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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。 og+Vrd  
插入排序: h \`(  
O\yYCi(  
package org.rut.util.algorithm.support; 6z~ [Ay  
3 Z SU^v  
import org.rut.util.algorithm.SortUtil; }*-fh$QJ  
/** p*cyW l  
* @author treeroot Mx93D   
* @since 2006-2-2 dXY}B=C  
* @version 1.0 P*?2+.  
*/ r SoT]6/   
public class InsertSort implements SortUtil.Sort{ x?0(K=h,  
p.4Sgeh#  
/* (non-Javadoc) ^HP$r*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MGw XZ7?E  
*/ -Tuk.>i)  
public void sort(int[] data) { Qqb%^}Xx'u  
int temp; *Y53b Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3~WI3ZIR  
} K|~ !oQ  
} q(s0dkrj  
} ;Cx`RF w  
'5T:*Yh  
} 'X&"(M  
&V &beq4)p  
冒泡排序: 7{S;~VH3  
'S v V10$5  
package org.rut.util.algorithm.support; ~k 6V?z}  
Ug gg!zA  
import org.rut.util.algorithm.SortUtil; id`9,IJx  
V~o'L#a  
/** #gf0*:p  
* @author treeroot oM#+Z qP  
* @since 2006-2-2 u,YmCEd_V  
* @version 1.0 ~$ ?85   
*/ <Z~Nz>'r  
public class BubbleSort implements SortUtil.Sort{ #>5T,[{?j  
4_CXs.v1  
/* (non-Javadoc) UY.o,I> s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |P9)*~\5  
*/ @frV:%  
public void sort(int[] data) { I7f :TN  
int temp; 4.kn , s  
for(int i=0;i for(int j=data.length-1;j>i;j--){ M M @&QaK  
if(data[j] SortUtil.swap(data,j,j-1); T0@<u  
} yG#x*\9  
} 7Fa1utV I  
} 5wvh @Sc\  
} 9Z 6  
(8W ?ym  
} pF~aR]Q  
@2$Uk!  
选择排序: efbJ2C  
]nxSVKE4p  
package org.rut.util.algorithm.support; '2<N_)43$  
}b<w\9AF  
import org.rut.util.algorithm.SortUtil; TPN1Rnt0`  
PP_ar{|7  
/** $9Xn.,W  
* @author treeroot 1':};}dCJ  
* @since 2006-2-2 90<a'<\|  
* @version 1.0 mG *Yv  
*/ /(s N@kt  
public class SelectionSort implements SortUtil.Sort { w);Bet  
cft@s Y  
/* f.vJJa  
* (non-Javadoc) ~ /K'n  
* C6tfFS3bq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7.yCs[Z  
*/ `RE K,^U  
public void sort(int[] data) { q(#,X~0  
int temp; -3y $j+  
for (int i = 0; i < data.length; i++) { #V[Os!ns  
int lowIndex = i; $O;a~/T  
for (int j = data.length - 1; j > i; j--) { gHWsKE  %  
if (data[j] < data[lowIndex]) { 3?&P^{  
lowIndex = j; S*ie$}ZX  
} =}+xD|T  
} E|VTbE YG  
SortUtil.swap(data,i,lowIndex); 8*]dA ft  
} IJZx$8&A  
} ZtI@$ An  
[/J(E\9  
} 7zNfq.Ni~  
r8_MIGM'  
Shell排序: l>7?B2^<E  
(gutDUO;  
package org.rut.util.algorithm.support; (. $e@k=  
r,GgMk  
import org.rut.util.algorithm.SortUtil; [&p/7  
HIlTt  
/** 1HRcEzA  
* @author treeroot C8 $KVZ  
* @since 2006-2-2 }%,LV]rGEZ  
* @version 1.0 P[,  
*/ T<0V ^B7  
public class ShellSort implements SortUtil.Sort{ 4"+v:t)z6{  
D<^K7tJui  
/* (non-Javadoc) EuD$^#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NQd0$q  
*/ \Dx)P[Ur  
public void sort(int[] data) { v@:m8Y(t  
for(int i=data.length/2;i>2;i/=2){ 5lE9UoG[Q  
for(int j=0;j insertSort(data,j,i); OK:YnSk"  
} t1o_x}z4.  
} 3`njQvI\  
insertSort(data,0,1); VQ2B|v  
} o~'UWU'#  
~2XiKY;W?  
/** *Y ?&N2@c  
* @param data ZP4y35&%y  
* @param j 1(a+|  
* @param i l27J  
*/ %/K;!'7  
private void insertSort(int[] data, int start, int inc) { Mbxrj~ue  
int temp; TzV~I\a|  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); iB{l:  
} Q2t>E(S  
} "Qe2U(Un  
} #\O?|bN'q  
3=^B &AB  
} v *@R U  
6"o@d8>v  
快速排序: )!l1   
i uoZk5O  
package org.rut.util.algorithm.support; -$f$z(h  
G>+iisb%  
import org.rut.util.algorithm.SortUtil; hh^_Z| 5  
l`EKL2n  
/** {MmK:C  
* @author treeroot cq 1)b\|  
* @since 2006-2-2 xcXnd"YYE  
* @version 1.0 =K6{AmG$  
*/ ,@@FAL  
public class QuickSort implements SortUtil.Sort{ D^H4]7wG@  
SrvC34<7  
/* (non-Javadoc) ia%U;M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n'<F'1SWv  
*/ b5UIX Kim  
public void sort(int[] data) { g;</|Z  
quickSort(data,0,data.length-1); {&)E$ M  
} #D8u#8Dz  
private void quickSort(int[] data,int i,int j){ RV6|sN[x>  
int pivotIndex=(i+j)/2; @?[}\9dW  
file://swap |\h<!xR  
SortUtil.swap(data,pivotIndex,j); D~f[Rg  
-Rr Qv(  
int k=partition(data,i-1,j,data[j]); M_#^zo "x  
SortUtil.swap(data,k,j); FmtV[C #  
if((k-i)>1) quickSort(data,i,k-1); 5[rA>g~  
if((j-k)>1) quickSort(data,k+1,j); qa/VSk!{  
S>EO6z#   
} sKL"JA T  
/** ?~rz'Pu~  
* @param data Ccy0!re  
* @param i pm'i4!mY<P  
* @param j U$6(@&P!  
* @return >Te h ?P  
*/ [kPF Jf  
private int partition(int[] data, int l, int r,int pivot) { kBJx`tjtp  
do{ )E=~ _`XO  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); oJor ]QYK  
SortUtil.swap(data,l,r); JA6#qlylL  
} t;)`+K#1:  
while(l SortUtil.swap(data,l,r); ,gn**E  
return l; JcI~8;Z@Z~  
} Zl=IZ?F   
'FmnlC1  
} xw~&OF&  
e4Jx%v?_P  
改进后的快速排序: G:!'hadw  
:LX (9f   
package org.rut.util.algorithm.support; [|oOP$u  
JCZ5q9b  
import org.rut.util.algorithm.SortUtil; kk7M$)>d  
E'F87P^>  
/** 4j-%I7  
* @author treeroot s7na!A[  
* @since 2006-2-2 MDOP2y`2i  
* @version 1.0 +>o} R?xj  
*/ JI[9c,N  
public class ImprovedQuickSort implements SortUtil.Sort { ]MV=@T^8#  
A$XmO}+  
private static int MAX_STACK_SIZE=4096; 0z=^_Fb  
private static int THRESHOLD=10; '645Fr[lg  
/* (non-Javadoc) LP5@ID2G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3^p;'7x  
*/ ]ZM-c~nL  
public void sort(int[] data) { ./E<v  
int[] stack=new int[MAX_STACK_SIZE]; u75(\<{  
>iFi~)i_4y  
int top=-1; `ouCQ]tKz  
int pivot; >`D$Jz,  
int pivotIndex,l,r; 5TVA1  
Lsz)\yIPj  
stack[++top]=0; J nf@u  
stack[++top]=data.length-1; 8z'_dfP=5  
dpI! {'"M  
while(top>0){  e6hfgVN  
int j=stack[top--]; o_&*?k*  
int i=stack[top--]; XXZ<r  
j+Q E~L  
pivotIndex=(i+j)/2; "2 J2za  
pivot=data[pivotIndex]; zT"W(3  
*S{fyYyM  
SortUtil.swap(data,pivotIndex,j); xBK is\b  
Qwu~ {tf+'  
file://partition 137:T:  
l=i-1; 7q|51rZz  
r=j; '"o&BmF  
do{ g0-J8&?X  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !Di*y$`}b  
SortUtil.swap(data,l,r); s!F` 0=J^  
} %L eZd}v  
while(l SortUtil.swap(data,l,r); ])uhm)U@  
SortUtil.swap(data,l,j); %t J@)  
!O*uQB  
if((l-i)>THRESHOLD){ ?9m@ S#@  
stack[++top]=i; Vrx3%_NkQ  
stack[++top]=l-1; $WHmG!)*  
} )6 [d'2  
if((j-l)>THRESHOLD){ #a=~a=c(^  
stack[++top]=l+1; v* /}s :a  
stack[++top]=j; `%A>{A"  
} {/PiX1mn  
^h\Y.  
} 6=i@t tAK  
file://new InsertSort().sort(data); kxVR#:  
insertSort(data); +LeM[XX  
} x4nmDEpa  
/** R`!'c(V  
* @param data ^Y- S"Ks  
*/ ,T\)%q  
private void insertSort(int[] data) { 5t-dvYgU  
int temp; -x0VvkHu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sDzlNMr?P+  
} BP`'1Ns  
} {|ChwM\x  
} OVgx2_F  
4J6,_8`U  
} }E]&,[4&M  
j9]H~:g$d  
归并排序: O[/l';i  
|>L|7>J{<d  
package org.rut.util.algorithm.support; QvjOOc@k~n  
y( uE  
import org.rut.util.algorithm.SortUtil; EoD[,:*  
Ec;{N  
/** ZVX!=3VT  
* @author treeroot &$+nuUA  
* @since 2006-2-2 dE0 p>4F  
* @version 1.0 WyD L ah^/  
*/ n%1I}?$fO  
public class MergeSort implements SortUtil.Sort{ i%eq!q  
rLzN #Zoi  
/* (non-Javadoc) xD3Y-d9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '2BE"e  
*/ mhZ60RW  
public void sort(int[] data) { {Mx3G*hr  
int[] temp=new int[data.length]; "<5su5]  
mergeSort(data,temp,0,data.length-1); 60r4%> d  
} =& .KKr  
zOzobd   
private void mergeSort(int[] data,int[] temp,int l,int r){ ^ H )nQ  
int mid=(l+r)/2; re;^,  
if(l==r) return ; HHU0Nku@ho  
mergeSort(data,temp,l,mid); Q1?09  
mergeSort(data,temp,mid+1,r); x]%'^7#v)  
for(int i=l;i<=r;i++){ KaGG4?=V  
temp=data; Zn]njf1x  
} fF*{\  
int i1=l; 6I`Lszs  
int i2=mid+1; leSR2os  
for(int cur=l;cur<=r;cur++){ {D9m>B3"{  
if(i1==mid+1) ~KF>Jow?Y  
data[cur]=temp[i2++]; 7xr@$-U  
else if(i2>r) w;Jby  
data[cur]=temp[i1++]; N akSIGm  
else if(temp[i1] data[cur]=temp[i1++]; fXJbC+  
else 8kwe._&)  
data[cur]=temp[i2++]; Bw;LGEHi|  
} /:],bNb  
} l[D5JnWxt  
)lsR8Hi8  
} 2Yt+[T*  
#ovmX  
改进后的归并排序: ExDv7St1(k  
!uwZ%Ux z  
package org.rut.util.algorithm.support; jR[3{ Reo  
eVy>  
import org.rut.util.algorithm.SortUtil; +>uiI4g  
-lNq.pp3-$  
/** tB i16=  
* @author treeroot R&`; C<6}D  
* @since 2006-2-2 ~7}aW#  
* @version 1.0 wxx3']:  
*/ _'"whZ)2  
public class ImprovedMergeSort implements SortUtil.Sort { y$7vJl.uS/  
8:)W!tr  
private static final int THRESHOLD = 10; ,fa'  
8UahoNrSt  
/* r%^l~PN  
* (non-Javadoc) Gec?  
* c'8pTP%[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c4'k-\JvT  
*/ 9h$08l  
public void sort(int[] data) { jLZ^EM-  
int[] temp=new int[data.length]; c{X:0man  
mergeSort(data,temp,0,data.length-1); --}5%6  
} " A}S92  
%Ct^{k~1  
private void mergeSort(int[] data, int[] temp, int l, int r) { nGqD{!i<  
int i, j, k; O ^+H:Y|  
int mid = (l + r) / 2; yD-L:)@"  
if (l == r) 7ZsBYP8%  
return; k,mgiGrQ  
if ((mid - l) >= THRESHOLD) 7i$)iNW  
mergeSort(data, temp, l, mid); sOY+ X  
else v3ky;~ke  
insertSort(data, l, mid - l + 1); OdrnPo{  
if ((r - mid) > THRESHOLD) ?{Rv/np=F  
mergeSort(data, temp, mid + 1, r); N#Y|MfLc  
else `3CdW  
insertSort(data, mid + 1, r - mid); [7btoo|P]  
OrJuE[R.  
for (i = l; i <= mid; i++) { >Yf)]e-  
temp = data; G'M;]R9EP  
} K#e&yY  
for (j = 1; j <= r - mid; j++) { ~7$4w# of0  
temp[r - j + 1] = data[j + mid]; _,?<r&>v6  
} KT>eE  
int a = temp[l]; oN\IQ7oI  
int b = temp[r]; BsJ d*-:X  
for (i = l, j = r, k = l; k <= r; k++) { ,3As Ng  
if (a < b) { ]#fmih^  
data[k] = temp[i++]; m/T3Um  
a = temp; P~H?[ ;  
} else { lI<Q=gd  
data[k] = temp[j--]; oieJ7\h]m  
b = temp[j]; 3;hztCZj  
} hN5?u:  
} m 3 Y@p$i5  
} ~mR@L`"l  
t6+c"=P#  
/** ]"2;x  
* @param data C2[* $ 1U  
* @param l XDtMFig  
* @param i 1[g -f ,  
*/ @  gv^  
private void insertSort(int[] data, int start, int len) { WE*L=_zDS  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /qd5{%:  
} h| T_ k  
} +'ZJ]  
} >OLKaghV.5  
} ,DZoE~  
0eP ]  
堆排序: 3hi0  
#aeKK7[  
package org.rut.util.algorithm.support; 3!H&bOF  
J dK' ~-L  
import org.rut.util.algorithm.SortUtil; pXy'Ss@y  
U{JD\G 8m  
/** 5OR2\h!XZt  
* @author treeroot <?&Y_  
* @since 2006-2-2 ,Hzz:ce  
* @version 1.0 2 lc  
*/ w1&\heSQ  
public class HeapSort implements SortUtil.Sort{ WCdl 25L#  
o _G,Ph!7  
/* (non-Javadoc) aWCZ1F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M&v;#CV  
*/ j TyR+#Wn  
public void sort(int[] data) { ?^Q8#Y^M  
MaxHeap h=new MaxHeap(); 2d#3LnO  
h.init(data); Q:5^K  
for(int i=0;i h.remove(); "K9/^S_  
System.arraycopy(h.queue,1,data,0,data.length); vh/&KTe?:  
} N*w6D:  
%6%~`((4  
private static class MaxHeap{ ' a>YcOw  
)-s9CWJv  
void init(int[] data){ z]%c6ty  
this.queue=new int[data.length+1]; I,lX;~xb  
for(int i=0;i queue[++size]=data; u^4$<fd  
fixUp(size); (2J\o  
} JqmxS*_P  
} n6xJ  
HVHd@#pDZ  
private int size=0; V'q?+p] a  
RDSkFK( D  
private int[] queue; {O=PVW2S  
#aua6V!"  
public int get() { z8@[]6cW  
return queue[1]; K7-z.WTUR  
} B4Fuvi  
J85S'cwZZ  
public void remove() { 0Xw$l3@N^  
SortUtil.swap(queue,1,size--); T2ZB(B D  
fixDown(1); -\9K'8 C  
} EEn8]qJC  
file://fixdown @"G+kLv0  
private void fixDown(int k) { dHsI<:T#  
int j; nf0]<x2  
while ((j = k << 1) <= size) { \V_ Tc`  
if (j < size %26amp;%26amp; queue[j] j++; hjgB[ &U>  
if (queue[k]>queue[j]) file://不用交换 r6Qsh CA"  
break; Ht"?ajW{  
SortUtil.swap(queue,j,k); \:m1{+l  
k = j; KPrH1 [VU  
} _qO'(DKylC  
} `6:B0-r  
private void fixUp(int k) { qI%X/'  
while (k > 1) { Z_h-5VU-  
int j = k >> 1; j2RdBoCt  
if (queue[j]>queue[k]) 0sA+5*mdM  
break; 0g`$Dap  
SortUtil.swap(queue,j,k); p>l:^ -N;f  
k = j; I'E7mb<2  
} {ew; /;  
} j>`-BN_  
[0n[\& 0  
} jcbq#  
,(A $WT@e  
} YvG=P<_xw  
B2,c_[UZ.  
SortUtil: q|g>;_  
9vauCIfVC  
package org.rut.util.algorithm; 6E#znRi6IE  
^~;"$=Wf  
import org.rut.util.algorithm.support.BubbleSort; 7|PB6h3  
import org.rut.util.algorithm.support.HeapSort; Ii&\LJ  
import org.rut.util.algorithm.support.ImprovedMergeSort; RG.wu6Av  
import org.rut.util.algorithm.support.ImprovedQuickSort; v{X<6^g  
import org.rut.util.algorithm.support.InsertSort; .%EYof  
import org.rut.util.algorithm.support.MergeSort; , .E>  
import org.rut.util.algorithm.support.QuickSort; +'$5Jtz  
import org.rut.util.algorithm.support.SelectionSort; RKPX*(i~  
import org.rut.util.algorithm.support.ShellSort; pft-.1py  
t$e'[;w  
/** WDi2m"  
* @author treeroot +ag_w}  
* @since 2006-2-2 !(HPx@_  
* @version 1.0 `=$p!H8  
*/ i IM\_<?  
public class SortUtil { I.[Lv7U-  
public final static int INSERT = 1; }/lyrjV  
public final static int BUBBLE = 2; P-/"sD  
public final static int SELECTION = 3; bXi!_'z$  
public final static int SHELL = 4; }P'c8$  
public final static int QUICK = 5; v!W{j&N  
public final static int IMPROVED_QUICK = 6; PX*}.L *x  
public final static int MERGE = 7; 1\a.o[g3e  
public final static int IMPROVED_MERGE = 8; W\2 ']7}e  
public final static int HEAP = 9; 7$*X   
:,ucJ|  
public static void sort(int[] data) { #g/m^8n?s  
sort(data, IMPROVED_QUICK); \10KIAQ  
} Z(XohWe2  
private static String[] name={ 3 "iBcsLn  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "AP$)xM-:  
}; )Dp0swJ  
B@U'7`v  
private static Sort[] impl=new Sort[]{ ed2r<H$  
new InsertSort(), iB|htH'T  
new BubbleSort(), NBL%5!'  
new SelectionSort(), H:)_;k  
new ShellSort(), @^R l{p  
new QuickSort(), UM/!dt}DnF  
new ImprovedQuickSort(), {;N2 &S o  
new MergeSort(), 6e8 gFQ"w2  
new ImprovedMergeSort(), .DI?-=p|_#  
new HeapSort() osl\j]U8  
}; 2qot(Zs1i  
,+ 5:}hR+  
public static String toString(int algorithm){ d'"|Qg_'  
return name[algorithm-1];  wX5q=I  
} d N$,AOT  
!S%0#d2  
public static void sort(int[] data, int algorithm) { W4,'?o  
impl[algorithm-1].sort(data); ('{aOiSH  
} _, E/HAX  
Cs(sar:7  
public static interface Sort { >(-A"jf  
public void sort(int[] data); *4e?y  
} \1SC:gN*#  
]}kw'&  
public static void swap(int[] data, int i, int j) { ap8q`a{j^  
int temp = data; 4l7 Ny\J  
data = data[j]; zn>+ \  
data[j] = temp; d@p#{ -  
} ZS%W/.?  
} ;{aGEOP'U  
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