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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。  ZPf&4#|  
插入排序: B+FTkJ0t+G  
X[J<OTj`$  
package org.rut.util.algorithm.support; q`AsnAzo&  
pll5m7[  
import org.rut.util.algorithm.SortUtil; ~Dg:siw  
/** Z@q1&}D!  
* @author treeroot .Z 7t E?  
* @since 2006-2-2 GUQ3XF\  
* @version 1.0 @!$xSH  
*/ `c:r`Oi?  
public class InsertSort implements SortUtil.Sort{ '(lsJY[-x  
1mV ' ~W  
/* (non-Javadoc) ~ &/Nl_#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uJ"#j X  
*/ ,,FhE  
public void sort(int[] data) { Xk:x=4u&  
int temp; ''2:ZXX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DI{Qs[  
} m<Gd 6V5  
} qPu?rU{2  
} El}~3|a?  
25G~rklk  
} "dG*HKrr  
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冒泡排序: 0>Kgz!I  
Y}vV.q  
package org.rut.util.algorithm.support; o &b\bK%E  
a#0*#&?7@  
import org.rut.util.algorithm.SortUtil; n~,6!S  
1\TkI=N3  
/** J^kSp  
* @author treeroot rp ]H&5.*  
* @since 2006-2-2 /0L]Pf;  
* @version 1.0 dn5t7D^ x  
*/ RG1#\d-fE  
public class BubbleSort implements SortUtil.Sort{ PtjAu  
$9@Z\0   
/* (non-Javadoc) 8v)Z/R-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _=w=!U&W  
*/ &S^a_L:  
public void sort(int[] data) { +C$wkx]  
int temp; i;2V   
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'pAq;2AA  
if(data[j] SortUtil.swap(data,j,j-1); <SRSJJR|(  
} Or1ikI"  
} C-2#-{<  
} \a:-xwUu<  
} :2L-Nf  
l) Cg?9  
} G!GGT?J  
'kCr1t  
选择排序: Xt*h2&  
Jl) Q #  
package org.rut.util.algorithm.support; g*U[?I"sC  
( Q k*B  
import org.rut.util.algorithm.SortUtil; -A8CW9|mk  
}8'bXG+  
/** j W|M)[KJN  
* @author treeroot C It@xi#I  
* @since 2006-2-2 j&?@:Zg v  
* @version 1.0 {NIE:MXX  
*/ yzCamm4~0  
public class SelectionSort implements SortUtil.Sort { l;JB;0<s"  
4H%Ai(F}_  
/* ue6&)7:~  
* (non-Javadoc) $Jy1=/W&  
* sU?%"q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BG20R=p  
*/ _%aJ/Y0Cy  
public void sort(int[] data) { X pf:I  
int temp; SnW>`  
for (int i = 0; i < data.length; i++) { i\k>2df  
int lowIndex = i; &FzZpH  
for (int j = data.length - 1; j > i; j--) { .GDNd6[K7  
if (data[j] < data[lowIndex]) { G C3G=DTt  
lowIndex = j; bu r0?q  
} &Sp2['a!  
} "f`{4p0v  
SortUtil.swap(data,i,lowIndex); B}p{$g!  
} n|I5ylt  
} 5F|oNI}$:  
h.h\)>DM@  
} #ANbhHG  
h>'Mh;+  
Shell排序: w97%5[-T  
]EPFyVt~3  
package org.rut.util.algorithm.support; _0e;&2')  
f+W %X  
import org.rut.util.algorithm.SortUtil; zH+a*R  
!@kwHJkv  
/** g flu!C6  
* @author treeroot <MBpV^Y}  
* @since 2006-2-2 ;JQ;LbEn  
* @version 1.0 P>i[X0UnL  
*/ z 7g=L@   
public class ShellSort implements SortUtil.Sort{ 6w:M_tDM  
> hmBV7nR  
/* (non-Javadoc) m'.y,@^B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "_T8Km008  
*/ g O ;oM?|  
public void sort(int[] data) { P+nd?:cz  
for(int i=data.length/2;i>2;i/=2){ aqzIMOAf  
for(int j=0;j insertSort(data,j,i); ;/g Bjp]H  
} a$ FO5%o  
} {]6Pd`-  
insertSort(data,0,1); ?B~S4:9  
} },LO]N|  
8C>\!lW"  
/** Dm 0Ts~  
* @param data (^).$g5Hg  
* @param j ~*Kk+w9H<  
* @param i :N ~A7@  
*/ of k@.TmO  
private void insertSort(int[] data, int start, int inc) { { vOr'j@  
int temp; z->[:)c  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6<h ==I   
} ~y.t amNW  
} a08`h.dyN  
} $(8CU$gi=  
aBonq]W  
} sbi+o,%1  
yO`HL'SMo  
快速排序: AeN$AqQd/  
)eaEc9o>  
package org.rut.util.algorithm.support; :@8N${7`$A  
lqoJ2JMy  
import org.rut.util.algorithm.SortUtil; =AIeYUh  
T>2_r6;  
/** \x9.[?;=e  
* @author treeroot 7uW=fkxT  
* @since 2006-2-2 _ ^ny(zy(  
* @version 1.0 gONybz6]  
*/ gJC~$/2  
public class QuickSort implements SortUtil.Sort{ %!r@l7<  
g`9`/  
/* (non-Javadoc) M\rZr3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L.tW]43K  
*/ f5ttQ&@FF  
public void sort(int[] data) { j|Hyv{sM  
quickSort(data,0,data.length-1); {\62c;.  
} |.EC>D /  
private void quickSort(int[] data,int i,int j){ 3JJEj1O  
int pivotIndex=(i+j)/2; [;RO=  
file://swap { usv*Cm  
SortUtil.swap(data,pivotIndex,j); '`nf7b(  
QRKr2:o{  
int k=partition(data,i-1,j,data[j]); DP5}q"l  
SortUtil.swap(data,k,j); zz_(*0,Qcr  
if((k-i)>1) quickSort(data,i,k-1); mo()l8  
if((j-k)>1) quickSort(data,k+1,j); |Jpi|'  
.Gq]Mrim9G  
} ;\48Q;  
/** Lsb`,:  
* @param data p38RgEf  
* @param i .TpM3b#r  
* @param j dp DPSI  
* @return IJ E{JH  
*/ {&,MkWgG  
private int partition(int[] data, int l, int r,int pivot) { '}BYMEd/m%  
do{ }LTyXo  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6h9Hf$'  
SortUtil.swap(data,l,r); Mv\]uAT`  
} tx_h1[qi  
while(l SortUtil.swap(data,l,r); gO%o A} !i  
return l; w)7s]Ld  
} m4~>n(  
 Xn=  
} w gU2q|  
O~DdMW  
改进后的快速排序: sX[k}=HCK  
uG,*m'x']  
package org.rut.util.algorithm.support; caD)'FSES  
 SodYb  
import org.rut.util.algorithm.SortUtil; 9gQ ]!Oq  
VbfTdRD-  
/** ZZ2vdy38  
* @author treeroot ffI z>Of:  
* @since 2006-2-2 n =qu?xu  
* @version 1.0 WlW7b.2.  
*/ `RHhc{  
public class ImprovedQuickSort implements SortUtil.Sort { D&*'|}RZ  
 4"~F  
private static int MAX_STACK_SIZE=4096; ,,+iPGa<  
private static int THRESHOLD=10; x.kIzI5  
/* (non-Javadoc) kG>m(n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G/4~_\YMq  
*/ Vqp 3'=No  
public void sort(int[] data) { _;'<}a  
int[] stack=new int[MAX_STACK_SIZE]; lOEB ,/P  
2}0S%R(  
int top=-1; u{8:VX  
int pivot; [DD#YL\P  
int pivotIndex,l,r; ;Q\MH t*  
5fY7[{ 2  
stack[++top]=0; y134m  
stack[++top]=data.length-1; OOZxs?pR  
;i-<dAV8B  
while(top>0){ 'bn$"A"{o  
int j=stack[top--]; 0HPqoen$  
int i=stack[top--]; [ XBVES8  
z$Z{ LR  
pivotIndex=(i+j)/2; i{biQ|,.sL  
pivot=data[pivotIndex]; 'mYUAVmSC#  
)QAS7w#k  
SortUtil.swap(data,pivotIndex,j); 3A!Qu$r9  
(-%1z_@Y  
file://partition e N^6gub  
l=i-1; ycj\5+ g  
r=j; 2g HRfTF  
do{ ('1]f?:M  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $0&<Jx  
SortUtil.swap(data,l,r); XCj8QM.o  
} g). IF.  
while(l SortUtil.swap(data,l,r); t~M0_TnXlP  
SortUtil.swap(data,l,j); M$Ow*!DfP  
IN?6~O p  
if((l-i)>THRESHOLD){ o:PdPuZVR  
stack[++top]=i; CZDWEM}   
stack[++top]=l-1; 2Dw}o;1'  
} l5FKw;=K}:  
if((j-l)>THRESHOLD){ 7bYN  
stack[++top]=l+1; {]Ec:6  
stack[++top]=j; !0X/^Xv@=  
} dh V6r  
B3Daw/G  
} l#&\,T  
file://new InsertSort().sort(data); )-^[;:B\k"  
insertSort(data); z<OfSS_]R  
} FZ5 Ad&".@  
/** ^\g?uH6k U  
* @param data Bmv5yc+;  
*/ 'J8Ga<s7C  
private void insertSort(int[] data) { -\~HAnh  
int temp; #L+ZHs~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A7R [~  
} 1s-=zs  
} p9[gG\  
} ?U3~rro!  
*T2kxN,Ik  
} >!PCEw<i  
r#NR3_@9  
归并排序: q"VC#9 7`  
l*b0uF  
package org.rut.util.algorithm.support; FJ2~SKWT  
1pM>-"a8j  
import org.rut.util.algorithm.SortUtil; V|)nU sU  
#D^( dz*  
/** 6ag0c&k  
* @author treeroot DHVfb(H5e  
* @since 2006-2-2 juB/?'$~  
* @version 1.0 y*T@_on5  
*/ B pp(5  
public class MergeSort implements SortUtil.Sort{ og`g]Z<I  
^%NjdZuDO  
/* (non-Javadoc) jdd3[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H8h,JBg5<F  
*/ =\g K<Xh  
public void sort(int[] data) { 8Ud.}< Zi  
int[] temp=new int[data.length]; ?i$MinK  
mergeSort(data,temp,0,data.length-1); H]( TSt<Q"  
} +r$VrNVs  
!RwMUnp  
private void mergeSort(int[] data,int[] temp,int l,int r){ >'v{o{k|C  
int mid=(l+r)/2; $fwj8S7$  
if(l==r) return ; B~`:?f9ny5  
mergeSort(data,temp,l,mid); :.crES7<[X  
mergeSort(data,temp,mid+1,r); ~vKDB$2  
for(int i=l;i<=r;i++){ , RU  
temp=data; H(DI /"N  
} QJ,~K&?  
int i1=l; /J!~0~F  
int i2=mid+1; L RPdA "Z  
for(int cur=l;cur<=r;cur++){ v,c;dlg_  
if(i1==mid+1) Vo9Fl Yj  
data[cur]=temp[i2++]; / gP"X1.  
else if(i2>r) 9^@#Ua  
data[cur]=temp[i1++]; e/zz.cd){  
else if(temp[i1] data[cur]=temp[i1++]; &"=<w  
else !=]cASPGD  
data[cur]=temp[i2++]; 9G)fJr  
} +K48c,gt?  
} QxiAC>%K  
iz2;xa*  
} Xbc:Vr  
m'U>=<!D  
改进后的归并排序: m]&y&oz  
.x_F4#Ka  
package org.rut.util.algorithm.support; MZ_dI"J ,  
J'*`K>wV  
import org.rut.util.algorithm.SortUtil; m">2XGCn  
WB\chb%ej#  
/** ^F87gow%`B  
* @author treeroot 8:k-]+#o  
* @since 2006-2-2 ( c +M"s  
* @version 1.0 c Sktm&SP  
*/ ,R=)^Gh{  
public class ImprovedMergeSort implements SortUtil.Sort { k.wm{d]J  
nw=:+?  
private static final int THRESHOLD = 10; :</KgR0I  
?;DzWCL~9  
/* BCt>P?,UO  
* (non-Javadoc) BoofJm  
* ]EEac  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q6d>tqWhq  
*/ trlZ  
public void sort(int[] data) { 9%DLdc\z;  
int[] temp=new int[data.length]; u=ZZ;%Rvd  
mergeSort(data,temp,0,data.length-1); gCM(h[7A  
} %Ktlez:S  
RIq\IQ_|  
private void mergeSort(int[] data, int[] temp, int l, int r) { .|GnTC q  
int i, j, k; Z"E2ZSa0  
int mid = (l + r) / 2; .>^U mM  
if (l == r) =HHb ]JE  
return; 6IKi*}  
if ((mid - l) >= THRESHOLD) v+ "9&  
mergeSort(data, temp, l, mid); :CG;:( |  
else %=5m!"F  
insertSort(data, l, mid - l + 1); G9h Bp  
if ((r - mid) > THRESHOLD) jNW/Biy4u  
mergeSort(data, temp, mid + 1, r); @"0n8y  
else aV G4D f  
insertSort(data, mid + 1, r - mid); jiP^Hz"e  
.p-T >  
for (i = l; i <= mid; i++) { wZ/ b;%I!  
temp = data; :{~TG]4M  
} [wcp2g3Px  
for (j = 1; j <= r - mid; j++) { W+#Zmvo  
temp[r - j + 1] = data[j + mid]; "\"sM{x  
} 0-8'. C1v  
int a = temp[l]; Yn8aTg[J  
int b = temp[r]; ;%4N@Z  
for (i = l, j = r, k = l; k <= r; k++) { "PC9[i  
if (a < b) { zOMU&;.\  
data[k] = temp[i++]; <Y^)/ s  
a = temp; !}L cJ  
} else { JmbWEX|  
data[k] = temp[j--]; 90!67Ap`x  
b = temp[j]; #LfoG?k1K  
} z&Lcl{<MA  
} Fd>epvR  
} pxHJX2  
MO_;8v~0  
/** }M~[8f ]  
* @param data N6!$V7oT  
* @param l YfVZ59l4y6  
* @param i "sUmke-#  
*/ ^(1S`z$  
private void insertSort(int[] data, int start, int len) { L+NrU+:=C  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {'[S.r`  
} jC L 1Bj  
} VZr AZV^c  
} cGS7s 8U  
} O 718s\#  
zl!Y(o!@  
堆排序: \Wf1b8FW  
GqD_6cdh  
package org.rut.util.algorithm.support; oVeC@[U  
 Yk yB  
import org.rut.util.algorithm.SortUtil; | gP%8nh'C  
Ll0"<G2t  
/** 4i(?5p>f  
* @author treeroot ;<nQl,2N  
* @since 2006-2-2 &\AW} xp  
* @version 1.0 vXeI)vFK  
*/ I'%ASZ  
public class HeapSort implements SortUtil.Sort{ Un\ T} c  
{[[/*1r|  
/* (non-Javadoc) wZKEUJpQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?m dGMf)  
*/ fb D  
public void sort(int[] data) { \Qei}5P,  
MaxHeap h=new MaxHeap(); T:!Re*=JJ  
h.init(data); CL<m+dW%*  
for(int i=0;i h.remove(); ]rc =oP;  
System.arraycopy(h.queue,1,data,0,data.length); eT Z2f  
} "i~~Q'=7  
i|QL6e*0  
private static class MaxHeap{ u]s}@(+.  
&T\,kq >)  
void init(int[] data){ zOA2chy4  
this.queue=new int[data.length+1]; eWTbHF  
for(int i=0;i queue[++size]=data; FmC [u  
fixUp(size); 4?.L+wL  
} )1o<}7  
} yf2$HF  
A!^gF~5  
private int size=0; |!"qz$8fB  
~=Q Tv8  
private int[] queue; ]%Z7wF</  
*#Hw6N0#   
public int get() { \#q|.d$ u  
return queue[1]; p _q]Rt  
} 4 -Cca  
y(*#0fJrTV  
public void remove() { CyD)=e {  
SortUtil.swap(queue,1,size--); kyu PN<?  
fixDown(1); A,]%*kg2  
} B dKD%CJ[  
file://fixdown m! _*Q  
private void fixDown(int k) { vDcYz,  
int j; j=n<s</V  
while ((j = k << 1) <= size) { #Iwxt3K  
if (j < size %26amp;%26amp; queue[j] j++; c`xgz#]v  
if (queue[k]>queue[j]) file://不用交换 a474[?  
break; CCU<t Q  
SortUtil.swap(queue,j,k); Ff{dOV.i  
k = j; Tb<}GcwJ  
} =Bw2{]w  
} L1YiXJ,T,  
private void fixUp(int k) { DBk]2W|i  
while (k > 1) { ;)rXQm  
int j = k >> 1; o2W^!#]=  
if (queue[j]>queue[k]) 0. mS^g,M-  
break; 6uKS!\EY|  
SortUtil.swap(queue,j,k); BSHtoD@e7  
k = j; R;`C;Rbf  
} a/dq+  
} <zt124y-6  
tl+ 9SBl  
} S0mzDLgE  
j6DI$tV~  
} ?OF9{$m3?  
9#b/D&pX5  
SortUtil: ky=h7#wdv-  
#gSLFM{p  
package org.rut.util.algorithm; +wxDK A_  
,'&H`h54  
import org.rut.util.algorithm.support.BubbleSort; `PS>"-AY2  
import org.rut.util.algorithm.support.HeapSort; 5`p>BJ+n  
import org.rut.util.algorithm.support.ImprovedMergeSort; vXT>Dc2\!  
import org.rut.util.algorithm.support.ImprovedQuickSort; +~f=L- >  
import org.rut.util.algorithm.support.InsertSort; 2VaKt4+`  
import org.rut.util.algorithm.support.MergeSort; (Fs{~4T  
import org.rut.util.algorithm.support.QuickSort; TeNPuY~WP  
import org.rut.util.algorithm.support.SelectionSort; Aqo90(jffx  
import org.rut.util.algorithm.support.ShellSort; U6F1QLSLz  
ED^0t  
/** z#^;'nnw  
* @author treeroot yoG*c%3V?  
* @since 2006-2-2 5&TH\2u  
* @version 1.0 f[wxt n'r  
*/ a6!|#rt  
public class SortUtil { ':!aFMj^  
public final static int INSERT = 1; I'0{Q`}  
public final static int BUBBLE = 2; &gsBbQ+qA  
public final static int SELECTION = 3; h&2l0 |8k  
public final static int SHELL = 4; OTzuOP 8  
public final static int QUICK = 5; +F+M[ef<ws  
public final static int IMPROVED_QUICK = 6; >)+N$EN  
public final static int MERGE = 7; wEC,Mbn  
public final static int IMPROVED_MERGE = 8; M< /  
public final static int HEAP = 9; ;@xlrj+  
4d\V=_);r  
public static void sort(int[] data) { V6Y0#sTU  
sort(data, IMPROVED_QUICK); `G`y A%  
} c3.;o  
private static String[] name={ xSq{pxX  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" '^M.;Giz  
}; ZlP+t>  
n j2=}6  
private static Sort[] impl=new Sort[]{ ;OZl' . %`  
new InsertSort(), |enb5b78  
new BubbleSort(),  "3/&<0k  
new SelectionSort(), BhhFij4  
new ShellSort(), <QD[hO^/  
new QuickSort(), y/+ IPR  
new ImprovedQuickSort(), psUT2  
new MergeSort(), q _Z+H4  
new ImprovedMergeSort(),  hLj7i?  
new HeapSort() 0o!mlaU#  
}; }=Ul8 <  
aK/fZ$Qc  
public static String toString(int algorithm){ _@W1?;yD  
return name[algorithm-1]; %j.n^7i]^:  
} ~;#sj&~  
R3%%;`c=  
public static void sort(int[] data, int algorithm) { qA"BoSw4  
impl[algorithm-1].sort(data); 51Vqbtj^  
} %SuELm  
 1D_&n@  
public static interface Sort { UE/JV_/S;  
public void sort(int[] data); t YxN^VqU  
} nW}jTBu_K+  
LI].*n/v  
public static void swap(int[] data, int i, int j) { t<o7 S:a"  
int temp = data; '6; {DX  
data = data[j]; o (4gh1b%  
data[j] = temp; 05g %5vHF  
} U.X` z3q  
} 5z =}o/?  
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