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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。 kFCjko  
插入排序: jGV+ ~a  
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package org.rut.util.algorithm.support; 2oL~N*^C  
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import org.rut.util.algorithm.SortUtil; y9<]F6TT  
/** <$m=@@qg  
* @author treeroot HI+87f_Q  
* @since 2006-2-2 c{7<z9U  
* @version 1.0 TF0DQP  
*/ P?QVT;]  
public class InsertSort implements SortUtil.Sort{ a+wc"RQ |  
,V$PV,G  
/* (non-Javadoc) G3 h&nH,>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #f *,mY|>  
*/ 0LQ|J(u  
public void sort(int[] data) { Ed&;d+NM  
int temp; W=Y?_Oz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -s ]  
} JQ9JWu%a  
} "l83O8 L  
} 2y_R05O0  
M{sn{  
} Ojea~Y]Sr  
|[%CFm}+?  
冒泡排序: Glz yFj  
MSef2|"P#  
package org.rut.util.algorithm.support; .Ioj]r  
UXU!sd  
import org.rut.util.algorithm.SortUtil; ;{@jj0h;  
FPg5!O%  
/** :Ng4? +@r  
* @author treeroot ;|nC;D]  
* @since 2006-2-2 [X9s\H  
* @version 1.0 drv"I[}{A  
*/ MXQ S6F#  
public class BubbleSort implements SortUtil.Sort{ 0iy-FV;J  
l8O12  
/* (non-Javadoc) ,2*^G;J1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L\O}q  
*/ +i %,+3#6  
public void sort(int[] data) { u<}PcI.  
int temp; ux8:   
for(int i=0;i for(int j=data.length-1;j>i;j--){ HTpoYxn(  
if(data[j] SortUtil.swap(data,j,j-1); ^;KL`  
}  (C1@f!Z  
} >pS @;t'  
}  vbol 70  
} `#v(MK{9+V  
EUVB>%P  
} d-cK`pSB  
="M7F0k  
选择排序: gy%/zbZx  
T(n<@Ac]V  
package org.rut.util.algorithm.support; x+mf QcSD&  
wF@mHv  
import org.rut.util.algorithm.SortUtil; .bwKG`F  
Hh|a(Zq,  
/** ?AL;m.X-@  
* @author treeroot p-KMELB  
* @since 2006-2-2 a.oZ}R7'Y  
* @version 1.0 t&GjW6]W  
*/ ch^tq",1>  
public class SelectionSort implements SortUtil.Sort { ;,z[|"y  
 xr }jw  
/* +N~?_5lv\s  
* (non-Javadoc) &HS6}  
* 3n\eCdV-b<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e3|@H'~k  
*/ VaLx-RX  
public void sort(int[] data) { 8Gw0;Uu8D  
int temp; kO1.27D  
for (int i = 0; i < data.length; i++) { 4sj:%% UE  
int lowIndex = i; ^CZ)!3qd1  
for (int j = data.length - 1; j > i; j--) { =f4v: j}'|  
if (data[j] < data[lowIndex]) { q;XO1Se  
lowIndex = j; z j[/~ I  
} kX\\t.nH  
} jl!rCOLt4  
SortUtil.swap(data,i,lowIndex); @D<KG  
} e-}b]\  
} "cK@Yo  
%Q)3*L  
} Q@7-UIV|q  
>9h@Dj[|!  
Shell排序: 8SG*7[T7  
 3,7SGt r  
package org.rut.util.algorithm.support; aN87^[  
K1vm [Ne  
import org.rut.util.algorithm.SortUtil; \P3[_kbf1  
AbWnDqv  
/** jK#[r[q{  
* @author treeroot ;bC163[  
* @since 2006-2-2 'CTvKW  
* @version 1.0 'dnTu@mUT  
*/ *1Q~/<W  
public class ShellSort implements SortUtil.Sort{ dHE\+{K%-  
LuLnmnmB  
/* (non-Javadoc) g?(h{r`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OZHQnvZ  
*/ NlBnV  
public void sort(int[] data) { 9c /&+j  
for(int i=data.length/2;i>2;i/=2){ \xQ10\u  
for(int j=0;j insertSort(data,j,i); 0K0[mC}ZwM  
} <> jut  
} ~|LlT^C  
insertSort(data,0,1); |_=o0l f  
} q- U/JC  
D"5uN0Z  
/** ?1r>t"e5  
* @param data "R"7'sJMI  
* @param j S\qYw(G  
* @param i HJ&|&tT  
*/ UR/l M,N;  
private void insertSort(int[] data, int start, int inc) { O Oa}+^-j  
int temp; U~,~GU=X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ypoJ4EZ(  
} J9tQ@3{f  
} Sdc yL%6!  
} AWp{n  
;NyX9&@  
} ;au-NY  
$;9zD11  
快速排序: |j[=uS  
=Ws-s f]  
package org.rut.util.algorithm.support; mP1EWh|  
}RGp)OFY&  
import org.rut.util.algorithm.SortUtil; &&N]u e@>  
y~&R(x~w  
/** uP'x{Pr)  
* @author treeroot *3S ./ C}  
* @since 2006-2-2 l.DC20bs  
* @version 1.0 7?@s.Sz|fV  
*/ I?) .D?o  
public class QuickSort implements SortUtil.Sort{ XQ+KI:g2  
.?gpI Zv  
/* (non-Javadoc) ' (JSU   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MjO.s+I  
*/ rtl|zCst  
public void sort(int[] data) { PMDx5-{A/t  
quickSort(data,0,data.length-1); ]F,mj-?4x  
} !'4HUB>+  
private void quickSort(int[] data,int i,int j){ X[ERlw1q4Q  
int pivotIndex=(i+j)/2; RhJ{#G~:%  
file://swap 6LGy0dWpG  
SortUtil.swap(data,pivotIndex,j); n4albG4  
@KM !g,f  
int k=partition(data,i-1,j,data[j]); 3NEbCILF  
SortUtil.swap(data,k,j); MEOVw[hO  
if((k-i)>1) quickSort(data,i,k-1); @O;gKFx  
if((j-k)>1) quickSort(data,k+1,j); T.1*32cX  
gFJ. p  
} =Q % F~  
/** *c\:ogd  
* @param data L*2YAIG  
* @param i cx]&ae*  
* @param j X8TwMt  
* @return 8 |2QJ  
*/ mL!)(Bb  
private int partition(int[] data, int l, int r,int pivot) { \r_-gn'1b  
do{ O-rHfIxY  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +doZnU,  
SortUtil.swap(data,l,r); 29]T:I1d[  
} H /E.R[\+x  
while(l SortUtil.swap(data,l,r); F`l r5  
return l; F,Ls1  
} n'<FH<x  
vT*z3  
} P4{8pO]B  
l]BIFZ~  
改进后的快速排序: ]!yuD/4A  
`"N56  
package org.rut.util.algorithm.support; 3JB?G>\!  
f'hrS}e  
import org.rut.util.algorithm.SortUtil; ;a]2hd"6  
{q9[0-LyJ  
/** beLT4~Z=  
* @author treeroot |1sl>X,  
* @since 2006-2-2 3"ALohlL  
* @version 1.0 !/+'O}@-E  
*/ $^ \8-k "  
public class ImprovedQuickSort implements SortUtil.Sort { mnK SO  
8IErLu}  
private static int MAX_STACK_SIZE=4096; b?6-lYE>L  
private static int THRESHOLD=10; _7j-y 9V  
/* (non-Javadoc) d!+8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [P5+}@t  
*/ o6JCy\Bx  
public void sort(int[] data) { IMaa#8,  
int[] stack=new int[MAX_STACK_SIZE]; 0w'%10"&U+  
XBd/,:q  
int top=-1; w8!S;~xKI  
int pivot; `|Aj3a3sND  
int pivotIndex,l,r; ))y`q@  
[O) Q\|k  
stack[++top]=0; 9M3XHj  
stack[++top]=data.length-1; F iZe4{(p  
-YF]k}|  
while(top>0){ ,>6s~'  
int j=stack[top--]; &xK ln1z'  
int i=stack[top--]; rJ2yi6TB\  
\'z&7;px  
pivotIndex=(i+j)/2; *v+xKy#M  
pivot=data[pivotIndex]; lTl-<E;  
tI2V)i!  
SortUtil.swap(data,pivotIndex,j); 7 &y'\  
D6cqON0a.  
file://partition 3lw KV  
l=i-1; (;RmfE'PX  
r=j; \-X Qo  
do{ 1SddZ5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); MeD}S@H  
SortUtil.swap(data,l,r); |"4+~z%/9!  
} R>BZQugZ~  
while(l SortUtil.swap(data,l,r); dso6ZRx  
SortUtil.swap(data,l,j); _wMc7`6F  
 T06BrX  
if((l-i)>THRESHOLD){ 3q{op9_T7  
stack[++top]=i; [)K?e!c8  
stack[++top]=l-1; El3Y1g3+3  
} \k?Fu=@  
if((j-l)>THRESHOLD){ 5F#Q1gP-  
stack[++top]=l+1; BCH{0w^D  
stack[++top]=j; }.j<kmd  
} b`?$;5  
oMM+af  
} ZCdlTdY   
file://new InsertSort().sort(data); i98>=y~  
insertSort(data); /oA=6N#j  
} gP&G63^  
/** $ {Y? jJ  
* @param data (XF"ckma  
*/ uBdS}U  
private void insertSort(int[] data) { ${(c `X  
int temp; l/(|rl#6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dj>ZHdTn  
} ]yc&ffe%  
} xqP DL9\  
} qnFi./  
6V[ce4a%  
} 7w}PYp1Z'~  
0A]+9@W;  
归并排序: <4l;I*:2&  
|f9fq~'1e  
package org.rut.util.algorithm.support; lCyBdY9n  
~"eQPTd  
import org.rut.util.algorithm.SortUtil; Zo=w8Hr  
y `)oD0)Fj  
/** }f/xMp-Y  
* @author treeroot #3fS_;G  
* @since 2006-2-2 0a1Vj56{)  
* @version 1.0 ; M)l7f  
*/ <B+xE?v4  
public class MergeSort implements SortUtil.Sort{ OI@;ffHSW  
3Ryae/Nk  
/* (non-Javadoc) K<BS%~,I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $w:7$:k  
*/ fga{ b7  
public void sort(int[] data) { pn5A6 #  
int[] temp=new int[data.length]; 28u3B2\$  
mergeSort(data,temp,0,data.length-1); P~6QRm  
} Cob<N'.  
5V"Fy&}:  
private void mergeSort(int[] data,int[] temp,int l,int r){ MQ~OG9.  
int mid=(l+r)/2; 1Tb'f^M$  
if(l==r) return ; XGs d"UW  
mergeSort(data,temp,l,mid); ZxvqLu  
mergeSort(data,temp,mid+1,r); [,@gSb|D?  
for(int i=l;i<=r;i++){ r~<I5MZY  
temp=data; e*nT+Rp  
} [ X7LV  
int i1=l; +{eZ@  
int i2=mid+1; mN!5JZ' 2  
for(int cur=l;cur<=r;cur++){ MfJs?N0  
if(i1==mid+1) @Czj] t`  
data[cur]=temp[i2++]; .aA 8'/  
else if(i2>r) 4>JDo,AWy  
data[cur]=temp[i1++]; D&)w =qIu  
else if(temp[i1] data[cur]=temp[i1++]; |i/Iv  
else |I0O|Zdv  
data[cur]=temp[i2++]; q?9x0L  
} U]8 @  
} Ao2m"ym  
49e~/YY  
} _0razNk  
o%~PWA*Qp  
改进后的归并排序: (toN? ?r  
@,=E[c 8  
package org.rut.util.algorithm.support; Q')0 T>F-  
UNoNsmP  
import org.rut.util.algorithm.SortUtil; #3+-vyZm  
P7X':  
/** H@j D %  
* @author treeroot =Wgz\uGJ  
* @since 2006-2-2 #iZ%CY\  
* @version 1.0 $<]G#&F   
*/ W5&;PkhQ6  
public class ImprovedMergeSort implements SortUtil.Sort { yjq~O~  
bOY<C%;C  
private static final int THRESHOLD = 10; hwon ^?  
i&%/]Nq  
/* Gtyy^tz[  
* (non-Javadoc) :(^, WOf  
* n)~9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f{[] m(X;  
*/ N1pw*<&  
public void sort(int[] data) { m4 :|  
int[] temp=new int[data.length];  GD]yP..  
mergeSort(data,temp,0,data.length-1); 1=9M@r~ ^  
} B\tP{}P8{  
H7I&Ky  
private void mergeSort(int[] data, int[] temp, int l, int r) { <c X\|dM  
int i, j, k; ;q3"XLV(T[  
int mid = (l + r) / 2; F5Xj}`}bq  
if (l == r) +V N&kCx)  
return; _a?(JzLw5  
if ((mid - l) >= THRESHOLD) |k3^ eeLk  
mergeSort(data, temp, l, mid); nWyn}+C-  
else NDmTxW#g  
insertSort(data, l, mid - l + 1); rEM#J"wF  
if ((r - mid) > THRESHOLD) FA+'E  
mergeSort(data, temp, mid + 1, r); Pd~{XM,yfW  
else 'JjW5  
insertSort(data, mid + 1, r - mid); BnB]]<gO"  
F/QRgXV  
for (i = l; i <= mid; i++) { ]W7e2:Hra  
temp = data; V1 H3}  
} @u.%z# h"1  
for (j = 1; j <= r - mid; j++) { y1FE +EX[  
temp[r - j + 1] = data[j + mid]; 8,l~e8&  
} y\xa<!:g  
int a = temp[l]; Y[8GoqE|  
int b = temp[r]; qi&;2Yv  
for (i = l, j = r, k = l; k <= r; k++) { BbV@ziL  
if (a < b) { {zri6P+s  
data[k] = temp[i++]; lV*dQwa?i  
a = temp; P`HDQ/^O  
} else { 6^'BhHP  
data[k] = temp[j--]; 4$wn8!x2|  
b = temp[j]; Jw b'5[R  
} >[D(<b(U&  
}  V/8"@C  
} *Bse3%-v  
}1sFddGVt  
/** '&OJ hLE  
* @param data rZK;=\Ot  
* @param l 4|]0%H~n6  
* @param i [|&V$  
*/ DC-tBbQkk  
private void insertSort(int[] data, int start, int len) { 'Pm.b}p<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); CBVL/pxy  
} #ox &=MY  
} RdirEH *H  
} GjfPba4>  
} 2# 1G)XI  
MKr)6PG,  
堆排序: 0[O."9  
b":3J)Y6.  
package org.rut.util.algorithm.support; nc.(bb),  
qpCNvhi  
import org.rut.util.algorithm.SortUtil; ]m(C}}  
CHojF+e  
/** W{v{sQg  
* @author treeroot NhgzU+)+  
* @since 2006-2-2 l0&Y",vy  
* @version 1.0 h5do?b v!  
*/ RM(MCle}  
public class HeapSort implements SortUtil.Sort{ U =G}@Y  
L  (#DVF  
/* (non-Javadoc) *>#mI/#}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) naHQeX;  
*/ ! /qQ:k-.  
public void sort(int[] data) { yG ,oSp|  
MaxHeap h=new MaxHeap(); dHUcu@,  
h.init(data); jMP!/t :w  
for(int i=0;i h.remove(); XP |qY1  
System.arraycopy(h.queue,1,data,0,data.length); yltzf #%  
} wyVQV8+&>  
&W|r P(  
private static class MaxHeap{ 2l YA% n  
;G=:>m~  
void init(int[] data){ 5{esL4k  
this.queue=new int[data.length+1]; 'cpO"d?{  
for(int i=0;i queue[++size]=data; ]5_6m;g  
fixUp(size); "+@>!U  
} e+? -#  
} ="<S1}.  
&|% F=/VU  
private int size=0; rRK^vfoJ`  
)dMXn2O  
private int[] queue; jb5nL`(j$  
TlA*~HG<Q  
public int get() { $h()% C7s  
return queue[1]; ,];4+&|8kW  
} [&B}{6wry  
^-|yF2>`  
public void remove() { |*5QFp  
SortUtil.swap(queue,1,size--); -y+u0,=p.  
fixDown(1); TX%W-J _  
} =64%eF  
file://fixdown JBCJVWUt  
private void fixDown(int k) { 49;2tl;F  
int j; )RFE< Qcj  
while ((j = k << 1) <= size) { -T  5$l  
if (j < size %26amp;%26amp; queue[j] j++; 9tt0_*UX  
if (queue[k]>queue[j]) file://不用交换 .AzGPcJY  
break; 5V($|3PI  
SortUtil.swap(queue,j,k); FV1!IE-}-  
k = j; [HV9KAoA  
} SjZ?keKZ  
} EXrOP]Kl  
private void fixUp(int k) { AVx 0aj  
while (k > 1) { yVP 1=pz_[  
int j = k >> 1; _s&sA2r<  
if (queue[j]>queue[k]) c[DC  
break; ju@5D h  
SortUtil.swap(queue,j,k); 2Y2J)5,  
k = j; GkutS.2G#  
} 2Y+8!4^L a  
} N)0I+>, ^  
yU"'h[^  
} pR VL}^Rk  
>UQ`@GdafR  
} @rh1W$  
%~ROV>&  
SortUtil: ST^@7f_  
%NI'PXpI  
package org.rut.util.algorithm; q%/ciPgE  
IIW6;jS  
import org.rut.util.algorithm.support.BubbleSort; lYz$~/sd  
import org.rut.util.algorithm.support.HeapSort; GsG9;6c+u  
import org.rut.util.algorithm.support.ImprovedMergeSort; :<`hsKy&  
import org.rut.util.algorithm.support.ImprovedQuickSort; OSvv\3=  
import org.rut.util.algorithm.support.InsertSort; #$qhxYyd  
import org.rut.util.algorithm.support.MergeSort; n<x NE %  
import org.rut.util.algorithm.support.QuickSort; ),K!| 7#h  
import org.rut.util.algorithm.support.SelectionSort; r|bvpZV  
import org.rut.util.algorithm.support.ShellSort; 4eOQP  
Ux2p qPb  
/** ` _+j+  
* @author treeroot jx=2^A/i2-  
* @since 2006-2-2 f"0{e9O]2  
* @version 1.0 -9 AI@^q  
*/ Tk'YpL#U  
public class SortUtil { \\qw"w9  
public final static int INSERT = 1; n{~W s^d  
public final static int BUBBLE = 2; 'WUevPmt  
public final static int SELECTION = 3; 7@.UkBOx  
public final static int SHELL = 4; A3UC=z<y  
public final static int QUICK = 5; ]0HlPP:2  
public final static int IMPROVED_QUICK = 6; !50Fue^JM  
public final static int MERGE = 7; 7[l "=  
public final static int IMPROVED_MERGE = 8; &k5 Z|d|  
public final static int HEAP = 9; t._W643~  
(wNL,<%~  
public static void sort(int[] data) { pvJsSX  
sort(data, IMPROVED_QUICK); B=:7N;BT  
} zl: 5_u=T  
private static String[] name={ X9f!F2x  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *Mt's[8  
}; /=x) 9J  
* Yr)>;^  
private static Sort[] impl=new Sort[]{ ,$,6%"'"  
new InsertSort(), (R*K)(Nw[  
new BubbleSort(), m CFScT  
new SelectionSort(), CL*i,9:NR  
new ShellSort(), C?bq7kD:H  
new QuickSort(), ^/wvHu[#  
new ImprovedQuickSort(), 1{oq8LB  
new MergeSort(), F*F U[ 5  
new ImprovedMergeSort(), /5@V $c8  
new HeapSort() :QnN7&j|(w  
}; ?~e 8:/@  
_|x b)_  
public static String toString(int algorithm){ ?qviJDD|f  
return name[algorithm-1]; `e t0i.  
} P9/5M4]tt  
/q4<ZS#  
public static void sort(int[] data, int algorithm) { ]7C=.'Y  
impl[algorithm-1].sort(data); ).TQYrs  
} ~+{OSx<S  
(u81p  
public static interface Sort { Tp.0@aC  
public void sort(int[] data); r00 fvZyK  
} k0{5)Su"xr  
*5k" v"NM(  
public static void swap(int[] data, int i, int j) { ZM/*cA!"  
int temp = data; 'aQ"&GX@  
data = data[j]; NhyVX%qt:  
data[j] = temp; <im BFw  
} yz}Agc4.I  
} F:.rb Ei  
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