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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。 P:vp/x!  
插入排序: bolG3Tf|  
/J/V1dC}]D  
package org.rut.util.algorithm.support; U.I w/T-5  
vyJ8" #]qY  
import org.rut.util.algorithm.SortUtil; \O;/wf0Hg  
/** : #?_4D!r  
* @author treeroot |&W4Dk n  
* @since 2006-2-2 _#&oQFdYR  
* @version 1.0 c(2?./\|  
*/ 'bSWJ/;p)  
public class InsertSort implements SortUtil.Sort{ %,HUn`  
j3`YaWw  
/* (non-Javadoc) hi/d%lNZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MMpId Uhr  
*/ ' 7oCWHq[  
public void sort(int[] data) { FJCORa@?_  
int temp; rTVv6:L  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U!uJ)mm  
} &p_iAMn:9  
} n^l*oEl  
} )`'a1y|  
8M,@Mb n  
} )R'%SLw  
QKts-b[3  
冒泡排序: 4u%AZ<-C}m  
+75"Q:I  
package org.rut.util.algorithm.support; .[1 f$  
D&ua A-;s  
import org.rut.util.algorithm.SortUtil; &S 66M2  
aQ\SV0PI  
/** +>*=~R  
* @author treeroot oQm XKV+[v  
* @since 2006-2-2 r nr-wUW@  
* @version 1.0 mTWd+mx  
*/ )8#-IXxp  
public class BubbleSort implements SortUtil.Sort{ S(xs;tZ  
'Rsr*gX#  
/* (non-Javadoc) _D?/$D7u#%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fjy\Q  
*/ ]u$tKC  
public void sort(int[] data) { W'"?5} (  
int temp; )uo".n|n~B  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3%GsTq2o  
if(data[j] SortUtil.swap(data,j,j-1); $|J+  
} 7 L ,`7k|  
} 7#G!es  
} Et(H6O 8  
} j n SZ@u  
U YJ>L  
} +}?%w|8||s  
Al8Dw)uG{  
选择排序: $ ~%Y}Xt*  
F {L#  
package org.rut.util.algorithm.support; ocK4Nxs  
]S@T|08b  
import org.rut.util.algorithm.SortUtil; -=8f*K[W  
\ctzv``/n  
/** $!9/s S?  
* @author treeroot XXA'B{@Y)  
* @since 2006-2-2 aZ\Z7(  
* @version 1.0 ^w``(-[*  
*/ >#;;g2UV  
public class SelectionSort implements SortUtil.Sort {  WTl0}wi  
SSE,G!@  
/* a*D<J}xe  
* (non-Javadoc) U; <{P  
* uuF~+=.|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W% Lrp{  
*/ <bg6k .s  
public void sort(int[] data) { XP}5i!}}7=  
int temp; 2 YWO'PL  
for (int i = 0; i < data.length; i++) { qM26:kB{  
int lowIndex = i; Pp69|lxV=k  
for (int j = data.length - 1; j > i; j--) { .*oL@iX  
if (data[j] < data[lowIndex]) { 1D8S}=5&  
lowIndex = j; CPcUB4a%#  
} %@)q=*=y  
} ~'0n ]Fw  
SortUtil.swap(data,i,lowIndex); }b}jw.2Wu  
} \_R<Q?D+  
} aBY&]6^-  
k{F6WQ7  
} 0Qvr g+  
DO*6gzW  
Shell排序: ^ /%Y]d$  
Op~:z<z  
package org.rut.util.algorithm.support; 7]5~ml3:  
w%)RX<h dI  
import org.rut.util.algorithm.SortUtil; PyHL`PZZ  
V/"RCqY4  
/** ,Fkq/h  
* @author treeroot Z"w}`&TC$^  
* @since 2006-2-2 P(8 uL|^  
* @version 1.0 \vc&V8  
*/ Zj ` ;IYFG  
public class ShellSort implements SortUtil.Sort{ ^z, B}Nz  
aCQ[Uc<B:  
/* (non-Javadoc) b3%a4Gg&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lwf[*n d  
*/ '" &*7)+g*  
public void sort(int[] data) { "oZ_1qi<  
for(int i=data.length/2;i>2;i/=2){ <^{(?*  
for(int j=0;j insertSort(data,j,i); Nr,I`x\N  
} GtIAsC03  
} )y:))\>  
insertSort(data,0,1); R N@)nc_  
} bZfq?   
4,X CbcC  
/** ~.U \Y  
* @param data G@jx&#v  
* @param j 06.8m;{N  
* @param i MwSfuP  
*/ `VGw5o  
private void insertSort(int[] data, int start, int inc) { Th\T$T`X$  
int temp; '4u/g  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &X` lh P  
} tK*y/S  
} lcReRcjm  
} ]=xX_  
&vN!>bR  
} y ,`0f|  
.T(vGiU  
快速排序: -:45Q{u/  
B|9XqQ EI  
package org.rut.util.algorithm.support; xmC5uT6L3M  
N z=P1&G'  
import org.rut.util.algorithm.SortUtil; v<l]K$5J&  
AFYdBK]  
/** ]S9Z5l0  
* @author treeroot :-hVbS0I  
* @since 2006-2-2 UMD\n<+cG,  
* @version 1.0 x 00'wY|  
*/ wnXU=  
public class QuickSort implements SortUtil.Sort{ !m'Rp~t  
XA.1Y)  
/* (non-Javadoc) t&5Ne ?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?-`&YfF  
*/ OQ<;w  
public void sort(int[] data) { ze5#6Vzd&  
quickSort(data,0,data.length-1); 152s<lu1Z  
} &P35\q   
private void quickSort(int[] data,int i,int j){ yn(bW\  
int pivotIndex=(i+j)/2; /6y{ ?0S  
file://swap $1zWQJd[-  
SortUtil.swap(data,pivotIndex,j); !SGRK01  
x=x%F;  
int k=partition(data,i-1,j,data[j]); +s`cXTlFrk  
SortUtil.swap(data,k,j); KZAF9   
if((k-i)>1) quickSort(data,i,k-1); ta x:9j|~  
if((j-k)>1) quickSort(data,k+1,j); Lrr(7cH,  
eIlovq/X  
} LZs'hA<L  
/** oGg<s3;UND  
* @param data ]E DC s?,  
* @param i L 9cXgd  
* @param j mC0Dj O  
* @return i=P}i8,^ =  
*/ THK^u+~LM  
private int partition(int[] data, int l, int r,int pivot) { w&VDe(:~  
do{ TPKD'@:x  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (./Iq#@S  
SortUtil.swap(data,l,r); 8+Gwv SDU  
} >T0`( #Lm  
while(l SortUtil.swap(data,l,r); r5(efTgAd+  
return l; s+&0Z3+  
} sP% b? 6  
TA:#K  
} -3b_}by  
j:2 F97  
改进后的快速排序: eHd7fhW5  
-GB,g=Dk  
package org.rut.util.algorithm.support; i;|I; 5tC  
a gL@A  
import org.rut.util.algorithm.SortUtil; D eT$4c*:[  
Qr6PkHU  
/** e$`hRZ%  
* @author treeroot .XkVdaX  
* @since 2006-2-2 4mX?PKvbn  
* @version 1.0 I};*O6D`  
*/ QJjk#*?,|  
public class ImprovedQuickSort implements SortUtil.Sort { TK~KM  
@" umY-1f  
private static int MAX_STACK_SIZE=4096; ,69547#o  
private static int THRESHOLD=10; Q+QD ,  
/* (non-Javadoc) @*UV|$~(Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4)'U!jSb  
*/ itc\wn  
public void sort(int[] data) { 0XqxW\8_l  
int[] stack=new int[MAX_STACK_SIZE]; pNmWBp|ER  
Xi\c>eALO  
int top=-1; =WZ@{z9J  
int pivot; n:1Ijh 1  
int pivotIndex,l,r; e VQ-?DK  
}*qj,8-9  
stack[++top]=0; pDvznpQ  
stack[++top]=data.length-1; AA=eWg  
Y"m(hs $  
while(top>0){ 91q  
int j=stack[top--]; AUIp vd  
int i=stack[top--]; WNKP';(a@G  
NN5Ejr,  
pivotIndex=(i+j)/2; kh#fUAt  
pivot=data[pivotIndex]; fl2XI=[v4  
Y ZuA"l Y  
SortUtil.swap(data,pivotIndex,j); \W= qqE]  
fWi/mK3c  
file://partition V s=o@  
l=i-1; @A*>lUo  
r=j; QH,(iX6RY  
do{ o?a3hD  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "QiLu=Rq  
SortUtil.swap(data,l,r); [9NrPm3d  
} 0 ?gHRdU"  
while(l SortUtil.swap(data,l,r); L2~'Z'q  
SortUtil.swap(data,l,j); T"gk^.  
a1_o  
if((l-i)>THRESHOLD){ P$*Ngt  
stack[++top]=i; Sw5-^2x0'  
stack[++top]=l-1; /5j5\F:33  
} R*S:/s  
if((j-l)>THRESHOLD){ ;G3?Sa7+  
stack[++top]=l+1; s2 :Vm\  
stack[++top]=j; x.] tGS  
} &"hEKIqL  
x7G*xHJ  
} #V#!@@c;?  
file://new InsertSort().sort(data); wQ@:0GJH  
insertSort(data); uxh>r2Xr=  
} Eciu^  
/** V@ O)7ND  
* @param data M:iH7K  
*/ e6jA4X+a  
private void insertSort(int[] data) { !H9^j6|  
int temp; WLfDXx 2A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ae]6F_Qtc*  
} d~{$,"!-f  
} 1)z Xv  
} Q {BA`Q@V  
mo(>SnS<  
} v'S5F@ln  
BNI)y@E^X  
归并排序: `r~3Pf).4  
9 Qa_3+.B  
package org.rut.util.algorithm.support; ZrZDyXL  
K{"hf:k  
import org.rut.util.algorithm.SortUtil; NuD|%Ebs  
MxKTKBxQ  
/** ]yZ%wU9!  
* @author treeroot *)6\ V}`  
* @since 2006-2-2 ;^E_BJm  
* @version 1.0 pIYXYQ=Z  
*/ .uxM&|0H  
public class MergeSort implements SortUtil.Sort{ aJA(UN45  
R<{Vgy  
/* (non-Javadoc) ;z N1Qb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +{I" e,Nk  
*/ %%>nM'4<  
public void sort(int[] data) { =adHP|S  
int[] temp=new int[data.length]; P?P.QK  
mergeSort(data,temp,0,data.length-1); %b4tyX:N0  
} %d(= >  
iemp%~UZ  
private void mergeSort(int[] data,int[] temp,int l,int r){ $gD8[NAIx=  
int mid=(l+r)/2; z0SF2L H  
if(l==r) return ; |g!d[ct]  
mergeSort(data,temp,l,mid); N2duhI6  
mergeSort(data,temp,mid+1,r); V %D1Q}X  
for(int i=l;i<=r;i++){ 32%Fdz1S  
temp=data; *h3iAcM8  
} K5 BL4N  
int i1=l; #d-zH:uq  
int i2=mid+1; &vn2u bauS  
for(int cur=l;cur<=r;cur++){ +`g&hO\W  
if(i1==mid+1) '=#fELMW  
data[cur]=temp[i2++]; U"+W)rUd  
else if(i2>r) G :k'm^k  
data[cur]=temp[i1++]; UOl*wvy  
else if(temp[i1] data[cur]=temp[i1++]; n_9Ex&?e  
else 72yJv=G  
data[cur]=temp[i2++]; A~<!@`NjB  
} [(5.?  
} `&OX|mL^w  
} e+`Kxy  
} 0`-b57lF&  
5Pn.c!  
改进后的归并排序: %DXBl:!Y`  
A8Fe@$<#8  
package org.rut.util.algorithm.support; IM/xBP  
xdM'v{N#m  
import org.rut.util.algorithm.SortUtil; LbRQjwc]W  
u;c WIRG  
/** i$PO#}  
* @author treeroot =W:=}ODD  
* @since 2006-2-2 ?6`B;_m  
* @version 1.0 kROIVO1|`  
*/ cy;i1#1rO  
public class ImprovedMergeSort implements SortUtil.Sort { s8>y&b.  
CE c(2q+%i  
private static final int THRESHOLD = 10; ]77f`<q<}!  
[WG\w j.  
/* &0-oi Y  
* (non-Javadoc) JcmJq fR  
* Dm5 Uy^F}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wL="p) TO.  
*/ t&J A1|q  
public void sort(int[] data) { QDJ "X  
int[] temp=new int[data.length];  QSY>8P  
mergeSort(data,temp,0,data.length-1); $/ IFSB9  
} +,LWyvc'  
%N fpEo  
private void mergeSort(int[] data, int[] temp, int l, int r) { /:(A9b-B  
int i, j, k; .'<K$:8@|  
int mid = (l + r) / 2; H${LF.8  
if (l == r) *K;) ~@n  
return; :=ek~s.UV  
if ((mid - l) >= THRESHOLD) 51Y%"v t  
mergeSort(data, temp, l, mid); XC^*z[#4{  
else ;(Ug]U%3_  
insertSort(data, l, mid - l + 1); L8Tm8)  
if ((r - mid) > THRESHOLD) lMvOYv  
mergeSort(data, temp, mid + 1, r); PDuBf&/e  
else % _E?3  
insertSort(data, mid + 1, r - mid); ~o"=4q`>  
8{2  
for (i = l; i <= mid; i++) { o9"?z  
temp = data; U{M3QOF  
} *S:~U  
for (j = 1; j <= r - mid; j++) { 89(qU  
temp[r - j + 1] = data[j + mid]; pQ:^ ziwa3  
} 6` TwP\!$/  
int a = temp[l]; $$1t4=Pz  
int b = temp[r]; "}*D,[C5e  
for (i = l, j = r, k = l; k <= r; k++) { wb?k  
if (a < b) { 2WFZ6  
data[k] = temp[i++]; $a*7Q~4  
a = temp;  7N[".V]c  
} else { NOXP}M  
data[k] = temp[j--]; zH}3J}  
b = temp[j]; A%W]XEa<  
} U,EoCAm>  
} 2RX]~}  
} 3U{ mC}F  
-?)^ hbr  
/** 6Qt(Yu*s  
* @param data EOrui:.B)  
* @param l 06f%{mAZS  
* @param i aX;>XL4  
*/ N knS:r&2  
private void insertSort(int[] data, int start, int len) { B=a+cT  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ) bI.K[0^  
} )/;+aDk  
} 1~L;S  
} fOHbgnL>  
} &`l\Q\_[@  
B&6NjLV  
堆排序: g&xj(SMj-$  
@9HRGxJ=}  
package org.rut.util.algorithm.support; : "| /  
fc*>ky.v  
import org.rut.util.algorithm.SortUtil; h2Nt@  
jL\j$'KC  
/** 9,INyEyAL  
* @author treeroot B\RAX#  
* @since 2006-2-2 Zpkd8@g@  
* @version 1.0 iv~R4;;)  
*/ Nt@|l7Xl*  
public class HeapSort implements SortUtil.Sort{ Za{O9Qc?D|  
/f1]U LmC:  
/* (non-Javadoc) nD BWm`kN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t[`LG)  
*/ Gg'!(]v  
public void sort(int[] data) { ]i.N'O<p  
MaxHeap h=new MaxHeap(); QX<n^W  
h.init(data); A,<5W }  
for(int i=0;i h.remove(); {wz)^A sy  
System.arraycopy(h.queue,1,data,0,data.length); ,^?g\&f(  
} qhxMO[f  
@^UgdD,BS,  
private static class MaxHeap{ mcd{:/^?  
wG[n wt0L  
void init(int[] data){ f%o[eW#  
this.queue=new int[data.length+1]; 1DB{"8ov  
for(int i=0;i queue[++size]=data; V ,p~,rC  
fixUp(size); ^Qx?)(@  
} U3a2wK  
} '/u|32  
gD 6S%O  
private int size=0; aKriO  
ih0a#PB8  
private int[] queue; =Q(J!f  
!~vK[G(R  
public int get() { PG63{  
return queue[1]; i;1pw_K  
} @FN|=?8%  
/Y y)=~t{  
public void remove() { p [C 9g  
SortUtil.swap(queue,1,size--); 0 MK}  
fixDown(1); 5VTVx1P[8  
} aG }oI!  
file://fixdown /(JG\Ut  
private void fixDown(int k) { -n9&W  
int j; ^\ x'4!W  
while ((j = k << 1) <= size) { fY&TI}Y  
if (j < size %26amp;%26amp; queue[j] j++; T&'Jc  
if (queue[k]>queue[j]) file://不用交换 ?A|JKOst]  
break; wPM>-F  
SortUtil.swap(queue,j,k); IQO|)53)  
k = j; >g{&Qx`&  
} Ih:Q}V#6  
} dzOco)y  
private void fixUp(int k) { 3LETzsJ  
while (k > 1) { gvR]"h  
int j = k >> 1; 6NX#=A  
if (queue[j]>queue[k]) H}kZ;8  
break; (s;W>,~q  
SortUtil.swap(queue,j,k); U~][ ph  
k = j; Wm6qy6HR  
} ~Q_7HJ=^$  
} $.Tn\4z&  
c},pu[nL  
} 5FR#CQ  
T<0r,  
} We{@0K/O  
MMFg{8  
SortUtil: 0vj CSU-X  
<rE>?zvm  
package org.rut.util.algorithm; j $q5m 24L  
~wDXjn"U&  
import org.rut.util.algorithm.support.BubbleSort; I0zx'x)F  
import org.rut.util.algorithm.support.HeapSort; qqw P4ceG  
import org.rut.util.algorithm.support.ImprovedMergeSort; ,kJ7c;:i  
import org.rut.util.algorithm.support.ImprovedQuickSort; >O\+9T@  
import org.rut.util.algorithm.support.InsertSort; +u Iq]tqe  
import org.rut.util.algorithm.support.MergeSort; _dm0*T ?  
import org.rut.util.algorithm.support.QuickSort; &qS%~h%2  
import org.rut.util.algorithm.support.SelectionSort; u$R5Q{H_  
import org.rut.util.algorithm.support.ShellSort; 5c]:/9&  
1@p,   
/** $b|LZE\bU.  
* @author treeroot + kMj|()>\  
* @since 2006-2-2 :u,.(INB  
* @version 1.0 C}) Dvh  
*/ Vq+7 /+2"  
public class SortUtil { R)66qRf  
public final static int INSERT = 1; ^Ye(b7Gd  
public final static int BUBBLE = 2; d/9YtG%q  
public final static int SELECTION = 3; m&gd<rt/  
public final static int SHELL = 4; 3l<qcKKc  
public final static int QUICK = 5; ?\8aT"o  
public final static int IMPROVED_QUICK = 6; kaCN^yQ  
public final static int MERGE = 7; Ge`7`D>L  
public final static int IMPROVED_MERGE = 8; jl P*RX  
public final static int HEAP = 9; Sh!c]r>\Q  
L4Jm8sy{  
public static void sort(int[] data) { l48$8Mgrr  
sort(data, IMPROVED_QUICK); 'UsR/h5T  
} `TJhH<z"%  
private static String[] name={ ^ nPy(Q0  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O(W"QY  
}; Nb$0pc1J<  
UAF$bR  
private static Sort[] impl=new Sort[]{ #S?^?3d  
new InsertSort(), %8n<#0v-|4  
new BubbleSort(), u*@R`,Y   
new SelectionSort(), ! :]_-DX  
new ShellSort(), #$BFTlm|  
new QuickSort(), Cw(e7K7&  
new ImprovedQuickSort(), 72Bc0Wg  
new MergeSort(), et+lL"&  
new ImprovedMergeSort(), B9NUafK=  
new HeapSort() X6 BIZ  
}; IRQtA ZV$  
i)e6 U(H  
public static String toString(int algorithm){ ,CyX*k8o  
return name[algorithm-1]; &'/"=lK  
} (O J/u)W^  
O6Py  
public static void sort(int[] data, int algorithm) { 5&s6(?,Eu  
impl[algorithm-1].sort(data); ;9j ]P56  
} {'4#{zmp  
f DXK<v)  
public static interface Sort { 73X*|g  
public void sort(int[] data); ^}~Q(ji7  
} XDCm  
7N 0Bj!  
public static void swap(int[] data, int i, int j) { Hes!uy  
int temp = data; o>M^&)Xs  
data = data[j]; e^eJ!~0  
data[j] = temp; t}R!i-D|HB  
} 8j>V?'Szk  
} R7Qj<,  
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