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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。 &V>fYgui  
插入排序: "EU{8b  
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package org.rut.util.algorithm.support; %4 \OPw&  
2,aPr:]  
import org.rut.util.algorithm.SortUtil; RE.r4uOJg  
/** uxg9yp@|  
* @author treeroot X0 -IRJ[  
* @since 2006-2-2 v(OBXa9  
* @version 1.0 \c[IbL07  
*/ Mg#j3W}]  
public class InsertSort implements SortUtil.Sort{ aA-  
#_mi `7!B#  
/* (non-Javadoc) tNVV)C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %gnM( pxl  
*/ gX{loG  
public void sort(int[] data) { k%y9aO  
int temp; T0)"1D<l  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _Lw OOZj  
} ?Qb<-~~ j1  
} @\&m+;6  
} Th`skK&U  
jL)WPq!m+  
} KJE[+R H+z  
4@.|_zY  
冒泡排序: %3HVFhl  
R:p62c;Tv0  
package org.rut.util.algorithm.support; '03->7V  
%p&k5:4<"#  
import org.rut.util.algorithm.SortUtil; q9"=mO0J+  
,]}?.g  
/** >:=|L%]s;\  
* @author treeroot zi~5l#I  
* @since 2006-2-2 ?S?2 0  
* @version 1.0 }HEvr)v9  
*/ ,3I^?5  
public class BubbleSort implements SortUtil.Sort{ $./bjV%  
oJKa"H-jL  
/* (non-Javadoc) "m{,~'x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7VK}Dy/Vvn  
*/ 4'KOp&#l K  
public void sort(int[] data) { [P |[vWO  
int temp; 1_$xSrwcF  
for(int i=0;i for(int j=data.length-1;j>i;j--){ I8OD$`~*U6  
if(data[j] SortUtil.swap(data,j,j-1); uS&| "*pR  
} /yLZ/<WN  
} 6 \B0^  
} @DW[Z`X  
} OL7_'2_z.  
HE<1v@jW  
} ,:+d g(\r  
+.RKi !  
选择排序: ] 4+s$rG  
PL{Q!QJK'  
package org.rut.util.algorithm.support; 74<!&t  
PNW \*;j  
import org.rut.util.algorithm.SortUtil; 7^} Ll@  
'gQidf  
/** EL3|u64GO  
* @author treeroot p2PY@d}}.  
* @since 2006-2-2 q.Nweu!jQ  
* @version 1.0 tU"raP^ =  
*/ * y^OV_n-8  
public class SelectionSort implements SortUtil.Sort { Cw5%\K$=  
o`khz{SU:  
/* , n !vsIN  
* (non-Javadoc) a:~@CUD >I  
* )hwV`2>l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7j5f ;O^+  
*/ 2tayP@$  
public void sort(int[] data) { \b[9ebME  
int temp; )a}"^1  
for (int i = 0; i < data.length; i++) { hzI *{  
int lowIndex = i; )o!XWh  
for (int j = data.length - 1; j > i; j--) { zb6ju]2  
if (data[j] < data[lowIndex]) { O7']  
lowIndex = j; @{h?+ d  
} &iN--~}!$  
} 79zJ\B_  
SortUtil.swap(data,i,lowIndex); .@iFa3  
} 3M5#4n\v$  
} }U@m*dEG  
[NnauItI  
} `SO|zz|'  
8#R?]Uwq  
Shell排序: S{',QO*D6  
G0n'KB  
package org.rut.util.algorithm.support; >#+IaKL7  
_<ut)G^9  
import org.rut.util.algorithm.SortUtil; g%[n4  
/8@m<CW2Y  
/** T5wjU*=IL  
* @author treeroot EoX_KG{  
* @since 2006-2-2 W{XkV Ke1a  
* @version 1.0 ]IJRnVp%  
*/ {Hr$wa~  
public class ShellSort implements SortUtil.Sort{ wLuv6\E  
{|9}+ @5Q1  
/* (non-Javadoc) 59(U`X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QD{:vG g  
*/ `h;k2Se5  
public void sort(int[] data) { lC 97_ T  
for(int i=data.length/2;i>2;i/=2){ ! BU)K'mj  
for(int j=0;j insertSort(data,j,i);  Do?P<x o  
} nW\(IkX\  
} ;%J5=f%z)  
insertSort(data,0,1); 89o)M5KQ  
} t?;T3k[RM  
4X NxI1w)  
/** b(GFMk  
* @param data ,]R8(bD)  
* @param j 3E} An%  
* @param i jdeva t,&u  
*/ j-]&'-h}#  
private void insertSort(int[] data, int start, int inc) { QzGV.Mt2  
int temp; %IL6ix  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); kfC0zd+  
} >KG E-Yzj  
} 4{9d#[KW  
} >5~7u\#9  
]T O/kl/  
} }:iBx  
NTs;FX~g[  
快速排序: wh 0<Uv  
v4?iOD  
package org.rut.util.algorithm.support; ^Cz YDq  
~Y5l+EF#  
import org.rut.util.algorithm.SortUtil; V6iL5&  
"oJ(J{Jat  
/** eR']#Q46{T  
* @author treeroot B\j~)vg  
* @since 2006-2-2 mkvvNm3  
* @version 1.0 hJ%1   
*/ 1S%k  
public class QuickSort implements SortUtil.Sort{ "u}9@}*  
-237Lx$/  
/* (non-Javadoc) jRkC/Lw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bv?0.{Z  
*/ OVoO6F ]  
public void sort(int[] data) { A3P9.mur  
quickSort(data,0,data.length-1); k/Mp6<?C:  
} ~M ?|Vn  
private void quickSort(int[] data,int i,int j){ O^{1RV3:,T  
int pivotIndex=(i+j)/2; t7#lsd`_  
file://swap .I?@o8'x  
SortUtil.swap(data,pivotIndex,j); #/J 'P[z  
upn8n vy4(  
int k=partition(data,i-1,j,data[j]); 8 ?TKN~ja  
SortUtil.swap(data,k,j); lpQP"%q  
if((k-i)>1) quickSort(data,i,k-1); TZ^LA L'8_  
if((j-k)>1) quickSort(data,k+1,j); aP~gaSx  
ph30'"[Z}  
} 6=|&tE  
/** 6DS43AQs  
* @param data (4~WWU (iT  
* @param i v<rF'D2  
* @param j L0Vgo<A  
* @return W|Ldu;#  
*/ =7[)'  
private int partition(int[] data, int l, int r,int pivot) { vM0_>1nN  
do{ f %fa{  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [p;*r)f2}  
SortUtil.swap(data,l,r); ft5DU/%  
} f|0lj   
while(l SortUtil.swap(data,l,r); )@QJ  
return l; "mj^+u-  
} J2Et-Cz1  
Y'm=etE  
} H~+xB1  
i1*C{Lf;%)  
改进后的快速排序: vx0UoKX  
]Bu DaxWN  
package org.rut.util.algorithm.support; %&] 1FhL  
p]LnE `v  
import org.rut.util.algorithm.SortUtil; 7s>a2  
r7z6___  
/** ?A=b6Um  
* @author treeroot 4^Qi2[w  
* @since 2006-2-2 'qeP6}M  
* @version 1.0 TnxKR$Hoh  
*/ 5rN _jC*U  
public class ImprovedQuickSort implements SortUtil.Sort { 2RNrIU I2  
Ghv{'5w  
private static int MAX_STACK_SIZE=4096; 8Pmwzpk02  
private static int THRESHOLD=10; 3A0_C?E  
/* (non-Javadoc) L=A\ J^%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =3+L#P=i9  
*/ @@pq 'iRn  
public void sort(int[] data) { \ XH@b6{  
int[] stack=new int[MAX_STACK_SIZE]; VyZV (k  
tP'GNsq+m  
int top=-1; XI}I.M  
int pivot; mY2:m(9"5  
int pivotIndex,l,r; D u_$C[  
uCUu!Vfeg  
stack[++top]=0; c8Pb  
stack[++top]=data.length-1; jPwef##~7  
aPBX=;(  
while(top>0){ JieU9lA^&B  
int j=stack[top--]; gA +:CgQ  
int i=stack[top--]; `ut)+T V  
}brr ) )  
pivotIndex=(i+j)/2; h%b hrkD  
pivot=data[pivotIndex]; Qilj/x68  
zeOb Aw1O  
SortUtil.swap(data,pivotIndex,j); >}]H;& l  
>ZCo 8aK  
file://partition 9+VF<;Xw  
l=i-1; JLW$+62  
r=j; Baq ~}B<  
do{ [}k|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); & l^n4  
SortUtil.swap(data,l,r); BR3mAF  
} -uR{X G. D  
while(l SortUtil.swap(data,l,r); mTd<2Hy  
SortUtil.swap(data,l,j);  # eEvF  
YRa4W.&Yn  
if((l-i)>THRESHOLD){ [t}):}~F|  
stack[++top]=i; 2]Fu 1  
stack[++top]=l-1;  GVp  
} hmzair3X  
if((j-l)>THRESHOLD){ q!*MH/R  
stack[++top]=l+1; c,BAa*]K  
stack[++top]=j; '5WN,Vy8.  
} i+U51t<  
!$E~\uT  
} |0w~P s  
file://new InsertSort().sort(data); mVrKz  
insertSort(data); \9jpCNdJ  
} 32KR--mn%  
/** 9S"N4c>  
* @param data Gc}0]!nrW9  
*/ "o==4?*L  
private void insertSort(int[] data) { =tq7z =k  
int temp; L w*1 .~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {{zua- F  
} BD4"pcr  
} /$*; >4=>f  
} 0~i qG  
TQ~&Y)".  
} W9jNUZVXE#  
:~r#LRgc  
归并排序: =F[lg?g  
Nh :JU?h  
package org.rut.util.algorithm.support; JJNmpUJ  
5=.7\#D  
import org.rut.util.algorithm.SortUtil; ahoh9iJ  
cUV TRWV  
/** Zih5/I  
* @author treeroot g5<ZS3tQ  
* @since 2006-2-2 u;(K34!)  
* @version 1.0 |$w0+bV*  
*/ 0$?qoS  
public class MergeSort implements SortUtil.Sort{ 6m\*]nOy4  
xOgq-@`  
/* (non-Javadoc) (WkTQRcN,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JchA=n  
*/ AG=9b  
public void sort(int[] data) { _X?y ,#  
int[] temp=new int[data.length]; z=%IcSx;  
mergeSort(data,temp,0,data.length-1); yHtGp%j  
} W9+h0A-  
y8D 8Y8B  
private void mergeSort(int[] data,int[] temp,int l,int r){ >+f'!*%7He  
int mid=(l+r)/2; F]Pul|.l  
if(l==r) return ; h+ TB]  
mergeSort(data,temp,l,mid); K9}jR@jy$  
mergeSort(data,temp,mid+1,r); - YAO3  
for(int i=l;i<=r;i++){ n4XMN\:g{  
temp=data; ?9,YVylg  
} 'iGMn_&  
int i1=l; W=M< c@  
int i2=mid+1; >]C<j4  
for(int cur=l;cur<=r;cur++){ FcY$k%;'Q  
if(i1==mid+1) ;]"n?uo  
data[cur]=temp[i2++]; n<+~ zQ  
else if(i2>r) 'bG1U`v=3  
data[cur]=temp[i1++]; (T4k~T`3  
else if(temp[i1] data[cur]=temp[i1++]; UT % #K%  
else UzN8G$92qF  
data[cur]=temp[i2++]; B\NcCp`5  
} @!,D%]8"  
} (c 1u{  
:Z]/Q/$  
} QM7[O]@  
@ > cdHv  
改进后的归并排序: H2s*s[T -  
$kM '  
package org.rut.util.algorithm.support; s%hU*^ 8  
X #H:&*[!  
import org.rut.util.algorithm.SortUtil; c-v*4b/d  
5=Zp%[ #  
/** L>i<dD{  
* @author treeroot 0>8ZN!@K  
* @since 2006-2-2 :R{x]sv  
* @version 1.0 % d4+Ctrp-  
*/ $;Q=iv 3  
public class ImprovedMergeSort implements SortUtil.Sort {  %L{  
7B VXBw  
private static final int THRESHOLD = 10; aKa  R  
1+VY><=n  
/* ]gjr+GV  
* (non-Javadoc) .$n$%|"H-  
* w 5!ndu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aViJ   
*/ 4|I7:~  
public void sort(int[] data) { <e$5~Spc  
int[] temp=new int[data.length]; ^7J~W'hI  
mergeSort(data,temp,0,data.length-1); xNocGtS  
} 5+J 64_  
#IH<HL)t%e  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~r{\WZ.  
int i, j, k; J~M H_N  
int mid = (l + r) / 2; G*8+h  
if (l == r) cA2^5'$$  
return; s0_-1VU  
if ((mid - l) >= THRESHOLD) wE-Ji<1HJ  
mergeSort(data, temp, l, mid); O-y6!u$6&  
else ?r^ hm u"a  
insertSort(data, l, mid - l + 1); hg$qb eUl  
if ((r - mid) > THRESHOLD) ecM4]U  
mergeSort(data, temp, mid + 1, r); "``W6W-(  
else "u .)X3  
insertSort(data, mid + 1, r - mid); !hwzKm=%N  
byEvc[/>Ys  
for (i = l; i <= mid; i++) { Aqx3!  
temp = data;  Dlqn~  
} tjBh$)  
for (j = 1; j <= r - mid; j++) { |iLx $P6  
temp[r - j + 1] = data[j + mid];  muK'h`  
} Ec7{BhH)  
int a = temp[l]; !V$6+?2   
int b = temp[r]; "#_)G7W+e  
for (i = l, j = r, k = l; k <= r; k++) { jh<TdvF2$  
if (a < b) { qAS70XjOF  
data[k] = temp[i++]; &/J.0d-*``  
a = temp; xl1L4R)6D  
} else { .E?bH V  
data[k] = temp[j--]; chvrHvByS  
b = temp[j]; 4*@G&v?n  
} z v L>(R  
} 12%z3/i  
} h(+m<J  
jsZiARTZRl  
/** /Bg6z m  
* @param data l(3'Re  
* @param l se^NQ=  
* @param i v^ y}lT  
*/ XvfcPI6  
private void insertSort(int[] data, int start, int len) { + cV5h  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); sw3:HNG=  
} k;"R y8[k  
} /8P4%[\  
} >o0&:h|>$'  
} ! 0>!tW  
}mtC6G41Q  
堆排序: e]dPF[?7  
twYB=68  
package org.rut.util.algorithm.support; o=QRgdPD  
^rxfNcU7  
import org.rut.util.algorithm.SortUtil; mMD$X[:  
<wd4^Vr!2  
/** m2-fi*Mgg  
* @author treeroot K4h-4Qbn  
* @since 2006-2-2 SG(%d^x`R  
* @version 1.0 Qwp\)jVi  
*/ -@gJqoo>  
public class HeapSort implements SortUtil.Sort{ 1`2);b{@  
Tb!B!m  
/* (non-Javadoc) *783xEF>f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O&rD4#  
*/ {|7OmslC@  
public void sort(int[] data) { 0~@L%~  
MaxHeap h=new MaxHeap(); " kE:T.,  
h.init(data); 36x5q 1  
for(int i=0;i h.remove(); .dg 4gr\D  
System.arraycopy(h.queue,1,data,0,data.length); xy-$v   
} #G[ *2h~99  
s&_IWala  
private static class MaxHeap{ +[ZMrTW!0C  
N>cp>&jV  
void init(int[] data){ oneSgJ  
this.queue=new int[data.length+1]; I;Z`!u:+  
for(int i=0;i queue[++size]=data; >~^mIu_BH  
fixUp(size); 2heWE  
} _Gs  
} c*M)DO`y;h  
N$ qNe'b  
private int size=0; T ?<'=  
w>9H"Q[  
private int[] queue; Hd=D#u=A4{  
@2%VU#!m  
public int get() { :Z*02JwK  
return queue[1]; Lv,ji_  
} H(5ui`'s  
n8;G,[GM80  
public void remove() { 6>LQGO  
SortUtil.swap(queue,1,size--); 1S)0 23N  
fixDown(1); &Gy'AUz-  
} kERaY9L\  
file://fixdown n{qw ]/  
private void fixDown(int k) { 9`gGsC  
int j; !7,K9/"  
while ((j = k << 1) <= size) { $Kw"5cm  
if (j < size %26amp;%26amp; queue[j] j++; %DND&0`  
if (queue[k]>queue[j]) file://不用交换 2'O!~8U  
break; yaYIgG  
SortUtil.swap(queue,j,k); J7 *G/F  
k = j; UtGd/\:  
} x#}j3" PP  
}  2U+z~  
private void fixUp(int k) { :+gCO!9Y  
while (k > 1) { q*<J $PI  
int j = k >> 1; MSYLkQ}_b  
if (queue[j]>queue[k]) eqUn8<<s  
break; 0-&s J  
SortUtil.swap(queue,j,k); *"wD& E?  
k = j; f-f\}G&G  
} #(7RX}  
} ]Xkc0E1  
iK6<^,]'  
} z }b U\3!  
zOdasEd8!  
} 5f^`4 pT  
fB @pwmu  
SortUtil: 1!v >I"]  
 ]5)&36  
package org.rut.util.algorithm; "|l oSf@  
).O2_<&?F  
import org.rut.util.algorithm.support.BubbleSort; wJ]$'c3  
import org.rut.util.algorithm.support.HeapSort; %.atWX`b  
import org.rut.util.algorithm.support.ImprovedMergeSort; D !D%.  
import org.rut.util.algorithm.support.ImprovedQuickSort; i$LV44  
import org.rut.util.algorithm.support.InsertSort; [(e`b  
import org.rut.util.algorithm.support.MergeSort; Jk6/i;4|  
import org.rut.util.algorithm.support.QuickSort; dn.c#,Y  
import org.rut.util.algorithm.support.SelectionSort; ~]_jKe4W  
import org.rut.util.algorithm.support.ShellSort; ReG O9}  
K~hlwjrt  
/** |)P;%Fy9  
* @author treeroot CsST-qxg  
* @since 2006-2-2 /+JP~ K  
* @version 1.0 [9W&1zY  
*/ abk:_  
public class SortUtil { WG[0$j  
public final static int INSERT = 1;  C>K"ZJ  
public final static int BUBBLE = 2; $Ln2O#  
public final static int SELECTION = 3; j"$b%|  
public final static int SHELL = 4; ?[>BssW  
public final static int QUICK = 5; :#!F 7u  
public final static int IMPROVED_QUICK = 6; $gD(MKR)~  
public final static int MERGE = 7; Dil4ut- $  
public final static int IMPROVED_MERGE = 8; HjF'~n  
public final static int HEAP = 9; NYV0<z@M2M  
GL0':LsZ  
public static void sort(int[] data) { { G>+.  
sort(data, IMPROVED_QUICK); },QFyT  
} iNrmhiql  
private static String[] name={ }-]s#^'w  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" TXk"[>,:H  
}; UNH}*]u4`  
Y8CYkJTAD-  
private static Sort[] impl=new Sort[]{ z )}wo3  
new InsertSort(), 8'_ ]gfF  
new BubbleSort(), VTX'f2\  
new SelectionSort(), ,vY I O  
new ShellSort(), u #QSa$P  
new QuickSort(), ah@GSu;7  
new ImprovedQuickSort(), b8-^wJH!  
new MergeSort(), @Oc}\Rg  
new ImprovedMergeSort(), 6I.+c  
new HeapSort() GH)+yD[o  
}; %KVRiX  
5>k~yaju/  
public static String toString(int algorithm){ +z/73s0~  
return name[algorithm-1]; rN!9&  
} UtW3KvJ#=  
+wgUs*(W  
public static void sort(int[] data, int algorithm) { 1~iBzPU2  
impl[algorithm-1].sort(data); /SM#hwFxJ&  
} &7y1KwfXn  
WRyv >Y  
public static interface Sort { `fE:5y  
public void sort(int[] data); cngPc]?N  
} K>p:?w  
Uc;IPS  
public static void swap(int[] data, int i, int j) { |P?B AWYeQ  
int temp = data; Tf]VcEF  
data = data[j]; I)4|?tb ?  
data[j] = temp; z&G3&?Z  
} v?'k)B  
} |8?{JKsg  
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