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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。 UABbcNW  
插入排序: B5`;MQJ  
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package org.rut.util.algorithm.support; WZK :.y  
}`]]b+_b>@  
import org.rut.util.algorithm.SortUtil; #Fzb8Yo  
/** 1eiw3WU;  
* @author treeroot - 0DZ::  
* @since 2006-2-2 FG# nap{  
* @version 1.0 vJThU$s-  
*/ vZk9gGjk  
public class InsertSort implements SortUtil.Sort{ `^e*T'UPl  
bd{\{[^S!  
/* (non-Javadoc) K?YEoz'y[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {aIZFe}B  
*/ dEET}s\  
public void sort(int[] data) { R@$+t:}  
int temp; k =|K|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); AY;<q$8j%,  
} zq=&4afOE  
} DKHM\yt  
} U' M|=I'  
Bac|;+L~L  
} T 9MzUV&  
UM\}aq=,  
冒泡排序: #JFYws  
Gh iHA9.  
package org.rut.util.algorithm.support; nX 8B;*p6b  
g]4y AV<2  
import org.rut.util.algorithm.SortUtil; M:(&n@e  
)f[C[Rd  
/** %mL5+d-oP  
* @author treeroot ;-Ado8  
* @since 2006-2-2 `u=oeM :  
* @version 1.0 5"uNj<.V  
*/ y($EK(cb  
public class BubbleSort implements SortUtil.Sort{ 3P`WPph  
f}blB?e  
/* (non-Javadoc) wt\m+!u`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tNB%eb{  
*/ Y{j7Q4{  
public void sort(int[] data) { <(?' s9  
int temp; oN ;-M-(  
for(int i=0;i for(int j=data.length-1;j>i;j--){ pU@YiwP"]x  
if(data[j] SortUtil.swap(data,j,j-1); L6x B`E9  
} AoU_;B\b%  
} S*s:4uf  
} J@gm@ jLc  
} "u5KbJW  
$E@ouX?  
} jJ<;2e~OW  
(gD Q\t@3-  
选择排序: ;t~*F#p(!  
[9J:bD  
package org.rut.util.algorithm.support; r;'i<t{P  
6"%@ L{UQ  
import org.rut.util.algorithm.SortUtil; Z,SY N?@  
(H2ylMpQt  
/** GI?PGAT  
* @author treeroot Eo Ko   
* @since 2006-2-2 LS{bg.e  
* @version 1.0 0W_mCV  
*/ BPh".RJ  
public class SelectionSort implements SortUtil.Sort { $8Ig&k|~8  
 d~sJ=)  
/* M6&~LI.We=  
* (non-Javadoc) T:6K?$y?  
* P*7S3Td  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dB@FI  
*/ X0!Bs-WFp  
public void sort(int[] data) { Enu!u~1]F  
int temp; 'H!V54 \j  
for (int i = 0; i < data.length; i++) { TqXg e{r  
int lowIndex = i; D/cg7  
for (int j = data.length - 1; j > i; j--) { *h:D|4oJ(  
if (data[j] < data[lowIndex]) { ^glX1 )  
lowIndex = j; OgQntj:%lN  
} 9lKRL'QR  
} ;*nh=w  
SortUtil.swap(data,i,lowIndex); "% SX@  
}  w"BIv9N  
} t@6w$5:}  
*.:!Ax  
} 1y 1_6TZ+  
Q7L)f71i  
Shell排序: */4tJ G1U  
}'PG!+=I  
package org.rut.util.algorithm.support; <r_3obRC  
p%tE v  
import org.rut.util.algorithm.SortUtil; r1+c/;TpZ  
9uKOR7.zbo  
/** D/e&7^iK  
* @author treeroot iQu^|,tHEM  
* @since 2006-2-2 |^ ?`Q.|c$  
* @version 1.0 <>VID E  
*/ Qg[heND  
public class ShellSort implements SortUtil.Sort{ ?vMK'"  
/q T E  
/* (non-Javadoc) xC'mPcU8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )y(oHRCp->  
*/ 6={IMkmA  
public void sort(int[] data) { u2 Y N[|V  
for(int i=data.length/2;i>2;i/=2){ re]%f"v:5  
for(int j=0;j insertSort(data,j,i); Ndo}Tk!  
} J_|7$ l/  
} 4C6=77Jr  
insertSort(data,0,1); =Y/}b\9`T  
} q)NXyy4BT  
DQ%`v =  
/** c!.=%QY  
* @param data 0h^uOA; c  
* @param j vf6`s\6  
* @param i 5QKRI)XpZ  
*/ dJloH)uJZ>  
private void insertSort(int[] data, int start, int inc) { 0 4P.p6  
int temp;  c^rC8E  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *U :VM'a  
} GahaZ F  
} oN_S}o  
} #,t2*tM  
P`7ojXy  
} uijq@yo8-  
/g13X,.H  
快速排序: n'q aR<bY  
$I\))*a  
package org.rut.util.algorithm.support; d:A\<F  
+d.u##$  
import org.rut.util.algorithm.SortUtil; _L8Mpx*E  
C(f$!~M4b  
/** _c[|@D  
* @author treeroot 3xRM 1GgO  
* @since 2006-2-2 mp!YNI  
* @version 1.0 3Wjq>\  
*/ km9Gwg/zT  
public class QuickSort implements SortUtil.Sort{ 5BrU'NF  
lq~Gc M  
/* (non-Javadoc) B.V?s,U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t-'I`I  
*/ ,NjX&A@  
public void sort(int[] data) { 2j2mW>Z  
quickSort(data,0,data.length-1); Ga]47pQ"F  
} d#E(~t(^  
private void quickSort(int[] data,int i,int j){ -K:yU4V  
int pivotIndex=(i+j)/2; Y=AH%Gy9 )  
file://swap bjuYA/w<  
SortUtil.swap(data,pivotIndex,j); F(J\ctha  
 -PcS(  
int k=partition(data,i-1,j,data[j]); Cw6>^  
SortUtil.swap(data,k,j); n>u.3w L  
if((k-i)>1) quickSort(data,i,k-1); wYZy e^7  
if((j-k)>1) quickSort(data,k+1,j); W/b"a?wE{  
W,xi> 5k  
} B0 6s6Q  
/** >_rzT9gX&  
* @param data ` 52% XI  
* @param i =9kj? u~  
* @param j ]\[m=0K  
* @return jn.R.}TT  
*/ @<hF.4,]  
private int partition(int[] data, int l, int r,int pivot) { ;gZwQ6)i  
do{ 2b; rr  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); CW.&Y?>Tv  
SortUtil.swap(data,l,r); ,Y`'myL8W  
} xeJ9H~^  
while(l SortUtil.swap(data,l,r); 3Cq6h;!#  
return l; ,O$Z,J4VL  
} );0<Odw%.  
D."cQ<sxpN  
} _{N0OX  
T+`xr0  
改进后的快速排序: *!._Ais,\  
6XQ*:N/4al  
package org.rut.util.algorithm.support; W Atg  
j9{O0[v  
import org.rut.util.algorithm.SortUtil; ^>3tYg&7  
L4MxU 2  
/** xnJjCEZ  
* @author treeroot aQz|!8Is  
* @since 2006-2-2 i}.{m Et  
* @version 1.0 qzuQq94k  
*/ pWWL{@J  
public class ImprovedQuickSort implements SortUtil.Sort { %4?SY82  
ZC3tbhV  
private static int MAX_STACK_SIZE=4096; <m?GJuQ'  
private static int THRESHOLD=10; *LY~l  
/* (non-Javadoc) L!CX &  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hB|H9+  
*/ F?*Dr  
public void sort(int[] data) { h$E\2lsE  
int[] stack=new int[MAX_STACK_SIZE]; aK8bKlZe  
QH@Q\ @,  
int top=-1; fG:PdIJ7_  
int pivot; Xz;et>UD*B  
int pivotIndex,l,r; .OVW4svX  
lcu("^{3  
stack[++top]=0; FQ ;4'B^k]  
stack[++top]=data.length-1; <dju6k7uz  
;cM8EU^.  
while(top>0){ 1x~%Ydy  
int j=stack[top--]; $sA,$x:^xI  
int i=stack[top--]; 8[6ny=S`  
7Vz[ji  
pivotIndex=(i+j)/2; bBkm]  >  
pivot=data[pivotIndex]; !^c:'I>~  
o|R*POM  
SortUtil.swap(data,pivotIndex,j); "Y"t2l_n  
FK4nz2&4  
file://partition A)b)ff ,  
l=i-1; tIz<+T_  
r=j; ig2{lEkF  
do{ R`0foSq \M  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8zP:*|D  
SortUtil.swap(data,l,r); tc+GR?-7W  
} t_[M &  
while(l SortUtil.swap(data,l,r); tIn7(C  
SortUtil.swap(data,l,j); [;>zqNy  
-/ (DP x  
if((l-i)>THRESHOLD){ !Iw{Y'  
stack[++top]=i; {] t\`fjrg  
stack[++top]=l-1; LK'S)Jk  
} fhBO~o+K>  
if((j-l)>THRESHOLD){ viW~'}^k7  
stack[++top]=l+1; mF6@Y[/B  
stack[++top]=j; *G%1_   
} !ol hZ  
4A\BGD*5  
} U^E  
file://new InsertSort().sort(data); p9FA_(`^  
insertSort(data); uE,i-g0$Id  
} blKDQ~T2  
/** N0y;PVAGu  
* @param data sDaT[).Hm  
*/ Nz(c"3T;  
private void insertSort(int[] data) { VxUvvJ{-v  
int temp; uR06&SaA>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )@8'k]Glw.  
} }<( "0jC  
} q7 %=`l  
} b>hBct}  
iQ]T+}nn_  
} <Um1h:^   
fP^W"y  
归并排序: ,wwU` U  
f7EIDFX>pt  
package org.rut.util.algorithm.support; Zd[y+$>  
2.fyP"P L  
import org.rut.util.algorithm.SortUtil; T[Z <bW~0  
2]of SdM  
/** ,XWay%8{E  
* @author treeroot HMEs8.  
* @since 2006-2-2 ,\sR;=svK  
* @version 1.0 w6WGFQ_%  
*/ W%Y.SP$Y  
public class MergeSort implements SortUtil.Sort{ H{ n>KZ]\  
.c=$ bQ>^  
/* (non-Javadoc) u%+6Mp[E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jQ.>2-;H9  
*/ !uj!  
public void sort(int[] data) { Lu8%qcC  
int[] temp=new int[data.length]; 'Yaf\Hp  
mergeSort(data,temp,0,data.length-1); &X#x9|=&O  
} .G5NGB  
IEno.i\  
private void mergeSort(int[] data,int[] temp,int l,int r){ >\6jb&,%O  
int mid=(l+r)/2; Sa h<sb=  
if(l==r) return ; }$&T O$LX  
mergeSort(data,temp,l,mid); mr{k>Un\  
mergeSort(data,temp,mid+1,r); %:'1_@Ot 2  
for(int i=l;i<=r;i++){ Y0P}KPD  
temp=data; bl:a&<F  
} ~cO?S2!W  
int i1=l; 9}%~w(P  
int i2=mid+1; |kBg8).B  
for(int cur=l;cur<=r;cur++){ r)9i1rI+  
if(i1==mid+1) _g^K$+F'}  
data[cur]=temp[i2++]; CI~hmL0  
else if(i2>r) wS F!Xx0  
data[cur]=temp[i1++]; #K<=xP  
else if(temp[i1] data[cur]=temp[i1++]; uZqu xu.  
else qHC*$v#.V?  
data[cur]=temp[i2++]; ?{@!!te@3v  
} K%[}[.cW  
} 1}n)J6m  
%T&&x2p^=?  
} uJ|5 Ve  
IEIxjek  
改进后的归并排序: P\*2c*,W;  
W G3mQ\k  
package org.rut.util.algorithm.support; ]zhq.O >2{  
3&a*]  
import org.rut.util.algorithm.SortUtil; .  T6_N  
F'?5V0\he  
/** @ }zS/LO  
* @author treeroot @,y FY  
* @since 2006-2-2 D*d 3w  
* @version 1.0 T(sG.%  
*/ np'M4^E;  
public class ImprovedMergeSort implements SortUtil.Sort { ;i-D~Np|  
uusY,Dt/9  
private static final int THRESHOLD = 10; (04j4teE  
>n$E e J  
/* NR;S3-Iq(  
* (non-Javadoc) W{$+mow7S  
* 43}&w.AS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TeGLAt  
*/ bY"eC i{K  
public void sort(int[] data) { @ @3)D%h  
int[] temp=new int[data.length]; Y bn=Gy  
mergeSort(data,temp,0,data.length-1); b]so9aCz  
} eBYaq!t k  
G8 <It5CU  
private void mergeSort(int[] data, int[] temp, int l, int r) { -+ IX[  
int i, j, k; 3*2&Fw!B  
int mid = (l + r) / 2; Ro3I/NI>  
if (l == r) 1CS]~1Yp:  
return; R^u^y{ohr  
if ((mid - l) >= THRESHOLD) !Lg}q!*%>V  
mergeSort(data, temp, l, mid); {6=H/g=:i  
else JI[rIL \Ey  
insertSort(data, l, mid - l + 1); PU@U@  
if ((r - mid) > THRESHOLD) *{;A\sL  
mergeSort(data, temp, mid + 1, r); d~z<,_ r5c  
else Fb<\(#t  
insertSort(data, mid + 1, r - mid); K_lCDiqG  
k>z-Zg  
for (i = l; i <= mid; i++) { <8z[,X}bM  
temp = data; si mX  
} yS.fe[  
for (j = 1; j <= r - mid; j++) { 2h? r![  
temp[r - j + 1] = data[j + mid]; HU'`kimWb  
} [%)B%h`XGf  
int a = temp[l]; KbuGf$Bv  
int b = temp[r]; gx>mKSzy  
for (i = l, j = r, k = l; k <= r; k++) { 2G:{FY  
if (a < b) { $RFu m'`5  
data[k] = temp[i++]; G/RheH G  
a = temp; <GFB'`L  
} else { >G3 J3P(  
data[k] = temp[j--]; OTFu4"]M  
b = temp[j]; Ci#5@Q9#w  
} S>ylAU;N  
} .pu`\BW>  
}  ~NW5+M(u  
[2j (\vC!  
/** H R!>g  
* @param data ,IVr4#w0=  
* @param l U-]PWt?C{  
* @param i %},S#5L3  
*/ PK`(qK9  
private void insertSort(int[] data, int start, int len) { Xde=}9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); r;6YCI=z  
} 0R^(rE"2#  
} VV}fW"_ND  
} 4z 3$  
} I\4`90uBN  
:c/=fWM%  
堆排序: hjp?/i%TQ  
y@8399;l  
package org.rut.util.algorithm.support; 9q@YE_ji  
(XIq?c1T  
import org.rut.util.algorithm.SortUtil; #]\G*>{  
yNMwd.r[  
/** I3[RaZ2z{  
* @author treeroot "?0 G^zu  
* @since 2006-2-2 xY}j8~k  
* @version 1.0 ` Ehgn?6'  
*/ }Yl8Q>t  
public class HeapSort implements SortUtil.Sort{ "s6_lhu=E7  
E~O>m8hF  
/* (non-Javadoc) )I UWM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .N><yQ-j3'  
*/ ^fiRRFr[  
public void sort(int[] data) { ib=^ tK  
MaxHeap h=new MaxHeap(); {8p?we3l1  
h.init(data); PH4bM  
for(int i=0;i h.remove(); Qs[EA_  
System.arraycopy(h.queue,1,data,0,data.length); om39;nk!}  
} N*oJ$:#  
p YvF}8  
private static class MaxHeap{ waq_d.  
8}`8lOE7  
void init(int[] data){ .Fz6+m;Z  
this.queue=new int[data.length+1]; U[ O!&:6  
for(int i=0;i queue[++size]=data; sL`D}_:  
fixUp(size); AA%g^PWpR  
} S@2Jj>3D?  
} L$?~TY  
Zu73x#pI  
private int size=0; 3bL2fsn5  
W oG  
private int[] queue; Oy`\8*Uy__  
=xWW+w!r  
public int get() { dSD}NM  
return queue[1]; 9 v3Nba  
} &$Ip$"H  
2<./HH*f  
public void remove() { [ Zqg"`  
SortUtil.swap(queue,1,size--); *8eh%3_$h  
fixDown(1); 1ZW'PXUZ  
} m<LzB_ G\  
file://fixdown :< 3;7R'5  
private void fixDown(int k) { $zA[5}{ZtQ  
int j; q'-l; V|  
while ((j = k << 1) <= size) { jN{xpd  
if (j < size %26amp;%26amp; queue[j] j++; Jj!tRZT  
if (queue[k]>queue[j]) file://不用交换 5:3$VWLa <  
break; xfQ;5n  
SortUtil.swap(queue,j,k); ` Z V'7|  
k = j; U5%]nT"[]  
} t"Rf67  
} mpJ_VS`  
private void fixUp(int k) { ?Lb7~XKt\  
while (k > 1) { 3'uES4+r  
int j = k >> 1; Z"nuO\zH~  
if (queue[j]>queue[k]) DQXx}%Px  
break; 7Ki7N{K t  
SortUtil.swap(queue,j,k); m64\@ [  
k = j; ]`U?<9~Ob  
} z#67rh {  
} nE.s  
bGnJ4R3J  
} eb woMG,B-  
hUvH t+d  
} %pKs- n`  
h0QQP  
SortUtil: AQGE(%X  
Os]M$c_88  
package org.rut.util.algorithm; j~> #{"C  
WZ-{K"56  
import org.rut.util.algorithm.support.BubbleSort; Ybiz]1d  
import org.rut.util.algorithm.support.HeapSort; -mdPqVIJn:  
import org.rut.util.algorithm.support.ImprovedMergeSort; `erQp0fBM  
import org.rut.util.algorithm.support.ImprovedQuickSort; .f<,H+m^  
import org.rut.util.algorithm.support.InsertSort; EB<tX`Wp  
import org.rut.util.algorithm.support.MergeSort; f3|=T8"t  
import org.rut.util.algorithm.support.QuickSort; hpKc_|un  
import org.rut.util.algorithm.support.SelectionSort; :WTvP$R  
import org.rut.util.algorithm.support.ShellSort; S$:S*6M@"  
iJ#oI@s  
/** QZP;k!"w  
* @author treeroot E1[%~Cpw*  
* @since 2006-2-2 3ZZI1_j  
* @version 1.0 KywT Oq  
*/ NT:>.~ah@&  
public class SortUtil { JH,bSb  
public final static int INSERT = 1; !.N=Y;@lY  
public final static int BUBBLE = 2; ~&|i'f[  
public final static int SELECTION = 3; c=E.-  
public final static int SHELL = 4; Cagq0-:(p  
public final static int QUICK = 5; E&v-(0  
public final static int IMPROVED_QUICK = 6; 82l";;n4p  
public final static int MERGE = 7; gvt4'kp  
public final static int IMPROVED_MERGE = 8; 0kEq|k9  
public final static int HEAP = 9; }('QIvq2  
6% axbB  
public static void sort(int[] data) { K?eo)|4)DB  
sort(data, IMPROVED_QUICK); g 0=t9J  
} v65r@)\`  
private static String[] name={ 3Or3@e5r  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Qp Vm  
}; Kwau:_B  
1 .k}gl0<  
private static Sort[] impl=new Sort[]{ ~kFRy{z  
new InsertSort(), D4T+Gk"n  
new BubbleSort(), |,f6c Om f  
new SelectionSort(), B}T72!a  
new ShellSort(), l/M+JT~R  
new QuickSort(), g}h0J%s  
new ImprovedQuickSort(), M,lu)~H  
new MergeSort(), y5 +&P  
new ImprovedMergeSort(), -v&srd^  
new HeapSort() V!!'S h  
}; _Y~?.hs^  
v:b%G?o  
public static String toString(int algorithm){ |9JYg7<  
return name[algorithm-1]; Xb;`WE gC  
} OQyOv%g5C  
GQ8P}McA  
public static void sort(int[] data, int algorithm) { pc>R|~J{2  
impl[algorithm-1].sort(data); ;^]F~x}  
} SS-   
3g?T,| 2K  
public static interface Sort { 8ttw!x69)_  
public void sort(int[] data); Ric$Xmu  
} #SOe &W5  
}])f^  
public static void swap(int[] data, int i, int j) { OMNdvrE*=O  
int temp = data; 2/WXdo  
data = data[j]; ? 'nMZ  
data[j] = temp; xbIA97g-O,  
} 5$w1[}UUd  
} _E7eJSM.  
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3+5=?,请输入中文答案:八 正确答案:八