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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。 F*QGzbv)  
插入排序: i),W1<A1  
^X^4R1V)  
package org.rut.util.algorithm.support; X[R/j*K  
DEs/?JZG  
import org.rut.util.algorithm.SortUtil; ,2"-G";!f\  
/** k5((@[  
* @author treeroot 7Kfh:0Ihhy  
* @since 2006-2-2 Q~nc:eWD  
* @version 1.0 NI3_wV  
*/ `U)~fu/\2M  
public class InsertSort implements SortUtil.Sort{ 1%H]2@  
8!1vsEqv  
/* (non-Javadoc) 4jvgyi 9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t|1?mH9  
*/ W@ #Y/L:${  
public void sort(int[] data) { %;GDg3L[p  
int temp; _Y=>^K]9K  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?,]25q   
} oTZNW  
} ^[2A< g  
} k5(@n>p  
TC'tui  
} Q 1g@FsW&U  
M*|x,K=U  
冒泡排序: Mc9%s$MT  
N\rbnr  
package org.rut.util.algorithm.support; fs\l*nBig  
g$~ktr+%  
import org.rut.util.algorithm.SortUtil; Nw8lg*t"  
=j6f/8   
/** Dr&2q X!  
* @author treeroot c5pF?kFaD  
* @since 2006-2-2 &0~E+ 9b  
* @version 1.0 8ex{N3  
*/ Hr:WE+'  
public class BubbleSort implements SortUtil.Sort{ LNtBYdB`pK  
A?=g!(wB  
/* (non-Javadoc) Ng2qu!F7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kU0e;r1N  
*/ nKT\/}d  
public void sort(int[] data) { l@%MS\{  
int temp; YRqIC -_  
for(int i=0;i for(int j=data.length-1;j>i;j--){ }O-|b#Q  
if(data[j] SortUtil.swap(data,j,j-1); `J#(ffo-  
} DR;rK[f  
} rUR{MF&]D  
} O$+0 .  
} O)n"a\LD  
eNR>W>;'  
} `;L>[\Xi  
JdF;*`_7*  
选择排序: ycTX\.KV  
> X<pzD3u  
package org.rut.util.algorithm.support; rLtB^?A z  
,E<(K8  
import org.rut.util.algorithm.SortUtil; R_`i=>Z-  
:2vk vLM  
/** zuwlVn  
* @author treeroot F|Pf-.r`t  
* @since 2006-2-2 akoK4!z  
* @version 1.0 +iY.YV  
*/ R.-2shOE'  
public class SelectionSort implements SortUtil.Sort { @lRTp  
9ePG-=5I  
/* %We~k'2f  
* (non-Javadoc) ci a'h_w  
* nkUSd}a`r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EBc_RpC/Z  
*/ V4PI~"4q#1  
public void sort(int[] data) { hCS|(8g  
int temp; 4$ya$Y%s%  
for (int i = 0; i < data.length; i++) { Js.2R$o =*  
int lowIndex = i; ihS;q6ln  
for (int j = data.length - 1; j > i; j--) { wylbs@  
if (data[j] < data[lowIndex]) { qj/ pd 7\  
lowIndex = j; ?RNm8,M  
} &NM.}f  
} DryN}EMOKD  
SortUtil.swap(data,i,lowIndex); MEf`&<t  
} M{w[hV  
} `lygJI?H+{  
FxeDjAP  
} e)"] H*  
?NkweT(  
Shell排序: ,T& =*q  
O eLM*Zi  
package org.rut.util.algorithm.support; d^p af  
%&w 8E[  
import org.rut.util.algorithm.SortUtil; [$:M/5y9  
Ws$<B b  
/** 7L)edR [  
* @author treeroot $R6iG\V5  
* @since 2006-2-2 ++1<A& a  
* @version 1.0 R9bsl.e  
*/ T%zCAfx m  
public class ShellSort implements SortUtil.Sort{ J)tk<&X  
sxc^n aK0  
/* (non-Javadoc) ;r'y/ Y'?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .LMOmc=(  
*/ B /q/6Pp  
public void sort(int[] data) { IdTa tE|^  
for(int i=data.length/2;i>2;i/=2){  qmQ}  
for(int j=0;j insertSort(data,j,i); :4JqT|nS  
} q=Xda0c  
} 742 sqHx  
insertSort(data,0,1); a_}k^zw(  
} =)QtE|p,77  
{<$ D|<S  
/** %8C,9q  
* @param data d^b(Uo=$  
* @param j z 3((L  
* @param i d+DdDr  
*/ CWKN0HB  
private void insertSort(int[] data, int start, int inc) { ^K[WFiN}  
int temp; k+qxx5{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F9h'.{@d  
} J5Pi"U$FkY  
} &ed&2t`Y  
} bT93R8yp  
' b?' u  
} Em6P6D>S>,  
vl}fC@%WRI  
快速排序: TEB<ia3+  
bzj9U>eY  
package org.rut.util.algorithm.support; cl2+,!:  
TgC8EcLr  
import org.rut.util.algorithm.SortUtil; 'DLgOUvh  
10.u  
/** I'sq0^  
* @author treeroot `eZ +Pf".  
* @since 2006-2-2 -!_\4  
* @version 1.0 1=o|[7  
*/ `wGP31Y.  
public class QuickSort implements SortUtil.Sort{ ,^Ug[pGG-  
^ &UezDTS  
/* (non-Javadoc) ppYIVI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0 $Ygt0d  
*/ "p Rr>Fa  
public void sort(int[] data) { `3wzOMgJ  
quickSort(data,0,data.length-1); t?&@bs5~g  
} Xgb ~ED]  
private void quickSort(int[] data,int i,int j){ sWtT"7>x  
int pivotIndex=(i+j)/2; q!fdiv`  
file://swap /i !3Fr"  
SortUtil.swap(data,pivotIndex,j); Uw`YlUT\  
J)kH$!csi  
int k=partition(data,i-1,j,data[j]); yLFZo"r  
SortUtil.swap(data,k,j); $RAS pM  
if((k-i)>1) quickSort(data,i,k-1); $nf5bo/;  
if((j-k)>1) quickSort(data,k+1,j); g#W/WKvM  
XEX ."y  
} (v/mKGyg  
/** &Hl*Eg f  
* @param data 3P}^Wu  
* @param i N*mm[F2+F  
* @param j O4c[,Uq8~  
* @return 85{2TXQ^%=  
*/ Nd;)V  
private int partition(int[] data, int l, int r,int pivot) { lhk=yVG3  
do{ 8?yRa{'"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WSi`KNX  
SortUtil.swap(data,l,r); :NCY6? [Dz  
} s8O.yL  
while(l SortUtil.swap(data,l,r); (Ci{fY6`  
return l; !<EQVqj6  
} pwIu;:O!?  
UgqfO(  
} QXaE2}}P  
th :I31  
改进后的快速排序: n7A %y2  
'nx";[6(  
package org.rut.util.algorithm.support; Q|$?d4La8  
2bnF#-(  
import org.rut.util.algorithm.SortUtil; DTx!# [  
o)B`K."  
/** 3QZ~t#,7ij  
* @author treeroot O>vbAIu  
* @since 2006-2-2 tMy<MO)Ei  
* @version 1.0 U07 G&? /  
*/ tJ qd  
public class ImprovedQuickSort implements SortUtil.Sort { AiDV4lHr  
=cP7"\  
private static int MAX_STACK_SIZE=4096; BH;7CK=7R  
private static int THRESHOLD=10; ~ZxFL$<'3  
/* (non-Javadoc) Y-ZTv(<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bu{1^g:  
*/ X:/Y^Xu  
public void sort(int[] data) { dv7IHUFf  
int[] stack=new int[MAX_STACK_SIZE]; 3Yb2p!o  
B* hW  
int top=-1; }Ghh%]  
int pivot; 'F .tOD  
int pivotIndex,l,r; )@hG#KMK  
+k?0C?/T;  
stack[++top]=0; RZL:k;}5  
stack[++top]=data.length-1; =rL^^MZp  
2 D vKW%;  
while(top>0){ lFZ}.  
int j=stack[top--]; 0hCrEM!8  
int i=stack[top--]; CS\ E]f  
^1}Y=! &  
pivotIndex=(i+j)/2; h ycdk1SN  
pivot=data[pivotIndex]; 13f@Ox$  
z>&|:VGG  
SortUtil.swap(data,pivotIndex,j); QE\t}>  
xlHC?d0}  
file://partition +<TnE+>j  
l=i-1; s0/[mAY  
r=j; "'9[c"Iz  
do{ 3B^`xnV  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); FVo_=O)  
SortUtil.swap(data,l,r); 4\rwJD<  
} HuRq0/"  
while(l SortUtil.swap(data,l,r); pIbm)-  
SortUtil.swap(data,l,j); E4;@P']`  
pI]tv@>:f  
if((l-i)>THRESHOLD){ e^ ZxU/e  
stack[++top]=i; #y2IHO-  
stack[++top]=l-1; g=q1@)  
} ~ MZEAY9  
if((j-l)>THRESHOLD){ gOSFvH8FU  
stack[++top]=l+1; %@Ow.7zh  
stack[++top]=j; =,HxtPJ  
} !h[xeLlU  
a%igc^GS2  
} VAL]\@Q}  
file://new InsertSort().sort(data); 5p]Cwj<u  
insertSort(data); wiE'6CM  
} M7x*LiKc2  
/** tUXly|k  
* @param data Q.zE}ZS  
*/ \(g/::|  
private void insertSort(int[] data) { +jifbf-  
int temp; f*HEw  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WA1h|:Z  
} w15Qqh lK  
} UifuRmn  
} $sa5aUg }  
f*tKj.P  
} piPx8jT`F  
}s>.Fh  
归并排序: Fr{}~fRW<  
7{fOo%(7  
package org.rut.util.algorithm.support; J}M_Ka  
uNoP8U%*  
import org.rut.util.algorithm.SortUtil; !YZ$WiPl  
WNo",Vc  
/** L?:fyNA3[  
* @author treeroot FQp@/H^  
* @since 2006-2-2 /jB 0  
* @version 1.0 1v2pPUH\  
*/ %'`L+y  
public class MergeSort implements SortUtil.Sort{ 3~5 %6`  
7LZ A!3  
/* (non-Javadoc) \fjr`t]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Js?@  
*/ {S*:pG:+q  
public void sort(int[] data) { +`_Km5=  
int[] temp=new int[data.length]; C#3K.0a  
mergeSort(data,temp,0,data.length-1); R|OY5@  
} :.J]s<J(F  
"'zVwU  
private void mergeSort(int[] data,int[] temp,int l,int r){ N |nZf5{  
int mid=(l+r)/2; +[C><uP  
if(l==r) return ; \'[C_+;X  
mergeSort(data,temp,l,mid); 5<=ktA48[  
mergeSort(data,temp,mid+1,r); W%,h{  
for(int i=l;i<=r;i++){ FsTl@zN  
temp=data; 2z+-vT%  
} |on$ )vm  
int i1=l; 9&VfbrBM  
int i2=mid+1; Du7DMo=l  
for(int cur=l;cur<=r;cur++){ o+F]80CH  
if(i1==mid+1) )Co&(;zf  
data[cur]=temp[i2++]; f0Zn31c^  
else if(i2>r) \-eDNwJ:#@  
data[cur]=temp[i1++]; ?x-:JME0  
else if(temp[i1] data[cur]=temp[i1++]; {DVu* %|  
else PD$@.pib  
data[cur]=temp[i2++]; '3'*VcL(  
} _1EWmHZ?  
} ! {c"C  
Z7:TPY$b  
} Sn~h[s_(  
sY*iRq  
改进后的归并排序: ]Ac&h aAP  
-!JnyD   
package org.rut.util.algorithm.support; \Ng|bWR>LQ  
gPYF2m  
import org.rut.util.algorithm.SortUtil; %`b %TH^  
XI8rU)q  
/** tLc 9-  
* @author treeroot rV6SN.  
* @since 2006-2-2 n)6mfoe  
* @version 1.0 W^sH|2g  
*/ ZlEH3-Zv  
public class ImprovedMergeSort implements SortUtil.Sort { KDUa0$"  
4qe!+!#$  
private static final int THRESHOLD = 10; \&Bvh4Q  
stcbM  
/* d|Q_Z@;JF  
* (non-Javadoc) 530Z>q  
* H}}g\|r&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %"{jNC?  
*/ [t.x cO  
public void sort(int[] data) { ?Gr2@,jlD  
int[] temp=new int[data.length]; 6Q}WX[| tQ  
mergeSort(data,temp,0,data.length-1); D qh rg;  
} =U)e_q  
F `cuV  
private void mergeSort(int[] data, int[] temp, int l, int r) { rM5{R}+;  
int i, j, k; /_g-w93   
int mid = (l + r) / 2; pipO ,n  
if (l == r) C_q@ixF{  
return; B4d\4S_r%  
if ((mid - l) >= THRESHOLD) NL7CeHs5  
mergeSort(data, temp, l, mid); _Vl22'wl  
else t;2\(_A  
insertSort(data, l, mid - l + 1); s+RSAyU  
if ((r - mid) > THRESHOLD) M+lj g&fy  
mergeSort(data, temp, mid + 1, r); f 3t&Bcw$  
else c u:1|gt  
insertSort(data, mid + 1, r - mid); xfsf  
kH9P(`;Vq  
for (i = l; i <= mid; i++) { .*_uXQ  
temp = data; B!X;T9^d  
} F\U^-/0,  
for (j = 1; j <= r - mid; j++) { ,ag:w<km  
temp[r - j + 1] = data[j + mid]; $V?h68[c  
} 6Rcl HU  
int a = temp[l]; BGO!c[-  
int b = temp[r]; C!%\cy%Xj  
for (i = l, j = r, k = l; k <= r; k++) { 20Rj Rd  
if (a < b) { r'5~4'o$  
data[k] = temp[i++]; ,y%4QvG7a  
a = temp; :K]&rGi,  
} else { <{xU.zp'  
data[k] = temp[j--]; zFpM\{`[g  
b = temp[j]; G:k]tZ*`  
} ugT;NB  
} $ &III  
} d} {d5-_a  
2$OI(7b=  
/** sH_5.+,`  
* @param data h|Z%b_a  
* @param l %D9,Femt  
* @param i o:x,zfW  
*/ Z'F=Xw6;b  
private void insertSort(int[] data, int start, int len) { $22_>OsA  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -o`Eka!ELz  
} c@&-c[k^W  
} rz'A#-?'oG  
} IA$)E  
} %40uw3  
l%^VBv> 2  
堆排序: 0[SJ7k19  
S.Rqu+  
package org.rut.util.algorithm.support; S( nZ]QEG  
g4"0:^/  
import org.rut.util.algorithm.SortUtil;  |)'6U3  
=}h8Cl{H/  
/** Q3OGU}F  
* @author treeroot w,/&oe5M+  
* @since 2006-2-2 E` O@UW@  
* @version 1.0 ,-[e{=Cz  
*/ dH8^\s .F  
public class HeapSort implements SortUtil.Sort{ '1u!@=.\G  
ZA>p~Zt  
/* (non-Javadoc) Y  c]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .>A`FqV$~+  
*/ RqnT*  
public void sort(int[] data) { p#fd+  
MaxHeap h=new MaxHeap(); Kx[u9MD  
h.init(data); 93+p~?  
for(int i=0;i h.remove(); gs?=yNL  
System.arraycopy(h.queue,1,data,0,data.length); G5K_e:i  
} _pM~v>~*+  
3\~ RWoB0u  
private static class MaxHeap{ >^\}"dEvr  
BEfp3|Stb  
void init(int[] data){ .NOh[68'  
this.queue=new int[data.length+1]; kl&9M!;:n  
for(int i=0;i queue[++size]=data; <ic%c/mN  
fixUp(size); {y0`p1  
} s1/:Ts[3i  
} t^Hte^#S  
V/; / &  
private int size=0; SA1| 7  
p l.D h  
private int[] queue; cI g|sn  
}% m:^*@$9  
public int get() { gOnVN6  
return queue[1]; @j vF[wi;  
} !~Am1\02  
qwz_.=5E6  
public void remove() { K;fRDE) {  
SortUtil.swap(queue,1,size--); UCv9G/$  
fixDown(1); XX@@tzN  
} NjL^FqA[  
file://fixdown )X dpzWod  
private void fixDown(int k) { }>|!Mf]W?R  
int j; beN(7jo  
while ((j = k << 1) <= size) { Q8^fgI|  
if (j < size %26amp;%26amp; queue[j] j++; _#2AdhCu  
if (queue[k]>queue[j]) file://不用交换 Q, 1TD 2)h  
break; x<-n}VK\  
SortUtil.swap(queue,j,k); equTKM  
k = j; 8T2iqqG/1  
} kS@6'5U  
} _r6aLm2n  
private void fixUp(int k) { 8&0+Az"{O  
while (k > 1) { >gqd y*Bg  
int j = k >> 1; %%=PpKYtSD  
if (queue[j]>queue[k]) AlQE;4yX  
break; $u`v k|\R  
SortUtil.swap(queue,j,k); 4z$}e-  
k = j; yhBf%m  
} a/(IvOy#6  
} /%'>?8/  
@&7|Laa  
} U <|h4'(@L  
%I&[:  
} ;g M$%!&  
sdWu6?B_  
SortUtil: :mpR}.^hv  
ND3(oes+;K  
package org.rut.util.algorithm; q!5 *) nw"  
!oDX+hd,%>  
import org.rut.util.algorithm.support.BubbleSort; { 4(E @  
import org.rut.util.algorithm.support.HeapSort; $Bd13%>)  
import org.rut.util.algorithm.support.ImprovedMergeSort; T<\!7 RnLc  
import org.rut.util.algorithm.support.ImprovedQuickSort; s?j` _ B  
import org.rut.util.algorithm.support.InsertSort; C6-71 `C0  
import org.rut.util.algorithm.support.MergeSort; z 5T_  
import org.rut.util.algorithm.support.QuickSort; x-Cy,d:YX  
import org.rut.util.algorithm.support.SelectionSort; l_Ffbs_6t  
import org.rut.util.algorithm.support.ShellSort; qBkI9H  
t mCm54  
/** &$!'Cw`,  
* @author treeroot J#pl7q)^w  
* @since 2006-2-2 "gR W91 T  
* @version 1.0 3*DwXH+  
*/ y].vll8R  
public class SortUtil { RH+'"f  
public final static int INSERT = 1; b.<>CG'  
public final static int BUBBLE = 2; ns{BU->f  
public final static int SELECTION = 3; ;T6x$e  
public final static int SHELL = 4; j#`d%eQ~J  
public final static int QUICK = 5; @L)=epC  
public final static int IMPROVED_QUICK = 6; [ NSsT>C  
public final static int MERGE = 7; X)tf3M {J@  
public final static int IMPROVED_MERGE = 8; \U1fUrw$*  
public final static int HEAP = 9; s /? &H-  
cP4K9:k  
public static void sort(int[] data) { k>N >_{\  
sort(data, IMPROVED_QUICK); -]uN16\ F  
} ?&H1C4   
private static String[] name={ T vEN0RV2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (Nky?*  
}; +:s]>R eDa  
'_~X(izc  
private static Sort[] impl=new Sort[]{ j70]2NgX  
new InsertSort(), 5K~kzR L$r  
new BubbleSort(), |Bv?! sjf  
new SelectionSort(), yWs_Z6b  
new ShellSort(), ~"Pu6-\VT  
new QuickSort(), e@-"B9~   
new ImprovedQuickSort(), ae)0Yu`*G7  
new MergeSort(), UHtxzp =[  
new ImprovedMergeSort(), \Lz2"JI  
new HeapSort() Q}?yj,D D  
}; 1D,$Az~.  
A1zqm_X5)P  
public static String toString(int algorithm){ *mc]Oa  
return name[algorithm-1]; &*}NN5Sv  
} [I`r[u  
; FO1b*  
public static void sort(int[] data, int algorithm) { k{fCU%  
impl[algorithm-1].sort(data); z)Y<@2V*C  
} <eObQ[mQ  
Bh9O<|E  
public static interface Sort { !Cm<K*c"&E  
public void sort(int[] data); %'}L.OvG  
} x,s Ma*vd  
b9ON[qOMN  
public static void swap(int[] data, int i, int j) { {\OIowa  
int temp = data; @$5GxIw<l  
data = data[j]; e$k ]z HlQ  
data[j] = temp; >bf29tr  
} CvCk#:@HM  
} Cmq.V@  
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