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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。 S+bWD7  
插入排序: SE7 (+r  
rym\5 `)  
package org.rut.util.algorithm.support; XxrO:$  
30T:* I|  
import org.rut.util.algorithm.SortUtil;  q;He:vX  
/** #Z3I%bkw H  
* @author treeroot k)4lX|}Vm  
* @since 2006-2-2 !h~#L"z  
* @version 1.0 '~vSH9nx/  
*/ p<^/T,&I  
public class InsertSort implements SortUtil.Sort{ MCO$>QL  
-|iA!w#31  
/* (non-Javadoc) EKJc)|8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VL,?91qwe  
*/ ObHz+qRG  
public void sort(int[] data) { o dQ&0d  
int temp; zdQu%q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J$=b&$I(  
} /3:IE%o  
} Vm%ux>}  
} 6W#F Ss~  
di P4]/%1  
} HW%bx"r+4f  
Js2_&?}3f  
冒泡排序: KV&_^xSoh|  
u$`x]K=Zsm  
package org.rut.util.algorithm.support; 2|H'j~  
ofhZ@3  
import org.rut.util.algorithm.SortUtil; Q~8&pP8 I!  
w5JC2   
/** -tdON  
* @author treeroot Tee3U%Y  
* @since 2006-2-2 <:}AC{I  
* @version 1.0 f#-T%jqnK  
*/ N#-\JlJ)  
public class BubbleSort implements SortUtil.Sort{ DB= cc  
t;PnjCD<`  
/* (non-Javadoc) ,OFr]74\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K OHH74}_  
*/ 1+ARV&bc  
public void sort(int[] data) { -Ce4px?3  
int temp; V<I${i$]0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~G^doj3|+  
if(data[j] SortUtil.swap(data,j,j-1); D`@U[`Sw  
} I }I/dh  
} FQ ^^6Rl  
} |>V>6%>vK6  
} .T>}O0L"  
![C $H5  
} a^1c _  
:iC\#i]6  
选择排序: 1:Gd{z  
-L<Pm(v&  
package org.rut.util.algorithm.support; SJr:  
 b- /x  
import org.rut.util.algorithm.SortUtil; c&W.slE6  
'GoeVq  
/** ~7H.<kJt  
* @author treeroot 2g545r.  
* @since 2006-2-2 Hmd:>_[f  
* @version 1.0 2= mD  
*/ #al^Uqd  
public class SelectionSort implements SortUtil.Sort { Wm&f+{LO+K  
P!ICno6[e  
/* $yK!Q)e:  
* (non-Javadoc) `3n*4Lz  
* K9Fnb6J$u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qeog$g.HI  
*/ >Tx;<G  
public void sort(int[] data) { )5OU!c  
int temp; ]YzAcB.R  
for (int i = 0; i < data.length; i++) { |O2PcYNu  
int lowIndex = i; `roSOX1f  
for (int j = data.length - 1; j > i; j--) { jG :R\D}0  
if (data[j] < data[lowIndex]) { PyF4uCn"H  
lowIndex = j; v[ '5X  
} dVfDS-v!  
} g7F Z -  
SortUtil.swap(data,i,lowIndex); Xlw=R2`)~  
} Z`KmH.l!  
} Tq8r SZi  
=h;!#ZC  
} z+I-3v  
Shd,{Z)-Tg  
Shell排序: c.WT5|:qw  
NBYE#Uih  
package org.rut.util.algorithm.support; t_Wn<)XA  
20)Il:x  
import org.rut.util.algorithm.SortUtil; 7:%K-LeaQu  
5i?U-  
/** sSK$  
* @author treeroot P|U>(9;P,  
* @since 2006-2-2 Mw. +0R!T  
* @version 1.0 w>s  
*/ ZP<X#]$qb  
public class ShellSort implements SortUtil.Sort{ jw[`\h}8  
"kC>EtaX  
/* (non-Javadoc) NM Ajt>t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =qvU9p2o  
*/ Dn?L   
public void sort(int[] data) { c[$oR,2b13  
for(int i=data.length/2;i>2;i/=2){ 'z'm:|JW  
for(int j=0;j insertSort(data,j,i); %9.KH  
} )J0VB't  
} ijB,Q>TgO  
insertSort(data,0,1); E=d[pI,e  
} 8Bvjj|~ (@  
m.*+0NG  
/** KI{u:Lbi  
* @param data ($TxVFNT  
* @param j J:(l&  
* @param i n'H\*9t  
*/ {65X37W  
private void insertSort(int[] data, int start, int inc) { ~6nQ-  
int temp; GZw<Y+/V"5  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ElAG~u?  
} ORoraEK  
} :<W 8uDAs  
} 9[! Hz)|X  
".u?-xcbJ  
} A@] n"  
i/L1KiCLx  
快速排序: BhjXNf9[  
]Vsze4>Z[  
package org.rut.util.algorithm.support; N%a[Y  
<3bh-)  
import org.rut.util.algorithm.SortUtil; 2gGJ:,RC$  
TwN8|ibVmP  
/** f`%k@\  
* @author treeroot KK+Mxoj,  
* @since 2006-2-2 $ ]HIYYs  
* @version 1.0 X%dOkHarB  
*/ ZDf9Npe  
public class QuickSort implements SortUtil.Sort{ &}FYz8w 2/  
Q pX@;j  
/* (non-Javadoc) =pNkS1ey  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `y\:3bQ4  
*/ ,-b9:]{L  
public void sort(int[] data) { u-Vnmig9  
quickSort(data,0,data.length-1); s|%</fMt9  
} Rq 7ksTo  
private void quickSort(int[] data,int i,int j){ C{) )T5G  
int pivotIndex=(i+j)/2; DXUI/C f  
file://swap P(4[<'H O  
SortUtil.swap(data,pivotIndex,j); 5v3B8 @CsA  
$`  
int k=partition(data,i-1,j,data[j]); S("bN{7nE  
SortUtil.swap(data,k,j); Z(Vrmz2.  
if((k-i)>1) quickSort(data,i,k-1); c"~TH.,d  
if((j-k)>1) quickSort(data,k+1,j); q8oEb  
0,c z&8  
} Np<Aak  
/** |J\/U,nh  
* @param data !xvPG  
* @param i `{/=i|6  
* @param j 4k#6)e  
* @return M3Z yf  
*/ S `[8TZ  
private int partition(int[] data, int l, int r,int pivot) { OjCT%6hy;  
do{ LOA 90.D  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?YS`?Rr  
SortUtil.swap(data,l,r); 3EFk] X  
} t@Jo ?0s  
while(l SortUtil.swap(data,l,r); \u*,~J)z  
return l; V7^?jck  
} h<j04fj  
[bcqaT  
} Frml'Vfq7  
}bHpFe  
改进后的快速排序: HGKm?'['   
=_XcG!"  
package org.rut.util.algorithm.support; e7;]+pN]J  
^R\blJQ<^  
import org.rut.util.algorithm.SortUtil; %ry>p(-pC(  
BgRiJFa.d[  
/** +vuW 9  
* @author treeroot j]P|iL  
* @since 2006-2-2 }}]Y mf  
* @version 1.0 mZ5UaSG  
*/ ug{F?LW[  
public class ImprovedQuickSort implements SortUtil.Sort { ux }DWrR  
ks{s Q@~  
private static int MAX_STACK_SIZE=4096; qg|+BIi Uz  
private static int THRESHOLD=10; t_N `e(V  
/* (non-Javadoc) P~#jvm!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qq/Cn4fN8  
*/ <s:Xj  
public void sort(int[] data) { vxgm0ZOMN  
int[] stack=new int[MAX_STACK_SIZE]; CV6H~t'1  
5x: XXj"  
int top=-1; {> }U>V  
int pivot; upJishy&I  
int pivotIndex,l,r; HaSH0eTw  
9W8Dp?:  
stack[++top]=0; fx|9*|E  
stack[++top]=data.length-1; E|TzrH  
 O~S}u  
while(top>0){ A gPg0(G  
int j=stack[top--]; HqgH\  
int i=stack[top--]; V~wmGp.e  
0eLK9u3<  
pivotIndex=(i+j)/2; B^qB6:\t  
pivot=data[pivotIndex]; UOu&sg*o2B  
J0K"WmW  
SortUtil.swap(data,pivotIndex,j); IIPf5 Z}A  
<(^pHv7Q  
file://partition [q@%)F  
l=i-1; 4EK[gM8  
r=j; P TP2QAt  
do{ BO_^3Me*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }u&JX  
SortUtil.swap(data,l,r); L_~G`Rb3  
} s,RS}ek~|  
while(l SortUtil.swap(data,l,r); 4D13K.h`O  
SortUtil.swap(data,l,j); X}yYBf/R`  
p c],H  
if((l-i)>THRESHOLD){ '3Ri/V,  
stack[++top]=i; .DQ]q o]OG  
stack[++top]=l-1; u *< (B  
} _=] FJhO  
if((j-l)>THRESHOLD){ 5"Yw$DB9  
stack[++top]=l+1; >O _  
stack[++top]=j; 2R!W5gs1<  
} v^tKT&  
#q- _  
} 2KEww3.{  
file://new InsertSort().sort(data); -%.V0=G(Z  
insertSort(data); Ir'f((8:  
} a|NU)mgEI  
/** vpDs5tUl  
* @param data JF gN  
*/ Pz 'Hqvd  
private void insertSort(int[] data) { H #BgE29  
int temp; wOOPWwk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }#J}8.  
} %vXQ Sz  
} d%hA~E1rR  
} A=K1T]o  
=Ug_1w  
} 9o`3g@6z  
~}w 8UO  
归并排序: WQx;tX  
\Hd B   
package org.rut.util.algorithm.support; gL`SZr9  
wNZ7(W.U  
import org.rut.util.algorithm.SortUtil; fsd>4t:" \  
`t6L'%\  
/** R{vPn8X 6g  
* @author treeroot &/9oi_r%r  
* @since 2006-2-2 YqgW8 EM  
* @version 1.0 CvJEY  
*/ \`ReZu$  
public class MergeSort implements SortUtil.Sort{ 3;:V1_JA  
L:-lqag!  
/* (non-Javadoc) U@nwSfp:G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E6M: ^p*<  
*/ Kf#!IY][  
public void sort(int[] data) { W+?[SnHL/  
int[] temp=new int[data.length]; kqw? X{  
mergeSort(data,temp,0,data.length-1); CN(4;-so)  
}  HU9y{H  
/MH@>C _  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ah {pidUx  
int mid=(l+r)/2; <>_Wd AOuD  
if(l==r) return ; ^ {f ^WL=  
mergeSort(data,temp,l,mid); J_ |x^  
mergeSort(data,temp,mid+1,r); KTt$Pt/.  
for(int i=l;i<=r;i++){ (14kR  
temp=data; &tCtCk%{j  
} EG4bFmcs  
int i1=l; !U:s.^{  
int i2=mid+1;  <z2mNq  
for(int cur=l;cur<=r;cur++){ GK?R76d  
if(i1==mid+1) vfJk? (  
data[cur]=temp[i2++]; f*{;\n (.t  
else if(i2>r) v qMk)htIz  
data[cur]=temp[i1++]; :iB%JY Ad  
else if(temp[i1] data[cur]=temp[i1++]; :b*`hWnQ  
else &xroms"S=  
data[cur]=temp[i2++]; myOX:K*  
} ZM`P~N1?)g  
} h\*rv5\M  
~PW}sN6ppG  
} vx}Z  
a<jE 25t  
改进后的归并排序: Z !25xqNCd  
ugCS &  
package org.rut.util.algorithm.support; ANQa2swM  
XW_xNkpL5c  
import org.rut.util.algorithm.SortUtil; qbq<O %g=  
CU1\C*  
/** tr9Y1vxo{  
* @author treeroot <`j[;>O  
* @since 2006-2-2 emY5xZ@N  
* @version 1.0 GL =XiBt  
*/ m2q;^o:J  
public class ImprovedMergeSort implements SortUtil.Sort {  Am%a4{b  
dN\P&"`  
private static final int THRESHOLD = 10; 6+nMH +[  
->2wrOH|H  
/* #C;zS9(]B  
* (non-Javadoc) q\'P1~  
* G q:4rG|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K1/gJ9+(\  
*/ |8qK%n f}  
public void sort(int[] data) { v7<S F  
int[] temp=new int[data.length]; h9BD ^j  
mergeSort(data,temp,0,data.length-1); pG F5aF7T  
} "ex~ LB  
RTgA[O4J  
private void mergeSort(int[] data, int[] temp, int l, int r) { lc3S|4  
int i, j, k; Fwx~ ~"I  
int mid = (l + r) / 2; 5 2@udp  
if (l == r) (\mulj  
return; @Tfwh/UN  
if ((mid - l) >= THRESHOLD) e8ULf~I  
mergeSort(data, temp, l, mid); 4&oXy,8LC  
else vJj:9KcP>h  
insertSort(data, l, mid - l + 1); *pb:9JKi  
if ((r - mid) > THRESHOLD) 3:~l2KIP4  
mergeSort(data, temp, mid + 1, r); 3$$5Mk(&  
else "wF ?Hamz  
insertSort(data, mid + 1, r - mid); x?f0Hk+  
i{|lsd(+  
for (i = l; i <= mid; i++) { ~X~xE]1o|U  
temp = data; OC?Zw@  
} '"xL}8HX}  
for (j = 1; j <= r - mid; j++) { 3b|7[7}&  
temp[r - j + 1] = data[j + mid]; L_Y9+ e  
} jiwpDB&[  
int a = temp[l]; RP~vB#}  
int b = temp[r]; 1!>bhH}{D  
for (i = l, j = r, k = l; k <= r; k++) { /63 W\  
if (a < b) { nIV.9#~&  
data[k] = temp[i++]; 5Cc6 , ]  
a = temp; ~']&.  
} else { } g3HoFC  
data[k] = temp[j--]; d7W%zg\T  
b = temp[j]; J0?$v6S  
} G}=`VYK  
} Wj&<"Z6'm(  
} _&; ZmNNhc  
Y]+e  Df  
/** :SQDqG   
* @param data A$9q!Ui#d  
* @param l <S\;k@f  
* @param i JdaFY+f :  
*/ ",~ b2]ym  
private void insertSort(int[] data, int start, int len) { K,x$c %  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Po Yr:=S?  
} sTKab :  
} xNC* ]8d  
} 5wzQ?07T_  
} ojN`#%X  
#2Ac  
堆排序: s~'9Hv9  
-;+m%"k5  
package org.rut.util.algorithm.support; }x:\69$  
I`/]@BdgY  
import org.rut.util.algorithm.SortUtil; }Q`/K;yq  
q$MHCq;  
/** H,(F1+~d  
* @author treeroot -`-ACWeNV  
* @since 2006-2-2 kj x>  
* @version 1.0 D",A$(lG  
*/ fkW3~b  
public class HeapSort implements SortUtil.Sort{ utq.r_  
rQ=xcn[A  
/* (non-Javadoc) hA@zoIoe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'GrRuT<  
*/ l!\1,J:}Z  
public void sort(int[] data) { uPFRh~ (b  
MaxHeap h=new MaxHeap(); _mw13jcN]  
h.init(data); !-KCFMvT  
for(int i=0;i h.remove(); 2y^U k,g  
System.arraycopy(h.queue,1,data,0,data.length); $ b4*/vMr  
} .H Fc9^.*  
Mg#`t$ u  
private static class MaxHeap{ %'$f ?y  
MO[c0n%  
void init(int[] data){ 7Aqn[1{_O  
this.queue=new int[data.length+1]; )r=9]0=  
for(int i=0;i queue[++size]=data; -y%QRO(  
fixUp(size); ot^q}fRX  
} 6e*%\2UA  
} kl| g  
jz|VF,l  
private int size=0; HB%K|&!+  
6j_ 678  
private int[] queue; 9p5= _  
M/*Bh,M`  
public int get() {  64SW  
return queue[1]; Ih; aBS  
} |0lLl^zp  
^,Lt Ewd~Y  
public void remove() { |ribWCv0  
SortUtil.swap(queue,1,size--); B4@fY  
fixDown(1); \Ps5H5Qk;  
} -=5EbNPwG  
file://fixdown 2_ wv C  
private void fixDown(int k) { JT}.F!q6E  
int j; emA.{cVr!  
while ((j = k << 1) <= size) { 36nyu_h:R  
if (j < size %26amp;%26amp; queue[j] j++; {aoM JJq  
if (queue[k]>queue[j]) file://不用交换 l(#1mY5!q8  
break; 0',[J  
SortUtil.swap(queue,j,k); (nq^\ZdF  
k = j; @$oZ|ZkZ  
} @' d6iYk_  
} w=|py>%  
private void fixUp(int k) { JwB"\&'1ZS  
while (k > 1) { vmLpm xS  
int j = k >> 1; /p,{?~0mj  
if (queue[j]>queue[k]) 7_KXD#  
break; (#If1[L  
SortUtil.swap(queue,j,k); 5?w.rcN[j  
k = j; |U EC  
} Ia#"/`||  
} d+0^u(gc!8  
+mLD/gK`  
} #~S>K3(  
68p R:  
} |kseKZ3  
0yaMe@&,  
SortUtil: x}|+sS,g  
l~ D\;F  
package org.rut.util.algorithm; Z%OW5]q  
{yS;NU`2  
import org.rut.util.algorithm.support.BubbleSort; 7E\g &R.  
import org.rut.util.algorithm.support.HeapSort; uFo/s&6K  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2T?TM! \Q  
import org.rut.util.algorithm.support.ImprovedQuickSort; z&F5mp@  
import org.rut.util.algorithm.support.InsertSort; 7h`^N5H.q  
import org.rut.util.algorithm.support.MergeSort; nA+F  
import org.rut.util.algorithm.support.QuickSort; [~)x<=H8{  
import org.rut.util.algorithm.support.SelectionSort; \7 Gz\=\LR  
import org.rut.util.algorithm.support.ShellSort; 8#l+{`$z  
I0_Ecp  
/** x[x(y{&~  
* @author treeroot c0ZaFJ  
* @since 2006-2-2 lE'wfUb  
* @version 1.0  n}OU Y  
*/ j^nu|  
public class SortUtil { `[Sl1saZ$S  
public final static int INSERT = 1; e2wvc/gG6  
public final static int BUBBLE = 2; h/?6=D{  
public final static int SELECTION = 3; vxVOcO9<  
public final static int SHELL = 4; 9yL6W'B!  
public final static int QUICK = 5; q:]Q% IC^  
public final static int IMPROVED_QUICK = 6; qrE0H  
public final static int MERGE = 7; :c:V%0Yji  
public final static int IMPROVED_MERGE = 8; (NaK3_  
public final static int HEAP = 9; I_>`hTiR  
M1{(OY(G  
public static void sort(int[] data) { CA*~2|  
sort(data, IMPROVED_QUICK); :)4*^a/lC  
} iRt*A6`m+  
private static String[] name={ Y0RgJn  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" EO:avH.*0  
}; ix*muVBj.  
0T9. M(  
private static Sort[] impl=new Sort[]{ 6bL~6-h%)  
new InsertSort(), W.[BPR  
new BubbleSort(), &,MFB  
new SelectionSort(), -_>.f(1  
new ShellSort(), T 6HU*(  
new QuickSort(), Nfb`YU=  
new ImprovedQuickSort(), q qvF-mDN  
new MergeSort(), iLtc HpN  
new ImprovedMergeSort(), <\aU"_D   
new HeapSort() '[ 0YIn  
}; 9g]M4*?C9P  
bE I!Ja  
public static String toString(int algorithm){ : Ss3ck*=  
return name[algorithm-1]; 8x{Hg9  
} %5Rq1$D  
fM ^<+o@  
public static void sort(int[] data, int algorithm) { W[|[;{  
impl[algorithm-1].sort(data); u-.L^!k  
} ~L'nz quF  
/gw Cwyo  
public static interface Sort { GV6mzD@ <  
public void sort(int[] data); m =k%,J_  
} I%xn,u  
&t_h'JX&  
public static void swap(int[] data, int i, int j) { o^GC=Aca`  
int temp = data; SdI1}&  
data = data[j]; k?j Fh6%  
data[j] = temp; Pz`hX$  
} aU(tu2  
} r0btC@Hxy  
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