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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。 &u("|O)w$  
插入排序: uO"y`$C$_  
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package org.rut.util.algorithm.support; PaNeu1cO  
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import org.rut.util.algorithm.SortUtil; ~C0 Pu.{o  
/** L -YNz0A  
* @author treeroot  Ll?g.z"  
* @since 2006-2-2 vABXXB  
* @version 1.0 =Aj"j-r&{  
*/ %oR>Uo  
public class InsertSort implements SortUtil.Sort{ M= atls  
u"\=^F  
/* (non-Javadoc) Xty# vI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |J\,F.{'  
*/ /;7ID41  
public void sort(int[] data) { ]?M)NRk%S  
int temp; N70zjy4?fL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n?}5!  
} jK e.gA  
} _%;M9Sg3  
} u|T%Xy=LU  
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} *{Yh6 {  
g [AA,@p+  
冒泡排序: !8o\.uyi  
/e .D /;]  
package org.rut.util.algorithm.support; 4 ]sCr+   
=E!x~S;N  
import org.rut.util.algorithm.SortUtil; r 3|4gG  
I=o'+>az  
/** s+'XQs^{aj  
* @author treeroot !:dL~n  
* @since 2006-2-2 b#A(*a_gN  
* @version 1.0 Qne0kB5m  
*/ IyOpju)?  
public class BubbleSort implements SortUtil.Sort{ IKo;9|2U  
LfHzT<)|  
/* (non-Javadoc) J$rJd9t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W~<m[#:6C  
*/ R2CQXhiJ  
public void sort(int[] data) { \@8*TS  
int temp; ?d~]Wd!z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ -w\M-wc/$  
if(data[j] SortUtil.swap(data,j,j-1); ljuNs@q  
} 1TIlINlJ  
} $HxS:3D%D  
} JdO)YlM-  
} #cO+<1  
 `Klrr  
} ODek%0=  
&>g~-s  
选择排序: N2[jO+6  
F;-90w  
package org.rut.util.algorithm.support; p&\K9hfi  
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import org.rut.util.algorithm.SortUtil; K0oFPDJN  
qF'~F`6  
/** 4~*Y];!Q  
* @author treeroot  cLAe sj  
* @since 2006-2-2 6{8/P'@/Zz  
* @version 1.0 >J@egIKzP  
*/ ]x@~-I )  
public class SelectionSort implements SortUtil.Sort { F3Ap1-%z  
OT;cfkf7  
/* -zTEL (r  
* (non-Javadoc) BJgDo  
* E23w *']  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NHAH#7]M&1  
*/ bNXAU\M^  
public void sort(int[] data) { iE=P'"I  
int temp; ewym 1}o  
for (int i = 0; i < data.length; i++) { eG4>d^`c  
int lowIndex = i; rFfy#e  
for (int j = data.length - 1; j > i; j--) { D'n L  
if (data[j] < data[lowIndex]) { ?&xlT+JM  
lowIndex = j; !)nD xM`p  
} I-bF{  
} M/} aq  
SortUtil.swap(data,i,lowIndex); z&>|*C.Y  
} UGCox-W"  
} p1~*;;F  
:/i~y$t  
} r@yD8D \  
ami09JHy  
Shell排序: Dkw*Je#6PX  
Z\'wm'  
package org.rut.util.algorithm.support; 1 }nm2h1 I  
2uL9.q  
import org.rut.util.algorithm.SortUtil; .it2NS  
n/AW?'  
/** BGzO!s*@j  
* @author treeroot O|7yP30?M  
* @since 2006-2-2 @hsbq  
* @version 1.0 Ye@t_,)x  
*/ n,sY\=vB  
public class ShellSort implements SortUtil.Sort{ rVcBl4&1*g  
OX^3Q:Z=  
/* (non-Javadoc) s/h7G}Mu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ul=7>";=|  
*/ ;s}3e#$L  
public void sort(int[] data) { 7k~Lttuk  
for(int i=data.length/2;i>2;i/=2){ ]F+K|X9-  
for(int j=0;j insertSort(data,j,i); sf)W~Lx 5a  
} :".w{0l@  
} Ihqs%;V  
insertSort(data,0,1); c D7FfJ  
} fv2=B )8$  
4.'JLArw  
/** M(2`2-/xh  
* @param data mW +tV1XjG  
* @param j .8(%4ejJ(  
* @param i ;UpJ=?W  
*/ :Eo8v$W\RB  
private void insertSort(int[] data, int start, int inc) { />F.Nsujy  
int temp; Hk9U&j$  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hfv%,,e  
} /WYh[XKe  
} dhtb?n{  
} OpQ8\[X+  
KuXkI;63J>  
} $H;+}VQ  
anC+r(jjg9  
快速排序: L {qJ-ln:  
!M^\f N1  
package org.rut.util.algorithm.support; !DcX8~~@  
%E.S[cf%8&  
import org.rut.util.algorithm.SortUtil; gt@SuX!@{^  
Q1T@oxV  
/** jI0]LD1k  
* @author treeroot Ag6uR(uI  
* @since 2006-2-2 uLK(F B  
* @version 1.0 |7c `(.  
*/ no|Gq>Xp  
public class QuickSort implements SortUtil.Sort{ j 3P$@<  
eM }W6vIn  
/* (non-Javadoc) 8[R1A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m8AAp1=  
*/ ve-8*Xa  
public void sort(int[] data) { 3I*uV!notJ  
quickSort(data,0,data.length-1); h'!V8'}O?  
} t 7^D-l  
private void quickSort(int[] data,int i,int j){ KTv4< c]  
int pivotIndex=(i+j)/2; s#P:6]Ar  
file://swap sUc iFAb  
SortUtil.swap(data,pivotIndex,j); 'hIU_  
tT-=hDw  
int k=partition(data,i-1,j,data[j]); L[]BzsIv  
SortUtil.swap(data,k,j); -_|]N/v\  
if((k-i)>1) quickSort(data,i,k-1); zo44^=~%  
if((j-k)>1) quickSort(data,k+1,j); hVf^  
ERC<Dd0  
} =fWdk\Wv  
/** vi|Zit  
* @param data |_nC6 ;  
* @param i +nQ!4  
* @param j <T4(H[9B  
* @return a.,i.2  
*/ G=cNzr9  
private int partition(int[] data, int l, int r,int pivot) { OoM_q/oI  
do{ <\ETPL,<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1Z 6SI>p  
SortUtil.swap(data,l,r); !g2a|g   
} = UUd8,C/  
while(l SortUtil.swap(data,l,r); 4By]vd<;=  
return l; @woC8X  
} h>W@U9  
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} |D<+X^0'  
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改进后的快速排序: m^A]+G#/  
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package org.rut.util.algorithm.support; n$W"=Z;`  
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import org.rut.util.algorithm.SortUtil;  2d~LNy  
F.0d4:A+  
/** VVLIeJ(*XT  
* @author treeroot Z"D W 2k  
* @since 2006-2-2 N7pt:G2~%  
* @version 1.0 ?K<Z kYw?  
*/ "mt p0  
public class ImprovedQuickSort implements SortUtil.Sort { fYn{QS?  
Q S;F+cmTh  
private static int MAX_STACK_SIZE=4096; :H\&2/j  
private static int THRESHOLD=10; :~33U)?{T  
/* (non-Javadoc)  f`J|>Vk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g}r^Xzd;  
*/ Snx<]|  
public void sort(int[] data) {  #>bT<  
int[] stack=new int[MAX_STACK_SIZE]; X HQh4W3  
LzE/g)>  
int top=-1; $iHoOYx]<  
int pivot; ZqP7@fO_%  
int pivotIndex,l,r; #TATqzA  
+c r  
stack[++top]=0; 1|/'"9v  
stack[++top]=data.length-1; Rf:<-C0T  
J#(,0h  
while(top>0){ _.=`>%,  
int j=stack[top--]; [TEcg^  
int i=stack[top--]; Z(UD9wY5m  
4|F#gK5E  
pivotIndex=(i+j)/2; cAibB&`~  
pivot=data[pivotIndex]; ^jOCenE 3  
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SortUtil.swap(data,pivotIndex,j); &-4 ?!  
~},~c:fF?  
file://partition :d({dF_k;p  
l=i-1; Q"'V9m7 i  
r=j; df ?eL2v  
do{ OHhs y|W  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); I+~bCcgPi  
SortUtil.swap(data,l,r); 9 `INC~h  
} z5pc3:  
while(l SortUtil.swap(data,l,r); ~<eVl l=  
SortUtil.swap(data,l,j); oAnigu;  
K7Gm-=%  
if((l-i)>THRESHOLD){ }9=2g`2Q  
stack[++top]=i; F"=Hp4-C  
stack[++top]=l-1; Yw[{beo  
} HL8(lPgS  
if((j-l)>THRESHOLD){ 5H*>  
stack[++top]=l+1; h ~fWE  
stack[++top]=j; r w\D>} \  
} 5& *zY)UL  
4Cd#sQ  
} ~v\hIm3=m  
file://new InsertSort().sort(data); RM#fX^)=  
insertSort(data); oXbI5XY)wb  
} 3G.r-  
/** avy=0Jmj  
* @param data #B}Qt5w  
*/ Jh^8xI,`C  
private void insertSort(int[] data) { 0T0/fg(o  
int temp; Wvb Eh|y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e{JVXc[D  
} 6WO7+M;z  
} ~$*`cO  
} 6e/7'TYwT  
KK$ a;/  
} [ t$AavU.  
4(8<w cL  
归并排序: FW5}oD( H  
/yp/9r@T0  
package org.rut.util.algorithm.support; ssT@<Tk^4  
F"v:}Vy|   
import org.rut.util.algorithm.SortUtil; 9M]^l,  
|=u96G~N  
/** 6+)x7g1PL  
* @author treeroot u>m'FECXj  
* @since 2006-2-2 Otxa<M+"  
* @version 1.0 Ysl9f1>%  
*/ tO`?{?W7  
public class MergeSort implements SortUtil.Sort{ i7(~>6@|  
sxk*$jO[]  
/* (non-Javadoc) uR^.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;le0QA Pf  
*/ c(E,&{+E  
public void sort(int[] data) { vS#{-X  
int[] temp=new int[data.length]; @ge LW!  
mergeSort(data,temp,0,data.length-1); ]/[0O+B?  
} zu C5@jy.x  
2md.S$V$,  
private void mergeSort(int[] data,int[] temp,int l,int r){ #EFMgQO  
int mid=(l+r)/2; fzyzuS$  
if(l==r) return ; ez+yP,.#  
mergeSort(data,temp,l,mid); NFV_+{X\  
mergeSort(data,temp,mid+1,r); ?lyltAxs'  
for(int i=l;i<=r;i++){ F0&O/-w&u  
temp=data; N2% :h;tf  
} ?y46o2b*)  
int i1=l; ZBC@xM&-  
int i2=mid+1; /L$NE$D} "  
for(int cur=l;cur<=r;cur++){ r*]uR /Z$  
if(i1==mid+1) 8 #Fh>  
data[cur]=temp[i2++]; Wxc^_iqA1  
else if(i2>r) h&P {p _Y  
data[cur]=temp[i1++];  Zsgi{  
else if(temp[i1] data[cur]=temp[i1++]; #?Wo <]i  
else fRFYJFc n  
data[cur]=temp[i2++]; "5h_8k~sQ  
} x*J|i4  
} Y6a$gXRT  
lU& Q^Zj`  
} I^@.Aw t  
mQL8QW[c  
改进后的归并排序: V>r j$Nc]  
5)8 .  
package org.rut.util.algorithm.support; 0NrTJ R`  
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import org.rut.util.algorithm.SortUtil; 7g8B'ex J  
aTX]+tBoe  
/** Bqp&2zg)@  
* @author treeroot w0X$rl1  
* @since 2006-2-2 boIVU`F-!  
* @version 1.0 d _uF Y:  
*/ C6CGj8G  
public class ImprovedMergeSort implements SortUtil.Sort { w~n kNqm  
OSj%1KL  
private static final int THRESHOLD = 10; `[&v  
(<n>EF#  
/* O[L\T  
* (non-Javadoc) #]igB9Cf)w  
* rCkYfTYI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }.OxJ=M  
*/ h>.9RX &  
public void sort(int[] data) { pb6 Q?QG,  
int[] temp=new int[data.length]; Z+Xc1W^  
mergeSort(data,temp,0,data.length-1); M",];h(I6(  
} 1-/4Y5?}  
sb 8dc  
private void mergeSort(int[] data, int[] temp, int l, int r) { -h=c=P  
int i, j, k; 6Z$b?A3zM  
int mid = (l + r) / 2; V.U|OQouT  
if (l == r) y6bjJ}  
return; Ty.drM  
if ((mid - l) >= THRESHOLD) }\U0[x#q  
mergeSort(data, temp, l, mid); 5qeT4| Ol  
else ;*_I,|A:Xr  
insertSort(data, l, mid - l + 1); 9wzg{4/-$  
if ((r - mid) > THRESHOLD) wqf&i^_  
mergeSort(data, temp, mid + 1, r); tG_-;03<`4  
else WVinP(#nfM  
insertSort(data, mid + 1, r - mid); B JU*`Tx  
9Y\F53p&j  
for (i = l; i <= mid; i++) { aam1tm#Q  
temp = data; -}N Ab^d  
} [O [FCn  
for (j = 1; j <= r - mid; j++) { '8L(f w{k  
temp[r - j + 1] = data[j + mid]; :C> J-zY  
} *TJ<  
int a = temp[l]; q;IhLBl'  
int b = temp[r]; |HNQ|r_5S  
for (i = l, j = r, k = l; k <= r; k++) { MwN1]d|6  
if (a < b) { HK^a:BI  
data[k] = temp[i++]; <nf=SRZ  
a = temp; ?!R %o  
} else { {7/A  
data[k] = temp[j--]; 1`nc8qC  
b = temp[j]; xcsFODx~  
} >c&4_?d&,A  
} H7y&N5.V  
} /E; ;j9  
IruyE(;HS  
/** G3oxa/mO  
* @param data #*[,woNk  
* @param l 2lX[hFa5  
* @param i dE+CIjW5  
*/ 9UB??049z  
private void insertSort(int[] data, int start, int len) { 2&suo!ig  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {_": / A  
} <XU8a:w'T  
} h5<T.vV  
} h 3eGq:!9  
} Xqc'R5C w  
X S6]C{  
堆排序: f2BS[$oV4  
WNCM|VUl  
package org.rut.util.algorithm.support; ;GiI'M  
nLzX Z6JlU  
import org.rut.util.algorithm.SortUtil; _-g-'Hr+N  
*Pa2bY3:  
/** #rqyy0k0'h  
* @author treeroot {yGZc3e1j  
* @since 2006-2-2 Kc%tnVyGh:  
* @version 1.0 {vf+sf ^^q  
*/ G~Sy&XJuq  
public class HeapSort implements SortUtil.Sort{  aOaF&6'j  
N02zPC 8  
/* (non-Javadoc) %ZJ),9+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ';i"?D?NAk  
*/ Y8x(#qp,  
public void sort(int[] data) { hWl""66+5  
MaxHeap h=new MaxHeap(); K7)j  
h.init(data); ,Zf :R  
for(int i=0;i h.remove(); Y*]l|)a6_]  
System.arraycopy(h.queue,1,data,0,data.length); =U)n`#6_j2  
} IwZZewb-a  
qz-#LZFTR  
private static class MaxHeap{ &':UlzG  
/zChdjz  
void init(int[] data){ t;Fbt("]:  
this.queue=new int[data.length+1]; COxZ Q  
for(int i=0;i queue[++size]=data; @n5;|`)\  
fixUp(size); $8<j5%/ $M  
} GapX$Jb,p  
} zav*  
TmRrub  
private int size=0; HV#?6,U}  
Ek gZxT_&  
private int[] queue; Pu/-Qpqh  
(cPeee%Q  
public int get() { Hsd|ka$x>  
return queue[1]; *l-Dh:  
} U*`  
* K0j5dx  
public void remove() { *DPTkMQN  
SortUtil.swap(queue,1,size--); EF*oPn0|  
fixDown(1); R#[QoyJ  
} ?15POY ?Z  
file://fixdown "jkw8UVz  
private void fixDown(int k) { QZ:]8MHl]  
int j; < -@,  
while ((j = k << 1) <= size) { a#OhWqu$  
if (j < size %26amp;%26amp; queue[j] j++; Vq)|gF[6i  
if (queue[k]>queue[j]) file://不用交换 #`YxoY`  
break; z=- 8iks|  
SortUtil.swap(queue,j,k); [[.&,6  
k = j; -KJ}.q>upq  
} ` $QzTv   
} ~/]\iOL  
private void fixUp(int k) { GlV-}5W  
while (k > 1) { ;%b <uV  
int j = k >> 1; \'}/&PCkr  
if (queue[j]>queue[k]) j L>I5f  
break; N9>'/jgZX  
SortUtil.swap(queue,j,k); Jq$6$A,f  
k = j; softfjl&l  
} '.}6]l  
} yNb#Ia  
utFcFd X  
} .:r2BgL  
eEg1-  
} \( Gf+  
],fwZd[t  
SortUtil: ~#N.!e4  
>%jEo'0;_  
package org.rut.util.algorithm; 3; -@<9  
Jnu}{^~  
import org.rut.util.algorithm.support.BubbleSort; rSc,\upz  
import org.rut.util.algorithm.support.HeapSort; a?xq*|?  
import org.rut.util.algorithm.support.ImprovedMergeSort; bH)8UQR%  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5{!a+  
import org.rut.util.algorithm.support.InsertSort; /pSUn"3  
import org.rut.util.algorithm.support.MergeSort; /v|68x6  
import org.rut.util.algorithm.support.QuickSort; FS]+s>  
import org.rut.util.algorithm.support.SelectionSort; MK!]y8+Z  
import org.rut.util.algorithm.support.ShellSort; Ztpm_P6  
c9cphZ(z  
/** {C,1w  
* @author treeroot yv#c =v|  
* @since 2006-2-2 J _[e9  
* @version 1.0 R"\u b"]  
*/ C&d"#I  
public class SortUtil { B'lxlYV1  
public final static int INSERT = 1; .9[8H:Fe  
public final static int BUBBLE = 2; xTksF?u)  
public final static int SELECTION = 3;  t3yQ/  
public final static int SHELL = 4; 8wH41v67F  
public final static int QUICK = 5; zDGg\cPj9  
public final static int IMPROVED_QUICK = 6; k_|v)\4B  
public final static int MERGE = 7; wr;|\<c  
public final static int IMPROVED_MERGE = 8; 8n."5,P  
public final static int HEAP = 9; Ep,0Z*j  
5LhJ8$W  
public static void sort(int[] data) { x" :Bw;~  
sort(data, IMPROVED_QUICK); =J[[>H'<d  
} GqK&'c   
private static String[] name={ G,mH!lSm,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~gLEhtW  
}; w'zO(6 `  
Fh!!T%5>C  
private static Sort[] impl=new Sort[]{ \aJ-q?=  
new InsertSort(), bTy' 5"  
new BubbleSort(), 3Mh,NQB  
new SelectionSort(), /PB3^d>Q2  
new ShellSort(), 61Iy{-/ZV  
new QuickSort(), >I8hFtAM  
new ImprovedQuickSort(), }5Tyzi(  
new MergeSort(), @qr3v>3X<  
new ImprovedMergeSort(), E't G5,/m  
new HeapSort()  _.J[w6  
}; ,j(p}t  
luxKgcU  
public static String toString(int algorithm){ &L~31Ayj&  
return name[algorithm-1]; )(|0KarF  
} /NN[gz  
,h(f\h(9  
public static void sort(int[] data, int algorithm) { JXy667_  
impl[algorithm-1].sort(data); /K<GN7vN  
} v BeU  
C$re$9U  
public static interface Sort { yM#trqv5  
public void sort(int[] data); 5, "^"*@<  
} -z~ V   
3PR7g  
public static void swap(int[] data, int i, int j) {  ~bWWu`h  
int temp = data; id[>!fQ=Y  
data = data[j]; pil*/&pB  
data[j] = temp; h C`p<jp/  
} B| 0s4E  
} j C1^>D  
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