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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。 M&=SvM.f  
插入排序: tMdSdJ8  
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package org.rut.util.algorithm.support; ?$)a[UnqX  
<9H3d7%  
import org.rut.util.algorithm.SortUtil; Q7pCF,;  
/** Otr=+i ZI  
* @author treeroot :?EZ\WM7  
* @since 2006-2-2 DNDzK iMk  
* @version 1.0 C!547(l[  
*/ Uth+4Aq  
public class InsertSort implements SortUtil.Sort{ $C=XSuPNK  
w)K547!00  
/* (non-Javadoc) lNc0znY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m%eCTpYo  
*/ = ZoNkj/^,  
public void sort(int[] data) { 4T52vM  
int temp; )M.g<[= ^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )Dms9:  
} KiMlbF.~V  
} `B&E?x  
}  [A,!3BN  
Jo8fMG\P  
} G \a`F'Oo  
|,KsJ2hD  
冒泡排序: (' %Y3z;  
fb0)("_V  
package org.rut.util.algorithm.support; %qJgtu"8  
d8 ~%(I9  
import org.rut.util.algorithm.SortUtil; r9-ayp#pC  
$EIKi'!8  
/** N:'GNMu  
* @author treeroot YG?4DF  
* @since 2006-2-2 M-;Mw Lx  
* @version 1.0 [+5g 9tBJ  
*/ lO9Ixhf~iu  
public class BubbleSort implements SortUtil.Sort{ G]xYQ]  
kDJqT  
/* (non-Javadoc) w&}<b%l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vx6lud0k}  
*/ nIlx?(=pu  
public void sort(int[] data) { ~f[;(?39xZ  
int temp; DdISJWc'`5  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +MYrNR.p  
if(data[j] SortUtil.swap(data,j,j-1); 5s%e9x|kP  
} ]n@T5*=  
} Q6 o1^s  
} _8SB+s*  
} {{bwmNv"  
IrRe6nf@K  
} =>o !   
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选择排序: a` 9pHH:7Q  
-#<{3BJTrz  
package org.rut.util.algorithm.support; %c$|.TkX  
`o9:6X?RA  
import org.rut.util.algorithm.SortUtil; }/tf^@  
2>.b~q@  
/** $M,Q"QL  
* @author treeroot IEM{?  
* @since 2006-2-2 pi70^`@'B  
* @version 1.0 9I5AYa?  
*/ L|D9+u L  
public class SelectionSort implements SortUtil.Sort { Q|VBH5}1O  
: maBec)  
/* qb=%W  
* (non-Javadoc) ?&qQOM~b-\  
* DIP%*b#l$\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s9Tn|Pm+!\  
*/ KDf#e3  
public void sort(int[] data) { v0!(&g 3Sd  
int temp; 5D-as9k*  
for (int i = 0; i < data.length; i++) { *Vb#@O!  
int lowIndex = i; 2ZbSdaM=  
for (int j = data.length - 1; j > i; j--) { '9qyf<MlY  
if (data[j] < data[lowIndex]) { Vnb@5W2\  
lowIndex = j; xz} CqPJ#  
} A#Ga!a  
} V\n!?1{kdF  
SortUtil.swap(data,i,lowIndex); uARkf'  
} `CL\-  
} | "b|Q  
M/xm6  
} n0K+/}m  
J_XkQR[Y  
Shell排序: 1NTx?JJfW  
rHybP6C<  
package org.rut.util.algorithm.support; 03iy[~Y2  
PktnjdFV  
import org.rut.util.algorithm.SortUtil; ~ e<,GUx(]  
gQ{<2u  
/** aWvC-vZk  
* @author treeroot G^;]]Ji"  
* @since 2006-2-2 BTO l`U  
* @version 1.0 >pol'=  
*/ cN2Pl%7  
public class ShellSort implements SortUtil.Sort{ uHZjpMoM  
Hit )mwfYE  
/* (non-Javadoc) ^[+2P?^K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ::GW  
*/ [%/B"w Tt  
public void sort(int[] data) { < uV@/fn<  
for(int i=data.length/2;i>2;i/=2){ AjO{c=d  
for(int j=0;j insertSort(data,j,i); )Fqtb;W=  
} x a\~(B.  
} F7=\*U  
insertSort(data,0,1); "*c&[ALw  
} !6#.%"{-  
XfEp_.~JM  
/** y+7+({w<  
* @param data R +U*]5~R  
* @param j LF (S"Of  
* @param i ,#^2t_c/  
*/ 3c:fYE  
private void insertSort(int[] data, int start, int inc) { %rl<%%T#.M  
int temp; P=E10  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); TL -AL tG  
} z>=;Xe8P8n  
} sUk n.g!  
} .G<Or`K^i  
l;h -`( 11  
} <P*7u\9&  
tqt~F2u  
快速排序: <I?f=[  
=8]Ru(#Ig  
package org.rut.util.algorithm.support; b ts*qx&)  
PKGqu,J,  
import org.rut.util.algorithm.SortUtil; `sv]/8RN  
;s4e8![o3  
/** b+dmJ]c  
* @author treeroot HR  
* @since 2006-2-2 h9nh9a(2  
* @version 1.0 hA`9[58/  
*/ O!F"w !5@  
public class QuickSort implements SortUtil.Sort{ FELW?Q?k  
,&@FToR  
/* (non-Javadoc) h,/3 }  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a94 nB  
*/ Jcp=<z*0  
public void sort(int[] data) { 20A:,pMb  
quickSort(data,0,data.length-1); p-z!i+  
} (f* r  
private void quickSort(int[] data,int i,int j){ AO7X-,  
int pivotIndex=(i+j)/2; 7 lq$PsC  
file://swap L<Z2  
SortUtil.swap(data,pivotIndex,j); ?Qpi(Czbpq  
e&m TaCLG  
int k=partition(data,i-1,j,data[j]); @ L/i  
SortUtil.swap(data,k,j); \pI ,6$'  
if((k-i)>1) quickSort(data,i,k-1); 3m~3l d  
if((j-k)>1) quickSort(data,k+1,j); )%: W;H  
kWbY&]ZO  
} %2?"x*A  
/** )R@Y$*fm  
* @param data nXh<+7  
* @param i f\:I1y  
* @param j B\dhw@hM  
* @return L'"od;(6R  
*/ 1@+&6UC  
private int partition(int[] data, int l, int r,int pivot) { mm | *  
do{ (tg+C\ S.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Wx8 cK=  
SortUtil.swap(data,l,r); 4LJOT_  
} a=[|"J<M  
while(l SortUtil.swap(data,l,r); +:J:S"G  
return l; S! .N3ezn  
} L_=3`xE _  
pQm-Hr78j  
} v1NFz>Hx  
,`$2  
改进后的快速排序: (<|1/^~=  
|fn%!d`2  
package org.rut.util.algorithm.support; U71A#OD^U  
RS7J~Q  
import org.rut.util.algorithm.SortUtil; Vl:M6d1  
A<[w'"  
/** 7z8   
* @author treeroot 7#g<fh  
* @since 2006-2-2 z2dW)_fU$  
* @version 1.0 NE@P8pQ>  
*/ A&Q!W)=  
public class ImprovedQuickSort implements SortUtil.Sort { Ez>!%Hpn\  
sgB|2cj;j  
private static int MAX_STACK_SIZE=4096; u3PM 7z!~  
private static int THRESHOLD=10; ZgzYXh2  
/* (non-Javadoc) ,^T0!k$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^P*+0?aFr  
*/ p"n3JV.~k+  
public void sort(int[] data) { m&Y?]nbq  
int[] stack=new int[MAX_STACK_SIZE]; w`Rt"d_B  
_b[Pk;8}j;  
int top=-1; \@7 4I7  
int pivot; %S%0/  
int pivotIndex,l,r; u z:@  
)Mw 3ZE92  
stack[++top]=0; SsIN@  
stack[++top]=data.length-1; mZ#IP  
NV3oJ0f&2  
while(top>0){ T(*A0  
int j=stack[top--]; uq]E^#^  
int i=stack[top--]; 5=.mg6:  
@N\ Ht'f  
pivotIndex=(i+j)/2; H4e2#]*i7  
pivot=data[pivotIndex]; d 4;   
42 rIIJ1A  
SortUtil.swap(data,pivotIndex,j); Z ^yn S  
R)GDsgXy  
file://partition < 'r<MA<  
l=i-1; X*M--*0q'  
r=j; j1dz'G}hj  
do{ /^ [K  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); l37l| xp~  
SortUtil.swap(data,l,r); i,$n4  
} /oU$TaB>(  
while(l SortUtil.swap(data,l,r); Ozc9yy!%  
SortUtil.swap(data,l,j); ze#ncnMo  
GF*E+/ ;  
if((l-i)>THRESHOLD){ AyMbwCR"X  
stack[++top]=i; 7+J<N@.d  
stack[++top]=l-1; zXeBUbVi  
} '\LU 8VC  
if((j-l)>THRESHOLD){ UeSPwY  
stack[++top]=l+1; 2ZQ|nwb7  
stack[++top]=j; { *Wc`ZBY  
} d#HN '(2t  
JU-eoB}m  
} ;:ocU?  
file://new InsertSort().sort(data); + hMF\@  
insertSort(data); NJ!}(=1|K  
} hhr>nuA  
/** Um I,?p  
* @param data 4_vJ_H-mO,  
*/ ] iiB|xT  
private void insertSort(int[] data) { ko T: r  
int temp; ;0E[ ; L!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9h^TOZK)  
} Qkg([q4  
} d/Fy0=0  
} BlfW~l'mx  
c *Pt;m  
} )Z@hk]@?_[  
Th5}?j7  
归并排序: Oat #%  
D?9EO=  
package org.rut.util.algorithm.support; jD_B&MQz  
IS }U2d,W  
import org.rut.util.algorithm.SortUtil; O:[@?l  
VN<baK%]  
/** AKKVd% P(  
* @author treeroot [{rne2sA  
* @since 2006-2-2 ltXGm)+  
* @version 1.0 =D?{d{JT  
*/ wEbO|S+K1  
public class MergeSort implements SortUtil.Sort{ v|YJ2q?19  
v!rOT/I  
/* (non-Javadoc) H?dEgubg7]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZvW&%*k=  
*/ O9MBQNwjA  
public void sort(int[] data) { VV=6v;u`  
int[] temp=new int[data.length]; ]hA]o7 k  
mergeSort(data,temp,0,data.length-1); LfG$?<}hR  
} R~XNF/QMl  
5?gZw;yiv%  
private void mergeSort(int[] data,int[] temp,int l,int r){ ~2?UEv6  
int mid=(l+r)/2; &Zm1(k6&K  
if(l==r) return ; /)xQ# yfX  
mergeSort(data,temp,l,mid); 0:k MnHn\  
mergeSort(data,temp,mid+1,r); 0XrOOYmx  
for(int i=l;i<=r;i++){ Hbz,3{o5  
temp=data; * uZ'MS  
} / , .rUn1  
int i1=l;   [IW6F  
int i2=mid+1; #.~lt8F  
for(int cur=l;cur<=r;cur++){ VufG7%S{  
if(i1==mid+1) 05vu{>  
data[cur]=temp[i2++]; ou'|e"tI  
else if(i2>r) U7Pn $l2!  
data[cur]=temp[i1++]; 8*yk y  
else if(temp[i1] data[cur]=temp[i1++]; N!=Q]\ZD  
else 5[>N[}Ck>  
data[cur]=temp[i2++]; b 'yW+  
} 2/FH9T;e".  
} . aqP=  
=J&aN1Hgt  
} bR? $a+a)  
"0l7%@z*)q  
改进后的归并排序: uB uwE6  
>R8eAR$N  
package org.rut.util.algorithm.support; qy~@cPT  
( 0Z3Ksfj1  
import org.rut.util.algorithm.SortUtil; G@]|/kN1y  
O(f&0h !  
/** cdsF<tpy  
* @author treeroot t%>x}b"2T  
* @since 2006-2-2 U})Z4>[bvt  
* @version 1.0 o[CjRQY]P  
*/ I~I$/j]e`  
public class ImprovedMergeSort implements SortUtil.Sort { O\qY? )  
<\5Y~!)  
private static final int THRESHOLD = 10; \%:]o-+"I  
t>>\U X  
/* +S>}<OE  
* (non-Javadoc) (Qys`D   
* }X*.Vv A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  <E&"]  
*/ k34!*(`q  
public void sort(int[] data) { qfzT8-Y  
int[] temp=new int[data.length]; M 4TFWOC1  
mergeSort(data,temp,0,data.length-1); W&(98}oT  
} `` mi9E  
Ayi Uz  
private void mergeSort(int[] data, int[] temp, int l, int r) { az ?2  
int i, j, k; $C !Mk  
int mid = (l + r) / 2; Eq?d+s>  
if (l == r) #5.L%F  
return; :,(ZMx\  
if ((mid - l) >= THRESHOLD) M.R] hI  
mergeSort(data, temp, l, mid); N%&D(_  
else )C CrO   
insertSort(data, l, mid - l + 1); V2?&3Z) W  
if ((r - mid) > THRESHOLD) -"e$ VB  
mergeSort(data, temp, mid + 1, r); 13T0"}  
else A/"p PO  
insertSort(data, mid + 1, r - mid); nob^ I5?  
[,fdNxc8  
for (i = l; i <= mid; i++) { &$</|F)y  
temp = data; 5U/1Z{  
} J]|lCwF  
for (j = 1; j <= r - mid; j++) { \dag~b<  
temp[r - j + 1] = data[j + mid]; <\cH9D`dE  
} Z"fnjH  
int a = temp[l]; |E)IJj 3  
int b = temp[r]; 2 <@27 C5  
for (i = l, j = r, k = l; k <= r; k++) { s GP}>w-JZ  
if (a < b) { 1y5$  
data[k] = temp[i++]; h}_1cev?  
a = temp; B:\TvWbu  
} else { /8` S}g+  
data[k] = temp[j--]; |<ZkJR3B  
b = temp[j]; grhwPnKl  
} 21BlLz  
} ,\K1cW~U5  
} /U%Xs}A)  
S qQqG3F  
/** txwTJScg  
* @param data VoJelyzh  
* @param l <IBzh_  
* @param i 9GZKT{*  
*/ 1=t\|Th-  
private void insertSort(int[] data, int start, int len) { ZkJYPXdn?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jF\J+:5M  
} I!;#Nk>  
} ,e ~@  
} yv<0fQ  
}  o2ndnIL  
 -'|pt,)  
堆排序: Vhww-A  
}hFjl4`xa  
package org.rut.util.algorithm.support; 2Ax HhD.  
Dn?P~%  
import org.rut.util.algorithm.SortUtil; $W8  
G1"=}Wt`  
/** ~qiSkG  
* @author treeroot F62arDA  
* @since 2006-2-2 S{NfU/: dL  
* @version 1.0 w%1B_PyDg  
*/ X~Li`  
public class HeapSort implements SortUtil.Sort{ 1lNg} !)[K  
T@]vjXd![  
/* (non-Javadoc) (r^IW{IndX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  /y,~?  
*/ g'`J'6Pn  
public void sort(int[] data) { )]%GNdU  
MaxHeap h=new MaxHeap(); jBEt!Azur  
h.init(data); XRI1/2YA  
for(int i=0;i h.remove(); kl|KFdA;  
System.arraycopy(h.queue,1,data,0,data.length); !o 7uZC\  
} E$FXs~a  
`oh'rm3'8  
private static class MaxHeap{ -NVk>ENL4  
T!hU37g h?  
void init(int[] data){ gT R:9E:B  
this.queue=new int[data.length+1]; NDRk%_Eu(  
for(int i=0;i queue[++size]=data; *Df|D/,WE  
fixUp(size); Y 1 i!  
} i)0*J?l=  
} 'PlKCn`(w  
nYuZg6K  
private int size=0; ~`{HWmah  
mLO{~ruu  
private int[] queue; IrXC/?^h  
eN%Ks  
public int get() { Y:VM 5r)  
return queue[1]; I/GZ  
} %f@VOSs  
&,fBg6A%  
public void remove() { Z$,1Tk"O/s  
SortUtil.swap(queue,1,size--); doxQS ohS  
fixDown(1); 8jjJ/Mz`  
} -{ZTp8P>  
file://fixdown AdB5D_ Ir  
private void fixDown(int k) { .l*]W!L]  
int j; j~"X`:=  
while ((j = k << 1) <= size) { 6yF4%Sz9  
if (j < size %26amp;%26amp; queue[j] j++; "_C^Bc  
if (queue[k]>queue[j]) file://不用交换 yi7-[W}  
break; nrA}36E  
SortUtil.swap(queue,j,k); -)?~5Z   
k = j; u9>.x zYG  
} "wxs  
} 9r7QE&.  
private void fixUp(int k) { D|Z,eench  
while (k > 1) { vdNh25a<h  
int j = k >> 1; HF5aU:M  
if (queue[j]>queue[k]) Xig+[2zS  
break; 7BF't!-2F  
SortUtil.swap(queue,j,k); yaA9* k  
k = j; 5in6Y5ckj  
} x-U^U.i@  
} $;+B)#  
q[b-vTzI  
} bs]ret$?(q  
i<1w*yu  
} T{|'<KT  
\x x<\8Qr_  
SortUtil: 5D]%E?ag  
~/\;7E{8!  
package org.rut.util.algorithm; *Yvfp{B  
89@89-_mC  
import org.rut.util.algorithm.support.BubbleSort; 'oEFNC9V  
import org.rut.util.algorithm.support.HeapSort; GA6Z{U{XS  
import org.rut.util.algorithm.support.ImprovedMergeSort;  tB[(o%k  
import org.rut.util.algorithm.support.ImprovedQuickSort; d+ih]?  
import org.rut.util.algorithm.support.InsertSort; !?ayZ5G([  
import org.rut.util.algorithm.support.MergeSort; #joU}Rj|  
import org.rut.util.algorithm.support.QuickSort; u3 ?+Hu|*T  
import org.rut.util.algorithm.support.SelectionSort; $&k2m^R<  
import org.rut.util.algorithm.support.ShellSort; E[htNin.B~  
XT= #+  
/** 4lb3quY$Us  
* @author treeroot rg_-gZl8&z  
* @since 2006-2-2 f8N  
* @version 1.0 c1CP1 2  
*/ Z5-"a?{Y  
public class SortUtil { $}OU~d1q  
public final static int INSERT = 1; v<tH 3I+   
public final static int BUBBLE = 2; N!"GwH  
public final static int SELECTION = 3; KL.{)bi  
public final static int SHELL = 4; 0tn5>Dsk  
public final static int QUICK = 5; n4k. tq  
public final static int IMPROVED_QUICK = 6; m3 (fr  
public final static int MERGE = 7; .K}u`v T  
public final static int IMPROVED_MERGE = 8; R.|fc5_"+  
public final static int HEAP = 9; VuJth  
zG@9-s* L  
public static void sort(int[] data) { F>n<;<  
sort(data, IMPROVED_QUICK); ,Xk8{ =  
} xHykU;p@  
private static String[] name={ V>A@Sw  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" I LF"m;  
}; MJV&%E6{:{  
xJ>hN@5}i  
private static Sort[] impl=new Sort[]{ c 2?(.UV  
new InsertSort(), 52l|  
new BubbleSort(), xYM/{[  
new SelectionSort(), ^lRXc.c z  
new ShellSort(), x}N+vK   
new QuickSort(), %r6~5_A  
new ImprovedQuickSort(), ]v94U b   
new MergeSort(), WU#bA|Cf  
new ImprovedMergeSort(), ( rZq0*  
new HeapSort() w6R=r n  
}; +#1WOQfAD  
$./JA) `  
public static String toString(int algorithm){ )J~Q x-jG  
return name[algorithm-1]; I^M3>}p  
} vCbqZdy?  
4p>@UB&U  
public static void sort(int[] data, int algorithm) { 9Wx q  
impl[algorithm-1].sort(data); 5[X^1  
} ;5"r)F+P  
]ueq&|  
public static interface Sort { 8xg:ItJaA0  
public void sort(int[] data); )5d&K8@  
} +*)B;)P  
)V)4N[?GC  
public static void swap(int[] data, int i, int j) { (sJ{27b_  
int temp = data; _rs!6tp  
data = data[j]; A_Sl#e  
data[j] = temp; _=q)lt-UY  
} }#EiL !Pv  
} c4L5"_#`x-  
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