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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。 b*nyt F  
插入排序: ,M>W)TSH  
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package org.rut.util.algorithm.support; "@gJ[BL#  
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import org.rut.util.algorithm.SortUtil; hAOXOj1  
/** V(L~t=k$  
* @author treeroot k!xi (l<C  
* @since 2006-2-2 zek\AQN  
* @version 1.0 ,4NvD2Y  
*/ OZbwquF@  
public class InsertSort implements SortUtil.Sort{  elWN-~  
6[69|&  
/* (non-Javadoc) enF.}fo]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z"lL=0rY/  
*/ hEl)BRJ  
public void sort(int[] data) { ?fXg_?+{'g  
int temp; .!U `,)I  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $sU?VA'h  
} =P'=P0G  
} gET& +M   
} !__f  
9*[!uu  
} 3HO 4 h\mp  
DA]!ndJD  
冒泡排序: K^J;iu4  
RT9fp(6*  
package org.rut.util.algorithm.support; j*I0]!-  
J6hWcA6 g  
import org.rut.util.algorithm.SortUtil; ]gI XG`  
, ZD!Qb  
/** Sj+ gf~~  
* @author treeroot yZb@  
* @since 2006-2-2 RL~\/#  
* @version 1.0 #Jy+:|jJ  
*/ L FHyiIO  
public class BubbleSort implements SortUtil.Sort{ |O+R%'z'<  
"3Dvc7V  
/* (non-Javadoc) VDPqI+z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k5w+{iOh  
*/ ? Q.Y  
public void sort(int[] data) { CLQ\Is^]  
int temp; zO2<Igb  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %p/Qz|W  
if(data[j] SortUtil.swap(data,j,j-1); bsr  
} ppR_y  
} r4J4|&ym  
} 3 V8SKBS  
} Uk S86`.  
oMLpl3pl  
} 01H3@0Q6  
csRba;Z[  
选择排序: PaMi5Pq  
WN>.+qM~8  
package org.rut.util.algorithm.support; (Uv{%q.n6  
+O j28vR  
import org.rut.util.algorithm.SortUtil; xO/44D  
5iG|C ~  
/** 0K7-i+\#  
* @author treeroot h6)hZ'zV  
* @since 2006-2-2 qlPjz*<h"H  
* @version 1.0 ^[&*B#(  
*/ 6du"^g  
public class SelectionSort implements SortUtil.Sort { #@2`^1  
}=?r`J+Ev;  
/* /J/r62  
* (non-Javadoc) HZ[&ZNTa  
* %- %/3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9rn!U2  
*/ @F=ZGmq  
public void sort(int[] data) { _=U XNr8S  
int temp; EIEwrC  
for (int i = 0; i < data.length; i++) { )lB-D;3[_  
int lowIndex = i; L nw+o}  
for (int j = data.length - 1; j > i; j--) { D Sd 5?  
if (data[j] < data[lowIndex]) { 5w}xjOYIjV  
lowIndex = j; -|J?-  
} :eHh }  
} \M:,Vg  
SortUtil.swap(data,i,lowIndex); rvw1'y  
} m"86O:S#d  
} J#Bz )WmR  
GZI[qKDfB  
} YlPZa3\  
? Z1pPd@  
Shell排序: q/Q^\HTk  
tSYeZ~  
package org.rut.util.algorithm.support; d@C ;rzR  
ZJy D/9y  
import org.rut.util.algorithm.SortUtil; _qE2r^o"B  
uBl&|yvxB  
/** b.YQN'  
* @author treeroot tHJ1MDw'  
* @since 2006-2-2 ot_jG)  
* @version 1.0 Qksw+ZjY#{  
*/ ;1(OC-2>d  
public class ShellSort implements SortUtil.Sort{ 8y|(]5 'r  
fQOaTsyA  
/* (non-Javadoc) %6Hn1'7+v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JC>}(yQA  
*/ 1;? L:A  
public void sort(int[] data) { I*K^,XY+  
for(int i=data.length/2;i>2;i/=2){ r)+dK }xl  
for(int j=0;j insertSort(data,j,i); pC5-,Z;8  
} `q$DNOrS  
} eHqf3f   
insertSort(data,0,1); yQou8P=%  
} cv#H  
JN|<R%hy  
/** <6v7_  
* @param data B-@f.NO/s  
* @param j <@JU0Z"a=  
* @param i Ta9;;B?$  
*/ *D4H;P#  
private void insertSort(int[] data, int start, int inc) { I62Yg p$K  
int temp; P-+^YN,  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;R 2(Gb  
} C$,S#n@  
} Yd/qcC(&  
} {W `/KU?u  
:^l*_v{  
} 2$T~(tem  
R L)'m  
快速排序: ) }?dYk  
qIb(uF@l"  
package org.rut.util.algorithm.support; laFkOQI  
M~"]h:m&'v  
import org.rut.util.algorithm.SortUtil; hrS/3c'<Z  
dW:  
/** r9*{)"  
* @author treeroot 0n(Q@O  
* @since 2006-2-2 &1w,;45  
* @version 1.0 0&5}[9?V'  
*/ Or_9KX2  
public class QuickSort implements SortUtil.Sort{ {/n$Y|TIQt  
i>!f|<  
/* (non-Javadoc) R^PQ`$W 'R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NiyAAw  
*/ _10#rucr  
public void sort(int[] data) { @XmMD6{<  
quickSort(data,0,data.length-1); ?.4.Ubc\  
} 7[u&%  
private void quickSort(int[] data,int i,int j){ x;b'y4kH  
int pivotIndex=(i+j)/2; sjaG%f&h  
file://swap \u)s Zh  
SortUtil.swap(data,pivotIndex,j); ` -w;=_Bm  
c=@=lGgo  
int k=partition(data,i-1,j,data[j]); Z.h`yRhO  
SortUtil.swap(data,k,j); r@ejU'uz  
if((k-i)>1) quickSort(data,i,k-1); Aq";z.gi+  
if((j-k)>1) quickSort(data,k+1,j); :+-s7'!4  
mtTJm4  
} jkD5Z`D  
/** g|nPr)<  
* @param data 6fkL@It  
* @param i `8'|g8,wb0  
* @param j r*tGT_/6  
* @return 2t(E+^~  
*/ ):.]4n{L  
private int partition(int[] data, int l, int r,int pivot) { D ORFK  
do{ g$]9xn#_[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); VF[]E0=u6  
SortUtil.swap(data,l,r); !PQ@"L)p  
} BF]b\/I  
while(l SortUtil.swap(data,l,r); DtZkrj)D/  
return l; A#8/:t1AW  
} 'etCIl3  
TcGxm7T  
} Zu+Z7@$}/  
9I pjY~or  
改进后的快速排序: +VU,U`W  
T1e}WJbFE  
package org.rut.util.algorithm.support; QTP1u  
<X;y 4lPZ  
import org.rut.util.algorithm.SortUtil; u}ab[$Q5  
X59~)rH,  
/** X1" `0r3  
* @author treeroot x$A5Ved  
* @since 2006-2-2 YSZz4?9\  
* @version 1.0 Ymn0?$,D1=  
*/ 8ALYih7"W  
public class ImprovedQuickSort implements SortUtil.Sort { *_^AK=i  
nQ/El&{  
private static int MAX_STACK_SIZE=4096; o#6j+fo!n  
private static int THRESHOLD=10; `qr[0wM  
/* (non-Javadoc) dc:|)bK M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8{h:z 9]J  
*/ y~W6DL}  
public void sort(int[] data) { \hm=AGI0  
int[] stack=new int[MAX_STACK_SIZE]; ?MN?.O9-  
Bj\0RmVa1  
int top=-1; %tpt+N?  
int pivot; K_}vmB\2l  
int pivotIndex,l,r; %=_ Iq\lC  
 ,?`$ ~8  
stack[++top]=0; .CmwR$u&  
stack[++top]=data.length-1; _#-(XQa  
?)JW}3<.  
while(top>0){ .@xwl}o$OL  
int j=stack[top--]; Zcf?4{Kd?  
int i=stack[top--]; XmXHs4  
y]@_DL#J=  
pivotIndex=(i+j)/2; 9]d$G$Kv9  
pivot=data[pivotIndex]; Kk#8r+ ,  
WE=`8`Li  
SortUtil.swap(data,pivotIndex,j); RAxA H  
+]I7)  
file://partition Y&+<'FA  
l=i-1; C' ny 2>uA  
r=j; R%b,RH#  
do{ i12iB+q  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #t{?WkO[  
SortUtil.swap(data,l,r); Q=>@:1=  
} s%p(_pB  
while(l SortUtil.swap(data,l,r); JQ0KXS Nr  
SortUtil.swap(data,l,j); YK_a37E{F  
LQR9S/?Ld  
if((l-i)>THRESHOLD){ p+yU!Qj  
stack[++top]=i; dGHRHXi  
stack[++top]=l-1; YSeXCJ:Iy  
} 8)M . W  
if((j-l)>THRESHOLD){ )5e}Id  
stack[++top]=l+1; T!J\Dm-  
stack[++top]=j; c\-I+lMBi  
} N/^r9Nu  
)Ax1?Nx$  
} }`*]&I[P  
file://new InsertSort().sort(data); l-M~e]  
insertSort(data); K b{  
} L2Mcs  
/** Xhi9\wteYw  
* @param data ( R Ttz  
*/ {n |Ra[9_  
private void insertSort(int[] data) { ^oPf>\),C  
int temp; ~|fd=E%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g.&&=T  
} 0M:.Jhp  
} jh}[7M  
} 'w!Hjq]$  
O/0m|~`iY  
} g$$uf[A-SL  
t;ggc{  
归并排序: VNA VdP  
1C'lT,twl  
package org.rut.util.algorithm.support; hPhN7E03  
7GE.>h5  
import org.rut.util.algorithm.SortUtil; a^~l[HSF  
,mjwQ6:Ny  
/** "r.pU(uxt  
* @author treeroot xS*f{5Hr8  
* @since 2006-2-2 Ugrcy7  
* @version 1.0 FFP>Y*v(  
*/ ~` #t?1SP  
public class MergeSort implements SortUtil.Sort{ pbju;h)O!|  
y{5ZC~Z<!  
/* (non-Javadoc) E!jM&\Zj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?][Mv`ST  
*/ |A}E/=HPU  
public void sort(int[] data) { pSc<3OI  
int[] temp=new int[data.length]; vek9. 4! ]  
mergeSort(data,temp,0,data.length-1); >fQ-( io  
} (?)".Q0  
&Zq43~  
private void mergeSort(int[] data,int[] temp,int l,int r){ P ,5P6Y9  
int mid=(l+r)/2; S'2B  
if(l==r) return ; ~#@sZ0/<  
mergeSort(data,temp,l,mid); _s<eqCBV  
mergeSort(data,temp,mid+1,r); |=,V,*"  
for(int i=l;i<=r;i++){ v0\2%PC  
temp=data; 36.L1!d)pE  
} =U3 !D;XP  
int i1=l; " c}pY^(  
int i2=mid+1; %6dFACv  
for(int cur=l;cur<=r;cur++){ ; l+3l ez  
if(i1==mid+1) c7P"1  
data[cur]=temp[i2++]; [%z~0\lu8  
else if(i2>r) P\N$TYeH  
data[cur]=temp[i1++]; tAc[r)xFw  
else if(temp[i1] data[cur]=temp[i1++]; ZuILDevMD  
else C$ nT&06o  
data[cur]=temp[i2++]; F8>Fp"  
} j$Gb> Ex>  
} MS><7lk-  
VO[s:e9L  
} 3*XX@>|o  
qdNYY&6>?u  
改进后的归并排序: (fb&5=Wzw  
C6:<.`iD87  
package org.rut.util.algorithm.support; 4vGkgH<,  
WE68a!6  
import org.rut.util.algorithm.SortUtil; 9`QWqu[  
OB l-6W  
/** H2|&  
* @author treeroot Y0aO/6  
* @since 2006-2-2 l`fjz-eE  
* @version 1.0 h#'(UZ  
*/ 1}B W   
public class ImprovedMergeSort implements SortUtil.Sort { F;5.nKo  
} 3 RqaIY}  
private static final int THRESHOLD = 10; %/-Z1Nv*#  
>*B/Wy  
/* }4  5|  
* (non-Javadoc) lLyMm8E%pZ  
* doVBVTk^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~z%K9YcyU  
*/ IWsB$T  
public void sort(int[] data) { %Mz(G-I.\  
int[] temp=new int[data.length]; `A$yF38!  
mergeSort(data,temp,0,data.length-1); dX,2cK[aG  
} ub0]nov  
$kvF]|<bu  
private void mergeSort(int[] data, int[] temp, int l, int r) { Vb|DNl@  
int i, j, k; ld$LG6[PA  
int mid = (l + r) / 2; a~DR$^m  
if (l == r) N-4LdC  
return; uXNJ{]o  
if ((mid - l) >= THRESHOLD) 0;} 9XZ  
mergeSort(data, temp, l, mid); tWdj"n%  
else Vv0dBFe  
insertSort(data, l, mid - l + 1); _(TavL>l =  
if ((r - mid) > THRESHOLD) 2< w/GX.  
mergeSort(data, temp, mid + 1, r); T/dchWG  
else f[!N]*  
insertSort(data, mid + 1, r - mid); & tkkn2t  
Z"] ben  
for (i = l; i <= mid; i++) { WDW b 7  
temp = data; j'#W)dp(  
} 9)3ok#pQ/  
for (j = 1; j <= r - mid; j++) { ;WO/xA-#  
temp[r - j + 1] = data[j + mid]; )CYSU(YTD  
} rwv_ RN  
int a = temp[l]; 2.Th29]  
int b = temp[r]; tB8XnO_c  
for (i = l, j = r, k = l; k <= r; k++) { K q: +{'  
if (a < b) { }<9*eAn`  
data[k] = temp[i++]; t8E'd :pE  
a = temp; 6 80i?=z  
} else { `6?r.;wj  
data[k] = temp[j--]; n$F&gx'^  
b = temp[j]; '9H7I! L@  
} \[% [`m  
} /}]X3ng  
} Qj VP]C}p  
@;"HslU\Q  
/** O}*[@uv/  
* @param data xT#j-T  
* @param l %j^[%&pT  
* @param i @G~T&6E!  
*/ .3Jggp  
private void insertSort(int[] data, int start, int len) { wk<QYLEk  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); dNB56E)5`J  
} JGHQ_AI  
}  M#IGq  
} zQV$!%qR  
} *.8@ hPy  
/g< T)$2  
堆排序: ]<WKi=  
[mYmrLs6  
package org.rut.util.algorithm.support; W+Z] Y  
.fk!~8b[Q+  
import org.rut.util.algorithm.SortUtil; Ha)eeE$  
bu1O<*  
/** MR:Co4(  
* @author treeroot 9mIq9rQ|*  
* @since 2006-2-2 w3a`G|  
* @version 1.0 w[qWr@  
*/ hvnZ 2x.?d  
public class HeapSort implements SortUtil.Sort{ RM|<(kq  
>t.2!Z_RQ  
/* (non-Javadoc) ~raRIh=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ygW,4Vz7J  
*/ Mmq{]q~At  
public void sort(int[] data) { Ie`kzssM  
MaxHeap h=new MaxHeap(); 3gQQ,V..  
h.init(data); _8)9I?jH  
for(int i=0;i h.remove(); P#Z$+&)b)s  
System.arraycopy(h.queue,1,data,0,data.length); lBvQ?CJ<y  
} .ZJt  
sF :3|Yy0  
private static class MaxHeap{ ZX sm9  
x\)0+c~\}x  
void init(int[] data){ KA# 4iu{  
this.queue=new int[data.length+1]; M~t S *  
for(int i=0;i queue[++size]=data; B<T wTv  
fixUp(size); O%AQ'['  
} 3b (I~  
} 79AOvh  
M\BLuD  
private int size=0; hR Y *WL  
>j{phZ  
private int[] queue; DB-4S-2  
$5z O=`  
public int get() { x>8=CiUE  
return queue[1]; 9He>F7J:p'  
} .h-:) e*  
 )f>s\T  
public void remove() { zjs@7LN  
SortUtil.swap(queue,1,size--); Ev|2bk \  
fixDown(1); mWZoo/xtT  
} Fyrr,#  
file://fixdown +e. bO5Y  
private void fixDown(int k) { _fz-fG 1  
int j; M$dDExd~  
while ((j = k << 1) <= size) { v4kk4}lE  
if (j < size %26amp;%26amp; queue[j] j++; r3<yG"J86  
if (queue[k]>queue[j]) file://不用交换 *IJctYJaX  
break; <\|f;7/  
SortUtil.swap(queue,j,k); ZY-W~p1:G  
k = j; ,~w)~fMb8  
} x3xBl_t  
}  s de|t  
private void fixUp(int k) { O:"gJ4D  
while (k > 1) { ;]34l."85  
int j = k >> 1; &ok2Xw  
if (queue[j]>queue[k]) a*o#,T5A  
break; }@_F( B  
SortUtil.swap(queue,j,k); Ouc=4'$-  
k = j; EtK,C~C}8  
} W! v8'T  
} H.qp~-n  
=ltT6of@o  
} ]e@'9`G-'  
P(8zJk6h),  
} %,Xs[[?i  
N%'=el4L  
SortUtil: *aT3L#0(  
3#}5dO  
package org.rut.util.algorithm; ?u{y[pI6  
 ~,Ck  
import org.rut.util.algorithm.support.BubbleSort; Ho9 a#9  
import org.rut.util.algorithm.support.HeapSort; X!V@jo9?  
import org.rut.util.algorithm.support.ImprovedMergeSort; SxcNr5F   
import org.rut.util.algorithm.support.ImprovedQuickSort; n,SDJsS^  
import org.rut.util.algorithm.support.InsertSort; JL45!+  
import org.rut.util.algorithm.support.MergeSort; (dvCejc^p  
import org.rut.util.algorithm.support.QuickSort; "l6v[yv  
import org.rut.util.algorithm.support.SelectionSort; xG@zy4  
import org.rut.util.algorithm.support.ShellSort; [vV]lWOp'  
C vfm ,BL  
/** dp\pkx7  
* @author treeroot M^DYzJ  
* @since 2006-2-2 =t\HtAXn[  
* @version 1.0 $q);xs  
*/ +K,]#$k  
public class SortUtil { xH#R_  
public final static int INSERT = 1; u snbGkq  
public final static int BUBBLE = 2; IF YGl  
public final static int SELECTION = 3; G]X72R?g  
public final static int SHELL = 4; QL%&b\K  
public final static int QUICK = 5; &$ZJfHD@  
public final static int IMPROVED_QUICK = 6; ,E2Tw-%  
public final static int MERGE = 7; ORHs1/L`j  
public final static int IMPROVED_MERGE = 8; yPL1(i;  
public final static int HEAP = 9; DS0c0lsx  
BR*,E~%  
public static void sort(int[] data) { Z;`ts/?SY]  
sort(data, IMPROVED_QUICK); eD5.*O  
} {0 d/;  
private static String[] name={ cl:h 'aG  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .I_Mmaq;i  
}; *P]FX-D3  
|{]W (/  
private static Sort[] impl=new Sort[]{ `2Rd=M]?  
new InsertSort(), U<QO@5  
new BubbleSort(), U0G(  
new SelectionSort(), (+lw t  
new ShellSort(), qKag'0e  
new QuickSort(), >J,Rx!fq3  
new ImprovedQuickSort(), ")LcB' C  
new MergeSort(), RGvfy/T  
new ImprovedMergeSort(), [Zc8tE2oN  
new HeapSort() U[1Rw6  
}; Ze_4MwC W  
w'E&w)Z]  
public static String toString(int algorithm){ S)ZcH  
return name[algorithm-1]; h3U| ~h  
} Ry9kGdqO  
CmKbpN*  
public static void sort(int[] data, int algorithm) { |X@ZM  
impl[algorithm-1].sort(data); LPO:K a  
} ZqH.$nXP  
f*U3s N^y  
public static interface Sort { %>u (UmFO  
public void sort(int[] data); o|FjNL  
} U7i WYdt$  
Hz39v44  
public static void swap(int[] data, int i, int j) { AlF"1X02  
int temp = data; Q |,(C0<G  
data = data[j]; =wbgZr^2  
data[j] = temp; 8>Az<EF^=#  
} P]w5`aBM  
} "X<vgM^:  
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