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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。 DVl[t8K!  
插入排序: - LiPHHX<  
*:9 >W$0u  
package org.rut.util.algorithm.support; K2xH'v O(  
=0h|yjnL/  
import org.rut.util.algorithm.SortUtil; 0aC 2 Pym^  
/** Y:%m;b$]  
* @author treeroot drENkS=,  
* @since 2006-2-2 |,;twj[?4  
* @version 1.0 b+IOh|  
*/ 3zB|!p C6s  
public class InsertSort implements SortUtil.Sort{ 7k[pvd|L  
9$o<  
/* (non-Javadoc) EK?@Z.q+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G; C8Kde  
*/ {jOzap|  
public void sort(int[] data) { T+;H#&  
int temp; K[uY+!'1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -".kH<SWv  
} mA(nyF  
} "mPSA Z  
} SqXy;S@  
(@)2PO /  
} q]"2hLq  
F1gt3 ae  
冒泡排序: <rX \LwR  
=6cyE  
package org.rut.util.algorithm.support; -(\1r2 Y  
K`Bq(z?/  
import org.rut.util.algorithm.SortUtil; nTys4 R  
euV$2Fg  
/** qr)v'aC3  
* @author treeroot <.,RBo  
* @since 2006-2-2 L#`2.nU  
* @version 1.0 4>4V-m\  
*/ ;w`sz.  
public class BubbleSort implements SortUtil.Sort{ *A?8F"6>  
{ExII<=6  
/* (non-Javadoc) JFkN=YR8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WI1T?.Gc   
*/ :7p9t.R<$h  
public void sort(int[] data) { {I0w`xe  
int temp; ePp[m zg6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ l`@0zw+  
if(data[j] SortUtil.swap(data,j,j-1); oL<BLr9>  
} 3ty4D2y  
} {Q5KV%F_  
} "7=bL7wM&  
} J>`v.8y  
Mv.Ciyc  
} iH-bo@  
2E$^_YT C  
选择排序: Hf VHI1f  
z)4UMR#b&  
package org.rut.util.algorithm.support; ;>NP.pnA)  
_*s~`jn{H  
import org.rut.util.algorithm.SortUtil; }@Xh xZu  
+J|+es  
/** i[$-_  
* @author treeroot pw@`}cM=  
* @since 2006-2-2 a9[mZVMgUK  
* @version 1.0 i=oTg  
*/ OmB TA=E<  
public class SelectionSort implements SortUtil.Sort { ,H>W:O  
XZ.7c{B<  
/* bqSMDK  
* (non-Javadoc) h`=r )D  
* }@d>,1DU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pe|X@o  
*/ 'gCJ[ce  
public void sort(int[] data) { l+%Fl=Q2em  
int temp; 4~!Eje!  
for (int i = 0; i < data.length; i++) { >Q; g0\I_  
int lowIndex = i; O?CdAnhQc`  
for (int j = data.length - 1; j > i; j--) { d] U`?A,  
if (data[j] < data[lowIndex]) { YWEYHr;%^?  
lowIndex = j; 6`acg'sk>  
} o`idg[l.  
} K[kds`  
SortUtil.swap(data,i,lowIndex); a$d:_,\ "  
} G.E[6G3  
} 7 0_}S*T  
Y?<)Dg.[  
} Gb;99mE  
Cl,9yU)1n  
Shell排序: elu=9d];@  
* -0>3  
package org.rut.util.algorithm.support; jh[ #p?:  
H"eS<eT  
import org.rut.util.algorithm.SortUtil; `%e|$pK  
;AKwx|I$g  
/** B`i$Wt<7  
* @author treeroot j_p`Ng  
* @since 2006-2-2 !x>,N%~  
* @version 1.0 69>/@<   
*/ ymYBm: "  
public class ShellSort implements SortUtil.Sort{ 80C(H!^  
kVd5,Qd  
/* (non-Javadoc) 0Z"s_r}h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `?l3Ct*  
*/ 6D|p Qs  
public void sort(int[] data) { "?35C !  
for(int i=data.length/2;i>2;i/=2){ F% `zs\  
for(int j=0;j insertSort(data,j,i); S_6g~PHsr  
} oB p3JX9_f  
} Nb0Ik/:<  
insertSort(data,0,1); K4:  $=  
} e!GZSk   
Goxl3LS<  
/** HmMO*k<6@  
* @param data &:<, c12  
* @param j 1RLym9JN  
* @param i `{[RjM`  
*/ u"`*DFjo*  
private void insertSort(int[] data, int start, int inc) { *7ZtNo[+  
int temp; #.H}r6jqs  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); X3<K 1/<  
} P;73Hr[E#  
} \8{\;L C  
} 1c$vLo832  
=>qTNh*'  
} A{N\)  
M diw Ri  
快速排序: b?8)7.{F{  
4ZwKpQ6  
package org.rut.util.algorithm.support; \w%@?Qik  
"N 3)Qr  
import org.rut.util.algorithm.SortUtil; J? .F\`N)  
L_Q S0_1  
/** (!3;X"l  
* @author treeroot BgM%+b8u  
* @since 2006-2-2 -}P7$|O &  
* @version 1.0 ]W/>Ldv  
*/ 3@_Elu  
public class QuickSort implements SortUtil.Sort{ zyFUl%  
L0L2Ns  
/* (non-Javadoc) \9/RAY_G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a7#?h%wf  
*/ 1'JD=  
public void sort(int[] data) { 0OnV0SIL  
quickSort(data,0,data.length-1); vQ1 v# Z  
} nn+_TMu  
private void quickSort(int[] data,int i,int j){ u#@RM^738d  
int pivotIndex=(i+j)/2; 2z\e\I  
file://swap MG{l~|\x)  
SortUtil.swap(data,pivotIndex,j); rQb7?O@-  
-R b{^/  
int k=partition(data,i-1,j,data[j]); _[t8rl  
SortUtil.swap(data,k,j); eVJ^\z:4  
if((k-i)>1) quickSort(data,i,k-1); @}&_Dvf  
if((j-k)>1) quickSort(data,k+1,j); $=)gpPT  
?IF)+]  
} du_4eB  
/** lyv4fP  
* @param data >P=Q #;v  
* @param i rzUlO5?R=  
* @param j aJzLrX  
* @return cE\>f8 I  
*/ !Ms[eB  
private int partition(int[] data, int l, int r,int pivot) { mV)+qXC  
do{ pr&=n;_ n  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]Y`Ib0$  
SortUtil.swap(data,l,r); ]JXKZV8$0  
} [M%._u,  
while(l SortUtil.swap(data,l,r); 69OF_/23  
return l; ac8P\2{"  
} 2YlH}fnH  
j.%K_h?V5  
} S\=1_LDx"  
-1u9t4+`  
改进后的快速排序: .4-,_`T?  
n}?wVfEy  
package org.rut.util.algorithm.support; \)/yC74r7(  
!5Sd2<N  
import org.rut.util.algorithm.SortUtil; +?dl`!rE  
VUwC-)  
/** xfFg,9w8  
* @author treeroot gE])!GMM3  
* @since 2006-2-2 M{mSd2  
* @version 1.0 {A:j[  
*/ :J/M,3  
public class ImprovedQuickSort implements SortUtil.Sort { t9cl"F=  
=0    
private static int MAX_STACK_SIZE=4096; ~ G6"3"  
private static int THRESHOLD=10; 4(8xjL:  
/* (non-Javadoc) +&i +Mpb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vsnuy8~k  
*/ S/tIwG ~e3  
public void sort(int[] data) { Ig6T g ?  
int[] stack=new int[MAX_STACK_SIZE]; . (}1%22  
/.z;\=;[n!  
int top=-1; i'#Gy,R  
int pivot; y3G `>  
int pivotIndex,l,r; bZ1 78>J]  
r] Lc9dL  
stack[++top]=0; ~Z'w)!h  
stack[++top]=data.length-1; #oni:]E!m  
{Ui =b+  
while(top>0){ T~:|!`  
int j=stack[top--]; .6f%?oo  
int i=stack[top--]; ,yd=e}lQx  
_zWfI.o  
pivotIndex=(i+j)/2; T0zn,ej  
pivot=data[pivotIndex]; De&6 9  
.iD*>M:W  
SortUtil.swap(data,pivotIndex,j); !\Xm!I8  
"Wo,'8{v  
file://partition NnT g3:.  
l=i-1; 9f+>ix,ek*  
r=j; C3NdE_E  
do{ \ZU1J b1c  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }Gyqq6Aeb  
SortUtil.swap(data,l,r); VVP:w%yW  
} hvka{LD  
while(l SortUtil.swap(data,l,r); sarq`%zrk  
SortUtil.swap(data,l,j); ',^+bgs5  
Uyx!E4pl(  
if((l-i)>THRESHOLD){ -Go 7"j  
stack[++top]=i; r.ZF_^y}+  
stack[++top]=l-1; L|@y&di  
} qqrq11W  
if((j-l)>THRESHOLD){ svf|\p>]H  
stack[++top]=l+1; !V 2/A1?  
stack[++top]=j; G  uQ=gN  
} GVHV =E  
Xce0~\_ A  
} >K9#3 4hP  
file://new InsertSort().sort(data); jw<pK4?y  
insertSort(data); 29CINC  
} a ] =  
/** }v:jncp  
* @param data %wcSM~w  
*/ :+Om]#`Vls  
private void insertSort(int[] data) { } :=Tm]S  
int temp; `K~AhlJUQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &e-U5'(6v_  
} B33$pUk  
} 4lhw3,5  
} @Z>ZiU,^  
'52~$z#m  
} w }Uhd ,  
)9l^O  
归并排序: !l]dR@e  
J:&[ 59  
package org.rut.util.algorithm.support; WOuEWw=  
AdRX`[ik  
import org.rut.util.algorithm.SortUtil; ^uv<6  
mKo C.J  
/** !aO` AC=5u  
* @author treeroot 9z)5Mdf1j  
* @since 2006-2-2 w?kJ+lmOQy  
* @version 1.0 dT,o=8fg  
*/ "BX!  
public class MergeSort implements SortUtil.Sort{ {ZY+L;eg1  
4jD2FFG- G  
/* (non-Javadoc) {43>m)8+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y%`xDI  
*/ Uf}\p~;  
public void sort(int[] data) { C4TE-OM8  
int[] temp=new int[data.length]; s(X;Eha  
mergeSort(data,temp,0,data.length-1); UfS%71l.$  
} p+)YTzzc  
3U_2!zF3_  
private void mergeSort(int[] data,int[] temp,int l,int r){ V<k8N^  
int mid=(l+r)/2; C8z{XSo  
if(l==r) return ; da)NK!  
mergeSort(data,temp,l,mid); [1.+H yJ}  
mergeSort(data,temp,mid+1,r); @v}/zS  
for(int i=l;i<=r;i++){ V5*OA??k<  
temp=data; g8PTGz  
} B&D}F=U  
int i1=l; 6k#Jpmmr  
int i2=mid+1; `ZC<W]WYX/  
for(int cur=l;cur<=r;cur++){ y!!2WHvE  
if(i1==mid+1) L:@7tc.  
data[cur]=temp[i2++]; +\v?d&.f0  
else if(i2>r) pb~pN  
data[cur]=temp[i1++]; dAy?EO0\7  
else if(temp[i1] data[cur]=temp[i1++]; KtNY_&xd  
else )7h$G-fe  
data[cur]=temp[i2++]; rRFhGQq1m  
} D_vbSF)  
} itC-4^  
Ja9e^`i;  
} uu`G 2[t  
l+V>]?j  
改进后的归并排序: 8<Hf" M  
5LOo8xN  
package org.rut.util.algorithm.support; ,c NLkoN  
KZ/=IP=  
import org.rut.util.algorithm.SortUtil; K'GBMnjD  
/~3r;M  
/** thhwN A  
* @author treeroot s_mS^`P7  
* @since 2006-2-2 yj\Nkh  
* @version 1.0 P-9<YN  
*/ %$b:X5$Z  
public class ImprovedMergeSort implements SortUtil.Sort { z*-2.}&U<  
A{A\RSZ0  
private static final int THRESHOLD = 10; ?!+MM&c-n  
[UH||qW  
/* NX}<*b/  
* (non-Javadoc) R6(oZph  
* 9g<7i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =zz ~kon9  
*/ #"B\UN  
public void sort(int[] data) { :8OZ#D_Hl  
int[] temp=new int[data.length]; M]J ^N#  
mergeSort(data,temp,0,data.length-1); O&Y*pOg  
} pej|!oX  
9g mW&{6q  
private void mergeSort(int[] data, int[] temp, int l, int r) { &wV]"&-  
int i, j, k; K57&yVX  
int mid = (l + r) / 2; qw^uPs7Uw  
if (l == r) adR)Uq9  
return; 3xaR@xjS  
if ((mid - l) >= THRESHOLD) cH&J{WeZa  
mergeSort(data, temp, l, mid); ,LnII  
else w9bbMx  
insertSort(data, l, mid - l + 1); ;<ZLc TL  
if ((r - mid) > THRESHOLD) S Em Q@1  
mergeSort(data, temp, mid + 1, r); | AozR ~  
else N(Tz%o4  
insertSort(data, mid + 1, r - mid); @"^0%/2-  
hbY5l}\5  
for (i = l; i <= mid; i++) { N'GeHByIT  
temp = data; |E JD3 &  
} BW$"`T@c6~  
for (j = 1; j <= r - mid; j++) { (^Y~/  
temp[r - j + 1] = data[j + mid]; &__es{;P  
} r/u A.Aou^  
int a = temp[l]; y#3j`. $3p  
int b = temp[r]; ?k(7 LX0j  
for (i = l, j = r, k = l; k <= r; k++) { `)_dS&_\  
if (a < b) { r2,.abo  
data[k] = temp[i++]; N(Fp0  
a = temp; UdpF@Q  
} else { oY933i@l)P  
data[k] = temp[j--]; zdYy^8V|z  
b = temp[j]; =\H!GT  
} d^{RQ   
} |Uc_G13Y{D  
} (pv+c,  
6G[4rD&  
/** .K1FKC$C  
* @param data 8@MV%MVy$  
* @param l vH :LQ!2  
* @param i ww], y@da  
*/ R}*_~7r5  
private void insertSort(int[] data, int start, int len) { 8Dj c c z  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *%%g{ 3$  
} VHIOwzC  
} 0Ziw_S\d&s  
} P\1L7%*lU  
} ;V*l.gr'2  
a,k>Q`  
堆排序: i3 @)W4{  
(>nGQS]H  
package org.rut.util.algorithm.support; w9< R#y[A  
&L'Dqew,*  
import org.rut.util.algorithm.SortUtil; {xXsBh Y  
>n'o*gZM  
/** 1H6<[iHW  
* @author treeroot "@iK' c^  
* @since 2006-2-2 :bwjJ}F  
* @version 1.0 pKpUXfQu  
*/ X-K=!pET  
public class HeapSort implements SortUtil.Sort{ w n/_}]T  
L~lxXTG\  
/* (non-Javadoc) /|C*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u)}$~E>  
*/ =8AO:  
public void sort(int[] data) { Lr$go6s  
MaxHeap h=new MaxHeap(); dfKF%27  
h.init(data); pNepC<rY  
for(int i=0;i h.remove(); xhV O3LW'  
System.arraycopy(h.queue,1,data,0,data.length); jB%lB1Q|  
} n<O}hM ZT  
2bw_IT  
private static class MaxHeap{ }$SavB#SBP  
k_ & :24Lj  
void init(int[] data){ mr*JJF0Z  
this.queue=new int[data.length+1]; ON=@ O  
for(int i=0;i queue[++size]=data; 7%Gwc?[x  
fixUp(size); J?? -j  
} g jDh?I  
} 1OCeN%4]Qk  
o<BOYrS  
private int size=0; ?!A7rb/tj  
5m\<U`  
private int[] queue; 8']M^|1  
e7Xeo+/  
public int get() { 6#7Lm) g8  
return queue[1]; m$}R%  
} Wbr|_W  
!t$'AoVBq  
public void remove() { r`W)0oxD  
SortUtil.swap(queue,1,size--); EofymAi%  
fixDown(1); >,gg5<F-E  
} x@P y>f2  
file://fixdown 52:HNA\E/  
private void fixDown(int k) { :61Tun  
int j; uki#/GzaO  
while ((j = k << 1) <= size) { Cl; oi}L  
if (j < size %26amp;%26amp; queue[j] j++; Rdvk ml@@  
if (queue[k]>queue[j]) file://不用交换 DFZkh^PFd  
break; I`-8Air5f  
SortUtil.swap(queue,j,k); 5na~@-9p  
k = j; Uc7mOa}4  
} S?1AFI9{   
} ` Q|*1  
private void fixUp(int k) { (eI5_`'VC  
while (k > 1) { JjPKR?[>  
int j = k >> 1; PF)jdcX  
if (queue[j]>queue[k]) K1mPr^3rC  
break; *"?l]d  
SortUtil.swap(queue,j,k); *6sl   
k = j; Cn'(<bl  
} *SU\ABcov  
} U`R5'Tf;  
R "n 5  
} ^U `[(kz=  
Ixb=L (V  
} 2|3)S`WZl  
:o0JY= 5  
SortUtil: ;&< {ey  
"?]{ %-u  
package org.rut.util.algorithm; iHeN9 cl  
z:8eEq3w  
import org.rut.util.algorithm.support.BubbleSort; 3h;{!|-3  
import org.rut.util.algorithm.support.HeapSort; <sWprR  
import org.rut.util.algorithm.support.ImprovedMergeSort; h1B? 8pD  
import org.rut.util.algorithm.support.ImprovedQuickSort; qaiNz S@q  
import org.rut.util.algorithm.support.InsertSort; &+Z,hs9%  
import org.rut.util.algorithm.support.MergeSort; !\zWF  
import org.rut.util.algorithm.support.QuickSort; jN{Xfjmfv  
import org.rut.util.algorithm.support.SelectionSort; sD{Wxv  
import org.rut.util.algorithm.support.ShellSort; F_w Z"e6  
P\yDa*m  
/** {P*pk c  
* @author treeroot \|H!~)h$1  
* @since 2006-2-2 %eX{WgH  
* @version 1.0 E@@5BEB ~  
*/ 'Y*E<6:  
public class SortUtil { ',Y.v"']4  
public final static int INSERT = 1; H5DC[bZMb%  
public final static int BUBBLE = 2; xbdN0MAU  
public final static int SELECTION = 3; rM`X?>iT+  
public final static int SHELL = 4; iq8Grd L"  
public final static int QUICK = 5; {IxA)v-`  
public final static int IMPROVED_QUICK = 6; jr)1(**  
public final static int MERGE = 7; (!ZM{Js%  
public final static int IMPROVED_MERGE = 8; Q\^O64geD  
public final static int HEAP = 9; S=5<^o^h3  
OVm\  
public static void sort(int[] data) { /xsF90c\h  
sort(data, IMPROVED_QUICK); }+)fMZz  
} gp5_Z-me  
private static String[] name={ 9!6f-K  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^N7e76VwR  
}; sF|5XjQ  
DgUT5t1  
private static Sort[] impl=new Sort[]{ RHmgD;7`  
new InsertSort(), >"|B9Woc  
new BubbleSort(), %SX|o-B~.o  
new SelectionSort(), o C<.=2]  
new ShellSort(), g<l1zo`_  
new QuickSort(), JSkLEa~<  
new ImprovedQuickSort(), S)cLW~=z  
new MergeSort(), I9/W;# *~  
new ImprovedMergeSort(), r"C  
new HeapSort() SQ44  
}; ^Y=\#-Dd  
k3u "A_"c  
public static String toString(int algorithm){ G0/4JSH  
return name[algorithm-1]; [<2<Y  
} P^ A!.}d  
{9?JjA  
public static void sort(int[] data, int algorithm) { uD}2<$PP  
impl[algorithm-1].sort(data); fmQ_P.c  
} BcL{se9<  
~<O7$~  
public static interface Sort { :yRo3c  
public void sort(int[] data); D ~stM  
} `7[EKOJ3g  
5"CZh.J  
public static void swap(int[] data, int i, int j) { igIRSN}h  
int temp = data; 3Ndq>  
data = data[j];  8cU}I4|  
data[j] = temp; y+X2Pl  
} M.x=<:upp  
} gnFr}L&j  
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