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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。 +&(J n  
插入排序: \3L$I-]m  
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package org.rut.util.algorithm.support; CJ0$;et  
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import org.rut.util.algorithm.SortUtil; EgFl="0  
/**  .fbYB,0w  
* @author treeroot c 3}x)aQ  
* @since 2006-2-2 :l4^iSf  
* @version 1.0 j-j'phK  
*/ rA[nUJ,  
public class InsertSort implements SortUtil.Sort{ Vn@A]Jx^  
8TUF w@H%  
/* (non-Javadoc) <\+Po<)3j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b_q! >&c  
*/ #j\*Lc"Ur:  
public void sort(int[] data) { G,+xT}@wu  
int temp; tP&{ J^G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5sG ]3z+1  
} A&D2T  
} m2jwqx{G  
} #W_i{bdO  
[kVpzpGr  
} zUe#Wp[  
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冒泡排序: l kI8 {  
$:qI&)/  
package org.rut.util.algorithm.support; @ysJt  
f S(^["*G  
import org.rut.util.algorithm.SortUtil; :8GlyN<E  
\ x3^  
/** 6wa<'!   
* @author treeroot ]}jgB 2x7  
* @since 2006-2-2 ^H f+du  
* @version 1.0 Iz 1*4@  
*/ l_UXrnm/N  
public class BubbleSort implements SortUtil.Sort{ 'SsPx&)l  
?IL! X-xx  
/* (non-Javadoc) mMel,iK=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .;]YJy  
*/ 9|us<k  
public void sort(int[] data) { b>G qNf!  
int temp; aa%Yk"V @  
for(int i=0;i for(int j=data.length-1;j>i;j--){ MBnK&GS  
if(data[j] SortUtil.swap(data,j,j-1); @SX%? mk8G  
} Tb>IHoil  
} 9{au leu R  
} t't^E,E .@  
} s@*,r@<  
K * xM[vO  
} .Y=Z!Q  
JS<e`#c&  
选择排序: "~ .8eKRQ  
\9&YV;Ct  
package org.rut.util.algorithm.support; WM~J,`]J  
w*|=k~z  
import org.rut.util.algorithm.SortUtil; UXcH";*9b  
7J #g1  
/** |H3?ox*  
* @author treeroot <z~2d  
* @since 2006-2-2 e<ism?WG  
* @version 1.0 RPa?Nv?e  
*/ 75QXkJu  
public class SelectionSort implements SortUtil.Sort { f(@"[-[  
7]<F>97  
/* wj5qQ]WC  
* (non-Javadoc) nN(D7wk  
* Q6s5#7h'"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -(%ar%~Zd  
*/ Q"l"p:n%n  
public void sort(int[] data) { f4A4  
int temp; SNopAACf1  
for (int i = 0; i < data.length; i++) { ai<MsQQ:=  
int lowIndex = i; l,^i5t'  
for (int j = data.length - 1; j > i; j--) { dA_V:HP  
if (data[j] < data[lowIndex]) { RGx]DP$5G  
lowIndex = j; @8 oDy$j  
} 3. K{T  
}  YiY&; )w  
SortUtil.swap(data,i,lowIndex); d~P<M3#>  
} YI? C-,  
} H L}sqcp  
/: \VwH  
} Mo?t[]L   
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Shell排序: 3& fIO  
%O4}i@Fe  
package org.rut.util.algorithm.support; n '0 $>Q  
^J*G%*  
import org.rut.util.algorithm.SortUtil; d =B@EyN  
.5#tB*H  
/** FJwZo}<6E  
* @author treeroot 8-y: ==C  
* @since 2006-2-2 R|Q_W X  
* @version 1.0 #sm_.?P  
*/ 7B:ZdDj  
public class ShellSort implements SortUtil.Sort{ 9$\;voo  
U`8^N.Snrp  
/* (non-Javadoc) a2 klOX{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,;+91lR3  
*/ s&QBFyKtJ  
public void sort(int[] data) { Te U7W?M^  
for(int i=data.length/2;i>2;i/=2){ '%]@a7w  
for(int j=0;j insertSort(data,j,i); fEv<W  
}  HN~v&,  
} yBD2  
insertSort(data,0,1); j~,LoGuPh  
} 6Qzu-  
D-b2E6 o6  
/** "o5gQTwb  
* @param data sP3.s_U^  
* @param j !7"K>m<  
* @param i 8.;';[  
*/ kT } '"  
private void insertSort(int[] data, int start, int inc) { ek;&<Z_ ]  
int temp; k,*#I<($  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >fZ/09&3  
} eV {FcJha  
} x[O#(^q  
} D @4&@>  
G=bP<XF  
} 0@FM^ejA#  
~=AKX(Q  
快速排序: $ DZQdhv  
uZiY<(X  
package org.rut.util.algorithm.support; ^ Mvsq)  
N;`[R>Z~  
import org.rut.util.algorithm.SortUtil; cLyuCaH>c  
N5rG.6K  
/** ~q_+;W.  
* @author treeroot b[[6X  
* @since 2006-2-2 iP? ASqo{  
* @version 1.0 <K=B(-~  
*/ &fd4IO/O  
public class QuickSort implements SortUtil.Sort{ M6hvi(!X2  
#G , *j  
/* (non-Javadoc) .dKRIFo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I\uB"Z{9  
*/ ,<P[CUD&&  
public void sort(int[] data) { iZq@W3GL C  
quickSort(data,0,data.length-1); ZAM+4#@  
}  ZV q  
private void quickSort(int[] data,int i,int j){ #L IsL  
int pivotIndex=(i+j)/2; 9X {nJ"  
file://swap tj^:SW.0  
SortUtil.swap(data,pivotIndex,j); `TlUJ]d)  
ME10dr  
int k=partition(data,i-1,j,data[j]); T;[c<gc/  
SortUtil.swap(data,k,j); r?yJ  
if((k-i)>1) quickSort(data,i,k-1); &pY G   
if((j-k)>1) quickSort(data,k+1,j); |Q)w3\S$  
%M,d/4=P  
} 7+!7]'V  
/** $H:h(ia:  
* @param data v.LUK  
* @param i `i)ePiE  
* @param j 5f*'wA  
* @return U1HD~  
*/ V-ouIqnI  
private int partition(int[] data, int l, int r,int pivot) { kdMS"iN8x  
do{ B?ob{K@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); nC!^,c  
SortUtil.swap(data,l,r); 6L> "m0  
} TX [%s@C  
while(l SortUtil.swap(data,l,r); M7<#=pX&  
return l; $E,DxDT  
} rD U6 5j  
U:4Og8  
} A{Htpm~  
'kg]|"M  
改进后的快速排序: Ce'2lo  
+ZA\ M:^b  
package org.rut.util.algorithm.support; ?M-8Fp3 +  
>fj$ wOq  
import org.rut.util.algorithm.SortUtil; ,Ho.O7H  
KIBZQ.uG  
/** U>-#('  
* @author treeroot yqb <<4I  
* @since 2006-2-2 {ZM2WFpE  
* @version 1.0 PM<LR?PLc  
*/ ApJf4D<V  
public class ImprovedQuickSort implements SortUtil.Sort { lvJ{=~u  
@$yYljP  
private static int MAX_STACK_SIZE=4096; d<'Yt|zt  
private static int THRESHOLD=10; 9egaN_K  
/* (non-Javadoc) 8Gg/M%wq9U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dlzamoS@AR  
*/ UG'U D"  
public void sort(int[] data) { ^t ldm7{_  
int[] stack=new int[MAX_STACK_SIZE]; bl>b/u7/6  
TIh zMW\/K  
int top=-1; j"sO<Q{6%  
int pivot; 1HWJxV"  
int pivotIndex,l,r; N b[o6AX  
zomNjy*  
stack[++top]=0; J+NK+,_*M  
stack[++top]=data.length-1; !K~$ -jlT  
]bE?n.NwZ  
while(top>0){ )9jQ_  
int j=stack[top--]; U@5Z9/n{  
int i=stack[top--]; Ib8{+j  
'I>#0VRr  
pivotIndex=(i+j)/2; NP'DuzC  
pivot=data[pivotIndex]; w ]-iM  
9Zsb1 M!n>  
SortUtil.swap(data,pivotIndex,j); M>gZVB,eP>  
6%INNIyAWa  
file://partition 7<o;3gR7Kj  
l=i-1; |B$\3,  
r=j; swq!S p  
do{ T|2%b*/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _1c_TMh}9  
SortUtil.swap(data,l,r); }Y ];ccT  
} B]F7t4Y!  
while(l SortUtil.swap(data,l,r); g2<S4  
SortUtil.swap(data,l,j); xi. KD  
ykhCt\t[  
if((l-i)>THRESHOLD){ 10IPq#Jj  
stack[++top]=i; pDq_nx9  
stack[++top]=l-1; HYmUxheN2  
} /(pChY>  
if((j-l)>THRESHOLD){ &*GX:0=/>  
stack[++top]=l+1; azc:C  
stack[++top]=j; (b}7Yb]#c  
} <1.mm_pw  
~Fb?h%w  
} N`6|Y  
file://new InsertSort().sort(data); VDY1F_Fk  
insertSort(data); yP4.Z9  
} W(4?#lA2W  
/** ea>\.D-S  
* @param data wR$8drn]Rq  
*/ r['C.S6  
private void insertSort(int[] data) { %\&dFwb  
int temp; x.Ml~W[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  " 1Aus  
} VVl-cU  
} J3^ZPW  
} ^(vd8&71  
Q 9<_:3  
} JHH&@Cn  
]sAD5<;  
归并排序: h18y?e7MU  
" <a|Q,!  
package org.rut.util.algorithm.support; s2=X>,kz?  
Hvo27THLo  
import org.rut.util.algorithm.SortUtil; @0'|Uygn  
as!j0j%  
/** }*R6p?L5  
* @author treeroot D07u?  
* @since 2006-2-2 j!7Uj]  
* @version 1.0 %]oLEmn}y  
*/ D+""o"%  
public class MergeSort implements SortUtil.Sort{ 'FFc"lqj  
~"Ki2'j)^]  
/* (non-Javadoc)  )6+W6:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *G41%uz  
*/ TJ:Lz]l >  
public void sort(int[] data) { RhmVHhj  
int[] temp=new int[data.length]; @{lnfOESl  
mergeSort(data,temp,0,data.length-1); 6J+ZeBk??  
}  U~t(YT  
p n>`v   
private void mergeSort(int[] data,int[] temp,int l,int r){ %WN2 xCSf  
int mid=(l+r)/2; uK5x[m  
if(l==r) return ; K*FAngIB  
mergeSort(data,temp,l,mid); {2@96o2}  
mergeSort(data,temp,mid+1,r); x)L@x Q  
for(int i=l;i<=r;i++){ V1A3l{>L  
temp=data; y8z%s/gRh  
} 1hij4m$b  
int i1=l; ]]3D` F}  
int i2=mid+1; w,9F riW  
for(int cur=l;cur<=r;cur++){ |Wk G='02  
if(i1==mid+1) Q4q#/z  
data[cur]=temp[i2++]; Q~_x%KN/`  
else if(i2>r)  64fG,b  
data[cur]=temp[i1++]; @CF4:NNHw  
else if(temp[i1] data[cur]=temp[i1++]; 1PSb72h<  
else 'DQyB`V2y  
data[cur]=temp[i2++]; (mlc' ]F  
} =YIQ _,{u  
} Shz;)0To  
P\e%8&_U/  
} 9lV'3UG-?  
!d(V7`8  
改进后的归并排序: R 0}%   
CI{x/ e^(  
package org.rut.util.algorithm.support; 9l]IE,u  
X2v'9 x  
import org.rut.util.algorithm.SortUtil; vE(Hy&Q&  
^dv>n]?  
/** ,RQ-w2j?  
* @author treeroot qE{S'XyM,  
* @since 2006-2-2 9MxGyGz$  
* @version 1.0 to7)gOX(  
*/ %>TdTt  
public class ImprovedMergeSort implements SortUtil.Sort { $ cSZX#\  
aDuanGC/V  
private static final int THRESHOLD = 10; 7ow1=%Q  
.~J^`/o  
/* K<GCP2  
* (non-Javadoc) HrGX-6`  
* =P{RHhWy;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @HI5; z  
*/ cqudF=q  
public void sort(int[] data) { ;rgsPVbVf  
int[] temp=new int[data.length]; F1>,^qyG6  
mergeSort(data,temp,0,data.length-1); x{$NstGB  
} 'Iu(lpF&  
'oG'`ED"  
private void mergeSort(int[] data, int[] temp, int l, int r) { *Y Ox`z!R  
int i, j, k; 4a-wGx#h  
int mid = (l + r) / 2; v(`$%V.  
if (l == r) 1 <+^$QL  
return; 0P(}e[~Z  
if ((mid - l) >= THRESHOLD) Q*: Ow]  
mergeSort(data, temp, l, mid); G<'S  
else 7f>n`nq?  
insertSort(data, l, mid - l + 1); =%LS9e^7D  
if ((r - mid) > THRESHOLD) 16vfIUtb  
mergeSort(data, temp, mid + 1, r); zeX?]@]Y  
else D#0}/  
insertSort(data, mid + 1, r - mid); V EzIWNV  
OK=t)6&b  
for (i = l; i <= mid; i++) { }qTvUs  
temp = data; M3%< kk-_  
} A\`Uu&  
for (j = 1; j <= r - mid; j++) { I/g]9 y  
temp[r - j + 1] = data[j + mid]; ^^#A9AM  
} ( C&f~U  
int a = temp[l]; 2 O%UT?R  
int b = temp[r]; h.nzkp5  
for (i = l, j = r, k = l; k <= r; k++) { v|6fqG+Q\  
if (a < b) { GfDA5v[  
data[k] = temp[i++]; sC>8[Jatd  
a = temp; C$8=HM3  
} else { Yh=Zn[ U  
data[k] = temp[j--]; v&Kw 3!X#E  
b = temp[j]; aC*J=_9o #  
} tBrVg<]t  
} A Ho<E"R\  
} "TPMSx&Ei  
=B 9U  
/** Wxjpe4  
* @param data v!2`hq O  
* @param l 5s;#C/ZZ  
* @param i y}A-o_u@cD  
*/ WVZ\4y  
private void insertSort(int[] data, int start, int len) { pS0T>r  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]#`bYh^y  
} #ed]zI9O  
} &PbH!]yd  
} 2bqwnRT}  
} 3XIxuQwf  
3jeR;N]x  
堆排序: XIU2l}g  
=$MV3]  
package org.rut.util.algorithm.support; q07>FW R  
,M9'S;&^  
import org.rut.util.algorithm.SortUtil; \a<E3 <  
rie1F,  
/** rVLA"x 9u  
* @author treeroot tZJKB1#WbP  
* @since 2006-2-2 ~34$D],D  
* @version 1.0 fI6F};I5}T  
*/ '?\Hm'8  
public class HeapSort implements SortUtil.Sort{ : M Md@  
K|iNEhuc  
/* (non-Javadoc) bbz86]AhY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OA+W$  
*/ gbvBgOp  
public void sort(int[] data) { c8(.bmvF  
MaxHeap h=new MaxHeap(); jsuQ R  
h.init(data); S5j#&i  
for(int i=0;i h.remove(); X]N8'Yt  
System.arraycopy(h.queue,1,data,0,data.length); D`u{U]  
} _b+3;Dy  
Gb"PMai  
private static class MaxHeap{ BJqM=<nQ  
d< y B ~Y  
void init(int[] data){ 'SC`->F4D  
this.queue=new int[data.length+1]; \!_ >ul  
for(int i=0;i queue[++size]=data; 9vXrC_W9  
fixUp(size); g%K3ah v  
} )pg?ZM9  
} 5z0SjQ  
co: W!  
private int size=0; a}6Wo=  
L;Nm"[ `  
private int[] queue; ZW2U9  
kc}e},k  
public int get() { $#CkI09  
return queue[1]; {&xKS WNc  
} 6b@:La  
GZse8ng  
public void remove() { `Do-!G+W  
SortUtil.swap(queue,1,size--); OfPWqNpO  
fixDown(1); S^3I"B  
} Y #KgaZ7N  
file://fixdown j#29L"  
private void fixDown(int k) { l/SbJrM*  
int j; ^hU7QxW  
while ((j = k << 1) <= size) { W}Z'zU?[  
if (j < size %26amp;%26amp; queue[j] j++; K?) &8S  
if (queue[k]>queue[j]) file://不用交换 QHK$2xtq|  
break; YqYCW}$  
SortUtil.swap(queue,j,k); }=NjFK_6  
k = j; lV3\5AEW  
} b*7OIN5h  
} 4jvgyi 9  
private void fixUp(int k) { 0Y{A  
while (k > 1) { [^#6.xH  
int j = k >> 1; ='a$>JVJ5  
if (queue[j]>queue[k]) {@k5e) Q  
break; K"eW.$  
SortUtil.swap(queue,j,k); ^MuO;<<,.  
k = j; EiSS_Lc  
} /.P*%'g  
} TC'tui  
O",:0<  
} "+p_{J/P  
b3W@{je  
} < yBZsSj  
MC^H N w  
SortUtil: +Ibcc8Qud  
+[ !K  
package org.rut.util.algorithm; LyH{{+V  
=j6f/8   
import org.rut.util.algorithm.support.BubbleSort; 9%pq+?u9  
import org.rut.util.algorithm.support.HeapSort; tQF,E&Jo8  
import org.rut.util.algorithm.support.ImprovedMergeSort; "d9"Md0k  
import org.rut.util.algorithm.support.ImprovedQuickSort; Fc{hzqaP8  
import org.rut.util.algorithm.support.InsertSort; $0 eyp]XC\  
import org.rut.util.algorithm.support.MergeSort; :A>cf}  
import org.rut.util.algorithm.support.QuickSort; BZe x  
import org.rut.util.algorithm.support.SelectionSort; 4Z,MqG>  
import org.rut.util.algorithm.support.ShellSort; V|)3l7IC<  
W-2,QVp%  
/** Ap=L lZ  
* @author treeroot uD_iyK0,  
* @since 2006-2-2 `J#(ffo-  
* @version 1.0 ^ 14U]<  
*/ ;~3CuN8  
public class SortUtil { oIN!3  
public final static int INSERT = 1; ,dP-sD;<  
public final static int BUBBLE = 2; |#>\GU=!  
public final static int SELECTION = 3; WL:CBE#  
public final static int SHELL = 4; /0IvvD!7N  
public final static int QUICK = 5; {%*,KB>b  
public final static int IMPROVED_QUICK = 6; 9t9x&.A  
public final static int MERGE = 7; L TzD\C'  
public final static int IMPROVED_MERGE = 8; LY(YgqL  
public final static int HEAP = 9; vvwNJyU-  
_SY4Q s`d  
public static void sort(int[] data) { -W<x|ph U  
sort(data, IMPROVED_QUICK); q,(U8  
} j#rjYiYKy  
private static String[] name={ },lHa!<^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ci a'h_w  
}; Wxx? iW ,  
/_rEI,[k  
private static Sort[] impl=new Sort[]{ ~bC{ R&p  
new InsertSort(), J'jwRn  
new BubbleSort(), e0Zwhz,  
new SelectionSort(), G(" S6u  
new ShellSort(), ;EDc1:  
new QuickSort(), `83s97Sa  
new ImprovedQuickSort(), fMgB!y"Em  
new MergeSort(), m^I+>Bp/:  
new ImprovedMergeSort(), ssj(-\5  
new HeapSort() aNs~Uad1U  
}; *:L-/Q)i  
+uZ,}J  
public static String toString(int algorithm){ {}RE;5n\['  
return name[algorithm-1]; ra2sYH1wr  
} 9$U@h7|Q`  
%&w 8E[  
public static void sort(int[] data, int algorithm) { Z<jio  
impl[algorithm-1].sort(data); M$iDaEu-  
} B)>r~v]  
8` ~M$5!  
public static interface Sort { vkUXMMuf+e  
public void sort(int[] data); 1$mxMXNsJ  
} )lh48Ag0t;  
q% *-4GP  
public static void swap(int[] data, int i, int j) { #e)A  
int temp = data; nE;^xMOK!  
data = data[j]; `< _A#@  
data[j] = temp; HmlE Cx  
} |[qq $  
} #y;TSHx/  
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