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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。 6Kg lp\2  
插入排序: #;>J<>  
&QLCij5:  
package org.rut.util.algorithm.support; %0. o(U  
Hz!+g'R!Gs  
import org.rut.util.algorithm.SortUtil; 8qo{%  
/** /6b(w=pk  
* @author treeroot JYs*1<  
* @since 2006-2-2 if r!ha+8!  
* @version 1.0 Nmns3D  
*/ R7( + ^%  
public class InsertSort implements SortUtil.Sort{ J3g>#N]='(  
qFt%{~a S  
/* (non-Javadoc) v~uQ_ae$>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =^O8 4Cp 6  
*/ 3]M YH b  
public void sort(int[] data) { Hk(w\   
int temp; H>a3\M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); VTy!<I  
} 3Ud&B  
} pu,/GBG_  
} uXyNj2(d.  
G{$9e}#  
} t&eY+3y,T  
4f'WF5S/}8  
冒泡排序:  \^w=T*  
+7^{T:^ht  
package org.rut.util.algorithm.support; }|&M@Up  
Y?R;Y:u3Z  
import org.rut.util.algorithm.SortUtil; i=]IUjx<  
CSR 6  
/** /%=p-By<V  
* @author treeroot ,`B*rCOa  
* @since 2006-2-2 ')}$v+9h  
* @version 1.0 &(IL`%  
*/ |C\g3N-  
public class BubbleSort implements SortUtil.Sort{ JP S L-j  
45W:b/n\  
/* (non-Javadoc) 7f~DD8R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (;+ JM*c2N  
*/ [p_R?2uT  
public void sort(int[] data) { +TfMj1Zx  
int temp; UdT ~ h  
for(int i=0;i for(int j=data.length-1;j>i;j--){ lKxv SyD  
if(data[j] SortUtil.swap(data,j,j-1); hnmFhJ !g  
} u ,*$n'l]  
} \/. Of]YQ  
} Lb{~a_c  
} m{I_E G  
`9kjYSd#E  
} "u3  
>/ECLP  
选择排序: =3}@\f#  
{y)s85:t  
package org.rut.util.algorithm.support; Bm;{dO  
:DR G=-M  
import org.rut.util.algorithm.SortUtil; rX{QgyY&  
WB"$NYB  
/** )p).}"   
* @author treeroot sbQmPV  
* @since 2006-2-2 b'St14_  
* @version 1.0 ;_%61ZI?M<  
*/ /px*v<Aw1  
public class SelectionSort implements SortUtil.Sort { Yono8M;9*  
7Z93`A-=  
/* ^kch]?  
* (non-Javadoc) [yf2_{*0T  
* 0@.$(Aqo(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ph<Z/wlz  
*/ v'2EYTVNJD  
public void sort(int[] data) { \V+$2 :A  
int temp; AFc#2wn  
for (int i = 0; i < data.length; i++) { cs8bRXjHa  
int lowIndex = i; L/c$p`-  
for (int j = data.length - 1; j > i; j--) { }$Q+x'  
if (data[j] < data[lowIndex]) { :R"k=l1  
lowIndex = j; x EOR\(Z^  
} 6Bo~7gnc  
} e*jn7aya  
SortUtil.swap(data,i,lowIndex); ]9]3=;b>  
} ghx8dX}  
} LGgEq -  
|&o1i~Y  
} T=A7f6`  
LrsP4G  
Shell排序: 1x V~EX  
`Z{; c  
package org.rut.util.algorithm.support; EN+WEMro  
;#G>qo  
import org.rut.util.algorithm.SortUtil; o`DBzC  
u> %r(  
/** VX[{X8PkS  
* @author treeroot ? Ls]k  
* @since 2006-2-2 ~bWqoJ;Q  
* @version 1.0 ;KbnaUAS8  
*/ OV;Ho  
public class ShellSort implements SortUtil.Sort{ GLv}|>W  
tV[?WA[xt  
/* (non-Javadoc) [f:>tRdH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qF%wl  
*/ &bRmr/D  
public void sort(int[] data) { +`yDWN?7  
for(int i=data.length/2;i>2;i/=2){ TXH: +mc  
for(int j=0;j insertSort(data,j,i); #OJsu  
} SdYES5aES  
} b,#cc>76\  
insertSort(data,0,1); Vj:)w<] ,  
} 7Aq4YjbX  
#D .H2'_}  
/** <T+Pw7X   
* @param data Yc"G="XP;  
* @param j __-rP  
* @param i qV@xEgW#r  
*/ F'C]OMBE  
private void insertSort(int[] data, int start, int inc) { Yu9Ccj`  
int temp; g5M-Vu  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |2 g }i\  
} Ipb 4{A&"\  
} U :J~O y_Z  
} 7 G~MqnO|  
!:c7I@  
} ' f}^/`J  
yV$p(+KkS  
快速排序: < ;Qle  
n?YGX W/  
package org.rut.util.algorithm.support; Ud*.[GRD~  
c42p>}P[  
import org.rut.util.algorithm.SortUtil; $_S^Aw?  
4Q z  
/** bO9F rEz5  
* @author treeroot R 7xV{o  
* @since 2006-2-2 f]J?-ks  
* @version 1.0 5u~Ik c~  
*/ kFw3'OZ,  
public class QuickSort implements SortUtil.Sort{ P+%O]v1 Ob  
9cQKXh:R.  
/* (non-Javadoc) <Zl0$~B:5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oQjh?vm  
*/ v)%EG  
public void sort(int[] data) { RVXRF_I  
quickSort(data,0,data.length-1); s,]6Lri`\  
} nC_<pq^tr  
private void quickSort(int[] data,int i,int j){  vF]?i  
int pivotIndex=(i+j)/2; ! r.X.C  
file://swap cd) <t8^KE  
SortUtil.swap(data,pivotIndex,j); K%2,z3ps  
FOquQr1cF  
int k=partition(data,i-1,j,data[j]); f2uog$H k  
SortUtil.swap(data,k,j); v9x $`  
if((k-i)>1) quickSort(data,i,k-1); 4AZlr*U  
if((j-k)>1) quickSort(data,k+1,j); u17Da9@;  
_@F4s   
} <*8nv.PX*  
/** QbV)+7II=  
* @param data l.;y`cs  
* @param i ?9Fv0-g&n  
* @param j 9P{5bG0o8  
* @return K)_0ej~C  
*/ FT[wa-b  
private int partition(int[] data, int l, int r,int pivot) { U5dJ=G  
do{ y!blp>V6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N95"dNZE  
SortUtil.swap(data,l,r); U87VaUr  
} [0m'a\YE9  
while(l SortUtil.swap(data,l,r); o:f=dBmoX  
return l; h'MX{Wm.  
} }1:jM_H)k  
feQ_dA q  
} o! sxfJKl  
k3sP,opacX  
改进后的快速排序: $Z.c9rY1  
unSF;S<  
package org.rut.util.algorithm.support; Q\m"n^XN  
xDRK^nmC  
import org.rut.util.algorithm.SortUtil; >J.a, !  
wW6?.}2zU  
/** Y0&w;P  
* @author treeroot ^%IKlj- E  
* @since 2006-2-2 X H{5E4P  
* @version 1.0 ,y:q]PR  
*/ }b)?o@9}:  
public class ImprovedQuickSort implements SortUtil.Sort { vQc>jmS+n  
]9R?2{"K  
private static int MAX_STACK_SIZE=4096; K~x G+Kh  
private static int THRESHOLD=10; YRW<n9=3  
/* (non-Javadoc) jM2gu~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oJ{)0;<~L  
*/ Z TjlGU `  
public void sort(int[] data) { f>#\'+l'  
int[] stack=new int[MAX_STACK_SIZE]; A5ktbj&gy<  
gA" =so  
int top=-1; UrN$nhH  
int pivot; >Q[]i4*A  
int pivotIndex,l,r; _L%/NXu,  
7:jSP$  
stack[++top]=0; %do|>7MO@  
stack[++top]=data.length-1; YjvqU /[3  
57K1e~^  
while(top>0){ CSt6}_c!  
int j=stack[top--]; 1V FAfv%}  
int i=stack[top--]; |PI.xl:ch  
+:/`&LOS-  
pivotIndex=(i+j)/2; %+o]1R  
pivot=data[pivotIndex]; ~qFi0<-M  
pC_2_,6$  
SortUtil.swap(data,pivotIndex,j); 5C#&vYnq  
]2h~Db=  
file://partition H# 2'\0u  
l=i-1; :L*CL 8m  
r=j; l]oGhM;  
do{ <0JW[m  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <9\_b 6  
SortUtil.swap(data,l,r); zh*NRN  
} hh:0m\@<  
while(l SortUtil.swap(data,l,r); JOenVepQ,  
SortUtil.swap(data,l,j); J5@_OIc1y  
\DeZY97p%  
if((l-i)>THRESHOLD){ tnRq?  
stack[++top]=i; T(J&v|FK  
stack[++top]=l-1; gbXzD`WQ  
} BCsW03sQ  
if((j-l)>THRESHOLD){ #V4_.t#  
stack[++top]=l+1; &&_W,id`  
stack[++top]=j; @@SG0YxZ  
} A' dt WD  
WdunI~&.  
} _wZ(%(^I  
file://new InsertSort().sort(data); /x0zZ+}V  
insertSort(data); +SUQRDF@i  
} Yw?%>L  
/** JfKl=vg  
* @param data 0sV;TQt+f  
*/ rb`C:#j{J  
private void insertSort(int[] data) { e-UPu%'  
int temp; `4\H'p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]#3=GFs/  
} oE-i`;\8  
} 9FcCq*D  
} ,lL0'$k~  
%S$P+B?  
} Nl;rg*@o  
A4%0  
归并排序: %ze Sx  
%z.u % %  
package org.rut.util.algorithm.support; JGGss5  
O?8G  
import org.rut.util.algorithm.SortUtil; xV<NeU  
47ir QK*  
/** eR8h4M~O  
* @author treeroot k\HRG@ /G  
* @since 2006-2-2 )7c^@I;7  
* @version 1.0 6M612   
*/ ?w3f;v  
public class MergeSort implements SortUtil.Sort{ z'fGHiX7.0  
XK(<N<Z@|e  
/* (non-Javadoc) olK%TM[Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .hETqE`E  
*/ 3<'SnP3mY  
public void sort(int[] data) { KY2xKco  
int[] temp=new int[data.length]; !{Y$5)Xh`]  
mergeSort(data,temp,0,data.length-1); |_!xA/_U'T  
}  "}Ya.  
h r*KDT^!  
private void mergeSort(int[] data,int[] temp,int l,int r){ e:NzpzI"v  
int mid=(l+r)/2; ~3/>;[!  
if(l==r) return ; 0($MN]oZa  
mergeSort(data,temp,l,mid); lFI"U^xC  
mergeSort(data,temp,mid+1,r); .i[Tp6'%,  
for(int i=l;i<=r;i++){ o6B!ikz 8  
temp=data; QsI$4:yl  
} +de.!oY  
int i1=l; LLaoND6  
int i2=mid+1; ,+zLFQC0@  
for(int cur=l;cur<=r;cur++){ ZFz>" vt@  
if(i1==mid+1) ~w4aA<2Uq  
data[cur]=temp[i2++]; 9at7$Nq  
else if(i2>r) . +.Y`0  
data[cur]=temp[i1++]; N:"E%:wSbi  
else if(temp[i1] data[cur]=temp[i1++]; Yx XDRb\kW  
else 78}iNGf  
data[cur]=temp[i2++]; 7<-D_$SrU  
} 3smcCQA%  
} RFQa9Rxk  
HZfcLDrO  
} >q[Elz=dI  
P%%Cd  
改进后的归并排序: u8-)LOf(  
nCXIWLw  
package org.rut.util.algorithm.support; o?/N4$&5l  
|l7e*$j  
import org.rut.util.algorithm.SortUtil; )h>Cp,|{  
!7^fji  
/** i"sVk8+o!  
* @author treeroot C.pNDpx-  
* @since 2006-2-2 <J?i+b  
* @version 1.0 G8akMd]2  
*/ $\m=-5 0-  
public class ImprovedMergeSort implements SortUtil.Sort { Ha4?I$'$  
Hdj0! bUx  
private static final int THRESHOLD = 10; Hsx`P  
Z*s/%4On  
/* 1T!_d&A1o  
* (non-Javadoc) D[;6xJ  
* n'%*vdHK m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o(|`atvK  
*/ /$I&D}uR`  
public void sort(int[] data) { _%Mu{Ni&  
int[] temp=new int[data.length]; %)\Cwl   
mergeSort(data,temp,0,data.length-1); }Ct_i'Ow  
} p5G O@^i  
*A c~   
private void mergeSort(int[] data, int[] temp, int l, int r) { nSgg'I(  
int i, j, k; *!l q1h  
int mid = (l + r) / 2; r`28fC  
if (l == r) a] >|2JN<&  
return; >N+e c_D^  
if ((mid - l) >= THRESHOLD) Y5PIR9-  
mergeSort(data, temp, l, mid); zS|%+er~zO  
else ]<W1edr  
insertSort(data, l, mid - l + 1); * C's7O{O  
if ((r - mid) > THRESHOLD) LFV;Y.-(h  
mergeSort(data, temp, mid + 1, r); w#XE!8`  
else H\^5>ccU>V  
insertSort(data, mid + 1, r - mid); C=%go1! $  
8m-jU 5u  
for (i = l; i <= mid; i++) { tlqDY1  
temp = data; od?Q&'A  
} AvP*p{we  
for (j = 1; j <= r - mid; j++) { 6t/})Xv  
temp[r - j + 1] = data[j + mid]; E(]yjZ/  
} IO]Oo3  
int a = temp[l]; ckN/_ u3  
int b = temp[r]; LF*3Iw|v  
for (i = l, j = r, k = l; k <= r; k++) { BniFEW:<  
if (a < b) { <m UDx n  
data[k] = temp[i++]; YN"102CK  
a = temp; 2/?pI/W  
} else { -aKL 78  
data[k] = temp[j--]; G}D?+MWY  
b = temp[j]; vAwFPqu  
} hiU_r="*ox  
} Ldt7?Y(V(  
} J6NQ5S\  
 /=[M  
/** )bw>)&)b`  
* @param data Fk=_Q LI  
* @param l e0>@Yp[Kd  
* @param i Me5umA  
*/ AVNB)K"  
private void insertSort(int[] data, int start, int len) { 2MB\!fh  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8q_3*++D  
} owYfrf3ZLX  
} >Z<ym|(T*  
} ,ulNap"R  
} &WvJg#f  
'#u2q=n4*  
堆排序: bis/Nfr]  
iWQBo>x  
package org.rut.util.algorithm.support; E3NYUHfZ  
K<Ct  
import org.rut.util.algorithm.SortUtil; [h8F)  
vlzjALy  
/** _2f}WY3S  
* @author treeroot 8a. |CgI#h  
* @since 2006-2-2 T7cT4PAW  
* @version 1.0 \mWXr*;  
*/ S)JZ b_  
public class HeapSort implements SortUtil.Sort{ j cx/ZR  
>`,v?<>+  
/* (non-Javadoc) t#Yyo$9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iVXR=A\er  
*/ WMh'<'w N_  
public void sort(int[] data) { 0Xk;X1Xl  
MaxHeap h=new MaxHeap(); >+,1@R  
h.init(data); R&PQ[Xc  
for(int i=0;i h.remove(); a7#Eyw^H{  
System.arraycopy(h.queue,1,data,0,data.length); Hvor{o5|tB  
} \ov>?5  
_eO+O=j_x  
private static class MaxHeap{ |a\s}M1  
/:awPYGH<1  
void init(int[] data){ #c/v2  
this.queue=new int[data.length+1]; \4zvknk<  
for(int i=0;i queue[++size]=data; r]0o  
fixUp(size); *xL#1  
} r \=p.cw<  
} y7,~7f!N2  
o L6[i'H|  
private int size=0; u$<FKp;I  
@@ ZcW<Y"  
private int[] queue; :MJBbrV ,  
/ HaS.  
public int get() { :p8JO:g9  
return queue[1]; hh:)"<[  
} WxO*{`T!  
 ] mP-HFl  
public void remove() { Q&M(wnl5  
SortUtil.swap(queue,1,size--); 1Rp|*>  
fixDown(1); 6LvUi|~"<  
} y=  
file://fixdown `4;<\VYCr  
private void fixDown(int k) { jX+LI  
int j; BLMcvK\9  
while ((j = k << 1) <= size) { BKvF,f/g  
if (j < size %26amp;%26amp; queue[j] j++; wJ IJPYTK  
if (queue[k]>queue[j]) file://不用交换 ~xvQ?c ?-  
break; %R&3v%$y*  
SortUtil.swap(queue,j,k); ZMx_J  
k = j; ?{{E/J:%  
} .iew5.eB+  
} gfr``z=>O  
private void fixUp(int k) { 7zQD.+&L  
while (k > 1) { HJg)c;u/2;  
int j = k >> 1; Z$WT ~V  
if (queue[j]>queue[k]) k"Sw,"e>+  
break; #"7:NR^H^  
SortUtil.swap(queue,j,k); C: e}}8i  
k = j; xn}'!S2-b  
} CB?.| )Xam  
} BA t2m-  
VT'$lB%IK  
} D4o?  
K=06I  
} Y6{p|F?&"  
jh8%Xu]t  
SortUtil: Eda sGCo  
Saz+GQ G  
package org.rut.util.algorithm; % qAhE TZ%  
_f34p:B%s  
import org.rut.util.algorithm.support.BubbleSort; !+fHdB  
import org.rut.util.algorithm.support.HeapSort; eh)J'G]G  
import org.rut.util.algorithm.support.ImprovedMergeSort; <w2Nh eM 3  
import org.rut.util.algorithm.support.ImprovedQuickSort; |<BTK_R  
import org.rut.util.algorithm.support.InsertSort; U*a!Gn7l  
import org.rut.util.algorithm.support.MergeSort; ={feN L  
import org.rut.util.algorithm.support.QuickSort; k5}i^^.  
import org.rut.util.algorithm.support.SelectionSort; dc lJ  
import org.rut.util.algorithm.support.ShellSort; #+_Oy Z*  
vZ|-VvG  
/** I;mtyS  
* @author treeroot 4] DmgOru%  
* @since 2006-2-2 Y{p *$  
* @version 1.0 AA05wpu8  
*/ \uanQ|Nu  
public class SortUtil { F7"Ihb^l  
public final static int INSERT = 1; :;??!V  
public final static int BUBBLE = 2; >Zmpsa+  
public final static int SELECTION = 3; fDbs3"H Q  
public final static int SHELL = 4; m+uh6IqN./  
public final static int QUICK = 5; F ^E(AE  
public final static int IMPROVED_QUICK = 6; u)Y#&qA  
public final static int MERGE = 7; 9`09.`U9[  
public final static int IMPROVED_MERGE = 8; \t!+]v8f8  
public final static int HEAP = 9; 3:=XU9p)x  
?58pkg J  
public static void sort(int[] data) { CQtd%'rt6  
sort(data, IMPROVED_QUICK); 9sT?"(=  
} Wa[~)A  
private static String[] name={ SXod r}  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" A #jiCIc  
}; $ B$=,^)3  
XU SfOf(  
private static Sort[] impl=new Sort[]{ *><] [|Y@H  
new InsertSort(), PK+][.6H  
new BubbleSort(), 9:=a FP  
new SelectionSort(), y>~Ke UC  
new ShellSort(), /6S/a*`<X  
new QuickSort(), n+!.0d}6  
new ImprovedQuickSort(), Box,N5AA  
new MergeSort(), CZ&TUE|:DA  
new ImprovedMergeSort(), XriVHb  
new HeapSort() cAktSoF  
}; z1V0WDVm  
/pyKTZ|  
public static String toString(int algorithm){ FAQ:0 L$G  
return name[algorithm-1]; crhck'?0  
} Zn9w1ev  
I1}{7-_t  
public static void sort(int[] data, int algorithm) { %@BQv 4oJ  
impl[algorithm-1].sort(data); ]AHi$Xx  
} Tzk8y 7$[  
X2Lhb{ZHE  
public static interface Sort { M#|TQa N  
public void sort(int[] data); @pG\5Jnf  
} \8t g7Sdq  
Z;n}*^U  
public static void swap(int[] data, int i, int j) { O-&n5  
int temp = data; pP".?|n  
data = data[j]; `*N0 Lbl]  
data[j] = temp; m,.d< **  
} '2.F-~  
} @Qx;J<{+g  
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