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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。 Lddk:u&J  
插入排序: un&Z' .   
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package org.rut.util.algorithm.support; $-=QTX  
QE#Ar8tU  
import org.rut.util.algorithm.SortUtil; G1!yPQa7d  
/** 8V08>M  
* @author treeroot dF`\ewRFn  
* @since 2006-2-2 m|CB')  
* @version 1.0 pA%Sybw+  
*/ z_ 01*O  
public class InsertSort implements SortUtil.Sort{ <*Ex6/j  
2#XYR>[  
/* (non-Javadoc) v/s6!3pnl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6-+q3#e  
*/ 2 omKP,9,2  
public void sort(int[] data) { Sc?UjEs  
int temp; O'WB O"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /A4^l]H;+3  
} KJs/4oR;  
} `"-ln'nw  
} 8M~^/Zc  
f ecV[  
} |Y9mre.Y;  
k%gO  
冒泡排序: %77X/%.Y  
>Av[`1a2F  
package org.rut.util.algorithm.support; Jfe<$-$$7  
K.R4.{mo  
import org.rut.util.algorithm.SortUtil; Hd8 O3_5  
jMAZ4M  
/** rZi\  
* @author treeroot [#3*R_#8R  
* @since 2006-2-2 j} .,|7X  
* @version 1.0 Osk'zFiL<  
*/ h;lg^zlTb  
public class BubbleSort implements SortUtil.Sort{ kgl7l?|O  
5L!cS+QNU  
/* (non-Javadoc) +{5y,0R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pVa9g)+z}  
*/ d OYEl<!J  
public void sort(int[] data) { ]E:K8E  
int temp; kgZiyPcw  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ';>A=m9(4%  
if(data[j] SortUtil.swap(data,j,j-1); Y48MCL  
} |Q\O% cb  
} >%?kp[  
} 4[P]+Z5b+  
} Z6S?xfhr'{  
~TvKMW6/#  
} p3q >a<  
x&4gy%b  
选择排序: d7 W[.M$]  
hUo}n>Aa  
package org.rut.util.algorithm.support; A{IJ](5.kd  
Ks>l=5~v|  
import org.rut.util.algorithm.SortUtil; 0LW|5BVbIO  
t~0!K;nn  
/** 5nA *'($j  
* @author treeroot Zai:?%^  
* @since 2006-2-2 GX\6J]x=^2  
* @version 1.0 = 9K5f# ;e  
*/ \kS:u}Ip!  
public class SelectionSort implements SortUtil.Sort { p\).zuEf.  
|3SM  
/* 1<(('H  
* (non-Javadoc) 6dlV:f_\y  
* p G-9H3[f#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6VQe?oh  
*/ vS1#ien#  
public void sort(int[] data) { U1y8Y/  
int temp; K4w#}gzok  
for (int i = 0; i < data.length; i++) { H(rK39Q  
int lowIndex = i; _B6W:k|-7l  
for (int j = data.length - 1; j > i; j--) { w40 -K5wt>  
if (data[j] < data[lowIndex]) { D9 \!97  
lowIndex = j; _+*+,Vx  
} 7mT iO?/y<  
} VsjE*AJpe  
SortUtil.swap(data,i,lowIndex); D~T;z pS  
} &WV&_z  
} C>=[fAr mO  
SF. Is=b  
} h( V:-D  
$s S;#r0  
Shell排序: 8ZN"-]*  
Muay6b?  
package org.rut.util.algorithm.support; G4jyi&]  
@lhjO>@#I  
import org.rut.util.algorithm.SortUtil; F[5sFk M7  
#e*jP&1S  
/** {"vTaY@  
* @author treeroot {W11+L{8  
* @since 2006-2-2 rUxjm\  
* @version 1.0 4^3lG1^YY  
*/ Tg yY 9  
public class ShellSort implements SortUtil.Sort{ O-,0c1ts  
S-2@:E  
/* (non-Javadoc) 6+LBs.vl}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Usl963A#'F  
*/ N?j#=b+D  
public void sort(int[] data) { oU)Hco"_k  
for(int i=data.length/2;i>2;i/=2){ h6;vOd~%  
for(int j=0;j insertSort(data,j,i); A?+cdbxJw  
} 5D6 ,B  
} #gcv])to  
insertSort(data,0,1); ,k |QuOrCh  
} %/}46z9\  
"STd ;vR  
/** ,vcd>"PK  
* @param data ~kp,;!^vr  
* @param j 59#o+qo4   
* @param i +aZcA#%  
*/ X0 ^~`g  
private void insertSort(int[] data, int start, int inc) { &[W53Lqa  
int temp; ^|UD&6 dx  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =OamN7V=  
} t->I# t7  
} ?^gq  
} 60--6n  
L]Dq1q8`  
} B*OBXN>'P  
3Q!)bMv \  
快速排序: *nx$r[Mqj  
%Xe 74C"  
package org.rut.util.algorithm.support; `DS7J\c$  
S~hoAl"xb/  
import org.rut.util.algorithm.SortUtil; QX$3"AZ~  
fJD+GvV$x  
/** +5"Pm]oRbx  
* @author treeroot [79iC$8B|  
* @since 2006-2-2 @ MKf$O4K  
* @version 1.0 T!X`"rI  
*/ !rTkH4!_  
public class QuickSort implements SortUtil.Sort{ 9GtVcucN  
h'.B-y~c  
/* (non-Javadoc) KD`*[.tT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8}K4M(  
*/ Sf'uKSX1%  
public void sort(int[] data) { dLbSvK<(I  
quickSort(data,0,data.length-1); q$'D}OHT  
} PVaqKCj:6W  
private void quickSort(int[] data,int i,int j){ KsQn%mxS  
int pivotIndex=(i+j)/2; 4u= v  
file://swap h9kwyhd"  
SortUtil.swap(data,pivotIndex,j); ,}/6Za  
Xbu P_U'  
int k=partition(data,i-1,j,data[j]); c2wgJH!g  
SortUtil.swap(data,k,j); ?izl#?  
if((k-i)>1) quickSort(data,i,k-1); -"6Z@8=  
if((j-k)>1) quickSort(data,k+1,j); #|/ +znJm  
.oqe0$I  
} l#TE$d^ym  
/** 0M!GoqaA  
* @param data t!\B6!Fo  
* @param i v}TFM  
* @param j ;r} yeI Sf  
* @return Gq-~z mg  
*/ #ri;{d^6  
private int partition(int[] data, int l, int r,int pivot) { kD}vK+  
do{ 4 q\&Mb3  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); rE%H NPO  
SortUtil.swap(data,l,r); Y+{jG(rg.F  
} q!{>Nlk  
while(l SortUtil.swap(data,l,r); rV}&G!V_t  
return l; Ey)ey-'\  
} V1yP{XT=  
%D3Asw/5a  
} $r)NL  
+ />f?+  
改进后的快速排序: 7Q9| P?&:z  
W5>emx'>  
package org.rut.util.algorithm.support; VIg6'  
B+z>$6  
import org.rut.util.algorithm.SortUtil; L_q3m-x0h  
9.BgsV .  
/** 7^<6|>j4  
* @author treeroot ;;+h4O )  
* @since 2006-2-2 zKT4j1 h  
* @version 1.0 & gcZ4 gpH  
*/ CA5T3J@vAQ  
public class ImprovedQuickSort implements SortUtil.Sort { _'l"Dk  
}Fsr"RER@{  
private static int MAX_STACK_SIZE=4096; n`V?n  
private static int THRESHOLD=10; [I}z\3Z %  
/* (non-Javadoc) -$$mrU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "^)GnK +-  
*/ W#2} EX  
public void sort(int[] data) { -Jt36|O  
int[] stack=new int[MAX_STACK_SIZE]; )iid9K<HB  
<[K3Prf C  
int top=-1; [Sj"gLj  
int pivot; ^SK!? M  
int pivotIndex,l,r; Eihy|p  
N`~f77G  
stack[++top]=0; N 1ydL  
stack[++top]=data.length-1; MRg Ozg  
CY.4>,  
while(top>0){ 9bhubx\^/  
int j=stack[top--]; tu(^D23  
int i=stack[top--]; @$iZ9x6t  
w O Ou/Y  
pivotIndex=(i+j)/2; L4Kg%icz l  
pivot=data[pivotIndex]; Ow(aRWUZD_  
Uq~b4X$  
SortUtil.swap(data,pivotIndex,j); Kv)}  
O3mw5<%15  
file://partition {rK]Q! yj  
l=i-1; B&_Z&H=  
r=j; }9glr]=  
do{ : dNJ2&kJ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %hlgLM  
SortUtil.swap(data,l,r); bI`JG:^b  
} RR's W@  
while(l SortUtil.swap(data,l,r); 78r0K 5=  
SortUtil.swap(data,l,j); :LlZ#V2  
wS+!>Q_]w  
if((l-i)>THRESHOLD){ 3SI0etVr  
stack[++top]=i; UWhJkJsX  
stack[++top]=l-1; G:y+yE4  
} ,fqM>Q  
if((j-l)>THRESHOLD){ 9gglyoZ%  
stack[++top]=l+1; tCm]1ZgRW  
stack[++top]=j; 8vtembna4  
} ,7k-LAA  
y?P`vHf  
} Go^TTL   
file://new InsertSort().sort(data); Od ^Sr4C  
insertSort(data); s~bi#U;dF  
} X;2LK!x;y  
/** y/kB`Z(Yj  
* @param data sOiM/} O]  
*/ aC%Q.+-t  
private void insertSort(int[] data) { BvH?d]%  
int temp; ml Cg&fnDB  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7S^G]g!x  
} (9kR'kr  
} 0 q1x+  
} /HS"{@Z"h  
U]w"T{;@.)  
} mwyB~,[d+W  
aWH  
归并排序: Lq1?Y  
v;U5[  
package org.rut.util.algorithm.support; E/*&'Osq  
<P'FqQ]  
import org.rut.util.algorithm.SortUtil; mF|KjX~s  
$IjI{%  
/** m(}}%VeR"z  
* @author treeroot jWV}U a  
* @since 2006-2-2 GBWL0'COV  
* @version 1.0 H0sTL#/L\  
*/ D6l. x]K  
public class MergeSort implements SortUtil.Sort{ B /w&Lo  
^Y+Lf]zz*  
/* (non-Javadoc) 5V\",PA W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U%q6n"[ Cr  
*/ ZTz07Jt  
public void sort(int[] data) { QIlZZ  
int[] temp=new int[data.length]; )wCNLi>4  
mergeSort(data,temp,0,data.length-1); j*Pq<[~  
} ;b~\ [  
Ox&G  [  
private void mergeSort(int[] data,int[] temp,int l,int r){ a!-J=\>9  
int mid=(l+r)/2; :$,MAQ'9  
if(l==r) return ; >:> W=  
mergeSort(data,temp,l,mid); i}P{{kMJ  
mergeSort(data,temp,mid+1,r); < F;+A{M)  
for(int i=l;i<=r;i++){ 3Jlap=]68S  
temp=data; qt*+ D  
} V+y"L>K  
int i1=l; l v hJ  
int i2=mid+1; B(94;,(  
for(int cur=l;cur<=r;cur++){ dt,Z^z+" E  
if(i1==mid+1) jBOl:l,+  
data[cur]=temp[i2++]; D9A%8o  
else if(i2>r) eh `%E0b}  
data[cur]=temp[i1++]; r{9fm,  
else if(temp[i1] data[cur]=temp[i1++]; H~nZ=`P9&  
else -~lq <M  
data[cur]=temp[i2++]; >h#w~@e::  
} gCC7L(1  
} matna  
,!^5w,P:   
} &0q pgl|  
 =g M@[2  
改进后的归并排序: ktx| c19  
B5|\<CF  
package org.rut.util.algorithm.support; ,>S7c  
G%t>Ll``C  
import org.rut.util.algorithm.SortUtil; E'DHO2 Y  
qJrKt=CE  
/** (BeJ,K7  
* @author treeroot ?X6}+  
* @since 2006-2-2 -dBWpT  
* @version 1.0 XDPgl=~  
*/ v /c]=/  
public class ImprovedMergeSort implements SortUtil.Sort { & rab,I"  
tOLcnWt   
private static final int THRESHOLD = 10; I*3}erT  
)j>U4a  
/* {D Q%fneN4  
* (non-Javadoc) 2*V[kmD/3  
* II}M|qHaK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @e GBF Ns  
*/ Gb\PubJ  
public void sort(int[] data) { 0~^RHb.NA8  
int[] temp=new int[data.length]; Q'jw=w!|g  
mergeSort(data,temp,0,data.length-1); 2icQ (H;  
}  Q}L?o  
{XmCG%%L  
private void mergeSort(int[] data, int[] temp, int l, int r) { ZDW=>}~_y  
int i, j, k; A,cXN1V  
int mid = (l + r) / 2; z m$Sw0#(  
if (l == r) gE#'Zv{7  
return; " L`)^  
if ((mid - l) >= THRESHOLD) +wmG5!%$|  
mergeSort(data, temp, l, mid); 5z!$=SFz  
else bPU i44P  
insertSort(data, l, mid - l + 1); PU/<7P*  
if ((r - mid) > THRESHOLD) $0E+8xE  
mergeSort(data, temp, mid + 1, r); c_D(%Vf5  
else hcj}6NXc  
insertSort(data, mid + 1, r - mid); *kl  :/#  
/D3{EjUE=  
for (i = l; i <= mid; i++) { Ptv'.<-  
temp = data; 5o dT\>Sn  
} LnI  
for (j = 1; j <= r - mid; j++) { 3uqhYT;  
temp[r - j + 1] = data[j + mid]; mOsp~|d  
} RDp  
int a = temp[l]; 9_?xAJ  
int b = temp[r]; :lcq3iFn  
for (i = l, j = r, k = l; k <= r; k++) { >Q\Kc=Q|  
if (a < b) { Zp9. ~&4o-  
data[k] = temp[i++]; w#|L8VAh  
a = temp; U\Wo&giP[  
} else { IT_I.5*A2  
data[k] = temp[j--]; KkA)p/  
b = temp[j]; \xkKgI/  
} S%i^`_=Q  
} ;/j2(O^  
} U%nkPIFm  
No'?8+i  
/** =1l6( pJ  
* @param data o eU i  
* @param l ?dgyi4J?=`  
* @param i ,twx4r^  
*/ F~mIV;BP  
private void insertSort(int[] data, int start, int len) { e"nm<&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y>P+"Z.K%}  
} vjuFVJwL  
} $v|W2k  
} F)LbH& Kn  
} WTJ 0Q0U  
M6)  G_-  
堆排序: bO=|utpk  
;.A}c)b  
package org.rut.util.algorithm.support; `@/)S^jBau  
%c }V/v_h  
import org.rut.util.algorithm.SortUtil; tJ\ $%  
+WH\,E  
/** Iux3f+H  
* @author treeroot FlBhCZ|^  
* @since 2006-2-2 .A2$C|a*  
* @version 1.0 xh;V4zK@`  
*/ 5?kfE  
public class HeapSort implements SortUtil.Sort{ fjh|V9H  
i+Z)`  
/* (non-Javadoc) q&3 ;e4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v ,8;: sD  
*/ D|:'|7l W  
public void sort(int[] data) { S /hx\TzC  
MaxHeap h=new MaxHeap(); B/twak\  
h.init(data); (Rw<1q`,  
for(int i=0;i h.remove(); p}1i[//S  
System.arraycopy(h.queue,1,data,0,data.length); G{U#9   
} .H" ?& Mf  
cb}"giXQTB  
private static class MaxHeap{ [C'bfX5HB5  
Fc~G*Gz~Z|  
void init(int[] data){ 8 #_pkVQw:  
this.queue=new int[data.length+1]; VW-qQe  
for(int i=0;i queue[++size]=data; X0/slOT  
fixUp(size); sg2;"E@  
} I Dohv[#  
} "4N&T#  
rq+_ [!  
private int size=0; =8AT[.Hh  
wZqYtJ  
private int[] queue; Ez3fL&*  
-$Oh.B`i  
public int get() { F-_u/C]  
return queue[1]; 1Cr&6't  
} I'/3_AX  
K"#$",}=  
public void remove() { GEc6;uz<  
SortUtil.swap(queue,1,size--); Z(mUU]  
fixDown(1); F-&tSU,  
} LgqQr6y"  
file://fixdown ARH~dN*C  
private void fixDown(int k) { C/kf?:j  
int j; M(%H  
while ((j = k << 1) <= size) { Q]ersA8 V>  
if (j < size %26amp;%26amp; queue[j] j++; VD;*UkapZx  
if (queue[k]>queue[j]) file://不用交换 g`Z=Y7jLH  
break; ~k"+5bHa*  
SortUtil.swap(queue,j,k); TEtmmp0OD  
k = j; WtT;y|W  
} E&M(QX5  
} *dl hRa  
private void fixUp(int k) { UP~28%>X  
while (k > 1) { p.DQ|?  
int j = k >> 1; YQBLbtn6(  
if (queue[j]>queue[k]) PX:#+bq1  
break; X1j8tg  
SortUtil.swap(queue,j,k); DI C*{aBf  
k = j; $7x2TiAL  
} !/FRL<mp  
} F/5&:e?( )  
Y|Iq~Qy~  
} Kk3+ ]W<  
_imuyt".+  
} '{&Q&3J_  
2t= = <x  
SortUtil: `#""JTA"  
@N*|w Kc+  
package org.rut.util.algorithm; 2W AeSUX  
#]` uH{  
import org.rut.util.algorithm.support.BubbleSort; H$![]Ujq  
import org.rut.util.algorithm.support.HeapSort; w~lH2U'k}  
import org.rut.util.algorithm.support.ImprovedMergeSort; `7 "="T~ *  
import org.rut.util.algorithm.support.ImprovedQuickSort; j G8;p41  
import org.rut.util.algorithm.support.InsertSort; fzsy<Vl",  
import org.rut.util.algorithm.support.MergeSort; e3I""D{)[=  
import org.rut.util.algorithm.support.QuickSort; gZ@+62  
import org.rut.util.algorithm.support.SelectionSort; -/f$s1  
import org.rut.util.algorithm.support.ShellSort; -TUJ"ep]QJ  
mLCD N1UO{  
/** e~)[I!n  
* @author treeroot AA\a#\#Z3  
* @since 2006-2-2 F*72g)hVh  
* @version 1.0 n0(Q/  
*/ E7Lqa S  
public class SortUtil { hD6BP  
public final static int INSERT = 1; UU=]lWib  
public final static int BUBBLE = 2; @16GF!.  
public final static int SELECTION = 3; Z.VKG1e}  
public final static int SHELL = 4; F8pA)!AH  
public final static int QUICK = 5; m:@y_:X0  
public final static int IMPROVED_QUICK = 6; B[b>T=  
public final static int MERGE = 7; Wjb_H (D  
public final static int IMPROVED_MERGE = 8; O( ^h_  
public final static int HEAP = 9; {_9O4 + &  
Ho &Q }<(  
public static void sort(int[] data) { GJ9>i)+h;  
sort(data, IMPROVED_QUICK); rc_m{.b  
} |{9<%Ok4P  
private static String[] name={ J0xHpe  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O}M-6!%<,  
}; ;;0'BdsL`  
=j.TDv'^nd  
private static Sort[] impl=new Sort[]{ :=Olp;+_  
new InsertSort(), bzr2Zj{4  
new BubbleSort(), 9q'9i9/3d  
new SelectionSort(), 2B_|"J  
new ShellSort(), <)7aNW.  
new QuickSort(), gAAC>{Wh  
new ImprovedQuickSort(), )Q2IYCj{  
new MergeSort(), 7^dr[.Q[*  
new ImprovedMergeSort(), <KMCNCU\+  
new HeapSort() 8(1*,CJQg  
}; * %D_\0;  
U,g8:M xHK  
public static String toString(int algorithm){ *yBVZD|?H  
return name[algorithm-1]; O= S[ n  
} o[Ffa# sE  
8$IKQNS  
public static void sort(int[] data, int algorithm) {  ?eS;Yc  
impl[algorithm-1].sort(data); ~$J ;yo~  
} =B}IsBn'J  
$Q*R/MY  
public static interface Sort { q?!HzZ  
public void sort(int[] data); M}8P _<,  
} j iKHx_9P  
<h -)zI  
public static void swap(int[] data, int i, int j) { D{(}&8a9  
int temp = data; v>8.TE~2  
data = data[j]; M%E<]H2;S  
data[j] = temp; y3~`qq  
} r8 9o  
} ,L& yKS@  
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