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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。 ,C:^K`k&  
插入排序: \!%~( FM  
6}Rb-\N  
package org.rut.util.algorithm.support; JbN,K  
h8;H<Y;yQ  
import org.rut.util.algorithm.SortUtil; 0_=^#r4Mu  
/**  lsgZ  
* @author treeroot -KZ9TV # R  
* @since 2006-2-2 Vl'rO_?t  
* @version 1.0 1)f <  
*/ EoS6t  
public class InsertSort implements SortUtil.Sort{ 5v sn'=yN  
=c%gV]>G  
/* (non-Javadoc) k,ezB+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U8</aQLGF  
*/ -$,'|\Y  
public void sort(int[] data) { 8v=t-GJW  
int temp; zy|h1 .gd  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t@iw&> 8z  
} PO|gM8E1x?  
} 1DN  
} Q@"!uB.e  
&z>iqm"Ww  
} /03?(n= 3  
N9u {)u  
冒泡排序: `trcYmR=k  
Q<yvpT(  
package org.rut.util.algorithm.support; }}oIZP\qM  
V@\u<LO0G  
import org.rut.util.algorithm.SortUtil; Ql,WKoj*  
?.c:k;j  
/** j@4]0o  
* @author treeroot oq,*@5xV2  
* @since 2006-2-2 iT+t  
* @version 1.0 /XdLdA!v  
*/ d^0-|sx  
public class BubbleSort implements SortUtil.Sort{ anORoK.  
//bQD>NBO  
/* (non-Javadoc) |lyspD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5D mSgP:  
*/ }^*`&Lh  
public void sort(int[] data) { /74)c~.W  
int temp; Ty*+?#`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'L^M"f^I  
if(data[j] SortUtil.swap(data,j,j-1); j#YVv c%  
} 7324#HwS  
} X9rao n  
}  Gc;-zq  
} zXx A"  
:j`XU  
} V=Z%y$1Bc  
; NO#/  
选择排序: R?J8#JPXD  
QHtN_Q_F  
package org.rut.util.algorithm.support; 9QeBz`lm)  
#(Yd'qKo  
import org.rut.util.algorithm.SortUtil; ciW;sK8  
BLm}mb#/{  
/** =r&i`L{]  
* @author treeroot 6}*4co  
* @since 2006-2-2 AR g]GV/L  
* @version 1.0 y4H/CH$%  
*/ t{Ks}9B  
public class SelectionSort implements SortUtil.Sort { \t? ;p-+ta  
'yh)6mid  
/* eUD 5 V  
* (non-Javadoc) gUiZv8C  
* }hXmK.['  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <W*6=HZ'  
*/ A^4#6],%v  
public void sort(int[] data) { n+ s=u$%qn  
int temp; $]a*ZHd;2&  
for (int i = 0; i < data.length; i++) { .{(gku>g(  
int lowIndex = i; ifmX<'(9A  
for (int j = data.length - 1; j > i; j--) { $4]4G=o  
if (data[j] < data[lowIndex]) { V! .I>  
lowIndex = j; K'[kl'  
} V)I Tk \  
} +77j2W_0  
SortUtil.swap(data,i,lowIndex); R,-DP/ (im  
} =$_kkVQ$  
} 0 n|>/i  
U:|:Y=O?Q  
} /8/N  
8w~X4A,  
Shell排序: t ;y@;?~  
)t,efg  
package org.rut.util.algorithm.support; r4]hcoU  
{Ut,xi  
import org.rut.util.algorithm.SortUtil; _A=i2?g  
(7X^z&2  
/** d[p?B-7%  
* @author treeroot B!J&=*=e  
* @since 2006-2-2 T5_rPz  
* @version 1.0 iq5-eJmq  
*/ o3le[6C/8=  
public class ShellSort implements SortUtil.Sort{ TR:4$92:H  
4u1au1c  
/* (non-Javadoc) C0&ZQvvy1:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1Q$/L+uJ5  
*/ O#)YbaE  
public void sort(int[] data) { MO|8A18B  
for(int i=data.length/2;i>2;i/=2){ RuOse9  
for(int j=0;j insertSort(data,j,i); U bh)}G,Mg  
} w1+ %+x  
} 2hb>6Z;r]K  
insertSort(data,0,1); pwNF\ ={  
} .nei9Y*  
k%;oc$0G-3  
/** w%%*3[--X  
* @param data ?4_ME3$t  
* @param j Crezo?  
* @param i $/Llzpvny  
*/  >Xxi2Vy  
private void insertSort(int[] data, int start, int inc) { z:A_  
int temp; n -xCaq  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ziv*4  
} kXO c)  
} perhR!#J  
} ,be$ ~7qS  
u/J1Z>0  
} HHT8_c'CC#  
,]tMZ?n8  
快速排序: X:QRy9]  
p uW  
package org.rut.util.algorithm.support; <jh=W9.N_  
~eXI}KhBw6  
import org.rut.util.algorithm.SortUtil; {v2[x W  
D=M'g}l  
/** tV2o9!N4  
* @author treeroot D@m3bsMwe  
* @since 2006-2-2 OZ&SxR%q4  
* @version 1.0 6h1pPx7zU  
*/ k8,s<m  
public class QuickSort implements SortUtil.Sort{ _:KeSskuO  
<=%G%V_s  
/* (non-Javadoc) !14l[k+\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HE+D]7^  
*/ ,hCbx #h  
public void sort(int[] data) { "||' -(0  
quickSort(data,0,data.length-1); pbG v\S F  
} 72= 4#  
private void quickSort(int[] data,int i,int j){ zT'(I6 S:)  
int pivotIndex=(i+j)/2; e_3B\59k  
file://swap I:YE6${k!  
SortUtil.swap(data,pivotIndex,j); a#&\65D  
N"zl7.E  
int k=partition(data,i-1,j,data[j]); 5.lg*vh  
SortUtil.swap(data,k,j); 5qkyi]/U8  
if((k-i)>1) quickSort(data,i,k-1); fH% C&xj'&  
if((j-k)>1) quickSort(data,k+1,j); VI)hA ^ S  
nQG<OVRClS  
} \+<=O`  
/** ,t39~w  
* @param data ~l*[=0}  
* @param i r|ogF8YN  
* @param j c&"1Z/tR  
* @return &0OH:P%  
*/ n.1$p  
private int partition(int[] data, int l, int r,int pivot) { wYh]3  
do{ ^CB@4$!   
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); tD]vx`0>  
SortUtil.swap(data,l,r); F/"lJ/I  
} e?;  
while(l SortUtil.swap(data,l,r); ^O**ZndB/  
return l; ^ j<2s"S  
} 9<5ii  
*7),v+ET  
} @`HW0Y_:  
*\^(-p~M  
改进后的快速排序: X&!($*/  
4!Lj\.!$  
package org.rut.util.algorithm.support; I3YSW  
;z~j%L%b  
import org.rut.util.algorithm.SortUtil; 5w</Ga  
`(~oZbErM  
/** XKvH^Z4h{l  
* @author treeroot +aOX{1w  
* @since 2006-2-2 b3q&CJ4|  
* @version 1.0 v5*JBW+c*  
*/ ]MB6++.e  
public class ImprovedQuickSort implements SortUtil.Sort { !Za yN  
'NDr$Qc3  
private static int MAX_STACK_SIZE=4096; gVs@T'  
private static int THRESHOLD=10; #X0Y8:vj  
/* (non-Javadoc) *Q;?p hr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bu4@FIK!C  
*/ =@MJEo`D  
public void sort(int[] data) { KuMH,rXF  
int[] stack=new int[MAX_STACK_SIZE]; <,Jx3y q  
(.kzJ\x  
int top=-1; K/8TwB?I  
int pivot; ~zQxfl/  
int pivotIndex,l,r; H_w?+Rig  
Ce} m_  
stack[++top]=0; @R;&PR#5  
stack[++top]=data.length-1; E|_}?>{R  
"1rT> ASWI  
while(top>0){ !'>,37()  
int j=stack[top--]; 2Vx x  
int i=stack[top--]; ~ F>'+9?Sn  
]aYuBoj  
pivotIndex=(i+j)/2; FDuIm,NI  
pivot=data[pivotIndex]; STz@^A  
1+qP7 3a^  
SortUtil.swap(data,pivotIndex,j); 1tlqw  
l$m}aQ%h  
file://partition s $ ?;C  
l=i-1; Fm+V_.H/;  
r=j; ]2MX7  
do{ 54oJ MW9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ow#8oUf=  
SortUtil.swap(data,l,r); ,Uy;jk  
} i\=I` Yn+  
while(l SortUtil.swap(data,l,r); wqgKs=y  
SortUtil.swap(data,l,j); As j<u!L  
|Gr@Mi5  
if((l-i)>THRESHOLD){ ^,` L!3  
stack[++top]=i; l/A!ofc#)  
stack[++top]=l-1; <|hrmwk|  
} `)Y 5L}c=  
if((j-l)>THRESHOLD){ *pyC<4W  
stack[++top]=l+1; JY3!jtv  
stack[++top]=j; fr&p0)85>B  
} XY<KLO%  
6rlvSdB  
} h;~NA}>  
file://new InsertSort().sort(data); /buj(/q^#  
insertSort(data); A>\3FeU>UC  
} x!u6LDq0  
/** 7H4kj7UK  
* @param data ,_K:DSiB  
*/ .`oKd@I*"  
private void insertSort(int[] data) { k7M{+X6[  
int temp; P1<McQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !e('T@^u6u  
} .ZM0cwF  
} jH<,dG:{  
} R S] N%`]  
Pd~z%VoO  
} 1+Vei<H$  
Bo ??1y  
归并排序: m;S%RB^~H  
_:JV-lM  
package org.rut.util.algorithm.support; EW/NH&{  
<ILi38%Y  
import org.rut.util.algorithm.SortUtil; M`xI N~  
_,w*Rv5=  
/** {fMo#`9=  
* @author treeroot 01IfvK  
* @since 2006-2-2 x[$ :^5V  
* @version 1.0 jI$7vmO  
*/ rK4 pYo  
public class MergeSort implements SortUtil.Sort{ HN<e)E38  
\3)U~[O>:  
/* (non-Javadoc) [ * !0DW`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {7Kl #b  
*/ x(rl|o  
public void sort(int[] data) { {wD "|K  
int[] temp=new int[data.length]; Z*'_/Grv?  
mergeSort(data,temp,0,data.length-1); /}s#   
} ")w~pZE&+  
,fj~BkW{  
private void mergeSort(int[] data,int[] temp,int l,int r){ YW"nPZNPy~  
int mid=(l+r)/2; ^;@!\Rc  
if(l==r) return ; }mS+%w"j  
mergeSort(data,temp,l,mid); fg GTm:   
mergeSort(data,temp,mid+1,r); q4Y'yp`?K;  
for(int i=l;i<=r;i++){ t<cWMx5ra  
temp=data; tz2$j@!=  
} ]Y f8  
int i1=l; p(A[ah_  
int i2=mid+1; Y }8HJTMB  
for(int cur=l;cur<=r;cur++){ i^ eDM.#X  
if(i1==mid+1) MU1T="N^+  
data[cur]=temp[i2++]; Bc}e ??F  
else if(i2>r) ^!SwY_>  
data[cur]=temp[i1++]; n'@XgUI,  
else if(temp[i1] data[cur]=temp[i1++]; PH!rWR  
else u)l[*";S  
data[cur]=temp[i2++]; 4*Z>-<W=  
} g]._J  
} 3UJSK+d\  
!XY}\zKq  
} M'$?Jp#]}  
hy@e(k|S]U  
改进后的归并排序: Na`vw  
KPa&P:R3  
package org.rut.util.algorithm.support; &-|(q!jm  
;*e$k7}F  
import org.rut.util.algorithm.SortUtil; 8FBXdk?A  
Mey=%Fv  
/** ]$A6krfh|  
* @author treeroot <2PO3w?Z  
* @since 2006-2-2 Il!#]  
* @version 1.0 ~Yl%{1  
*/ BEii:05  
public class ImprovedMergeSort implements SortUtil.Sort { \05 n$.  
)H<F([Jri  
private static final int THRESHOLD = 10; ffh3okyW0  
g=kuM  
/* ;3N>m| ?D=  
* (non-Javadoc) !,;/JxfgVh  
* t%30B^Ii%K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~`VD}{[,B  
*/ OyTp^W`&  
public void sort(int[] data) { U9yR~pw  
int[] temp=new int[data.length]; liVj-*m  
mergeSort(data,temp,0,data.length-1); c+]5[6  
} 'M3V#5l)@|  
qISzn04  
private void mergeSort(int[] data, int[] temp, int l, int r) { {@3p^b*E)1  
int i, j, k; yyu f  
int mid = (l + r) / 2; 1EA}[x  
if (l == r) 2]-xmS>|b  
return; YX6[m6L U  
if ((mid - l) >= THRESHOLD) m*H6\on:  
mergeSort(data, temp, l, mid); HiDL:14  
else ~(d#T|ez  
insertSort(data, l, mid - l + 1); T\$r|  
if ((r - mid) > THRESHOLD) 8nHFNOv6  
mergeSort(data, temp, mid + 1, r); tU(vt0~b  
else uHpSE?y/  
insertSort(data, mid + 1, r - mid); 5SmgE2}  
. g95E<bd  
for (i = l; i <= mid; i++) { 4Nz]LK%@  
temp = data; Rac4a@hZ  
} EXTQ:HSES  
for (j = 1; j <= r - mid; j++) { ,#QLc  
temp[r - j + 1] = data[j + mid]; ao.v]6a  
} "ku ?A^f  
int a = temp[l]; PEHaH"|([=  
int b = temp[r]; ]h0K*{  
for (i = l, j = r, k = l; k <= r; k++) { XveG#oyiU  
if (a < b) { !)TO2?,^  
data[k] = temp[i++]; @+ U++  
a = temp; G9i?yd4n=B  
} else { f8?c[%br  
data[k] = temp[j--]; .f]2%utHB  
b = temp[j];  Gu P1  
} A/{0J\pA  
} ISl-W1u}  
} X7gtR|[  
{QRrAi  
/** vx8-~Oq{|;  
* @param data b".e6zev  
* @param l t=$Hv  
* @param i pJ 7="n  
*/ .8.LW4-ff  
private void insertSort(int[] data, int start, int len) { > : ;*3  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z^r  
} B '"RKs]  
} />\6_kT  
} 3m9ab"  
} c_YP#U  
h16i]V  
堆排序: !Cv:,q  
urK[v  
package org.rut.util.algorithm.support; #XJ`/\E]  
t*'U|K4L/  
import org.rut.util.algorithm.SortUtil; XLNR%)l  
(jY -MF3  
/** '6&a8&:  
* @author treeroot )+S^{tt  
* @since 2006-2-2 =(Ll}V,  
* @version 1.0 (]l}QR%Bxu  
*/ -I\Y m_)  
public class HeapSort implements SortUtil.Sort{ $rG~0  
L)Iv] u  
/* (non-Javadoc) Y$SwQ;wl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .}.63T$h9  
*/ xYGB{g]  
public void sort(int[] data) { M >BcYbXf  
MaxHeap h=new MaxHeap(); lB Y"@N  
h.init(data); {tlt5p!4  
for(int i=0;i h.remove(); pl{Pur ;i  
System.arraycopy(h.queue,1,data,0,data.length); ,:e##g~k  
} LYv$U;*+  
sZ!/uN!6  
private static class MaxHeap{ Bco_\cpt]z  
tL!R^Tf  
void init(int[] data){ J|z>5Z  
this.queue=new int[data.length+1]; >pV|c\  
for(int i=0;i queue[++size]=data; ,,-g*[/3  
fixUp(size); C {GSf`D!T  
} -%*w&',G  
} i!!1^DMrw  
7fg +WZ  
private int size=0; _m+64qG_8'  
KF#,Q  
private int[] queue; OEN!~-u  
UaQR0,#0y  
public int get() { J,bE[52  
return queue[1]; *0 0K3  
} FYe(S V(9  
N!fTt,  
public void remove() { HktvUJ(Ii  
SortUtil.swap(queue,1,size--); %S<0l@=5`l  
fixDown(1); Xy>+r[$D:  
} R0n# FL^E  
file://fixdown q~^qf  
private void fixDown(int k) { `nxm<~-\  
int j; MMpGI^x!-X  
while ((j = k << 1) <= size) { 0koC;(<n  
if (j < size %26amp;%26amp; queue[j] j++; 1%?J l~M  
if (queue[k]>queue[j]) file://不用交换 u49v,,WGw  
break; bk**% ]  
SortUtil.swap(queue,j,k); MMMuT^X  
k = j; ng-g\&-  
} 7n-;++a5]  
} K&t+3O  
private void fixUp(int k) { @c<*l+Qc  
while (k > 1) { ~f[AEE~,s+  
int j = k >> 1; pV>M, f  
if (queue[j]>queue[k]) |G+6R-_  
break; ;$Eg4uX  
SortUtil.swap(queue,j,k); `Ns$HV  
k = j; H0zKL]D'>  
} =kp-[7  
} 6n{`t/  
cax]l O  
} ~Bll\3-=  
 [>IAS>  
} A8?uCkG  
f\W1u#;u)  
SortUtil: %<|w:z$vp  
n5Ad@Bg  
package org.rut.util.algorithm; l .8@F  
t;7 tuq   
import org.rut.util.algorithm.support.BubbleSort; w`kn!k8  
import org.rut.util.algorithm.support.HeapSort; .^<4]  
import org.rut.util.algorithm.support.ImprovedMergeSort; k^ CFu  
import org.rut.util.algorithm.support.ImprovedQuickSort; _;] 3w  
import org.rut.util.algorithm.support.InsertSort; ]]\\Y|0  
import org.rut.util.algorithm.support.MergeSort; cxBu2( Y  
import org.rut.util.algorithm.support.QuickSort; qSRE)C=)  
import org.rut.util.algorithm.support.SelectionSort; !ejLqb  
import org.rut.util.algorithm.support.ShellSort; G+^Q _w  
sx;7  
/** lg)jc3  
* @author treeroot qVOlUH  
* @since 2006-2-2 ,&Iw5E[  
* @version 1.0 ]] R*sd*  
*/ -^m]Tb<u  
public class SortUtil { c#?JW:^|Df  
public final static int INSERT = 1; A.a UWh  
public final static int BUBBLE = 2; t(-`==.R  
public final static int SELECTION = 3; 0ZY.~b'eu  
public final static int SHELL = 4; }<y-`WB  
public final static int QUICK = 5; {&_1/  
public final static int IMPROVED_QUICK = 6; Ww9%6 #i t  
public final static int MERGE = 7; 1+1Z]!nG#!  
public final static int IMPROVED_MERGE = 8; K !&{k94  
public final static int HEAP = 9; F ] e]  
H 1`}3}"  
public static void sort(int[] data) { }@ Nurs)%_  
sort(data, IMPROVED_QUICK); fiuF!<#;6  
} ys+ AY^/  
private static String[] name={ (1`z16  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;Kq/[$~0  
}; V87?J w%2  
|D `r o  
private static Sort[] impl=new Sort[]{ h,-8( S  
new InsertSort(), Tx)X\&ij&  
new BubbleSort(), t2)S61Vr  
new SelectionSort(), zmV5k  
new ShellSort(), iNn]~L1  
new QuickSort(), Q;m:o8Q5  
new ImprovedQuickSort(), [X +E  
new MergeSort(), 6#egy|("nF  
new ImprovedMergeSort(), *>x~`  
new HeapSort()  3z^l  
}; T~shJ0%  
MO7:ZYq  
public static String toString(int algorithm){ ,2H@xji [  
return name[algorithm-1]; 0/".2(\}T  
} n9.` 5BH7/  
h,:8TMJRRN  
public static void sort(int[] data, int algorithm) { >Qk4AMIO  
impl[algorithm-1].sort(data); cVrses^yE  
} y'ZRoakz)  
_wa1R+`_  
public static interface Sort { ,uEi*s>  
public void sort(int[] data); ?NV3]vl  
} y:TLGQ0  
5ZG-3qj  
public static void swap(int[] data, int i, int j) { pNY+E5  
int temp = data; yqdh LX|Mk  
data = data[j]; zLQplw`#  
data[j] = temp; giU6f!%  
} 39s%CcI`k  
} L;a> J  
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