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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。 ;BKU _}k=  
插入排序: )8SWU)/  
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package org.rut.util.algorithm.support; dep"$pys>  
j0(jXAc;UB  
import org.rut.util.algorithm.SortUtil; 5OX[)Li  
/** %&q}5Y4!  
* @author treeroot  nb6Y/`G  
* @since 2006-2-2 KeXt"U  
* @version 1.0 n1:q:qMR1  
*/ & d$X:  
public class InsertSort implements SortUtil.Sort{ vbZ!NO!H  
S2nX{=  
/* (non-Javadoc) Gzg3{fXl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]0j_yX  
*/ !]RSG^%s{  
public void sort(int[] data) { ~P;A 9A(k  
int temp; j2.7b1s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S kB*w'k  
} yf4L0.  
} ik;F@kdm`  
} t V>qV\>  
N]6t)Zv  
} e0otr_)3F  
%~P T7"4  
冒泡排序: %H,s~IU  
\j3dB tc  
package org.rut.util.algorithm.support; ?,8+1"|$A]  
ju .pQ=PSX  
import org.rut.util.algorithm.SortUtil; rPqM&&+  
a(D=ZKbVU  
/** 9 %i\)  
* @author treeroot ~131|e`C  
* @since 2006-2-2 p8?v o ?^  
* @version 1.0 ecR)8^1 '  
*/ ]^>:)q  
public class BubbleSort implements SortUtil.Sort{ =  
3eXIo=  
/* (non-Javadoc) vLyazVj..  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H\\FAOj  
*/ 5Z5x\CcC3  
public void sort(int[] data) { <V Rb   
int temp; Id>4fF:o  
for(int i=0;i for(int j=data.length-1;j>i;j--){ t8rFn  
if(data[j] SortUtil.swap(data,j,j-1); D|Wlq~IpQ  
} Kfr1k  
} kxJ[Bi#  
} 4v3gpLH  
} ;ko6igx)+  
F"O\uo:3  
} eF9GhwE=  
VuH ->  
选择排序: IF\ @uo`  
2lOUNxQ$  
package org.rut.util.algorithm.support; =WBfaxL}  
DuZZu  
import org.rut.util.algorithm.SortUtil; Q~VM.G  
x\f~Gtt7Y  
/** Gn_DIFa  
* @author treeroot rDa{Ve  
* @since 2006-2-2 & d2 `{H  
* @version 1.0 js@L%1r#L  
*/ 4KnBb_w  
public class SelectionSort implements SortUtil.Sort { zB~ <@  
Y:t?W  
/* f.+1Ubq!5  
* (non-Javadoc) WvSm!W  
* V[KN,o{6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pt,L  
*/ a !%,2|U  
public void sort(int[] data) { ;l ZKgi8`  
int temp; Fb =uN   
for (int i = 0; i < data.length; i++) { |?8nO.C~V  
int lowIndex = i; 1gbFl/i6T  
for (int j = data.length - 1; j > i; j--) { &b}g.)RI  
if (data[j] < data[lowIndex]) { !2l2;?jM  
lowIndex = j; 6=;(~k&x9:  
} $sE=[j'v  
} H"6x/&s.=k  
SortUtil.swap(data,i,lowIndex); [|=M<>?[  
} =DD KGy.g  
} nReld :#T  
?_Z -} f  
} RLB"}&SF]  
'xGhMgR;  
Shell排序: *Q/^ib9=  
o5NmNOXm  
package org.rut.util.algorithm.support; :Ev gUA\4  
t'@mUX:-A  
import org.rut.util.algorithm.SortUtil; J ~3m7  
}X^MB  
/** ,aC}0t  
* @author treeroot :T G;W,`.V  
* @since 2006-2-2 k_7b0 dr%F  
* @version 1.0 40h$- VYT/  
*/ fs&$?mHL){  
public class ShellSort implements SortUtil.Sort{ -P/DmSS8V  
Q47R`"  
/* (non-Javadoc) J 3C^tV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jqc}mI\#  
*/ ,}gJY^X+  
public void sort(int[] data) { 6&ut r!\7  
for(int i=data.length/2;i>2;i/=2){ e'G=.:  
for(int j=0;j insertSort(data,j,i); 1p$(\  
} "8ellKh  
} kaB|+U9^  
insertSort(data,0,1); o /[7Vo  
} c&',#.9  
R^o535pozc  
/** 8Sj<,+XFq  
* @param data wGKxT ap  
* @param j <TtPwUX  
* @param i abR<( H12  
*/ zdRVAcrwQ  
private void insertSort(int[] data, int start, int inc) { tJrGRlB>  
int temp; 4=Ru{ewRV  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); : #CWiq("%  
} "5~?`5Ff  
} ;'8P/a$  
} d\]KG(T  
%bN{FKNN  
} LkS tU)  
|<,qnf | -  
快速排序: vu\W5M  
'kt6%d2  
package org.rut.util.algorithm.support;  Jc ze.t  
M?" 4 {  
import org.rut.util.algorithm.SortUtil; ofQs /  
O0L]xr  
/** s)r !3HS  
* @author treeroot 9U6$-]J  
* @since 2006-2-2 bHnKtaK4c  
* @version 1.0 x-CjxU3  
*/ B#%QY\<X  
public class QuickSort implements SortUtil.Sort{ )__sw  
l! 88|~  
/* (non-Javadoc) u0&R*YV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jc9C|r  
*/ Xpg -rxX  
public void sort(int[] data) { :p/=KI_  
quickSort(data,0,data.length-1); )LFbz#;Y  
} oOpEpQ}}q  
private void quickSort(int[] data,int i,int j){ lt6wmCe  
int pivotIndex=(i+j)/2; ue@/o,C>  
file://swap 9S@x  
SortUtil.swap(data,pivotIndex,j); #&Tm%CvB  
/g{*px|  
int k=partition(data,i-1,j,data[j]); ="& GU%$  
SortUtil.swap(data,k,j); w)+1^eW  
if((k-i)>1) quickSort(data,i,k-1); xB Wl|j  
if((j-k)>1) quickSort(data,k+1,j); Cy$~H  
[#uhMn^  
} 49=pB,H;H  
/** }={@_g#  
* @param data 8fP2qj0  
* @param i k4LrUd  
* @param j Rh^@1{yr  
* @return -J+1V{  
*/ ~iH a^i?2*  
private int partition(int[] data, int l, int r,int pivot) { +\Jo^\  
do{ it\$Pih]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `D[O\ VE  
SortUtil.swap(data,l,r); IdAh)#) 7  
} yO%^[c?  
while(l SortUtil.swap(data,l,r); ,FzkGB#  
return l; JT0j2_*Rr  
} N)g_LL>^  
$J4\jIipL  
} w gS'/  
z Fm`e:td  
改进后的快速排序: V_J0I*Qa4  
&!X<F,  
package org.rut.util.algorithm.support; p]RQ-0  
&SbdX   
import org.rut.util.algorithm.SortUtil; ';FJs&=I  
wz`% ( \  
/** @`L ;_S+  
* @author treeroot V*\hGNV  
* @since 2006-2-2 S}JOS}\^j  
* @version 1.0 1cOR?=G~  
*/ Pq [_(Nt  
public class ImprovedQuickSort implements SortUtil.Sort { DfAF-Yhut  
2.%)OC!q&5  
private static int MAX_STACK_SIZE=4096; tJ;qZyy(  
private static int THRESHOLD=10; $ uTrM8  
/* (non-Javadoc) q1:dcxR[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K^fs #7  
*/ lg-_[!4Z  
public void sort(int[] data) { _S ng55s  
int[] stack=new int[MAX_STACK_SIZE]; >va_,Y}  
=fRS UtX  
int top=-1; 1}wDc$O  
int pivot; 9lYfII}4(  
int pivotIndex,l,r; BC.3U.  
d9S/_iCI  
stack[++top]=0; qBBCnT  
stack[++top]=data.length-1; g8MW6Y  
u:pOP  
while(top>0){ )]C]KB  
int j=stack[top--]; b:F;6X0~Hl  
int i=stack[top--]; ,EEAxmf  
+S4>}2N33  
pivotIndex=(i+j)/2; &f. |MNz;  
pivot=data[pivotIndex]; 3Y38l P:>h  
NRtH?&7  
SortUtil.swap(data,pivotIndex,j); r=n{3o+  
gd0)s1{9  
file://partition 9$HKP9G  
l=i-1; B3ItZojAuw  
r=j; V>QyiB  
do{ Vt}QP Nt  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @h|qL-:!vG  
SortUtil.swap(data,l,r); ASbI c"S6  
} DW7E ]o  
while(l SortUtil.swap(data,l,r); doL-G?8B  
SortUtil.swap(data,l,j); Zu|NF uFI  
J;_4 3eS  
if((l-i)>THRESHOLD){ L&kCI`Tb  
stack[++top]=i; D^ @@ P  
stack[++top]=l-1; ;"Gy5  
} O ixqou  
if((j-l)>THRESHOLD){ {4 Yx h8  
stack[++top]=l+1; p($vM^_<"  
stack[++top]=j; %9>w|%+;U+  
} $t%IJT  
z<55[~3  
} F&wAre<  
file://new InsertSort().sort(data); mh}D[K=~%  
insertSort(data); N[W#wYbH  
} 0C :8X   
/** j_g(6uZhz3  
* @param data j ^j"w(a  
*/ ly` A,dh  
private void insertSort(int[] data) {  =Iop  
int temp; |-V:#1wR.]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &233QRYM  
} (y]Z*p:EW  
} L@H^?1*L?  
} U_IGL  
o.!o4&W H  
} ;iiCay37F  
h_4*?w  
归并排序: ir}z^+  
 _ VuWo  
package org.rut.util.algorithm.support; &qg6^&  
yx|iZhK0:}  
import org.rut.util.algorithm.SortUtil; >)M1X?HI5  
.@)vJtH)  
/** L/rf5||@  
* @author treeroot ;:bp?(  
* @since 2006-2-2 M584dMM  
* @version 1.0 GxzO|vFQ  
*/ Aeh #  
public class MergeSort implements SortUtil.Sort{ *S*49Hq7c  
I4@XOwl{P  
/* (non-Javadoc) 1@OpvO5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,1~zYL?  
*/ d?X,od6  
public void sort(int[] data) { E:8*o7  
int[] temp=new int[data.length]; BmV `<Q,  
mergeSort(data,temp,0,data.length-1); 8  *f 9  
} /HRKw D  
>ZkL`!:s  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ni>Ns=n  
int mid=(l+r)/2; 60%nQhb  
if(l==r) return ; }MOXJb @  
mergeSort(data,temp,l,mid); op`9(=DJ]  
mergeSort(data,temp,mid+1,r); %}TJr]'F  
for(int i=l;i<=r;i++){ E$ \l57  
temp=data; [E p'm  
} NC~?4F[  
int i1=l; =i  vlS  
int i2=mid+1; f%EHzm/V  
for(int cur=l;cur<=r;cur++){ *xxk70Cb  
if(i1==mid+1) b, a7XANsh  
data[cur]=temp[i2++]; 129\H< m  
else if(i2>r) .Qrpz^wdt  
data[cur]=temp[i1++]; }=EJM7sM|k  
else if(temp[i1] data[cur]=temp[i1++]; `\VtTS  
else d\>XfS  
data[cur]=temp[i2++]; -& (iU#W  
} \ 86 g y/  
} OD~Q|I(j  
t4UK~ {gh  
} LA;f,CQ  
2!-Q!c`y  
改进后的归并排序: c #{|sR5  
0M;g&&mF  
package org.rut.util.algorithm.support; 7_oUuNw  
[;ZCq!)>  
import org.rut.util.algorithm.SortUtil; H8w[{'Mei  
CjPdN#*l  
/** f@;pN=PS  
* @author treeroot 3r+c&^  
* @since 2006-2-2 VLm\PS   
* @version 1.0 Ph P)|P  
*/ ~4+Y BN  
public class ImprovedMergeSort implements SortUtil.Sort { 'sI ne>  
O W.CU=XU  
private static final int THRESHOLD = 10; w98M #GqV  
VX8rM!3  
/* 1_{e*=/y  
* (non-Javadoc) \Ebh6SRp\  
* b|AjB:G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wzy[sB274  
*/ By6O@ .\V  
public void sort(int[] data) { 1P"7.{  
int[] temp=new int[data.length]; W)ug %@)  
mergeSort(data,temp,0,data.length-1); 2 )o2d^^  
} Ut2T:%m{  
424iFc[  
private void mergeSort(int[] data, int[] temp, int l, int r) { @>(JC]HtR  
int i, j, k; kAp#6->(q  
int mid = (l + r) / 2; v CsE|eMP  
if (l == r) xKE=$SV(  
return; !B Pm{_C  
if ((mid - l) >= THRESHOLD) :2xGfy??  
mergeSort(data, temp, l, mid); O$,  
else X[h{g`  
insertSort(data, l, mid - l + 1); })] iN "  
if ((r - mid) > THRESHOLD) g5+m]3#t  
mergeSort(data, temp, mid + 1, r); g8E5"jpXx3  
else a^LckHPI>  
insertSort(data, mid + 1, r - mid); ZB1%Kn#zo4  
(5] [L<L  
for (i = l; i <= mid; i++) { qery|0W  
temp = data; }^$#vJ(a7K  
} pmBN?<  
for (j = 1; j <= r - mid; j++) { w!<e#Z]3b  
temp[r - j + 1] = data[j + mid]; !x-__[#  
} 3M?O(oO  
int a = temp[l]; %1p-DX6  
int b = temp[r]; %|x9C,0p#  
for (i = l, j = r, k = l; k <= r; k++) { .BJoY <P*  
if (a < b) { 3(K.:376  
data[k] = temp[i++]; 8!35 K  
a = temp; j)8$hK/e0.  
} else { +mBS&FK  
data[k] = temp[j--]; to).PI?  
b = temp[j]; r&xIVFPI[  
} O1jiD_Y!9  
} x7 e0&  
} F^{31iU~CX  
zf)*W#+  
/** 4r_*: $g  
* @param data '2Zs15)V  
* @param l '%/=\Q`  
* @param i y(<{e~  
*/ AVLY|79#  
private void insertSort(int[] data, int start, int len) { >|RoLV  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "Ai\NC  
} <LH6my  
} \YJQN3^46>  
} vbJdhaf  
} ]0<K^OIY  
Q[3hOFCX  
堆排序: ,5<AV K-#Q  
`vzMuL;  
package org.rut.util.algorithm.support; +pSo(e(  
!otseI!!/  
import org.rut.util.algorithm.SortUtil; >a*dI_XE  
M*n94L=Sg&  
/** oMAUR "  
* @author treeroot 6@lZVM)E  
* @since 2006-2-2 VTR4uT-  
* @version 1.0 z l`m1k-X  
*/ ;yqHt!N  
public class HeapSort implements SortUtil.Sort{ cg^~P-i@*  
{9;-5@b  
/* (non-Javadoc) *6<4ECa7C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ).GM 0-y  
*/ TR*vZzoy  
public void sort(int[] data) { 0J[B3JO@M  
MaxHeap h=new MaxHeap(); oMYFfnoAa  
h.init(data); &Oz  
for(int i=0;i h.remove(); 3%r/w7Fc  
System.arraycopy(h.queue,1,data,0,data.length); PUD8  
} ~pH!.|k-&  
sa<\nH$_X  
private static class MaxHeap{ ]O:u9If  
5h Sd,#:  
void init(int[] data){ 28M^ F~0  
this.queue=new int[data.length+1]; &b,A-1`w_  
for(int i=0;i queue[++size]=data; dpchZ{  
fixUp(size); r2tE!gMC  
} =3% GLj  
} vv)O+xt  
Ok)f5")N %  
private int size=0; I+W,%)vb  
7g Ou|t  
private int[] queue; ^-Arfm%dn  
#a@jt  
public int get() { W,,3@:  
return queue[1]; 0iC5,  
} 1,zc8>M  
-#;ZZ \fdj  
public void remove() { %L)QTv/  
SortUtil.swap(queue,1,size--); BE&8E\w  
fixDown(1); *1-0s*T  
} HD{u#~8{  
file://fixdown dg*xo9Xi`  
private void fixDown(int k) { EJz!#f~  
int j; . WJ  
while ((j = k << 1) <= size) { Q~ Nq5[  
if (j < size %26amp;%26amp; queue[j] j++; +B8oW3v# )  
if (queue[k]>queue[j]) file://不用交换 bUy!hS;s  
break; dtV*CX.D.7  
SortUtil.swap(queue,j,k); rFt +Y})  
k = j; gkTwGI+w  
} -;6uN\gq  
} r$M<vo6C  
private void fixUp(int k) { ^; U}HAY  
while (k > 1) { \Js*>xA  
int j = k >> 1; Nk%$;Si  
if (queue[j]>queue[k]) XmwR^  
break;  HC/a  
SortUtil.swap(queue,j,k); ~#so4<A`3  
k = j; #~m^RoE  
} Exv!!0Cd^  
} ~ [/jk !G  
WC_U'nTu4  
} AK'3N1l`  
m=COF$<  
} F#Pn]  
Je"XIhBr  
SortUtil: :qR8 e J  
U+ Yu_=o{  
package org.rut.util.algorithm; E*tT^x)  
2|1CGHj\  
import org.rut.util.algorithm.support.BubbleSort; `B8`<3k/(  
import org.rut.util.algorithm.support.HeapSort; <jFov`^  
import org.rut.util.algorithm.support.ImprovedMergeSort; ZF#lh]  
import org.rut.util.algorithm.support.ImprovedQuickSort; e{4e<hd  
import org.rut.util.algorithm.support.InsertSort; 1W0[|Hf2v*  
import org.rut.util.algorithm.support.MergeSort; ;*nzb!u\\  
import org.rut.util.algorithm.support.QuickSort; DH$Nz  
import org.rut.util.algorithm.support.SelectionSort; .2rpQa/h  
import org.rut.util.algorithm.support.ShellSort; ;sUvY*Bcm  
cw0 @Z0  
/** #jxPh!%9  
* @author treeroot p}I\H ^"8+  
* @since 2006-2-2 x6\VIP"9L  
* @version 1.0 v13\y^t  
*/ Mw+ l>92  
public class SortUtil { 2.@IfBF6  
public final static int INSERT = 1; JX>`N5s  
public final static int BUBBLE = 2; $%&OaAg  
public final static int SELECTION = 3; {pre|r\  
public final static int SHELL = 4; (B@\Dw8^  
public final static int QUICK = 5; )VG>6x  
public final static int IMPROVED_QUICK = 6; -!T24/l  
public final static int MERGE = 7; nnu#rtvZp}  
public final static int IMPROVED_MERGE = 8; 6&LmR75C  
public final static int HEAP = 9; XdlA)0S)  
+#UawYLJ  
public static void sort(int[] data) { >#T?]5Z'MF  
sort(data, IMPROVED_QUICK); (bNoe(<qU  
} \Q|,0`  
private static String[] name={  9,tk  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cuf]-C1_  
}; +uNMyVH  
p? VDBAx  
private static Sort[] impl=new Sort[]{ 0Nk!.gY  
new InsertSort(), ?caHS2%?ae  
new BubbleSort(), *cX i*7|=  
new SelectionSort(), cV`NQt<W  
new ShellSort(), v$;URF%^  
new QuickSort(), a 7b1c!  
new ImprovedQuickSort(), U: <  
new MergeSort(), J*%IvRg  
new ImprovedMergeSort(), 3F6A.Ny  
new HeapSort() &`]T# ">  
}; RA+M.  
X}QcXc.d  
public static String toString(int algorithm){ [oXr6M:  
return name[algorithm-1]; @L607[!?  
} 8{&.[S C7  
%l%2 hvGZ  
public static void sort(int[] data, int algorithm) { ?d3<GhzlR3  
impl[algorithm-1].sort(data); w&hCt c  
} [%Z{Mp'g  
?aB%h |VA  
public static interface Sort { }KftV nD?  
public void sort(int[] data); &[PA?#I`  
} E3CwA8)k  
KNF{NFk  
public static void swap(int[] data, int i, int j) { )C0I y.N-  
int temp = data; uXA}" f2  
data = data[j]; r0\C2g_X  
data[j] = temp; {8;}y[R  
} B1Z;  
} -" r4  
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