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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。 rQzdHA  
插入排序: 7fq Q  
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package org.rut.util.algorithm.support; jA "}\^%3  
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import org.rut.util.algorithm.SortUtil; NioqJG?p  
/** h`U-{VIrqi  
* @author treeroot `N[@lV\xp!  
* @since 2006-2-2 JOuy_n  
* @version 1.0 nHRsr x  
*/ cPcH 8Vd  
public class InsertSort implements SortUtil.Sort{ i>S@C@~  
*Y8 5ev q  
/* (non-Javadoc) W(s5mX,Kv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1*A^v  
*/ bF9.k  
public void sort(int[] data) { I{w(`[Nxw*  
int temp; bR3Crz(9G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i).Vu}W#S  
} <5L99<E  
} _L=-z*a\  
} >4@w|7lS  
g]j&F65D  
} a;5clonB  
`BZ|[ q3  
冒泡排序: *& w/*h$!  
W7C1\'T  
package org.rut.util.algorithm.support; N!.o`4 "z  
BqJ|l7+  
import org.rut.util.algorithm.SortUtil; .S:(O+#Gm  
C'@I!m._i  
/** `(j~b=PP  
* @author treeroot =m<b+@?T  
* @since 2006-2-2 io\t>_  
* @version 1.0 ty5# a  
*/ :Xy51p`.;]  
public class BubbleSort implements SortUtil.Sort{ NcbW"Qv3  
Lp%J:ogV`  
/* (non-Javadoc) (6/aHSXI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C_3,|Zq?|  
*/ 3` IR ^  
public void sort(int[] data) { ~NE`Ad.G  
int temp; 6 JI8l`S  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @ddCVxd  
if(data[j] SortUtil.swap(data,j,j-1); @D[+@N  
} &@xm< A\S  
} ?Xpk"N7  
} i~E0p ,  
} U;kN o3=  
fhn$~8[_A  
} aAqM)T83  
}#tbK 2[  
选择排序: dB~A4pZa  
H|e7IsY%  
package org.rut.util.algorithm.support; {|$kI`h,3-  
j0"4X  
import org.rut.util.algorithm.SortUtil; 3 }sy{Mx%9  
m2~`EL>  
/** LRw-I.z  
* @author treeroot kXdXyq  
* @since 2006-2-2 ,f%4xXI  
* @version 1.0 d_:f-  
*/ A;X3z-[[  
public class SelectionSort implements SortUtil.Sort { I] +OYWp  
Zk~Pq%u  
/* 6W:]'L4!  
* (non-Javadoc)  Hxy=J  
* qOmL\'8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h:7\S\|8  
*/ ;>/Mal  
public void sort(int[] data) { Gv]94$'J9  
int temp; <k3KCt  
for (int i = 0; i < data.length; i++) { >;"%Db  
int lowIndex = i; 5GPrZY"  
for (int j = data.length - 1; j > i; j--) { 6Ik v}q_j  
if (data[j] < data[lowIndex]) { 8B+C[Q:+'  
lowIndex = j; uEhPO  
} hKh ad8  
} 9s!R_R&W.  
SortUtil.swap(data,i,lowIndex); ;d fIzi  
} \PZ;y=]p}  
} ]N\D^`iQ  
K}N~KDW R|  
} G,+3(C  
D'%M#S0   
Shell排序: 'Sgz\ =K  
CXuMNa  
package org.rut.util.algorithm.support; 9]T61Z{OW1  
%jx<<hW  
import org.rut.util.algorithm.SortUtil; ci+a jON  
>`[+24e  
/** #zgO_ H  
* @author treeroot Mig l  
* @since 2006-2-2 -ert42fN  
* @version 1.0 ,+Ocb-*  
*/ `c ^ ">L  
public class ShellSort implements SortUtil.Sort{ [uJS. `b  
)x?)v#k  
/* (non-Javadoc) =/xx:D/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mm*nXJ  
*/ uwi.Sg11  
public void sort(int[] data) { 4Q1R:Ra  
for(int i=data.length/2;i>2;i/=2){ , ExY.'%1  
for(int j=0;j insertSort(data,j,i); ,*9gy$  
} zgGJ<=G.  
} YADXXQ"  
insertSort(data,0,1); xEq?[M  
} BbCW3!(  
 jrS$!cEo  
/** @o1#J` rv  
* @param data gw">xt5  
* @param j ;jQ^8 S  
* @param i Ps(oxj7  
*/ RkTYvAk|kY  
private void insertSort(int[] data, int start, int inc) { '"c`[L7Wn  
int temp; OaT]2o  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }fef*>>}  
} 5zZQt +Ip  
} "1>w\21  
} 'n"we# [  
0k_3]Li=(  
} {~#PM>f  
hpbi!g  
快速排序: WAtv4  
3A =\Mb  
package org.rut.util.algorithm.support; .h/2-pQ>  
owyQFk  
import org.rut.util.algorithm.SortUtil; lqO>Q1_{K  
A@Zqh<,Ud  
/** <Voct  
* @author treeroot WuI$   
* @since 2006-2-2 A5\ Hq  
* @version 1.0 xh#pw2v7V  
*/ p/l">d]+  
public class QuickSort implements SortUtil.Sort{ ?|_i"*]l  
WlW%z(RC  
/* (non-Javadoc) ~e)"!r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y]`o-dV  
*/ tnBCO%uG  
public void sort(int[] data) { Yne1MBK  
quickSort(data,0,data.length-1); ~gQYgv<7  
} VV 54$a  
private void quickSort(int[] data,int i,int j){ 9pr.`w  
int pivotIndex=(i+j)/2; f)Y~F/[$P  
file://swap :AQ9-&i/a-  
SortUtil.swap(data,pivotIndex,j); 3 _!MVT  
#Jp|Cb<qx  
int k=partition(data,i-1,j,data[j]); n{{"+;oR  
SortUtil.swap(data,k,j); r XBC M  
if((k-i)>1) quickSort(data,i,k-1); +M#}(hK  
if((j-k)>1) quickSort(data,k+1,j); A@:U|)+4  
Nq6; z)$  
} !&.-{ _$  
/** P1^|r}  
* @param data 3xdJ<Lrq  
* @param i 5eyB\>k,  
* @param j QUZ+#*:s  
* @return \hEIQjfi  
*/ z yp3 +|  
private int partition(int[] data, int l, int r,int pivot) { iweT @P`  
do{ A>mk0P)~Q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Akws I@@  
SortUtil.swap(data,l,r); k!bJ&} Q(b  
} -eD]gm  
while(l SortUtil.swap(data,l,r); }J-e:FUF#  
return l; SXE@\Afj  
} 8X278^ #  
~4twI*f  
} =[Z3]#h  
G;[O~N3n.  
改进后的快速排序: l,3,$  
R[* n3 wB  
package org.rut.util.algorithm.support; 5}! 36SO\  
r1}1lJ>7H  
import org.rut.util.algorithm.SortUtil; \Mdi eO*  
Eht8~"fj  
/** ][#|5UK8L  
* @author treeroot 9d( M%F  
* @since 2006-2-2 (J%>{?"ij  
* @version 1.0 6hcK%0z  
*/ Ro `Xs.X  
public class ImprovedQuickSort implements SortUtil.Sort { =1VZcLNt  
,&fZo9J9  
private static int MAX_STACK_SIZE=4096; i\DU<lD5VN  
private static int THRESHOLD=10; >#gDk K  
/* (non-Javadoc) \!w |  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zuFPG{^\#  
*/ =FiO{Aw`N  
public void sort(int[] data) { ^j10 f$B  
int[] stack=new int[MAX_STACK_SIZE]; >pJ#b=  
;kR=vv  
int top=-1; 3J/l>1[  
int pivot; ufw[Ei$I:  
int pivotIndex,l,r; s5Wb iOF  
F!4V!VWA}  
stack[++top]=0; (#)XRm{t  
stack[++top]=data.length-1; Y7I\<JG<  
0V^I.S/q  
while(top>0){ tTub W=H  
int j=stack[top--]; 2|WM?V&  
int i=stack[top--]; 59"tHb6E  
;KEie@Ry  
pivotIndex=(i+j)/2; 28c6~*Te #  
pivot=data[pivotIndex]; I36%oA  
O?"uM>r  
SortUtil.swap(data,pivotIndex,j); xD~r Q$6sI  
~Je40vO[  
file://partition .Y8P6_  
l=i-1; T{-gbo`Yji  
r=j; 1,]FLsuy  
do{ W!Hn`T   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bGy|T*@  
SortUtil.swap(data,l,r); @de0)AJG6  
} 9 HlWoHuC  
while(l SortUtil.swap(data,l,r); >El]5M7h7  
SortUtil.swap(data,l,j); dV}]\ 8N  
\1n (Jr.<  
if((l-i)>THRESHOLD){ nII#uI /!q  
stack[++top]=i; ]w$cqUhM  
stack[++top]=l-1; \d]Y#j<  
} $<&_9T#&w  
if((j-l)>THRESHOLD){ G%zJ4W%  
stack[++top]=l+1; UWK|_RT6SA  
stack[++top]=j; kCoE;)y$  
} ]%FP*YU4O  
q"DHMZB  
} dxH\H?NO  
file://new InsertSort().sort(data); x(4"!#  
insertSort(data); F+ RE  
} b35 3+7"|  
/** '=\>n(%Q  
* @param data utl-#Wwt/  
*/ #sg dMrVQ  
private void insertSort(int[] data) { +uTl Lu;MT  
int temp; )l! `k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >Bdh`Ot-!  
} Uq{$j5p8  
} @#-\ BQ;  
} ~Eb:AC5  
v<<ATs%w  
} _g( aO70Zu  
wi+L 4v  
归并排序: ~3Zz.!F  
nD]Mg T  
package org.rut.util.algorithm.support; ("}C& 6)cB  
h+&iWb3;  
import org.rut.util.algorithm.SortUtil; ;cPPx`0$9  
Y|J=72!]  
/** V8&'dhuG  
* @author treeroot Qb55q`'z  
* @since 2006-2-2 ~{-Ka>A  
* @version 1.0 . &`YlK  
*/ N`3^:EJL8  
public class MergeSort implements SortUtil.Sort{ 'jO8C2Th%  
G -K{  
/* (non-Javadoc) gu~R4 @3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,oSn<$%/q  
*/ P/^@t+KC  
public void sort(int[] data) { %6Vb1?x  
int[] temp=new int[data.length]; ;3xi.^=B  
mergeSort(data,temp,0,data.length-1); gy~2LY!}  
} `-R&4%t%  
v}D0t]  
private void mergeSort(int[] data,int[] temp,int l,int r){ .X"&k O>G  
int mid=(l+r)/2; I&gd"F _v}  
if(l==r) return ; b!Nr  
mergeSort(data,temp,l,mid); a~LdcUYs  
mergeSort(data,temp,mid+1,r); h(J$-SUs  
for(int i=l;i<=r;i++){ C&%NO;Ole  
temp=data; gyV`]uqG  
} }bdoJ5  
int i1=l; 9V&+xbR&  
int i2=mid+1; [wiB1{/Ls.  
for(int cur=l;cur<=r;cur++){ 6A|XB3  
if(i1==mid+1) yGrnzB6|  
data[cur]=temp[i2++]; 6gO(  8  
else if(i2>r) GO@<?>K  
data[cur]=temp[i1++]; ?*r%*CL  
else if(temp[i1] data[cur]=temp[i1++]; 'irwecd8  
else ` "-P g5  
data[cur]=temp[i2++]; 4GeN<9~YS  
} r$'.$k\  
} ]@Z nP,8  
&(l.jgqg&  
} 1ah,Zth2  
,Shzew+  
改进后的归并排序: wq!9wk9  
$sg-P|Wo  
package org.rut.util.algorithm.support; 5L~lF8  
,F` 1VpTd8  
import org.rut.util.algorithm.SortUtil; >.9V`m|  
&V SZ  
/** }R5EuR m\  
* @author treeroot `d4xX@  
* @since 2006-2-2 x _d   
* @version 1.0 I.|b:c xN  
*/ ;L#RFdh  
public class ImprovedMergeSort implements SortUtil.Sort { B]}gfVO  
&m[}%e%~0  
private static final int THRESHOLD = 10; !g}@xwWax  
-aE,KQ  
/* F9r/ M"5  
* (non-Javadoc) F$|:'#KN  
* jq8TfJ|   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8fBhX,1  
*/ #f_'&m  
public void sort(int[] data) { .d$Q5Qae  
int[] temp=new int[data.length]; '@w'(}3!3R  
mergeSort(data,temp,0,data.length-1); |8[!`T*s  
} 2J$vX(  
'+j;g  
private void mergeSort(int[] data, int[] temp, int l, int r) { llh +r?  
int i, j, k; u2$.EM/iae  
int mid = (l + r) / 2; uTPAf^|  
if (l == r) :pz@'J  
return; i O?f&u  
if ((mid - l) >= THRESHOLD) `,/5skeJ  
mergeSort(data, temp, l, mid); f\q5{#"z  
else I8B0@ZtV  
insertSort(data, l, mid - l + 1); G|-RscPe  
if ((r - mid) > THRESHOLD) _h,_HW)G  
mergeSort(data, temp, mid + 1, r); 3fXrwmBT8  
else 1q5S"=+W[  
insertSort(data, mid + 1, r - mid); Q8QB{*4  
vdB2T2F  
for (i = l; i <= mid; i++) { i^Jw`eAmT  
temp = data; F^%\AA]8  
} Fv$w:r]q6  
for (j = 1; j <= r - mid; j++) { m$(OQ,E  
temp[r - j + 1] = data[j + mid]; Mw-L?j0o[k  
} W?P4oKsql*  
int a = temp[l]; 4${3e Sg_  
int b = temp[r]; _5(p=Zc  
for (i = l, j = r, k = l; k <= r; k++) { "$K]+0ryG<  
if (a < b) { Z1+Ewq3m  
data[k] = temp[i++]; Lp@Al#X55  
a = temp; !TY0;is  
} else { *b 0z/ 6  
data[k] = temp[j--]; z j#<X  
b = temp[j]; V51kX{S  
} u;1[_~  
} _1Ne+"V  
} M2d&7>N  
$ve$Sq  
/** i[FYR;C  
* @param data tSoF!@6  
* @param l y:$qX*+9e  
* @param i 9,\AAISi  
*/ i;]# @n|  
private void insertSort(int[] data, int start, int len) { !Icznou\  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (Pw,3CbJ  
} )dEcKH<#  
} Otq1CD9  
} D8 PC;@m  
} L\c3D|  
I5g|)Y Q  
堆排序: B1E:P`t  
;!t?*  
package org.rut.util.algorithm.support; ^J^FGo|M  
QkD]9#Id&  
import org.rut.util.algorithm.SortUtil; *14:^neoI  
-O=xgvh"  
/** Y$c7uA:4  
* @author treeroot @]}/vsI m  
* @since 2006-2-2 _Ye.29  
* @version 1.0 c'Ibgfx%m  
*/ H]wP \m)  
public class HeapSort implements SortUtil.Sort{ T3SFG]H  
f O+lD  
/* (non-Javadoc) ?Ov~\[) F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T@#?{eA  
*/ 8 *{jxN'M  
public void sort(int[] data) { :)B1|1  
MaxHeap h=new MaxHeap(); }0@@_Y]CC  
h.init(data); s?->2gxhx  
for(int i=0;i h.remove(); Y+vIU*O  
System.arraycopy(h.queue,1,data,0,data.length); S# baOO  
} i`];xNR'  
O<,\ tZ'N  
private static class MaxHeap{ y\-iGKz{0  
Q!=`|X|:  
void init(int[] data){ EK0~ 3HSZ  
this.queue=new int[data.length+1]; 60A!Gob  
for(int i=0;i queue[++size]=data; 4t/?b  
fixUp(size); r%X M`;bQX  
} W7_m,{q  
} VnB HQ.C  
;XjXv'  
private int size=0; _!Tjb^  
<Uf`'X\e6  
private int[] queue; Cd]A1<6s  
a&)!zhVP  
public int get() { gE=9K @  
return queue[1]; wS&D-!8v  
} KECW~e`  
2P@6Qe ?  
public void remove() { >JY\h1+ H  
SortUtil.swap(queue,1,size--); \b!E"I_^  
fixDown(1); gn~^Ajo  
} %VR{<{3f  
file://fixdown ,1~zMzw^  
private void fixDown(int k) { VSV]6$~H  
int j; YPY,g R  
while ((j = k << 1) <= size) { ]$^HGmP  
if (j < size %26amp;%26amp; queue[j] j++; ME]89 T &  
if (queue[k]>queue[j]) file://不用交换 mQ`2c:Rn&7  
break; =ePX^J*M'  
SortUtil.swap(queue,j,k); N1.1  
k = j; Lz-|M?(  
} !hS)W7!ik  
} Y hmveV  
private void fixUp(int k) { WDV=]D/OE  
while (k > 1) { 6d/v%-3  
int j = k >> 1; +s;Vfc$b]H  
if (queue[j]>queue[k]) hmG8 {h/  
break; kz6fU\U  
SortUtil.swap(queue,j,k); 5ZH3}B^L$  
k = j; Y{#*;p*I  
} +( afO ~9  
} $9r4MMs{$  
L%{YLl-zf]  
} dw5"}-D  
)uR_d=B&  
} +c C. ZOS  
8JF<SQ  
SortUtil: ~!g2+^G7+P  
Jmg9|g!f  
package org.rut.util.algorithm; BYhiP/^  
x^pt^KR;  
import org.rut.util.algorithm.support.BubbleSort; #G`K<%{?f  
import org.rut.util.algorithm.support.HeapSort; 5VQ-D`kE+  
import org.rut.util.algorithm.support.ImprovedMergeSort; H8dS]N~[Y  
import org.rut.util.algorithm.support.ImprovedQuickSort; =2NrmwWZs  
import org.rut.util.algorithm.support.InsertSort; W+U0Y,N6  
import org.rut.util.algorithm.support.MergeSort; }gt)cOaY  
import org.rut.util.algorithm.support.QuickSort; g"m9[R=]6  
import org.rut.util.algorithm.support.SelectionSort; -U A &Zt  
import org.rut.util.algorithm.support.ShellSort; JXq!v:w6  
~jHuJ` ]DF  
/** N81M9#,["~  
* @author treeroot I^u~r.  
* @since 2006-2-2 Kr1Y3[iNv  
* @version 1.0 oz,.gP%  
*/ l Ib d9F  
public class SortUtil { !]D`|HoW  
public final static int INSERT = 1; UQ7]hX9  
public final static int BUBBLE = 2; In1n.oRFn^  
public final static int SELECTION = 3; -KfK~P3PF  
public final static int SHELL = 4; 4e AMb  
public final static int QUICK = 5; >b=."i  
public final static int IMPROVED_QUICK = 6; ONDO xXs  
public final static int MERGE = 7; h*!oHS~/l  
public final static int IMPROVED_MERGE = 8; >G%oWRk  
public final static int HEAP = 9; oJ3(7Sz  
+r;t]  
public static void sort(int[] data) { `zw%  
sort(data, IMPROVED_QUICK); CnZEBAU  
} 5$Kj#9g-#  
private static String[] name={ M<NY`7$^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6<QC|>p  
}; t6mv  
p[].4_B;  
private static Sort[] impl=new Sort[]{ }mIN)o  
new InsertSort(), &IzNoB  
new BubbleSort(), w3sU&  |N  
new SelectionSort(), j%w^8}U>G  
new ShellSort(), hAc|a9 o  
new QuickSort(), LW.j)wB]  
new ImprovedQuickSort(), \)o.Y zAo@  
new MergeSort(), (S+/e5c)  
new ImprovedMergeSort(), JR15y3 F  
new HeapSort() L]!![v.VY  
}; )1Y?S;  
lz<' L. .  
public static String toString(int algorithm){ 8Q)|8xpYS  
return name[algorithm-1]; w $-q&  
} bolG3Tf|  
9\WtcLx  
public static void sort(int[] data, int algorithm) { t1J3'lS  
impl[algorithm-1].sort(data); i\b^}m8c.N  
} 8Yf*vp>T/x  
(s&]V49  
public static interface Sort { OPjNmdeS  
public void sort(int[] data); DmPsE6G}  
} pOn&D  
hxM{}}.E  
public static void swap(int[] data, int i, int j) { "M[&4'OM  
int temp = data; zp}pS2DU  
data = data[j]; ]adgOlM  
data[j] = temp; ry=8Oq&[~  
} L*,h=#x(  
} H&p:  
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3+5=?,请输入中文答案:八 正确答案:八