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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{#a{`?Uez  
插入排序: @pEO@bbg>  
D+@/x{wX2  
package org.rut.util.algorithm.support; A(_^_p.|  
VAG+y/q  
import org.rut.util.algorithm.SortUtil; hIg, 0B  
/** AU${0#WV_  
* @author treeroot {O3oUE+  
* @since 2006-2-2 e-duZ o  
* @version 1.0 +p%5/ smfs  
*/ /^es0$Co.  
public class InsertSort implements SortUtil.Sort{ 6vp8LNSW  
)b:~kuHi  
/* (non-Javadoc) ?AM 8*w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6=`m   
*/ xs83S.fHg  
public void sort(int[] data) { ^7^bA  
int temp; &xMJ^Nv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JCU3\39}  
} s5Bmv\e.i5  
} ky lrf4=  
} J,77pf!B  
zi DlJ3]^  
} <PuB3PEvV  
1RUbY>K#U  
冒泡排序: (w@MlMk  
6pdl,5[x-  
package org.rut.util.algorithm.support; GJl@ag5h]!  
Xxsnpb>  
import org.rut.util.algorithm.SortUtil; 1\.zOq#  
%?9r(&  
/** ~IJZM`gN  
* @author treeroot {dr&46$p  
* @since 2006-2-2 >[P7Zlwv4  
* @version 1.0 tX`[6`  
*/ h/+I-],RF  
public class BubbleSort implements SortUtil.Sort{ j*Wh;I+h  
7)6Yfa]I%  
/* (non-Javadoc) 94k)a8-!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K1wN9D{t'  
*/ ek.WuOs  
public void sort(int[] data) { qzbkxQu]g  
int temp; :"+UG-S$6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ bCx1g/   
if(data[j] SortUtil.swap(data,j,j-1); j7HlvoZV  
} +` Y ?-  
} oJ;O>J@c  
} E{]|jPdr  
} &#my #u^O;  
sz2SWk^&  
} 5`{;hFl  
[#*?uu+ jK  
选择排序: ^@5ui;JV  
'V9aB5O&  
package org.rut.util.algorithm.support; j'Q-*-3  
?`*-QG}  
import org.rut.util.algorithm.SortUtil; )s7Tv#[  
Kac j  
/** 9xS`@ "`  
* @author treeroot Y1ilH-8  
* @since 2006-2-2 $^D(%  
* @version 1.0 V1b_z  
*/ 3L%r_N*a  
public class SelectionSort implements SortUtil.Sort { E `j5y(44  
lXk-86[M  
/* "M#`y!__  
* (non-Javadoc) HF=C8ZtlL  
* ]! J3?G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sluZ-,zE  
*/ hz|z&vyP  
public void sort(int[] data) { A%8`zR  
int temp; 6l]?%0[*  
for (int i = 0; i < data.length; i++) { IEr`6|X  
int lowIndex = i; T]Td4T!  
for (int j = data.length - 1; j > i; j--) { 2?7hUaHX  
if (data[j] < data[lowIndex]) { <7-,`   
lowIndex = j; DW%K'+@M  
} |3lAye,t)a  
} f(MHU   
SortUtil.swap(data,i,lowIndex); -/7=\kao%  
} ]4Yb$e`  
} a1sLRqo8  
e%0#"6}  
} hA1hE?c`  
xjk|O;ak  
Shell排序: Dt'e<d Is  
sU_4+Mk  
package org.rut.util.algorithm.support; 1Y"qQp  
ao5yW;^y  
import org.rut.util.algorithm.SortUtil; <WKz,jh  
`lh?Z3W  
/** $ 5-2 cL  
* @author treeroot T:~W.3  
* @since 2006-2-2 G`lhvpifG  
* @version 1.0 ^^Q32XC,  
*/ w8#>xV^~  
public class ShellSort implements SortUtil.Sort{ )w?$~q  
kQ'xs%Fw  
/* (non-Javadoc) 5*za]   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9 @*>$6  
*/ [>9"RzEl  
public void sort(int[] data) { 'xI+kyu  
for(int i=data.length/2;i>2;i/=2){ OxGCpbh*7o  
for(int j=0;j insertSort(data,j,i); g UAPjR  
} >@e%,z  
} ZUI9[A?  
insertSort(data,0,1); 'R5l =Wf  
} MW@b ;=(  
x(N} ^Hu  
/** ^M5uLm-_s  
* @param data eV+wnE?SB5  
* @param j J` --O(8Ml  
* @param i ZoReyY2  
*/ 4n)Mx*{  
private void insertSort(int[] data, int start, int inc) { l8lR5<  
int temp; G'C^C[_W  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &L`p4AZ  
} {#Cm> @')  
} $K6`Q4`  
} ):EXh#  
Xn'>k[}<k  
} <rmV$_  
buyz>IC P  
快速排序: 1Nu`@)D0  
\)kAhKtG  
package org.rut.util.algorithm.support; Px&Mi:4tG  
Q</HFpE  
import org.rut.util.algorithm.SortUtil; I _G;;GF  
]J]p:Y>NL  
/** +N&(lj  
* @author treeroot $ {eh52)`  
* @since 2006-2-2 <bppu>&  
* @version 1.0 8gm[Q[  
*/ t ?'/KL  
public class QuickSort implements SortUtil.Sort{ l Nto9  
(W/UR9x)|d  
/* (non-Javadoc) Ap9w H[H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fa^]\:  
*/  Jl,x~d  
public void sort(int[] data) { nE%qm -  
quickSort(data,0,data.length-1); <L#r6y~H  
} 3iL&;D  
private void quickSort(int[] data,int i,int j){ gcF><i6  
int pivotIndex=(i+j)/2; bvTkS EN  
file://swap &" n9,$  
SortUtil.swap(data,pivotIndex,j); lB@K;E@r8  
swbD q  
int k=partition(data,i-1,j,data[j]); >;?97'M  
SortUtil.swap(data,k,j); UeQ% (f  
if((k-i)>1) quickSort(data,i,k-1); 4;{CR. D  
if((j-k)>1) quickSort(data,k+1,j); Rx2|VD  
VH65=9z  
} n K=V`  
/** SJ@_eir\o  
* @param data th|Q NG  
* @param i :\RB ^3;  
* @param j .?:~s8kB  
* @return Z] }@#/ n  
*/ X[6 z  
private int partition(int[] data, int l, int r,int pivot) { ^[akB|#\9  
do{ :gv#_[k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3W0:0I  
SortUtil.swap(data,l,r); Pw.+DA  
} /Vc!N)  
while(l SortUtil.swap(data,l,r); \C|06Bs $  
return l; =p$Wo  
} 8=uljn/  
T+hW9pa)  
} Vtri"G8 aB  
>?<d}9X  
改进后的快速排序: }qPo%T  
'5\1uB PKW  
package org.rut.util.algorithm.support; 5~QB.m,>  
 f;a6ux#  
import org.rut.util.algorithm.SortUtil; |JQ05nb  
f#mpd]e+6  
/** eD0@n :  
* @author treeroot dI|/Xm>  
* @since 2006-2-2 dx}!]_mlZ  
* @version 1.0 1cega1s3xR  
*/ ;'}xD5]  
public class ImprovedQuickSort implements SortUtil.Sort { ktRdf6:~  
]f?LQCTq<b  
private static int MAX_STACK_SIZE=4096; D%v yO_k  
private static int THRESHOLD=10; Fsh-a7Qp  
/* (non-Javadoc) A:Z:&(NtE:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Tq 3L[T5;  
*/ hRu%> =7  
public void sort(int[] data) { 0kfw8Lon  
int[] stack=new int[MAX_STACK_SIZE]; In2D32"F  
_u; UU$~  
int top=-1; 6D<A@DR9J  
int pivot; ^xrR3m*d  
int pivotIndex,l,r; MiRB*eA  
% e(,PL  
stack[++top]=0; nFSa~M  
stack[++top]=data.length-1; lLv0lf  
3-D!ZS&  
while(top>0){ q[lqEc  
int j=stack[top--]; OoNAW<  
int i=stack[top--]; j? A +qk  
<[bDNe["?  
pivotIndex=(i+j)/2; >Ko )Z&j9W  
pivot=data[pivotIndex]; B<+}_3.  
=:5yRP  
SortUtil.swap(data,pivotIndex,j); 1!,lI?j,  
b PiJCX0d  
file://partition qA&N6`  
l=i-1; '|Cs!Zl  
r=j; 5.idC-\  
do{ taI])  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tZ4W]od  
SortUtil.swap(data,l,r); Kh3*\xT  
} *p+%&z_<  
while(l SortUtil.swap(data,l,r); MX  qH  
SortUtil.swap(data,l,j); \9<aCJxN  
/G\-v2iD  
if((l-i)>THRESHOLD){ hO\_RhsRy?  
stack[++top]=i; WCU[]A  
stack[++top]=l-1; C S+6!F]  
} =XyK/$  
if((j-l)>THRESHOLD){ K+PzTGWq^  
stack[++top]=l+1; L1M]ya!l  
stack[++top]=j; IL`5RZi1  
} 7@MVInV9  
u|B\@"0  
} fok OjTE  
file://new InsertSort().sort(data); pX|\J>u)  
insertSort(data); i3N _wv{  
} omY%sQ{)  
/** TRG"fVR  
* @param data &QLCij5:  
*/ Cd]d[{NJ;  
private void insertSort(int[] data) { +#n5w8T)M  
int temp; ^[lg1uMW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OP%h`  
} ,.G6c=pZ  
} \2pJ ]  
} Yw4c`MyL  
lB.P   
} ]g!k'@  
qFt%{~a S  
归并排序: I3p ~pt2  
[K x_%Le  
package org.rut.util.algorithm.support; -Z)$].~|t  
`)!)}PXl  
import org.rut.util.algorithm.SortUtil; ^`Vt<DMT  
R2Lq,(@-  
/** 6D6=5!l  
* @author treeroot *~4w%U4T0  
* @since 2006-2-2 uXyNj2(d.  
* @version 1.0 !G Z2|~f9  
*/ p~DlZk"  
public class MergeSort implements SortUtil.Sort{ i%D/@$\D6  
Ds$FO}KD{  
/* (non-Javadoc) A: 0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l&^9<th  
*/ `%"zq"1`0  
public void sort(int[] data) { E&jngxlN  
int[] temp=new int[data.length]; Y)?4OB=n  
mergeSort(data,temp,0,data.length-1); 5d<-y2!M  
} (SU*fD!t  
s=u0M;A0Q  
private void mergeSort(int[] data,int[] temp,int l,int r){ uFW4A  
int mid=(l+r)/2; v93+<@Z  
if(l==r) return ; _T<ney}Y<  
mergeSort(data,temp,l,mid); M +~guTh  
mergeSort(data,temp,mid+1,r); lTDF5.aE  
for(int i=l;i<=r;i++){ ko>SnE|w#  
temp=data; yI h>j.P  
} av&dGsFP  
int i1=l; 4cTJ$" v  
int i2=mid+1; KSc&6UVz^  
for(int cur=l;cur<=r;cur++){ to(OVg7_  
if(i1==mid+1) Oh5(8.<y  
data[cur]=temp[i2++]; Zj[Bm\ 8  
else if(i2>r) p$0;~1vH  
data[cur]=temp[i1++]; M\DUx5d J,  
else if(temp[i1] data[cur]=temp[i1++]; --dGN.*xb4  
else (3&@c!E  
data[cur]=temp[i2++]; vFV->/u  
} 9L*gxI>  
} KAO}*?  
A|c  :&i  
} Yono8M;9*  
2sk^A ly  
改进后的归并排序: x\3tSP7Vp  
hJrxb<9@Y0  
package org.rut.util.algorithm.support; )jn|+M  
d]} 7]  
import org.rut.util.algorithm.SortUtil; Gg{@]9  
Z"mpE+U*  
/** r9yUye}  
* @author treeroot ~2S`y=*:  
* @since 2006-2-2 axxd W)+K  
* @version 1.0 ^{zwIH2I]  
*/ ouPwhB,bg  
public class ImprovedMergeSort implements SortUtil.Sort { ]9]3=;b>  
{(7Dz*0  
private static final int THRESHOLD = 10; fc+P`r  
 #Z"N\49  
/* m Wsegq4  
* (non-Javadoc) J3}^\k=p"  
* Mw\/gm_3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N?p9h{DG  
*/ L>).o%(R  
public void sort(int[] data) { u> %r(  
int[] temp=new int[data.length]; YL;ZZ2A  
mergeSort(data,temp,0,data.length-1); (t&P. N/  
} (|I0C 'Ki  
qWy{{ A+  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~lzV=c$t  
int i, j, k; tkR^dC  
int mid = (l + r) / 2; *$1*\oCtz  
if (l == r) VVYQIR]!yk  
return; s^AQJ{X  
if ((mid - l) >= THRESHOLD) [t: =%&B  
mergeSort(data, temp, l, mid); ~g;(` g  
else  /d0LD  
insertSort(data, l, mid - l + 1); +O*S>0  
if ((r - mid) > THRESHOLD) ) Z0  
mergeSort(data, temp, mid + 1, r); +0^N#0)  
else Yc"G="XP;  
insertSort(data, mid + 1, r - mid); X:j&+d2g0/  
&dbX>u q  
for (i = l; i <= mid; i++) { hkRv0q.'  
temp = data; MztT/31S  
} z,P:i$  
for (j = 1; j <= r - mid; j++) { &julw;E  
temp[r - j + 1] = data[j + mid]; IgLP=mqcWK  
} qusgX;)  
int a = temp[l]; }zlvs a+  
int b = temp[r]; 5\S)8j `8  
for (i = l, j = r, k = l; k <= r; k++) { {>5z~OV  
if (a < b) { "3Ag+>tuRW  
data[k] = temp[i++]; wAVO%8u  
a = temp; #v89`$#`2  
} else { Ts}5Nk8%  
data[k] = temp[j--]; deda=%w0  
b = temp[j]; :>Z0Kb}7  
} #Ru+|KL  
} AZI%KM[  
} ~.VWrHC  
.J&NM(qeZ  
/** RRV@nDf   
* @param data jQ%}e"  
* @param l :* /<eT_  
* @param i \7$m[h {l  
*/ 1[} =,uaM  
private void insertSort(int[] data, int start, int len) { Kcsje_I-M  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); v9x $`  
} YV. *8'*  
} z]gxkol\  
} ^Ac0#oX]M  
} JBeC\ \QX  
RLw=y{%p  
堆排序: `w[0q?}"`  
_&19OD%  
package org.rut.util.algorithm.support; K{x<zv&,  
NV36Q^Am[  
import org.rut.util.algorithm.SortUtil; `axNeqM  
N95"dNZE  
/** t=xO12Z  
* @author treeroot NO`LSF  
* @since 2006-2-2 c ?V,a`6  
* @version 1.0 }1:jM_H)k  
*/ ;s9!ra:3  
public class HeapSort implements SortUtil.Sort{ ;Zw!  
?rk3oa-  
/* (non-Javadoc) L7X._XBO[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AH`tkPd  
*/ 31w?bx !Pp  
public void sort(int[] data) { wW6?.}2zU  
MaxHeap h=new MaxHeap(); w{I60|C]*  
h.init(data); 4JU#3  
for(int i=0;i h.remove(); 0}Kl47}aD  
System.arraycopy(h.queue,1,data,0,data.length); }b)?o@9}:  
} {Y` 0}  
rouD"cy  
private static class MaxHeap{ +\"@2mOH{+  
@2YO_rL[  
void init(int[] data){ B&-;w_K  
this.queue=new int[data.length+1]; v@Otp  
for(int i=0;i queue[++size]=data; qW;nWfkYC  
fixUp(size); >+#TsX{  
} wUh'1D<(r  
} \n`UkxZn+  
~ Z%>N  
private int size=0; Y5c( U)R8  
b]hRmW  
private int[] queue; Vxo3RwmR  
IW6;ZDP  
public int get() { }eEF/o  
return queue[1]; %QwMB`x  
} '9{H(DA  
Kqhj=B  
public void remove() { ZZ[5Z =te?  
SortUtil.swap(queue,1,size--); AGLzA+6M  
fixDown(1); {3_M&$jN  
} zT!JHG  
file://fixdown <9\_b 6  
private void fixDown(int k) { luat1#~J  
int j; @ mt v2P`  
while ((j = k << 1) <= size) { (a&.Ad0{  
if (j < size %26amp;%26amp; queue[j] j++; M?)>, !Z)  
if (queue[k]>queue[j]) file://不用交换 Z|'tw^0e5  
break; "84.qgYaG  
SortUtil.swap(queue,j,k); ?y ]3kU  
k = j; :S~XE  
} @@SG0YxZ  
} R0oP##]  
private void fixUp(int k) { xqb I~jV#  
while (k > 1) { He"> kJx  
int j = k >> 1; 4A|5eg9N  
if (queue[j]>queue[k]) Yw?%>L  
break; ZLE4 XB]  
SortUtil.swap(queue,j,k); Xa9G;J$  
k = j; M ;\K+,  
} v,Ep2$  
} xCoQ>.4p  
# ?}WQP!  
} 0BxO75m}o  
.$99/2[90  
} /SlCcozFL~  
R^%7|  
SortUtil: ~y B[}BPf  
CFRo>G  
package org.rut.util.algorithm; <Ni]\-*  
;<ed1%Le,  
import org.rut.util.algorithm.support.BubbleSort; :t\PYDp1  
import org.rut.util.algorithm.support.HeapSort; KZ/}Iy>As  
import org.rut.util.algorithm.support.ImprovedMergeSort; @-!w,$F)%d  
import org.rut.util.algorithm.support.ImprovedQuickSort; 6M612   
import org.rut.util.algorithm.support.InsertSort; 7v%~^l7:x  
import org.rut.util.algorithm.support.MergeSort; ) ae/+Q8  
import org.rut.util.algorithm.support.QuickSort; crZ\:LeJ  
import org.rut.util.algorithm.support.SelectionSort; - bFz  
import org.rut.util.algorithm.support.ShellSort; 3<'SnP3mY  
U{i9h6b"18  
/** pm3?  
* @author treeroot j&Z:|WniK  
* @since 2006-2-2 el+euOV  
* @version 1.0 ==UH)o`?8  
*/ B1*%pjy  
public class SortUtil { H^'*F->BA  
public final static int INSERT = 1; urXM}^  
public final static int BUBBLE = 2; i~ zL,/O8  
public final static int SELECTION = 3; ]%shs  
public final static int SHELL = 4; LB2 2doW  
public final static int QUICK = 5; !C#q  
public final static int IMPROVED_QUICK = 6; auL?Hb  
public final static int MERGE = 7; Bv3?WW  
public final static int IMPROVED_MERGE = 8; h2h$UZIv  
public final static int HEAP = 9; ?z Ms;  
rpDH>Hzq  
public static void sort(int[] data) { mP3:Fc _G  
sort(data, IMPROVED_QUICK); )M'#l<9B  
} ^t9"!K  
private static String[] name={ HZfcLDrO  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" V `@@ufU}  
}; 4y%N(^  
y5+-_x,  
private static Sort[] impl=new Sort[]{ B6$s*SXNp  
new InsertSort(), 2{@: :JZ  
new BubbleSort(), )h>Cp,|{  
new SelectionSort(), f[h=>O  
new ShellSort(), }ndH|,  
new QuickSort(), A+;]# 1y(D  
new ImprovedQuickSort(), \*d@_oQ$  
new MergeSort(), I?l*GO+pz  
new ImprovedMergeSort(), 0+cRUH9Ew  
new HeapSort() o` ,&yq.  
}; kTs)u\r.  
|Q.?<T:wt=  
public static String toString(int algorithm){ K6!`b( v#  
return name[algorithm-1]; -D{~7&  
} >.J68 x  
/M B0%6m  
public static void sort(int[] data, int algorithm) { r`28fC  
impl[algorithm-1].sort(data); 1sn!!  
} HT kce,dQ  
.eq-i>  
public static interface Sort { L-G186B$r  
public void sort(int[] data); !>9*$E |  
} B'atwgI0  
YgdoQBQ  
public static void swap(int[] data, int i, int j) { Q.M3rRh  
int temp = data; <~X=6  
data = data[j]; =NyzX&H6  
data[j] = temp; P,D >gxl  
} -[Zau$;J<  
} I2K52A+  
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