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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。 %f*8JUE16  
插入排序: VNp[J'a>VZ  
#JWW ;M6F  
package org.rut.util.algorithm.support; SdeKRZ{o  
S)>L 0^M1  
import org.rut.util.algorithm.SortUtil; F $^RM3  
/** \h!%U*!7{  
* @author treeroot )4bBR@QM  
* @since 2006-2-2 5.q2<a :  
* @version 1.0 6`J*{%mP  
*/ &&nvv&a  
public class InsertSort implements SortUtil.Sort{ L 1H!o!*  
si.ZTG9m  
/* (non-Javadoc) .-awl1 W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tuo`>ZA  
*/ F;kY5+a7~e  
public void sort(int[] data) { J NPEyC  
int temp; |k\4\a Lj  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $BXZFC_1S  
} LPc)-t|p"  
} ;}@.E@s%'  
} nQy.?*X  
!KKkw4  
} iVTC"v  
ZX'q-JUv f  
冒泡排序: ? %XTD39  
1hp`.!3]H  
package org.rut.util.algorithm.support; 3LN+gXmU  
'y[74?1  
import org.rut.util.algorithm.SortUtil; BiT #bg  
^~9fQJNs  
/** PV$)k>H-  
* @author treeroot ]V0V8fU|  
* @since 2006-2-2 z6)b XL[f  
* @version 1.0 mvgsf(a*'  
*/ #.L9/b(  
public class BubbleSort implements SortUtil.Sort{ 4'upbI  
|;sL*Vr  
/* (non-Javadoc) 3q ujz)o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UTB]svC'  
*/ p!B& &)&db  
public void sort(int[] data) { 1yC_/Va1  
int temp; ]^:sV)  
for(int i=0;i for(int j=data.length-1;j>i;j--){ v3O+ ;4  
if(data[j] SortUtil.swap(data,j,j-1); C@d*t?  
} ~tx|C3A`d  
} QOiPDu=8z  
} /S2lA>  
} -Pt.  
|ecK~+  
} VaP9&tWXj  
nilis-Bk_  
选择排序: 3r^Ls[ey  
$~7uDq  
package org.rut.util.algorithm.support; 2qd5iOhX+  
dhrh "x_?:  
import org.rut.util.algorithm.SortUtil; & pHSX  
@=_4i&]$  
/** Y*VF1M,2_  
* @author treeroot *.%z  
* @since 2006-2-2 HQ /D)D  
* @version 1.0 43wm_4C!H  
*/ mR,w~wP  
public class SelectionSort implements SortUtil.Sort { Fi+8|/5  
!0-KB#  
/* 5PY4PT=G  
* (non-Javadoc) C)UL{n  
* B(|*u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RN^<bt{_U  
*/ #`]`gNB0Yg  
public void sort(int[] data) { ,3XlX(P  
int temp; i%@blz:_Y  
for (int i = 0; i < data.length; i++) { A@uU*]TqJ8  
int lowIndex = i; n(uzqd  
for (int j = data.length - 1; j > i; j--) { 0oK_uY 4g  
if (data[j] < data[lowIndex]) { e5AZU7%.  
lowIndex = j; kB` @M>[  
} h;Hg/jv  
} dNu?O>=  
SortUtil.swap(data,i,lowIndex); bv^wE,+?o  
} s(Y2]X4 (  
} *82+GY]  
gV}c4>v(  
} V15/~  
LZtO Q__B)  
Shell排序: shgZru  
^HhV ?Iqg  
package org.rut.util.algorithm.support; ~xLo0EV "  
2P/ Sq  
import org.rut.util.algorithm.SortUtil; 8]K+,0m6  
2c*w{\X  
/** iE0x7x P_  
* @author treeroot IM$ d~C  
* @since 2006-2-2 3xk- D &"  
* @version 1.0 r>#4Sr  
*/ cYgd1  
public class ShellSort implements SortUtil.Sort{ U?%T~!  
4|&_i)S-Y  
/* (non-Javadoc) gy1R.SN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *(s0X[-  
*/ 6&+}Hhe  
public void sort(int[] data) { p;qFMzyS9  
for(int i=data.length/2;i>2;i/=2){ DH7]TRCMZ)  
for(int j=0;j insertSort(data,j,i); Nwj M=GG  
} llN/  
} 5g%D0_e5  
insertSort(data,0,1); -FF#+Z$  
} @Q7^caG  
C#V_Gb  
/** \JC_"gqt  
* @param data c|@OD3w2lM  
* @param j EQe$~}[  
* @param i ZkWMo= vL  
*/ -_xTs(;|8  
private void insertSort(int[] data, int start, int inc) { $O&N  
int temp; 27i-B\r  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); NFyV02.  
} #eF,* d  
} ]s0GAp"  
} }vU^g PH  
bXvriQ.UH  
} %ikPz~(  
iSX HMp4V  
快速排序: 2Lytk OMf  
f9OY> |a9  
package org.rut.util.algorithm.support; Z`f?7/"B  
8>G5VhCm~o  
import org.rut.util.algorithm.SortUtil;  f,kV  
DQ}&J  
/** :]4s;q:m  
* @author treeroot #)m [R5g(  
* @since 2006-2-2 aTfc>A;  
* @version 1.0 @HTs.4  
*/ # F6<N]i  
public class QuickSort implements SortUtil.Sort{ Lxn-M5RPQ  
He$v '87]  
/* (non-Javadoc) L8f_^ *,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M;W&#Fz%  
*/ KzX)6 |g{"  
public void sort(int[] data) { A8QUfg@uK~  
quickSort(data,0,data.length-1); ~c5 5LlO>  
} lKf kRyO_S  
private void quickSort(int[] data,int i,int j){ Xg l %2'  
int pivotIndex=(i+j)/2; _>)@6srC  
file://swap ?&!!(dWFH  
SortUtil.swap(data,pivotIndex,j); j+>[~c;0)  
qY!LzKM0  
int k=partition(data,i-1,j,data[j]); :#\jx  
SortUtil.swap(data,k,j); q,_E HPc  
if((k-i)>1) quickSort(data,i,k-1); EuA352x  
if((j-k)>1) quickSort(data,k+1,j); m<LzgX  
@My RcC  
} aO}p"-'  
/** +K8T%GAr  
* @param data P8H2v_)X&  
* @param i GY5JPl  
* @param j 1NG[   
* @return <IBUl}|\  
*/ Ted tmX$  
private int partition(int[] data, int l, int r,int pivot) { zsj]WP6 j  
do{ s0CDp"uJY  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )Jw$&%/{1  
SortUtil.swap(data,l,r); ~]Av$S  
} +;)Xu}  
while(l SortUtil.swap(data,l,r); KZ1m 2R}'  
return l; RQu[FZT,  
} t8;nP[`  
DjiI*HLNR  
} !HtW~8|:  
dj4a)p|YN  
改进后的快速排序: {d0 rUHP  
l)~$/#k  
package org.rut.util.algorithm.support; I.>8p]X  
XWX]/j2jA  
import org.rut.util.algorithm.SortUtil; E$A=*-u  
IL uQf-  
/** 5|`./+Ghk  
* @author treeroot loHMQKy@  
* @since 2006-2-2 ^rO!-  
* @version 1.0 Zlt,Us`  
*/ )3V1aC  
public class ImprovedQuickSort implements SortUtil.Sort {  @k#xr  
{qU;>;(  
private static int MAX_STACK_SIZE=4096; %Na` \`L{F  
private static int THRESHOLD=10; ~]9EhC'l  
/* (non-Javadoc) s$lJJL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DeeV;?:  
*/ bj_/  
public void sort(int[] data) { PsS.lhj0"  
int[] stack=new int[MAX_STACK_SIZE]; YY$Z-u(  
 tO D}&  
int top=-1; R((KAl]dL  
int pivot; AM#s2.@  
int pivotIndex,l,r; kbbHa_;aqV  
l1 _"9a%H  
stack[++top]=0; C*1 1?B[  
stack[++top]=data.length-1; b `}hw"f  
Bt1v7M  
while(top>0){ u6:$AA  
int j=stack[top--]; cK\?wZ| Y  
int i=stack[top--]; -D1 A  
o{l]n*  
pivotIndex=(i+j)/2; |TF6&$>d  
pivot=data[pivotIndex]; oh9L2"  
Qw"%Xk  
SortUtil.swap(data,pivotIndex,j); ZsYY)<n  
YM.  
file://partition uu>R)iTQ%S  
l=i-1; x cZF_elt7  
r=j; 9A|9:OdG1  
do{ Sw?EF8}[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3a}c'$F>_'  
SortUtil.swap(data,l,r); WD*z..`  
} ZXIz.GFy+  
while(l SortUtil.swap(data,l,r); THgEHR0,}[  
SortUtil.swap(data,l,j); ~~m(CJ4S  
5aXE^.`  
if((l-i)>THRESHOLD){ ZqjLZ9?q  
stack[++top]=i; d7:=axo,  
stack[++top]=l-1; m6A\R KJ'  
} b?, =|H  
if((j-l)>THRESHOLD){ ZG~d<kM&8s  
stack[++top]=l+1; am7~  
stack[++top]=j; [F{P0({%?  
} kP^=  
U8,pe;/ln`  
} ep*8*GmP  
file://new InsertSort().sort(data); kQn}lD  
insertSort(data); l|;]"&|_]c  
} h2i1w^f  
/** 1S yG  
* @param data [h8macx  
*/ }'n]C|gZ  
private void insertSort(int[] data) { A5_r(Z-5  
int temp;  [ A 7{}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K}'?#a(aX=  
} Dz8aJ6g  
} 'q@vTM'-  
} J=HN~B1  
'T;;-M3*  
} -MFePpUt  
J6<O|ng::  
归并排序: ksUF(lYk  
3UUN@Tx  
package org.rut.util.algorithm.support; WF2t{<]^e  
}XqC'z  
import org.rut.util.algorithm.SortUtil; J@#rOOu  
tZu1jBO_Q4  
/** GR_caP  
* @author treeroot %joU}G;"  
* @since 2006-2-2 =hY/Yr%P  
* @version 1.0 uf"(b"N0  
*/ 'u d[#@2  
public class MergeSort implements SortUtil.Sort{ io@f5E+?  
wzBw5n f\  
/* (non-Javadoc) wyXQP+9G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J"TF@7{p  
*/ bfy=  
public void sort(int[] data) { x0)WrDb  
int[] temp=new int[data.length]; % iZM9Q&NC  
mergeSort(data,temp,0,data.length-1); aK 3'u   
} tf[)| /M  
G&"O)$h  
private void mergeSort(int[] data,int[] temp,int l,int r){ p./0N.  
int mid=(l+r)/2; pbw{EzM  
if(l==r) return ; 7:<A_OLi  
mergeSort(data,temp,l,mid); {Byh:-e<  
mergeSort(data,temp,mid+1,r); ;k ,@^f8  
for(int i=l;i<=r;i++){ :\y' ?d- Q  
temp=data; H8 xhE~'t  
} `PSjk F(  
int i1=l; qwO@>wQ}~  
int i2=mid+1; NFR>[L V  
for(int cur=l;cur<=r;cur++){ h[Uo6`  
if(i1==mid+1) ,i8%qm8  
data[cur]=temp[i2++]; 5G$5d:[(  
else if(i2>r) .8T0OQ4  
data[cur]=temp[i1++]; G\B+bBz  
else if(temp[i1] data[cur]=temp[i1++]; 4IvT}Us#+  
else 7R# }AQ   
data[cur]=temp[i2++]; W+$G{XSr5C  
} =G" ney2  
} o?6m/Klw6  
=itQ@ ``r  
} 8m=O408Q  
 WjCxTBI  
改进后的归并排序: AWKJ@&pA9m  
ou- uZ"$,c  
package org.rut.util.algorithm.support; ={+8jQqi1  
-3guuT3x\  
import org.rut.util.algorithm.SortUtil; "?<h,Hvi  
w~ON861  
/** CPMGsW^  
* @author treeroot YPf?  
* @since 2006-2-2 ]vP}K   
* @version 1.0 h72CGA|  
*/ Vu=/<;-N  
public class ImprovedMergeSort implements SortUtil.Sort { | L1+7  
'+27_j  
private static final int THRESHOLD = 10; qZ&~&f|>e  
0!7p5  
/* Z# bO}!  
* (non-Javadoc) yMTO5~U{  
* YRFz ]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4e#$ -V   
*/ 2#r4dr0  
public void sort(int[] data) { k ~ByICE  
int[] temp=new int[data.length]; T~(Sc'8  
mergeSort(data,temp,0,data.length-1); 9dBxCdpu  
} [uLs M<C  
h /^bRs`;  
private void mergeSort(int[] data, int[] temp, int l, int r) { Qh(X7B  
int i, j, k; ~!!| #A)W  
int mid = (l + r) / 2; $LFL4Q  
if (l == r) r[H8;&EL  
return; g\ vT7x  
if ((mid - l) >= THRESHOLD) 8W?dWj  
mergeSort(data, temp, l, mid); *8/Xh)B;  
else  J}:.I>  
insertSort(data, l, mid - l + 1); ~~ rR< re  
if ((r - mid) > THRESHOLD) -!:5jfT"  
mergeSort(data, temp, mid + 1, r); /:' >-253  
else V?1 $H  
insertSort(data, mid + 1, r - mid); -p.\fvip  
_Uq' N0U  
for (i = l; i <= mid; i++) { n=vDEX:'  
temp = data; %&| uT  
} bAGKi.  
for (j = 1; j <= r - mid; j++) { LzNfMvh  
temp[r - j + 1] = data[j + mid]; %.<_+V#h  
} %dFJ'[jDL  
int a = temp[l]; 5;UIz@BJ  
int b = temp[r]; }: HG)V  
for (i = l, j = r, k = l; k <= r; k++) { ;54NQB3L  
if (a < b) { ,_I rE  
data[k] = temp[i++]; ~<m^  
a = temp; _y_}/  
} else { ]A'{DKR  
data[k] = temp[j--]; ?<TJ}("/  
b = temp[j]; MQ-u9=ys  
} R[ a-"  
} -}|L<~  
} V0>X2&.A  
6FA+q YSV  
/** T8x)i\<  
* @param data gHrs|6q9  
* @param l 7v ZD  
* @param i q"u,Tnc;  
*/ H@=oVyn/  
private void insertSort(int[] data, int start, int len) { 10Ik_L='  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >.d/@3 '  
} w`)5(~b  
} ew~Z/ A   
} hul,Yd) Z  
} &v{#yzM  
)8@-  
堆排序: F@i >l{C  
73;Y(uh9  
package org.rut.util.algorithm.support; -3{Q`@F  
^v'kEsE^*  
import org.rut.util.algorithm.SortUtil; J:yv82  
r exv)!J  
/** d m8t ~38  
* @author treeroot 9\_AB.Z:  
* @since 2006-2-2 .N X9A b  
* @version 1.0 mqZH<.mn  
*/ .Vbd-jr'M  
public class HeapSort implements SortUtil.Sort{ |LZ;2 i  
>GGM76vB=,  
/* (non-Javadoc) PR%)3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (,U|H`  
*/ yE8D^M|g  
public void sort(int[] data) { )QE6X67i  
MaxHeap h=new MaxHeap(); xE:jcA d$}  
h.init(data);  J=` 8  
for(int i=0;i h.remove(); NfV|c~?d  
System.arraycopy(h.queue,1,data,0,data.length); n/_q  
} W"c\/]aD  
~T_|?lU`R  
private static class MaxHeap{ $hhXsu=  
lL)f-8DX  
void init(int[] data){ J4T"O<i$58  
this.queue=new int[data.length+1]; :#YC_ id  
for(int i=0;i queue[++size]=data; Y) sB]!hx  
fixUp(size); rl|'.~mc  
} ^4n#''wJ  
} 0/R;g~q@  
^ Ps!  
private int size=0; ``l*;}  
[c,V=:Cq  
private int[] queue; //63|;EEkl  
wN[lC|1c  
public int get() { 1>Sfv|ZP,  
return queue[1]; %1i:*~g  
} :uCwWv   
syl7i>P  
public void remove() { pJHdY)Cz  
SortUtil.swap(queue,1,size--); }yT/UlU  
fixDown(1); I$; `^z  
} 6Z_V,LD9L  
file://fixdown L$PbC!1  
private void fixDown(int k) { 05wkUo:9  
int j; !n-Sh<8  
while ((j = k << 1) <= size) { ]o] VS  
if (j < size %26amp;%26amp; queue[j] j++; AU9C#;JD  
if (queue[k]>queue[j]) file://不用交换 "'v+*H 3  
break; * :L"#20:R  
SortUtil.swap(queue,j,k); \!^=~` X-  
k = j; 2.^{4 1:  
} |S8$NI2  
} z*},N$2=  
private void fixUp(int k) { qyRN0ZB"A^  
while (k > 1) { "@G[:(BoB<  
int j = k >> 1; [icD*N<Gc  
if (queue[j]>queue[k]) UT3Fi@  
break; @aS)=|Ls\  
SortUtil.swap(queue,j,k); 9lq5\ tL-  
k = j; |=q~X}DA  
} +R*DE5dz  
} q1rj!7  
$FPq8$V  
} l#[Z$+!09  
IHEbT   
} #L.,aTA<  
(G|!{  
SortUtil: O\<zQ2m  
Qz@_"wm[  
package org.rut.util.algorithm; if&bp ,  
?M:>2wl  
import org.rut.util.algorithm.support.BubbleSort;  /b=C  
import org.rut.util.algorithm.support.HeapSort; fw&*;az  
import org.rut.util.algorithm.support.ImprovedMergeSort; 9 dNB _  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7T/BzXr,B  
import org.rut.util.algorithm.support.InsertSort; BH'*I yv  
import org.rut.util.algorithm.support.MergeSort; v]SxZLa  
import org.rut.util.algorithm.support.QuickSort; *O[/KR%  
import org.rut.util.algorithm.support.SelectionSort; *EuX7LEu_  
import org.rut.util.algorithm.support.ShellSort; p$,G`'l  
iZNS? ^U  
/** 8&EJ. CQ  
* @author treeroot =q VT  
* @since 2006-2-2 4. R(`#f  
* @version 1.0 |Ahf 01  
*/ 1{N+B#*<[X  
public class SortUtil { uB)q1QQsqp  
public final static int INSERT = 1; &5y  
public final static int BUBBLE = 2; L-(bw3Yr>  
public final static int SELECTION = 3; nXn@|J&z~U  
public final static int SHELL = 4; Phi5;U!  
public final static int QUICK = 5; v*V( hMy  
public final static int IMPROVED_QUICK = 6; Rrh6-]A  
public final static int MERGE = 7; eKOEOm+  
public final static int IMPROVED_MERGE = 8; Fv]6 a n.  
public final static int HEAP = 9; l 73% y  
O84:ejro  
public static void sort(int[] data) { _#V&rY&@  
sort(data, IMPROVED_QUICK); K/zb6=->  
} t"B3?<?]  
private static String[] name={ G_1r&[N3  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" E_~e/y"-  
}; bD{tsxm[9  
?7fqWlB  
private static Sort[] impl=new Sort[]{ 4~Qnhv7  
new InsertSort(), y#a,d||N1  
new BubbleSort(), 8gavcsVE[  
new SelectionSort(), 0U7Gl9~  
new ShellSort(), [~8U],?1  
new QuickSort(), 'd2 :a2C]  
new ImprovedQuickSort(), <TVJ9l  
new MergeSort(), X| \`\[  
new ImprovedMergeSort(), :;_}Gxx  
new HeapSort() B& @ pZYl  
}; 81E EYf  
,f^fr&6jb  
public static String toString(int algorithm){ v7pu  
return name[algorithm-1]; (kR NqfX  
} Z7bJ<TpZ  
?wHhBh-Q  
public static void sort(int[] data, int algorithm) { 85!]N F  
impl[algorithm-1].sort(data); 7RDmvWd-'?  
} H{n:R *  
rQl9SUs  
public static interface Sort { d0B`5#4  
public void sort(int[] data); Y$>NsgQn6  
} <-.@,HQ+  
sl-wNIQ  
public static void swap(int[] data, int i, int j) { ]r#b:W\  
int temp = data; i[[.1MnS  
data = data[j]; (nO2+@ !  
data[j] = temp; E"'u2jEG^  
} -Kg.w*\H7/  
} aB6/-T+ u  
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