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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。 a~^Srj!}x  
插入排序: F}rPY:  
kJ: 2;t=  
package org.rut.util.algorithm.support; ZAg;q#z j  
3On JWuVfZ  
import org.rut.util.algorithm.SortUtil; q:HoKJv4  
/** Ew^ @Aq  
* @author treeroot dNV v4{S  
* @since 2006-2-2 dTD5(}+J  
* @version 1.0 qq+MBW*  
*/ $-@$i`Kf/  
public class InsertSort implements SortUtil.Sort{ CYB=Uq,  
K:qOoY  
/* (non-Javadoc) Ha ZFxh-(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bEr.nF  
*/ %f[Ep 3D  
public void sort(int[] data) { ?:|YGLaB  
int temp; U?U(;nSR\A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j/<??v4F4  
} uJ'9R`E ]1  
} A1,4kqmE  
} B$`lY DqaG  
gf$HuCh|  
} -%uy63LbHF  
5&4F,v[zp  
冒泡排序: yCM{M  
4&}\BU*  
package org.rut.util.algorithm.support; dB|Te"6  
u2`xC4>c  
import org.rut.util.algorithm.SortUtil; 8g5V,3_6  
gB CC  
/** {>.>7{7  
* @author treeroot m(3);)d  
* @since 2006-2-2 4IGxI7~27#  
* @version 1.0 T=? bdIl  
*/ .{N\<01  
public class BubbleSort implements SortUtil.Sort{ )Ul&1UYA  
ye r> x  
/* (non-Javadoc) .g-3e"@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uU+s!C9r  
*/ O=O(3Pf>  
public void sort(int[] data) { -"Gl 4)  
int temp; L/k40cEI^z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ WX*cICb5  
if(data[j] SortUtil.swap(data,j,j-1); mvf _@2^  
} hrlCKL&  
} f0F#Yi{fw  
} VA]ZR+m  
} @bQ!zCI  
k`IrZHMw  
} E2yz=7sv5  
G(i\'#5+  
选择排序: &8Wlps`  
]b\WaS8I  
package org.rut.util.algorithm.support; Rk[8Bd?  
iH _"W+dq  
import org.rut.util.algorithm.SortUtil; *7vue"I*Z  
^X;JT=r  
/** anZIB  
* @author treeroot rAatJc"0  
* @since 2006-2-2 S 1>Z6  
* @version 1.0 chwh0J;  
*/ vadM1c*z  
public class SelectionSort implements SortUtil.Sort { &kq7gCd  
j[T%'%  
/* er\:U0fr#@  
* (non-Javadoc) V9$-twhu  
* :A$wX$H01  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M7H~;S\3IM  
*/ xucIjPi]  
public void sort(int[] data) { .%hQJ{vf-^  
int temp; & 3I7]Wm  
for (int i = 0; i < data.length; i++) { s{%fi*  
int lowIndex = i; 6(5c7R#  
for (int j = data.length - 1; j > i; j--) { }` @?X"r  
if (data[j] < data[lowIndex]) { ks^|>  
lowIndex = j; 0- Yeu5A  
} $pBr &,  
} ^k9rDn/AW  
SortUtil.swap(data,i,lowIndex); K-Y* T}?  
} s_` V*`n&  
} ^*zW"s  
0JOju$Bl,  
} _9qEZV  
$:HLRl{2E  
Shell排序: W.GN0(uG  
*%f3rvt7@)  
package org.rut.util.algorithm.support; 'v`~(9'Rcj  
G32_FQ$ b  
import org.rut.util.algorithm.SortUtil; k%a?SU<f  
x_pMG!2  
/** ;op'V6iG  
* @author treeroot qSCTFJ0  
* @since 2006-2-2 K/A ? ]y  
* @version 1.0 *kV#)j  
*/ v @_?iC"`  
public class ShellSort implements SortUtil.Sort{ "$%{}{#W0  
YmA) @1@U  
/* (non-Javadoc) zXDd,ltm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [@s=J)H  
*/ )da:&F -  
public void sort(int[] data) { t)`+d=P   
for(int i=data.length/2;i>2;i/=2){ t"#lnG!G  
for(int j=0;j insertSort(data,j,i); Fj48quW1\P  
} T7X!#j" \  
} EXH!glR[$  
insertSort(data,0,1); 2tlO"c:_/  
} 'NRN_c9  
G:){^Z?  
/** -<12~HKK::  
* @param data f>b!-|  
* @param j 5]Z]j[8Y  
* @param i 7a27^b  
*/ >cSi/a,L  
private void insertSort(int[] data, int start, int inc) { (h%|;9tF  
int temp; :0|Hcg  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); iu+zw[f  
} jm~mhAE#  
} S@;&U1@h  
} GZ}*r{  
Y# .6d  
} G-ZrM  
[cY?!Qd 0  
快速排序: T\.7f~3  
" Tw0a!  
package org.rut.util.algorithm.support; d"Ml^rAn  
)62q|c9F  
import org.rut.util.algorithm.SortUtil; ``/y=k/au  
?cA8P.?^A  
/** aslNlH6  
* @author treeroot _g^E%@'W  
* @since 2006-2-2 Rs^jk)Z:)  
* @version 1.0 x*k65WO\  
*/ Pi^ECSzQu[  
public class QuickSort implements SortUtil.Sort{ 8dYk3 sk  
FL5ibg  
/* (non-Javadoc) D;K&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &P{o{  
*/ I}I}K~se*  
public void sort(int[] data) { | 3hT{  
quickSort(data,0,data.length-1); $a)J CErN  
} kwDjK"  
private void quickSort(int[] data,int i,int j){ 1 NB2y[  
int pivotIndex=(i+j)/2; :$+D 2*(  
file://swap U`HXsq p}  
SortUtil.swap(data,pivotIndex,j); /[p?_EX@  
wGZ>iLe:  
int k=partition(data,i-1,j,data[j]); m.;{ 8AM%f  
SortUtil.swap(data,k,j); &! 5CwEIF  
if((k-i)>1) quickSort(data,i,k-1);  rytGr9S  
if((j-k)>1) quickSort(data,k+1,j); 7/[TE  
MLEIx()  
} JuKk"tr~RB  
/** zWP.1 aA&  
* @param data 9 kTD}" %2  
* @param i o9DYr[  
* @param j ~pDRF(  
* @return OcyiL)tv5  
*/ cWX"e6  
private int partition(int[] data, int l, int r,int pivot) { Xq} n^W  
do{ Qq @_Z=mt  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5(mCBH  
SortUtil.swap(data,l,r); .`i'gPLkn2  
} ,k`YDy|#e  
while(l SortUtil.swap(data,l,r); m? ]zomP  
return l; (xjoRbU*  
} Fv5x6a  
)M&I)In'  
} *B)Jv9  
v^FV t  
改进后的快速排序: O?+tY y?  
mgJ]@s}9  
package org.rut.util.algorithm.support; V NJDl  
UeutFNp  
import org.rut.util.algorithm.SortUtil; e3oYy#QNk  
*FI5z[8,  
/** /ynKKJx<Y  
* @author treeroot /\oyPD`((  
* @since 2006-2-2 ,E n(gm  
* @version 1.0 ZQgxrZx3  
*/ ]x5(bnW x  
public class ImprovedQuickSort implements SortUtil.Sort { GgZEg ?@  
{+9^PC_hm;  
private static int MAX_STACK_SIZE=4096; cQUH%7m  
private static int THRESHOLD=10; QiQ2XW\E  
/* (non-Javadoc) C.Wms}XA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i`ZHjW~`  
*/ A>ug'.  
public void sort(int[] data) { XSL t;zL:  
int[] stack=new int[MAX_STACK_SIZE]; +S:u[x  
xIq"[?m  
int top=-1; &+|jJ{93z  
int pivot; Q8M:7#ySji  
int pivotIndex,l,r; w|K(>5nz  
%nG~u,_2f  
stack[++top]=0; 3.GdKP.%  
stack[++top]=data.length-1; `CTkx?e[  
[1Qk cR  
while(top>0){ "`8H:y  
int j=stack[top--]; p: Q%Lg_I  
int i=stack[top--]; TV[6+i*#  
&)fhlp5  
pivotIndex=(i+j)/2; Sl+jduc  
pivot=data[pivotIndex]; ;N> {1  
/S2p``E+  
SortUtil.swap(data,pivotIndex,j); ~Q{[fy=  
k=d%.kg  
file://partition 6@ (k8<3  
l=i-1; nEZ-h7lzl(  
r=j; {YxSH %  
do{ Rd@n?qB  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); s$+: F$Y0  
SortUtil.swap(data,l,r); NL>[8#  
} yC&b-y  
while(l SortUtil.swap(data,l,r); US*<I2ZLh  
SortUtil.swap(data,l,j); It!.*wp  
=km-` }I,  
if((l-i)>THRESHOLD){ 1z $}*`  
stack[++top]=i; u\Erta`  
stack[++top]=l-1; 2+r )VF:  
} 0W<nE[U  
if((j-l)>THRESHOLD){ hD9' `SQ  
stack[++top]=l+1; X&;]  
stack[++top]=j; nw]e_sm  
} ^|:{,d#Y  
04T*\G^:=  
} Ej{eq^n  
file://new InsertSort().sort(data); %+j]vP  
insertSort(data); s].'@_~s  
} ,~=z_G`R  
/** 9< 0$mE^:  
* @param data V]CK'   
*/ VES4x%r=  
private void insertSort(int[] data) { :b3l J-dB  
int temp; IZ(CRKCGBl  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 07G*M ]  
} |WwFE|<  
} Ws}kb@5  
} f >, Qhl  
OrKT~JQVC&  
} 6jy n,GU  
g`f6gxc  
归并排序: e>i8=U` ;  
{1-CfQ0 8  
package org.rut.util.algorithm.support; =QxE-)v  
+h\W~muR  
import org.rut.util.algorithm.SortUtil;  kAe-d  
I!i#=  
/** `sp'Cl!  
* @author treeroot ,h)T(  
* @since 2006-2-2 jP7+s.j>  
* @version 1.0 %imBGh  
*/ S|5lx7  
public class MergeSort implements SortUtil.Sort{ (k2J{6]  
qKb- aP-  
/* (non-Javadoc) !kk %;XSZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gm%bxr@X~  
*/ 3lrZ-k+S{  
public void sort(int[] data) { >|o9ggL`J5  
int[] temp=new int[data.length]; & b^*N5<Z  
mergeSort(data,temp,0,data.length-1); A%2M]];%X  
} 5Z>pa`_$2  
=D"63fP1  
private void mergeSort(int[] data,int[] temp,int l,int r){ )V =K#MCK  
int mid=(l+r)/2; *U^\Mwp  
if(l==r) return ; "GC]E8&>H  
mergeSort(data,temp,l,mid); u g$\&rM>  
mergeSort(data,temp,mid+1,r); Z=5}17kA  
for(int i=l;i<=r;i++){ ,I:m*.q  
temp=data; sZP3xh[B  
} hZ /  
int i1=l; GyXs{*  
int i2=mid+1; Tk|;5^#H  
for(int cur=l;cur<=r;cur++){ .)pRB7O3  
if(i1==mid+1) -D^y)  
data[cur]=temp[i2++]; EvardUB)  
else if(i2>r) r+.4|u  
data[cur]=temp[i1++]; X]^E:'E!  
else if(temp[i1] data[cur]=temp[i1++]; >b"z`{tE  
else {O,M}0Eg  
data[cur]=temp[i2++]; VNEZBy"F  
} Ru\Lr=9  
} 3[O =2  
nm|m1Z+U  
} 3Os3=Ix  
NCpn^m)Q}  
改进后的归并排序: 4a50w:Jy]  
Mh/>qyS *2  
package org.rut.util.algorithm.support; "Ohpb!J9  
x]01j4HJ  
import org.rut.util.algorithm.SortUtil; ~ z&A  
E#F9<=mA)  
/** H5MAN,`  
* @author treeroot # yRA. ;  
* @since 2006-2-2 ?)QBJ9F  
* @version 1.0 W[Ew6)1T  
*/ yt#;3  
public class ImprovedMergeSort implements SortUtil.Sort { sTstc+w  
V +<AG*[  
private static final int THRESHOLD = 10; nXaX=  
(<~ R[sT|  
/* }Z$G=;3#  
* (non-Javadoc) v2X0Px_  
* F3|pS:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vwg|?sG_  
*/ `} Zbfe~  
public void sort(int[] data) { 1,!\7@<CT  
int[] temp=new int[data.length]; 6f9<&dCK  
mergeSort(data,temp,0,data.length-1); Y52xrIvl\  
} @X><lz  
4bjp*1*]  
private void mergeSort(int[] data, int[] temp, int l, int r) { [?6D1b[  
int i, j, k; yzzre>F  
int mid = (l + r) / 2; +dpj?  
if (l == r) ^dKaa  
return; g<tTZD\g  
if ((mid - l) >= THRESHOLD) |}.B!vg(4  
mergeSort(data, temp, l, mid); *H<g9<Dn  
else QgM_SY|Rj  
insertSort(data, l, mid - l + 1); ~g6[ [  
if ((r - mid) > THRESHOLD) c'TLD!^hB  
mergeSort(data, temp, mid + 1, r); U$J_:~  
else Im1qWe  
insertSort(data, mid + 1, r - mid); L*oL KigT  
I{ZPv"9j^  
for (i = l; i <= mid; i++) { Zd/~ *ZA  
temp = data; &Zy=vk*  
} l0 :xQV`  
for (j = 1; j <= r - mid; j++) { 2j BE+k"M  
temp[r - j + 1] = data[j + mid]; q x }fn/:  
} 0c6AQP"=V  
int a = temp[l]; -t#a*?"$w  
int b = temp[r]; 4J|t}  
for (i = l, j = r, k = l; k <= r; k++) { \I{A33i2w  
if (a < b) { rX d2[pp  
data[k] = temp[i++]; Y]0y -H  
a = temp; ^G<M+RF2J  
} else { m:<3d]L  
data[k] = temp[j--]; =zGz|YI*?  
b = temp[j]; Rk0 rHC6[  
} Y[]t_o)  
} T0)y5  
} ? NK} q\$  
fT~<C {  
/** )F2tV ]k\  
* @param data `3s-\>  
* @param l l:/V%{sx  
* @param i )%c)-c  
*/ =qQQ^`^F'~  
private void insertSort(int[] data, int start, int len) { KA2B3\  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )yAPYC  
} zX Pj7K*  
} w' >v@`y  
} 5E(P,!-.  
} WX"M_=lc-@  
nQVBHL>  
堆排序: &y+*3,!n8  
yKhzymS}T  
package org.rut.util.algorithm.support; . M $D  
a{.n(M  
import org.rut.util.algorithm.SortUtil; pD/S\E0@t  
H<?yG->  
/** 55KL^+-~  
* @author treeroot haK5Oe/cE  
* @since 2006-2-2 IsL/p3|  
* @version 1.0 :|Ty 0>k  
*/ \./2Qc,  
public class HeapSort implements SortUtil.Sort{ E #]%e^  
X;RI7{fW%X  
/* (non-Javadoc) m <ruFxY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :HQ/vVw'"9  
*/ |{"7/~*[  
public void sort(int[] data) { !A0bbJ  
MaxHeap h=new MaxHeap(); rnaDo\5  
h.init(data); !g:UM R  
for(int i=0;i h.remove(); 7!)%%K.z6  
System.arraycopy(h.queue,1,data,0,data.length); :M`BVZ1t  
} "VCr^'  
Ry~LhU:  
private static class MaxHeap{ 7QFEQ}  
,FO|'l  
void init(int[] data){ "G(/MT^C  
this.queue=new int[data.length+1]; =LzW#s=O  
for(int i=0;i queue[++size]=data; 06;{2&ju<  
fixUp(size); 31Du@h8YX  
} ajr8tp'  
} I{bi3y0  
\Y p oJ!-  
private int size=0; r"{1H  
5E=Odep`  
private int[] queue; mg]dKp  
Ca|;8ggf  
public int get() { "TI? qoz  
return queue[1]; 2uEu,YC  
} \)WjkhG<w#  
v$Z1Lh  
public void remove() { cxdM!L; `  
SortUtil.swap(queue,1,size--); (5 hu W7v  
fixDown(1); XPKcF I=  
} ( PlNaasV  
file://fixdown `6su_8Hno  
private void fixDown(int k) { sJ=B:3jS0  
int j; {D< ?.'  
while ((j = k << 1) <= size) { wl9icrR>  
if (j < size %26amp;%26amp; queue[j] j++; M$9h)3(B  
if (queue[k]>queue[j]) file://不用交换 y0]O 6.{  
break; sqRuqUj+  
SortUtil.swap(queue,j,k); G= e[TR)i  
k = j; :8 :>CHa  
} Nx'j+>bz>y  
} /.bwwj_;  
private void fixUp(int k) { L4%LE/t|e  
while (k > 1) { Tr)[q>  
int j = k >> 1; RqR  X  
if (queue[j]>queue[k]) {wySH[V  
break; cyyFIJj]  
SortUtil.swap(queue,j,k); [E1I?hfJ  
k = j; g^FH[(P[G  
} 2t<CAKBB  
} )1le-SC  
l"CONzm!  
} |Sm/Uq(c  
8qveKS]vZ  
} zT8K})#  
]vMft?  
SortUtil: S0cO00_ob  
hrK^oa_[W  
package org.rut.util.algorithm; `^ok5w"oi  
aL}_j#m{  
import org.rut.util.algorithm.support.BubbleSort; v3Kqs:"\  
import org.rut.util.algorithm.support.HeapSort; AsOI`@FV  
import org.rut.util.algorithm.support.ImprovedMergeSort; ~7g6o^A>  
import org.rut.util.algorithm.support.ImprovedQuickSort; Sr IynO  
import org.rut.util.algorithm.support.InsertSort; F44")fY  
import org.rut.util.algorithm.support.MergeSort; #q%/~-Uk  
import org.rut.util.algorithm.support.QuickSort; Q>$v~v?9  
import org.rut.util.algorithm.support.SelectionSort; b._pG(o1  
import org.rut.util.algorithm.support.ShellSort; e6Y0G,K  
]h6<o*  
/** ?fG Y,<c  
* @author treeroot c9V'Zd#  
* @since 2006-2-2 {1[8,Ho  
* @version 1.0 %O k.XBS)  
*/ vHmn)d1pl  
public class SortUtil { b.(^CYYQ  
public final static int INSERT = 1; dL>ZL1.$  
public final static int BUBBLE = 2; \Uiw: ,  
public final static int SELECTION = 3; kmwFw>#  
public final static int SHELL = 4; ~Q5HM  
public final static int QUICK = 5; Wp $\>  
public final static int IMPROVED_QUICK = 6; *&s_u)b  
public final static int MERGE = 7; qW*)]s)z  
public final static int IMPROVED_MERGE = 8; !WN r09`  
public final static int HEAP = 9; }tN"C 3)@  
Flsf5 Tr0  
public static void sort(int[] data) { HXX"B,N  
sort(data, IMPROVED_QUICK); TD<.:ul]  
} 3 }XS| Y  
private static String[] name={ 0:nyOx(;  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $|KbjpQ  
}; 38 F8(QU{  
C'Q} Z_  
private static Sort[] impl=new Sort[]{ NR" Xn7G  
new InsertSort(), >U z3F7nHi  
new BubbleSort(), P:G^@B3^  
new SelectionSort(), o/&Q^^Xj^~  
new ShellSort(), G"]'`2.m  
new QuickSort(), 'a}pWkLB  
new ImprovedQuickSort(), U<$|ET'  
new MergeSort(), mSs%gL]g  
new ImprovedMergeSort(), ^+88z>  
new HeapSort() $P$OWp?b  
}; B4%W,F:@  
\RJ428sxn  
public static String toString(int algorithm){ *5^h>Vk/  
return name[algorithm-1]; :0/I2:  
} ~~&M&Fe  
k 2~j:&p  
public static void sort(int[] data, int algorithm) { -O\`G<s%  
impl[algorithm-1].sort(data); c(:GsoO  
} d4/ZOj+%  
#-{4F?DA]y  
public static interface Sort { \7RP6o  
public void sort(int[] data); 'Q# KjY  
} ].eGsh2  
V<b"jCXI  
public static void swap(int[] data, int i, int j) { >5\rU[H>  
int temp = data; =Z2sQQVS  
data = data[j]; tq{ aa  
data[j] = temp; rc"yEI-``"  
} qSON3Iid  
} z' @F@k6  
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