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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。 7ElU5I<S  
插入排序: O\&[|sGY{  
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package org.rut.util.algorithm.support; \Uh$%#}.  
GO<,zOqvU  
import org.rut.util.algorithm.SortUtil; ~;uc@GGo  
/** m2h@*  
* @author treeroot *%;+3SV  
* @since 2006-2-2 A1uo@W  
* @version 1.0 `Eq~W@';Q0  
*/ {Xw6p  
public class InsertSort implements SortUtil.Sort{ f tE2@}  
Ptj[9R  
/* (non-Javadoc) rmh 1.W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wM aqR"%  
*/ "2 "gTS  
public void sort(int[] data) { ;(I')[R "  
int temp; EnD }|9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m&!4*D  
} 2T >K!jS  
}  roNRbA]  
} Ap)[;_9BD  
f9FEH7S68  
} + 2?=W1`  
waRK$/b (  
冒泡排序: v62O+{  
Z36C7 kw  
package org.rut.util.algorithm.support; S#{gCc  
|b^+= "  
import org.rut.util.algorithm.SortUtil; Tc.k0n%W:b  
BK;Gh0mp  
/** {.mP e|  
* @author treeroot noL&>G  
* @since 2006-2-2 _G0_<WH6  
* @version 1.0 eF=cMC  
*/ '2X6 >6`w  
public class BubbleSort implements SortUtil.Sort{ n4%ZR~9WH  
$vjl-1x&  
/* (non-Javadoc) 4SDUTRo a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S;L=W9=wby  
*/ 9?J 3G,&  
public void sort(int[] data) { _`-trE.  
int temp; ,C97|6rC  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Md[M}d8  
if(data[j] SortUtil.swap(data,j,j-1); |0N6]%r  
} MFzJ 8^.1R  
} b;k3B7<  
} }fT5(+ Wo  
} :plN<8  
4Fs5@@>X  
} ~dz,eB  
2uZ4$_  
选择排序: 6>=yX6U1q^  
fWk,k*Z 9  
package org.rut.util.algorithm.support; mi]bS  
:XFr"aSt  
import org.rut.util.algorithm.SortUtil; jRGslak;  
XV %DhR=  
/** 0s'h2={iI  
* @author treeroot bpgvLZb>s  
* @since 2006-2-2 "kS!rJ[  
* @version 1.0 s:ZYiZ-  
*/ k3yA*Ec  
public class SelectionSort implements SortUtil.Sort { `WRM7  
$s.:H4:I  
/* j0`)mR}  
* (non-Javadoc) ;vuqI5k  
* ,$A'Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hb ="J349  
*/ =`pH2SJT  
public void sort(int[] data) { HzQ Y\Y6  
int temp; iKM!>Fi  
for (int i = 0; i < data.length; i++) { )Gm,%[?2C  
int lowIndex = i; $~c wB  
for (int j = data.length - 1; j > i; j--) { eEl71  
if (data[j] < data[lowIndex]) { BL[N  
lowIndex = j; '^!#*O  
} 9,c_(%C  
} +{h.nqdAE  
SortUtil.swap(data,i,lowIndex); fPBJ%SZ  
} L'L[Vpx  
} !YVGT <  
-~] q?k?  
} j/p1/sJ[y  
PX/7:D?  
Shell排序: xNOArb5e5  
a${<~M hm  
package org.rut.util.algorithm.support; RIdh],-  
+=MN_  
import org.rut.util.algorithm.SortUtil; N> jQe  
67b w[#v  
/** Q5xQ5Le  
* @author treeroot  PrqyJ  
* @since 2006-2-2 z;Jz^m-  
* @version 1.0 NpLZ ,|H  
*/ G nPrwDB  
public class ShellSort implements SortUtil.Sort{ 3ZUME\U  
ISHzlEY  
/* (non-Javadoc) fW=vN0Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c]%~X&Tg`  
*/ F87/p  
public void sort(int[] data) { urhOvC$a  
for(int i=data.length/2;i>2;i/=2){ Z_;! f}X  
for(int j=0;j insertSort(data,j,i); 8}K^o>J&K  
} )lZoXt_3  
} Rn$[P.||  
insertSort(data,0,1); MSaOFv_Q  
} m gE r+  
c> 0R_  
/** 3 63KU@`  
* @param data e|}B;<  
* @param j 2!Qg1hM  
* @param i Xti.yQx\  
*/ rU9z? (  
private void insertSort(int[] data, int start, int inc) { Y*/e;mG.  
int temp; LU $=j  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); b.j$Gna>Q  
} dym K@  
} }0V aZ<j  
} 8I[=iU7]l  
Ef$a&*)PH  
} 43?uTnX/  
M;LR$'cP  
快速排序: ZM16 ~k  
$1 t IC_  
package org.rut.util.algorithm.support; Vbv)C3ezD  
UR~s\m  
import org.rut.util.algorithm.SortUtil; ub;:"ns}  
v>0I=ut  
/** p""\uG'  
* @author treeroot J9-n3o  
* @since 2006-2-2 X;]I jha<*  
* @version 1.0 \q@Co42n\  
*/ bae;2| w  
public class QuickSort implements SortUtil.Sort{ Y'<wE2ZL)  
M}e}3w  
/* (non-Javadoc) '*B%&QC-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <?>tjCg'  
*/ o~7D=d?R  
public void sort(int[] data) { H<") )EJI  
quickSort(data,0,data.length-1); v{SZ(;  
} uJ`:@Z^J  
private void quickSort(int[] data,int i,int j){ ua E,F^p  
int pivotIndex=(i+j)/2; rf+Z0C0WYi  
file://swap zygH-3C7o  
SortUtil.swap(data,pivotIndex,j); f?$yxMw:@  
9ZNzC i!  
int k=partition(data,i-1,j,data[j]); &=]!8z=  
SortUtil.swap(data,k,j); :nOI|\ rC  
if((k-i)>1) quickSort(data,i,k-1); "5204I  
if((j-k)>1) quickSort(data,k+1,j); -tIye{  
]nNn"_qh  
} 21O@yNpS$  
/** 2HO2  
* @param data ,rV;T";r  
* @param i nC(Lr,(  
* @param j 2@W`OW Njm  
* @return y+p"5s"  
*/ D#P]tt.Z   
private int partition(int[] data, int l, int r,int pivot) { R"j<C13;%  
do{ CG;+Z-"X  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g:Q:cSg<  
SortUtil.swap(data,l,r); {n&GZG"f  
} l9e=dV:pH  
while(l SortUtil.swap(data,l,r); 9k \M<jA  
return l; lid0 YK-  
} !mmSF1f  
b;FaTm@  
} }@"v7X $  
!jf!\Uu[U  
改进后的快速排序: ep4?;Qmho  
SAiaC _  
package org.rut.util.algorithm.support; Vqcw2  
* mH&Gn1  
import org.rut.util.algorithm.SortUtil; 4V c``Um  
T% GR{mp  
/** +koW3>  
* @author treeroot >{l b|Vx  
* @since 2006-2-2 KrR`A(=WL  
* @version 1.0 LP !d|X  
*/ - (7oFOtg  
public class ImprovedQuickSort implements SortUtil.Sort { m&yHtnt  
F"cZ$TL]  
private static int MAX_STACK_SIZE=4096; 3xN_z?Rg  
private static int THRESHOLD=10; !1%Sf.`!_  
/* (non-Javadoc) I5)$M{#a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B" _Xst  
*/ '14 86q@[$  
public void sort(int[] data) { U o aWI2  
int[] stack=new int[MAX_STACK_SIZE]; -g:i'e  
g}S%D(~  
int top=-1; f:t j   
int pivot; 6q8PLyIp  
int pivotIndex,l,r; EI)2 c.A  
u1gD*4+  
stack[++top]=0; Nf)SR#;  
stack[++top]=data.length-1; =dwy 4  
"&{.g1i9  
while(top>0){ 6J_$dzw  
int j=stack[top--]; :;c`qO4  
int i=stack[top--]; gW^4@q  
p"7[heExw  
pivotIndex=(i+j)/2; HYG1BfEaW  
pivot=data[pivotIndex]; bc:3 5.  
/EJy?TON*  
SortUtil.swap(data,pivotIndex,j); 7{l~\] 6d  
Z +O< IF%  
file://partition ZmycK:f  
l=i-1; 0fLd7*1>  
r=j; 9Fw NX  
do{ Q,Y^9g"B`~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 11 k}Ly  
SortUtil.swap(data,l,r); y2mSPLw  
} )| |CU]"b?  
while(l SortUtil.swap(data,l,r); t BG 9Mn  
SortUtil.swap(data,l,j); lIZ&' z  
fz?woVn  
if((l-i)>THRESHOLD){ 7F_N{avr  
stack[++top]=i; O OXP1L  
stack[++top]=l-1; o\PHs4Ws'7  
} l_8ibLyo  
if((j-l)>THRESHOLD){ $~j9{*]5  
stack[++top]=l+1; JStEOQF4  
stack[++top]=j; P!IXcPKW53  
} :Rnwyj])  
~w9`l8/0  
} V6h8+|hK  
file://new InsertSort().sort(data); AX'-}5T=  
insertSort(data); y&eU\>M  
} T\ukJ25!  
/** 9Zmq7a E  
* @param data 8H T3C\$s  
*/ ^QG<_Dm]  
private void insertSort(int[] data) { 3xKgj5M  
int temp; ~=t9-AF-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .6I'V3:Kg  
} f"NWv!  
} }W(t> >  
} ):nC%0V  
B/^o$i  
} :XoR~syT  
)O$S3ojZ  
归并排序: \m1^sFMZ  
|5&7;;$  
package org.rut.util.algorithm.support; (<@`MPI\@  
%o0H#7'  
import org.rut.util.algorithm.SortUtil; l<<9H-O  
+x/vZXtOK  
/** k,; (`L  
* @author treeroot [-81s!#mkw  
* @since 2006-2-2 {*r!oD!'  
* @version 1.0 .7:ecFKk  
*/ \:'6_K  
public class MergeSort implements SortUtil.Sort{ tA'5ufj*:  
ipt]qJFd  
/* (non-Javadoc) O*x~a;?G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #`l&HV   
*/ )vg@Kc26  
public void sort(int[] data) { )]<^*b>  
int[] temp=new int[data.length]; }w2Et  
mergeSort(data,temp,0,data.length-1); Uyeo0B"  
} ,S@B[+VZ  
tL1\q Qg  
private void mergeSort(int[] data,int[] temp,int l,int r){ rSm#/)4A  
int mid=(l+r)/2; Z:V<P,N  
if(l==r) return ; gw%L M7yQR  
mergeSort(data,temp,l,mid); PI,2b(`h_  
mergeSort(data,temp,mid+1,r); +^J;ic  
for(int i=l;i<=r;i++){ "A5z!6T{  
temp=data; Z@$'fX?~9  
} [a}Idi` K  
int i1=l; 0tPwhJ  
int i2=mid+1; a5d_= :S ;  
for(int cur=l;cur<=r;cur++){ 7 n^1H[q  
if(i1==mid+1) S&k/Pc  
data[cur]=temp[i2++]; 9}42s+  
else if(i2>r) sqjDh  
data[cur]=temp[i1++]; !1]jk(Z  
else if(temp[i1] data[cur]=temp[i1++]; QA)"3g   
else P=9UK`n  
data[cur]=temp[i2++]; }g|9P SbJ  
} Sco'] ^#(  
} f 9IqcCSW  
J9y}rGO  
} V%C'@m(/SZ  
eu$"GbqY  
改进后的归并排序: s.KfMJ"u[  
#G?",,&dM  
package org.rut.util.algorithm.support; wsc=6/#u  
l <Z7bo  
import org.rut.util.algorithm.SortUtil; 1-.i^Hal  
AXnKhYlu  
/** (OavgJ+Y  
* @author treeroot D$w?  
* @since 2006-2-2 -$@'@U  
* @version 1.0 hQNUA|Q=%  
*/ h7m$P^=U  
public class ImprovedMergeSort implements SortUtil.Sort { &Wk:>9]Jrb  
kKDf%=  
private static final int THRESHOLD = 10; 9\kEyb$F=  
04}c_XFFE  
/* Y;dqrA>@  
* (non-Javadoc) ]~ S zb  
* nf:wJ-;*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rg]z  
*/ !.4q{YWcYk  
public void sort(int[] data) { J@IKXhb7_  
int[] temp=new int[data.length]; *xKy^f  
mergeSort(data,temp,0,data.length-1); R+/kx#^  
} W*n|T{n  
vAOThj)  
private void mergeSort(int[] data, int[] temp, int l, int r) { ygK,t*T20  
int i, j, k; W&3,XFnI_  
int mid = (l + r) / 2; #H5 +8W  
if (l == r) 77]lp mC  
return; fj9&J[  
if ((mid - l) >= THRESHOLD) bz [?M}  
mergeSort(data, temp, l, mid); 4CS$%Cu\?w  
else 0fV}n:4Pq  
insertSort(data, l, mid - l + 1); ?f!&M  
if ((r - mid) > THRESHOLD) e. E$Ej]w  
mergeSort(data, temp, mid + 1, r); zcio\P=^|B  
else 3J3wKw!`  
insertSort(data, mid + 1, r - mid); 5B3sRF}  
:SZi4:4-J8  
for (i = l; i <= mid; i++) { i.FdZN{  
temp = data; xsvJjs;=  
} V,?])=Ax  
for (j = 1; j <= r - mid; j++) { DV*e.Y>  
temp[r - j + 1] = data[j + mid]; J$`5KbT3  
} F& lSRL+v  
int a = temp[l]; SWT)M1O2  
int b = temp[r]; b/E3Kse?  
for (i = l, j = r, k = l; k <= r; k++) { *h pS/g/3\  
if (a < b) { R(f%*S4  
data[k] = temp[i++]; ndk~(ex|j  
a = temp; wawJZ+V  
} else { zIr-Rx'dL^  
data[k] = temp[j--]; 5)->.*G*  
b = temp[j]; X8~?uroq  
} 3 [O+wVv  
} f/m0,EERk  
} uw@-.N^  
fEGnI\  
/** X'xnJtk  
* @param data w.+G+ r=  
* @param l LF+E5{=:R  
* @param i a?X@ D<.;  
*/ v[jg|s&6"  
private void insertSort(int[] data, int start, int len) { 3wPUP+)c7  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >3I|5kZ6  
} ^t`0ul]c  
} y6H`FFqK  
} {c<cSrfI  
} @jZ1WHS_a  
f'Oj01[  
堆排序: 9j 0o)]  
<uo@k'   
package org.rut.util.algorithm.support; /8"rCh|m-  
}z2[w@M  
import org.rut.util.algorithm.SortUtil; VLfKN)g  
<EY{goW  
/** AMK(-=  
* @author treeroot D23 c/8K  
* @since 2006-2-2 E[FE-{B#  
* @version 1.0 KvO5-g  
*/ zkd^5A; `  
public class HeapSort implements SortUtil.Sort{ =yPV9#(I/  
I`x[1%y2 F  
/* (non-Javadoc) s+h}O}RV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q+O./1x*,  
*/ J2$,'(!(  
public void sort(int[] data) { 4 lwoTGVZj  
MaxHeap h=new MaxHeap(); 0Ld"df*  
h.init(data); j&q%@%Gm  
for(int i=0;i h.remove(); *0_Q0SeE,o  
System.arraycopy(h.queue,1,data,0,data.length); (Dx p  
} N7^sn!JB  
'{)Jhl47   
private static class MaxHeap{ y<l(F?_  
cXb&Rm' L  
void init(int[] data){ jZiz 0[  
this.queue=new int[data.length+1]; L08lkq,  
for(int i=0;i queue[++size]=data; w/9%C(w6  
fixUp(size); K.b :ae^k  
} j?\z5i""f  
} hzA+,  
<driD'=F  
private int size=0; Tz&h[+6`  
v]}\Ns/  
private int[] queue; YhP+{Y8t  
 _ Ewkb  
public int get() { &7r a  
return queue[1]; b&9~F6aM  
} StiWa<"c  
1R7tnR@[u  
public void remove() { xrv0%  
SortUtil.swap(queue,1,size--); cNye@}$lu  
fixDown(1); 1-|aeJ  
} !x")uYf  
file://fixdown v^Rw9*w{  
private void fixDown(int k) { F(Je$c/J|~  
int j; N686~  
while ((j = k << 1) <= size) { 2AEVBkF;M  
if (j < size %26amp;%26amp; queue[j] j++; ZzxWKIE'c  
if (queue[k]>queue[j]) file://不用交换 eYevj[c;  
break; YdN]Tqc  
SortUtil.swap(queue,j,k); gJ^taUE  
k = j; DHZ`y[&}|N  
} S F da?>  
} v4XEp   
private void fixUp(int k) { ClNuO  
while (k > 1) { QZuKM'D+  
int j = k >> 1; h05<1>?|  
if (queue[j]>queue[k]) 20I/En  
break; [$#G|>x  
SortUtil.swap(queue,j,k); u-QHV1H`(  
k = j; 6MLjU1  
} ( k_9<Yb3  
} kM(m$Oo.  
)4> 7X)j>  
} 5=8t<v1Bn  
7}`FXB  
} ZH~Wn#Wp  
DcE4r>8B  
SortUtil: |7${E^u  
#aiI]'  
package org.rut.util.algorithm; &=XK:+  
| /n  
import org.rut.util.algorithm.support.BubbleSort; <,X=M6$0n  
import org.rut.util.algorithm.support.HeapSort; }y vH)q  
import org.rut.util.algorithm.support.ImprovedMergeSort; I+31:#d  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7m}fVLk  
import org.rut.util.algorithm.support.InsertSort; }'K-1:  
import org.rut.util.algorithm.support.MergeSort; ,sT5TS q  
import org.rut.util.algorithm.support.QuickSort; Y~?Z'uR  
import org.rut.util.algorithm.support.SelectionSort; Pz 0TAb  
import org.rut.util.algorithm.support.ShellSort; *]nk{jo2  
`>OKV;~{z  
/** A2 $05a$%  
* @author treeroot <j3|Mh_(I  
* @since 2006-2-2 eHR]qy 0_X  
* @version 1.0 hD4>mpk  
*/ 0 ZSn r+  
public class SortUtil { rinTB|5  
public final static int INSERT = 1; WQbjq}RfI  
public final static int BUBBLE = 2; C~C`K%7  
public final static int SELECTION = 3; X,{[R |  
public final static int SHELL = 4; Av4(=}M}@  
public final static int QUICK = 5; ) $0>L5d:  
public final static int IMPROVED_QUICK = 6; mu5r4W47  
public final static int MERGE = 7; HJP~ lg  
public final static int IMPROVED_MERGE = 8; WdB\n/BWB  
public final static int HEAP = 9; Ey=}bBx  
X~SNkM  
public static void sort(int[] data) { JpxQS~VX  
sort(data, IMPROVED_QUICK); GRaU]Z]ck  
} g's!\kr  
private static String[] name={ ~Yc!~Rz  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" D4uAwmc  
};  V^rL  
[B+:)i  
private static Sort[] impl=new Sort[]{ c2?VjuB0  
new InsertSort(), y~su1wUp  
new BubbleSort(), G6+6u Wvl  
new SelectionSort(), \L`x![$~q  
new ShellSort(), $\|Q+7lQ  
new QuickSort(), ?[P>2oz  
new ImprovedQuickSort(), oB~V~c}8x  
new MergeSort(), X4Pm&ol  
new ImprovedMergeSort(), lxr;AJ(  
new HeapSort() j(k}NWPH  
}; `r-3"or/$  
$cU7)vmK`  
public static String toString(int algorithm){ XVJH>Zw  
return name[algorithm-1]; ]Qa|9G,b  
} WW2hwB (  
i0J`{PbI  
public static void sort(int[] data, int algorithm) { %wI)uJ2  
impl[algorithm-1].sort(data); ;8^(Z  
} u?H.Z  
U3` ?Z`i(  
public static interface Sort { Eggu-i(rD  
public void sort(int[] data); Pn6~66a6  
} "_&c[VptWi  
@#$(Cs*{]  
public static void swap(int[] data, int i, int j) { ),[@NK&=  
int temp = data; Uw!d;YQm  
data = data[j]; z(EpJK=`_  
data[j] = temp; /7fd"U$Lh  
} '@Yp@ _  
} pOh<I {r1  
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