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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。 E Zi&]  
插入排序: $!f !,fw+  
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package org.rut.util.algorithm.support; C,fY.CeI  
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import org.rut.util.algorithm.SortUtil; vm8$:W2 }  
/** !v0"$V5+i  
* @author treeroot `xCOR  
* @since 2006-2-2 7'z(~3D  
* @version 1.0 P>(&glr|  
*/ _BbvhWN&+  
public class InsertSort implements SortUtil.Sort{ Xh?4mKgu  
P$_&  
/* (non-Javadoc) K4:  $=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P1MvtI4gm  
*/ I7~|~<  
public void sort(int[] data) { vB.l0!c\e_  
int temp; [@//#}5v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zVw:7-  
} `{[RjM`  
} *7ZtNo[+  
} #.H}r6jqs  
ow/U   
} \8{\;L C  
V C-d0E0  
冒泡排序: =>qTNh*'  
A{N\)  
package org.rut.util.algorithm.support; eNbpwne  
2VA!&`I  
import org.rut.util.algorithm.SortUtil; 1fH<VgF`  
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/** /N6}*0Ru  
* @author treeroot Xd3}Vn=  
* @since 2006-2-2 $#e1SS32  
* @version 1.0 0]B(a  
*/ 8#w)X/  
public class BubbleSort implements SortUtil.Sort{ 7b,(\Fm  
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/* (non-Javadoc) _|A+ ) K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {]^O:i"  
*/ /,2rjJ#b  
public void sort(int[] data) { ;'0=T0\  
int temp; D/CIA8h3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .fp&MgiQ  
if(data[j] SortUtil.swap(data,j,j-1); 5pfYEofK[  
} H>XFz(LWh  
} y!~qbh[  
} Be2lMC  
} p $Hi[upy  
| &7S8Q  
} nls   
eVJ^\z:4  
选择排序: yz8jU*H  
ml0*1Dw  
package org.rut.util.algorithm.support; Z.1> kZ  
6@V~0DG  
import org.rut.util.algorithm.SortUtil; v7,$7@$:\  
6~xBi(m`  
/** Ls}7VKl'   
* @author treeroot qtMD CXZ^n  
* @since 2006-2-2 PyBD  
* @version 1.0 hr/o<#OW  
*/ r|eZv<6  
public class SelectionSort implements SortUtil.Sort { @kxel`,$e  
IeP WOpj3  
/* TB!(('  
* (non-Javadoc) T^:fn-S}=  
* 4CrLkr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p*20-!{A  
*/ sOpep  
public void sort(int[] data) { <%P2qgz5  
int temp; D +RiM~LH8  
for (int i = 0; i < data.length; i++) { xr%#dVk  
int lowIndex = i; Ln!A:dP}c-  
for (int j = data.length - 1; j > i; j--) { [9o4hw  
if (data[j] < data[lowIndex]) { G^;>8r  
lowIndex = j; 5T?-zFMM  
} fuMJdAuY7d  
} Pw[g  
SortUtil.swap(data,i,lowIndex); !)pdamdA  
} O9"/ kmB  
} k~.&j"K  
[{ ~TcT  
} 'e!J06  
; )Eo7?]-  
Shell排序: F_H82BE+3  
4(8xjL:  
package org.rut.util.algorithm.support; +&i +Mpb  
yZ kyC'/  
import org.rut.util.algorithm.SortUtil; S/tIwG ~e3  
Ig6T g ?  
/** :j^FJ@2_  
* @author treeroot x@KZ ]  
* @since 2006-2-2 i'#Gy,R  
* @version 1.0 4 %W:  
*/ )]htm&q5  
public class ShellSort implements SortUtil.Sort{ j)C:$  
XYr J/!*.  
/* (non-Javadoc) )"+2Z^1-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $?P22"/p  
*/ jE\Sm2G9  
public void sort(int[] data) { om h{0jA0  
for(int i=data.length/2;i>2;i/=2){ 7U|mu~$.!  
for(int j=0;j insertSort(data,j,i); n$n 7-7  
} r^,<(pbd  
} x[ 3A+  
insertSort(data,0,1); nh>K`+>co  
} \S~Vx!9w  
XB59Vm0E=  
/** o*rQP!8,oy  
* @param data x1&W^~  
* @param j 6CbxuzYer  
* @param i pmWr]G3,*  
*/ -E"GX  
private void insertSort(int[] data, int start, int inc) { /X'(3'a  
int temp; G 2!xPHz  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fw6UhG  
} /FP5`:PfL  
} Q[F}r`  
} ^ vilgg~  
 rl2&^N  
} :GpDg  
UMl#D >:C<  
快速排序: NKb1LbnZ*y  
\*f;Xaa  
package org.rut.util.algorithm.support; e [_m< e  
qMt++*Ls  
import org.rut.util.algorithm.SortUtil; R:Q0=PzDi#  
L2Pujk  
/** 9o*,P,j'}  
* @author treeroot 6(d}W2GP  
* @since 2006-2-2 Rp7ntI:  
* @version 1.0 rE9I>|tX  
*/ 5NoI~X=  
public class QuickSort implements SortUtil.Sort{ /zDi9W*~1  
}v:jncp  
/* (non-Javadoc) %wcSM~w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :+Om]#`Vls  
*/ :0 & X^]\  
public void sort(int[] data) { k@ZLg9  
quickSort(data,0,data.length-1); B33$pUk  
} 4lhw3,5  
private void quickSort(int[] data,int i,int j){ @Z>ZiU,^  
int pivotIndex=(i+j)/2; '52~$z#m  
file://swap w }Uhd ,  
SortUtil.swap(data,pivotIndex,j); o*U]v   
s*U1  
int k=partition(data,i-1,j,data[j]); $un?0S  
SortUtil.swap(data,k,j); `Qr%+OD  
if((k-i)>1) quickSort(data,i,k-1); 9$`lIy@B  
if((j-k)>1) quickSort(data,k+1,j); e@:sR  
_4^R9Bt  
} l2N]a9bq@  
/** iY"l}.7)  
* @param data \%^%wXfp  
* @param i ]BR,M4   
* @param j `;%]'F0`  
* @return sVG(N.y  
*/ ?T+q/lt4  
private int partition(int[] data, int l, int r,int pivot) { ZaNQpH.  
do{ U- )i+}Ng  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J{^RkGF  
SortUtil.swap(data,l,r); E4 m`  
} ,|&9M^  
while(l SortUtil.swap(data,l,r); ( =~&+z  
return l; Xd^\@  
} .{y uo{u  
]?*I9  
} B,,D7cQC  
qOIW(D  
改进后的快速排序: q.,JVGMS  
23 ~ Sjr  
package org.rut.util.algorithm.support; Aq3}Ng  
5^^XQ?"  
import org.rut.util.algorithm.SortUtil; 8\:NMP8W\  
p<M\U"5Ye  
/** Y>'|oygHA  
* @author treeroot cM&{+el  
* @since 2006-2-2 5mb]Q)f9-  
* @version 1.0 EkziAON  
*/ jH_JmYd  
public class ImprovedQuickSort implements SortUtil.Sort { BcI |:qv|  
zOQ>d|p?X  
private static int MAX_STACK_SIZE=4096; B^g ?=|{  
private static int THRESHOLD=10; h@a+NE8  
/* (non-Javadoc) (<^yqH?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w*R$o  
*/ 8By|@LO  
public void sort(int[] data) { eq U ME  
int[] stack=new int[MAX_STACK_SIZE]; h: 9Zt0,  
#8)*1?  
int top=-1; ;Iq/l%vX  
int pivot; l+V>]?j  
int pivotIndex,l,r; ~6p[El#tS  
J H7<  
stack[++top]=0; &RfC"lc  
stack[++top]=data.length-1; ocs+d\  
1dK*y'rx  
while(top>0){ -Z's@'*  
int j=stack[top--]; =Q\r?(Iy  
int i=stack[top--]; D*lKn62  
K5lmVF\$P  
pivotIndex=(i+j)/2; jYKor7KTqT  
pivot=data[pivotIndex]; Cg(Y&Gxf.  
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SortUtil.swap(data,pivotIndex,j); uC cYPvm  
U*) 8G  
file://partition -,U3fts  
l=i-1; aTt 12Sc  
r=j; '*3h!lW1.  
do{ o_~eg8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?nL.w  
SortUtil.swap(data,l,r); d@qsdYu-*  
} *6VF $/rP  
while(l SortUtil.swap(data,l,r); fZoHf\B]{  
SortUtil.swap(data,l,j); jbAx;Xt'=M  
OynXkH]0T+  
if((l-i)>THRESHOLD){ <[-nF"Q  
stack[++top]=i; pS:4CNI{  
stack[++top]=l-1; o,)?!{k}  
} <*qnY7c&N;  
if((j-l)>THRESHOLD){ #?S^kM-0  
stack[++top]=l+1; 6ZP"p<xX  
stack[++top]=j; Q637N|01  
} `G}TG(  
(=om,g}  
} _WRFsDZ'  
file://new InsertSort().sort(data); B\XKw'   
insertSort(data); xU4 +|d  
} z*!%g[3I  
/** X<I+&Zi  
* @param data ojan Bg   
*/ @"^0%/2-  
private void insertSort(int[] data) { o6uJyCO  
int temp; ~GZY5HF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ):[7E(F=  
} o{y9r{~A  
} :0Rx#%u}#  
} E4M@WNPx  
uo@n(>}EL  
} '2 PF  
fR(d  
归并排序: uc){+'[  
3R.W >U  
package org.rut.util.algorithm.support; U`2e{>'4t  
T[g[&K1Y  
import org.rut.util.algorithm.SortUtil; 5?]hd*8   
T9Nb`sbV]  
/** _I:/ZF5  
* @author treeroot A\HxDIU  
* @since 2006-2-2 `ojoOB^L  
* @version 1.0 u=`L )  
*/ \nPEyw,U  
public class MergeSort implements SortUtil.Sort{ ~Vr.J}]J  
)p<ExMIxd  
/* (non-Javadoc) ~?K~L~f5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0.8  2kl  
*/ }&w Ur>=  
public void sort(int[] data) { ^c9t'V`IWQ  
int[] temp=new int[data.length]; ewctkI$,5  
mergeSort(data,temp,0,data.length-1); +JjW_Rl?=V  
} n[lJLm^(_C  
^\4h<M  
private void mergeSort(int[] data,int[] temp,int l,int r){ {y=j?lD  
int mid=(l+r)/2; K/IWH[  
if(l==r) return ; wk5s)%V  
mergeSort(data,temp,l,mid); ^ hZ0IM  
mergeSort(data,temp,mid+1,r); W04@!_) <  
for(int i=l;i<=r;i++){ ahJ`$U4n  
temp=data; n>BkTaI  
} MkfBu W;)  
int i1=l; U:^PC x`  
int i2=mid+1; --$ 4Q(#  
for(int cur=l;cur<=r;cur++){ old(i:2  
if(i1==mid+1)  : y%d  
data[cur]=temp[i2++]; g/CSG IIT  
else if(i2>r) S[PE$tYT#t  
data[cur]=temp[i1++]; ,-8"R`UI8  
else if(temp[i1] data[cur]=temp[i1++]; DtXrWS/  
else VY |_d k  
data[cur]=temp[i2++]; t*Sa@$p  
} I ?gSG*m  
} (nf~x  
Z2qW\E^_r  
} /5(Yy}  
Azl&mu  
改进后的归并排序: PQ5QA61  
bDL,S?@  
package org.rut.util.algorithm.support; Enum/O5  
%4et&zRC  
import org.rut.util.algorithm.SortUtil; J^SdH&%Z  
a_f~N1kq  
/** cW@Zd5&0S  
* @author treeroot +ElfZ4  
* @since 2006-2-2 /Z'L^ L%R  
* @version 1.0 K|zZS%?$  
*/ 6jE |  
public class ImprovedMergeSort implements SortUtil.Sort { &Sw%<N*r  
HK,cJah q  
private static final int THRESHOLD = 10; }wr{W:j  
g{OwuAC_  
/* l;R%= P?'F  
* (non-Javadoc)  M+||rct  
* q&s3wDl/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,(d) Qg  
*/ Wbr|_W  
public void sort(int[] data) { !t$'AoVBq  
int[] temp=new int[data.length]; 2Rw&C6("w  
mergeSort(data,temp,0,data.length-1); sFT.Oxg<  
} \<JSkr[h!"  
yu!h<nfzA  
private void mergeSort(int[] data, int[] temp, int l, int r) { Ugu[|,  
int i, j, k; l{I6&^!KS  
int mid = (l + r) / 2; ($au:'kU  
if (l == r) x$5) ^ud?  
return; UO0{):w>  
if ((mid - l) >= THRESHOLD) iU$] {c2;A  
mergeSort(data, temp, l, mid); {.?ZHy\Rk  
else LClNxm2X  
insertSort(data, l, mid - l + 1); PRu 6xsyA  
if ((r - mid) > THRESHOLD) 5D\f8L  
mergeSort(data, temp, mid + 1, r); ?pr9f5  
else zi|+HM  
insertSort(data, mid + 1, r - mid); F U_jGwD  
`q}I"iS  
for (i = l; i <= mid; i++) { zMbN;tu  
temp = data; dgR g>)V  
} {MtpkUN  
for (j = 1; j <= r - mid; j++) { t3*wjQ3  
temp[r - j + 1] = data[j + mid]; =mS\i663  
} nKPYOY8^  
int a = temp[l]; s )noo  
int b = temp[r]; [~-9i &Z  
for (i = l, j = r, k = l; k <= r; k++) { q)LMm7  
if (a < b) { :o0JY= 5  
data[k] = temp[i++]; ;&< {ey  
a = temp; "?]{ %-u  
} else { fkuLj%R  
data[k] = temp[j--]; ii[F]sR\  
b = temp[j]; qkt0**\  
} = s>T;|  
} Vq2y4D?  
} &+Z,hs9%  
!\zWF  
/** jN{Xfjmfv  
* @param data sD{Wxv  
* @param l EN$2,qf  
* @param i K-bD<X  
*/ *W.C7=  
private void insertSort(int[] data, int start, int len) { <;vbsksZeH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >zw.GwN|  
} q*U*Fu+  
} $Z.7zH  
} @Z*W  
} Dd'm U  
pWy=W&0~qf  
堆排序: YLqGRE`W  
$bW3_rl%X  
package org.rut.util.algorithm.support;  f\]sz?KY  
_,p/l&<  
import org.rut.util.algorithm.SortUtil; $+P>~X)  
?oVx2LdD|  
/** S=5<^o^h3  
* @author treeroot OVm\  
* @since 2006-2-2 X &uTSgN  
* @version 1.0 AJh w  
*/ 1n=lqn/  
public class HeapSort implements SortUtil.Sort{ &~8oQC-eF  
N >FKy'.gk  
/* (non-Javadoc) uD\?(LM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <v)1<*I  
*/ DK$X2B"cV  
public void sort(int[] data) { JLnH&(O  
MaxHeap h=new MaxHeap(); RHmgD;7`  
h.init(data); >"|B9Woc  
for(int i=0;i h.remove(); %SX|o-B~.o  
System.arraycopy(h.queue,1,data,0,data.length); iX0i2ek  
} \]</w5 Pi,  
f$+,HB  
private static class MaxHeap{ 9{RB{<Se!  
}p}[j t  
void init(int[] data){ }=%oX}[  
this.queue=new int[data.length+1]; ?{/4b:ua  
for(int i=0;i queue[++size]=data; / : L?~  
fixUp(size); #yI mKEYX  
} k9k XyX[  
} p2ogn}`  
LCZ\4g05  
private int size=0; &|Bc7+/P  
_y),J'W^3u  
private int[] queue; tz5e"+Tz  
W=j[V Oq  
public int get() { Cbg!:Cws  
return queue[1]; FKIw!m ~  
} ZIf  
5* j?E  
public void remove() { /I1h2 E  
SortUtil.swap(queue,1,size--); 0rOfrTNOz%  
fixDown(1); )k\H@Dy%$  
} +1uF !G&l  
file://fixdown XlV0*}S  
private void fixDown(int k) { U7K,AflK?M  
int j; m+b):  
while ((j = k << 1) <= size) { ?%O(mC]u&  
if (j < size %26amp;%26amp; queue[j] j++; syWG'( >  
if (queue[k]>queue[j]) file://不用交换 O #F   
break; 6hlc1?  
SortUtil.swap(queue,j,k); 5 xppKt  
k = j; 6N",- c  
} 43|XSyS  
} 4[.oPK=i  
private void fixUp(int k) { 4[;X{ !  
while (k > 1) { F<L EQ7T  
int j = k >> 1; :e_V7t)o  
if (queue[j]>queue[k]) d@ i}-;  
break; ?\vh9  
SortUtil.swap(queue,j,k); 'm4W}F  
k = j; )Hpa}FGT  
} B P2=2)Q  
} Ka[t75~;  
QIB\AAclO  
} uehDIl0\[b  
I/&%]"[^u  
} E8pB;\Z(  
Gcdd3W`O  
SortUtil: "/3 db[  
v K9E   
package org.rut.util.algorithm; ] Bcp;D  
ePr&!Tz#  
import org.rut.util.algorithm.support.BubbleSort; GO__$%~  
import org.rut.util.algorithm.support.HeapSort; 55tKTpV  
import org.rut.util.algorithm.support.ImprovedMergeSort; v*;-yG&  
import org.rut.util.algorithm.support.ImprovedQuickSort; ex::m&  
import org.rut.util.algorithm.support.InsertSort; ]b\yg2  
import org.rut.util.algorithm.support.MergeSort; 23c 8  
import org.rut.util.algorithm.support.QuickSort; M[mF8Zf  
import org.rut.util.algorithm.support.SelectionSort; %e-7ubW  
import org.rut.util.algorithm.support.ShellSort; zb k q   
uW30ep'  
/** .$qnZWcgG  
* @author treeroot <R''oEf9  
* @since 2006-2-2 F$ #U5}Q  
* @version 1.0 1`(tf6op  
*/ p^Ak1qm~e  
public class SortUtil { jFASX2.p  
public final static int INSERT = 1; S<VSn}vn  
public final static int BUBBLE = 2; <J`0mVOX  
public final static int SELECTION = 3;  1Md  
public final static int SHELL = 4; ^su<uG<R  
public final static int QUICK = 5; jzDuE{  
public final static int IMPROVED_QUICK = 6; d Vj_8>  
public final static int MERGE = 7; z2g3FUTX)b  
public final static int IMPROVED_MERGE = 8; VKq=7^W  
public final static int HEAP = 9; :pGaFWkvO  
4Uphfzv3D  
public static void sort(int[] data) { o=50>$5jlS  
sort(data, IMPROVED_QUICK); 7s/u(~d)  
} .@(6Y<dN  
private static String[] name={ H,DM1Z9rz  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" g]4(g<:O  
}; qAn!RkA  
Ov-icDMm  
private static Sort[] impl=new Sort[]{ OW3sS+y  
new InsertSort(), w2 a1mU/  
new BubbleSort(), \HKxh:F'  
new SelectionSort(), YL]Z<%aKt  
new ShellSort(), |G?htZF  
new QuickSort(), vRs,zL$W  
new ImprovedQuickSort(), TygW0b 1  
new MergeSort(), K('hC)1  
new ImprovedMergeSort(), 7J EbH?lEN  
new HeapSort() E^vJ@O  
}; \#Pfj &*  
)Xv ilCk1  
public static String toString(int algorithm){ )L#i%)+  
return name[algorithm-1]; ~yH?=:>U  
} swM*k;$q{  
q(`/Vo4g(  
public static void sort(int[] data, int algorithm) { rEB @$C^  
impl[algorithm-1].sort(data); P(+&OoY2  
} RloK,bg  
n?- })  
public static interface Sort { {so `/EWa  
public void sort(int[] data); &Xf^Iu  
} 3BtaH#ZY  
bn!HUM,  
public static void swap(int[] data, int i, int j) { l|kSsP:GO  
int temp = data; FFu9&8Y  
data = data[j]; ,.kha8v  
data[j] = temp; {]:7bV#JP  
} U)E(`{p]  
} >8k _n  
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