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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^O83[S  
插入排序: !&VfOx:PN  
8?+|4:#=*J  
package org.rut.util.algorithm.support; .Fn|Okn^gr  
hk~/W}sI  
import org.rut.util.algorithm.SortUtil; >aVgI<  
/** ]b4IO4T  
* @author treeroot $,4h\>1WP  
* @since 2006-2-2 @gI1:-chB  
* @version 1.0 fM;,9  
*/ Rg?6eN  
public class InsertSort implements SortUtil.Sort{ zU?O)w1'  
/}?7Eni  
/* (non-Javadoc) 2zTi/&K&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <sH}X$/  
*/ !$Nj!  
public void sort(int[] data) { 9-ozrw8t  
int temp; bU! v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cl~Yx 4  
} IP62|~Ap  
} YQ+hQ:4-  
} ]i*ucW4  
&~,4$& _  
} =01X  
p-[WpY3  
冒泡排序: ZL!u$)(V  
c$g@3gL  
package org.rut.util.algorithm.support; t2N W$ -E  
,>  zEG  
import org.rut.util.algorithm.SortUtil; ||Zup\QB  
9@ tp#  
/** cSb;a\el$  
* @author treeroot ywa*?3?c  
* @since 2006-2-2 S0,\{j  
* @version 1.0 ffrIi',@  
*/ {OU|'  
public class BubbleSort implements SortUtil.Sort{ {a7~P0$  
x e`^)2z  
/* (non-Javadoc) vi,hWz8WB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Wu-&Lb  
*/ L:G#>  
public void sort(int[] data) { ZwmucY%3  
int temp; -#|D>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ q A)O kR'm  
if(data[j] SortUtil.swap(data,j,j-1); k ka5=u  
} ;5Sdx5`_  
} @]=40Yj~w  
} WgtLKRZ\  
} L|=5jn9 :  
jJ ,_-ui  
} 6Z2,:j;  
 7GgZ: $d  
选择排序: $83B10OQ&L  
'/W$9jm  
package org.rut.util.algorithm.support; g68p9#G  
)[Y B&  
import org.rut.util.algorithm.SortUtil; %M(RV_R+6  
c3vb~l)  
/** "s+4!,k  
* @author treeroot r"7n2   
* @since 2006-2-2 ;P@]7vkff  
* @version 1.0 b9.M'P\  
*/ >Fel) a  
public class SelectionSort implements SortUtil.Sort { </h^%mnd  
>L7s[vKn  
/* ^J'_CA  
* (non-Javadoc) / ;]5X  
* 8H!QekQZ]\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rpR${%jc  
*/ `9~ %6N?7#  
public void sort(int[] data) { ,WT>"9+  
int temp; 3N7H7(IR  
for (int i = 0; i < data.length; i++) { )g0fN+Mb  
int lowIndex = i; {0zn~+  
for (int j = data.length - 1; j > i; j--) { OZ[YB  
if (data[j] < data[lowIndex]) { Yd^@Ei9  
lowIndex = j; 9njwAKF?  
} !gsvF\XDM  
} ^kez]>   
SortUtil.swap(data,i,lowIndex); rd%%NnT"  
} *IG$"nu  
} ]\$/:f-2  
+# W94s~0V  
} Gz[yD ~6a  
r~4uIUE{  
Shell排序: 7u):J  
zzqJeIS  
package org.rut.util.algorithm.support; Uzu6>yT  
d$dy6{/YD  
import org.rut.util.algorithm.SortUtil; ahB qYA K9  
sibYJKOy  
/** ]-fkmnmWX  
* @author treeroot :GHv3hn5  
* @since 2006-2-2 m>>.N?  
* @version 1.0 )9QtnM  
*/ \;LDE`Q_x  
public class ShellSort implements SortUtil.Sort{ 7>vm?a^D2&  
#&Sr;hAJ  
/* (non-Javadoc) *XVwTW[a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A4K.,bZ   
*/ {$*N1$(%  
public void sort(int[] data) { |c_qq Bd  
for(int i=data.length/2;i>2;i/=2){ jc} G+|`  
for(int j=0;j insertSort(data,j,i); TJ|Jv8j<s  
} vF$i"^;tJ;  
} 2-&EkF4p'  
insertSort(data,0,1); .KsR48g8  
} wj|Zn+{"nF  
Vz{+3vfra6  
/** ]Bw0Qq F#  
* @param data sDY~jP[Oa  
* @param j :6^7l/p  
* @param i ?$r`T]>`2  
*/ J=4>zQLW  
private void insertSort(int[] data, int start, int inc) { PNU(;&2<  
int temp; E-e(K8R  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $6hPTc<C  
} =YO ]m<  
} -%K!Ra\W  
} jmok]-pC  
f8 d 3ZK  
} *GP2>oEM  
jG5HW*>k0  
快速排序: o5<<vvdA  
'%)R}wgV  
package org.rut.util.algorithm.support; *{o7G  a  
[}RoZB&I  
import org.rut.util.algorithm.SortUtil; 1J@Iekat  
vqf$("  
/** <Au2e  
* @author treeroot iCt.rr~;V  
* @since 2006-2-2 ZzT=m*tQ&  
* @version 1.0 niVR!l  
*/ !xM5 A[f  
public class QuickSort implements SortUtil.Sort{ 7*/{m K)  
5=dL`  
/* (non-Javadoc) B@,9Cx564  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k$EVr([  
*/ K|& f5w  
public void sort(int[] data) { Z6jEj9?O  
quickSort(data,0,data.length-1); Mf}M/Fh  
} wBPo{  
private void quickSort(int[] data,int i,int j){ 8~sP{V%  
int pivotIndex=(i+j)/2; )8Va%{j  
file://swap ~6vz2DuB=  
SortUtil.swap(data,pivotIndex,j); >yIJ8IDF  
5~Y`ikwxL  
int k=partition(data,i-1,j,data[j]); "L~(%Nx3  
SortUtil.swap(data,k,j); 6|TSH$w_  
if((k-i)>1) quickSort(data,i,k-1); O 4 !$  
if((j-k)>1) quickSort(data,k+1,j); J 3!~e+wn  
|s|}u`(@9  
} 98m|&7  
/** =;}W)V|X)S  
* @param data Zed Fhm  
* @param i nK&]8"  
* @param j xU *:a[g  
* @return !-gU~0  
*/ 8fR(y~_gF  
private int partition(int[] data, int l, int r,int pivot) { K*6"c.D  
do{ k[=qx{Osx%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0lw>mxN  
SortUtil.swap(data,l,r); X/!_>@`7?  
} PnsBDf%v  
while(l SortUtil.swap(data,l,r); Jh[0xb  
return l; GK?ual1  
} HpwMm^  
V\V /2u5-  
} |<%!9Z  
KKeMi@N  
改进后的快速排序: {]vD@)k  
>1y6DC  
package org.rut.util.algorithm.support; jDzQw>T X  
1Pf(.&/9_  
import org.rut.util.algorithm.SortUtil; ]@q%dsz  
en<mm#Ab  
/** #-hO\ QdC  
* @author treeroot  *kr/,_K  
* @since 2006-2-2 >rG>Bz^Pu  
* @version 1.0 LQ0/oYmNc  
*/ yNu_>!Cp5  
public class ImprovedQuickSort implements SortUtil.Sort { ?^|`A}q#  
18g_v"6o  
private static int MAX_STACK_SIZE=4096; Hl*vS  
private static int THRESHOLD=10; Bx\&7|,x  
/* (non-Javadoc) V0ze7tSG[f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8^mE<  
*/ |rmelQ-  
public void sort(int[] data) { p [O6  
int[] stack=new int[MAX_STACK_SIZE]; A~ya{^}  
sXKkZ+2q  
int top=-1; lU WXXuO]  
int pivot; LZ*8YNp1'  
int pivotIndex,l,r; > mGH4{H  
8\"<t/_ W  
stack[++top]=0; Kg@'mG  
stack[++top]=data.length-1; f%Q)_F[0D4  
+`y(S}Z  
while(top>0){ p|UL<M9{a]  
int j=stack[top--]; jnH\}IB  
int i=stack[top--]; XxqGsGx4  
<}a?<):S  
pivotIndex=(i+j)/2; +X?ErQm  
pivot=data[pivotIndex]; ~ELY$G.xl  
=w2 4(S  
SortUtil.swap(data,pivotIndex,j); PK*Wu<<  
\0$+*ejz  
file://partition Q PH=`s  
l=i-1; A=|XlP$6  
r=j; 3^xUN|.F*V  
do{ {I#_0Q,i  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); J~~\0 u  
SortUtil.swap(data,l,r); uo F.f$%"  
} ^$c#L1 C  
while(l SortUtil.swap(data,l,r); |OQ]F  
SortUtil.swap(data,l,j); 8f@}-  
l.YE@EL  
if((l-i)>THRESHOLD){ fHt\KP  
stack[++top]=i; 'K[ml ?_  
stack[++top]=l-1; bQ< qdGa  
} <'y<8gpM  
if((j-l)>THRESHOLD){ }\4yU=JP K  
stack[++top]=l+1; 24sMX7Q,i  
stack[++top]=j; 5Rqdo\vE  
} /Vlc8G  
"~KDm(D  
} PN* .9;5Z  
file://new InsertSort().sort(data); )ycI.[C  
insertSort(data); -H| 9 82=  
} U ?[ (  
/** K7}.#*% ~  
* @param data <'Q6\R}:vC  
*/ ]xC56se  
private void insertSort(int[] data) {  *7m lH  
int temp; TG2#$Bq1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {DO9%ej)  
} 0B6!$) *-i  
} ~(kEGEF  
} os V6=  
J,W<ha*  
} +{UY9_~\3  
"ubp`7%67  
归并排序: `[ZswLE  
U%3N=M  
package org.rut.util.algorithm.support; 6v%yU3l  
mxNd  
import org.rut.util.algorithm.SortUtil; x#{!hL 5G  
aNbS0R>l  
/** /VR~E'Cy%  
* @author treeroot ;hj lRQ\  
* @since 2006-2-2 F^Ut ZG+  
* @version 1.0 :e<jD_.X  
*/ MU<(O}  
public class MergeSort implements SortUtil.Sort{ 6?Ncgj &@  
0R x#Fm  
/* (non-Javadoc)  ?kjQ_K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g 9,"u_  
*/ F^,:p.ihm<  
public void sort(int[] data) { {3Inj8a=?A  
int[] temp=new int[data.length]; 1U\ap{z@  
mergeSort(data,temp,0,data.length-1); Q%e<0t7  
} ?m7:@GOE1  
l 9K`+c+t  
private void mergeSort(int[] data,int[] temp,int l,int r){ I~,.@{4  
int mid=(l+r)/2; RpdUR*K9x  
if(l==r) return ; YQ0#j'}/  
mergeSort(data,temp,l,mid); ^[<BMk  
mergeSort(data,temp,mid+1,r); f*k7 @[rSv  
for(int i=l;i<=r;i++){ qxZIH  
temp=data; y)kxR  
} >Kgw2,y+  
int i1=l; q,v<:sS9T  
int i2=mid+1; $6"sRI6u  
for(int cur=l;cur<=r;cur++){ 9A |A@E#  
if(i1==mid+1) /=2aD5r  
data[cur]=temp[i2++]; jAJ='|[X\  
else if(i2>r) zB.cOMx  
data[cur]=temp[i1++]; LV}R 9f  
else if(temp[i1] data[cur]=temp[i1++]; fA=Z):w  
else 9QQ XB-  
data[cur]=temp[i2++]; Xv1vq -cM  
} m*^)#  
} zt.k Nb  
OqtGKda  
} ^*.[b  
Ai/X*y:[?  
改进后的归并排序: (j}7|*.  
<J509j  
package org.rut.util.algorithm.support; j>8DaEfwx  
{FI zoR"  
import org.rut.util.algorithm.SortUtil; )uqzu%T  
rPH7 ]]  
/** i>M%)HN  
* @author treeroot =\Q< TY  
* @since 2006-2-2 ~${~To8$CW  
* @version 1.0 OG$n C  
*/  "'4  
public class ImprovedMergeSort implements SortUtil.Sort { j6%W+;{/pj  
Q-x>yau"  
private static final int THRESHOLD = 10; #XQ/y}(  
^s~)"2 g  
/* "GMU~594  
* (non-Javadoc) ZP"; B^J  
* <83Ky;ry  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~ l}f@@u  
*/ !y_FbJ8KC  
public void sort(int[] data) { gP_N|LuF"  
int[] temp=new int[data.length];  : (UK'i  
mergeSort(data,temp,0,data.length-1); tN#C.M7.'7  
} L0w6K0J4  
/@:X0}L  
private void mergeSort(int[] data, int[] temp, int l, int r) { >n7h%c  
int i, j, k; P2n8HFi  
int mid = (l + r) / 2; cSL6V2F  
if (l == r) *\ii +f-  
return; !}Xoqamm  
if ((mid - l) >= THRESHOLD) Snr(<u  
mergeSort(data, temp, l, mid); l";Yw]:^  
else f' A$':Y  
insertSort(data, l, mid - l + 1); fHiL%]z  
if ((r - mid) > THRESHOLD) ElO|6kOBYG  
mergeSort(data, temp, mid + 1, r); ^4=#, K  
else rK gl:s j+  
insertSort(data, mid + 1, r - mid); [O3:?BNY  
9NTNulD>P  
for (i = l; i <= mid; i++) { ni;)6,i  
temp = data; n)yDep]$G  
} M?l v  
for (j = 1; j <= r - mid; j++) { bjVk9XvH6  
temp[r - j + 1] = data[j + mid]; v3"6'.f;bY  
} "Enb   
int a = temp[l]; 4cQP+n  
int b = temp[r]; KV0*dB;  
for (i = l, j = r, k = l; k <= r; k++) { k^ <]:B  
if (a < b) { !wp1Df[  
data[k] = temp[i++]; =$OGHc  
a = temp; suEK;Bk9  
} else { bM?gAY]mB8  
data[k] = temp[j--]; 7O1MC 8{  
b = temp[j]; '$FF/|{  
} ] SJ#:7  
} XG|N$~N+2  
} } =OE.cf@  
Kx9u|fp5  
/** E2DfG^sGV  
* @param data YR'F]FI  
* @param l ]:e_Y,@  
* @param i izP )t  
*/ C0N :z.)4  
private void insertSort(int[] data, int start, int len) { L:HvrB~  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (z sG!v  
} s{b\\$Rb  
} Jc":zR@5  
} O9daeIF0#  
} GDSV:]hL  
}=X: F1S  
堆排序: Q6m8N  
q|*^{(tWs  
package org.rut.util.algorithm.support; 3(e_2v  
[9sEc  
import org.rut.util.algorithm.SortUtil; 0AHQ(+Ap  
tV !?Ol  
/** t:2DB)  
* @author treeroot $udhTI#,  
* @since 2006-2-2 v,i|:;G  
* @version 1.0 4jXo5SkEJ  
*/ & /8Tth86  
public class HeapSort implements SortUtil.Sort{ gqS9{K(f  
0+SDFh  
/* (non-Javadoc) tWn dAM(U7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a&>NuMDI  
*/ QIiy\E%  
public void sort(int[] data) { SnE^\I^O  
MaxHeap h=new MaxHeap(); ?^voA.Bv<  
h.init(data); d,GOP_N8I  
for(int i=0;i h.remove(); "3^tVX%$\[  
System.arraycopy(h.queue,1,data,0,data.length); 9FDu{4:  
} vRe{B7}p;  
F! =l r  
private static class MaxHeap{ lpG%rN!  
^/BGOBK  
void init(int[] data){ ",,#q  
this.queue=new int[data.length+1]; Mj;V.Y  
for(int i=0;i queue[++size]=data; m* m),mZ"  
fixUp(size); -,bnj^L  
} uw\@~ ,d  
} %u!=<yn'  
xr'1CP  
private int size=0; [6a-d> e{  
l!*_[r   
private int[] queue; +gd5&  
Ef]Hpjvp  
public int get() { 3en 9TB  
return queue[1]; mG S4W;  
} :|;@FkQ  
coAXYn  
public void remove() { i}vJI}S.$  
SortUtil.swap(queue,1,size--); n#+EG3  
fixDown(1); FJeh=\  
} @jn&Wf?  
file://fixdown nL 5tHz:e  
private void fixDown(int k) { BAQ-1kSz  
int j; -PV1x1|  
while ((j = k << 1) <= size) { x*Z'i<;B  
if (j < size %26amp;%26amp; queue[j] j++; )9H5'Wh#  
if (queue[k]>queue[j]) file://不用交换 dk&e EDvfd  
break; z>N[veX%  
SortUtil.swap(queue,j,k); Om*QN]lGq  
k = j; CY o m  
} ILm +o$o ~  
} (H_dZL  
private void fixUp(int k) { V|u2(*  
while (k > 1) {  uo`R  
int j = k >> 1; yX!u&  
if (queue[j]>queue[k]) I/7!5Z*  
break; t^'nh 1=  
SortUtil.swap(queue,j,k); F'XQoZ* 1  
k = j; M">v4f&K1!  
} jz8u'y[n7  
} cUq]PC$|  
8R*;8y_  
} -m@c{&r  
 Qxz[  
} h  /  
_r-LX"  
SortUtil:  w*`:v$  
z_>~=Mm  
package org.rut.util.algorithm; |2do8z  
tz):$1X_  
import org.rut.util.algorithm.support.BubbleSort; Ze V@ X  
import org.rut.util.algorithm.support.HeapSort; S"!6]!~^  
import org.rut.util.algorithm.support.ImprovedMergeSort; ZN8j})lE  
import org.rut.util.algorithm.support.ImprovedQuickSort; # `=Zc7gf  
import org.rut.util.algorithm.support.InsertSort; `4*I1WZW  
import org.rut.util.algorithm.support.MergeSort; b~zSsws.  
import org.rut.util.algorithm.support.QuickSort; 'OnfU{Ai  
import org.rut.util.algorithm.support.SelectionSort; S# ]] h/  
import org.rut.util.algorithm.support.ShellSort; ]q"&V\b  
hF$`=hE,F~  
/** .{ v$;g  
* @author treeroot SXw r$)4_  
* @since 2006-2-2 k3bQ32()  
* @version 1.0 =7V4{|ESfy  
*/ SrKitSG  
public class SortUtil { uq3pk3 )W9  
public final static int INSERT = 1; #}#m\=0  
public final static int BUBBLE = 2; ob>)F^.iS  
public final static int SELECTION = 3; eB~\~@  
public final static int SHELL = 4;  u 8o!  
public final static int QUICK = 5; JwMRquQv  
public final static int IMPROVED_QUICK = 6; @V:K]M 5  
public final static int MERGE = 7; Aits<0  
public final static int IMPROVED_MERGE = 8; h@`Rk   
public final static int HEAP = 9; O=A R`r#u  
g}%ODa !H  
public static void sort(int[] data) { ;7\Fx8"s[  
sort(data, IMPROVED_QUICK); h8(#\E  
} ZuGSRGX'  
private static String[] name={ KZ2[.[(Ph  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3A,N1OXG  
}; WRZpu95v  
_s;y0$O  
private static Sort[] impl=new Sort[]{ Q# hRnM  
new InsertSort(), 6Rfv3  
new BubbleSort(), !` 1h *}  
new SelectionSort(), eV"%(<{  
new ShellSort(), Ke4oLF2  
new QuickSort(), 7RT{RE  
new ImprovedQuickSort(), wm@j(h4  
new MergeSort(), Onx6Fy]L  
new ImprovedMergeSort(), 3#t9pI4  
new HeapSort() $$ND]qM$M  
}; #ksDU  
$^Xxn.B9  
public static String toString(int algorithm){ ~);4O8~.  
return name[algorithm-1]; ~DD _n  
} "]"0d[d  
kZF]BPh.  
public static void sort(int[] data, int algorithm) { \oPe" k=  
impl[algorithm-1].sort(data); _4>DuklH,  
} ;"&?Okz  
br=e+]C Y)  
public static interface Sort { !sX$?P%U  
public void sort(int[] data); jnqp" Ult>  
} LGL;3EI  
k*A(7qQA`4  
public static void swap(int[] data, int i, int j) { @_`r*Tb)dM  
int temp = data; uL)MbM]  
data = data[j]; im*sSz 0 (  
data[j] = temp; \>S.nW  
} PSc=k0D  
} $R}C(k ;?  
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