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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。 s[4 !R&b  
插入排序: nF$)F?||  
x{V>(d'p  
package org.rut.util.algorithm.support; |qDfFGYf  
i6 ?JX@I  
import org.rut.util.algorithm.SortUtil; ZMg9Qt  
/** $yFuaqG`Wo  
* @author treeroot 1>y=i+T/b  
* @since 2006-2-2  89=JC[c  
* @version 1.0 >C&<dO#i  
*/ "mDrJTWa  
public class InsertSort implements SortUtil.Sort{ Q]UYG(  
WCTW#<izm  
/* (non-Javadoc) ^>{;9 lo<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VDjIs UUX  
*/ B^~Bv!tHWr  
public void sort(int[] data) { kdPm # $-  
int temp; .r%|RWs6W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^GaPpm  
} WTv\HI2X !  
} 6ilC#yyp  
}  ^-*Tn  
y"L`bl A9}  
} cYy @  
7"NJraQ6  
冒泡排序: fA0=Y,pzv  
)r,R!8  
package org.rut.util.algorithm.support; 4U;XqUY /  
y{I[}$k  
import org.rut.util.algorithm.SortUtil; ~'QeN%qadP  
@:QdCG+  
/** 9Y@?xn.\  
* @author treeroot !Fg4Au  
* @since 2006-2-2 xXxh3 k\  
* @version 1.0 nC.2./OwMf  
*/ S Ljf<.S  
public class BubbleSort implements SortUtil.Sort{ x`6^+>y^  
JrWBcp:Y  
/* (non-Javadoc) n.XhK_6n]M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KP d C9H  
*/ /j69NEl  
public void sort(int[] data) { ^8l3j4  
int temp; bb/?02*)H  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8u5 'g1M  
if(data[j] SortUtil.swap(data,j,j-1); chMc(.cN0  
} [H:GKhPC`  
} dGD^op,6g  
} /b:t;0G  
} &<|-> *v  
/`O]etr`d  
} Li-(p"  
LUDJPIk  
选择排序: K7xWE,y  
kAB+28A  
package org.rut.util.algorithm.support; Z'*Z@u3  
waWKpk1Wo  
import org.rut.util.algorithm.SortUtil; W6Aj<{\F  
vG<pc_ak  
/** <k\H`P  
* @author treeroot 71.\`'  
* @since 2006-2-2 E_D ^O  
* @version 1.0 ZAX0n!db3  
*/ d=Df.H+3  
public class SelectionSort implements SortUtil.Sort { ig2 +XR#%  
^>X)"'0+  
/* %t`SSW7I  
* (non-Javadoc) pPyvR;NJ  
* Y%0d\{@a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lTr*'fX  
*/ "rx^M*"  
public void sort(int[] data) { jH&_E'XMX  
int temp; M. )}e7  
for (int i = 0; i < data.length; i++) { '{0[&i*  
int lowIndex = i; /j' B\,  
for (int j = data.length - 1; j > i; j--) { 6mu<&m@  
if (data[j] < data[lowIndex]) { %/y`<lJz(  
lowIndex = j; ) Ab6!"'  
} C1T=O  
} ',JrY)  
SortUtil.swap(data,i,lowIndex); wMz-U- z  
} ss`P QN  
} JYwyR++uo  
Ts(t:^  
} /}w#Jk4pD  
fimb]C I|x  
Shell排序: }qiF^D}  
JAlU%n?R  
package org.rut.util.algorithm.support; (A29Z H  
hhpv\1h#  
import org.rut.util.algorithm.SortUtil; l]_b;iux  
d /B'[Ur  
/** F&QTL-pQW  
* @author treeroot X*sr  
* @since 2006-2-2 u R\m`  
* @version 1.0 E &7@#'l  
*/ M%$ DT  
public class ShellSort implements SortUtil.Sort{ z wL3,!t  
 9<|m4  
/* (non-Javadoc) P</s)"@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FXx.$W  
*/ u12zRdn  
public void sort(int[] data) { -<^jGrb  
for(int i=data.length/2;i>2;i/=2){ [J0*+C9P*  
for(int j=0;j insertSort(data,j,i); Ue(r} *  
} oi2J :Y4  
} *Ph]F$ZP  
insertSort(data,0,1); }A{_L6qx  
} iQt!PMF.  
%O#)Nq>mp  
/** )YuRjBcp,"  
* @param data dQ:?<zZ  
* @param j #gh p/YoTq  
* @param i q0&Wk"X%rr  
*/ NB E pM  
private void insertSort(int[] data, int start, int inc) { NuU'0_")/  
int temp; Hu[]h]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,I]7g4~  
} ~32Pjk~  
} jm[}M  
} U.: sK*  
{  |s/]W  
} ?^|QiuU:n  
+p3 Z#KoC  
快速排序: |K%}}g[<e;  
sf`PV}a1  
package org.rut.util.algorithm.support; sltk@  
=f>HiF  
import org.rut.util.algorithm.SortUtil;  }mKwFVZ  
@0$}? 2  
/** t\8&*(&3F  
* @author treeroot Yv^p =-E  
* @since 2006-2-2 lr WLN  
* @version 1.0 8Jr1_a  
*/ R*087X7 N|  
public class QuickSort implements SortUtil.Sort{ 0h22V$  
AM'gnP>  
/* (non-Javadoc) I~)cYl:|G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) & 1[y"S  
*/ > @+#  
public void sort(int[] data) { 8W;2oQN7  
quickSort(data,0,data.length-1); F"'n4|q4n  
} SET-8f  
private void quickSort(int[] data,int i,int j){ =+<d1W`>0  
int pivotIndex=(i+j)/2; ~AQ>g#|%  
file://swap 3qtr9NI  
SortUtil.swap(data,pivotIndex,j); b$Ln} <  
[Eu];  
int k=partition(data,i-1,j,data[j]); vI Vr@1S  
SortUtil.swap(data,k,j); (= 9 wo  
if((k-i)>1) quickSort(data,i,k-1); MAnp{  
if((j-k)>1) quickSort(data,k+1,j); qK?$= h.  
qgx?"$ Z  
} yyP'Z~0  
/** nLj&Uf&  
* @param data dAL3.%  
* @param i e0 u,zg+m  
* @param j z1vw'VT>  
* @return 78 d_io}w  
*/ \0ov[T N.>  
private int partition(int[] data, int l, int r,int pivot) { E"#Xc@  
do{ -f?Ah  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); DK6? E\<  
SortUtil.swap(data,l,r); OQScW2a&  
} WDkuB  
while(l SortUtil.swap(data,l,r); ZB[k{Y  
return l; /ZW&0 E  
} 'eyJS`  
#r<?v  
} 8:thWGLN  
SdJ/ 4&{ !  
改进后的快速排序: 02\JzBU  
=X-Tcj?3g  
package org.rut.util.algorithm.support; gcf6\f}\<  
BAV>o|-K  
import org.rut.util.algorithm.SortUtil; so+4B1$)q  
qaVy.  
/** +7U  
* @author treeroot nX^1$')gp  
* @since 2006-2-2 l?8)6z#Zl  
* @version 1.0  f:wd&V  
*/ c0ez/q1S  
public class ImprovedQuickSort implements SortUtil.Sort { A\AT0th  
Kesy2mE  
private static int MAX_STACK_SIZE=4096; s+Q;pRZW{  
private static int THRESHOLD=10; " xR[mJ@U  
/* (non-Javadoc) 1ibnx2^YB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R^n@.^8s  
*/ {v` 2sB  
public void sort(int[] data) { bk<FL6z z  
int[] stack=new int[MAX_STACK_SIZE]; KrcgIB8X  
A6{b?aQ  
int top=-1; B=X,7  
int pivot; V&ot3- Rf  
int pivotIndex,l,r; C$9z  
fD4ICO@  
stack[++top]=0; 0Fw6Dq<8-!  
stack[++top]=data.length-1; `f9gC3Hk  
&aG*k*  
while(top>0){ BqH]-'1G  
int j=stack[top--];  c</1  
int i=stack[top--]; qAY%nA>jO  
/nZ;v4  
pivotIndex=(i+j)/2; vq!uD!lr  
pivot=data[pivotIndex]; 7dOyxr"H-  
zt=0o| k  
SortUtil.swap(data,pivotIndex,j); %Dig)<yx  
<>Y?v C  
file://partition &dR=?bz-A  
l=i-1; iv&v8;B  
r=j; Q_p[k KH  
do{ ?_g1*@pA  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); hhI)' $  
SortUtil.swap(data,l,r); jrMe G.e=D  
} :+rUBYWx  
while(l SortUtil.swap(data,l,r); O+~ 7l?o  
SortUtil.swap(data,l,j); 'ZP)cI:+X  
YB,t0%vTJw  
if((l-i)>THRESHOLD){ Sw[{JB;y,  
stack[++top]=i; ,Hn^z<f   
stack[++top]=l-1; p'94SXO_  
} RA O`i>@  
if((j-l)>THRESHOLD){ &miexSNeF  
stack[++top]=l+1; +iO/m  
stack[++top]=j; en*d/>OVJ  
} o0It82?RN  
mXzrEI  
} %Ym^{N  
file://new InsertSort().sort(data); '%saL>0  
insertSort(data); x@>&IBiL  
} z=7|{G  
/** fJAnKUF)  
* @param data \qh *E#j  
*/ ^aZAw%K  
private void insertSort(int[] data) { >~nF=   
int temp; 58tVx'1y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t*XN_=E$f  
} FFKGd/:!  
} \ I`p|&vG  
} 3)=c]@N0  
u3 0s_\  
} 28.~iw  
tBATZ0nK`Q  
归并排序: Gi2$B76<  
zDTv\3rZ4X  
package org.rut.util.algorithm.support; xdvh-%A4  
&>g'$a<[  
import org.rut.util.algorithm.SortUtil; 0k,-;j,  
790-)\:CY  
/** r|Z5Xc  
* @author treeroot O$u"/cwe*  
* @since 2006-2-2 O1&b]C#  
* @version 1.0 ^wb:C[r!V  
*/ >Z.\J2wM<j  
public class MergeSort implements SortUtil.Sort{ 6uPcXd:8ZR  
KhbYr$  
/* (non-Javadoc) q.YfC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~]C%/gEh  
*/ x#.C4O09  
public void sort(int[] data) { V5F%_,No  
int[] temp=new int[data.length]; UBv@+\Y8m  
mergeSort(data,temp,0,data.length-1); v *-0M  
} vmTs9"ujF,  
PQN@JaD  
private void mergeSort(int[] data,int[] temp,int l,int r){ +HT1ct+dI  
int mid=(l+r)/2; -_ C#wtC  
if(l==r) return ; G q<X4C#|  
mergeSort(data,temp,l,mid); D]G)j  
mergeSort(data,temp,mid+1,r); ao_4mSB  
for(int i=l;i<=r;i++){ jnB~sbyA  
temp=data; EZ;"'4;W  
} :#k &\f-Y  
int i1=l; ]i<[d ,  
int i2=mid+1; 5{e,L>H<  
for(int cur=l;cur<=r;cur++){ j^tW Iz  
if(i1==mid+1) 39wa|:I  
data[cur]=temp[i2++]; Vwk#qgnX  
else if(i2>r) %UUH"  
data[cur]=temp[i1++]; 9^FziM  
else if(temp[i1] data[cur]=temp[i1++]; 5irwz4.4  
else FGWN}&K  
data[cur]=temp[i2++]; (Rt7%{*  
} bHLT}x/Gw  
} G;NF5`*4mc  
dovZ#D@Q  
} ]?O2:X  
@Jm7^;9/  
改进后的归并排序: )a@k]#)Skm  
5tjP6Z`!9`  
package org.rut.util.algorithm.support; W&(k!6<x  
!-`Cp3gqHr  
import org.rut.util.algorithm.SortUtil; *]hBGr#6  
goat<\a  
/** m7EcnQf  
* @author treeroot E%oY7.~-  
* @since 2006-2-2  j~j jX  
* @version 1.0 -=s(l.?Hm5  
*/ O,aS`u &  
public class ImprovedMergeSort implements SortUtil.Sort { 2{-ZD ,(u7  
I&n  
private static final int THRESHOLD = 10; X@@8"@/u|*  
yRp"jcD  
/* 98=wnWX 6$  
* (non-Javadoc) jls-@Wl  
* (Yo>Oh4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RrU BpqA  
*/ .#02 ngh  
public void sort(int[] data) { ['8!qr  
int[] temp=new int[data.length]; _@S`5;4x  
mergeSort(data,temp,0,data.length-1);  |@NiW\O  
} ljl^ GFo  
.ERO|$fv  
private void mergeSort(int[] data, int[] temp, int l, int r) { I>L-1o|^  
int i, j, k; 4DZ-bt'  
int mid = (l + r) / 2; zO g7raIa  
if (l == r) Y0?5w0{  
return; ()&~@1U  
if ((mid - l) >= THRESHOLD) ^B8b%'\  
mergeSort(data, temp, l, mid); CLvX!O(~  
else gbVdOm  
insertSort(data, l, mid - l + 1); U9b?i$  
if ((r - mid) > THRESHOLD) (/35p g6\  
mergeSort(data, temp, mid + 1, r); @gY)8xMbA  
else  V#VN %{  
insertSort(data, mid + 1, r - mid); 7{&|;U  
&0f5:M{P  
for (i = l; i <= mid; i++) { %v20~xW :o  
temp = data; 8@so"d2e  
} y;/VB,4V  
for (j = 1; j <= r - mid; j++) { Zd"^</ S  
temp[r - j + 1] = data[j + mid];  : ]C~gc  
} N('&jHF  
int a = temp[l]; n:MdYA5,m  
int b = temp[r]; 6@DF  
for (i = l, j = r, k = l; k <= r; k++) { /Q,mJ.CnSR  
if (a < b) { J:V?EE,\-  
data[k] = temp[i++]; jy-{~xdg[  
a = temp; >/|q:b^2r  
} else { /SYw;<=  
data[k] = temp[j--]; @)J+,tg/7  
b = temp[j]; M4as  
} ;!(<s,c#:  
} 9 (QJT}qC  
} j?'GZ d"B  
.Wjs~0c  
/** H;RwO@v  
* @param data "AE5 V'  
* @param l Omd .9  
* @param i ]+X@ 7  
*/ t.mVO]dsj  
private void insertSort(int[] data, int start, int len) { -GxaV #{  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); B}^w_C2  
} Hh+ 2mkg  
} eM8}X[  
} c/sC&i;%O  
} dAuJXGo  
p5G?N(l  
堆排序: S]+ :{9d  
K6R.@BMN  
package org.rut.util.algorithm.support; gEjdN.  
d3xmtG {i  
import org.rut.util.algorithm.SortUtil; =?!wXOg_  
;+"+3  
/** \ Yx/(e  
* @author treeroot %7|9sQ:  
* @since 2006-2-2 `nu''B H  
* @version 1.0 FJMrs[  
*/ \-g)T}g,I  
public class HeapSort implements SortUtil.Sort{ .mR8q+I6  
<7~'; K  
/* (non-Javadoc) q<M2,YrbAI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jyCXJa-!-  
*/ q@{Bt{$x  
public void sort(int[] data) { GWfL  
MaxHeap h=new MaxHeap(); $&=S#_HQS  
h.init(data); c Vc-  
for(int i=0;i h.remove(); r]6C  
System.arraycopy(h.queue,1,data,0,data.length); |:gf lseE  
} OGl}-kw  
W)bLSL]`E  
private static class MaxHeap{ ueUuJxq)  
7j-4TY~  
void init(int[] data){ {tWf  
this.queue=new int[data.length+1]; ^~etm  
for(int i=0;i queue[++size]=data; ')cMiX\v  
fixUp(size); > ;*b|Ik  
} y+NN< EY@  
} `x*Pof!Io  
[TmIVQ!B  
private int size=0; c24dSNJg,  
U>Slc08N  
private int[] queue; Qnsi`1mASr  
iUN Ib  
public int get() { VXwU?_4J.  
return queue[1]; #"G]ke1l$  
} ,0!}7;j_c  
{N+$Q'  
public void remove() { GB=X5<;  
SortUtil.swap(queue,1,size--); #AJM6* G9  
fixDown(1); $| @ (  
} gDpVeBd[  
file://fixdown 1ukTA@Rj&  
private void fixDown(int k) { EFM5,gB.m  
int j; YpVD2.jy  
while ((j = k << 1) <= size) { T{-CkHf9Q  
if (j < size %26amp;%26amp; queue[j] j++; ~UP[A'9jJ  
if (queue[k]>queue[j]) file://不用交换 yd d7I&$  
break; \XZ/v*d0  
SortUtil.swap(queue,j,k); ds<2I,t  
k = j; ``hf=`We  
} ~x1$h#Cx'  
} !2f[}.6+  
private void fixUp(int k) { asppRL||  
while (k > 1) { 8.O8No:'&  
int j = k >> 1; I=`U7Bis"  
if (queue[j]>queue[k]) V@g'#= {r  
break; )6Fok3u  
SortUtil.swap(queue,j,k); uxr #QA  
k = j; p$] 3'jw  
} o6.^*%kM'  
} :74y!  
u0 `S5?  
} T4Pgbop  
W')Yg5T  
} VY7[)  
_l8 9  
SortUtil: \!.B+7t=I  
UM"- nZ>[  
package org.rut.util.algorithm; L0TFo_  
+nFu|qM}  
import org.rut.util.algorithm.support.BubbleSort; +~ P2C6@G  
import org.rut.util.algorithm.support.HeapSort; vdc\R?  
import org.rut.util.algorithm.support.ImprovedMergeSort; gCB |DY  
import org.rut.util.algorithm.support.ImprovedQuickSort; x??+~$}\*-  
import org.rut.util.algorithm.support.InsertSort; |ATvS2  
import org.rut.util.algorithm.support.MergeSort; -cAo@}v  
import org.rut.util.algorithm.support.QuickSort; _@ qjV~%Sy  
import org.rut.util.algorithm.support.SelectionSort; 286jI7T  
import org.rut.util.algorithm.support.ShellSort; pmyXLT  
2K/4Rf0;  
/** L [pBB  
* @author treeroot 4V)kx[j  
* @since 2006-2-2 TNe l/   
* @version 1.0 KJ)k =mJ  
*/ 8V`WO6*  
public class SortUtil { EE06h-ns  
public final static int INSERT = 1; &5B'nk"  
public final static int BUBBLE = 2; vXrx{5gz  
public final static int SELECTION = 3; (c=6yV@  
public final static int SHELL = 4; 8Fz#A.%P  
public final static int QUICK = 5; z]_wjYn Z  
public final static int IMPROVED_QUICK = 6; 3M[! N  
public final static int MERGE = 7; ZbW17@b  
public final static int IMPROVED_MERGE = 8; Y!w`YYKP  
public final static int HEAP = 9; wd8 l$*F*  
*&^Pj%DX  
public static void sort(int[] data) { /NI;P]s.  
sort(data, IMPROVED_QUICK); y.mda:$~=  
} Z&+ g;(g  
private static String[] name={ ctZ uA+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" FrGgga$  
}; m$>H u@Va  
FXG]LoP  
private static Sort[] impl=new Sort[]{ "c%0P"u  
new InsertSort(), FrfM3x6UM  
new BubbleSort(), gwuI-d^  
new SelectionSort(), d;Ym=YHJtn  
new ShellSort(), 823Y\x~>  
new QuickSort(), Q4#m\KK;i9  
new ImprovedQuickSort(), _{YWXRC#  
new MergeSort(), /K@XzwM  
new ImprovedMergeSort(), M=@:ZQ^!  
new HeapSort() &N^9JxN?8  
}; aFX=C >M  
UNu#(nP  
public static String toString(int algorithm){  dVtG/0  
return name[algorithm-1]; pZ.ecZe/  
} NvceYKp:  
JE "x  
public static void sort(int[] data, int algorithm) { e5ZX   
impl[algorithm-1].sort(data); 24 'J  
} [.7d<oY  
xX&+WR  
public static interface Sort { %HhnSi1K  
public void sort(int[] data); [Gb. JO}X  
} \h/H#j ZJ  
]vUwG--*  
public static void swap(int[] data, int i, int j) { y@S$^jk.  
int temp = data; 3)<yod=  
data = data[j]; A4x]Qh3OO  
data[j] = temp; t%0VJB,Q2  
} yW=::=  
} y&$A+peJ1  
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