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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。 qyuU  
插入排序: 6F3#Rxh  
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package org.rut.util.algorithm.support; Y75,{1\l0  
 P-QZ=dm  
import org.rut.util.algorithm.SortUtil; >%.6n:\rG  
/** 2@aVoqrq#  
* @author treeroot .~6p/fHX  
* @since 2006-2-2 kGMI ?  
* @version 1.0 ]|[oL6"  
*/ Khxl 'qj  
public class InsertSort implements SortUtil.Sort{ 1G+42>?<1  
nrMm](Y45  
/* (non-Javadoc) xS`>[8?3<T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nq)=E[$  
*/ oToUpkAI  
public void sort(int[] data) { g#1_`gK  
int temp; X/TuiKe  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C_Y^<  
} IXugnvyV  
} )sVz;rF<  
} 4*_9Gl  
,&!Txyye  
} : \w\K:  
]v3 9ag_hu  
冒泡排序: c?CjJ}-7  
Bls\)$  
package org.rut.util.algorithm.support; 0I4RZ.2*Y  
B`} ?rp  
import org.rut.util.algorithm.SortUtil; n97A'"'wz  
Dg4 ?,{c9W  
/** 70l"[Y  
* @author treeroot 1+PLj[;jJ:  
* @since 2006-2-2 VAF+\Cea=  
* @version 1.0 Ex~[Hk4ow  
*/ ao<@a{G  
public class BubbleSort implements SortUtil.Sort{ GM{m(Y  
`ej  
/* (non-Javadoc) _gjsAbM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kgi%Nd  
*/ CEE`nn  
public void sort(int[] data) { AxUj CerNf  
int temp; _mKO4Atw  
for(int i=0;i for(int j=data.length-1;j>i;j--){ veg\A+:'  
if(data[j] SortUtil.swap(data,j,j-1); B i?DmrH  
} T%Vii*?M  
} u<./ddC  
} Iw8;",e2  
} 1"009/|   
%lAJ]$m  
} [XjJsk,  
W\o(f W  
选择排序: Z16G  
_) 2fXG!  
package org.rut.util.algorithm.support; c$Js<[1  
.0S.7w3dZo  
import org.rut.util.algorithm.SortUtil; cOth q87:  
I|,^a|\  
/** ^wCjMi(sj  
* @author treeroot $ckX H,l_  
* @since 2006-2-2 6+A<_r`#Q  
* @version 1.0 @;M( oFS9  
*/ Xz&Hfs"/J  
public class SelectionSort implements SortUtil.Sort { 2c@R!*  
xWD=",0+  
/* :f?\ mVS+  
* (non-Javadoc) gYfN ?A*`_  
* ~T9%%W[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~cVFCM  
*/ oJbD|m  
public void sort(int[] data) { MbC7`Sp&i  
int temp; ]d}Z2I'  
for (int i = 0; i < data.length; i++) { mnu4XE#|  
int lowIndex = i;  ;?1H&  
for (int j = data.length - 1; j > i; j--) { NduvfA4  
if (data[j] < data[lowIndex]) { kXA o+l  
lowIndex = j; -mOSB(#bo  
} b"t95qlL  
} T~7i:<E^  
SortUtil.swap(data,i,lowIndex); =0TnH<`  
} ByoSwQ  
} 1w/1k6`0  
,J"6(nk  
} @*e|{;X]hy  
#ok1qT9_  
Shell排序: u;p{&\(]  
;3OQgKI  
package org.rut.util.algorithm.support; at]=SA  
`@q[&^  
import org.rut.util.algorithm.SortUtil; I3]-$  
eTem RNz  
/** :2iNw>z1  
* @author treeroot W\:!v%C  
* @since 2006-2-2 orYE&  
* @version 1.0 ]l7) F-v  
*/ Fxdu)F,~u  
public class ShellSort implements SortUtil.Sort{ e3,TY.,Ay  
x1</%y5ev  
/* (non-Javadoc) DW&%"$2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c""*Ng*T  
*/ $$ouqLu  
public void sort(int[] data) { r:lv[/ D  
for(int i=data.length/2;i>2;i/=2){ UjxEbk5>^  
for(int j=0;j insertSort(data,j,i); +?Vj}p;  
} a~E@scD  
} 4$.$j=Ct."  
insertSort(data,0,1); 0YK`wuZGS  
} 6x|"1 G{  
5S`_q&  
/** `!WtKqr%B  
* @param data <"F\&M`G  
* @param j dCv@l7hE  
* @param i l]t9*a]a  
*/ 2u9O+]EP  
private void insertSort(int[] data, int start, int inc) { uvR9BL2=  
int temp; &J(+XJM%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4.il4Qqy}i  
} Otq`45  
} D#Qfa!=g  
} vU,AOK[l{  
:j_OO5b!  
} !lQGoXQ'4  
"c5C0 pK0  
快速排序: 0qP&hybL[(  
eS)2#=  
package org.rut.util.algorithm.support; 7OuzQzhcK  
>Y,3EI\  
import org.rut.util.algorithm.SortUtil; xS.Rpx/8  
ZccQ{$0H  
/** qYpuo D   
* @author treeroot u\LG_/UJV1  
* @since 2006-2-2 :lf;C T6$  
* @version 1.0 s&(,_34  
*/ wkNf[>jX?  
public class QuickSort implements SortUtil.Sort{ 2y6@:VxSh  
Xc)V;1  
/* (non-Javadoc) vwy10PlqL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WZ}je!82  
*/ P(iZGOKUs=  
public void sort(int[] data) { Ce&nMgd~  
quickSort(data,0,data.length-1); _D{zB1d\0  
} 'zYKG5A  
private void quickSort(int[] data,int i,int j){ ?naPti1GX  
int pivotIndex=(i+j)/2; O5}/OH|j  
file://swap !%w#h0(b  
SortUtil.swap(data,pivotIndex,j); r(UEPGu|~l  
Xxl>,QUA  
int k=partition(data,i-1,j,data[j]); 4a'O#;h o  
SortUtil.swap(data,k,j); O<}^`4d  
if((k-i)>1) quickSort(data,i,k-1); 9{OH%bF  
if((j-k)>1) quickSort(data,k+1,j); D@]gc&JN[  
31BN ?q  
} kk`BwRh)d;  
/** mX@Un9k  
* @param data L|sWSrqd  
* @param i - 0t  
* @param j 1\v$8pP+  
* @return JGmW>mH  
*/ B_f0-nKP  
private int partition(int[] data, int l, int r,int pivot) { y&y(<  
do{ ONx|c'0g  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `i{k^Q  
SortUtil.swap(data,l,r); p(2j7W-/  
} >v4k_JX  
while(l SortUtil.swap(data,l,r); kBPFk t2  
return l; tykA69X\W  
} Sr7+DCr  
vBUl6EmWu  
} A<6V$e$:2  
o?G^=0T  
改进后的快速排序: Y`FGD25`  
uj.~/W1,!  
package org.rut.util.algorithm.support; vS~y~uU%6  
f;/t7=>d  
import org.rut.util.algorithm.SortUtil; S}"?#=Q.%O  
;O YwZ  
/** @5gZK[?|I  
* @author treeroot //--r5Q  
* @since 2006-2-2 Q*TxjE7K  
* @version 1.0 y$)gj4k/D  
*/ ? Azpb}#  
public class ImprovedQuickSort implements SortUtil.Sort { d}f| HOFq  
y)3(  
private static int MAX_STACK_SIZE=4096; h.)2,  
private static int THRESHOLD=10; i '!M<>7  
/* (non-Javadoc) 39!o!_g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b("JgE`  
*/ R|Ft@]  
public void sort(int[] data) { ?o0#h  
int[] stack=new int[MAX_STACK_SIZE]; (4V1%0  
X$JO<@x  
int top=-1; .}fc*2.'  
int pivot;  =erA.u  
int pivotIndex,l,r; \Rn.ug  
ADX}  
stack[++top]=0; D} 0>x~  
stack[++top]=data.length-1; |Y<ca   
C# r_qn  
while(top>0){ /x_C  
int j=stack[top--]; e,E;\x &  
int i=stack[top--]; K. G#[  
o,) p*glO  
pivotIndex=(i+j)/2; BO\l>\)Ir  
pivot=data[pivotIndex]; !W:QLOe6F  
_}]o~  
SortUtil.swap(data,pivotIndex,j); I#l9  
(Cp:NS  
file://partition ?HIc=  
l=i-1; {CH\TmSz  
r=j; 9[N' HpQ3  
do{ ^OG^% x"  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); z@y* jT  
SortUtil.swap(data,l,r); +bm2vIh$  
} 6@2p@eYo  
while(l SortUtil.swap(data,l,r); r"fu{4aX  
SortUtil.swap(data,l,j); 62EJ# q[  
"4"\tM(  
if((l-i)>THRESHOLD){ (I.uQP~H  
stack[++top]=i; `M>{43dj  
stack[++top]=l-1; !xo@i XL  
} Cw{#(xX  
if((j-l)>THRESHOLD){ jZv8X 5i  
stack[++top]=l+1; #bu`W!p}  
stack[++top]=j; y8+?:=N.  
} .M>u:,v  
MPzqw)_-v  
} Rl5}W\&  
file://new InsertSort().sort(data); d+T]EpQJ*  
insertSort(data);  NkO$ M  
} n^Z?u9VR  
/** `"ie57-  
* @param data 66L*6O4  
*/ @oRYQ|.R  
private void insertSort(int[] data) { 3SIB #"9  
int temp; A v2 _A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); He!0&B\7h  
} Kg]( kP  
} l3g6y 9;  
} q=nMZVVlF(  
rW\~sTH  
} La9@h"  
T[Gz  
归并排序: }4 $EN  
G~esSL^G/  
package org.rut.util.algorithm.support; 3F.O0Vz  
0)2lBfHQ&  
import org.rut.util.algorithm.SortUtil; :&:>sd(QD  
RmNF]"3%  
/** ]ipVN  
* @author treeroot PPq*_Cf  
* @since 2006-2-2 ONfJ"Rp3  
* @version 1.0 *E. 2R{  
*/ '6WDs]\  
public class MergeSort implements SortUtil.Sort{ shn-Es*  
U_8I$v-~  
/* (non-Javadoc) *(k=!`4(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8v6rS-iHP  
*/ ',&MYm\  
public void sort(int[] data) { ;q^YDZ'  
int[] temp=new int[data.length]; ah<f&2f  
mergeSort(data,temp,0,data.length-1); l|up3A3)  
} h`GV[Oo:  
Fh/C{cX9g  
private void mergeSort(int[] data,int[] temp,int l,int r){ O~Fk0}-  
int mid=(l+r)/2; QV 'y6m\  
if(l==r) return ; ut,"[+ J  
mergeSort(data,temp,l,mid); kt:%]ZZL  
mergeSort(data,temp,mid+1,r); >S3 >b  
for(int i=l;i<=r;i++){ }N|/b"j9  
temp=data; J~Ph)|AiS  
} {vH8X(m  
int i1=l; _k@l-Bj  
int i2=mid+1; a|53E<5X  
for(int cur=l;cur<=r;cur++){ [}Iq-sz;0  
if(i1==mid+1) F>Oh)VL,Ev  
data[cur]=temp[i2++]; [*<&]^  
else if(i2>r) W P&zF$  
data[cur]=temp[i1++]; c,fedH;  
else if(temp[i1] data[cur]=temp[i1++]; u'b_zlW@  
else $3Ia+O   
data[cur]=temp[i2++]; l`]!)j|+  
} sg2C_]i,H  
} x M[#Ah)  
wz#n$W3mGf  
} *Wau7  
cA\W|A)  
改进后的归并排序: K!~ ](_W!  
TDGzXJf[  
package org.rut.util.algorithm.support; R}Y=!qjYE=  
&40]sxm  
import org.rut.util.algorithm.SortUtil; {cI<4><  
el%Qxak`"  
/** y_&XF>k91  
* @author treeroot E=QQZ\w  
* @since 2006-2-2 N-|Jj?c  
* @version 1.0 *S4P'JSY  
*/ yB1>83!q  
public class ImprovedMergeSort implements SortUtil.Sort { AVWrD[ wD2  
a40BisrD~6  
private static final int THRESHOLD = 10; jayoARUB  
dp70sA!JF  
/* `ahXn  
* (non-Javadoc) .#J3UZ  
* 9="sx 8?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~dLZ[6Z  
*/ #w@Pa L iS  
public void sort(int[] data) { ||HIp9(3  
int[] temp=new int[data.length]; H/&Q,9sU21  
mergeSort(data,temp,0,data.length-1); mK-:laIL"  
} (c2\:hvy  
QEKFuY<E+  
private void mergeSort(int[] data, int[] temp, int l, int r) { ;gnr\C*G  
int i, j, k; z-G (!]:  
int mid = (l + r) / 2; /f<(K-o]  
if (l == r) '[^2uQc  
return; 3(&F.&C$$  
if ((mid - l) >= THRESHOLD) 88j ;7  
mergeSort(data, temp, l, mid); Zto E= 7K  
else <UdD@(iZ#  
insertSort(data, l, mid - l + 1); ?< QFW#:)  
if ((r - mid) > THRESHOLD) %#a%Luq  
mergeSort(data, temp, mid + 1, r); QO/7p]$_  
else +GU16+w~E  
insertSort(data, mid + 1, r - mid); w"iZn  
6DW|O<k^j  
for (i = l; i <= mid; i++) { ""^BW Re D  
temp = data; AHY)#|/)  
} pe})A  
for (j = 1; j <= r - mid; j++) { *XO KH+_u  
temp[r - j + 1] = data[j + mid]; o7XRa]O  
} ;i :wY&  
int a = temp[l]; ;@ X   
int b = temp[r]; s[4 !R&b  
for (i = l, j = r, k = l; k <= r; k++) { FF~4y>R7u  
if (a < b) { ~|C1$.-  
data[k] = temp[i++]; E}/|Lja  
a = temp; *8H;KGe=  
} else { L0  2~FT  
data[k] = temp[j--]; L.[uMuUa  
b = temp[j]; F|`B2Gr  
} 2{Iz  
} ^3o8F  
} '|N4fbZd  
5)NBM7h  
/** rxp9B>~  
* @param data 4(GgaQFO?  
* @param l r~_ /Jj  
* @param i VDjIs UUX  
*/ Y'0?<_ fj  
private void insertSort(int[] data, int start, int len) { TcmZ0L^O  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8z8SwWS?  
} GSnHxs)  
} W?J[K;<  
} E(+wl  
} B2qq C-hw?  
Pt0}9Q  
堆排序: '/gwC7*-&  
WTv\HI2X !  
package org.rut.util.algorithm.support; Yf)|ws?!  
[HiTR!o*  
import org.rut.util.algorithm.SortUtil; L9?/ -@M  
V^/^OR4k  
/** p<fgUVR  
* @author treeroot <O)X89dFM  
* @since 2006-2-2 (DP9& b  
* @version 1.0 NV(4wlh)y  
*/ ::R00gd  
public class HeapSort implements SortUtil.Sort{ 3=|2Gs?ut  
seU^IC<  
/* (non-Javadoc) *([)X2A@+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %R*vSRG/U  
*/ r5da/*G/O  
public void sort(int[] data) { ~nc([%!=  
MaxHeap h=new MaxHeap(); v:Z4z6M-  
h.init(data); )^>XZ*eK  
for(int i=0;i h.remove(); =*:_swd  
System.arraycopy(h.queue,1,data,0,data.length);  {%~4RZA  
} ig _<kj;Vd  
5~%,u2  
private static class MaxHeap{ Y{2d4VoW6  
-YjgS/g  
void init(int[] data){ .A!0.M|  
this.queue=new int[data.length+1]; :htq%gPex9  
for(int i=0;i queue[++size]=data; SP?U@w%}  
fixUp(size); ~& WN)r'4y  
} }Wche/g`  
} , 64t  
MAD}Tv\S7  
private int size=0; FJ(B]n[>  
TFYTvUn  
private int[] queue; T'b/]&0Tio  
$FusDdCv3  
public int get() { d:<H?~  
return queue[1]; H~dHVQtJZ  
} cI%"Ynq"3  
L}jF#*Q%  
public void remove() { =e!l=d|/  
SortUtil.swap(queue,1,size--); %V(N U_o  
fixDown(1); Ph+X{|  
} E_D ^O  
file://fixdown o%WjJ~!zL  
private void fixDown(int k) { b~r{J5x@  
int j; T<f\*1~^  
while ((j = k << 1) <= size) { >'}=.3\  
if (j < size %26amp;%26amp; queue[j] j++; c@ZS|U*(  
if (queue[k]>queue[j]) file://不用交换 T~o{woq}g  
break; Gl8&FrR  
SortUtil.swap(queue,j,k); m UWkb  
k = j; `kNi*I^  
} (\T0n[  
} 8L -4}!~C  
private void fixUp(int k) { 6vgBqn[  
while (k > 1) { `/w\2n  
int j = k >> 1;  &(1H!  
if (queue[j]>queue[k]) K/2.1o;9  
break; 3xzkZ8]/  
SortUtil.swap(queue,j,k); JS/M~8+Et  
k = j; {+"g':><  
} C1T=O  
} nJleef9  
2<'`^AO@  
} iIsEQh  
/BMtcCPG!  
} w!WRa8C  
3duG.iUlL  
SortUtil: WgA`kT  
% Cu.u)/+  
package org.rut.util.algorithm; [6; N3?+  
6X7s 4  
import org.rut.util.algorithm.support.BubbleSort; &:c:9w  
import org.rut.util.algorithm.support.HeapSort; gwSN>oj &  
import org.rut.util.algorithm.support.ImprovedMergeSort; ~^I\crx,U%  
import org.rut.util.algorithm.support.ImprovedQuickSort; dU]i-NF  
import org.rut.util.algorithm.support.InsertSort; Y5ogi )  
import org.rut.util.algorithm.support.MergeSort; X"[dQ_o  
import org.rut.util.algorithm.support.QuickSort; K8 b+   
import org.rut.util.algorithm.support.SelectionSort; ohrw\<xsu  
import org.rut.util.algorithm.support.ShellSort; ~{kM5:-iw  
"v(G7*2  
/** P</s)"@  
* @author treeroot FXx.$W  
* @since 2006-2-2 u12zRdn  
* @version 1.0 t`"^7YFS>  
*/ $ph0ag+  
public class SortUtil { #B @X  
public final static int INSERT = 1; Tu]&^[B('  
public final static int BUBBLE = 2; NJ ZXs_%>$  
public final static int SELECTION = 3; of9q"h  
public final static int SHELL = 4; cYGRy,'gH  
public final static int QUICK = 5; TH|?X0b  
public final static int IMPROVED_QUICK = 6; ?75\>NiR  
public final static int MERGE = 7; u]HS(B,ht  
public final static int IMPROVED_MERGE = 8; wms1IV%;  
public final static int HEAP = 9; 6Wj@r!u  
</.z1 $  
public static void sort(int[] data) { 4d!S#zx  
sort(data, IMPROVED_QUICK); o2DtCU-A  
} P7z:3o.  
private static String[] name={ HOE2*4r  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L 5+J ^  
}; wGPotPdE2  
q"S(7xWS  
private static Sort[] impl=new Sort[]{ ?^|QiuU:n  
new InsertSort(), O -G1})$  
new BubbleSort(), *|mz_cKu  
new SelectionSort(), zK=dzoy  
new ShellSort(), 2G?$X?  
new QuickSort(), J' W}7r  
new ImprovedQuickSort(), `h?LVD'l  
new MergeSort(), -Q#o)o  
new ImprovedMergeSort(), {VR`;  
new HeapSort() h1# S+k  
}; c4\C[$  
<P1rqM9^  
public static String toString(int algorithm){ !2z!8kI  
return name[algorithm-1]; U IfH*6X  
} /|?F)%v\  
?w*yW;V`  
public static void sort(int[] data, int algorithm) { ~ FGe ~  
impl[algorithm-1].sort(data); ]u+MTW;  
} X(]Zr  
Zd[OWF  
public static interface Sort { `fz,Lh*v  
public void sort(int[] data); :j@8L.<U  
} i X%[YQ |  
Nsn~@.UuSW  
public static void swap(int[] data, int i, int j) { M ?*Tf&  
int temp = data; 7:TO\0]2n  
data = data[j]; (= 9 wo  
data[j] = temp; MAnp{  
} )Vg2Jix,]  
} qgx?"$ Z  
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