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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。 (1cB Tf  
插入排序: h1?xfdvGd  
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package org.rut.util.algorithm.support; kMW9UUw  
)*_G/<N) |  
import org.rut.util.algorithm.SortUtil; xq.kH|bH  
/** aA$\iFYA  
* @author treeroot P$z%:Q  
* @since 2006-2-2 kxJs4BY0  
* @version 1.0 0e&&k  
*/ 5=*i!c _m  
public class InsertSort implements SortUtil.Sort{ <#8}![3Q  
<}RD]Sc$1  
/* (non-Javadoc) 'C}ku>B_r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -'O|D}  
*/ 2ih}?%H8  
public void sort(int[] data) { j|8!gW  
int temp; $S' TW3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Wtaz@ +  
} xKUWj<+/  
} |11vm#  
} ^X6e\]yj  
&*o4~6pQ#  
} ,FP0n  
` Ft-1eE  
冒泡排序: ^O<v'\!z-  
`oe=K{aX  
package org.rut.util.algorithm.support; dLGHbeZ[(  
=^p}JhQ  
import org.rut.util.algorithm.SortUtil; E5A"sB   
3f$n8>mq  
/** s#<fj#S  
* @author treeroot )-"<19eu  
* @since 2006-2-2 4<tbZP3/6)  
* @version 1.0 X2I_,k'fQ  
*/ [(a3ljbRX  
public class BubbleSort implements SortUtil.Sort{ 0t7)x8c  
N"<.v6Z  
/* (non-Javadoc) |%5pzYe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O*/%z r  
*/ S]=.p-Am  
public void sort(int[] data) { IAzFwlO9  
int temp; p2(ha3PW  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .Y2Hd$rs  
if(data[j] SortUtil.swap(data,j,j-1); NRG06M  
} #5h_{q4l  
} $Tv~ *|a  
} @r[SqGa:  
} mW{uChHP  
l?IeZisX  
} 94O\M RQ*  
Z,AY<[/C  
选择排序: O Lt0Q.{  
@f"[*7Q`/  
package org.rut.util.algorithm.support; BPkL3Ev1V  
-rYb{<;ST  
import org.rut.util.algorithm.SortUtil; L<oQKe7Q:  
}|/A &c  
/** Z  #  
* @author treeroot (Z @dz  
* @since 2006-2-2 MCTJ^g"D  
* @version 1.0 D^>d<LX  
*/ (e5Z^9X  
public class SelectionSort implements SortUtil.Sort { ^w%%$9=:r  
wbOYtN Y@  
/* !w UznyYwt  
* (non-Javadoc) IhK SwT  
* h}'Hst  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q2F `q. j  
*/ Lp"OXJ*es  
public void sort(int[] data) { i,"Xw[H*s  
int temp; 9i 9 ,X^=  
for (int i = 0; i < data.length; i++) { %'g)MK!e  
int lowIndex = i; (!8b$) k  
for (int j = data.length - 1; j > i; j--) { l'Za"TL:  
if (data[j] < data[lowIndex]) { F{QOu0$cA4  
lowIndex = j; "0nsYE  
} XPf{R619  
} [?:MIl#!  
SortUtil.swap(data,i,lowIndex); KF(y`(8f  
} x0%m}P/  
} # hn  
R+ \%  
} \tvL<U"'  
bh5P98s  
Shell排序: W tw,YFT  
( ./MFf  
package org.rut.util.algorithm.support; rZ+4kf6S   
xx1lEcj  
import org.rut.util.algorithm.SortUtil; &QD)1b[U  
Z~h6^h   
/** k7@QFw4 j  
* @author treeroot 3 eF c  
* @since 2006-2-2 @=AQr4&  
* @version 1.0 'MX|=K!C  
*/ !%}n9vr!}\  
public class ShellSort implements SortUtil.Sort{ )M"NMUuU"  
@,= pG  
/* (non-Javadoc) ,J+L_S+B~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "8uNa  
*/ p*g)-/mA  
public void sort(int[] data) { 451.VI}MR  
for(int i=data.length/2;i>2;i/=2){ 68bvbig  
for(int j=0;j insertSort(data,j,i); Kv!:2br  
} mzM95yQ^Z  
} ZZ{c  
insertSort(data,0,1); %U}6(~  
} jK/F zD0-  
x ~)~v?>T  
/** />8A?+g9u  
* @param data V&ETt.91Ft  
* @param j u"oO._a(  
* @param i e(^I.`9z  
*/ o ~y{9Q  
private void insertSort(int[] data, int start, int inc) { 2DsP "q79k  
int temp; urkuG4cY  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )lt1I\n*k  
} Opf)TAl{  
} ~a3u['B  
} w(`g)`  
/d6Rd l`w  
} S-\wX.`R1  
FsO-xG"@"  
快速排序: ud)WH|Z  
\WnTpl>B  
package org.rut.util.algorithm.support; R0#scr   
@$5~`?  
import org.rut.util.algorithm.SortUtil; k kD#Bb  
C[%&;\3S@  
/** Sn'!Nq>  
* @author treeroot P}a$#a'!  
* @since 2006-2-2 q$yg^:]2  
* @version 1.0 #E=8kbD7  
*/ i" u|119  
public class QuickSort implements SortUtil.Sort{ =AzkE]   
05HCr"k  
/* (non-Javadoc) cs\=8_5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t 3N}):  
*/ [S]q'c)  
public void sort(int[] data) { 44~ReN}`  
quickSort(data,0,data.length-1); UMNNAX  
} |Fze9kZO  
private void quickSort(int[] data,int i,int j){ H!}L(gjEG  
int pivotIndex=(i+j)/2; z}-R^"40  
file://swap D}}?{pe  
SortUtil.swap(data,pivotIndex,j); z]%@r 7  
Jia@HrLR  
int k=partition(data,i-1,j,data[j]); W\Scak>  
SortUtil.swap(data,k,j); `Nvhp]E  
if((k-i)>1) quickSort(data,i,k-1); BcpbS%S  
if((j-k)>1) quickSort(data,k+1,j); b p?TO]LH  
KK >j V  
} Yz[Rl ^  
/** _8K8Ai-~.>  
* @param data i83Jy w,f  
* @param i N lm}'Xt  
* @param j lU=VCuW!  
* @return Jpp-3i.F#  
*/ '>1M~B  
private int partition(int[] data, int l, int r,int pivot) { D2D+S  
do{ MD1X1,fk  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c 8  
SortUtil.swap(data,l,r); &@|? %  
} S/pU|zV[  
while(l SortUtil.swap(data,l,r); TBJ?8W(  
return l; euT=]j  
} <W3p!  
7z,  $  
} @V^.eVM\R  
$U7/w?gc'  
改进后的快速排序: sVP\EF8PY  
Kc^ctAk7;  
package org.rut.util.algorithm.support; P%yL{  
 Jn|<G  
import org.rut.util.algorithm.SortUtil; ^9hc`.5N&?  
v_%6Ly  
/** ("}Hs[  
* @author treeroot 8'3&z-  
* @since 2006-2-2 `g(#~0R  
* @version 1.0 k 75 p  
*/ 6 mLC{X[  
public class ImprovedQuickSort implements SortUtil.Sort { =&"pG` x  
O{byMV{Ou  
private static int MAX_STACK_SIZE=4096; 1#"wfiW  
private static int THRESHOLD=10; B[8 RBTsA  
/* (non-Javadoc) 7yg {0a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [D+PDR  
*/ GFbn>dY  
public void sort(int[] data) { G] tT=X[  
int[] stack=new int[MAX_STACK_SIZE]; <x;g9Z>(  
jM6$R1HX  
int top=-1; ] X]!xvN@  
int pivot; B&59c*K  
int pivotIndex,l,r; Z \ @9*  
.@mZG<vg  
stack[++top]=0; O(0a l#Fvj  
stack[++top]=data.length-1; BOvJEs!UX  
f`>\bdz  
while(top>0){ `'r]Oe  
int j=stack[top--]; JF}i=}  
int i=stack[top--]; KdHkX+-R  
}>y~P~`S:  
pivotIndex=(i+j)/2; lc fAb@}2  
pivot=data[pivotIndex]; (?XIhpd  
ny^uNIRPR  
SortUtil.swap(data,pivotIndex,j); q |Pebe=  
p*cyW l  
file://partition Mx93D   
l=i-1; dXY}B=C  
r=j; 5B8/"G  
do{ *qL2=2  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); leizjL\P  
SortUtil.swap(data,l,r); y<`:I|y  
} V5h_uGOD  
while(l SortUtil.swap(data,l,r); e>!]_B1ad  
SortUtil.swap(data,l,j); *CF80DJ  
;VCFDE{K=  
if((l-i)>THRESHOLD){ F [-D +Nka  
stack[++top]=i; O7Jp ;  
stack[++top]=l-1; =r`E%P:  
} AoxORPp'  
if((j-l)>THRESHOLD){ 4TU\SP8sM  
stack[++top]=l+1; "AMwo(Yi  
stack[++top]=j; bfJ<~ss/  
} Q(1R=4?.Z  
xK1w->[  
} A~?)g!tS<  
file://new InsertSort().sort(data); 5f@&XwD9  
insertSort(data); 9 s2z=^  
} V+0pvgS[  
/** 6,~ %  
* @param data sKiy 1Ww  
*/ 1#>uqUxah  
private void insertSort(int[] data) { d--6<_q  
int temp; u, 72Mm>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r`)'Kd  
} +['1~5  
} n^G[N-\3  
} yQu/({D  
,FRa6;  
} XNvlx4  
i}<fg*6@E  
归并排序: 0H}O6kU  
4.kn , s  
package org.rut.util.algorithm.support; 3v#F0s|  
T0@<u  
import org.rut.util.algorithm.SortUtil; 4|eI_u{_  
@Y9tkJIt  
/** 5wvh @Sc\  
* @author treeroot cUi6 On1C  
* @since 2006-2-2 hG9Mp!d91  
* @version 1.0 h;cw=G  
*/ KUq(&H7  
public class MergeSort implements SortUtil.Sort{ =7~;*Ts  
#.}&6ZP  
/* (non-Javadoc) XK0lv8(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [Q8vS;.  
*/ <1~_nt~(*  
public void sort(int[] data) { [*ug:PG  
int[] temp=new int[data.length]; K7qR  
mergeSort(data,temp,0,data.length-1); 6k37RpgH  
} *'n=LB8R  
{ueDwnZ  
private void mergeSort(int[] data,int[] temp,int l,int r){ URr{J}5  
int mid=(l+r)/2; 2'ws@U}lR  
if(l==r) return ; VF<VyWFC0`  
mergeSort(data,temp,l,mid); _w5c-\-PUM  
mergeSort(data,temp,mid+1,r); vhU $GG8  
for(int i=l;i<=r;i++){ Q?Xqf7y  
temp=data; -3y $j+  
} a63Ud<_a7  
int i1=l; 01%0u8U  
int i2=mid+1; gHWsKE  %  
for(int cur=l;cur<=r;cur++){ mI;\ UOh'  
if(i1==mid+1) NeewV=[%  
data[cur]=temp[i2++]; (I1^nrDP.  
else if(i2>r) 1:I _ ;O_  
data[cur]=temp[i1++]; b^P\Kky  
else if(temp[i1] data[cur]=temp[i1++]; Ob|tA  
else Q'^$;X~-<  
data[cur]=temp[i2++]; $D*Yhv!/  
} [XA:pj;rg'  
} vcOw`oS  
/5f=a  
} cdL0<J b,  
|Yi_|']#  
改进后的归并排序: &c= 3BEh  
4%jQHOZ  
package org.rut.util.algorithm.support; cm>+f^4?n  
>+[{m<Eq  
import org.rut.util.algorithm.SortUtil; ge{%B~x  
j  W -K  
/** clT[ ?8*  
* @author treeroot HNX/#?3  
* @since 2006-2-2 [hiV #  
* @version 1.0 3HndE~_C&  
*/ lp1GK/!s  
public class ImprovedMergeSort implements SortUtil.Sort { wr6(C:  
WsmP]i^Q  
private static final int THRESHOLD = 10; 8/|1FI  
R8j\CiV17  
/* +DSZ(Zb4qY  
* (non-Javadoc) pf&SIG  
* xwijCFI*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '^:q|h  
*/ [5P1 pkZ  
public void sort(int[] data) { &:=[\Ws R  
int[] temp=new int[data.length]; ~2XiKY;W?  
mergeSort(data,temp,0,data.length-1); 9@ ^*\s  
} X/S%0AwZ  
,Mn?h\  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2cv=7!K4Uv  
int i, j, k; 5pxw[c53#  
int mid = (l + r) / 2; ~/Kqkhq+c  
if (l == r) 2&<&q J  
return; 6?l|MU"Q.  
if ((mid - l) >= THRESHOLD) ~:UAL}b{\~  
mergeSort(data, temp, l, mid); ~=Fp0l)#  
else Rdy-6  
insertSort(data, l, mid - l + 1); Ke\FzZ]  
if ((r - mid) > THRESHOLD) U]iZ3^8VT  
mergeSort(data, temp, mid + 1, r); W=!D[G R  
else 5e c T.  
insertSort(data, mid + 1, r - mid); 6"o@d8>v  
)!l1   
for (i = l; i <= mid; i++) { ]~'pYOB  
temp = data; -$f$z(h  
} G>+iisb%  
for (j = 1; j <= r - mid; j++) {  11-?M  
temp[r - j + 1] = data[j + mid]; | +aD%'|  
} w `>g^_xsg  
int a = temp[l]; S\A9r!2  
int b = temp[r]; tfd!;`B  
for (i = l, j = r, k = l; k <= r; k++) { 212  
if (a < b) { YM +4:P2  
data[k] = temp[i++]; D^H4]7wG@  
a = temp; SrvC34<7  
} else { }vX/55  
data[k] = temp[j--]; n'<F'1SWv  
b = temp[j]; b5UIX Kim  
} g;</|Z  
} pIvr*UzY  
} {9h`h08?z  
_I #a `G  
/** yJHFo[wGMJ  
* @param data (!diPwcv  
* @param l D~f[Rg  
* @param i (fC U+  
*/ h_xzqElZu  
private void insertSort(int[] data, int start, int len) { FmtV[C #  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5[rA>g~  
} M}!E :bv'  
} S>EO6z#   
} j:J7  
} 0/b3]{skK  
G\H|\i  
堆排序: K]Z];C#)  
W0 N*c*k  
package org.rut.util.algorithm.support; xayd_RB9  
T2MXwd&l  
import org.rut.util.algorithm.SortUtil; TM`6:5ONv  
w?A6S-z  
/** p!p:LSk"/b  
* @author treeroot ,Zs*07!$f  
* @since 2006-2-2 4k=LVu]Kcr  
* @version 1.0 43o!Vr/ S  
*/ Gq;!g(  
public class HeapSort implements SortUtil.Sort{ t p3 !6I6  
Z oQPvs7_  
/* (non-Javadoc) G:!'hadw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :LX (9f   
*/ [|oOP$u  
public void sort(int[] data) { JCZ5q9b  
MaxHeap h=new MaxHeap(); kk7M$)>d  
h.init(data); E'F87P^>  
for(int i=0;i h.remove(); HmVpxD+  
System.arraycopy(h.queue,1,data,0,data.length); s7na!A[  
} oD7^9=#  
_[u fH*  
private static class MaxHeap{ >$N ?\\#  
sGFC?1r?\  
void init(int[] data){ OA8iTn  
this.queue=new int[data.length+1]; aX(Y `g)|  
for(int i=0;i queue[++size]=data; OW1\@CC-69  
fixUp(size); OmC F8:\/  
} rsC^Re:*jr  
} f-a+&DB9  
{t QZqqdn@  
private int size=0; 5jK9cF$>  
v L!?4k  
private int[] queue; f!+G1z}iA  
]sV) '-  
public int get() { CC{{@  
return queue[1]; ev%}\^Vl[  
} 8/+x1,S%  
aj@<4A=;  
public void remove() { K6@9=_A  
SortUtil.swap(queue,1,size--); 'mU7N<Q$qQ  
fixDown(1); ,L9ioYbp  
} C: <TJ  
file://fixdown *WZ?C|6+  
private void fixDown(int k) { (eF "[,z  
int j; s N|7   
while ((j = k << 1) <= size) { ~<Sb:I zld  
if (j < size %26amp;%26amp; queue[j] j++; szU_,.\  
if (queue[k]>queue[j]) file://不用交换 ZH8Oidj`  
break; x"n)y1y  
SortUtil.swap(queue,j,k); &{H LYxh   
k = j; <& p0:S7  
} _q1E4z  
} @}iY(-V  
private void fixUp(int k) { B>,&{ah/5J  
while (k > 1) { Fd/.\s  
int j = k >> 1;  wA7^   
if (queue[j]>queue[k]) %L eZd}v  
break; Jx4"~ 4  
SortUtil.swap(queue,j,k); %t J@)  
k = j; !O*uQB  
} xE%sPWbj  
} )NL_))\  
$WHmG!)*  
} B0eKj=y;  
qB44;!(  
} Z2hIoCT  
S|v")6  
SortUtil: (b>B6W\&  
e95@4f^K2  
package org.rut.util.algorithm; Ob>M]udn  
hTK6N  
import org.rut.util.algorithm.support.BubbleSort; M|uWSG  
import org.rut.util.algorithm.support.HeapSort; /$?7L(  
import org.rut.util.algorithm.support.ImprovedMergeSort; %:hU:+G E  
import org.rut.util.algorithm.support.ImprovedQuickSort; v\b@;H`  
import org.rut.util.algorithm.support.InsertSort; ,T\)%q  
import org.rut.util.algorithm.support.MergeSort; 5t-dvYgU  
import org.rut.util.algorithm.support.QuickSort; mnS F=l;;  
import org.rut.util.algorithm.support.SelectionSort; sDzlNMr?P+  
import org.rut.util.algorithm.support.ShellSort; BP`'1Ns  
Fy-N U  
/** PcK;L(  
* @author treeroot 4J6,_8`U  
* @since 2006-2-2 %$H~  
* @version 1.0 ~AbTbQ3  
*/ leomm+f^  
public class SortUtil { ej&ZE n  
public final static int INSERT = 1; La#otuw+?  
public final static int BUBBLE = 2; STY\c5  
public final static int SELECTION = 3; :r,o-D  
public final static int SHELL = 4; `' "125T  
public final static int QUICK = 5; ^t#W?rxp&  
public final static int IMPROVED_QUICK = 6; !%s&GD8&l  
public final static int MERGE = 7; {Wp5Ane  
public final static int IMPROVED_MERGE = 8; $MB /j6#j  
public final static int HEAP = 9; huw|J<$  
wc.T;(  
public static void sort(int[] data) { H|i39XV  
sort(data, IMPROVED_QUICK); J_ S]jE{  
} ?,0 5!]  
private static String[] name={ An0Zg'o!G  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" OD\F*Ry~  
}; SByn u  
+X&b  
private static Sort[] impl=new Sort[]{ 3iC$ "9!p  
new InsertSort(), $X%'je  
new BubbleSort(), i`)h~V|G  
new SelectionSort(), ~i ImM|*0  
new ShellSort(), g8^YDrH  
new QuickSort(), ,Kw]V %xOb  
new ImprovedQuickSort(), B qA  
new MergeSort(), 2AK]x`GY  
new ImprovedMergeSort(), Gcz@z1a=n  
new HeapSort() 4OOH 3O  
}; tjIT4  
Yf=Puy}q  
public static String toString(int algorithm){ 3Sb'){.MT+  
return name[algorithm-1]; , e6}p  
} ]-b`uYb  
Q7vTTn\  
public static void sort(int[] data, int algorithm) { cXY;Tw45  
impl[algorithm-1].sort(data); cun&'JOH?U  
} /degBL+  
<B %s9Zy  
public static interface Sort { =Pu;wx9  
public void sort(int[] data); xOAA1#   
} ~$\9T.tre2  
;5(ptXX1W  
public static void swap(int[] data, int i, int j) { 8vL2<VT;  
int temp = data; /PuN+M  
data = data[j]; Sl RQi:  
data[j] = temp; cB ,l=/?  
} vm y?8E6+  
} 2GRdfX  
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