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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。 CFzNwgv]z  
插入排序: WQ[_hg|k  
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package org.rut.util.algorithm.support; bJRN;g  
66/3|83Z  
import org.rut.util.algorithm.SortUtil; 5][Ztx  
/** 5R@  
* @author treeroot \6E|pbJ}x  
* @since 2006-2-2 !sDh4jQ`  
* @version 1.0 ^?0DP >XA  
*/ PP;}e  
public class InsertSort implements SortUtil.Sort{ +BVym~*^  
8$85^Of  
/* (non-Javadoc) zVXC1u9B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ir`eL  
*/ /<@SFF.  
public void sort(int[] data) { *c~T@m~DR  
int temp; !46RGU:I  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k9  "[H'  
} uD1e!oU  
} D7lK30  
} "!Uqcay-  
x(hE3S#+  
} YQ+tDZY8`  
#E? (vA1  
冒泡排序: z.$4!$q  
,k{#S?:b  
package org.rut.util.algorithm.support; (i34sqV$m  
Z*y`R XE  
import org.rut.util.algorithm.SortUtil; d F9!G;V  
CdasP9"1  
/** P<l&0dPO8  
* @author treeroot t]y D-3'l&  
* @since 2006-2-2 {5%5}[/x  
* @version 1.0 %\D)u8}  
*/ C~nzH,5  
public class BubbleSort implements SortUtil.Sort{ ^B(V4-|  
]+|~cRQ9I  
/* (non-Javadoc) |]J>R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5mJJU  
*/ GNXHM*~  
public void sort(int[] data) { @ zs'Y8  
int temp; U]^HjfX\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ |B'9\OkP[=  
if(data[j] SortUtil.swap(data,j,j-1); lsNrAA%m  
} ;3d"wW]}7K  
} ]l1\? I  
} a:"Uh**  
} ^* J2'X38I  
S0~2{ G"v  
} =NnNN'}  
m@"QDMHk.  
选择排序: #JgH}|&a$  
"} q@Y=  
package org.rut.util.algorithm.support; OK{quM5  
tSVc|j  
import org.rut.util.algorithm.SortUtil; qQA}Z*( m  
q*F{/N **  
/** dRj|g  
* @author treeroot LV\DBDM  
* @since 2006-2-2 xl6,s>ob  
* @version 1.0 giZP.C"0  
*/ +V m}E0Ov  
public class SelectionSort implements SortUtil.Sort { 2q3+0Et8  
)Y2{_ bx4"  
/* Gnfd;. (.  
* (non-Javadoc) !G SV6  
* v%"|WV[N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e?7& M  
*/ c0%"&a1]]V  
public void sort(int[] data) { f0X_fm_q  
int temp; wF|fK4F  
for (int i = 0; i < data.length; i++) { NWM8[dI  
int lowIndex = i; V n*  
for (int j = data.length - 1; j > i; j--) { xnmmXtk  
if (data[j] < data[lowIndex]) { jp0<pw_  
lowIndex = j; r30 <(nF  
} <\NY<QIwFw  
} B$b +Ymu  
SortUtil.swap(data,i,lowIndex); in~D  
} 'NX```U0  
} .q9 $\wM/  
7w'wjX-  
} ep2k%?CX 1  
p3 w  
Shell排序: 3 ):A   
NF+iza;DP  
package org.rut.util.algorithm.support; y^%n'h{  
?YZ- P{rTS  
import org.rut.util.algorithm.SortUtil; =at@Vp/y  
vg3=8>#  
/** _9=Yvc=  
* @author treeroot &Q>k7L!  
* @since 2006-2-2 !P)O(i=  
* @version 1.0 a4XU?-sUh  
*/ @xbQYe%J  
public class ShellSort implements SortUtil.Sort{ A9wh(P0\  
OY:,D  
/* (non-Javadoc) Zn ''_fjh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5[A@ gw0u  
*/ ~ vJ,`?  
public void sort(int[] data) { W7 Cc  
for(int i=data.length/2;i>2;i/=2){ Zy o[(`y  
for(int j=0;j insertSort(data,j,i); ~xD ={9BL  
} VO$ iNK  
} b]x4o#t  
insertSort(data,0,1); W0l,cOOZJ  
} WN01h=1J_  
%KmiH ;U  
/** u/M+u;  
* @param data w,h`s.AN  
* @param j JKGc3j,+#  
* @param i Vm3v-=6  
*/ rd9e \%A  
private void insertSort(int[] data, int start, int inc) { $4/yZaVb  
int temp; MhR:c7,  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *.!Np9l,V  
} Fxm$9(Y  
} 1UE6 4Kl:S  
} dYL"h.x  
qNYN-f~@,  
} 4"(<X  
S" xKL{5  
快速排序: R:#k%}W  
+R|z{M)*  
package org.rut.util.algorithm.support; s;3={e.  
<Dwar>}  
import org.rut.util.algorithm.SortUtil; ;\=M; Zt  
[N/"5 [  
/** h&--,A >  
* @author treeroot /(iFcMT  
* @since 2006-2-2 =zKhz8B(  
* @version 1.0 ApAO/q  
*/ :E:38q,hG  
public class QuickSort implements SortUtil.Sort{ 1`a5C.v  
C!fMW+C@  
/* (non-Javadoc) BFo5\l:q8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LUqB&,a}  
*/ X&7 F_#s  
public void sort(int[] data) { 6f\Lf?vF  
quickSort(data,0,data.length-1); 0a}u;gt,4w  
} jpO7'ivG  
private void quickSort(int[] data,int i,int j){ BK,{N0  
int pivotIndex=(i+j)/2; 4iKgg[)7`=  
file://swap X{\F;Cb*  
SortUtil.swap(data,pivotIndex,j); OoA|8!CFa  
aFS,GiB  
int k=partition(data,i-1,j,data[j]); Q$="_y2cTA  
SortUtil.swap(data,k,j); fSs4ZXC  
if((k-i)>1) quickSort(data,i,k-1); yF"1#{*y  
if((j-k)>1) quickSort(data,k+1,j); =y0C1LD+  
B2C$N0R#  
} JV]^zW  
/** J2 'Nd'  
* @param data WJ4li@T7V  
* @param i /f|X(docI  
* @param j [3{W^WSOz  
* @return ]Bjyi[#bg  
*/ X pBj%e:  
private int partition(int[] data, int l, int r,int pivot) { PfC!lI BU  
do{ qzf!l"bT  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2T V X)q<\  
SortUtil.swap(data,l,r); m^GJuP LW  
} Si6al78  
while(l SortUtil.swap(data,l,r); L IZRoG8  
return l; ha(Z<  
} K':K{ee>  
YKO){f5  
} ;#oie< Vit  
`Ye\p6v!+  
改进后的快速排序: <8d^^0  
<N_+=_  
package org.rut.util.algorithm.support; IE9 XU9Kd  
RPE5K:P  
import org.rut.util.algorithm.SortUtil; il:$sd  
E )5E$  
/** =jX8.K4]  
* @author treeroot 2JJ"O|Ibz  
* @since 2006-2-2 L1Iz<>  
* @version 1.0 }>VG~u8  
*/ ,PWgH$+  
public class ImprovedQuickSort implements SortUtil.Sort { v" OY 1<8  
u%$Zqee  
private static int MAX_STACK_SIZE=4096; 1oN^HG6O  
private static int THRESHOLD=10; ENGg ~D  
/* (non-Javadoc) /+\uqF8F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dt`{!lts'  
*/ V&Xe!S  
public void sort(int[] data) { -3;*K4z$/  
int[] stack=new int[MAX_STACK_SIZE]; V- Cv,8   
d*~ ICir7  
int top=-1; G-?d3 n  
int pivot; YRh  B RE  
int pivotIndex,l,r; Y6Lf@}2(i  
(fCXxyZrr  
stack[++top]=0; mo[Zb0>  
stack[++top]=data.length-1; ?sMP~RHQ  
WXmn1^"kK}  
while(top>0){ vfq%H(  
int j=stack[top--]; HA2k [F@3^  
int i=stack[top--]; , ]+z)   
\hM|(*DL  
pivotIndex=(i+j)/2; WIv?}gi: X  
pivot=data[pivotIndex]; =y/8 ^^  
i1>- QDYnJ  
SortUtil.swap(data,pivotIndex,j); DRc)iE>@  
Lz:(6`S  
file://partition { Fawt:  
l=i-1; ,)iKH]lY=  
r=j; $aN&nhoO<  
do{ 21< j\ M  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U`Wauv&  
SortUtil.swap(data,l,r); &<UMBAS  
} jz5qQt]^  
while(l SortUtil.swap(data,l,r); sIK;x]Q)  
SortUtil.swap(data,l,j); TJ1+g \  
Ee3hG2d`  
if((l-i)>THRESHOLD){ op6CA"w  
stack[++top]=i; 1. rj'  
stack[++top]=l-1; L (khAmm  
} l PK +$f$  
if((j-l)>THRESHOLD){ ,=|ZB4HA  
stack[++top]=l+1; }w1~K'ck}>  
stack[++top]=j; QoG cWJ  
} 1;mW,l'`  
72oF,42y  
} p\JfFfC  
file://new InsertSort().sort(data); Um: Hrjw  
insertSort(data); dO4{|(z  
} AiK  
/** jSwf*u  
* @param data ;ByOth|9P  
*/ /6h(6 *JI  
private void insertSort(int[] data) { CC@.MA@9N  
int temp; ?_Q/}@`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qt;y2gf=  
} Hrzf'a|^  
} >&p0d0  
} t$A%*JBKm  
%"af748!+D  
} IjR'Qou5  
L30$%G|  
归并排序: e}.^Tiwd]  
k31I ysh  
package org.rut.util.algorithm.support; ^ 8@Iyh  
|'{zri|A"  
import org.rut.util.algorithm.SortUtil; ##EYH1P]  
hYM@?/(q  
/** Xa[?^P  
* @author treeroot ;\\@q"n%<  
* @since 2006-2-2 Vgyew9>E  
* @version 1.0 tX"Th'Qi  
*/ ,I_^IitN  
public class MergeSort implements SortUtil.Sort{ &bp=`=*  
e`v`XSA[p  
/* (non-Javadoc) @$2))g`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K"[AxB'F  
*/ q7-L53.x  
public void sort(int[] data) { ~I799Xi  
int[] temp=new int[data.length]; ZG du|  
mergeSort(data,temp,0,data.length-1); >+ 4huRb  
} 9`w)  
Tp9- niW  
private void mergeSort(int[] data,int[] temp,int l,int r){ |)K]U  
int mid=(l+r)/2; h?FmBK'BAd  
if(l==r) return ; o`q_wdy?  
mergeSort(data,temp,l,mid); [_.5RPJP8  
mergeSort(data,temp,mid+1,r); mUz\ra;z  
for(int i=l;i<=r;i++){ 6^c>,.R  
temp=data; ^+m+zd_  
} i6 (a@KRY  
int i1=l; O=dJi9;`#_  
int i2=mid+1; A6pjRxg  
for(int cur=l;cur<=r;cur++){ y:v xE8$Q  
if(i1==mid+1) DANw1 _X\  
data[cur]=temp[i2++]; )h8\u_U  
else if(i2>r) QtJg ^2@  
data[cur]=temp[i1++]; *s>BG1$<  
else if(temp[i1] data[cur]=temp[i1++]; 't9hXzAfW  
else Myq5b`z  
data[cur]=temp[i2++]; o,!T2&}  
} eU N"w,@y  
} C$@yG)Pj   
p!<$vE  
} {M?vBg R\B  
.^m>AKC0cX  
改进后的归并排序: ryc& n5  
"n=vN<8(o  
package org.rut.util.algorithm.support; V2<?ol  
,s_T pq  
import org.rut.util.algorithm.SortUtil; OHflIeq#@  
$Tb G+Eb8  
/** a<A+4uXyD  
* @author treeroot Ii^5\v|C  
* @since 2006-2-2 ph#tgLJ  
* @version 1.0 `)Z!V?&!  
*/ JB&\i#  
public class ImprovedMergeSort implements SortUtil.Sort { vQa'S-@u  
<6G1 1-K  
private static final int THRESHOLD = 10; ?"KC-u|  
w1|A5q'M  
/* f*24)Wn<  
* (non-Javadoc) l?q%?v8  
* %Jf<l&K .`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |K^"3`SJ  
*/ H-xFiF  
public void sort(int[] data) { 1<<kA:d  
int[] temp=new int[data.length]; J-<^P5  
mergeSort(data,temp,0,data.length-1); [M%9_CfZOy  
} wV)}a5+  
bLnrbid  
private void mergeSort(int[] data, int[] temp, int l, int r) { /^ " 83?_  
int i, j, k; hG_?8:W8HT  
int mid = (l + r) / 2; hHPs&EA.p  
if (l == r) n 8pt\i0  
return; LjH*rjS4  
if ((mid - l) >= THRESHOLD) eJo3 MK  
mergeSort(data, temp, l, mid); 2PR^:h2  
else cf7v[ZZ}  
insertSort(data, l, mid - l + 1); u?[ q=0.J7  
if ((r - mid) > THRESHOLD) !8@*F  
mergeSort(data, temp, mid + 1, r); )C.yF)Ql  
else 0'r%,0  
insertSort(data, mid + 1, r - mid); U5]pi+r  
gBf4's  
for (i = l; i <= mid; i++) { jkF8\dR  
temp = data; 1[*{(e  
} P &)1Rka  
for (j = 1; j <= r - mid; j++) { oQ7]= |  
temp[r - j + 1] = data[j + mid]; gs W0  
} 6st^4S5  
int a = temp[l]; $^tv45  
int b = temp[r]; vwr74A.g0  
for (i = l, j = r, k = l; k <= r; k++) { {@u<3 s  
if (a < b) { {R^'=(YFy  
data[k] = temp[i++]; sgr=w+",Q  
a = temp; %ObD2)s6:^  
} else { 3[XQR8o  
data[k] = temp[j--]; h)v^q: ='  
b = temp[j]; 1KYN>s:  
} ]p~IYNl2%j  
} Q8MS,7y/  
} m4[g6pNx~  
?'r9"M>  
/** 'lS `s(  
* @param data FhIqy %X  
* @param l 1|?K\B  
* @param i w^1Fi8+  
*/ R1-k3;v^  
private void insertSort(int[] data, int start, int len) { J@9}`y=K  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~^vC,]hU  
} -K[782Q  
} p[2GkP  
} 5=KF!?  
} h~7,`fo  
0"g@!gSrQ  
堆排序: YGsS4ia*4i  
m/`IGT5J  
package org.rut.util.algorithm.support; fRm}S>Nibb  
p[WX'M0f  
import org.rut.util.algorithm.SortUtil; y>\S@I  
WjMS5^ _  
/** OSzjK7:  
* @author treeroot 2BzqY`O  
* @since 2006-2-2 $cVi;2$p  
* @version 1.0 @1R8 -aa-r  
*/ w.N,)]h  
public class HeapSort implements SortUtil.Sort{ }xlKonk  
+@VYs*&&  
/* (non-Javadoc) y5 m!*=`l`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H0*5_OJ!i  
*/ x "(9II*  
public void sort(int[] data) { T ^JuZG  
MaxHeap h=new MaxHeap(); 1'G8o=~  
h.init(data); %q_Miu@  
for(int i=0;i h.remove(); 9YF$CXonE=  
System.arraycopy(h.queue,1,data,0,data.length); s T3p>8n  
} #3kXmeyrD  
8G ]w,eF  
private static class MaxHeap{ [$ :  
e@F|NCQ.9  
void init(int[] data){ r-w2\2  
this.queue=new int[data.length+1]; !5x Ly6=}  
for(int i=0;i queue[++size]=data; "D* Wi7  
fixUp(size); &B!%fd.'  
} w5]l1}rl  
} J< JBdk  
)'q%2%Ak  
private int size=0; KIL18$3J  
) qPSD2h  
private int[] queue; GLKO]y  
2r ];V'r  
public int get() { zL s^,x  
return queue[1]; j.3o W  
} ,2WH/"  
m%QqmTH  
public void remove() { )Mzt3u  
SortUtil.swap(queue,1,size--); ;^l_i4A  
fixDown(1); w 7tC|^#G  
} |Vx~fKS\  
file://fixdown -O&"|   
private void fixDown(int k) { z^s ST  
int j; ,m07p~,V  
while ((j = k << 1) <= size) { S2$5!(P  
if (j < size %26amp;%26amp; queue[j] j++; .#^0pv!  
if (queue[k]>queue[j]) file://不用交换 xKp0r1}  
break; |0{ i9 .=  
SortUtil.swap(queue,j,k); Kla:e[{  
k = j; j"<Y!Y3  
} NMjnL&P`  
} 0 15Owi  
private void fixUp(int k) { jeDlH6X'  
while (k > 1) { =sQ(iso%f  
int j = k >> 1;  ~q%  
if (queue[j]>queue[k]) *kaJ*Ti-/  
break; %OI4a5V*l  
SortUtil.swap(queue,j,k); BV9*s  
k = j; qtSs)n  
} 9y"TDo  
} p q-!WQ  
lSc,AOXp  
} |l90g|isJ  
Sa] mm/ G  
} &]nd!N  
oA3d^%(c  
SortUtil: Mr6E/7g%  
C<he4n.  
package org.rut.util.algorithm; K[ ?R[  
KC Xwn  
import org.rut.util.algorithm.support.BubbleSort; R!{7OkC  
import org.rut.util.algorithm.support.HeapSort; f]}}yBte`  
import org.rut.util.algorithm.support.ImprovedMergeSort; 'yNPhI  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5fHYc0  
import org.rut.util.algorithm.support.InsertSort; <`JG>H*B6  
import org.rut.util.algorithm.support.MergeSort; hU,$|_WDy  
import org.rut.util.algorithm.support.QuickSort; 4]UT+'RubX  
import org.rut.util.algorithm.support.SelectionSort; *5wv%-  
import org.rut.util.algorithm.support.ShellSort; 3c 28!3p  
 b~!om  
/** u g6r]0]  
* @author treeroot WzG07 2w  
* @since 2006-2-2 *4#on>  
* @version 1.0 [&n|\!  
*/ ;4d.)-<No_  
public class SortUtil { *IlQ5+3I  
public final static int INSERT = 1; yv${M u  
public final static int BUBBLE = 2; 0^>E`/  
public final static int SELECTION = 3; v:P!(`sF  
public final static int SHELL = 4; silp<13HN  
public final static int QUICK = 5; Kcn\g.  
public final static int IMPROVED_QUICK = 6;  EW5]!%  
public final static int MERGE = 7; x_ySf!ih  
public final static int IMPROVED_MERGE = 8; k E_ky)  
public final static int HEAP = 9; ry,}F@P&  
sM9- 0A  
public static void sort(int[] data) { b@-)Fy4d2  
sort(data, IMPROVED_QUICK); P`!Ak@N  
} 9`&77+|;e  
private static String[] name={ t/Z!O z6ZE  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" P7 8uq  
}; {@\/a  
A}eOR=E  
private static Sort[] impl=new Sort[]{ ocP*\NR  
new InsertSort(), ~}%&p& p  
new BubbleSort(), L`[F~$|  
new SelectionSort(), *'^:S#=  
new ShellSort(), 7S2c|U4IM  
new QuickSort(), N K"%DU<  
new ImprovedQuickSort(), [Ye5Y?  
new MergeSort(), ~D!ESe*=  
new ImprovedMergeSort(), M;@Ex`+?i  
new HeapSort() | W?[,|e  
}; q+J0}y{#8)  
Fs9W>*(  
public static String toString(int algorithm){ #,Bj!'Q'-  
return name[algorithm-1]; q5gP~*?  
} coO.kTO;  
ULbP_y>(Y  
public static void sort(int[] data, int algorithm) { #x|VfN5f  
impl[algorithm-1].sort(data); >;.*  
} MZiF];OY  
|bvGYsn_#=  
public static interface Sort { W[ "HDR  
public void sort(int[] data); jrdtd6b}  
} F$C+R&V_  
/~"AG l.  
public static void swap(int[] data, int i, int j) { '7=<#Blc  
int temp = data; U:Fpj~E_w  
data = data[j]; c8tP+O9  
data[j] = temp; p(7c33SyF  
} x[a'(5PwY  
} 1Y2a* J  
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