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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。 5 <7sVd.  
插入排序: S*WLb/R2  
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package org.rut.util.algorithm.support; Nlu]f-i':  
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import org.rut.util.algorithm.SortUtil; F-D$Y?m  
/** |HwEwL+  
* @author treeroot ]tmMk7  
* @since 2006-2-2 Pup%lO`.0  
* @version 1.0 g$qM}#s0}  
*/ NK%Ok  
public class InsertSort implements SortUtil.Sort{ `SS[[FT$>  
}%0X7'  
/* (non-Javadoc) 5wv7]F<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y&$puiH-j  
*/ U8<C4  
public void sort(int[] data) { CH5>u  
int temp; ]?Q<lMG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I(Vg  
} 1buO&q!vn  
} LFvZ 7M\\  
} C87 9eeJ  
Na+h+wD.D  
} H,LJ$ py  
s&\krW &  
冒泡排序: | vxmgX)  
r,P`$-  
package org.rut.util.algorithm.support; 5>~D3?IAd  
R pT7Nr  
import org.rut.util.algorithm.SortUtil; /.sho\a  
KD- -w(4  
/** 4"\%/kG  
* @author treeroot vXG?8Q  
* @since 2006-2-2 }R_Rw:W  
* @version 1.0 t8*NldC  
*/ x]t$Zb/Uxa  
public class BubbleSort implements SortUtil.Sort{ BteeQ&A|~  
 eAG)+b  
/* (non-Javadoc) xRq A^Ad  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F#.ph?W  
*/ "ZFH_5<  
public void sort(int[] data) { |n~,{=  
int temp; v3<q_J'qT  
for(int i=0;i for(int j=data.length-1;j>i;j--){ o1uM(  
if(data[j] SortUtil.swap(data,j,j-1); >qd=lm <,  
} ?MS!t6  
} m!]J{OGG:  
} QH?sx k2  
}  , YlS  
tjx|;m7  
} uJ0Wb$%  
>=.3Vydi1  
选择排序: %al 5 {  
^1_CS*  
package org.rut.util.algorithm.support; n+nZ;GJ5d  
mmy/YP)  
import org.rut.util.algorithm.SortUtil; $xjfW/k?M  
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/** %Hhk 6tR,  
* @author treeroot z";(0%  
* @since 2006-2-2 3{wuifS  
* @version 1.0 YGRb|P-  
*/ .}:*tvot  
public class SelectionSort implements SortUtil.Sort { 7U2B=]<e-  
N7YCg  
/* O2"V'(  
* (non-Javadoc) >7~,w1t  
* e>bARK<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }w8yYI  
*/ 14*6+~38m&  
public void sort(int[] data) { M}q;\}  
int temp; &>QxL d#  
for (int i = 0; i < data.length; i++) { !YZKa-  
int lowIndex = i; w\{#nrhYU  
for (int j = data.length - 1; j > i; j--) { kp#XpcS  
if (data[j] < data[lowIndex]) { Oqq' r"S  
lowIndex = j; ?CcX>R-/  
} -= izu]Fb,  
} W=OryEV?  
SortUtil.swap(data,i,lowIndex); 7PBE(d%m  
} 16 \)C/*  
} emB<{kOkw  
%~,Fe7#p  
} IM5[O}aq  
%s^1de  
Shell排序: CF@*ki3X  
L4bYVTm|  
package org.rut.util.algorithm.support; C ,|9VH  
H4j1yD(d  
import org.rut.util.algorithm.SortUtil; '2|P-/jU  
4^ U%` 1  
/**  yK$aVK"  
* @author treeroot Ih4$MG6QC  
* @since 2006-2-2 1LAd5X  
* @version 1.0 1&<o3)L:  
*/ ]cVDXLj$  
public class ShellSort implements SortUtil.Sort{ RDjw|V  
Q]3]Z/i  
/* (non-Javadoc) lnLy"f"zV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,np|KoG|M  
*/ 'cQ,;y  
public void sort(int[] data) { ?mSZQF:d@  
for(int i=data.length/2;i>2;i/=2){ \7pEn  
for(int j=0;j insertSort(data,j,i); P#`M8k  
} zufsmY4P  
} R.F l5B  
insertSort(data,0,1); w5 ]lU  
} a|.IAxJ  
c h((u(G  
/** ,2+d+Zuh  
* @param data 8#- Nx]VM  
* @param j 11kyrv  
* @param i N:'!0|6?x-  
*/ .kMnq8u  
private void insertSort(int[] data, int start, int inc) { :Ea|FAeK8  
int temp; 2oRwDg&7|  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k;2.g$)W[c  
} AXSip  
} x(R;xB  
} -.ZP<,?@F  
-3azA7tzz  
} r|jM;  
m<kJH<!j  
快速排序: 4 2DMmwB   
^cSfkBh  
package org.rut.util.algorithm.support; }Nwp{["}]L  
+zq"dj_  
import org.rut.util.algorithm.SortUtil; r]D U  
t u{~:Z(  
/** 96QY0  
* @author treeroot &=$f\O1Ty  
* @since 2006-2-2 N-knhA  
* @version 1.0 gsM^Pu09ud  
*/ .=t:Uy  
public class QuickSort implements SortUtil.Sort{ jw {B8<@s  
^blw\;LB  
/* (non-Javadoc) "::2]3e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (_>Su QK  
*/ JMo r[*  
public void sort(int[] data) { J'7;+.s(  
quickSort(data,0,data.length-1); ^_DwuY  
} g\@.qKF  
private void quickSort(int[] data,int i,int j){ /IJy'@B  
int pivotIndex=(i+j)/2; YM'4=BlJHv  
file://swap x9a\~XL>a  
SortUtil.swap(data,pivotIndex,j); 8wOscL f:  
~u2f`67{  
int k=partition(data,i-1,j,data[j]); t8h*SHD9  
SortUtil.swap(data,k,j); cSV&p|  
if((k-i)>1) quickSort(data,i,k-1); nGYi mRYO  
if((j-k)>1) quickSort(data,k+1,j); ~yw]<{?  
|pWu|M _'  
} <!UnH6J.b  
/** eA-oqolY  
* @param data LD5`9-  
* @param i Tq?Ai_  
* @param j 7(h@5  
* @return RJerx:]  
*/ V@-Q&K#  
private int partition(int[] data, int l, int r,int pivot) { ~M} K]Li  
do{ tp7$t#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4m91XD  
SortUtil.swap(data,l,r); y2s(]# 8  
} 43M.Hj]  
while(l SortUtil.swap(data,l,r); JJ_ Z{  
return l; -aok]w m  
} E&y)`>Nq{  
.IdbaH _a  
} Y)pop :y t  
'b}RFzEn  
改进后的快速排序: TaHcvjhR  
OQKg/1  
package org.rut.util.algorithm.support; U), HrI>;  
IjRUr\l  
import org.rut.util.algorithm.SortUtil; 0NZ'(qf~9  
!ae?EJm"  
/** f)z(9JJL  
* @author treeroot L@6]~[JvP  
* @since 2006-2-2 *9kg \#  
* @version 1.0 (Q% @]  
*/ 5!qf{4j  
public class ImprovedQuickSort implements SortUtil.Sort { @!! u>1  
m+s*Io{Ip  
private static int MAX_STACK_SIZE=4096; 2 A!*8w  
private static int THRESHOLD=10; wyB]!4yy,  
/* (non-Javadoc) .-tR <{ g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kG!hqj  
*/ Y]0c%Fd  
public void sort(int[] data) { (ub(0 h0j  
int[] stack=new int[MAX_STACK_SIZE]; PLs`Ci|`  
a4~B  
int top=-1; U{oM*[  
int pivot; P<vU!`x% q  
int pivotIndex,l,r; +z?gf*G_W'  
W5`pQdk  
stack[++top]=0; (W:@v&p  
stack[++top]=data.length-1; mKO~`Wq%@  
c]#}#RJ`\  
while(top>0){ qQ3Q4R\  
int j=stack[top--]; 1#_ pj eG  
int i=stack[top--]; bs ~P  
mL`8COA  
pivotIndex=(i+j)/2; ~<VxtcEBz  
pivot=data[pivotIndex]; {*GBUv5  
k"DZ"JC  
SortUtil.swap(data,pivotIndex,j); oydP}X  
_p0Yhju?  
file://partition #9DJk,SP  
l=i-1; ~//9Nz~;3  
r=j; EDgtn)1  
do{ > VIFQ\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); TCyev[(  
SortUtil.swap(data,l,r); Z!|r>  
} %+j/nA1%S  
while(l SortUtil.swap(data,l,r); SQf[1}$ .  
SortUtil.swap(data,l,j); `f~bnL  
\^dse  
if((l-i)>THRESHOLD){ h?n?3x!(  
stack[++top]=i; @~ke=w6&pe  
stack[++top]=l-1; uVU)LOx  
} 1K@ieVc  
if((j-l)>THRESHOLD){ A ~vx,|I  
stack[++top]=l+1; (!{*@?S  
stack[++top]=j; 4lX_2QT]E  
} /FXvrH(  
^|Fy!kp  
} B(s^(__]  
file://new InsertSort().sort(data); >^g2 Tg:  
insertSort(data); tUULpx.h  
} ]m 3cm  
/** 7 SJ=2  
* @param data 0g: q%P0  
*/ RDDA^U7y#  
private void insertSort(int[] data) { cb)7$S  
int temp; M}11 tUl  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _w?!Mu  
} 5<PNl~0  
} u=qK_$d4  
} LhAW|];  
xP_%d,  
} NCi~. I  
~3gazTe9  
归并排序: D )`(b  
nm<VcCc  
package org.rut.util.algorithm.support; iLBORT !;  
|^5"-3Q  
import org.rut.util.algorithm.SortUtil; v?]a tb/h`  
*\'t$se+  
/** @hA`f4^  
* @author treeroot M-h+'G  
* @since 2006-2-2 n5"oXpcIx  
* @version 1.0 Co(N8>1  
*/ 1HNP@9ga  
public class MergeSort implements SortUtil.Sort{ 3\P*"65  
aG;F=e  
/* (non-Javadoc) "TaLvworb4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7:LEf"vRZ  
*/ V0>[bzI  
public void sort(int[] data) { sk9Ejaf6>  
int[] temp=new int[data.length]; D ON.)F  
mergeSort(data,temp,0,data.length-1); .+XK>jl +  
} IYq#|^)5+  
oS%(~])\  
private void mergeSort(int[] data,int[] temp,int l,int r){ ,h1\PT9ULY  
int mid=(l+r)/2; U'F}k0h?\'  
if(l==r) return ; Pi5MFw'v  
mergeSort(data,temp,l,mid); o>(<:^x9  
mergeSort(data,temp,mid+1,r); bl>W i@GL  
for(int i=l;i<=r;i++){ Jy}~ZY  
temp=data; $#n9C79Z@  
} iP9]b&  
int i1=l; '"7b;%EN'  
int i2=mid+1; V#$QKn`;  
for(int cur=l;cur<=r;cur++){ g)Hsd0  
if(i1==mid+1) Dx /w&v  
data[cur]=temp[i2++]; /y{fDCC  
else if(i2>r) NvIg,@}  
data[cur]=temp[i1++]; yc]_?S>9  
else if(temp[i1] data[cur]=temp[i1++]; 9c}C<s`M  
else JXkx!X_{  
data[cur]=temp[i2++]; +-;v+{  
} w{T$3F`@9  
} 8i;drvf  
7Z:HwZ  
} [>GblL  
m=E/um[D  
改进后的归并排序: bQI :N  
i03S9J  
package org.rut.util.algorithm.support; $H3C/|  
_z%\53h  
import org.rut.util.algorithm.SortUtil;  y_[VhZ%  
q7aqbkwz}  
/** R&t2   
* @author treeroot 9=iMP~?xF  
* @since 2006-2-2 &/^p:I  
* @version 1.0 L T`T~|pz  
*/ ,)\G<q yO6  
public class ImprovedMergeSort implements SortUtil.Sort { ,V]FAIJ  
]6v7iuvI  
private static final int THRESHOLD = 10; rT;l#<#VE  
tq}sedYhee  
/* }vB{6E+h/w  
* (non-Javadoc) 8Wtr,%82  
* aDz% %%:r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 34)l3UI~  
*/ pK{G2]OK{U  
public void sort(int[] data) { D8w.r"ne  
int[] temp=new int[data.length]; [8tpU&J  
mergeSort(data,temp,0,data.length-1); 2.);OFk+  
} [m< jM[w{  
*dB3Gu{ +  
private void mergeSort(int[] data, int[] temp, int l, int r) { l#ct;KZ  
int i, j, k; F\;l)  
int mid = (l + r) / 2; tD}{/`{_t  
if (l == r) 4$2HO `@uN  
return; jZ5ac=D&I  
if ((mid - l) >= THRESHOLD) $M-"az]  
mergeSort(data, temp, l, mid); `{w|2 [C3  
else BH}rg,]G  
insertSort(data, l, mid - l + 1); !F6rcDKI  
if ((r - mid) > THRESHOLD) 9(=+OQ6  
mergeSort(data, temp, mid + 1, r); "\9 beK:l  
else )knK'H(  
insertSort(data, mid + 1, r - mid); >3p8o@:  
qS}{O0  
for (i = l; i <= mid; i++) { ri3*~?k00  
temp = data; s;Zi   
} ~QE?GL   
for (j = 1; j <= r - mid; j++) { Vfq-H/+  
temp[r - j + 1] = data[j + mid]; FDBNKQV  
} ]B&jMj~y&  
int a = temp[l]; HCktgL:E=  
int b = temp[r]; 9ygNJX'~  
for (i = l, j = r, k = l; k <= r; k++) { Rdj3dg'<  
if (a < b) { Zn|lL0b{q  
data[k] = temp[i++]; Q}lY1LT`  
a = temp; ]U4C2}u  
} else { N1:)Z`r  
data[k] = temp[j--]; 7we='L&R  
b = temp[j]; 6]!Jo)BF  
} NS x-~)  
} ] :](xW%  
} ffOV7Dxy  
rP(;^8l"  
/** &ML-\aSal  
* @param data FhEfW7]0,  
* @param l Aba%QQQ  
* @param i [w  FK!?  
*/ HR'F  
private void insertSort(int[] data, int start, int len) { ~WmA55  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =':SOO7  
} ob)c0Pz  
} a}k5[)et  
} oSR;Im<2  
} y]k{u\2A  
d(D|rf,av  
堆排序: @&Af [X4s  
)h%tEY$AJ  
package org.rut.util.algorithm.support; ?O#"x{Pk  
@zsqjm  
import org.rut.util.algorithm.SortUtil; @# p{,L  
[GW;RjPE  
/** Qyj:!-o  
* @author treeroot k#5Qwxu`  
* @since 2006-2-2 z_$F)*PL  
* @version 1.0 3qp\jh=FE  
*/ jpiBHi]5+  
public class HeapSort implements SortUtil.Sort{ SUoUXh^!w  
Ez^wK~  
/* (non-Javadoc) 40;4=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9iK%@k  
*/ >\1j`/ :ZI  
public void sort(int[] data) { #/>OW2Ny  
MaxHeap h=new MaxHeap(); +39p5O!  
h.init(data); bqZ5GKUo  
for(int i=0;i h.remove(); _/}/1/y$Y  
System.arraycopy(h.queue,1,data,0,data.length); #t&L}=G{%  
} _GL:4  
Gl>*e|}  
private static class MaxHeap{ to] ~$~Q|>  
GUvEOD=p  
void init(int[] data){ h}GzQry1  
this.queue=new int[data.length+1]; ]6?6 k4@  
for(int i=0;i queue[++size]=data; =?1B|hdo  
fixUp(size); AUm5$;o,/  
} z dUSmb  
} lMb&F[KJ7  
U{&gV~  
private int size=0; {60U6n  
/E5>cqX4A  
private int[] queue; /V E|FTs  
5}'W8gV?  
public int get() { z7]GZF  
return queue[1]; FWQNO(  
} S,qEKWyLd  
9h0Y">}`b  
public void remove() { d01]5'f?o  
SortUtil.swap(queue,1,size--); \2y [Hy?  
fixDown(1);  D ~t  
} _G ^Cc}X  
file://fixdown .]K{8[:hq  
private void fixDown(int k) { %bgUU|CdA  
int j; =$F<Ac;&  
while ((j = k << 1) <= size) { OCbwV7q:  
if (j < size %26amp;%26amp; queue[j] j++; ?!$:I8T  
if (queue[k]>queue[j]) file://不用交换 {*K7P>&  
break; 6[& x7"  
SortUtil.swap(queue,j,k); cPPTGpqw  
k = j; }\aJ%9X02  
} DAx 1  
} Q-y`IPtA<  
private void fixUp(int k) {  ]YKxJ''u  
while (k > 1) { . MH;u3U  
int j = k >> 1; d2X?^  
if (queue[j]>queue[k]) 6l& ,!fd  
break; S0!w]Ku  
SortUtil.swap(queue,j,k); Z6IWQo,)Rh  
k = j; x5eSPF1  
} V ^hR%*i'  
}  Jju^4  
b-HELS`nX  
} jUd)|v+t  
&r1]A&  
} X v$"B-j  
E$USam  
SortUtil: o8u;2gZx  
y=SVS3D  
package org.rut.util.algorithm; Tx|y!uHh  
CRPE:7,D  
import org.rut.util.algorithm.support.BubbleSort; W?D-&X^ny  
import org.rut.util.algorithm.support.HeapSort; #;/ob-  
import org.rut.util.algorithm.support.ImprovedMergeSort; c]R27r E  
import org.rut.util.algorithm.support.ImprovedQuickSort; ~ ;ObT=  
import org.rut.util.algorithm.support.InsertSort; K#xL-   
import org.rut.util.algorithm.support.MergeSort; (ty&$  
import org.rut.util.algorithm.support.QuickSort; qpV"ii  
import org.rut.util.algorithm.support.SelectionSort; [Z;ei1l  
import org.rut.util.algorithm.support.ShellSort; puox^  
CI^s~M >  
/** #M@~8dAH}M  
* @author treeroot 2 :wgt  
* @since 2006-2-2 +P%k@w#<Z  
* @version 1.0 nB6 $*'  
*/ BRXDE7vw  
public class SortUtil { (h'Bz6K  
public final static int INSERT = 1; cc0T b  
public final static int BUBBLE = 2; "<&) G{  
public final static int SELECTION = 3; +`uNO<$~f  
public final static int SHELL = 4;  Lr0:y o  
public final static int QUICK = 5; zJov*^T-C  
public final static int IMPROVED_QUICK = 6; i(> WeC+  
public final static int MERGE = 7; `N8t2yF  
public final static int IMPROVED_MERGE = 8; 7QRkXs  
public final static int HEAP = 9; fNz(z\  
wlgR = l  
public static void sort(int[] data) { {@hJPK8  
sort(data, IMPROVED_QUICK); U7HfDDh  
} zxkO&DGRbN  
private static String[] name={ N9 h|_ax  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2}15FXgN  
}; *Sps^Wl  
X.ecA`0  
private static Sort[] impl=new Sort[]{ 8*Ty`G&v  
new InsertSort(), 8.Ufw. 5  
new BubbleSort(), n'[>h0  
new SelectionSort(), oRZe?h^r#  
new ShellSort(), 3^5h:OaT  
new QuickSort(), u~PZK.Uf0  
new ImprovedQuickSort(), Iw?*y.z|  
new MergeSort(), |K9*><P?)2  
new ImprovedMergeSort(), M4(57b[`  
new HeapSort() >>|47ps3  
}; QseV\;z  
}QBL{\E!  
public static String toString(int algorithm){ NF7  
return name[algorithm-1]; .5);W;`X  
} m^ Epw4eg  
6\k~q.U@XI  
public static void sort(int[] data, int algorithm) { IwRP,MQ~  
impl[algorithm-1].sort(data); 0!oqP1  
} _>ZC;+c?  
g)=$zXWhP  
public static interface Sort { O p1TsRm5L  
public void sort(int[] data); m#[9F']Z`  
} P^!g0K  
bR,Es~n  
public static void swap(int[] data, int i, int j) { Y=?{TX=6<[  
int temp = data; 'n=bQ"bQu  
data = data[j]; ~!=Am:-wr  
data[j] = temp; Bh'!aipk  
} l(Dr@LB~  
} \GQRpJ#h1  
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