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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。 p"k[ac{  
插入排序: lVR a{._m  
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package org.rut.util.algorithm.support; :0'2m@x~  
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import org.rut.util.algorithm.SortUtil; 2Pz)vnV"  
/** 2uy<wJE >  
* @author treeroot REc+@;B  
* @since 2006-2-2 k< i#agq  
* @version 1.0 v>oWk:iJP  
*/ s?pd&_kOv3  
public class InsertSort implements SortUtil.Sort{ 7f,!xh$  
j]5mzz~  
/* (non-Javadoc) e3!0<A[X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dub %fs  
*/ E3P2  
public void sort(int[] data) { GT3 ?)g{Z  
int temp; T=D|jt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1SO!a R#g  
} \;F_QV  
} G Rq0nhJ  
} I {&8iUN  
[t}\8^y  
} >Ndck2@  
##_Jz5P  
冒泡排序: n)xLEx,  
%{*)-_M  
package org.rut.util.algorithm.support; d]!`II  
NPY\ >pf  
import org.rut.util.algorithm.SortUtil; U,e'vS{  
lw j,8  
/** ;(I')[R "  
* @author treeroot rwh,RI) )g  
* @since 2006-2-2 e|2@z-Sp-  
* @version 1.0 v"3($?au0  
*/ " s3eO  
public class BubbleSort implements SortUtil.Sort{ rD":Gac  
%S9YjMR@  
/* (non-Javadoc) j$ h>CZZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4_&+]S  
*/ 'wm :Xa  
public void sort(int[] data) { @})]4H  
int temp; /t"F Z#  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @eOD+h'  
if(data[j] SortUtil.swap(data,j,j-1); noL&>G  
} f:hsE  
} eF=cMC  
} ExKjH*gn  
} Tt\h#E  
qGVf! R  
} K}e:zR;;^  
Z(c3GmY  
选择排序: vj,OX~|  
b;k3B7<  
package org.rut.util.algorithm.support; m(DJ6CSa  
 TG^?J`  
import org.rut.util.algorithm.SortUtil; 2uZ4$_  
rU!QXg]uD  
/** g:rjt1w`D  
* @author treeroot jRGslak;  
* @since 2006-2-2 [~&yLccN  
* @version 1.0 `G0GWh)`x  
*/ ]:_s7v  
public class SelectionSort implements SortUtil.Sort { orON)S ks  
M%(^GdI#Vf  
/* !> 2kH  
* (non-Javadoc) W{W8\  
* =`pH2SJT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w]O [{3"  
*/ >K;DBy*  
public void sort(int[] data) { eEl71  
int temp; *'to#_n&W  
for (int i = 0; i < data.length; i++) { :tf'Gw6v  
int lowIndex = i; fPBJ%SZ  
for (int j = data.length - 1; j > i; j--) {  ,7h0y  
if (data[j] < data[lowIndex]) { }5]2tH${  
lowIndex = j; X 7R&>Pf  
} N(Sc!rX  
} Em ;2fh  
SortUtil.swap(data,i,lowIndex); aDZ,9}  
} /nWBol,  
} vN9R. R  
C2}f'  
} 'zhv#&O  
L.?QZN%cN  
Shell排序: iz%wozf  
s3sPj2e{  
package org.rut.util.algorithm.support; >r\q6f#J4  
vdIert?p  
import org.rut.util.algorithm.SortUtil; z3Zo64V~7  
NH'Dz6K5  
/** 572{DC&T  
* @author treeroot _)kTlX:,  
* @since 2006-2-2 b[KZJLZ)  
* @version 1.0 dt||nF  
*/ #IR,KX3]A  
public class ShellSort implements SortUtil.Sort{ Qg]+&8!*  
Bwl@Muw  
/* (non-Javadoc) {/}%[cY =  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =&I9d;7  
*/ cDIZkni=  
public void sort(int[] data) { PH$C."Vv  
for(int i=data.length/2;i>2;i/=2){ $1 t IC_  
for(int j=0;j insertSort(data,j,i); 4;*jE (  
} [\3W_jR  
} i__f%j`!W  
insertSort(data,0,1); -v! ;  
} ezb*tN!  
AO238RC!:  
/** ON9L+"vqv0  
* @param data ;,/4Ry22j-  
* @param j Z4oD6k5oc  
* @param i xLSf /8e  
*/ xz Hb+1+p  
private void insertSort(int[] data, int start, int inc) { 2]]}Xvx4#  
int temp; &=]!8z=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d$^ @$E2f  
} K0~=9/  
} a+RUSz;DL  
} 22'Ra[  
Gz52^O :  
} K@%gvLa\  
(&SPMhs_|(  
快速排序: RN&6z"|jR  
5"y)<VLJX  
package org.rut.util.algorithm.support; 0avtfQ +f  
+%H=+fJ2}  
import org.rut.util.algorithm.SortUtil; U1`pY:P  
Oyb0t|do+  
/** Q zg?#|  
* @author treeroot 6"?#E[ #[  
* @since 2006-2-2 _Wq;bKG  
* @version 1.0 W[R`],x`  
*/ Cp+tcrd_s  
public class QuickSort implements SortUtil.Sort{ YYL3a=;`a  
T% GR{mp  
/* (non-Javadoc) Y9I|s{~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EeH ghq  
*/ H_,4N_hL  
public void sort(int[] data) { =d+`xN*  
quickSort(data,0,data.length-1); Apj[z2nr  
} n0G@BE1Y=  
private void quickSort(int[] data,int i,int j){ e,Z[Nox  
int pivotIndex=(i+j)/2; U o aWI2  
file://swap n a*Z0y  
SortUtil.swap(data,pivotIndex,j); F|cli <  
"_2;+@+  
int k=partition(data,i-1,j,data[j]); 97 ,Yq3  
SortUtil.swap(data,k,j); E62_k 0q  
if((k-i)>1) quickSort(data,i,k-1); XD" 4t4~>  
if((j-k)>1) quickSort(data,k+1,j); aK_k'4YTm  
d,o*{sM5d  
} W7;RQ  
/** 8)M WC:  
* @param data c$lZ\r"  
* @param i =f23lA  
* @param j %%#bTyF  
* @return :Gzp (@<@e  
*/ 9-vQn/O^D  
private int partition(int[] data, int l, int r,int pivot) { Bz|/TV?X(  
do{ Lxv6\3I+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); G*,7pc  
SortUtil.swap(data,l,r); g[HuIn/  
} $Yp.BE<}  
while(l SortUtil.swap(data,l,r); d^v.tYM$N  
return l; x <OVtAUB  
} d(:I~m  
O OXP1L  
} rVRv*W  
7z&$\qu2  
改进后的快速排序: KV-h~C  
N7KG_o%  
package org.rut.util.algorithm.support; dc_2nF  
mB6%. "  
import org.rut.util.algorithm.SortUtil; uHRxV"@}[1  
yqtaQ0F~  
/** ks %arm&  
* @author treeroot /1D.Ud^  
* @since 2006-2-2 !N_eZPU.v  
* @version 1.0 yW\kmv.O  
*/ .>~er?-  
public class ImprovedQuickSort implements SortUtil.Sort { +F%tBUY{<  
aR'~=t&;z1  
private static int MAX_STACK_SIZE=4096; [0]J 2  
private static int THRESHOLD=10; *cCj*Zr]  
/* (non-Javadoc) $ER9u2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z6Z/Y()4Tl  
*/ M;NIcM  
public void sort(int[] data) { gjFQDrz(  
int[] stack=new int[MAX_STACK_SIZE]; [d-Y1  
e 'F:LMX  
int top=-1; baL<|& c  
int pivot; HD1/1?y!@q  
int pivotIndex,l,r; U[OUIXUi  
ts("(zI1E  
stack[++top]=0; R~|(]#com  
stack[++top]=data.length-1; e**'[3Y  
QUfF>,[sv  
while(top>0){ e p Dp*  
int j=stack[top--]; DRTT3;,N  
int i=stack[top--]; _34%St!lg  
)K`tnb.Pf  
pivotIndex=(i+j)/2; 4x?I,cAN  
pivot=data[pivotIndex]; !R#PJH/TM  
fF=tT C  
SortUtil.swap(data,pivotIndex,j); p,uM)LD  
]scr@e  
file://partition OsVz[wN  
l=i-1; (:%t  
r=j; Z!jJ93A"  
do{ :_nGh]%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~?)y'?  
SortUtil.swap(data,l,r); -mo4`F  
} =NnG[#n%  
while(l SortUtil.swap(data,l,r); 4cJ/XgX  
SortUtil.swap(data,l,j); /11CC \  
a1[J>  
if((l-i)>THRESHOLD){ Jw^my4  
stack[++top]=i; IjQgmS~G  
stack[++top]=l-1; jqTK7b  
} #e[r0f?U  
if((j-l)>THRESHOLD){ F[0~{*/|G  
stack[++top]=l+1; }#Iqq9[  
stack[++top]=j; /[ Rp~YzW  
} S&k/Pc  
PlgpH'z4$  
} ]@}hyM[D;  
file://new InsertSort().sort(data); g2rH"3sC  
insertSort(data); U2~|AkL  
} zzh7 "M3Qn  
/** 8,VEuBZ  
* @param data HzuG- V  
*/ 9y} J|z  
private void insertSort(int[] data) { *KU:D Y{  
int temp; osLEH?iKW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wqap~X  
} 5Fq+^  
} 98 uMD  
} Yfs eX;VX  
IF<T{/MA  
} iU=:YPE+ .  
i1]}Q$  
归并排序: |S]fs9  
d>r]xXB6  
package org.rut.util.algorithm.support; :`<MlX  
="Az g8W  
import org.rut.util.algorithm.SortUtil; o>m*e7l,  
Pi,86?  
/** &XXr5ne~C  
* @author treeroot Y;dqrA>@  
* @since 2006-2-2 [[Nn~7  
* @version 1.0 [i> D|X  
*/ ,zJ:a>v  
public class MergeSort implements SortUtil.Sort{ ') 2LP;(  
0 U#m7j  
/* (non-Javadoc) ygK,t*T20  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u%OLXb  
*/ &b-&0 rTqz  
public void sort(int[] data) { 0j}@lOt(  
int[] temp=new int[data.length]; (&_^1  
mergeSort(data,temp,0,data.length-1); gzlRK^5  
} UjyrmQf  
X2P8Zq=%a  
private void mergeSort(int[] data,int[] temp,int l,int r){ n*#HokX  
int mid=(l+r)/2; t+,2 p|B  
if(l==r) return ; !QME!c>*$  
mergeSort(data,temp,l,mid); n S Vr,wU  
mergeSort(data,temp,mid+1,r); y7'9KQ  
for(int i=l;i<=r;i++){ 1].m4vC  
temp=data; 4]xD-sc  
} tU>7 jo[-p  
int i1=l; [3x*47o"z  
int i2=mid+1; =t|,6Vp  
for(int cur=l;cur<=r;cur++){ j|[>f  
if(i1==mid+1) QVl"l'e8  
data[cur]=temp[i2++]; LF+E5{=:R  
else if(i2>r) oTTE<Ct [  
data[cur]=temp[i1++]; dMI G2log  
else if(temp[i1] data[cur]=temp[i1++]; n9Vr*RKM)  
else Pv*]AF;9pQ  
data[cur]=temp[i2++]; ]v+yeGIKS  
} ke2M&TV  
} P\@efq@!  
@R`Ao9n9V  
} 8}Q 2!,9Q  
vVjk9_Ul  
改进后的归并排序: c&PaJm  
[88PCA:  
package org.rut.util.algorithm.support; &WS'Me  
U@53VmrOy  
import org.rut.util.algorithm.SortUtil; Sb}=j;F  
o76{;Bl\O  
/** Qn;,OB k  
* @author treeroot (Dx p  
* @since 2006-2-2 vLGnLpt  
* @version 1.0 F><ficT  
*/ &@w0c>Y  
public class ImprovedMergeSort implements SortUtil.Sort { gIKQip<  
WM ]eb, 8q  
private static final int THRESHOLD = 10; .kB!',v\  
C>QWV[F  
/* %Y9CZRY 9  
* (non-Javadoc) FJn.V1  
* &7r a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c IPOI'3d  
*/ !&5*H06  
public void sort(int[] data) { |FSp`P  
int[] temp=new int[data.length]; {T DZDH  
mergeSort(data,temp,0,data.length-1); /0XmU@B  
} 2G_]Y8  
7j88^59  
private void mergeSort(int[] data, int[] temp, int l, int r) { %8xKBL]J  
int i, j, k; 4zZ.v"laVM  
int mid = (l + r) / 2; s&XL{FE  
if (l == r) `v)ZOw9&  
return; `^|l+TJG  
if ((mid - l) >= THRESHOLD) Y8N+v+V/  
mergeSort(data, temp, l, mid); sD|}? 7  
else }T}xVd0  
insertSort(data, l, mid - l + 1); 3PlIn0+LX  
if ((r - mid) > THRESHOLD) bCiyz+VyJn  
mergeSort(data, temp, mid + 1, r); [2!C ^ \t  
else {BgJ=0g?  
insertSort(data, mid + 1, r - mid); x~K79Mya  
| /n  
for (i = l; i <= mid; i++) { p6ryUJc6  
temp = data; QlS_{XV  
} "]OROJGa  
for (j = 1; j <= r - mid; j++) { R`B} T<*  
temp[r - j + 1] = data[j + mid]; $EzWUt  
} U2v;GIo$yU  
int a = temp[l]; ,H1K sN  
int b = temp[r]; hE<Sm*HU  
for (i = l, j = r, k = l; k <= r; k++) { N|3#pHm@  
if (a < b) { kI2+&  
data[k] = temp[i++]; 7 D{%  
a = temp; X,{[R |  
} else { DO( 3hIj  
data[k] = temp[j--]; {|B[[W\TN  
b = temp[j]; WdB\n/BWB  
} =^\?{oV  
} Ijk hV  
} ]wi0qc2 {  
O%haaL\  
/**  +cKOIMu9  
* @param data 7 |GSs=  
* @param l s+z5"3'n  
* @param i X5)(,036  
*/ >s1?rC  
private void insertSort(int[] data, int start, int len) { n{&;@mgI  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2e03m62*  
} UtQCTNjC{  
} ]Qa|9G,b  
} !~vx|_$#  
} v`]y:Ku|wR  
S _ UAz  
堆排序: B|,d  
Z`U+ a  
package org.rut.util.algorithm.support; Nwe-7/Q  
9!kp3x/`  
import org.rut.util.algorithm.SortUtil; \CV HtV  
KY%{'"'u  
/** l(}MM|ka  
* @author treeroot /lh1sHgD  
* @since 2006-2-2 5G$ ,2i(  
* @version 1.0 =\oL'>q  
*/ 9v?@2sOoE  
public class HeapSort implements SortUtil.Sort{ .U44p*I  
x 4sIZe+  
/* (non-Javadoc) O0s!3hKu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4nQ5zwiV  
*/ 9qgs*]J  
public void sort(int[] data) { e+D]9wM8  
MaxHeap h=new MaxHeap(); .N@+Ms3  
h.init(data); d3S Me  
for(int i=0;i h.remove(); 72.Msnn  
System.arraycopy(h.queue,1,data,0,data.length); x5V))~Ou  
} I|qhj*_C  
(DS"*4ty  
private static class MaxHeap{ V aG Qre  
-sZb+2tDa  
void init(int[] data){  S~E@A.7  
this.queue=new int[data.length+1]; G_ ,9h!e  
for(int i=0;i queue[++size]=data; #z<# oC5  
fixUp(size); BV }CmU&DA  
} C/#pK2xY  
} Xo] 2iQy  
B]: |;d  
private int size=0; dUt4] ar  
DwZRx@  
private int[] queue; N)AlQ'Lwx  
%KkC1.yu<  
public int get() { dr+(C[=  
return queue[1]; >]xW{71F@  
} -2>s#/%  
u' Q82l&Y  
public void remove() { 0t}v@-abU  
SortUtil.swap(queue,1,size--); / o I 4&W  
fixDown(1); :]]x^wony~  
} bgKC^Q/F  
file://fixdown v'b%m8  
private void fixDown(int k) { 80'@+AD  
int j; *78c2`)[  
while ((j = k << 1) <= size) { HKI\i)c  
if (j < size %26amp;%26amp; queue[j] j++; *Egg*2P;"Q  
if (queue[k]>queue[j]) file://不用交换 cL ~WDW/  
break; WFFQxd|Z  
SortUtil.swap(queue,j,k); saQs<1  
k = j; EU%v |]  
} ]+3M\ ib  
} {i?G:K  
private void fixUp(int k) { ~<9e }J  
while (k > 1) { }r,xx{.u7  
int j = k >> 1; ~;H,cPvrEg  
if (queue[j]>queue[k]) (=;'>*L(  
break; DuR9L'  
SortUtil.swap(queue,j,k); _ahp7-O  
k = j; vYb4&VV  
} <!XunXh  
} #jG?{j3;?  
,d38TN  
} %=9o'Y,4  
LjE3|+pJ  
} *pSnEWwE  
a^@.C5  
SortUtil: rTR"\u7&H  
5X+`aB  
package org.rut.util.algorithm; Qkx*T9W   
a{Y|`*7y  
import org.rut.util.algorithm.support.BubbleSort; ^Cp2#d*  
import org.rut.util.algorithm.support.HeapSort; Ao}<a1f  
import org.rut.util.algorithm.support.ImprovedMergeSort; gj @9(dk%  
import org.rut.util.algorithm.support.ImprovedQuickSort; <nD@4J-A0  
import org.rut.util.algorithm.support.InsertSort; d7[^p N  
import org.rut.util.algorithm.support.MergeSort; .BBJhXtrdu  
import org.rut.util.algorithm.support.QuickSort; [r8[lkR  
import org.rut.util.algorithm.support.SelectionSort; av|T|J/(  
import org.rut.util.algorithm.support.ShellSort; BlU&=;#r5>  
;<Hk Cd  
/** JfSe; v  
* @author treeroot *8?2+ )5"  
* @since 2006-2-2 G"J nQ  
* @version 1.0 ]bh%pn  
*/ rC_1f3A  
public class SortUtil { 5;" $X 1{  
public final static int INSERT = 1; U\:Y*Ai  
public final static int BUBBLE = 2; `14@dk  
public final static int SELECTION = 3; XWS]4MB+vm  
public final static int SHELL = 4; 76@W:L*J$J  
public final static int QUICK = 5; SF+L-R<e  
public final static int IMPROVED_QUICK = 6; fv+ET:T%  
public final static int MERGE = 7; ='b)6R  
public final static int IMPROVED_MERGE = 8; RIXeV*ix  
public final static int HEAP = 9; y.D+M$f  
#U L75  
public static void sort(int[] data) { W0sLMHq  
sort(data, IMPROVED_QUICK); ^U5N!"6R  
} 6_QAE6A  
private static String[] name={ Y` ]P&y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" '%ilF1#  
}; \}=T4w-e  
[niFJI sc  
private static Sort[] impl=new Sort[]{ 1q-;+Pd;  
new InsertSort(), \UZGXk  
new BubbleSort(), Qe _{<E  
new SelectionSort(), /"D,gn1S*  
new ShellSort(), ?<3 d Fb  
new QuickSort(), Q%d%Io\-t  
new ImprovedQuickSort(), =-:%~n g  
new MergeSort(), 6}I X{nQI  
new ImprovedMergeSort(), {c_bNYoE  
new HeapSort() ?.< Qgd  
}; dGOFSH  
L5 `k3ap|  
public static String toString(int algorithm){ 1] =X  
return name[algorithm-1]; j#2Xw25  
} *|W](id7e  
l3F$5n  
public static void sort(int[] data, int algorithm) { K<5yjG8&  
impl[algorithm-1].sort(data); Ro9:kEG$  
} ANBuX6q  
~%=%5}  
public static interface Sort { U&])ow):  
public void sort(int[] data); oc] C+l  
} )e3w-es~4  
8,IF%Z+LI  
public static void swap(int[] data, int i, int j) { i *:QbMb  
int temp = data; k-n`R)p:  
data = data[j]; $}tF66d  
data[j] = temp; , p}:?uR  
} "}xIt)n%;  
} SJP3mq/^K  
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