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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。  t2iFd?  
插入排序: 4hIC&W~f  
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package org.rut.util.algorithm.support; kWFR(J&R  
Lrq&k40y  
import org.rut.util.algorithm.SortUtil; V EzIWNV  
/** S[M$>  
* @author treeroot \X!!(Z;6A  
* @since 2006-2-2 P; Ox|  
* @version 1.0 WlUE&=|Oz2  
*/ ']Z8C)tK  
public class InsertSort implements SortUtil.Sort{ xpz Jt2S  
dkjL;1  
/* (non-Javadoc) Jp- hFD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Z8!iruN  
*/ {`VQL6(i  
public void sort(int[] data) { h.nzkp5  
int temp; /NZ R|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I8y\D,  
} bPNsy@"6  
} a'BBp6  
} O);V{1P  
i&Ea@b  
} *3|KbCX  
!SnpesTn  
冒泡排序: 8Ex0[ e  
rlD@O~P4  
package org.rut.util.algorithm.support; 8QU`SoS9  
EOL03N   
import org.rut.util.algorithm.SortUtil; Jy9&=Qh   
b> | oU  
/** -Db(  
* @author treeroot g(1'i1  
* @since 2006-2-2 c c:xT0Y  
* @version 1.0 ~1p f ?  
*/ Z,*VRuA  
public class BubbleSort implements SortUtil.Sort{ ; ?!sU  
q6q= ,<T%S  
/* (non-Javadoc) 7 UR)4dYA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @:}z\qBM  
*/ q07>FW R  
public void sort(int[] data) { ;RXv%ML  
int temp; [yz;OoA:;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ m9/a!|fBE  
if(data[j] SortUtil.swap(data,j,j-1); Mvux=Ws  
} H_9~gi  
} E)Dik`Ccl  
} 1*Z}M%  
} YV+e];s  
B6BOy~B0  
} @I%m}>4Jm  
b+kb7  
选择排序: 4R6X"T9-  
E>&dG:3no  
package org.rut.util.algorithm.support; 2l9_$evK~  
^pn:SV  
import org.rut.util.algorithm.SortUtil; s:%>H|-  
t^q/'9Ai&J  
/** `| fF)kI  
* @author treeroot N3,EF1%  
* @since 2006-2-2 l! GPOmf9`  
* @version 1.0 &kP>qTI^p~  
*/  M`bK   
public class SelectionSort implements SortUtil.Sort { kHJjdgV  
GE>&fG  
/* uy$o%NL-7  
* (non-Javadoc) _$r+*nGDz  
* #N*~Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nv|&|6?`oK  
*/ o;t{YfK  
public void sort(int[] data) { Ba"Z^(:  
int temp; t ,0~5>5  
for (int i = 0; i < data.length; i++) { ~U`aH~R  
int lowIndex = i; 1_A< nt?'R  
for (int j = data.length - 1; j > i; j--) { y<)x`&pcD  
if (data[j] < data[lowIndex]) { f+rBIE  
lowIndex = j; #6JG#!W  
} /gxwp:&lY  
} Zvc{o8^z  
SortUtil.swap(data,i,lowIndex); 'INdZ8j_  
} cEe>Lyt  
} xSw ^v6!2  
Ax&+UxQ0|  
} +?%huJYK,  
W )\~T:Kn  
Shell排序: X4jtti  
!y6 D+<k*]  
package org.rut.util.algorithm.support; Rt+s\MC^r  
<=WQs2  
import org.rut.util.algorithm.SortUtil; LcQ\d*  
lE4.O  
/** ZZ.GpB.  
* @author treeroot *\emRI>  
* @since 2006-2-2  $///N+B  
* @version 1.0 C/)Xd^#  
*/ 5K,Y6I&$SJ  
public class ShellSort implements SortUtil.Sort{ =V(I  
d>2>mT$U  
/* (non-Javadoc) F;kNc:X`)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !iMsTH<  
*/ y:xZ(RgfF  
public void sort(int[] data) { B&cC;Hw  
for(int i=data.length/2;i>2;i/=2){ r.[9/'>  
for(int j=0;j insertSort(data,j,i); jfk`%C Ek=  
} fF ;-d2mF  
} fxjs"rD5  
insertSort(data,0,1); %{axoGd  
}  a(F%M  
='a$>JVJ5  
/** XSXS;Fh)  
* @param data Nb-;D)W;B  
* @param j 1I_(!F{Ho  
* @param i gE|_hfm(  
*/ *U8Pjb1  
private void insertSort(int[] data, int start, int inc) { rlgp1>89  
int temp; -Zkl\A$>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G >bQlZG  
} LXr nAt  
} >a[)F  
} +Ibcc8Qud  
4&}LYSZl  
} G;MmD?VJ g  
0X.pI1jCO  
快速排序: Yz4Q!tL  
S-*4HV_l  
package org.rut.util.algorithm.support; tv5G']vO\  
6Z0@4_Y@B6  
import org.rut.util.algorithm.SortUtil; aH*)W'N?  
$0 eyp]XC\  
/** PE0A`  
* @author treeroot (]1n!  
* @since 2006-2-2 Ovh[qm?Z  
* @version 1.0 \IIR2Xf,K  
*/ fQM:NI? 9?  
public class QuickSort implements SortUtil.Sort{ '`I&g8I\  
a?_N8|k[  
/* (non-Javadoc) 6|L<? X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `J#(ffo-  
*/ DR;rK[f  
public void sort(int[] data) { rUR{MF&]D  
quickSort(data,0,data.length-1); O$+0 .  
} > T=($:n  
private void quickSort(int[] data,int i,int j){ vdV@G`)HPr  
int pivotIndex=(i+j)/2; gh#9<  
file://swap xx_]e4  
SortUtil.swap(data,pivotIndex,j); WL:CBE#  
pO[ @2tF  
int k=partition(data,i-1,j,data[j]); '(r/@%=U  
SortUtil.swap(data,k,j); !K'j[cA^  
if((k-i)>1) quickSort(data,i,k-1); 1TJ2HO=Y  
if((j-k)>1) quickSort(data,k+1,j); N[:;f^bH49  
vWc=^tT   
} )l~:P uvh  
/** sA[hG*#/S  
* @param data *F[@lY\p  
* @param i  R5(<:]  
* @param j !`JaYUL[e  
* @return q#$Al  
*/ A!\ g!*  
private int partition(int[] data, int l, int r,int pivot) { {1Z8cV   
do{ Dyyf%'\M  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); hOG9  
SortUtil.swap(data,l,r); [@(M%  
} YBehyx2eK  
while(l SortUtil.swap(data,l,r); *]:gEO  
return l; 4$ya$Y%s%  
} Js.2R$o =*  
ihS;q6ln  
} wylbs@  
MOi.bHCQJP  
改进后的快速排序: .SzP ig  
',$Uw|N  
package org.rut.util.algorithm.support; -PPH]?],  
L|A}A[P  
import org.rut.util.algorithm.SortUtil; M{w[hV  
`lygJI?H+{  
/** FxeDjAP  
* @author treeroot e)"] H*  
* @since 2006-2-2 Q8OA{EUtq  
* @version 1.0 l];w,(u{  
*/ :sDE 'o  
public class ImprovedQuickSort implements SortUtil.Sort { 2:3-mWE  
TrD2:N}dI  
private static int MAX_STACK_SIZE=4096; Y">m g=B  
private static int THRESHOLD=10; 1j"_@?H[  
/* (non-Javadoc) ]zK'aod  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2[-@ .gH  
*/ : .Y  
public void sort(int[] data) { [;~:',vHQf  
int[] stack=new int[MAX_STACK_SIZE]; 4LO4SYW7  
YW9r'{(D(I  
int top=-1; )lh48Ag0t;  
int pivot; }ya@*jH  
int pivotIndex,l,r; 5G  @  
$De14  
stack[++top]=0; P&I%!'<   
stack[++top]=data.length-1; `< _A#@  
TkHyXOk"Ky  
while(top>0){ vM G>Xb  
int j=stack[top--]; %c:v70*h=  
int i=stack[top--]; [&y="6No  
s[<a(  
pivotIndex=(i+j)/2; a_}k^zw(  
pivot=data[pivotIndex]; =)QtE|p,77  
;J [ed>v;3  
SortUtil.swap(data,pivotIndex,j); /q[5-96c  
K=lm9K  
file://partition 0oR'"Vo  
l=i-1; A)v! {  
r=j; _:"PBN9  
do{ }Rl^7h<!  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2yB)2n#ut  
SortUtil.swap(data,l,r); 9)2 kjBeb  
} 1V ?)T  
while(l SortUtil.swap(data,l,r); q+<<Ku(20  
SortUtil.swap(data,l,j); CVxqNR*DN  
- QPM$  
if((l-i)>THRESHOLD){ DpA"5RV  
stack[++top]=i; gbf2ty  
stack[++top]=l-1; Yvmo%.oU  
} Z/ w}so  
if((j-l)>THRESHOLD){ CcDmZ  
stack[++top]=l+1; j<,Ho4v}_  
stack[++top]=j; 'OEh'\d+x  
} i*ibx;s-  
3jR>   
} JdYmUM|K/c  
file://new InsertSort().sort(data); B8=r^!jEL  
insertSort(data); n{Ce%gy  
} 5l_ >QB  
/** 4S9hz  
* @param data +`jI z'+  
*/ ahJ -T@  
private void insertSort(int[] data) { ^v2-"mX<  
int temp; AlPk o($E*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MZPXI{G  
} ?so=k&I-M  
} sWtT"7>x  
} q!fdiv`  
1VXyn\  
} +,8j]<wpo  
WF#3'"I  
归并排序: yZHh@W4v  
NCu:E{([  
package org.rut.util.algorithm.support; ,q_'l?Pn  
 s*XE  
import org.rut.util.algorithm.SortUtil; UYw_k\  
*HC[LM  
/** 3P}^Wu  
* @author treeroot k 'CM^,F&  
* @since 2006-2-2 P }BU7`8  
* @version 1.0 ^k#.;Q#4  
*/ }^b7x;O|  
public class MergeSort implements SortUtil.Sort{ 5>S=f{ghFw  
ng0tNifZ;  
/* (non-Javadoc) --D&a;CO}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A,H|c="  
*/ M'(4{4rC  
public void sort(int[] data) { (B/od#nU  
int[] temp=new int[data.length]; hwD;1n  
mergeSort(data,temp,0,data.length-1); 6cQ)*,Q  
} "J.7@\^ h/  
T> < Vw  
private void mergeSort(int[] data,int[] temp,int l,int r){ Q85Y6',  
int mid=(l+r)/2; [\_#n5  
if(l==r) return ; b '9L}q2m  
mergeSort(data,temp,l,mid); 9e aqq  
mergeSort(data,temp,mid+1,r); V eD<1<  
for(int i=l;i<=r;i++){ 'c[|\M!u  
temp=data; DTx!# [  
} o)B`K."  
int i1=l; v,eTDgw  
int i2=mid+1; O>vbAIu  
for(int cur=l;cur<=r;cur++){ tMy<MO)Ei  
if(i1==mid+1) e6 &-f  
data[cur]=temp[i2++];  sJ3O ]  
else if(i2>r) 0`H)c) pP  
data[cur]=temp[i1++]; eV"Za.a.  
else if(temp[i1] data[cur]=temp[i1++]; kO)+%'L!8  
else W]TO%x{  
data[cur]=temp[i2++]; Id(wY$C&>  
} HNMVs]/e  
} S7(Vc H  
{J[5 {]Je[  
} 0b3z(x!O  
7,v}Ap]Pa  
改进后的归并排序: ?7eD< |  
;)c 4  
package org.rut.util.algorithm.support; I k[{,p  
' K\ $B_  
import org.rut.util.algorithm.SortUtil; d*cAm$  
ZC!GKW P2  
/** ^q@6((O  
* @author treeroot )@hG#KMK  
* @since 2006-2-2 _T^+BUw  
* @version 1.0 n !oxwA!  
*/ Cg]Iz< <bE  
public class ImprovedMergeSort implements SortUtil.Sort { r5s$#,O/&Q  
{=Y3[  
private static final int THRESHOLD = 10; Vi:<W0:  
)a;ou>u  
/* KD(}-zUs  
* (non-Javadoc) <\6<-x(H5  
* .29y3}[PO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tR{@NFUcu  
*/ $LXz Q>w9  
public void sort(int[] data) { }i\U,mH0_&  
int[] temp=new int[data.length]; $%GW~|S\C  
mergeSort(data,temp,0,data.length-1); J;R1OJs S  
} m Bc2x8g)  
15)y]N={^  
private void mergeSort(int[] data, int[] temp, int l, int r) { }$wWX}@  
int i, j, k; dU<qFxW  
int mid = (l + r) / 2; "4Bk  
if (l == r) \~4IOu  
return; +#wh`9[wBt  
if ((mid - l) >= THRESHOLD) H%&e[PU  
mergeSort(data, temp, l, mid); 24; BY'   
else gQ8FjL6?  
insertSort(data, l, mid - l + 1); 4r+s" |  
if ((r - mid) > THRESHOLD) &X%vp?p  
mergeSort(data, temp, mid + 1, r); E4;@P']`  
else :,~]R,tJQ  
insertSort(data, mid + 1, r - mid); 7wA.:$  
5;4bZ3e,0  
for (i = l; i <= mid; i++) { O)EA2`)E  
temp = data; Ug~ ]!L  
} m,1Hlp  
for (j = 1; j <= r - mid; j++) { AzlZe\V?)~  
temp[r - j + 1] = data[j + mid]; um}%<Cy[  
} Z<ABK`rEO  
int a = temp[l]; R>#BJ^>=  
int b = temp[r]; mu/GOEZ5  
for (i = l, j = r, k = l; k <= r; k++) { ?V9Da;cj  
if (a < b) { r,FPTf  
data[k] = temp[i++]; qHtonJc  
a = temp; Q"VS;uh.v  
} else { ))xyaYIZkk  
data[k] = temp[j--]; lij>u  
b = temp[j]; l+!eC lM%  
} 5p]Cwj<u  
} wiE'6CM  
} DX\|*:,  
tUXly|k  
/** Q.zE}ZS  
* @param data \(g/::|  
* @param l %c`P`~sp  
* @param i 3;t{V$  
*/ 'G>gNq  
private void insertSort(int[] data, int start, int len) { (h $[g"8  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); i7#PYt  
} Q}qw` L1  
} 9=FqI50{  
} qwd7vYBc,  
} M0$wTmXM  
"IE*MmsEz  
堆排序: MjrI0@R  
Pr_$%x9D  
package org.rut.util.algorithm.support; a|u&N:v7B  
&'{?Y;A  
import org.rut.util.algorithm.SortUtil; }r _d{nhi  
:u4q.^&!e  
/** a"Q>K7K  
* @author treeroot Kx<T;iJ}  
* @since 2006-2-2 <GRplkf`  
* @version 1.0 8+=-!": ]  
*/ QH]G>+LI5  
public class HeapSort implements SortUtil.Sort{ wSGW_{;-  
.`; bQh'!  
/* (non-Javadoc) F&[MyXU4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3~5 %6`  
*/ 7LZ A!3  
public void sort(int[] data) { I4RUXi 5  
MaxHeap h=new MaxHeap(); |vVcO  
h.init(data); M tD{/.D>  
for(int i=0;i h.remove(); V#-\ 4`c  
System.arraycopy(h.queue,1,data,0,data.length); >mXq= 9L4  
} yG~7Xo5  
wrJ:jTh  
private static class MaxHeap{ 6:$+"@ps  
zh6 0b{  
void init(int[] data){ 079mn/8;  
this.queue=new int[data.length+1]; "eOFp\vPr  
for(int i=0;i queue[++size]=data; bayDdR4T  
fixUp(size); E!SxO~  
} 2z+-vT%  
} \7elqX`.yY  
fk!P#  
private int size=0; g$a 5  
'|~L9t  
private int[] queue; YVT\@+C'  
%!HBPLk  
public int get() { 3^x C=++  
return queue[1]; 66jL2XU<  
} HgfeSH  
uu`G<n  
public void remove() { oD?c]}3  
SortUtil.swap(queue,1,size--); }bM=)eUfX  
fixDown(1); zmdu\:_X9  
} Hs>|-iDs(  
file://fixdown 9 %MHIY5  
private void fixDown(int k) { S#g=;hD  
int j; g]a5%8*{  
while ((j = k << 1) <= size) { .Km6 (U  
if (j < size %26amp;%26amp; queue[j] j++; >?yxig:_  
if (queue[k]>queue[j]) file://不用交换 9 U!-Zn!  
break; /~nPPC  
SortUtil.swap(queue,j,k); ?VaAVxd29  
k = j; >|| =#;  
} +w(>UBy-  
} aH(B}wh{  
private void fixUp(int k) { Y%"73.x  
while (k > 1) { }+3v5Nz;  
int j = k >> 1; tJgo% P1  
if (queue[j]>queue[k]) @Q#<-/  
break; ,'>,N/JA  
SortUtil.swap(queue,j,k); 3<vw#]yL  
k = j; n |Is&fy  
} )cUFb:D*"  
} '$m uA\  
8<X,6  
} !hS~\+E  
5L%\rH&N  
} s J~WzQ  
E>2~cC*  
SortUtil: hnD=DLW $  
<-avC/M$d  
package org.rut.util.algorithm; h|Os T  
G j9WUv[P  
import org.rut.util.algorithm.support.BubbleSort; WK)2/$7@  
import org.rut.util.algorithm.support.HeapSort; ;E0aTV)Zp  
import org.rut.util.algorithm.support.ImprovedMergeSort; :3$$PdZ  
import org.rut.util.algorithm.support.ImprovedQuickSort; c(5r  
import org.rut.util.algorithm.support.InsertSort; fBZAO  
import org.rut.util.algorithm.support.MergeSort; <~ 9a3c?  
import org.rut.util.algorithm.support.QuickSort; nPh| rW=  
import org.rut.util.algorithm.support.SelectionSort; ER4j=O#  
import org.rut.util.algorithm.support.ShellSort; `:&jbd4H  
B^yA+&3HI  
/** Cg4l*"_  
* @author treeroot }US^GEs(  
* @since 2006-2-2 "PhP1;A9,  
* @version 1.0 xfsf  
*/ L28DBjE)A  
public class SortUtil { 64jFbbd-/  
public final static int INSERT = 1; O>)Fl42IeD  
public final static int BUBBLE = 2; p.50BcDg  
public final static int SELECTION = 3; SuuLB6{u3  
public final static int SHELL = 4; d> OLnG> F  
public final static int QUICK = 5; `L#`WC@[o  
public final static int IMPROVED_QUICK = 6; !`$xN~_  
public final static int MERGE = 7; :,]*~Nl  
public final static int IMPROVED_MERGE = 8; t=B>t S.hO  
public final static int HEAP = 9; } 63Qh}_Y  
QW[ gDc  
public static void sort(int[] data) { I&lb5'6D  
sort(data, IMPROVED_QUICK); {!G  
} kl/eJN'S  
private static String[] name={ Z#nPn>,q  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [(65^Zl`  
}; 8kA2.pIk  
=k +nC)e  
private static Sort[] impl=new Sort[]{ xLp<G(;  
new InsertSort(), -Nn@c|fz  
new BubbleSort(), YB&b_On,f  
new SelectionSort(), 'Bc{N^  
new ShellSort(), %D9,Femt  
new QuickSort(), +T|M U  
new ImprovedQuickSort(), P g{/tM Y  
new MergeSort(), A.@/~\  
new ImprovedMergeSort(), +^0Q~>=VD  
new HeapSort() r iuG,$EX  
}; Utv#E.VI  
[>^xMF]$2  
public static String toString(int algorithm){ %n7Y5|Uh  
return name[algorithm-1]; 3LK]VuZE  
} ^xZo .P  
T)Ohk(jK1  
public static void sort(int[] data, int algorithm) { VGDds  
impl[algorithm-1].sort(data); %hnv go:^g  
} gp`H>Sn.|  
m.|__L  
public static interface Sort { md.#n  
public void sort(int[] data); @s[Vtw%f  
} #Y9'n0 AL  
qT}AY.O%^  
public static void swap(int[] data, int i, int j) { ZA>p~Zt  
int temp = data; Y  c]  
data = data[j]; (}jYi*B  
data[j] = temp; W:z?w2{VI(  
} `5$B"p&i  
} *RpBKm&^7  
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