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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。 ]DU61Z"v?b  
插入排序: )ZN(2z  
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package org.rut.util.algorithm.support; HrDTn&/  
. Jb?]n  
import org.rut.util.algorithm.SortUtil; 2pjW,I!`  
/** 33,;i E  
* @author treeroot h*G#<M  
* @since 2006-2-2 Gj5>Y!9  
* @version 1.0 >j) w\i  
*/ ;{]8>`im&4  
public class InsertSort implements SortUtil.Sort{ joY1(Y  
e"PMvQ  
/* (non-Javadoc) Kc-Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gxo# !  
*/ n+X1AOE[L  
public void sort(int[] data) {  :4{Qh  
int temp; v8>!Gft  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o|0 '0P  
} Vk WO}  
} ]u;GNz}?  
} [4ee <J  
mZ~mf->%  
} z;U LQ  
U%h7h`=F?  
冒泡排序: 70duk:Ri0  
qPqy4V. ;  
package org.rut.util.algorithm.support; aN:HG)$@  
yB=C5-\F  
import org.rut.util.algorithm.SortUtil; v;Swo("  
^g70AqUc  
/** 8g.AT@ ,Q  
* @author treeroot UBL(Nr  
* @since 2006-2-2 IvFR <n  
* @version 1.0 //~POm  
*/ 9jqO/_7R+  
public class BubbleSort implements SortUtil.Sort{ 6aRGG+H  
P$6W`^D Z  
/* (non-Javadoc) 2rF?Q?$,B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4|FRg  
*/ NP$e-" 1  
public void sort(int[] data) { *&(2`#C;  
int temp; `}[VwQ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y+!Ouc!$  
if(data[j] SortUtil.swap(data,j,j-1); \>4v?\8o  
} ^GE^Q\&D&  
} =d}gv6v2S  
} *Yj~]E0`1  
} +:fqL  
5r^1CFO  
} Qk+=znJ  
yI3Q|731)  
选择排序: JL?Cnk$!  
45?*:)l:  
package org.rut.util.algorithm.support; ||yXp2  
R:]/{b4Uq  
import org.rut.util.algorithm.SortUtil; gW'P`Oxw  
uE"5cq'B/  
/** ;R/k2^uF  
* @author treeroot W+8BQ- 2  
* @since 2006-2-2 '$n:CNha  
* @version 1.0 wTB)v!  
*/  CEbzJ   
public class SelectionSort implements SortUtil.Sort { y>>vGU;  
qUifw @  
/* _{lx*dq  
* (non-Javadoc) ;,<r|.6U  
* ".Lhte R?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ay=KfY5  
*/ gCg4;b6g  
public void sort(int[] data) { @YEw^J~  
int temp; g&{gD^9)4  
for (int i = 0; i < data.length; i++) { BPwI8\V  
int lowIndex = i; gsLr=  
for (int j = data.length - 1; j > i; j--) { ov?.:M  
if (data[j] < data[lowIndex]) { I/^q+l.=`{  
lowIndex = j; )w Z49>Y  
} a];BW)  
} cSY2#u|v  
SortUtil.swap(data,i,lowIndex); u(8_[/_B  
} nu;} S!J  
} 30A`\+^f  
#S@UTJa  
} )`B -O::  
-Pqi1pj]  
Shell排序: {z.[tvE8h  
f@wsS m  
package org.rut.util.algorithm.support; &sI,8X2a2  
H(X+.R,Thp  
import org.rut.util.algorithm.SortUtil; /1IvLdPIu  
6.7`0v?,n  
/** &?KPu?9  
* @author treeroot 4C l, Iw/;  
* @since 2006-2-2 o}WB(WsG  
* @version 1.0 I(z>)S'7r  
*/ 9=Y,["br$_  
public class ShellSort implements SortUtil.Sort{ ^t\kLU  
\?bwm&6+r  
/* (non-Javadoc) [ED!J~lg8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B.]qrS|  
*/ 5u'TmLuKT  
public void sort(int[] data) { }s`jl` `PM  
for(int i=data.length/2;i>2;i/=2){ P3+)pOE-SI  
for(int j=0;j insertSort(data,j,i); aeG#: Ln+{  
} ML=hKwCA  
} 9 eSN+q  
insertSort(data,0,1); RnMBGxa  
} "WF( 6z#  
>{O[t2&  
/** l@,);w=_P  
* @param data B]A 5n8<  
* @param j ) 1lJ<g#  
* @param i /W"Bf  
*/ s5c! ^,L8  
private void insertSort(int[] data, int start, int inc) { N,WI{*  
int temp; D< nlb-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); DZHrR:q?e  
} t` }20=I+  
} Gl?P.BCW.&  
} k)H[XpM  
v+xgxQGYH  
} K!IF?iell  
OSSd;ueur$  
快速排序: q`/amI0  
1VhoJGH;C  
package org.rut.util.algorithm.support; IUh5r(d 68  
5en [)3E  
import org.rut.util.algorithm.SortUtil; o~i]W.SI(  
m&Y; /kr  
/** 8CHb~m@^$  
* @author treeroot .nj?;).  
* @since 2006-2-2 Rz<d%C;R  
* @version 1.0 A2g"=x[1@K  
*/ l%sp[uqcg  
public class QuickSort implements SortUtil.Sort{ {ED(O -W  
5]4<!m  
/* (non-Javadoc) s`8M%ZLu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OYqYI!N/  
*/ "C$!mdr7  
public void sort(int[] data) { 09}f\/  
quickSort(data,0,data.length-1); $\YLmG  
} cCo07R  
private void quickSort(int[] data,int i,int j){ GW>7R6i  
int pivotIndex=(i+j)/2; Gt\K Ln  
file://swap /RA1d<~$q  
SortUtil.swap(data,pivotIndex,j); ]wkSAi5z*  
'8r8 ^g[  
int k=partition(data,i-1,j,data[j]); dO 1-c`  
SortUtil.swap(data,k,j); 88tFB  
if((k-i)>1) quickSort(data,i,k-1); ()@.;R.Z  
if((j-k)>1) quickSort(data,k+1,j); {V]Qwz)1  
?)Czl4J  
} RE`J"&  
/** AiyvHt  
* @param data } #\;np  
* @param i lRF_ k  
* @param j h}anTFKP  
* @return jm#d7@~4  
*/ 5`{|[J_[  
private int partition(int[] data, int l, int r,int pivot) { s0XRL1kWr  
do{  Vq .!(x  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);  `5k6s,  
SortUtil.swap(data,l,r); p0[,$$pM  
} h9Tf@]W   
while(l SortUtil.swap(data,l,r); O]Ry3j  
return l; L#7)X5a__  
} 7U{b+=,wK  
G!e}j @@  
} -~<q,p"e  
6PzN>+t^y  
改进后的快速排序: 7kX7\[zN  
aiR|.opIb  
package org.rut.util.algorithm.support; ~*' 8=D?)  
}GoOE=rhY  
import org.rut.util.algorithm.SortUtil; \c9t]py<.h  
VHgF#6'   
/** 9p[W :)P4d  
* @author treeroot (}~eD  
* @since 2006-2-2 Wy^[4|6  
* @version 1.0 YA;8uMqh;  
*/ '.h/Y/oz  
public class ImprovedQuickSort implements SortUtil.Sort { G7/?hky 0.  
zNsL^;uT  
private static int MAX_STACK_SIZE=4096; ?9('o\N:  
private static int THRESHOLD=10; 2=Y_Qrhi  
/* (non-Javadoc) +4:+qGAJ{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j6R{  
*/ :i,c<k  
public void sort(int[] data) { ;GSFQ:m[  
int[] stack=new int[MAX_STACK_SIZE]; #o r7T^  
7u`}t83a  
int top=-1; #hE3~+ i  
int pivot; o$blPTN  
int pivotIndex,l,r; ,I2re G  
jC/JiI  
stack[++top]=0; 3U9+l0mBa  
stack[++top]=data.length-1; od5w9E.  
:LIKp;  
while(top>0){ l6`d48U  
int j=stack[top--]; 2;?wN`}5g=  
int i=stack[top--]; 3ciVjH>i  
7ck0S+N'b  
pivotIndex=(i+j)/2;  +s R *d  
pivot=data[pivotIndex]; o wpJ7S1~  
#`vGg9  
SortUtil.swap(data,pivotIndex,j); ILr6W@o5A  
^pQ;0[9Y0  
file://partition vn%U;}  
l=i-1; h[`Op#^x3  
r=j; C(t6;&H  
do{ ^d5./M8Bd  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7]. IT(  
SortUtil.swap(data,l,r); eZ.0,A*1B1  
} MY<!\4/  
while(l SortUtil.swap(data,l,r); AXU!-er$  
SortUtil.swap(data,l,j); Acq>M^E3  
^0ZKHR(}e  
if((l-i)>THRESHOLD){ j=jrzG+`  
stack[++top]=i; HyX4ob[X  
stack[++top]=l-1; eR* ]<0=  
} #`#aSqGmc  
if((j-l)>THRESHOLD){ dW^_tzfF7  
stack[++top]=l+1; oIL+@}u7  
stack[++top]=j; qiKtR  
} 5.K$ X$+7}  
^`>Ysc(@&  
} zWmo OnK  
file://new InsertSort().sort(data); w`#0 Y9O  
insertSort(data); m/F(h-?  
} Zz)oMw  
/** \I,Dje/:w  
* @param data g 2 { ?EP  
*/ i;'X}KW  
private void insertSort(int[] data) { ZhbY, wJ,  
int temp; p4t!T=o/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^a#&wW  
} Q0"F> %Cn  
} fddbXs0Sn  
} QWW7I.9r  
(Q]Y> '  
} p|9ECdU>;  
dG~B3xg;5i  
归并排序: ??%T  
~ %YTJS  
package org.rut.util.algorithm.support; >->xhlL*  
>*i8RqU  
import org.rut.util.algorithm.SortUtil; #2vG_B<M)  
!lN a`  
/** ?nGf Wx^  
* @author treeroot %:;[M|.  
* @since 2006-2-2 v^18o$=K",  
* @version 1.0 I'%H:53^0  
*/ rPGE-d3  
public class MergeSort implements SortUtil.Sort{ O<d?'{  
vb ^!(  
/* (non-Javadoc) }`/n2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .6Lhy3x  
*/ 59NWyi4i  
public void sort(int[] data) { wZ3 vF)2s  
int[] temp=new int[data.length]; F']%q 0  
mergeSort(data,temp,0,data.length-1); U;Y}2  
} aj'8;E+  
}L7F g%,  
private void mergeSort(int[] data,int[] temp,int l,int r){ J'^$|/Q  
int mid=(l+r)/2; yJ`1},^  
if(l==r) return ; j!_^5d#d  
mergeSort(data,temp,l,mid); *(q8?x0>  
mergeSort(data,temp,mid+1,r);  q>.t~  
for(int i=l;i<=r;i++){ TYS\:ZdXF  
temp=data; HYYx*CJ)  
} [#rdfN'?U  
int i1=l; eKFc W5O  
int i2=mid+1; (xSi6EZ6;  
for(int cur=l;cur<=r;cur++){ 8qYGlew,  
if(i1==mid+1) %b%<g%@i  
data[cur]=temp[i2++]; i~s9Ot  
else if(i2>r) mhkAI@)>  
data[cur]=temp[i1++]; +xdFkc  
else if(temp[i1] data[cur]=temp[i1++]; ,, #rv-*  
else `::'UfHc  
data[cur]=temp[i2++]; YM.IRj2/1  
} /R$x-7t)^(  
} sS2E8Z2  
7(USp#"  
} d8 Nh0!  
O+Lb***b"  
改进后的归并排序: 5b4V/d* '  
. .je<   
package org.rut.util.algorithm.support; H{Y=&#%d  
#\ S$$gP  
import org.rut.util.algorithm.SortUtil; Q;,3W+(  
70*iJ^|  
/** U <$xp  
* @author treeroot nV xMo_  
* @since 2006-2-2 ^8*SCM_A  
* @version 1.0 s!fY^3  
*/ S9#N%{8P  
public class ImprovedMergeSort implements SortUtil.Sort { [W;dguh  
QOy&!6  
private static final int THRESHOLD = 10; z.Kq}r^  
wp GnS  
/* Rf0\CEc  
* (non-Javadoc) JEF7hJz~  
* YM* 6W?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '2J6%Gg  
*/ QV7c9)<]'}  
public void sort(int[] data) { o@`E.4  
int[] temp=new int[data.length]; _@;3$eB  
mergeSort(data,temp,0,data.length-1); XoiYtx53  
} /F}\V ^  
^PR,TR.  
private void mergeSort(int[] data, int[] temp, int l, int r) { @ZPTf>J}  
int i, j, k; k^\ &.63(  
int mid = (l + r) / 2; 3udIe$.Q  
if (l == r) JG4*B|3  
return; 8+cpNX  
if ((mid - l) >= THRESHOLD) ` +UMZc  
mergeSort(data, temp, l, mid); y-q?pqt  
else o9d$ 4s@/  
insertSort(data, l, mid - l + 1); ;Hp'x_xQ  
if ((r - mid) > THRESHOLD) *vE C,)  
mergeSort(data, temp, mid + 1, r); TY[d%rMm  
else LU7)F,ok  
insertSort(data, mid + 1, r - mid); A.x}%v,E  
v]SE?xF{U  
for (i = l; i <= mid; i++) { 6$<o^Ha*R  
temp = data; ,fJ(.KI0  
} WB [G!'  
for (j = 1; j <= r - mid; j++) { YaT+BRh?  
temp[r - j + 1] = data[j + mid]; 'wnY>hN  
} O36r ,/X  
int a = temp[l]; C|@k+^S  
int b = temp[r]; Z?aR9OTP  
for (i = l, j = r, k = l; k <= r; k++) {  CF92AY  
if (a < b) { `'.x*MNF  
data[k] = temp[i++]; <n#V  
a = temp; TZyQOjUu  
} else { XJ/ kB8  
data[k] = temp[j--]; rw0lXs#K<E  
b = temp[j]; d;:&3r|X  
} lBZ*G  
} nGgc~E$j  
} A1}+j-D7!y  
.FRF<_`^  
/** Vzm+Ew _  
* @param data h`rjDd  
* @param l W&f Py%g  
* @param i IX?%H!i  
*/ <+,0 G`  
private void insertSort(int[] data, int start, int len) { VCRv(Ek  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); tsVhPo]e0  
} cB=u;$k@*  
} hdqls0 r  
} wO)KQ~yX  
} 8'Bl=C|0X  
oySM?ZE  
堆排序: ;rAW3  
x i,wL0{  
package org.rut.util.algorithm.support; ,O{ 5   
2e@\6l,!^  
import org.rut.util.algorithm.SortUtil; j|dzd<kE6  
IqKXFORiNI  
/** pv SFp-:_  
* @author treeroot o`! :Q!+  
* @since 2006-2-2 Fe< t@W  
* @version 1.0 JlGD.!`  
*/ 7]zZh a4X  
public class HeapSort implements SortUtil.Sort{ 5mVu]T`  
F <Z=%M3e  
/* (non-Javadoc) $KHDS:&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t3JPxg]0k'  
*/ Y!$ z7K  
public void sort(int[] data) { y'/9KrV T  
MaxHeap h=new MaxHeap(); )p9n|C  
h.init(data); Jo+C!kc  
for(int i=0;i h.remove(); 3h4"Rv=,  
System.arraycopy(h.queue,1,data,0,data.length); 5D*V%v  
} 1*b%C"C  
*3Z#r  
private static class MaxHeap{ 1V?)zp  
PQ]N>'v-  
void init(int[] data){ ITUl -L4xE  
this.queue=new int[data.length+1]; &r!>2$B\  
for(int i=0;i queue[++size]=data; Kp;o?5H  
fixUp(size); jzMGRN/67  
} JdEb_c3S  
} =K8h)B_g  
`"Pd$jW  
private int size=0; z# B) b5  
KrH ;o)|  
private int[] queue; CFxs`C^  
j,jUg}b  
public int get() { G[,VPC=  
return queue[1]; S3cQC`^  
} !iqz 4E  
+?tNly`  
public void remove() { CP^^ct-C  
SortUtil.swap(queue,1,size--); v*v&f!Ym&s  
fixDown(1); k{62UaL.  
} omP 7|  
file://fixdown VZR6oia  
private void fixDown(int k) { "&F/'';0}E  
int j; Xw)+5+t"{  
while ((j = k << 1) <= size) { rt z(Jt{<  
if (j < size %26amp;%26amp; queue[j] j++; (@9}FHJzi  
if (queue[k]>queue[j]) file://不用交换 GvY8O|a  
break; [MG:Ym).2`  
SortUtil.swap(queue,j,k); p9J(,}  
k = j; 4esf&-gG  
} %## bg<  
} b-XBs7OAx  
private void fixUp(int k) { H]\H'r"  
while (k > 1) { uIBV1Qz  
int j = k >> 1; S1JB]\  
if (queue[j]>queue[k]) on|>"F`pb  
break; de[_T%A  
SortUtil.swap(queue,j,k); #=rI[KI  
k = j; $ a7^3  
} hQO~9mQ+!  
} >n/QKFvV5  
+H_Z!T.@  
} nS#;<p$\  
X8<ygci+.5  
} '1aOdEZA*  
0vEa]ljS  
SortUtil: ;x"B ):?\  
1L ow[i  
package org.rut.util.algorithm; z$A5p4=B'^  
SBA;p7^"  
import org.rut.util.algorithm.support.BubbleSort; E#OKeMK  
import org.rut.util.algorithm.support.HeapSort; Z1zC@z4sUj  
import org.rut.util.algorithm.support.ImprovedMergeSort; I| hG"i  
import org.rut.util.algorithm.support.ImprovedQuickSort; =`")\?z}  
import org.rut.util.algorithm.support.InsertSort; 42~;/4  
import org.rut.util.algorithm.support.MergeSort; hLF@'ln  
import org.rut.util.algorithm.support.QuickSort; LT!4pD:a  
import org.rut.util.algorithm.support.SelectionSort; 'tc$#f^:  
import org.rut.util.algorithm.support.ShellSort; $xqphhBg  
F-t-d1w6  
/** ~ lS3+H  
* @author treeroot M II]sF  
* @since 2006-2-2 &fWZ%C7|jC  
* @version 1.0 71eD~fNdx  
*/ azSS:=A  
public class SortUtil { uG<+IT|x  
public final static int INSERT = 1; g.'4uqU  
public final static int BUBBLE = 2; #~Q0s)Ze  
public final static int SELECTION = 3; KW)yTE<  
public final static int SHELL = 4; VrDvd  
public final static int QUICK = 5; ) Ez=#dIq  
public final static int IMPROVED_QUICK = 6; zuOIos  
public final static int MERGE = 7; %u#pl=k}  
public final static int IMPROVED_MERGE = 8; ,}<v:!  
public final static int HEAP = 9; /#HY-b  
!&X}? NK  
public static void sort(int[] data) { L/shF}<  
sort(data, IMPROVED_QUICK); ,Tpds^  
} $W)FpN;CW/  
private static String[] name={ ?mMd6U&J  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7be?=c)+"  
}; vwg\qKqSM  
6Rso}hF}}  
private static Sort[] impl=new Sort[]{ V%+KJ}S!Z  
new InsertSort(), FD8aO?wvg  
new BubbleSort(), E+_ }8J .  
new SelectionSort(), "8N]1q:$4  
new ShellSort(), -?ip?[Z  
new QuickSort(), 5p750`n  
new ImprovedQuickSort(), dW91nTQ:  
new MergeSort(), }=++Lr4*  
new ImprovedMergeSort(), m{' q(w}  
new HeapSort() Z#0z#M`  
}; e3[N#ryt  
'tOo0Zgc  
public static String toString(int algorithm){ StE4n0V  
return name[algorithm-1]; UJQ!~g.y]  
} n1v%S"^  
1m&(3% #{  
public static void sort(int[] data, int algorithm) { UrgvG, Lt  
impl[algorithm-1].sort(data); }/6jom9U?  
} Tf+B<B:  
&iuc4"'  
public static interface Sort { ,Ti#g8j  
public void sort(int[] data); .NabK  
} U7Ps2~x3  
^ c:(HUo#  
public static void swap(int[] data, int i, int j) { \jC}>9  
int temp = data; k38Ds_sW6d  
data = data[j]; o rEo$e<  
data[j] = temp; b afYjF< 3  
} P /Js!e<\  
} RS$e^_W  
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