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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。 [r'A8!/|[  
插入排序: aEVy20wd  
+!$`0v   
package org.rut.util.algorithm.support; [%~yY&  
8yH)9#>  
import org.rut.util.algorithm.SortUtil; ^r mQMjF  
/** ]I zD`  
* @author treeroot S.<4t*,  
* @since 2006-2-2 G!h75G20  
* @version 1.0 2Vw2r@S/  
*/ QBN\wL8g  
public class InsertSort implements SortUtil.Sort{ f/iMI)J  
3=*ur( Qy  
/* (non-Javadoc) cL~YQJYp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -8<vWe  
*/ < $otBC/%  
public void sort(int[] data) { k]`-Y E  
int temp; }Gy M<!:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1uB$@a\  
} MX.?tN#F|H  
} 1X9s\JKQ  
} ["4Tn0g ;  
5K)_w:U X  
} (Nv -wU  
xtLP 4VL  
冒泡排序: =2ED w_5E  
TU*EtE'g/  
package org.rut.util.algorithm.support; pVrY';[,|  
y\Utm$)j  
import org.rut.util.algorithm.SortUtil; EbVva{;#$;  
)feZ&G]  
/** Re %dNxJ=  
* @author treeroot rPqM&&+  
* @since 2006-2-2 \xv(&94U  
* @version 1.0 Dg{d^>T!_x  
*/ e?*Teb ?R  
public class BubbleSort implements SortUtil.Sort{ cUdS{K&K  
%\n|2*r  
/* (non-Javadoc) B&0 W P5OF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g|7o1{   
*/ Jmi,;Af'/  
public void sort(int[] data) { $bFK2yx?=  
int temp; cC+2%q B  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Im@OAR4,R  
if(data[j] SortUtil.swap(data,j,j-1); gq/Za/ !6  
} X{OWDy  
} o)^ Wz  
} Y$]zba  
} jlFlhj:/I  
bv b \G  
}  0yq  
hqmE]hwc  
选择排序: L/`1K_\l  
N'R^gL  
package org.rut.util.algorithm.support; |%mZ|,[  
n-yUt72  
import org.rut.util.algorithm.SortUtil; ^2+ Vt=*  
Fb =uN   
/** Q}KOb4D  
* @author treeroot M*kE |q/K  
* @since 2006-2-2 $Th)z}A}EA  
* @version 1.0 ^879sI  
*/ [|=M<>?[  
public class SelectionSort implements SortUtil.Sort { ZDgT"53   
'wG1un;t  
/* \AKP ea=  
* (non-Javadoc) /UK]lP^w]!  
* C&MqH.K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dS4zOz"  
*/ )H{1 Xjh-  
public void sort(int[] data) { tHZ"o!(S  
int temp; Zr2!}jD9a  
for (int i = 0; i < data.length; i++) { Ez5t)l-  
int lowIndex = i; 40h$- VYT/  
for (int j = data.length - 1; j > i; j--) { 80[# 6`  
if (data[j] < data[lowIndex]) { vk4 8&8  
lowIndex = j; Kw" y#Ys]  
} #X?[")R  
} jYRSV7d  
SortUtil.swap(data,i,lowIndex); nW7: ]  
} bS r"k  
} j9h fW'  
=2Yt[8';  
} YZ4`b-  
KGg S"d  
Shell排序: ]0ErT9  
#?>)5C\Hqy  
package org.rut.util.algorithm.support; ]Z8u0YtM)  
4^l9d  
import org.rut.util.algorithm.SortUtil; 4oiE@y&{4  
`cXLa=B)9  
/** >RkaFcq  
* @author treeroot 8X"4RyNSn  
* @since 2006-2-2 cOX)+53  
* @version 1.0 wTU$jd1;+  
*/ w|s2f`!  
public class ShellSort implements SortUtil.Sort{ n-cI~Ax+4  
`hkvxt  
/* (non-Javadoc) YYYF a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `@],J  
*/ E OXkMr  
public void sort(int[] data) { <KU 0K  
for(int i=data.length/2;i>2;i/=2){ hQm=9gS  
for(int j=0;j insertSort(data,j,i); 0't)-Pj+,  
} =CK%Zo  
}  Jc ze.t  
insertSort(data,0,1); M?" 4 {  
} f/UU{vX(  
nLz;L r!  
/** A_wf_.l4h  
* @param data l_Lz9k  
* @param j Jj>Rzj!m  
* @param i ~^Cx->l  
*/ r*vh3.Agl  
private void insertSort(int[] data, int start, int inc) { PKrG6% W+  
int temp; 9u{[e"  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &'W7-Z\j-  
} ?j.a>{  
} Q!@M/@-Ky  
} E2>{ seZ  
K9%rr_ja!  
} 04Zdg:[3-!  
zMbFh_dcq  
快速排序: 18rV Acj  
Y:TfD{Xgc  
package org.rut.util.algorithm.support; QjY}$  
7CH&n4v  
import org.rut.util.algorithm.SortUtil; KJec/qca  
cLf90|YFp  
/** L{%L*z9J  
* @author treeroot FXJ0 G>F  
* @since 2006-2-2 %u66H2  
* @version 1.0 uD=Kar  
*/ yC\UT ~j/  
public class QuickSort implements SortUtil.Sort{ z.-yL,Rc`-  
Eb4NPWo  
/* (non-Javadoc) ";rXCH.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |> STb\  
*/ 94#,dA,M  
public void sort(int[] data) { ~F'6k&A^q  
quickSort(data,0,data.length-1); m_/U  t  
} ,FzkGB#  
private void quickSort(int[] data,int i,int j){ JT0j2_*Rr  
int pivotIndex=(i+j)/2; XYWyxx5`  
file://swap %eDSo9Y  
SortUtil.swap(data,pivotIndex,j); by @qg:  
@iuX~QA[9  
int k=partition(data,i-1,j,data[j]); @rbd`7$%  
SortUtil.swap(data,k,j); azv173XZ  
if((k-i)>1) quickSort(data,i,k-1); )v_Wn[Y.H  
if((j-k)>1) quickSort(data,k+1,j); T"vf   
7wx=#  
} G|Et'k.F4  
/** u.X]K:Yow  
* @param data [E a{);  
* @param i V0,JTWc  
* @param j g ,JfT^  
* @return .4%z$(+6  
*/ 3(V0,L'1  
private int partition(int[] data, int l, int r,int pivot) { qo3+=*"V  
do{ -fA=&$V  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); zb9G&'7  
SortUtil.swap(data,l,r); zBy} >Jx  
} JyE-c}I  
while(l SortUtil.swap(data,l,r); Wf3BmkZzz  
return l; GbQi3%  
} #9|&;C5',!  
; oa+Z:;f  
} vEg%ivj3  
0QZT<Zs  
改进后的快速排序: X|{Tljn  
pmB {b  
package org.rut.util.algorithm.support;  aO<7a 6  
hc q&`Gun  
import org.rut.util.algorithm.SortUtil; 8C*@d_=q  
WBWW7HK  
/** ]?=87w  
* @author treeroot " 7^nRJy  
* @since 2006-2-2 p\ =T#lb  
* @version 1.0 uG7]s]Wdz;  
*/ wx3_?8z/O  
public class ImprovedQuickSort implements SortUtil.Sort { <K^a2 D  
ulsU~WW7r  
private static int MAX_STACK_SIZE=4096; 8<Iq)A]'Z  
private static int THRESHOLD=10; % vUU Fub  
/* (non-Javadoc) I9qZE=i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _rYW|*cIF  
*/ 3F|p8zPS  
public void sort(int[] data) { >M2~p& Si  
int[] stack=new int[MAX_STACK_SIZE]; pL{oVk#,  
Vhv'Z\  
int top=-1; vGv<WEE  
int pivot; {4 Yx h8  
int pivotIndex,l,r; ?. ` ga*   
G7&TMg7i  
stack[++top]=0; DK?aFSf\  
stack[++top]=data.length-1; (o|bst][S  
BZW03e8|  
while(top>0){ phu,&DS!  
int j=stack[top--]; 8HKv_vl  
int i=stack[top--]; !rRBy3&  
z9S (<  
pivotIndex=(i+j)/2; k)I4m.0a5  
pivot=data[pivotIndex]; 7/~=[#]*  
iG54 +]  
SortUtil.swap(data,pivotIndex,j); (5!'42  
2JK '!Ry)  
file://partition Kc\8GkdB  
l=i-1; 0L/chP  
r=j; LnE/62){N  
do{ bSw^a{~)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;EJ!I+�  
SortUtil.swap(data,l,r); L /ibnGhq]  
} Y_[7q<L  
while(l SortUtil.swap(data,l,r); `r SOt *<  
SortUtil.swap(data,l,j); P0}B&B/a:  
Fqw4XR_`~  
if((l-i)>THRESHOLD){ E \/[hT  
stack[++top]=i; #[jS&rr(  
stack[++top]=l-1; 4x)vy -y  
} 1+*sEIC"  
if((j-l)>THRESHOLD){ 5/nL[4Z  
stack[++top]=l+1;  'l5  
stack[++top]=j; &6 s&nx  
} x,mt}>  
C1NU6iV^z  
} U 2YY   
file://new InsertSort().sort(data); PyfWIU7O  
insertSort(data); =OF hM7  
} '/xynk%)xw  
/** '=$`NG8 l  
* @param data m'}`+#C%)  
*/ m:)&:Y0 (a  
private void insertSort(int[] data) { W|8VE,"7  
int temp; Q8`V0E\~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7vZO;FGtG  
} F6sQeU  
} y\_+,G0  
} FcM)v"bF&]  
1?&|V1vc  
} eXKEx4rU  
;&=jSgr8  
归并排序: ;av!fK  
Dc0=gq0  
package org.rut.util.algorithm.support; !+3&%vQ)  
U3&GRY|##  
import org.rut.util.algorithm.SortUtil; D'!JV1Q  
z"mVE T  
/** yP3I^>AZ3  
* @author treeroot Ua \f]y  
* @since 2006-2-2 $CMye; yL  
* @version 1.0 #3*cA!V.<  
*/ Ct-eD-X{  
public class MergeSort implements SortUtil.Sort{ Zy7kPL;b  
(UkDww_!  
/* (non-Javadoc) hiVa\s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ({rcH.:  
*/ ]^"Lc~w8&  
public void sort(int[] data) { }Ecv6&G  
int[] temp=new int[data.length]; K*5gb^Ul  
mergeSort(data,temp,0,data.length-1); h.K"v5I*  
} Ew0)MZ.#  
v`K%dBa  
private void mergeSort(int[] data,int[] temp,int l,int r){ 8gNTW7W/  
int mid=(l+r)/2; YT8q0BR]  
if(l==r) return ; :N<Qk  
mergeSort(data,temp,l,mid); _fk}d[q0  
mergeSort(data,temp,mid+1,r); gN<7(F  
for(int i=l;i<=r;i++){ ]8%E'd  
temp=data; PsUO8g'\  
} 82,^Pu  
int i1=l; RTlC]`IGT  
int i2=mid+1; )zO|m7  
for(int cur=l;cur<=r;cur++){ 8F>9CO:&N  
if(i1==mid+1) ?{'_4n3O  
data[cur]=temp[i2++]; T`@brL  
else if(i2>r) X% 05[N  
data[cur]=temp[i1++]; <J%Z?3@ T  
else if(temp[i1] data[cur]=temp[i1++]; Kkq-x'gt^  
else Y$v d@Q  
data[cur]=temp[i2++]; XdA]);,  
} I<RARB-j  
} ]CNPy$>*  
bxYSZCo*  
} mQ1  
U<&=pv  
改进后的归并排序: H^kOwmSzh  
5xr>B7MRM?  
package org.rut.util.algorithm.support; hkl0N%[  
rrfJs  
import org.rut.util.algorithm.SortUtil; TY% c`Q5  
g8E5"jpXx3  
/** a^LckHPI>  
* @author treeroot ZB1%Kn#zo4  
* @since 2006-2-2 (5] [L<L  
* @version 1.0 IN3-ZNx  
*/ }^$#vJ(a7K  
public class ImprovedMergeSort implements SortUtil.Sort { ffk >IOH  
Sydl[c pH$  
private static final int THRESHOLD = 10; W3[>IH"+  
{f/]K GGk  
/* vmNo~clt\  
* (non-Javadoc) %Y0lMNP  
* xkFa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [?N,3  
*/ rPy,PQG2w  
public void sort(int[] data) { 6t7FklM%  
int[] temp=new int[data.length]; j.6!T'$|  
mergeSort(data,temp,0,data.length-1); c[2ikI,n[  
} G HQ~{  
CC^]Y.9  
private void mergeSort(int[] data, int[] temp, int l, int r) { .*6NqX$  
int i, j, k; 'eBD/w5U  
int mid = (l + r) / 2; q 1xSylE  
if (l == r) '%/=\Q`  
return; $hCS-9%&  
if ((mid - l) >= THRESHOLD) >|RoLV  
mergeSort(data, temp, l, mid); MPnMLUB$\  
else *PlKl_nP6  
insertSort(data, l, mid - l + 1); $W}:,]hoj  
if ((r - mid) > THRESHOLD) JcYY*p  
mergeSort(data, temp, mid + 1, r); #QsJr_=  
else Hc8^w6S1@  
insertSort(data, mid + 1, r - mid); D8! Y0  
*VXx\&  
for (i = l; i <= mid; i++) { Pi1LOCq  
temp = data; G)YmaHeI;[  
} - s'W^(  
for (j = 1; j <= r - mid; j++) { Q'jGNWep  
temp[r - j + 1] = data[j + mid]; 7./-|#  
} vG6*[c8  
int a = temp[l]; 'wFhfZB1!B  
int b = temp[r]; 9[\do@  
for (i = l, j = r, k = l; k <= r; k++) { =/j!S|P  
if (a < b) { OH`zeI,[*  
data[k] = temp[i++]; Chl^LEN:  
a = temp; 1F>8#+B/W  
} else { >q?{'#i /  
data[k] = temp[j--]; !/H `   
b = temp[j]; #l+Rs3T:  
} z7BFkZ6+  
} ?/T=G k  
} zk3\v "  
OR+_s @Yg  
/** _~tF2`,Y_p  
* @param data f uU"  
* @param l \kKd:C{  
* @param i .KG9YGL#  
*/ euV!U}Xr  
private void insertSort(int[] data, int start, int len) { POc<XLZB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ze9n}oN  
} W\0u[IV.x  
} ODKh/u_  
} z^*g 2J,  
} Iw?f1 ]  
,hJx3g5#n  
堆排序: h8M_Uk  
^o>WCU=  
package org.rut.util.algorithm.support; 6NyUGGRq  
_7u&.l<;  
import org.rut.util.algorithm.SortUtil; +B8oW3v# )  
[vuikJP>1k  
/** Nf* .r  
* @author treeroot Zw4%L?   
* @since 2006-2-2 RWu< dY#ym  
* @version 1.0 Wn=I[K&&  
*/ s!D?%  
public class HeapSort implements SortUtil.Sort{ (7,Q4T  
Jb9 @U /<\  
/* (non-Javadoc) GHLFn~z@XJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i&m6;>?`  
*/ !jEV75  
public void sort(int[] data) { 5i{J0/'Xu)  
MaxHeap h=new MaxHeap(); Q;y4yJ$wI  
h.init(data); j5n"LC+oz  
for(int i=0;i h.remove(); L`O7-'`  
System.arraycopy(h.queue,1,data,0,data.length); 45Zh8k  
} ./DlHS;  
Zs0;92WL  
private static class MaxHeap{ 1W0[|Hf2v*  
WHjJR   
void init(int[] data){ XmVst*2=  
this.queue=new int[data.length+1]; S}Z@g  
for(int i=0;i queue[++size]=data; f2KH&j>~r  
fixUp(size); x6\VIP"9L  
} d7&d FvG  
} JX>`N5s  
F!?f|z,/  
private int size=0; &>Y.$eW_  
 cFjD*r-  
private int[] queue; 7FaF]G  
[z_z tK1  
public int get() { KdTWi;mV2-  
return queue[1]; o?= &kx  
} >*^SQ{9  
PRyzvc~  
public void remove() { x=\W TC  
SortUtil.swap(queue,1,size--); tk 5 p@l  
fixDown(1); z^/9YzA!6  
} a>Aq/=  
file://fixdown ?< Ma4yl</  
private void fixDown(int k) { ofYZ! -V  
int j; :UKc:JVNM  
while ((j = k << 1) <= size) { [oXr6M:  
if (j < size %26amp;%26amp; queue[j] j++; 1Z(9<M1!M  
if (queue[k]>queue[j]) file://不用交换 g>b{hkIXg  
break; =yJV8%pa  
SortUtil.swap(queue,j,k); Gt,VSpb~s  
k = j; PCH$)F4^  
} (v0Q.Q@ <  
} 5VVU%STP  
private void fixUp(int k) { p~(STHDe#  
while (k > 1) { "-IF_Hid  
int j = k >> 1; -" r4  
if (queue[j]>queue[k]) ;D(6Gy9~  
break; Z% `$id  
SortUtil.swap(queue,j,k); 0uGTc[^^M  
k = j; k $# ,^)T  
} #>z!ns  
} 4^ 0CHy  
O2lM;="  
} %w!x \UV  
['6Sq@c)  
} mZnsr@KF  
zSOZr2- ^a  
SortUtil: +t]Ge >S  
:hf%6N='kI  
package org.rut.util.algorithm; (K ]wk9a  
}_+):<Db  
import org.rut.util.algorithm.support.BubbleSort; G}dq ft5"  
import org.rut.util.algorithm.support.HeapSort; *^Z -4  
import org.rut.util.algorithm.support.ImprovedMergeSort; K'K/}q<  
import org.rut.util.algorithm.support.ImprovedQuickSort; ?|Wxqo  
import org.rut.util.algorithm.support.InsertSort; Uw)B(;Hy?  
import org.rut.util.algorithm.support.MergeSort; O /&Qzt  
import org.rut.util.algorithm.support.QuickSort; Nk$|nn9#'  
import org.rut.util.algorithm.support.SelectionSort; 6>'>BamX  
import org.rut.util.algorithm.support.ShellSort; }Os7[4 RW  
L5wFbc"u  
/** zP$"6~.  
* @author treeroot _?Ly7*UML  
* @since 2006-2-2 !|J2o8g  
* @version 1.0 BY$L[U;@T  
*/ qzu(4*Gk6  
public class SortUtil { sei%QE]!/  
public final static int INSERT = 1; [XP\WG>s  
public final static int BUBBLE = 2; W$gjcsv  
public final static int SELECTION = 3; D3+<16[,  
public final static int SHELL = 4; [|C  
public final static int QUICK = 5; T!1XL7  
public final static int IMPROVED_QUICK = 6; |Fx~M,Pzg  
public final static int MERGE = 7; "DecS:\  
public final static int IMPROVED_MERGE = 8; %^u e  
public final static int HEAP = 9; i`w&{WTRQ  
F]RZP/D`  
public static void sort(int[] data) { FlbM(ofY  
sort(data, IMPROVED_QUICK); x*:"G'zT  
} u*T#? W?  
private static String[] name={ 8;3I:z&muQ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" h,MaF<~  
}; &i *e&{L7  
b>& 3 XDz  
private static Sort[] impl=new Sort[]{ /~/nhKm  
new InsertSort(), 6""i<oR  
new BubbleSort(), d @b ]/  
new SelectionSort(), e,*@+E\4  
new ShellSort(), aL8Z|*  
new QuickSort(), K[q-[q#yc  
new ImprovedQuickSort(), PD^Cj?wm  
new MergeSort(), ztC,[   
new ImprovedMergeSort(), 1E$^ul-v  
new HeapSort() V'l9fj*E  
}; "Q[?W( SA  
;F /w&u.n  
public static String toString(int algorithm){ }l5Q0'  
return name[algorithm-1]; 87R$Y> V  
} =o[H2o y  
{t('`z  
public static void sort(int[] data, int algorithm) { oe=W}y_k  
impl[algorithm-1].sort(data); VexQ ]  
} (%4O\ s#l  
VE^IA\J x  
public static interface Sort { X/D% cQ6  
public void sort(int[] data); NLev(B:OQH  
} Z:VT%-  
6 _#CvQ  
public static void swap(int[] data, int i, int j) { <07~EP  
int temp = data; af=lzKt*  
data = data[j]; 6+SaO !lR  
data[j] = temp; g:&PjKA  
} Gr~J-#a3~D  
} yDi'@Z9R?  
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