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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。 7p.>\YtoR}  
插入排序: O*[{z)M.  
xl(@C*.sC1  
package org.rut.util.algorithm.support; `s|]"'rX  
L*h{'<Bz  
import org.rut.util.algorithm.SortUtil; [}OgSP9i  
/** :_ROJ  
* @author treeroot F>zl9Vi<  
* @since 2006-2-2 )"Q*G/+2Ie  
* @version 1.0 Wy4$*$  
*/ ^Dg <Ki  
public class InsertSort implements SortUtil.Sort{ sV/l5]b]  
%@Oma  
/* (non-Javadoc) & $'z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V8WFQdXc  
*/ uI~s8{0T6  
public void sort(int[] data) { Yw'NX5#)g  
int temp; ).5RPAP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qnM|w~G  
} -`+<{NHv\  
} BecP T  
} *>NX%by)  
PRkS Q4  
} P?LlJ 5hn  
(@r `$5D.b  
冒泡排序: F(5hmr  
/P:.qtT(  
package org.rut.util.algorithm.support; -`b8T0?oK  
`Out(Hn  
import org.rut.util.algorithm.SortUtil; ]5 Qy  
,1oQ cC  
/** zce`\ /:  
* @author treeroot sa1h%<   
* @since 2006-2-2 {D`'0Z1"  
* @version 1.0 ~1 ~Xfo>  
*/ S?ujRp  
public class BubbleSort implements SortUtil.Sort{ ehNzDr\s  
q5x[~]?  
/* (non-Javadoc) 5O <>mCF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |TsE-t*E}  
*/ GOT1@.Y  
public void sort(int[] data) { +k\Uf*wh  
int temp; yNg9X(U  
for(int i=0;i for(int j=data.length-1;j>i;j--){ G(iJi  
if(data[j] SortUtil.swap(data,j,j-1); ,CvG 20>  
} vxFTen{-F  
} @%/]Q<<q  
} ]:(W_ qEA  
} omSM:f_~  
)+P]Vf\jH  
} jN31hDg<z  
Z[Qza13lo  
选择排序: r H8@69,B  
B9R(&<4  
package org.rut.util.algorithm.support; 1x)ZB~L  
;G |i^  
import org.rut.util.algorithm.SortUtil; ^n1%OzGK#  
A#8q2n270*  
/** q:\g^_!OGA  
* @author treeroot {q%Sx*k9[  
* @since 2006-2-2 {@W93=Vq8  
* @version 1.0 /E;y,o75  
*/ ~y HU^5D  
public class SelectionSort implements SortUtil.Sort { DdQ;Q5|  
*&BnF\?m  
/* ]rehW}  
* (non-Javadoc) \u,}vpp z  
* =Prb'8 W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) : _e#  
*/ =m89z}Ot  
public void sort(int[] data) { _VE^/;$"l  
int temp; bmgncwlz  
for (int i = 0; i < data.length; i++) { IW=cym7  
int lowIndex = i; Wj|alH9<  
for (int j = data.length - 1; j > i; j--) { gr-9l0u  
if (data[j] < data[lowIndex]) { }jH7iyjD  
lowIndex = j; o?L'Pg  
} YB<*"HxM)}  
} W>_]dPBS/  
SortUtil.swap(data,i,lowIndex); ?eH&'m}-  
} "@R>J ?Cc+  
} >Y7a4~ufko  
2H71~~ c  
} KmG  
GSclK|#t E  
Shell排序: q6Rr.A  
,.iRnR  
package org.rut.util.algorithm.support; W1fW}0   
m!<i0thJ  
import org.rut.util.algorithm.SortUtil; m>USD? i  
w(ln5q  
/** +#U|skl  
* @author treeroot dr)YzOvba  
* @since 2006-2-2 6+r$t#  
* @version 1.0 Zl 9aDg  
*/ _Zk{!  
public class ShellSort implements SortUtil.Sort{ NBl+_/2'w  
)?+$x[f!*  
/* (non-Javadoc) *eI)Z=8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A.<H>=Z# O  
*/ &'cL%.  
public void sort(int[] data) { r/pH_@  
for(int i=data.length/2;i>2;i/=2){ V7#v6!7A@  
for(int j=0;j insertSort(data,j,i); 4BnSqwa_  
} `E+Jnu,jC  
} KT]Pw\y5  
insertSort(data,0,1); ? WJ> p  
} ^` un'5Vk  
S$KFf=0  
/** kEwaT$  
* @param data ~ wg:!VWA)  
* @param j X%yO5c\l2  
* @param i ]7-&V-Ct*  
*/ Qt_dEl  
private void insertSort(int[] data, int start, int inc) { SGb;!T *  
int temp; =*p/F  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *8~86u GU  
} g^*<f8 ~d  
} ;^t{Il'j  
} N0hE4t  
dJ$"l|$$  
} fXrXV~'8  
d%l{V6  
快速排序: ^u 3V E  
OL4z%mDZi  
package org.rut.util.algorithm.support; oIUy-|  
U(~+o  
import org.rut.util.algorithm.SortUtil; 74!oe u.>  
8r3A~  
/** 3?Y2L  
* @author treeroot Ol4+_n8xj  
* @since 2006-2-2  >S$Z  
* @version 1.0 ss;R8:5  
*/ xsWur(>]  
public class QuickSort implements SortUtil.Sort{ \*=7#Vd  
'SQG>F Uy  
/* (non-Javadoc) (sVi\R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nUkaz*4qU  
*/ '_|h6<.k[  
public void sort(int[] data) {  XL7h}  
quickSort(data,0,data.length-1); [M+f-kl  
} aF03a-qw<  
private void quickSort(int[] data,int i,int j){ cuOvN"nuNj  
int pivotIndex=(i+j)/2; %Uz(Vd#K  
file://swap =8U&[F  
SortUtil.swap(data,pivotIndex,j); Q:J^"  
>X*Mio8P#  
int k=partition(data,i-1,j,data[j]); sz9L8f2  
SortUtil.swap(data,k,j); CI3XzH\IX*  
if((k-i)>1) quickSort(data,i,k-1); `/Y{ l  
if((j-k)>1) quickSort(data,k+1,j); bWOS `5  
re> rr4@  
} ?%H):r  
/** _X@v/sAy  
* @param data (b`]M`Fc  
* @param i Nk {XdrY  
* @param j V!)O6?l  
* @return T#bu V  
*/ ZvcJK4hi  
private int partition(int[] data, int l, int r,int pivot) { DY[$"8Kxcp  
do{ YM5fyv?  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y"Nsh>h  
SortUtil.swap(data,l,r); .*elggM  
} 2h?uNW(0Q  
while(l SortUtil.swap(data,l,r); 610D% F  
return l; WxF:~{  
} aL\nT XakX  
j <o3JV  
} !UFfsNiXZ  
8Jz:^k:  
改进后的快速排序: #A]-ax?Qc}  
ZyEHzM{$  
package org.rut.util.algorithm.support; %vBhLaE  
%#$EP7"J  
import org.rut.util.algorithm.SortUtil; ?McQr1  
PTj&3`v  
/** N/GQt\tV<  
* @author treeroot ~F1:N>>_Cf  
* @since 2006-2-2 j(~ *'&|(  
* @version 1.0 dDnf^7q/  
*/ [TNj;o5J  
public class ImprovedQuickSort implements SortUtil.Sort { s: 3z'4oX  
 6m6zA/  
private static int MAX_STACK_SIZE=4096; <8,cuX\  
private static int THRESHOLD=10; ne^imht  
/* (non-Javadoc) _V\Bp=9W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dg^L=  
*/ je]}R>[r5  
public void sort(int[] data) { j;+?HbL  
int[] stack=new int[MAX_STACK_SIZE]; Y"KE7>Jf  
.; &# )l  
int top=-1; Q[#vTB$f  
int pivot; F]9nB3:W  
int pivotIndex,l,r; &N;-J2M  
$y b4xU  
stack[++top]=0; 1 E22R  
stack[++top]=data.length-1; eAqz3#_My  
l&}y/t4%  
while(top>0){ CpJ0m-7aIH  
int j=stack[top--]; uPniLx\t:  
int i=stack[top--]; ;U_QvN|  
+S=Rn,  
pivotIndex=(i+j)/2; vVE7fq3  
pivot=data[pivotIndex]; Kt(-@\)!  
t-LG }nv  
SortUtil.swap(data,pivotIndex,j); u a\,->  
"]-Xmdk09  
file://partition u<n Lag  
l=i-1; mA{~Pp Sb  
r=j; [xKd7"d/n  
do{ iPrLwheb  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); N:9>dpP}O  
SortUtil.swap(data,l,r); 8| $3OVS  
} Ka,^OW}<%q  
while(l SortUtil.swap(data,l,r); r#6_]ep}<'  
SortUtil.swap(data,l,j); w;l<[q?_  
Q3"} Hl2  
if((l-i)>THRESHOLD){ CA +uKM^"6  
stack[++top]=i; %8~3M75$  
stack[++top]=l-1; Q~Z=(rP20  
} Vrvic4  
if((j-l)>THRESHOLD){ 5[Pr|AY  
stack[++top]=l+1; l{D'uI[&  
stack[++top]=j; D_8x6`z  
} ;}'D16`j  
*cO sv  
} j+HHQd7Y  
file://new InsertSort().sort(data); L;od6<.*m  
insertSort(data); @&}q} D  
} Vi$-Bw$@  
/** pBw0"ff  
* @param data S~Id5T:,  
*/ lvp8z) G  
private void insertSort(int[] data) { =V^.}WtO  
int temp; B7"PIkk;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7-BvFEM;  
} RW P<B0)  
} X_v[MW  
} `g,8-  
G-T0f  
} ~0b O}  
Zo{$  
归并排序: $t/x;< .H  
u_).f<mUdF  
package org.rut.util.algorithm.support; {f{ZHi|  
x=#VX\5k:  
import org.rut.util.algorithm.SortUtil; D?Ux[Ozb  
l (3bW1{n  
/** Xj*vh m%i  
* @author treeroot U!m @DJj  
* @since 2006-2-2 n k2om$nN  
* @version 1.0 q5 L51KP2  
*/ vaon{2/I  
public class MergeSort implements SortUtil.Sort{ W}|'#nR  
<?D\+khlq  
/* (non-Javadoc) @ps1Dr4s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 tR_8lC  
*/ C^ )*Dsp  
public void sort(int[] data) { (os$B  
int[] temp=new int[data.length]; zuJtpMn  
mergeSort(data,temp,0,data.length-1); YA&g$!  
} > 0<)=  
CZbYAxNl  
private void mergeSort(int[] data,int[] temp,int l,int r){ :EHJ\+kejX  
int mid=(l+r)/2; N&[D>G]>v  
if(l==r) return ; 7w1wr)qSB  
mergeSort(data,temp,l,mid); nW|wY.  
mergeSort(data,temp,mid+1,r); boo }u  
for(int i=l;i<=r;i++){ )3(;tT,$}^  
temp=data; #M!!CX*k  
} Iz[@^IUx=  
int i1=l; jM:Y' l]  
int i2=mid+1; mYU9 trHV  
for(int cur=l;cur<=r;cur++){ |] Qg7m,O  
if(i1==mid+1) wW"z  
data[cur]=temp[i2++]; ,<:!NF9  
else if(i2>r) 3R&lqxhg  
data[cur]=temp[i1++]; _`#3f1F@[  
else if(temp[i1] data[cur]=temp[i1++]; 1xc~`~  
else yObuWDA9  
data[cur]=temp[i2++]; al`3Lu0  
} kapC%/6"  
} z%/N!RLW  
smm]6  
} ]!IVz)<E&  
}(<%`G6N  
改进后的归并排序: hb{ u'=  
1EyL#;k  
package org.rut.util.algorithm.support; N 75:5  
`EtS!zD~b  
import org.rut.util.algorithm.SortUtil; V_Wwrhua  
# 6!5 2  
/** V#jWege  
* @author treeroot F_bF  
* @since 2006-2-2 apk4 j\i?5  
* @version 1.0 ,<A$h3*  
*/ .6OgO{P:  
public class ImprovedMergeSort implements SortUtil.Sort { !d&C>7nb  
.SWt3|Pi5  
private static final int THRESHOLD = 10; 2y%,p{="  
mYc.x  
/* #Oha(mRY  
* (non-Javadoc) )z8!f}:De=  
* %0Y=WYUH>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KLX/O1B  
*/ ,TRTRb;  
public void sort(int[] data) { $#|gLVOQ  
int[] temp=new int[data.length]; <94_@3  
mergeSort(data,temp,0,data.length-1); (5Sivw*mP  
} IG3,XW  
r &Ca" dI  
private void mergeSort(int[] data, int[] temp, int l, int r) { p!/[K6u  
int i, j, k; Z#.f&K )xX  
int mid = (l + r) / 2; 45&8weXO:'  
if (l == r) {Q<$Uo6V  
return; oy<WUb9W  
if ((mid - l) >= THRESHOLD) B>Wu;a.:L  
mergeSort(data, temp, l, mid); j|tC@0A  
else `nO71mo  
insertSort(data, l, mid - l + 1); 6:% L![FX  
if ((r - mid) > THRESHOLD) JH7Ad (:  
mergeSort(data, temp, mid + 1, r); Ez{MU@Fk  
else ql<rU@  
insertSort(data, mid + 1, r - mid); "KJ%|pg_C  
?6!]Nl1gr  
for (i = l; i <= mid; i++) { >E,U>@+  
temp = data; m4:^}O-#  
} T}3v(6ew4  
for (j = 1; j <= r - mid; j++) { >h+349  
temp[r - j + 1] = data[j + mid]; +\"-P72vjk  
} 3zT_^;:L  
int a = temp[l]; |;A/|F0-e  
int b = temp[r]; VzJ5.mRQ  
for (i = l, j = r, k = l; k <= r; k++) { U4G}DCU  
if (a < b) { Tg3!Rq55  
data[k] = temp[i++]; }qjCTEs}  
a = temp; v_<2H' *Q  
} else { ,^8MB.  
data[k] = temp[j--]; NU (AEfF  
b = temp[j]; BGr.yEy  
} "g+z !4b#  
} @u._"/K  
} *1@:'rJ  
{ BEo &  
/** iBudmT8  
* @param data gN {'UDg  
* @param l iRi{$.pVJ  
* @param i h3gWOU  
*/ IHC1G1KW=A  
private void insertSort(int[] data, int start, int len) { :D7|%KK  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?GBkqQ  
} Z2"? &pKV  
} hO[3Z ^X  
} US{3pkr;I]  
} +%\oO/4Fs  
8j1ekv  
堆排序: S-+M;@'Rl  
gK|R =J  
package org.rut.util.algorithm.support; O--7<Q\  
IaFr&  
import org.rut.util.algorithm.SortUtil; ;W:6{9m ze  
oVCmI"'  
/** ^nVl (^{  
* @author treeroot j8 C8X$  
* @since 2006-2-2 _#o' +_Z  
* @version 1.0 }1-I[q6  
*/ z<]bv7V  
public class HeapSort implements SortUtil.Sort{ X5 ITF)&  
^/Sh=4=G  
/* (non-Javadoc) CVXytS?@x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #=}$OFg  
*/ &W }<:WH~  
public void sort(int[] data) {  uIMe  
MaxHeap h=new MaxHeap(); 9N[EZhW  
h.init(data); `B8tmW#  
for(int i=0;i h.remove(); nT#JOmv  
System.arraycopy(h.queue,1,data,0,data.length); $\AEWFB  
} nU`Lhh8y  
}%n5nLU`  
private static class MaxHeap{ f=J<*h  
2>em0{e  
void init(int[] data){ 6k?`:QK/sl  
this.queue=new int[data.length+1]; >NV=LOO  
for(int i=0;i queue[++size]=data; %~*jae!f  
fixUp(size); >uJ/TQU  
} x O7IzqY  
} rsa&Oo D>  
)R{UXk3q}  
private int size=0; jw6Tj;c  
O7aLlZdg~  
private int[] queue; +Zk,2ri  
ep(g`e  
public int get() { U\+&cob.  
return queue[1]; 5+X_4lEJK(  
} c#xP91.m  
D&hqV)d4R  
public void remove() { Y|0ow_oH  
SortUtil.swap(queue,1,size--); VanB>|p6  
fixDown(1); }gf}eH  
} `Iy4=nVb  
file://fixdown p SN~DvR  
private void fixDown(int k) { b~7drf  
int j; N<z`yV  
while ((j = k << 1) <= size) { |sgXh9%x<  
if (j < size %26amp;%26amp; queue[j] j++; 5nCu~<uJ  
if (queue[k]>queue[j]) file://不用交换 ! d9AG|  
break; 9>,Qgp,w  
SortUtil.swap(queue,j,k); K^%-NyV  
k = j; u@FsLHn  
} ?)3jqQ.  
} "r.2]R3  
private void fixUp(int k) { o4=Yu7L  
while (k > 1) { Gk~l,wV>  
int j = k >> 1; r{+aeLu  
if (queue[j]>queue[k]) )WR_ ug  
break; 8 |h9sn;P  
SortUtil.swap(queue,j,k); oUW<4l  
k = j; u}H$-$jE  
} 2pyt&'NJua  
} \+qOO65/+  
nb dGt  
} EH`0  
UCqs}U8  
} Gg0#H^s( (  
J.M.L$  
SortUtil: [EHrIn  
evl -V>   
package org.rut.util.algorithm; 'zgvQMu  
't>r sp+#  
import org.rut.util.algorithm.support.BubbleSort; K}I0o!(#  
import org.rut.util.algorithm.support.HeapSort; nJ3vi}`  
import org.rut.util.algorithm.support.ImprovedMergeSort; OKwOugi0  
import org.rut.util.algorithm.support.ImprovedQuickSort; 0|)19LR  
import org.rut.util.algorithm.support.InsertSort; oJaAM|7uv  
import org.rut.util.algorithm.support.MergeSort; V"d=.Hb>  
import org.rut.util.algorithm.support.QuickSort; Pl~P-n  
import org.rut.util.algorithm.support.SelectionSort; iH)Nk^   
import org.rut.util.algorithm.support.ShellSort; P6?0r_Y  
!eD+GDgE]  
/** L{ ^4DznI  
* @author treeroot , &' Y  
* @since 2006-2-2 =v"xmx&4  
* @version 1.0 `"y{;PCt_  
*/ >BqCkyM9Kf  
public class SortUtil { K%,$ V,#  
public final static int INSERT = 1; uzorLeu  
public final static int BUBBLE = 2; dhR(_  
public final static int SELECTION = 3; 9d[qh kPu)  
public final static int SHELL = 4; .L;",E  
public final static int QUICK = 5; u2qV6/  
public final static int IMPROVED_QUICK = 6; MguL$W&l  
public final static int MERGE = 7; 4'At.<]jL  
public final static int IMPROVED_MERGE = 8; Mz|L-62  
public final static int HEAP = 9; t;Wotfc[#0  
NoW!xLI  
public static void sort(int[] data) { B/YcSEY;  
sort(data, IMPROVED_QUICK); S=R 3"~p  
} lpEDPvD_Vm  
private static String[] name={ kHU"AD}.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _Dq Qfc%  
}; jE U'.RBN%  
\5[-Ml  
private static Sort[] impl=new Sort[]{ Kd{#r/HZ  
new InsertSort(), r<FQX3  
new BubbleSort(),   8Uj:  
new SelectionSort(), { R*Y=Ie  
new ShellSort(), 6/y* 2z;  
new QuickSort(), ZC\mxBy  
new ImprovedQuickSort(), /e5\9  
new MergeSort(), anx&Xj|=.F  
new ImprovedMergeSort(), Q#rt<S1zW  
new HeapSort() IrO +5w  
}; ul}'{|4  
q,,j',8kq/  
public static String toString(int algorithm){ (UW6F4:$  
return name[algorithm-1]; ( Yi=v'd  
} ^]rxhpS  
u_'nOle K  
public static void sort(int[] data, int algorithm) { Oc-u=K,B  
impl[algorithm-1].sort(data); ze"~Ird  
} L[]^{ O   
UA0tFeH  
public static interface Sort { YmCbxYa7  
public void sort(int[] data); 4_< nQ9K  
} U?6yke  
^uBwj }6  
public static void swap(int[] data, int i, int j) { (n=Aa;  
int temp = data; ?Y!^I2Y6  
data = data[j]; @W [{2d  
data[j] = temp; F^sw0 .b  
} h3t$>vs2F"  
} j#o3  
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