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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。 O0(Q0Ko  
插入排序: RHl=$Hm.%  
C 3XZD4.2  
package org.rut.util.algorithm.support; #Q7x:,f  
"~2#!bK7  
import org.rut.util.algorithm.SortUtil; 5~%,u2  
/** A1t~&?  
* @author treeroot pvQK6r  
* @since 2006-2-2 >g"M.gW  
* @version 1.0 [gns8F#H\  
*/ Y0fO.k#C^  
public class InsertSort implements SortUtil.Sort{ !a&SB*%^I3  
#!u51P1  
/* (non-Javadoc) $EGRaps{j>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V]kGcS}  
*/ u}LX,B-n(  
public void sort(int[] data) { m5em<P!G  
int temp; ]v\egfW,W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j5h 6u,^:  
} d J%Rk#?;A  
} M$4=q((0  
} ~z _](HKoS  
/`O]etr`d  
} m":SE?{{&  
-S%q!%}u  
冒泡排序: oTD-+MZn  
SM /ykk  
package org.rut.util.algorithm.support; pz35trW  
LQ(5D_yG.  
import org.rut.util.algorithm.SortUtil; 'uf\.F  
q&Tn>B  
/** H~dHVQtJZ  
* @author treeroot Sa1z,EP  
* @since 2006-2-2 *zVLy^L_8  
* @version 1.0 ;y~{+{{Ow  
*/ "`i:)Et  
public class BubbleSort implements SortUtil.Sort{ Tq\~<rEo  
d1TdH s\  
/* (non-Javadoc) Jg|cvu-+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mhi90Jc  
*/ pjHRV[`AP  
public void sort(int[] data) { v]{uxlh  
int temp; o%WjJ~!zL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6(J4IzZ  
if(data[j] SortUtil.swap(data,j,j-1); euj8p:+X  
} T<f\*1~^  
} Z 5)_B,E:X  
} ,c%K)KuPK.  
} <ql w+RVt  
m&`(p f4A  
} 4OOn,09  
<{cNgKd9  
选择排序: JYg% ~tW'  
7*>S;$  
package org.rut.util.algorithm.support; :`Uyn!w  
oO#xx)b  
import org.rut.util.algorithm.SortUtil; mo;)0Vq2l  
p>:ef<.i  
/** G=Hf&l  
* @author treeroot t `Y!"l  
* @since 2006-2-2 8@ %mnyQ  
* @version 1.0 N=T.l*8  
*/ EY)Gi`lK  
public class SelectionSort implements SortUtil.Sort { a%T -Z.rd  
gM3]%L_  
/* *j /S4qG  
* (non-Javadoc) 0Ws;|Yg  
* :/v,r=Y9p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !0ce kSesr  
*/ 1 @%B?  
public void sort(int[] data) { BeI;#m0  
int temp; N~):c2Kp<9  
for (int i = 0; i < data.length; i++) { ss`P QN  
int lowIndex = i; -*|:v67C&  
for (int j = data.length - 1; j > i; j--) { /BMtcCPG!  
if (data[j] < data[lowIndex]) { ms}f>f=  
lowIndex = j; [Y$5zeA  
} 3duG.iUlL  
} zUs~V`0  
SortUtil.swap(data,i,lowIndex); `k(u:yGK  
} OQ(D5GR:4  
} o#xgrMB  
LZM,QQ  
} \T`["<  
hhpv\1h#  
Shell排序: G[3k  
F<Hqo>G  
package org.rut.util.algorithm.support; 4L5o\'X  
ieo|%N{'  
import org.rut.util.algorithm.SortUtil; F&QTL-pQW  
x" 'KW (  
/** K DYYB6|  
* @author treeroot wfxOx$]z K  
* @since 2006-2-2 4l&"]9D  
* @version 1.0 k7^R,.c@  
*/ !TP6=ks  
public class ShellSort implements SortUtil.Sort{ ~n[b^b  
=s'XR@  
/* (non-Javadoc) &:V@2_6"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,AH0*L  
*/ 4K9Rpm  
public void sort(int[] data) { 'aD6>8/Hj  
for(int i=data.length/2;i>2;i/=2){ &P 8!]:  
for(int j=0;j insertSort(data,j,i); `,wc Q  
} u12zRdn  
} {r={#mO;p  
insertSort(data,0,1); E@w[&#  
} A7k'K4  
O)`fvpVU  
/** Bx(yu'g|a  
* @param data [N)#/ 6j  
* @param j oi2J :Y4  
* @param i 2Co@+I[,4&  
*/ j2|XD Of  
private void insertSort(int[] data, int start, int inc) { E: 9o;JU  
int temp; 5kcJ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?ork^4 $s  
} cYGRy,'gH  
} 1~%o}+#-  
} ,e9CJ~a  
zKLn!b#>  
} NSw<t9Yi  
XQ]`&w(  
快速排序: g b -Bxf  
ngP7'1I  
package org.rut.util.algorithm.support; _6;<ow  
a{h%DpG  
import org.rut.util.algorithm.SortUtil; ZjqA30!  
NuU'0_")/  
/** ||uZ bP@  
* @author treeroot h4f ~5- Y  
* @since 2006-2-2 *^'wFbaBO  
* @version 1.0 ezp<@'0ZT  
*/ !#q{Z>H`  
public class QuickSort implements SortUtil.Sort{ 6wPeb~{  
FbveI4  
/* (non-Javadoc) /H')~!Yz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2Ok?@ZdjA{  
*/ Bg-VCJI<  
public void sort(int[] data) { #c-b}.R  
quickSort(data,0,data.length-1); MDk*j,5V  
} LI[ ?~P2\  
private void quickSort(int[] data,int i,int j){ JwZ?hc  
int pivotIndex=(i+j)/2; TfJL+a0  
file://swap OCCEL9d  
SortUtil.swap(data,pivotIndex,j); EYG"49 c  
;4 ,'y  
int k=partition(data,i-1,j,data[j]); tWm>j  
SortUtil.swap(data,k,j); J' W}7r  
if((k-i)>1) quickSort(data,i,k-1); T?>E{1pS  
if((j-k)>1) quickSort(data,k+1,j); PdT83vOCE  
5O&d3;p'  
} dY8(nQG  
/** _R)&k%i}  
* @param data !Cw!+fZ\l  
* @param i <P1rqM9^  
* @param j <"?*zx&  
* @return qU#$2  
*/ 8x9Rm  
private int partition(int[] data, int l, int r,int pivot) { 4IZlUJ?j+c  
do{ /|?F)%v\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); < kz[:n:  
SortUtil.swap(data,l,r); jo)6 %w]  
} i3\~Qj;1  
while(l SortUtil.swap(data,l,r); cf)J )  
return l; t:>x\V2m  
} 22>;vM."  
m%pBXXfGYj  
} 4d0#86l~J/  
=L"^.c@  
改进后的快速排序: 402x<H  
.)7:=  
package org.rut.util.algorithm.support; LP9)zi  
-ui< E?v  
import org.rut.util.algorithm.SortUtil; GMb(10T`  
&UL_bG }  
/** l4KbTKm7  
* @author treeroot fD{II+T  
* @since 2006-2-2 tjj^O%SV<  
* @version 1.0 & 1_U1  
*/ CZY7S*fL  
public class ImprovedQuickSort implements SortUtil.Sort { [![ G7H%f  
EWA;L?g|A  
private static int MAX_STACK_SIZE=4096; .5.8;/ /  
private static int THRESHOLD=10; 'seyD  
/* (non-Javadoc) rnO0-h-;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :6Pnie  
*/ =NZ[${7mq  
public void sort(int[] data) { d8E,o7$m  
int[] stack=new int[MAX_STACK_SIZE]; |g<*Rk0  
t,h{+lYU  
int top=-1; Cp^g'&  
int pivot; wz#A1F  
int pivotIndex,l,r; \3aTaT?..  
7d ;pvhnH  
stack[++top]=0; 'z5h3J  
stack[++top]=data.length-1; V@%  
\gItZ}+c4}  
while(top>0){ i.y=8GxY  
int j=stack[top--]; _ij$f<  
int i=stack[top--]; 4PWAGuN^  
@A{m5h  
pivotIndex=(i+j)/2; K'aWCscM  
pivot=data[pivotIndex]; gRAC d&)  
` H XEZ|  
SortUtil.swap(data,pivotIndex,j); ]GX \|1L  
ZB[k{Y  
file://partition ong""K4H  
l=i-1; &cu!Hx  
r=j; ,gMy@  
do{ J R$r!hX  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %ucjMa>t  
SortUtil.swap(data,l,r); M4KWN'  
} (?3[3 w~  
while(l SortUtil.swap(data,l,r); SdJ/ 4&{ !  
SortUtil.swap(data,l,j); )DT|(^  
'e@=^FC  
if((l-i)>THRESHOLD){ _dU8'H  
stack[++top]=i; x6;j<m5Mjx  
stack[++top]=l-1; g?G+dnl/8  
} J#Z5^)$  
if((j-l)>THRESHOLD){ u1Ek y/e-  
stack[++top]=l+1; .<#ATFmY  
stack[++top]=j; 7LCp7$Cp  
} qaVy.  
;:mu}  
} DG[%Nhle  
file://new InsertSort().sort(data); !tXZ%BP.u  
insertSort(data); /(?@mnq_  
} oY=1C}  
/** hO#t:WxFI  
* @param data he$XLTmr:  
*/ \NK-L."[  
private void insertSort(int[] data) { }$kQs!#  
int temp; Puh$%;x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `uo, __y  
} ;AIc?Cg  
} y&oNv xG-  
} tmJgm5v  
c|AtBgvf  
} BFVAw  
?2#(jZ# 2  
归并排序: 909md|9K3  
4woO;Gm  
package org.rut.util.algorithm.support; l! v!hUb+  
.Cz %:%9  
import org.rut.util.algorithm.SortUtil; 2p!"p`b~  
W^\d^)  
/** `t (D!  
* @author treeroot JOb MZA$  
* @since 2006-2-2 }BJX/, H,  
* @version 1.0 X!tf#tl  
*/ wRtZ `o  
public class MergeSort implements SortUtil.Sort{ 3y A2WW  
,v9f~qh  
/* (non-Javadoc) <>Y?v C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &dR=?bz-A  
*/ bAwl:l\`  
public void sort(int[] data) { Q_p[k KH  
int[] temp=new int[data.length]; ?_g1*@pA  
mergeSort(data,temp,0,data.length-1); p fT60W[m  
} A],ooiq<  
$uj(G7_  
private void mergeSort(int[] data,int[] temp,int l,int r){ 4 !#a3=_  
int mid=(l+r)/2; )92r{%N  
if(l==r) return ; o[1ylzk}+  
mergeSort(data,temp,l,mid); 8K"+,s(%R  
mergeSort(data,temp,mid+1,r); -\,zRIOK  
for(int i=l;i<=r;i++){ o "z@&G" ^  
temp=data; $` VFdAe  
} $uDqqG(^  
int i1=l; TDtAmk  
int i2=mid+1; ]N{0:Va@D  
for(int cur=l;cur<=r;cur++){ A,gEM4  
if(i1==mid+1) beXNrf=bG  
data[cur]=temp[i2++]; sJG5/w  
else if(i2>r) hk>;pU(  
data[cur]=temp[i1++]; MJ{%4S{K,p  
else if(temp[i1] data[cur]=temp[i1++]; )C hqATKg  
else kA wNly  
data[cur]=temp[i2++]; i38[hQR9a  
} [I;^^#'P  
} 5W? v'"  
,*I@  
} g I]GUD-  
H%F>@(U  
改进后的归并排序: ciQZHH2  
^|MjJsn  
package org.rut.util.algorithm.support; Q{g;J`Z)p  
Tr&M~Lgb)  
import org.rut.util.algorithm.SortUtil; 2aN<w'pA  
U/l?>lOD\  
/** I=DxRgt  
* @author treeroot 7q =G&e7  
* @since 2006-2-2 @A<PkpNL  
* @version 1.0 bG F7Zh9  
*/ g\SrO {*  
public class ImprovedMergeSort implements SortUtil.Sort { ,XkGe   
9W ^xlid6  
private static final int THRESHOLD = 10; ~|ss*`CT  
"= / f$Xf  
/* ^wb:C[r!V  
* (non-Javadoc) >Z.\J2wM<j  
* 6uPcXd:8ZR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KhbYr$  
*/ q.YfC  
public void sort(int[] data) { ~]C%/gEh  
int[] temp=new int[data.length]; N_pUv   
mergeSort(data,temp,0,data.length-1); Q Fm|-j  
} p>vU?eF  
v *-0M  
private void mergeSort(int[] data, int[] temp, int l, int r) { @%ip7Y]e  
int i, j, k; PQN@JaD  
int mid = (l + r) / 2; +HT1ct+dI  
if (l == r) -_ C#wtC  
return; LUX*P7*B  
if ((mid - l) >= THRESHOLD) !k3e\v|  
mergeSort(data, temp, l, mid); yifY%!@Xu  
else :#~U<C@o  
insertSort(data, l, mid - l + 1); KJ2Pb"s  
if ((r - mid) > THRESHOLD) WI> P-D  
mergeSort(data, temp, mid + 1, r); `o]g~AKX  
else #|GSQJ$F)`  
insertSort(data, mid + 1, r - mid); e=vsuqGT  
eB> s=}|  
for (i = l; i <= mid; i++) { ew _-Eb  
temp = data; ?<Wb@6kh`  
} w;UqEC V  
for (j = 1; j <= r - mid; j++) { /H7&AiA  
temp[r - j + 1] = data[j + mid]; uj>WgU  
} g-c ;}qz  
int a = temp[l]; 0+Ta%H{  
int b = temp[r]; mm[2wfTE  
for (i = l, j = r, k = l; k <= r; k++) { tVrY3)c  
if (a < b) { F!zP<A "  
data[k] = temp[i++]; Q\ /uKQ  
a = temp; 05yZad*  
} else { W&(k!6<x  
data[k] = temp[j--]; !-`Cp3gqHr  
b = temp[j]; *]hBGr#6  
} 7 >iU1zy  
} g V5zSudW  
} D8&`R  
 j~j jX  
/** -=s(l.?Hm5  
* @param data O,aS`u &  
* @param l 2{-ZD ,(u7  
* @param i I&n  
*/ X@@8"@/u|*  
private void insertSort(int[] data, int start, int len) { yRp"jcD  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 98=wnWX 6$  
} H]4Hj  
} (Yo>Oh4  
} RrU BpqA  
} .#02 ngh  
['8!qr  
堆排序: _@S`5;4x  
 |@NiW\O  
package org.rut.util.algorithm.support; T91moRv  
niB `2 J  
import org.rut.util.algorithm.SortUtil; ARcB'z\r  
lL1k.& |5m  
/** ;XM{o:1Y[  
* @author treeroot F}Vr:~  
* @since 2006-2-2 2'=T[<nNB  
* @version 1.0 ifN64`AhRX  
*/ uqz]J$  
public class HeapSort implements SortUtil.Sort{ }D+}DPL{^  
X7k.zlH7T  
/* (non-Javadoc) @(r /dZc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  N?Lb  
*/ >pUtwIP  
public void sort(int[] data) { =UyLk-P w  
MaxHeap h=new MaxHeap(); jw-0M1B  
h.init(data); PkI:*\R  
for(int i=0;i h.remove(); 87hq{tTs]  
System.arraycopy(h.queue,1,data,0,data.length); &0f5:M{P  
} vfVj=DYj  
9z6XF]A  
private static class MaxHeap{ y;/VB,4V  
(o3 Iy  
void init(int[] data){ jKt7M>P  
this.queue=new int[data.length+1]; l;o1 d-n]  
for(int i=0;i queue[++size]=data; (#+^&1  
fixUp(size); 2eMTxwt*S  
} J!5$,%v  
} A}eOFu`  
*_>Lmm.yh  
private int size=0; B)d(TP,>  
pz"0J_xDM  
private int[] queue; bygx]RC[  
<&C]s b  
public int get() { p K0"%eA  
return queue[1];  *6q5S4 r  
} E>l~-PaZY  
9B;{]c  
public void remove() { lg^Z*&(  
SortUtil.swap(queue,1,size--); 7uzk p&+:  
fixDown(1); kc0E%odF.v  
} |i++0BU  
file://fixdown 6}r`/?"A1  
private void fixDown(int k) { iLSr*` o  
int j; (o`{uj{!  
while ((j = k << 1) <= size) { H%D$(W  
if (j < size %26amp;%26amp; queue[j] j++; UX7t`l2R  
if (queue[k]>queue[j]) file://不用交换 c/sC&i;%O  
break; dAuJXGo  
SortUtil.swap(queue,j,k); p5G?N(l  
k = j; &jmRA';sK  
} K6R.@BMN  
} TYW&!sm  
private void fixUp(int k) { wmTb97o  
while (k > 1) { d3xmtG {i  
int j = k >> 1; F6z%VWU  
if (queue[j]>queue[k]) ;+"+3  
break; V:y'Qf2M  
SortUtil.swap(queue,j,k); F w?[lS  
k = j; M3.do^ss  
} A0Qb 5e  
} $< JaLS  
}}59V&'t  
} 4 r45i:  
A}l3cP; `#  
} 7Op>i,HZk\  
v?geCe=ng  
SortUtil: v/_  
5aCgjA11  
package org.rut.util.algorithm; ?` ?)QE8  
 094o'k  
import org.rut.util.algorithm.support.BubbleSort; *WuID2cOI  
import org.rut.util.algorithm.support.HeapSort; zolt$p  
import org.rut.util.algorithm.support.ImprovedMergeSort; Z.Lc>7o  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7<*yS310  
import org.rut.util.algorithm.support.InsertSort; +~p88;  
import org.rut.util.algorithm.support.MergeSort; -qGa]a  
import org.rut.util.algorithm.support.QuickSort; o2F)%TDY  
import org.rut.util.algorithm.support.SelectionSort; ?{[ v+t#  
import org.rut.util.algorithm.support.ShellSort; J\b^)  
u ,KD4{!  
/** ?{ryGhb~  
* @author treeroot z:wutqru  
* @since 2006-2-2 %%[LKSTb  
* @version 1.0 x<ZJb  
*/ Te[n,\Nb  
public class SortUtil { XuFYYx~ ^3  
public final static int INSERT = 1; )P sY($ &  
public final static int BUBBLE = 2; Bx< <~[Ws}  
public final static int SELECTION = 3; lN Yt`xp  
public final static int SHELL = 4; @u6B;)'l  
public final static int QUICK = 5; M<v%CawS  
public final static int IMPROVED_QUICK = 6; t7aefV&_,  
public final static int MERGE = 7; XwJ7|cB  
public final static int IMPROVED_MERGE = 8; dl.p\t(1  
public final static int HEAP = 9; 3ca (i/c  
%WjXg:R  
public static void sort(int[] data) { 1n;0?MIZ  
sort(data, IMPROVED_QUICK); ?82xdp g  
} >G25m'&,7  
private static String[] name={ = %TWX[w  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9dx/hFA  
}; |Y ,b?*UF  
Hquc o  
private static Sort[] impl=new Sort[]{ bKMy|_  
new InsertSort(), Hx?;fl'G%  
new BubbleSort(), X aMJDa|M  
new SelectionSort(), W_"sM0 w  
new ShellSort(), g,!L$,/F  
new QuickSort(), N2;B-UF 7  
new ImprovedQuickSort(), f6&iy$@   
new MergeSort(), 0Qf,@^zL*  
new ImprovedMergeSort(), P/W XaE4  
new HeapSort() [M=7M}f;  
}; QTk}h_<u  
!$gR{XH$]  
public static String toString(int algorithm){ )"7iJb<E  
return name[algorithm-1]; AP 2_MV4W  
} Pd_U7&w,5  
!Dn,^  
public static void sort(int[] data, int algorithm) { -lY6|79bF  
impl[algorithm-1].sort(data); <Z mg#  
} 1~NT.tY  
qm/22:&v5  
public static interface Sort { V_.5b&@  
public void sort(int[] data); Q+{xZ'o"Z  
} A P?R"%  
&w_j/nW^'  
public static void swap(int[] data, int i, int j) { YJT&{jYi  
int temp = data; ~:s>aQ`!  
data = data[j]; 12b(A+M   
data[j] = temp; r@H /kD  
} . YAT:;L  
} m[~y@7AK<  
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