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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。 9=Y-w s  
插入排序: 1)H+iN|im/  
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package org.rut.util.algorithm.support; /z`LB  
K`D>G<  
import org.rut.util.algorithm.SortUtil; }~yhkt5K  
/** G,%R`Xns  
* @author treeroot G|v{[>tr  
* @since 2006-2-2 rD fUTfv|Q  
* @version 1.0 B xq(+^T  
*/ ^lf{IM-Y  
public class InsertSort implements SortUtil.Sort{ o|$l+TC  
e%SQ~n=H 9  
/* (non-Javadoc) Q % )fuI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,{=#  
*/ < OCy  
public void sort(int[] data) { eVn]/.d  
int temp; #D&eov?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =rGjOb3+  
} pvD\E  
} SVo:%mX  
} U)o(}:5xF  
*#w+*ywVZH  
} C8%q?.nH=  
w>J|416  
冒泡排序: GeD^-.^  
`~F=  
package org.rut.util.algorithm.support; *{/BPc0*  
txw:m*(%  
import org.rut.util.algorithm.SortUtil; 0ERA(=w5  
QGs\af  
/** ~sx?aiO  
* @author treeroot 3[amCKel  
* @since 2006-2-2 Z`Rrv$M!  
* @version 1.0 Nyip]VwMJ  
*/ [}}?a   
public class BubbleSort implements SortUtil.Sort{ y}Oc^Fc  
3{O^q/R  
/* (non-Javadoc) ' cR||VX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +:+q,0~*]  
*/ ^9UKsy/q  
public void sort(int[] data) { }vgeQh-G  
int temp; uzr(gFd  
for(int i=0;i for(int j=data.length-1;j>i;j--){ TFjb1 a,)  
if(data[j] SortUtil.swap(data,j,j-1); %7 7v'Pz1  
} l03{ ezJk[  
} bj=kqO;*O  
} Y92 w L}  
} 4"U/T 1&  
j}ywdP`a  
} Q$^oIFb  
pX `BDYg.  
选择排序: w3WBgH  
slaYr`u  
package org.rut.util.algorithm.support; #?DwOUw  
bz<f u  
import org.rut.util.algorithm.SortUtil; <F{EZ Ii  
).0klwfV  
/** B+:/!_  
* @author treeroot i=jwk_y  
* @since 2006-2-2 | vL0}e  
* @version 1.0 pyJY]"UHVE  
*/ E<]O,z;F  
public class SelectionSort implements SortUtil.Sort { agp`<1h9  
DybuLB$f  
/* +}[M&D  
* (non-Javadoc) #q#C_"  
* Au~l O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H]As2$[  
*/ 8w /$!9[  
public void sort(int[] data) { 3}~.#`QeY  
int temp; wr I66R}@  
for (int i = 0; i < data.length; i++) { (?4m0Sn>#h  
int lowIndex = i; .5*5S[  
for (int j = data.length - 1; j > i; j--) { jwhc;y  
if (data[j] < data[lowIndex]) { dxfF.\BFDn  
lowIndex = j; |C"(K-do  
} =z#6mSx|W  
} BQTZt'p  
SortUtil.swap(data,i,lowIndex); |Lf>Z2E  
} "sh*,K5x|  
} 7vZtEwC)n  
:+#$=4  
} q(xr5iuP_  
VZF;  
Shell排序: n.is+2t  
AH-B/c5  
package org.rut.util.algorithm.support; S\5%nz \  
t$~CLq5ad  
import org.rut.util.algorithm.SortUtil; NhJ]X cfP8  
U1nObA  
/** C)Ep}eHjf_  
* @author treeroot %x{jmZ$}  
* @since 2006-2-2 o_ng{SL  
* @version 1.0 F/p/&9  
*/ -@bOFClE  
public class ShellSort implements SortUtil.Sort{ 6.5E d-  
s R/z)U_  
/* (non-Javadoc) O?,Grn%'.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pa)'xfQ$Y6  
*/ o0ky]9 P  
public void sort(int[] data) { 5?l8;xe`{f  
for(int i=data.length/2;i>2;i/=2){ 9B3+$uP  
for(int j=0;j insertSort(data,j,i); tBU n KPT  
} %vn"tp  
} |Yb]@9 >vn  
insertSort(data,0,1); 4, EX2  
} ^Mvgm3hg  
6sjd:~J:  
/** cvOCBg38BH  
* @param data ' _ZiZ4O  
* @param j T8^`<gr.  
* @param i Ob!NC&  
*/ 2nra@  
private void insertSort(int[] data, int start, int inc) { VN3 [B eH  
int temp; Z-%zR'-?*  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 65]>6D43  
} *? V boyU  
} ) KvGJo)("  
} fM/~k>wl  
/aV;EkyO,  
} 5]f6YlJZ  
?kM2/a"{G  
快速排序: 5nV IC3N+1  
<S ae:m4  
package org.rut.util.algorithm.support; Tfq7<<0$N  
+h ]~m_O  
import org.rut.util.algorithm.SortUtil; N =T 0Td  
Kj53"eW  
/** w`YN#G  
* @author treeroot h-.xx 4D  
* @since 2006-2-2  ^t}1 $H  
* @version 1.0 9QP-~V{$  
*/ :_8Nf1B+T  
public class QuickSort implements SortUtil.Sort{ v`r![QpYf  
!P8Y(i  
/* (non-Javadoc) "%I<yUP]U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]A&pX AM  
*/ t 7-6A  
public void sort(int[] data) { I|x? K>  
quickSort(data,0,data.length-1); $sxRRe m{?  
} sEymwpm9  
private void quickSort(int[] data,int i,int j){ YMn*i<m  
int pivotIndex=(i+j)/2; T{So 2@_&  
file://swap yQcIfl]f  
SortUtil.swap(data,pivotIndex,j); 1SF8D`3  
0fJz[;dV>n  
int k=partition(data,i-1,j,data[j]); &K*Kr=9N  
SortUtil.swap(data,k,j); Np"~1z.(b  
if((k-i)>1) quickSort(data,i,k-1); A('o &H  
if((j-k)>1) quickSort(data,k+1,j); ;,lFocGv  
Y{d-k1?s5  
} "l 8YD&q  
/** w2H^q3*  
* @param data icK$W2<8mg  
* @param i =4[ U<opP  
* @param j 4iDqd  
* @return XEBeoOX/  
*/ dI+Y1Vq  
private int partition(int[] data, int l, int r,int pivot) { _]v@Dq VP  
do{ x,NV{uG$n  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4 _P6P  
SortUtil.swap(data,l,r); 2#(dfEAy  
} 6]r#6c %  
while(l SortUtil.swap(data,l,r); w8D6j%C  
return l; :al ,zxs  
} B3 |G&Kg  
Xhs*nt%l  
} -}1TT@  
MWv(/_b  
改进后的快速排序: od)ssL&E~  
[]jbzVwS2  
package org.rut.util.algorithm.support; F'-,Ksn  
L1#_  
import org.rut.util.algorithm.SortUtil; s:K'I7_#@  
JU#m?4g  
/** 'gtcy  
* @author treeroot cT5BBR   
* @since 2006-2-2 bkuJN%  
* @version 1.0 ^[&,MQU{7  
*/ eI9#JM|2  
public class ImprovedQuickSort implements SortUtil.Sort { bcgXpP  
l(9AwVoAR|  
private static int MAX_STACK_SIZE=4096; ]D&U} n  
private static int THRESHOLD=10; Ft^X[5G4L  
/* (non-Javadoc) Jcy+(7lE)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fg7  
*/ q/^?rd  
public void sort(int[] data) { Zts1BWL[  
int[] stack=new int[MAX_STACK_SIZE]; ?bPW*A82{q  
Y(u`K=*  
int top=-1; )Ma/] eZ^I  
int pivot; *xjP^y":  
int pivotIndex,l,r; .}5qi;CA  
~h:(9q8NLC  
stack[++top]=0; BNgm+1?L  
stack[++top]=data.length-1; F`La_]f?b\  
|- <72$j  
while(top>0){ T`bUBrK6g`  
int j=stack[top--]; E{P94Phv  
int i=stack[top--]; OdpHF~(Y/  
7p- RPC  
pivotIndex=(i+j)/2; -'F27])  
pivot=data[pivotIndex]; ,D'm#Fti  
.D;6 r4S  
SortUtil.swap(data,pivotIndex,j); 9}_'  
i;atYltEJ2  
file://partition )HcLpoEi  
l=i-1; FTr'I82m(  
r=j; AhkDLm+  
do{ b0/YX@  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); AB{zkEuK  
SortUtil.swap(data,l,r); 2OpkRFFa  
} Be9,m!on  
while(l SortUtil.swap(data,l,r); G`;\"9t5h  
SortUtil.swap(data,l,j); m[z $y  
c39j|/!;Y  
if((l-i)>THRESHOLD){ B<ncOe  
stack[++top]=i; Y/5(BK)  
stack[++top]=l-1; vN:!{)~z  
} $o0.oY#  
if((j-l)>THRESHOLD){ IT7],pM  
stack[++top]=l+1; ^?wR{q"8  
stack[++top]=j; M.xZU\'ty  
} D2GF4%|  
F v*QcB9K  
} ]Ok'C"V(j  
file://new InsertSort().sort(data); (S4HU_,88  
insertSort(data); d"@ /{O^1  
} Nw*F1*v`  
/** 3yw$<lm  
* @param data CiGXyhh  
*/ `!spi=f  
private void insertSort(int[] data) { =av0a !  
int temp; p/88mMr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8rx|7  
} 5F!Qn\{u{  
} `*elzW  
} j0j!oj)7I  
[?hvx}  
} 1Q!kk5jE  
rB{w4  
归并排序: cly}[<w!  
7#W]Qj  
package org.rut.util.algorithm.support; MV??S{^4  
~o/k?l  
import org.rut.util.algorithm.SortUtil; jO/cdLKX(  
^_i)XdPU  
/** b;{"@b,Y  
* @author treeroot }#-@5["-X  
* @since 2006-2-2 `N&*+!O%  
* @version 1.0 $2,tT;50g  
*/ f,F1k9-1!  
public class MergeSort implements SortUtil.Sort{ W/%hS)75  
[& Z- *a  
/* (non-Javadoc) 7{(UiQbf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KK5;6b  
*/ fm@Pa} ,  
public void sort(int[] data) { _5H~1G%q  
int[] temp=new int[data.length]; Y9|!= T%  
mergeSort(data,temp,0,data.length-1); 4'=Q:o*w`  
} 8zpzVizDG  
>~Xe` }'  
private void mergeSort(int[] data,int[] temp,int l,int r){ Yku6\/^  
int mid=(l+r)/2; M.6uWwzQR  
if(l==r) return ; -KV,l  
mergeSort(data,temp,l,mid); 0j;ZPqEf3  
mergeSort(data,temp,mid+1,r); w/O'&],x  
for(int i=l;i<=r;i++){ E N%{ $  
temp=data; ;Ce?f=4  
} e[?,'Mp9  
int i1=l; h]L.6G|hEN  
int i2=mid+1; BWQ`8  
for(int cur=l;cur<=r;cur++){ SMIDW}U2S  
if(i1==mid+1) <F(S_w62  
data[cur]=temp[i2++]; .d}yQ#5z  
else if(i2>r) 4sntSlz)~k  
data[cur]=temp[i1++]; 7Mq{Py1  
else if(temp[i1] data[cur]=temp[i1++]; Il9xNVos#  
else +uSp3gE"  
data[cur]=temp[i2++]; CQNMCYjg(R  
} iLIb-d?!a&  
} vPGUE`!D+  
~nhO*bs}7{  
} K!Fem6R  
/&Cq-W  
改进后的归并排序: Sh1$AGm  
$ZGup"z)  
package org.rut.util.algorithm.support; jrFPd  
/FE+WA}r  
import org.rut.util.algorithm.SortUtil; #*/nUbsg  
=1dczJHV  
/** wn?oHz*  
* @author treeroot #O !2  
* @since 2006-2-2 m~*qS4  
* @version 1.0 ]Q ]y*  
*/ Tx~w(A4:  
public class ImprovedMergeSort implements SortUtil.Sort { Uz_p-J0  
717THci3Y  
private static final int THRESHOLD = 10; Wz=& 0>Mm_  
Dk a8[z7  
/* 1HKA`]D"p  
* (non-Javadoc) 0?8>{!I  
* R[v0T/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9#9bm  
*/ 0RtZTCGO  
public void sort(int[] data) { )I3E  
int[] temp=new int[data.length]; MKvmzLh$)  
mergeSort(data,temp,0,data.length-1); g*My1+J!  
} Nwt[)\W `  
&gruYZGK  
private void mergeSort(int[] data, int[] temp, int l, int r) { V\x'w*FP  
int i, j, k; 2,q*8=?{6P  
int mid = (l + r) / 2; oA[`| ji  
if (l == r) dp^PiyL  
return; gJr)z7W'8  
if ((mid - l) >= THRESHOLD) D{Nd2G  
mergeSort(data, temp, l, mid); n]Yz<#  
else }a[]I%bu 2  
insertSort(data, l, mid - l + 1); XWAIW= .  
if ((r - mid) > THRESHOLD) Ewp2 1  
mergeSort(data, temp, mid + 1, r); p?>J86%[  
else z^`4n_(Ygu  
insertSort(data, mid + 1, r - mid); @,e o*  
" Ot%{&:2  
for (i = l; i <= mid; i++) { VD7-;  
temp = data; esA^-$  
} |(*btdqy3  
for (j = 1; j <= r - mid; j++) { 8 <;.[l  
temp[r - j + 1] = data[j + mid]; o.NU"$\?  
} &4|]VOf  
int a = temp[l]; hG.}>(VV  
int b = temp[r]; <Tjhj *  
for (i = l, j = r, k = l; k <= r; k++) { ] 9C)F*r7  
if (a < b) { zA6C{L G3  
data[k] = temp[i++]; z+;$cfN  
a = temp; }wn|2K'  
} else { ?m2FN< S  
data[k] = temp[j--]; nw- -  
b = temp[j]; 4cSs=|m?+  
} !PGCoI  
} { CR`~)v&  
} JS8pN5   
5]]QW3  
/** yW1N&$n  
* @param data i^jM9MAi  
* @param l D*~Q;q>  
* @param i fJ.=,9:<  
*/ AJLzLbV+  
private void insertSort(int[] data, int start, int len) { Z{B[r;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); D$)F X(  
} "?6*W"N9  
} m`fdf>gWp  
} 9NVtvBA  
} [_xOz4`%  
-u%o);B  
堆排序: nt|n[-}  
/];N1  
package org.rut.util.algorithm.support; uc!6?+0h  
,B/TqPP  
import org.rut.util.algorithm.SortUtil; ~h8k4eM  
J+ :3== ,  
/** |>U<EtA"  
* @author treeroot ;:[P/eg  
* @since 2006-2-2 g~K-'Nw  
* @version 1.0 bt=D<YZk  
*/ 8M!9gvcaO  
public class HeapSort implements SortUtil.Sort{ $<Gt^3e  
EB+4]MsD  
/* (non-Javadoc) u"v$[8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "[["naa  
*/ 9mMQ  
public void sort(int[] data) { C'A D[`p  
MaxHeap h=new MaxHeap(); `{"V(YMEV  
h.init(data); Bq~S=bAB>R  
for(int i=0;i h.remove(); otjT ?R2g'  
System.arraycopy(h.queue,1,data,0,data.length); ^8oN~HLZ  
} p + JOUW  
R6;229e  
private static class MaxHeap{ w\d1  
6I=d0m.io  
void init(int[] data){ gPK O-Fsd"  
this.queue=new int[data.length+1]; |Zn,|-iW  
for(int i=0;i queue[++size]=data; 8sDw:wTC  
fixUp(size); X%*BiI  
} M-QQ  
} b9.7j!W  
epk C '  
private int size=0; 8[^b8^  
E]a,2{&8<  
private int[] queue; l3MA&&++KF  
DP*V|)  
public int get() { Sb?v5  
return queue[1]; K~UT@,CS60  
} iuEe#B;!  
PB8U+  
public void remove() { E(S$Q^  
SortUtil.swap(queue,1,size--); L-|7 &  
fixDown(1); ;2BPEo>z9  
}  /*S6/#  
file://fixdown }FV_jJ  
private void fixDown(int k) { P1TTaYu  
int j; 3WkrG.$[b  
while ((j = k << 1) <= size) { ,0Udz0  
if (j < size %26amp;%26amp; queue[j] j++; q}JP;p(#  
if (queue[k]>queue[j]) file://不用交换 9~f RYA*  
break; }236{)DuN  
SortUtil.swap(queue,j,k); |9CPT%A#  
k = j; **9[e[(X  
} K)`l > o1  
} R<h:>.M  
private void fixUp(int k) { "wV7PSbM  
while (k > 1) { uZ1G,9  
int j = k >> 1; "[L+LPET  
if (queue[j]>queue[k]) Jn0L_@  
break; Fok`-U  
SortUtil.swap(queue,j,k); LwQYO'X  
k = j; ~ebm,3?  
} 1RQM-0W,  
}  ,8p-EH  
=cR=E{20  
} 0F 4%Xz  
A:sP%c;  
} v'y<}U  
zq^eL=%:  
SortUtil: 4NFvX4  
]ao%9:P;  
package org.rut.util.algorithm; n)]u|qq  
;x{J45^  
import org.rut.util.algorithm.support.BubbleSort; )hA)`hL F  
import org.rut.util.algorithm.support.HeapSort; uhmSp+%  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]mO7O+  
import org.rut.util.algorithm.support.ImprovedQuickSort; [py/\zkn  
import org.rut.util.algorithm.support.InsertSort; @q" #.?>s  
import org.rut.util.algorithm.support.MergeSort; ]'i}}/}u2  
import org.rut.util.algorithm.support.QuickSort; /LCRi  
import org.rut.util.algorithm.support.SelectionSort; HFj@NRE6  
import org.rut.util.algorithm.support.ShellSort; QbAEW m  
UD]RWN  
/** h5H#xoCXp  
* @author treeroot 9@p+g`o  
* @since 2006-2-2 g7LS  
* @version 1.0 7tT L,Nxe  
*/ .)=j~}\  
public class SortUtil { VelX+|w  
public final static int INSERT = 1; l) )Cvre+  
public final static int BUBBLE = 2; R^4 j0L  
public final static int SELECTION = 3; ( v=Z$#l  
public final static int SHELL = 4; |Tl2r,(+R  
public final static int QUICK = 5; 6x_D0j%^]  
public final static int IMPROVED_QUICK = 6; -v WX L  
public final static int MERGE = 7; TbR Ee;1  
public final static int IMPROVED_MERGE = 8; ^w}BXVn  
public final static int HEAP = 9; UbwD2>  
0_map z  
public static void sort(int[] data) { z"@UNypc,  
sort(data, IMPROVED_QUICK); 8nRxx`U\q  
} r?n3v[B  
private static String[] name={ *3Ci4\Ew  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @z.HyQ_v  
}; 0R?LWm j  
,#=;V"~9  
private static Sort[] impl=new Sort[]{ 2`/p V0  
new InsertSort(), EtvYIfemr  
new BubbleSort(), 5./(n7d_  
new SelectionSort(), Nj4^G ~_  
new ShellSort(), PHn3f;I  
new QuickSort(), G`R2=bb8  
new ImprovedQuickSort(), AqP7UL  
new MergeSort(), XbAoW\D(  
new ImprovedMergeSort(), <NX6m|DD  
new HeapSort() M$GZK'%  
}; Jp`qE  
<Okl.Iz>  
public static String toString(int algorithm){ w=75?3c7F  
return name[algorithm-1]; )eSD5hOI)  
} 7(= 09z  
K~>ESMZ5  
public static void sort(int[] data, int algorithm) { 3/((7O[  
impl[algorithm-1].sort(data); < G:G/  
} ob.=QQQs  
w!^{Q'/,Q  
public static interface Sort { PP)-g0^@  
public void sort(int[] data); iYxpIqWw  
} 5PCKBevV  
+q3E>K9a  
public static void swap(int[] data, int i, int j) { _"%-=^_  
int temp = data; `~3y[j]kO  
data = data[j]; rw ou[QU  
data[j] = temp; sv?Lk4_  
} yY42+%P  
} |nj,]pA  
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