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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。 j-9Zzgr  
插入排序: pT'jX^BU  
OO*2>Qy~z  
package org.rut.util.algorithm.support; p~f=0K  
^F:Bj&0v[  
import org.rut.util.algorithm.SortUtil; `$i/f(t6`  
/** XWv;l)  
* @author treeroot yNOoAnGT W  
* @since 2006-2-2 +S ],){  
* @version 1.0 Uc d~-D  
*/ ]1&} L^a  
public class InsertSort implements SortUtil.Sort{ p}K.-S`MQ  
%hCd*[Z}j  
/* (non-Javadoc) $c}-/U 8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #8@o%%F d  
*/ .T\_4C  
public void sort(int[] data) { @23~)uiZa  
int temp; L=wpZ`@ y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?z0N- A2C2  
} 8ib%CYR  
} MkX=34oc^  
} }0~X)Vgm(  
xASH- 9  
} ]3]=RuQK2  
3H ,?ZFFGz  
冒泡排序: ,v_NrX=f?  
)>I-j$%=2  
package org.rut.util.algorithm.support; W.Z`kH *B  
E_T!|Q.  
import org.rut.util.algorithm.SortUtil; @^Yr=d ba  
p,7, tx  
/** \@m^w"Ij  
* @author treeroot :s>x~t8g#n  
* @since 2006-2-2 ubUVxYD?  
* @version 1.0 ]8CgHT[^7  
*/ {fa3"k_ke  
public class BubbleSort implements SortUtil.Sort{ P$5K[Y4f  
qB5.of[N!  
/* (non-Javadoc) QJ2D C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ':!aFMj^  
*/ ;"|QW?>$D  
public void sort(int[] data) { -rlCE-S  
int temp; C1o^$Q|j  
for(int i=0;i for(int j=data.length-1;j>i;j--){ #eIFRNRb)  
if(data[j] SortUtil.swap(data,j,j-1); r$W%d[pB  
} /X%+z5  
} KvXF zx|A  
} -;*lcY*  
} +F+M[ef<ws  
,-[z?dvO  
} hGJANA  
% O u'+A  
选择排序: ;Q,, i  
V G|FjD  
package org.rut.util.algorithm.support; CN:z *g  
;@xlrj+  
import org.rut.util.algorithm.SortUtil; |dhKeg_  
W_lXY Z<  
/** N5.B"l  
* @author treeroot (9Q@I8}Iy  
* @since 2006-2-2 %"^8$A?>,k  
* @version 1.0 1P?|.W_^1  
*/ a'(B}B=h  
public class SelectionSort implements SortUtil.Sort { Vrs?VA`v$  
qyP={E9A  
/* {r'+icvLX  
* (non-Javadoc) X}H?*'-  
* U=PTn(2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b_^y Ke^W  
*/ ?NR&3 q  
public void sort(int[] data) { $4q$!jB5  
int temp; LkXho>y  
for (int i = 0; i < data.length; i++) { ;Vpp1mk|  
int lowIndex = i; Lg{M<Q)4  
for (int j = data.length - 1; j > i; j--) { }:57Ym)7w  
if (data[j] < data[lowIndex]) { 7 j6<  
lowIndex = j; yM Xf&$C  
} u9fJ:a  
} y/+ IPR  
SortUtil.swap(data,i,lowIndex); Q89fXi0Ivb  
} Z)md]Twt  
} < n/ 2  
}$i/4?dYsQ  
} 9}5o> iR  
~*x 2IPi H  
Shell排序: 1!NrndJI  
*/2nh%>$  
package org.rut.util.algorithm.support; ~G 3txd  
9BAvE\o0  
import org.rut.util.algorithm.SortUtil; o59b#9  
KwU;+=_.  
/** }(7TiCwd  
* @author treeroot \440gH`  
* @since 2006-2-2 )D ~ 5  
* @version 1.0 K&eT*JW>  
*/ OX%#8Lx  
public class ShellSort implements SortUtil.Sort{ U7Oa 13Qz  
f-p$4%(  
/* (non-Javadoc) ~r~YR=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iBI->xU[U  
*/ Cz &3=),G  
public void sort(int[] data) { No`*->R  
for(int i=data.length/2;i>2;i/=2){ hZlHY9[t?  
for(int j=0;j insertSort(data,j,i); B<i(Y1n[  
} #p"$%f5Q_  
} FzNj':D  
insertSort(data,0,1); d0-4KN2  
} W^)mz,%x  
CK1A$$gnz  
/** IqiU  
* @param data 5RAhm0Op~.  
* @param j ^`k;~4'd  
* @param i 3?&v:H  
*/ Vl;zd=  
private void insertSort(int[] data, int start, int inc) { 5z =}o/?  
int temp; I]hjv  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U p6OCF  
} NfnPXsad  
} "=1gA~T  
} VXW*LEk  
p]ujip  
} (;&}\OX6nm  
KIp^| k7>  
快速排序: N`?|~g3  
AUu<@4R7  
package org.rut.util.algorithm.support; v>j,8E  
@Pf9;7,TV  
import org.rut.util.algorithm.SortUtil; {* P[dyu  
(Ldvx_  
/** UI"UBZZ$  
* @author treeroot 2gh=0%|\gx  
* @since 2006-2-2 |L`U2.hb  
* @version 1.0 <bb!BS&w  
*/ >I/@GX/  
public class QuickSort implements SortUtil.Sort{ ;!G#Y Oe  
$v #  
/* (non-Javadoc) /QWXEL/M=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y[]I!Bc  
*/ :)i,K>y3i  
public void sort(int[] data) { } C:i0Q  
quickSort(data,0,data.length-1); `hdff0  
} 1Iy1xiP  
private void quickSort(int[] data,int i,int j){ mt$rjk=  
int pivotIndex=(i+j)/2; '%wSs,HD  
file://swap v? OUd^  
SortUtil.swap(data,pivotIndex,j);  %S%IW  
q ajZ~oB{  
int k=partition(data,i-1,j,data[j]); #/o~h|g  
SortUtil.swap(data,k,j); 3E^qh03(  
if((k-i)>1) quickSort(data,i,k-1); }79O[&  
if((j-k)>1) quickSort(data,k+1,j); T~k@Z  
-gm5E qi  
} -fXQ62:S  
/** 9!(%Vf>  
* @param data yo/;@}g}  
* @param i g'b|[ q  
* @param j ^C1LQ Z  
* @return ge(,>xB  
*/ !#:5^":;  
private int partition(int[] data, int l, int r,int pivot) { `g3AM%3  
do{ #-@Uq6Y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <D3mt Q  
SortUtil.swap(data,l,r); \8=)X})  
} `FQ]ad Fz  
while(l SortUtil.swap(data,l,r); >~nr,V.q  
return l; yvj/u c  
} NLK1IH#  
T[)!7@4r  
} 5!fOc]]Ow  
r5N TTc  
改进后的快速排序: :\JCxS=EW  
\ a,}1FS  
package org.rut.util.algorithm.support; m$=}nI(H  
>mX6;6FF  
import org.rut.util.algorithm.SortUtil;  5{oc  
8QK8q: |  
/** JRw,${W  
* @author treeroot KILX?Pt[7  
* @since 2006-2-2 U 7.kYu  
* @version 1.0 tE_n>~Zs  
*/ ; cvMNU$fN  
public class ImprovedQuickSort implements SortUtil.Sort { | bRU=dg  
[K$5 Rm5  
private static int MAX_STACK_SIZE=4096;  $8rnf  
private static int THRESHOLD=10; '(FC  
/* (non-Javadoc) IycZ\^5*-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E& i (T2c  
*/ ~HhB@G!3  
public void sort(int[] data) { #Zw:&' QB  
int[] stack=new int[MAX_STACK_SIZE]; Bh' fkW3  
@, GL&$Y:W  
int top=-1; \Q(a`6U  
int pivot; Lv]%P.=[G  
int pivotIndex,l,r; "A"YgD#t  
Qy0w'L/@  
stack[++top]=0; bf0,3~G,P  
stack[++top]=data.length-1; o+&Om~W  
JR#4{P@A  
while(top>0){ j :B/ FL  
int j=stack[top--]; uR :EH.K  
int i=stack[top--]; R%RxF=@  
&TBFt;  
pivotIndex=(i+j)/2; Ba8=nGa4KY  
pivot=data[pivotIndex];  Q&xH  
c>K]$;}  
SortUtil.swap(data,pivotIndex,j); E&zf<Y  
#jW-&a  
file://partition I2WP/  
l=i-1; cJaA*sg  
r=j; k:Y\i]#yP  
do{ O^`EuaL  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0S$k;q  
SortUtil.swap(data,l,r); (&Rk#iU 2  
} TLVsTM8 P  
while(l SortUtil.swap(data,l,r); t&?{+?p: 9  
SortUtil.swap(data,l,j); /]3[|  
QR#>Ws  
if((l-i)>THRESHOLD){ K~vJ/9"|R  
stack[++top]=i; e' o2PW  
stack[++top]=l-1; Rtz~:v%  
} qsp.`9!  
if((j-l)>THRESHOLD){ F-wAQ:  
stack[++top]=l+1; rhbz|Uq  
stack[++top]=j; V^ n6~O  
} 2P^|juc)sU  
}+n|0xK  
} kEnGr6e  
file://new InsertSort().sort(data); up'`)s'  
insertSort(data); wK-VA$;:  
} } 7 o!  
/** r[i^tIv6As  
* @param data qIQ=OY=6  
*/ B223W_0"o  
private void insertSort(int[] data) { (l^7EpNs  
int temp; O'wmhLa"W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bpwA|H%{M  
} O|,9EOrP  
} iVn4eLK^v  
} JkJ @bh Eu  
`^SRg_rH=`  
} |T""v_q  
]6^<VC`5D  
归并排序: {IJ;)<>&VE  
"u7[[.P)  
package org.rut.util.algorithm.support; GLtd<M"  
H_ $?b  
import org.rut.util.algorithm.SortUtil; 8l5>t  
9y*] {IY  
/** dYrgL3'  
* @author treeroot ud `- w  
* @since 2006-2-2 ]##aAh-P4&  
* @version 1.0 hU""YP ~y  
*/ 9KU&M"Yq&i  
public class MergeSort implements SortUtil.Sort{ /ovVS6Ai  
d-_V*rYU  
/* (non-Javadoc) X?'cl]1?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +_7a/3kh  
*/ f"FFgQMkv  
public void sort(int[] data) { ad: qOm  
int[] temp=new int[data.length]; .g*N +T6O  
mergeSort(data,temp,0,data.length-1); X>[i<ei  
} (0NffM1  
mp8GHV  
private void mergeSort(int[] data,int[] temp,int l,int r){ 88osWo6rG  
int mid=(l+r)/2; -{cmi,oy  
if(l==r) return ; _eiqs  
mergeSort(data,temp,l,mid); i7.8H*z'  
mergeSort(data,temp,mid+1,r); tRdf:F\X  
for(int i=l;i<=r;i++){ .U0Gm_c0  
temp=data; X!Z)V)@J8  
} {oqbV#/&  
int i1=l; %42a>piev  
int i2=mid+1; %LMpErZO  
for(int cur=l;cur<=r;cur++){ G(a5@9F  
if(i1==mid+1) RhE~Rwbx  
data[cur]=temp[i2++]; tr<f ii 3<  
else if(i2>r) mF;mJq<d  
data[cur]=temp[i1++]; 9Y,JYc#  
else if(temp[i1] data[cur]=temp[i1++]; GP%V(HhN  
else }N[X<9^ Z  
data[cur]=temp[i2++]; zkRAul32|  
} Z&n[6aV'F  
} F<I*?${[  
;98&5X\u<  
} [nO3%7t@  
$K^l=X  
改进后的归并排序: #h[>RtP:  
(I}owr5:  
package org.rut.util.algorithm.support; w[-)c6JyE  
wN!\$i@E:  
import org.rut.util.algorithm.SortUtil; P?h1nxm`'  
T/'z,,Y  
/** $IE}fgA@5  
* @author treeroot Z0L($  
* @since 2006-2-2 AabQ)23R2  
* @version 1.0 =PRQ3/?5  
*/ ,- AF8BP  
public class ImprovedMergeSort implements SortUtil.Sort { Czjb.c:a.Y  
L\2"1%8Wj  
private static final int THRESHOLD = 10; H[~ D]RG}'  
"#O9ij  
/* d&Nnp jH}c  
* (non-Javadoc) ynIC (t  
* uB  I/3aQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g{]6*`/Z  
*/ #%;Uh  
public void sort(int[] data) { .]vb\NBK7  
int[] temp=new int[data.length]; |eu8;~A  
mergeSort(data,temp,0,data.length-1); ytIPY7E  
} oVpZR$  
I8gNg Z  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5 b} w  
int i, j, k; S&!(h {O  
int mid = (l + r) / 2; jKml:)k  
if (l == r) ?kO.>o  
return; g5nJ0=9  
if ((mid - l) >= THRESHOLD) +LRKS  
mergeSort(data, temp, l, mid); b e8T<F  
else 0/su`  
insertSort(data, l, mid - l + 1); {nKw<F2  
if ((r - mid) > THRESHOLD) :|W=2( >  
mergeSort(data, temp, mid + 1, r); UT\4Xk<  
else %P0  
insertSort(data, mid + 1, r - mid); 0&,D&y%  
hQ@k|3=Re  
for (i = l; i <= mid; i++) { t.9s49P  
temp = data; (.:*GUg  
} 3*h"B$g!  
for (j = 1; j <= r - mid; j++) { lJdBUoO  
temp[r - j + 1] = data[j + mid]; (fF8)4l  
} wo0j/4o  
int a = temp[l]; O^MI073Q>t  
int b = temp[r]; \t!~s^Oox  
for (i = l, j = r, k = l; k <= r; k++) { &4-;;h\H  
if (a < b) { 8 MO-QO  
data[k] = temp[i++]; +F)-n2Bi  
a = temp; ./F:]/Mt  
} else { =5\*Zh1  
data[k] = temp[j--]; %'iJVFF  
b = temp[j]; 1#=9DD$4  
} h <4`|Bg+  
} ,'s }g,L  
} ?62Im^1/  
qLCNANWnd  
/** 9A"s7iJ)  
* @param data 'SXHq>#gA  
* @param l o.ZR5`.  
* @param i a.V5fl0?I@  
*/ CV @P +  
private void insertSort(int[] data, int start, int len) { fd )v{OC  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P2'N4?2  
} (mIjG)4t  
} p]mN)  
} {mJ' Lb0;  
} r:bJU1P1$s  
'[WL8,.Q  
堆排序: 9f! M1  
~$u9  
package org.rut.util.algorithm.support; }:2##<"\t  
^m#tWb)f  
import org.rut.util.algorithm.SortUtil; T [SK>z  
)$!b`u  
/** i#la'ICwJ  
* @author treeroot eUy*0  
* @since 2006-2-2 &[[r|  
* @version 1.0 Nm"P8/-09  
*/ NBPP?\1  
public class HeapSort implements SortUtil.Sort{ !i"zM}  
`6~0W5  
/* (non-Javadoc) :K6JrS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W0f^!}f(  
*/ PLkS-B  
public void sort(int[] data) { yJI~{VmU7  
MaxHeap h=new MaxHeap(); 3=d%WPgQ  
h.init(data); +4:eb)e  
for(int i=0;i h.remove(); ^sf,mM~D  
System.arraycopy(h.queue,1,data,0,data.length); !5} }mf  
} M{L- V  
s`$}xukT  
private static class MaxHeap{ &3t973=  
H7Q$k4\l  
void init(int[] data){ /9pxEidVAS  
this.queue=new int[data.length+1]; ?h[HC"V/2  
for(int i=0;i queue[++size]=data; {'M<dI$  
fixUp(size); -Rpra0o. C  
} <[[yV  
} yUnV%@.  
7W)W9=&BT  
private int size=0; \E?3nQM  
nB`|VYmOP1  
private int[] queue; %&6Q Uv^  
D|ceZ <9x  
public int get() { 1D 'r;`z  
return queue[1]; 8{ZTHY -  
}  @/s|<*  
5?^#v  
public void remove() { r]!#v{#.  
SortUtil.swap(queue,1,size--); k ;^$Pd?t  
fixDown(1); Uoe{,4T  
} 4:/V|E\D  
file://fixdown 4gen,^Ij  
private void fixDown(int k) { ^.6yzlY  
int j; )g'J'_Sl  
while ((j = k << 1) <= size) { V*@aE  
if (j < size %26amp;%26amp; queue[j] j++; RB %+|@c  
if (queue[k]>queue[j]) file://不用交换 t1w]L  
break; +;~N; BT  
SortUtil.swap(queue,j,k); WAxNQfEe  
k = j; X<,QSTP  
} }[akj8U  
} #KiJ{w'  
private void fixUp(int k) { W_}j~[&  
while (k > 1) { I(*3n"  
int j = k >> 1; I,hw0e  
if (queue[j]>queue[k]) :6Nb,Hh~  
break; 1%v6d !  
SortUtil.swap(queue,j,k); |<u+Xi ~  
k = j; cANt7  
} cTq@"v di  
} 4G,FJjE`p  
 2 q4p-  
} 9K@ I  
&\ 9%;k  
} J3mLjYy  
J]U_A/f  
SortUtil: <mFDC?j  
m+!.H\  
package org.rut.util.algorithm; J!l/.:`6  
<W #G)c0  
import org.rut.util.algorithm.support.BubbleSort; [_JdV(]$  
import org.rut.util.algorithm.support.HeapSort; vi}16V84l  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ca'BE#q  
import org.rut.util.algorithm.support.ImprovedQuickSort; 44 u)F@)  
import org.rut.util.algorithm.support.InsertSort; Yk|6?e{+)  
import org.rut.util.algorithm.support.MergeSort; +g g_C'"  
import org.rut.util.algorithm.support.QuickSort; !CU-5bpu  
import org.rut.util.algorithm.support.SelectionSort; D U\ytD`u  
import org.rut.util.algorithm.support.ShellSort; YIRe__7-NU  
n}UJ - \$  
/** q=W.82.U  
* @author treeroot >+J}mo=*  
* @since 2006-2-2 wnC} TWxX  
* @version 1.0 !An?<Sv$  
*/ fM ID}S  
public class SortUtil { zb{79Os[B  
public final static int INSERT = 1; A M[f  
public final static int BUBBLE = 2; zd[k|lj  
public final static int SELECTION = 3; 3JGrJ!x  
public final static int SHELL = 4; D\_nqx9O  
public final static int QUICK = 5; 3WP\MM  
public final static int IMPROVED_QUICK = 6; RFRXOyGz$  
public final static int MERGE = 7; Ef`'r))  
public final static int IMPROVED_MERGE = 8; B{)#A?Rh.  
public final static int HEAP = 9; \ UrD%;sq  
h,$CJdDY]  
public static void sort(int[] data) { HDV-qYD|O~  
sort(data, IMPROVED_QUICK); R5ra*!|L)  
} ~2k.x*$  
private static String[] name={ z0rYzn?MR  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cjN)3L{  
}; F\r"Y)|b=  
v)Y)tu>  
private static Sort[] impl=new Sort[]{ K@7%i|H  
new InsertSort(), U*~-\jN1pb  
new BubbleSort(), , @jtD*c)  
new SelectionSort(), DujVV(+I  
new ShellSort(), LG:k}z/T  
new QuickSort(), mI7lv;oN<5  
new ImprovedQuickSort(), <XLaJ;j  
new MergeSort(), d0)]^4HT|y  
new ImprovedMergeSort(), ?+.mP]d_  
new HeapSort() #A5X ,-4G  
}; UE^o}Eyg  
=Q<VU/  
public static String toString(int algorithm){ aM $2lR])J  
return name[algorithm-1]; ')v,<{  
} O4X03fUx  
gbzBweWF  
public static void sort(int[] data, int algorithm) { sY!JB7!j  
impl[algorithm-1].sort(data); Ypzmc$Xfu  
} F{jxs/~  
J+t51B(a  
public static interface Sort { O(I^:_eH  
public void sort(int[] data); Xr K29a  
} %w^*7Oi  
A{s -g>s  
public static void swap(int[] data, int i, int j) { t[TM\j0jW  
int temp = data; iQ" LIeD  
data = data[j]; 3g4=as4w  
data[j] = temp; fJr EDj4(  
} Cdz?+hb  
} oW^x=pS9  
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