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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。 6:Hd`  
插入排序: Hg~8Td**  
>qy$W4  
package org.rut.util.algorithm.support; j'uzjs[  
]\1H=g%Ou  
import org.rut.util.algorithm.SortUtil; lNLa:j  
/** Qef5eih  
* @author treeroot M7fPaJKL  
* @since 2006-2-2 6vfut$)[{  
* @version 1.0 {1"kZL  
*/ u0Bz]Ux/Q  
public class InsertSort implements SortUtil.Sort{ `t7z LC^c  
K_Pbzj4(P  
/* (non-Javadoc) :u,Ji9 u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h1~/zM/`  
*/ &c^tJ-s  
public void sort(int[] data) { \zJb}NbnT  
int temp; %$<v:eMAs  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XI '.L ~  
} tXCgRU  
} %oOSmt  
} v t_lM  
P67*-Ki  
} ,7I    
hg7_ZjO  
冒泡排序: oe*fgk/o9  
3:aj8F2  
package org.rut.util.algorithm.support; QQ/9ZI5  
"sSY[6Kp!  
import org.rut.util.algorithm.SortUtil; .wO-2h{Q  
'kSm}} y  
/** s-4qK(ml-  
* @author treeroot Sa-" G`  
* @since 2006-2-2 ?>1wZ  
* @version 1.0 i'B$Xr  
*/ #z61 I"kU  
public class BubbleSort implements SortUtil.Sort{ 2U`!0~pod  
v'Pbx  
/* (non-Javadoc) Nh01NY;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rMoz+{1A  
*/ 58t_j54  
public void sort(int[] data) { *m8{yh  
int temp; s$ kvLy<  
for(int i=0;i for(int j=data.length-1;j>i;j--){ FMtg7+Q|>  
if(data[j] SortUtil.swap(data,j,j-1); sk5B} -  
} zWrynJ}s  
} L0R$T=~%)  
} %KPQ|^WE  
} ]*X z~Ox2  
#h#_xh'  
} bt"5.nm  
 Xb~i?T;f  
选择排序: Elt" tJ  
k*r G^imX  
package org.rut.util.algorithm.support; j|>^wB  
#bS}?fj  
import org.rut.util.algorithm.SortUtil; !y862oKD  
a`D`v5G t  
/** 7ju^B/ 7  
* @author treeroot w5vzj%6i  
* @since 2006-2-2 DH"_.j  
* @version 1.0 3fUiYI|&7  
*/ Ml,in49  
public class SelectionSort implements SortUtil.Sort { iX6*OEl/Q  
;D<;pW  
/* N>iNz[a q  
* (non-Javadoc) jFl!<ooCo  
* _=9m [  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $k+XH+1CW  
*/ qN^]`M[ BY  
public void sort(int[] data) { @ %o'  
int temp; wkY$J\J  
for (int i = 0; i < data.length; i++) { `NyO|9/4  
int lowIndex = i; hG}gKs  
for (int j = data.length - 1; j > i; j--) { w}YcAnuB{%  
if (data[j] < data[lowIndex]) { &"=O!t2  
lowIndex = j; / <+F/R'=O  
} YlXqj\a  
} `[h&Q0Du6  
SortUtil.swap(data,i,lowIndex); braI MIQ`  
} FzF#V=9lP  
} dpT?*qLM  
wjTW{Bg~G  
} [sK'jQo-[1  
(ylZ[M&B:  
Shell排序: iM$iZ;Tp  
{5 3#Xd  
package org.rut.util.algorithm.support; vcZ"4%w  
@W=: r/  
import org.rut.util.algorithm.SortUtil; Y}h&dAr  
39x 4(  
/** %6x3 G  
* @author treeroot O' Mma5  
* @since 2006-2-2 @P">4xVX{  
* @version 1.0 z"*3p8N  
*/ u63Q<P<  
public class ShellSort implements SortUtil.Sort{ As??_=>4  
Z ?ATWCa  
/* (non-Javadoc) aqgm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uM[[skc  
*/ EiS2-Uh*TT  
public void sort(int[] data) { z3M6<.K  
for(int i=data.length/2;i>2;i/=2){ aNgJm~K0P  
for(int j=0;j insertSort(data,j,i); L?(m5u~b  
} q8& ^E.K  
} E?jb?  
insertSort(data,0,1); 8\bZ?n#dn  
} N.vkM`Z  
A{wk$`vH  
/** u&'&E   
* @param data =j@8/  
* @param j K,!f7KKo  
* @param i Q) iN_|  
*/ 0L \vi  
private void insertSort(int[] data, int start, int inc) { \,G19o}`Es  
int temp; '<h@h*R  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -AXMT3p=1  
} ]_hXg*?  
} s5ILl wr  
} nIl<2H]F`  
m@yx6[E#  
} {sUc2vR  
7 .xejz  
快速排序: ,%KMi-w]q,  
( `d_DQ  
package org.rut.util.algorithm.support; ah!fQLMH  
qX]ej 2  
import org.rut.util.algorithm.SortUtil; _<jccQ  
Mvk#$:8e  
/** *jl_,0g]  
* @author treeroot !^3j9<|@'  
* @since 2006-2-2 7mYBxE/  
* @version 1.0 /?C6 oj1  
*/ ~{D:vj4>  
public class QuickSort implements SortUtil.Sort{ o2^?D`Jr  
tp b(.`G  
/* (non-Javadoc) h}%yG{'/M=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; zfBe%Uf  
*/ aT=V/Xh}d  
public void sort(int[] data) { ScC!?rTW~7  
quickSort(data,0,data.length-1); {ZgycMS  
} 4OdK@+-8U  
private void quickSort(int[] data,int i,int j){ Ot3+<{  
int pivotIndex=(i+j)/2; !e0/1 j=  
file://swap |bmc6G[  
SortUtil.swap(data,pivotIndex,j); _aOsFFB1KF  
}J:WbIr0!  
int k=partition(data,i-1,j,data[j]); 5G#K)s(QC  
SortUtil.swap(data,k,j); @TnAO8Q>XD  
if((k-i)>1) quickSort(data,i,k-1); Mp^U)S+  
if((j-k)>1) quickSort(data,k+1,j); |9 4xRC  
nmrdqSV  
} }q~xr3#  
/** MP`WU}2  
* @param data z|G 39  
* @param i $]iRfXv,l!  
* @param j XXZ$^W&  
* @return @_Ly^' "  
*/ Pl[WCh  
private int partition(int[] data, int l, int r,int pivot) { h_h6@/1l  
do{ 0"M0tA#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Uf-`g>  
SortUtil.swap(data,l,r); DYCXzFAa  
} 1H,hw  
while(l SortUtil.swap(data,l,r); 3yIC@>&y(8  
return l; ,6a }l;lv  
} {%z}CTf#  
hH@pA:`s  
} bq` 0$c%hN  
h>K%Ox R  
改进后的快速排序: LL=nMoS  
Jx= v6==7  
package org.rut.util.algorithm.support; "a >a "Ei  
6b#J!:?  
import org.rut.util.algorithm.SortUtil; JY@x.?N5$  
\JEI+A PY*  
/** O:G-I$F|  
* @author treeroot {~:F1J~=  
* @since 2006-2-2 pmi`Er  
* @version 1.0 mH09* Z  
*/ 7ip(-0  
public class ImprovedQuickSort implements SortUtil.Sort { ?28aEX_w  
\) T4NN  
private static int MAX_STACK_SIZE=4096; &:*|KxX  
private static int THRESHOLD=10; NYZI;P1DA  
/* (non-Javadoc) 8fs::}0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %+Khj@aX  
*/ }!g^}BWWp  
public void sort(int[] data) { <ba+7CK] w  
int[] stack=new int[MAX_STACK_SIZE]; REwZ41   
)*3sE1  
int top=-1; VR_bX|  
int pivot; 3:WXrOl  
int pivotIndex,l,r; qbe9 CF'@_  
[8.w2\<?  
stack[++top]=0; &\o !-EIK8  
stack[++top]=data.length-1; : S |)  
K.jm>]'z4;  
while(top>0){ c{t(),nAA  
int j=stack[top--]; (T0%H<#+  
int i=stack[top--]; K|LS VN?K  
Y+I`XeY  
pivotIndex=(i+j)/2; e#$ZOK)`  
pivot=data[pivotIndex]; tmI2BBv  
goV[C]|  
SortUtil.swap(data,pivotIndex,j); l~Sn`%PgA  
sGD b<  
file://partition UZ+FV;<  
l=i-1; Bx32pY  
r=j; JMq00_  
do{ f<0nj?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \ >(;t#>  
SortUtil.swap(data,l,r); JR j%d&^}  
} 8o;9=.<<~u  
while(l SortUtil.swap(data,l,r); X`k[ J6  
SortUtil.swap(data,l,j); [bvIT]Z  
 =j1rw  
if((l-i)>THRESHOLD){ Zj8aD-1]U^  
stack[++top]=i; sx0:g?F3j  
stack[++top]=l-1; YEx7 6  
} \WVrn>%xu  
if((j-l)>THRESHOLD){ 3 # ua  
stack[++top]=l+1; xdH*[  
stack[++top]=j; ]OOL4=b  
} glppb$oB\  
G&Sp }  
} >2l;KVm%  
file://new InsertSort().sort(data); T+[N-"N  
insertSort(data); ]='E&=nc  
} {<- BU[H  
/** -3<5,Q{G+  
* @param data =/rIXReY  
*/ Y?z@)cL  
private void insertSort(int[] data) { +cVnF&@$  
int temp; 8vcV-+x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {>c O&eiCt  
} `MtPua\_  
} O`hOVHD Q  
} rE bC_<  
pc w^W  
} Osdw\NNH~M  
?b~Vuo  
归并排序: j9za)G-J  
5Qik{cWxBq  
package org.rut.util.algorithm.support; GiN\nu<!  
ccJ@jpXI  
import org.rut.util.algorithm.SortUtil; >]k'3|vV  
yjVPaEu]aU  
/** oP".>g-.  
* @author treeroot [2!K 6  
* @since 2006-2-2 2 c <Qh=  
* @version 1.0 g(Jzu'  
*/ v 6?{g  
public class MergeSort implements SortUtil.Sort{ hb"t8_--c  
gC#PqK~  
/* (non-Javadoc) xh\{ dUPA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "S43:VH  
*/ KFd"JtPg  
public void sort(int[] data) { 1Q6WpS  
int[] temp=new int[data.length]; e1X*}OI  
mergeSort(data,temp,0,data.length-1); z1ltc{~Z  
} s45Y8!c  
Yo c N@s  
private void mergeSort(int[] data,int[] temp,int l,int r){ (@dh"=Lt\  
int mid=(l+r)/2; Qcz7IA  
if(l==r) return ; Poacd;*  
mergeSort(data,temp,l,mid); N(@'L43$V  
mergeSort(data,temp,mid+1,r); Dm6}$v'0  
for(int i=l;i<=r;i++){ yk9|H)-z  
temp=data; .Mw'P\GtM  
} u|7d_3 ::  
int i1=l; i=-zaboo  
int i2=mid+1; 4XDR?KUM  
for(int cur=l;cur<=r;cur++){ k|,pj^  
if(i1==mid+1) 2@o_7w98  
data[cur]=temp[i2++]; FG-w7a2mn  
else if(i2>r) H>[1D H#b  
data[cur]=temp[i1++]; QtQku1{  
else if(temp[i1] data[cur]=temp[i1++]; +n]U3b  
else 8| zR8L  
data[cur]=temp[i2++]; ;5A&[]@^^@  
} Zg|z\VR  
} Z^>[{|lIA  
,ORZtj  
} &2{h]V6  
U6 "U^  
改进后的归并排序: c@:r\]  
WJZW5 Xt  
package org.rut.util.algorithm.support; mk1;22o{TX  
H>e?FDs0*R  
import org.rut.util.algorithm.SortUtil; UcDJ%vI  
[K[tL|EK  
/** ~<3qsA..  
* @author treeroot 4em7PmT  
* @since 2006-2-2 vfJ}t#%UH  
* @version 1.0 8f% @  
*/ =V1k'XJ  
public class ImprovedMergeSort implements SortUtil.Sort { N7*JL2Rnq  
]YZ+/:#U7  
private static final int THRESHOLD = 10; -3X#$k8  
=eSG7QfS  
/* 7Rj!vj/  
* (non-Javadoc) ,*r"cmz  
* tq?lF$mM:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |^Z1 D TAw  
*/ L*9^-,  
public void sort(int[] data) { VY@uQ#&A  
int[] temp=new int[data.length]; /g712\?M4  
mergeSort(data,temp,0,data.length-1); rSB"0 W7  
} *J?QXsg  
6z"fBF  
private void mergeSort(int[] data, int[] temp, int l, int r) { $GUSTV  
int i, j, k; l2=.;7 IV  
int mid = (l + r) / 2; 3~BL!e,  
if (l == r) }#q9>gx  
return; -[v:1\Vv  
if ((mid - l) >= THRESHOLD) O1coay  
mergeSort(data, temp, l, mid);  "=H7p3  
else #;a 1=8H  
insertSort(data, l, mid - l + 1); UKQ ,]VC  
if ((r - mid) > THRESHOLD) Fg?Gx(g4  
mergeSort(data, temp, mid + 1, r); qI<6% ^i  
else ,v$gQU2  
insertSort(data, mid + 1, r - mid); X}_}`wIn  
(80]xLEBL  
for (i = l; i <= mid; i++) { U n2xZ[4  
temp = data; JTpKF_Za<  
} B @UaaWh  
for (j = 1; j <= r - mid; j++) { TvAA  
temp[r - j + 1] = data[j + mid]; O$Wt\Y <q  
} 4>{q("r,  
int a = temp[l]; 6J6MR<5'  
int b = temp[r]; ?)7uwJsH  
for (i = l, j = r, k = l; k <= r; k++) { RP7e)?5$s  
if (a < b) { /+P 4cHv]F  
data[k] = temp[i++]; @h X  
a = temp; vyERt^z  
} else { d37l/I  
data[k] = temp[j--]; pQ*9)C   
b = temp[j]; U#+S9jWe  
} E$34myOVf  
} iquB]z'  
} "a-Ex ]  
7s,IT8ii  
/** t'_Hp},  
* @param data Z~~{!C+G  
* @param l DL|,:2`  
* @param i 9]VUQl9gh  
*/ > z h  
private void insertSort(int[] data, int start, int len) { ]o_Z3xXUa  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;) 5d wq  
} hv}rA,Yd  
} 23qTmh  
} HW"|Hm$Y(  
} )}=`Gx5+  
cG,B;kMjo  
堆排序: 1s=M3m&H  
K/+5$SjF  
package org.rut.util.algorithm.support; K&9|0xt  
*ZKI02M  
import org.rut.util.algorithm.SortUtil; WHqp7NPl  
^T)HRT-k  
/** 7tfMD(Q]e/  
* @author treeroot ly}6zOC\  
* @since 2006-2-2 ?2%d;tW  
* @version 1.0 h5U@Ys  
*/ fr;>`u[;  
public class HeapSort implements SortUtil.Sort{ mgL~ $  
R?(0:f  
/* (non-Javadoc) (i1FMd}G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1@P/h#_Vr  
*/ k)b}"' I  
public void sort(int[] data) { c#$B;?  
MaxHeap h=new MaxHeap(); 05LVfgJ'q  
h.init(data); Cv>|>Ob#  
for(int i=0;i h.remove(); %8>s:YG  
System.arraycopy(h.queue,1,data,0,data.length); 4gb2$"!  
} &kHp}\  
Ji :2P*  
private static class MaxHeap{ X~sl5?  
=_\5h=`Yx  
void init(int[] data){ 5CueD]  
this.queue=new int[data.length+1]; yN5g]U. Q  
for(int i=0;i queue[++size]=data; Y]P'; C_eP  
fixUp(size); wP/&k`HQ#i  
} 'LpJ:Th  
} tlV>  
Q'~kWmLf  
private int size=0; "2i{ L '  
ZvpcjP  
private int[] queue; sczN0*w&C  
 Mhm3u  
public int get() { hq6fDRO/4  
return queue[1]; o=_:g >5  
} T,@.RF  
68Vn]mr#  
public void remove() { }7RR",w  
SortUtil.swap(queue,1,size--); =\B{)z7@6D  
fixDown(1); 9 #TzW9  
} D!h8NZ;El  
file://fixdown B&Q\J>l9S  
private void fixDown(int k) { !lKO|Y  
int j; +J} wYind  
while ((j = k << 1) <= size) { R5g -b2Lm  
if (j < size %26amp;%26amp; queue[j] j++; y{,HpPp#o  
if (queue[k]>queue[j]) file://不用交换 "fdgBso  
break; A07g@3n  
SortUtil.swap(queue,j,k); s:7^R-"  
k = j; Q zPq^  
} 8;ke,x  
} b4Br!PL@G  
private void fixUp(int k) { \{t#V ~  
while (k > 1) { a*$to/^r  
int j = k >> 1; mv O!Y  
if (queue[j]>queue[k]) }=z_3JfO  
break; u pg?  
SortUtil.swap(queue,j,k); {E-.W"t4  
k = j; "XT7;!  
} ]|it&4l  
} Tz4,lwuWX7  
D*6v.`]X  
} mcy\nAf5%  
L3JFQc/oh~  
} Yz=(zj  
OXe+=Lp<  
SortUtil: QG*=N {% 5  
'A;G[(SYy  
package org.rut.util.algorithm; `uM:>  
CnSfGsE>  
import org.rut.util.algorithm.support.BubbleSort; 7Ab&C&3  
import org.rut.util.algorithm.support.HeapSort; au@ LQxKQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; ,;)Y 1q}Q  
import org.rut.util.algorithm.support.ImprovedQuickSort; }l~|c{WH`  
import org.rut.util.algorithm.support.InsertSort; L^i=RGx  
import org.rut.util.algorithm.support.MergeSort; Nz_c]3_j  
import org.rut.util.algorithm.support.QuickSort; M$~3`n*^  
import org.rut.util.algorithm.support.SelectionSort; $m,gQV~4  
import org.rut.util.algorithm.support.ShellSort; cjAKc|NJ  
<`k\kZM  
/** @wy|l)%  
* @author treeroot P?p>'avP  
* @since 2006-2-2 'bJ!~ML&  
* @version 1.0 _*7h1[,{f  
*/ rl4B(NZi}  
public class SortUtil { 7zXFQ|TP  
public final static int INSERT = 1; v#0F1a?]D  
public final static int BUBBLE = 2; 8^\}\@  
public final static int SELECTION = 3; :i_818h!?[  
public final static int SHELL = 4; 4e~^G  
public final static int QUICK = 5; u.sF/T=6f  
public final static int IMPROVED_QUICK = 6; R*a5bKr  
public final static int MERGE = 7; s:3 altv  
public final static int IMPROVED_MERGE = 8; #"-?+F=rk  
public final static int HEAP = 9; 5Ds/^fA  
0D/u`-  
public static void sort(int[] data) { (|)`~z  
sort(data, IMPROVED_QUICK); 6zh<PETa03  
} lffp\v{w  
private static String[] name={ Hy ^E m  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;*1bTdB5a  
}; uPKq<hBI  
<_$]!Z6UR  
private static Sort[] impl=new Sort[]{ ?j;e/r.  
new InsertSort(), XI:8_F;Q  
new BubbleSort(), pd{W(M78g  
new SelectionSort(), K]ob>wPf  
new ShellSort(), nw swy]e8/  
new QuickSort(), +^ a9i5  
new ImprovedQuickSort(), =+5z;3  
new MergeSort(), A]ZCQ49  
new ImprovedMergeSort(), QA>(}u\+  
new HeapSort() qzS 9ls>>  
}; CF"$&+s9  
59mNb:<  
public static String toString(int algorithm){ K~ ,| ~  
return name[algorithm-1]; ZycV?ob8}  
} s3qWTdM  
nfpkWyIu{  
public static void sort(int[] data, int algorithm) { `q|&;wP.  
impl[algorithm-1].sort(data); mAMi-9  
} **_`AM~  
JLUG=x(dA  
public static interface Sort { Py7!_TX  
public void sort(int[] data); t\~lGG-p  
} ddvSi 6  
pYZ6-s  
public static void swap(int[] data, int i, int j) { QR4rQu  
int temp = data; F}3<q   
data = data[j]; aEU[k>&  
data[j] = temp; ]@X5'r"  
} #:C;VAAp  
} ASmMj;>UM  
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