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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。 }pdn-#  
插入排序: F&%@p&  
%O B:lAeJ  
package org.rut.util.algorithm.support; 0_q8t!<xJw  
Y#S<:,/sb?  
import org.rut.util.algorithm.SortUtil; X0Zqx1  
/** ~7+7{9g  
* @author treeroot {^=T&aCYdS  
* @since 2006-2-2 Atc9[<~WG  
* @version 1.0 )' +" y~  
*/ GK .^Gd  
public class InsertSort implements SortUtil.Sort{ 0uV3J  
EudX^L5U<d  
/* (non-Javadoc) \(2w/~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  a?S5 =  
*/ {L~j;p_G&  
public void sort(int[] data) { S "'0l S   
int temp; mivb}cKM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k>E^FB=  
} 7'Z-VO  
} .Ds d Q4Y  
} ]xC#XYE:dy  
3.+TM]RYN  
} g%Bh-O9\  
( m/uj z  
冒泡排序: M2H +1ic  
"@^Pb$BLY  
package org.rut.util.algorithm.support; DmU,}]#:  
0t*e#,y  
import org.rut.util.algorithm.SortUtil; X)oxNxZ[A  
<}75Xo  
/** 2[~|#0x  
* @author treeroot oC ?UGY~xL  
* @since 2006-2-2 pHQrjEF*  
* @version 1.0 fwQVxJe  
*/ 6&| hpp#[  
public class BubbleSort implements SortUtil.Sort{ >[}lC7 z,  
}Q $}LR@  
/* (non-Javadoc) 3LGX ^J<f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yPY}b_W  
*/ 6$CwH!42F  
public void sort(int[] data) { <*JFY%y "  
int temp; e}dGK=`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ aeZ$Wu>]W  
if(data[j] SortUtil.swap(data,j,j-1); "DaE(S&  
} M~%P1@%  
} L4O.=*P1  
} aVB/Co M9  
} 0N;~(Vt2  
q QcQnd2K  
} }NjZfBQW`  
w*?SGW  
选择排序: U#V&=~-  
-pmb-#`M  
package org.rut.util.algorithm.support; rn^cajO^  
b?{MXJ|  
import org.rut.util.algorithm.SortUtil; X)e#=w!fi3  
P~ : N  
/** KH$|wv  
* @author treeroot E5aRTDLq  
* @since 2006-2-2 (}g4}A@x  
* @version 1.0 = N&5]Z  
*/ LBxmozT  
public class SelectionSort implements SortUtil.Sort { 7|5X> yt  
{Qi J-[q  
/* u6nO\.TTtY  
* (non-Javadoc) xKR\w!+Z'  
* N5[^W`Qf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <Y]e  
*/ zmU@ k  
public void sort(int[] data) { 1 |  
int temp; li hIPMU  
for (int i = 0; i < data.length; i++) { Nq9\2p  
int lowIndex = i; /#WvC;B  
for (int j = data.length - 1; j > i; j--) { T;G<62`.h  
if (data[j] < data[lowIndex]) { ZDG~tCh=@  
lowIndex = j; y\omJx=,  
} P_4E<"eK  
} }* \*<d 3  
SortUtil.swap(data,i,lowIndex); 7u{V1_ n1  
} y8_$YA/g  
} @U3:9~Q  
+Xp1=2Mq  
} zauDwV=  
It7R}0Smg  
Shell排序: 6Df*wi!jI  
FDFwx|  
package org.rut.util.algorithm.support; TjDtNE  
]5K+W  
import org.rut.util.algorithm.SortUtil; &wAVO_s  
Esu {c9,  
/** 8>@JW]  
* @author treeroot =z;]FauR!  
* @since 2006-2-2 N]eBmv$|  
* @version 1.0 ;yajt\a  
*/ W]oa7VAq  
public class ShellSort implements SortUtil.Sort{ 06O_!"GD}  
_p>F43%p  
/* (non-Javadoc) 3dSb!q0&N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,{mv6?_  
*/ `m#-J;la  
public void sort(int[] data) { @I}VD\pF  
for(int i=data.length/2;i>2;i/=2){ ]J[d8S5  
for(int j=0;j insertSort(data,j,i); obE8iG@H  
} Cdy,8*   
} }toe'6  
insertSort(data,0,1); 7O'.KoMw  
} HdgNy\  
4(s HUWT  
/** ]=VRct "  
* @param data ;p2b^q'  
* @param j 7UY4* j|[C  
* @param i &e6UEG  
*/ ;@T0wd_i|  
private void insertSort(int[] data, int start, int inc) { iMt3h8  
int temp; [zBi*%5O  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2,dWD<h  
} 5VP0Xa ~  
} S :8  
} gs;^SRE I  
(M"rpG>L  
} l_/(J)|a  
t[J=8rhER  
快速排序: Vi:^bv  
(w#t V*  
package org.rut.util.algorithm.support; /W)A[jR  
Y*$>d/E  
import org.rut.util.algorithm.SortUtil; CxeW5qc  
D/f 4kkd  
/** Lj(cCtb)  
* @author treeroot }rI:pp^KS  
* @since 2006-2-2 3r, ~-6  
* @version 1.0 &n )MGg1%  
*/ | bz%SB  
public class QuickSort implements SortUtil.Sort{ i?Pnyi  
IC&P-X_aP  
/* (non-Javadoc) ^L5-2;s<U'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w^ut,`yW R  
*/ e ~'lWJD  
public void sort(int[] data) { J6n>{iE  
quickSort(data,0,data.length-1); ~<f[7dBv  
} gr*CN<  
private void quickSort(int[] data,int i,int j){ VJqk0w+  
int pivotIndex=(i+j)/2; =K18|Q0m  
file://swap GM0Q@`d  
SortUtil.swap(data,pivotIndex,j); !*}UP|8  
1*9.K'  
int k=partition(data,i-1,j,data[j]); qEr?4h  
SortUtil.swap(data,k,j); s{Y4wvQyB  
if((k-i)>1) quickSort(data,i,k-1); H #_Zv]  
if((j-k)>1) quickSort(data,k+1,j); !Fp %2gt|  
,< x/  
} 0o=HOCL\  
/** )rK2%\Z  
* @param data lb. Q^TghU  
* @param i x{SlJ%V  
* @param j [&n[p?  
* @return X+aQ 7^"s  
*/ m+hI3@j  
private int partition(int[] data, int l, int r,int pivot) { :.,9}\LK  
do{ 1j$\ 48Z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Dz: +. @k  
SortUtil.swap(data,l,r); Sp80xV_B  
} Zk%@GOu\  
while(l SortUtil.swap(data,l,r); rk W7;!  
return l; :J`@@H  
} k0e}`#t  
J+`aj8_B  
} g0tnt)]  
&/? Ct!_  
改进后的快速排序: 2+gbMd4n  
+7 H)s  
package org.rut.util.algorithm.support; m!/TJhiQ  
D=-}&w_T"  
import org.rut.util.algorithm.SortUtil; [i`  
V.P<>~W  
/** =0=#M(w  
* @author treeroot :+,;5  
* @since 2006-2-2 "l56?@-x  
* @version 1.0 '`P%;/z  
*/ L/"};VI  
public class ImprovedQuickSort implements SortUtil.Sort { KGy 3#r;Q  
[s>3xWZ+a  
private static int MAX_STACK_SIZE=4096; il5C9ql$  
private static int THRESHOLD=10; ]nhh|q9r{  
/* (non-Javadoc) &u.{]Yjx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qNQ54#  
*/ "tz6O0D  
public void sort(int[] data) {  VGV-t  
int[] stack=new int[MAX_STACK_SIZE]; q H}8TC  
c* {6T}VZr  
int top=-1; D~6[C:m  
int pivot; m^D'p  
int pivotIndex,l,r; z qeQ  
86r"hy~  
stack[++top]=0; Z+El(f x  
stack[++top]=data.length-1; UX)GA[WI  
jSY[Y:6md  
while(top>0){ Ay16/7h@hi  
int j=stack[top--]; P}@AH02  
int i=stack[top--]; fu "cX;  
,9P-<P  
pivotIndex=(i+j)/2; 1B~O!']N<  
pivot=data[pivotIndex]; m-AF&( ;K  
W{}$c`,R  
SortUtil.swap(data,pivotIndex,j); DKIH{:L7  
N[I@}j  
file://partition v~nKO?{   
l=i-1; QL/KY G  
r=j; 6 8tyWd}  
do{ z#tIa  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4\;zz8 5E  
SortUtil.swap(data,l,r); ;kgP:n  
} \OwF!~&  
while(l SortUtil.swap(data,l,r); 54_}9_g  
SortUtil.swap(data,l,j); &6x(%o|  
C%o|}iv"  
if((l-i)>THRESHOLD){ LZykc c9g  
stack[++top]=i; /Y0~BQC7!  
stack[++top]=l-1; h* S"]ye5  
} }t)+eSUA  
if((j-l)>THRESHOLD){ Vq'7gJj'  
stack[++top]=l+1; \o>-L\`O  
stack[++top]=j; AFAg3/  
} 5|H;%T 3_  
Vebv!  
} i KSRr#/  
file://new InsertSort().sort(data); 9Dx~! (  
insertSort(data); )4g_S?l=  
} t#NPbLZ  
/** ?qjdmB|w  
* @param data A({czHLhN5  
*/ q[$>\Nfg>B  
private void insertSort(int[] data) { Yk Ku4f  
int temp; N^;lp<{6?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gT)(RS`_)  
} uKJ:)oyaCP  
} Ik:G5m<ta  
} R$:-~<O  
G@7^M}  
} DsdM:u*s  
EavBUX$O  
归并排序: l#0zHBc  
u3h(EAH>  
package org.rut.util.algorithm.support; Igo`\JY  
(qA F2&  
import org.rut.util.algorithm.SortUtil; |O8e;v72g^  
ufL,K q4  
/** KMhrw s{&B  
* @author treeroot  Q6 *n'6  
* @since 2006-2-2 | R,dsBd  
* @version 1.0 ?'V78N sA  
*/ 4phCn5  
public class MergeSort implements SortUtil.Sort{ lU1SN/'zx  
sUF$eVAT  
/* (non-Javadoc) `gl?y;xC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ijh RSrCv  
*/ 2f(`HSC'  
public void sort(int[] data) { :V9Q<B^  
int[] temp=new int[data.length]; i@/%E~W  
mergeSort(data,temp,0,data.length-1); TXB!Y!RG#  
} Trirb'qO  
ev&l=(hY  
private void mergeSort(int[] data,int[] temp,int l,int r){ gc4o |x  
int mid=(l+r)/2; $ DN.  
if(l==r) return ; 'M%iS4b{IM  
mergeSort(data,temp,l,mid); lg|6~=aQ  
mergeSort(data,temp,mid+1,r); dO D(<  
for(int i=l;i<=r;i++){ xbiprhdv  
temp=data; LsR<r1KDJ  
} Gr({30"8  
int i1=l; Kj0)/Fjl+  
int i2=mid+1; 3n2^;b/]  
for(int cur=l;cur<=r;cur++){ =o@}~G&HA  
if(i1==mid+1) 8mr fs%_  
data[cur]=temp[i2++]; L' y0$  
else if(i2>r) <@7j37,R7V  
data[cur]=temp[i1++]; 8 8u[s@  
else if(temp[i1] data[cur]=temp[i1++]; 6UIS4 _   
else $Y/z+ea  
data[cur]=temp[i2++]; (F'~K,0  
} $ (&uaDYv  
} ~Dg:siw  
@Hj]yb5  
} xEG:KSH  
Xp;'Wa"@  
改进后的归并排序: 0Cc3NNdz  
ZZi 9<g1  
package org.rut.util.algorithm.support; hbXmIst  
qRT5|\l  
import org.rut.util.algorithm.SortUtil; 41R~.?  
Vb 36R _u  
/** Xk:x=4u&  
* @author treeroot w[2E:Nj  
* @since 2006-2-2 P'$2%P$8:~  
* @version 1.0 $zz4A~   
*/ Jn(|.eT|  
public class ImprovedMergeSort implements SortUtil.Sort { `~axOp9N  
E:}s 6l  
private static final int THRESHOLD = 10; u}'m7|)8  
xfUV'=~(  
/* ,9OER!$y  
* (non-Javadoc) axG%@5  
* ml~ )7J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _576Qa'rm  
*/ 6/a%%1c1  
public void sort(int[] data) { }lk9|U#6*`  
int[] temp=new int[data.length]; '<"%>-^Gn  
mergeSort(data,temp,0,data.length-1); $y)tcVc  
} `[=/f=Q}  
!ggHLZRlz  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7x*L 1>[`'  
int i, j, k; lfoPFJ Z  
int mid = (l + r) / 2; @&h_+|:-  
if (l == r) %*L8W*V  
return; r*7J#M /  
if ((mid - l) >= THRESHOLD) .j!:Hp(z}  
mergeSort(data, temp, l, mid); AfW:'>2  
else X/!Y mV !  
insertSort(data, l, mid - l + 1); ZA4sEVHW  
if ((r - mid) > THRESHOLD) &WbHM)_n  
mergeSort(data, temp, mid + 1, r); ZB}zT9JaE  
else iA2TvP#  
insertSort(data, mid + 1, r - mid); C-2#-{<  
\a:-xwUu<  
for (i = l; i <= mid; i++) { :2L-Nf  
temp = data; \n0Gr\:  
} "jq F  
for (j = 1; j <= r - mid; j++) { o`jVd,aj  
temp[r - j + 1] = data[j + mid]; M4XU*piz  
} gA+@p'XnR  
int a = temp[l]; pr"q-S>E  
int b = temp[r]; b<g9L4s  
for (i = l, j = r, k = l; k <= r; k++) { ;;17 #T2  
if (a < b) { Nrp1`qY  
data[k] = temp[i++]; X{5(i3?S  
a = temp; 9&4z4@on  
} else { p6{8t}  
data[k] = temp[j--]; 0bIhP,4&  
b = temp[j]; ~<_P jV  
} j|WN!!7  
} k5Df9 7\s  
} gDsb~>rb|  
]\%u9,b%!  
/** A3e83g~L  
* @param data \N]2V(v  
* @param l n ^C"v6X  
* @param i lGN{1djT  
*/ GA)t!Xg^  
private void insertSort(int[] data, int start, int len) { l:VcV  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >^KO5N-:4  
} K<w$  
} TqXB2`7Ri  
} #ruL+- 8!<  
} zC\L-i>G  
-6>T0-  
堆排序: &Ukh  
||kUi=5  
package org.rut.util.algorithm.support; #ANbhHG  
h>'Mh;+  
import org.rut.util.algorithm.SortUtil; KP]{=~(  
 HO =\  
/** T|Fl$is  
* @author treeroot 0)-yLfTn  
* @since 2006-2-2 3,-xk!W$L  
* @version 1.0  [E|%  
*/ Bgj^n{9x  
public class HeapSort implements SortUtil.Sort{ .~dNzonq  
s8 0$   
/* (non-Javadoc) p!3!&{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <2{-ey]  
*/ %Y//}  
public void sort(int[] data) { dBMr%6tz  
MaxHeap h=new MaxHeap(); .+ g8zbD4  
h.init(data); DF!*S{)  
for(int i=0;i h.remove(); w0L+Sj db  
System.arraycopy(h.queue,1,data,0,data.length); :NPnwX8w  
} RwptFO  
5WvtvSO  
private static class MaxHeap{ Gg=Y}S7:  
%gE*x #  
void init(int[] data){ kls 6Dk#  
this.queue=new int[data.length+1]; f/NfvLi(AU  
for(int i=0;i queue[++size]=data; HTU?hbG(  
fixUp(size); +:?"P<'  
} a8laP N  
} V*w~Sr%  
@is!VzE  
private int size=0; &;]KntxB  
Tweku}D7  
private int[] queue; 5ps7)]  
OkaN VTB  
public int get() {  )tW0iFY  
return queue[1]; qmx4hs8sh  
} 2/m4|  
Td/J6Q9 0  
public void remove() { yO`HL'SMo  
SortUtil.swap(queue,1,size--); 9#X"m,SB  
fixDown(1); \DC0`  
} L|H:&|F  
file://fixdown 2jiH&'@  
private void fixDown(int k) { Qaeg3f3F3  
int j; [DzZ:8  
while ((j = k << 1) <= size) { 'Wz`P#/  
if (j < size %26amp;%26amp; queue[j] j++; nA?Ks!9T  
if (queue[k]>queue[j]) file://不用交换 oW \k%Vj  
break; |)}&: xA%  
SortUtil.swap(queue,j,k); 3BzC'nplm  
k = j; ?6T\uzL +%  
} J70r`   
} }a?(}{z-  
private void fixUp(int k) { 'NYW`,  
while (k > 1) { FZ~^cK9g:  
int j = k >> 1; ]]^eIjg>a6  
if (queue[j]>queue[k]) Q^! x8oUF  
break; eN{ewn#0.  
SortUtil.swap(queue,j,k); lzDA0MPI:  
k = j; r(6$.zx  
} h1AZ+9  
} B9h'}460H  
_ ,~D]JYE  
} %;MM+xVVX  
:.bBV]6q  
} RR9G$}WS(  
.:/[%q{k  
SortUtil: I92orr1  
3s B9t X  
package org.rut.util.algorithm; fIwG9cR  
(R|Ftjs .  
import org.rut.util.algorithm.support.BubbleSort; p%ZOLoc)Y  
import org.rut.util.algorithm.support.HeapSort; M>_ U9g  
import org.rut.util.algorithm.support.ImprovedMergeSort; J-d>#'Wb|  
import org.rut.util.algorithm.support.ImprovedQuickSort; wx[Y2lUh6  
import org.rut.util.algorithm.support.InsertSort; NPjNkpWm&=  
import org.rut.util.algorithm.support.MergeSort; 8RaRXnJ  
import org.rut.util.algorithm.support.QuickSort;  ;U<}2M!g  
import org.rut.util.algorithm.support.SelectionSort; X 3q2XU  
import org.rut.util.algorithm.support.ShellSort; oj%(@6L  
 O3~7  
/** o7sIpE9  
* @author treeroot s)9d\{  
* @since 2006-2-2 =s/UF_JN  
* @version 1.0 h"ZR`?h  
*/ uG,*m'x']  
public class SortUtil { h}&1 7M  
public final static int INSERT = 1; nv'YtmR  
public final static int BUBBLE = 2; S\<nCkE^  
public final static int SELECTION = 3; :TkR]bhm  
public final static int SHELL = 4; ~.&PQE$DF  
public final static int QUICK = 5; GMOnp$@H^s  
public final static int IMPROVED_QUICK = 6; #,B+&SK{  
public final static int MERGE = 7; `PS^o#  
public final static int IMPROVED_MERGE = 8; BBDt^$  
public final static int HEAP = 9; 88g|(k/  
5-2#H?:U  
public static void sort(int[] data) { x.kIzI5  
sort(data, IMPROVED_QUICK); kG>m(n  
} G/4~_\YMq  
private static String[] name={ Vqp 3'=No  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" G3${\'<  
}; [Ufx=BPx3  
+[Bl@RHe^  
private static Sort[] impl=new Sort[]{ ,%d?gi"&  
new InsertSort(), S'}pUGDO  
new BubbleSort(), #,CK;h9jy!  
new SelectionSort(), AR3v,eOs  
new ShellSort(), 'LMMo4o3  
new QuickSort(), @XQItc<  
new ImprovedQuickSort(), 8fWk C<f}  
new MergeSort(), hQ\W~3S55  
new ImprovedMergeSort(), *IQQsfL)  
new HeapSort() uy rS6e0  
}; ?.Lq`~T`  
p5`={'>-  
public static String toString(int algorithm){ #u/5 nm  
return name[algorithm-1]; LXS)(-&  
} t7 +U!  
OJT%?P%@{  
public static void sort(int[] data, int algorithm) { Ef\&3TcQ  
impl[algorithm-1].sort(data); /Y0oA3am  
} `h='FJ/!  
bzyy;`;6Q~  
public static interface Sort { jX&/ e'B  
public void sort(int[] data); 8iUYZF  
} FO{?Z%& ;  
Ctx{rf_~  
public static void swap(int[] data, int i, int j) { .f-s+J&ED  
int temp = data; |Ng}ZLBM  
data = data[j]; "5@\"L  
data[j] = temp; b^R_8x  
} X}ft7;Jpy  
} ]PQ6 em  
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