJ-cP m  
uQ9/7"S  
} }-{l(8-  
=dbLA ,z9  
} 9\W~5J<7  
45` Gv  
SortUtil: 5gq3 >qo  
{rr ED  
package org.rut.util.algorithm; ~Ra1Zc$o:  
\$J!B&i  
import org.rut.util.algorithm.support.BubbleSort; VHsNz WI  
import org.rut.util.algorithm.support.HeapSort; %^RlE@l9  
import org.rut.util.algorithm.support.ImprovedMergeSort; r]1|I6:&)  
import org.rut.util.algorithm.support.ImprovedQuickSort; g<~[k?~J  
import org.rut.util.algorithm.support.InsertSort; hB:R8Y^?H  
import org.rut.util.algorithm.support.MergeSort; Fs:l"5~>1  
import org.rut.util.algorithm.support.QuickSort; Jrlc%,pZ  
import org.rut.util.algorithm.support.SelectionSort; BY: cSqAW  
import org.rut.util.algorithm.support.ShellSort; whP>'9t.w  
(E)/' sEb  
/** Xmy(pV!PF  
* @author treeroot ]4@z.1Mr  
* @since 2006-2-2 Dbr(Wg  
* @version 1.0 st36xS  
*/ /IVw}:G  
public class SortUtil { fw^mjD  
public final static int INSERT = 1; *>.~f<V  
public final static int BUBBLE = 2; #m9V) 1"wB  
public final static int SELECTION = 3; #'z\[^vp  
public final static int SHELL = 4; WPyd ^Y<  
public final static int QUICK = 5; ee&QZVL>  
public final static int IMPROVED_QUICK = 6; {rOz[E9vm  
public final static int MERGE = 7; lqPRUkin  
public final static int IMPROVED_MERGE = 8; 9&}qie,  
public final static int HEAP = 9; ?|^1-5l3  
ihH!"HH+  
public static void sort(int[] data) { +7+ VbsFG  
sort(data, IMPROVED_QUICK); ?"AcK" v  
} rjU $*+  
private static String[] name={ V&KH{j/P  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xPqpNs-,  
}; Z<y +D-/  
|6\ ?"#  
private static Sort[] impl=new Sort[]{ _}Jz_RS2`  
new InsertSort(), Yl1@ gw7  
new BubbleSort(), zEY Ey1  
new SelectionSort(), >T~{_|N  
new ShellSort(), =]7|*-  
new QuickSort(), ]5td,2E C  
new ImprovedQuickSort(), Mz]LFM  
new MergeSort(), >C_! }~  
new ImprovedMergeSort(), (m3p28Q?  
new HeapSort() [ sz#*IJ  
}; : M0LAN  
.(;k]U P  
public static String toString(int algorithm){ txr!3-Ne'!  
return name[algorithm-1]; \@OKB<ra  
} zy@ #R;  
& A9psc(,&  
public static void sort(int[] data, int algorithm) { _F^|n}Qbj  
impl[algorithm-1].sort(data); 6@o_MtI  
} bz H5Lc{%  
2~h)'n7Mw  
public static interface Sort { x)#k$ QU  
public void sort(int[] data); }9P)<[>  
} U$VTk  
;?inf`t  
public static void swap(int[] data, int i, int j) { uK(+WA  
int temp = data; & PHHacp  
data = data[j]; E_?3<)l)RI  
data[j] = temp; Q;r 0#"  
} 7F?^gMi  
} ; @Gm@d  
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