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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。 iXm||?Rnx  
插入排序: >h[!gXL^  
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package org.rut.util.algorithm.support; H|)1T-%  
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import org.rut.util.algorithm.SortUtil; DqMK[N,0  
/** Tb= {g;0 @  
* @author treeroot P\mm8s`f  
* @since 2006-2-2 9i<-\w^$  
* @version 1.0 _o?(t\B9{  
*/ h*KHEg"+  
public class InsertSort implements SortUtil.Sort{ a-E-hX2  
w~U`+2a3  
/* (non-Javadoc) .lBY"W&{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mVK9NK  
*/ |3s&Y`x-D  
public void sort(int[] data) { k4$q|x7+%  
int temp; J=X% xb  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <VU4rk^=  
} NN 6KLbC(  
} :2pBv#\"qk  
} o1WidJ"  
)h0E$*  
} =]QH78\3  
S@g/Tn  
冒泡排序: i5KwYoN  
dl6v <  
package org.rut.util.algorithm.support; F!&pENQ  
7F(F.ut  
import org.rut.util.algorithm.SortUtil; S9NN.dKu  
m_$I?F0  
/** b!X"2'  
* @author treeroot EOX_[ek7  
* @since 2006-2-2 GWInN8.5  
* @version 1.0 ZGpTw[5ql  
*/ qysa!B  
public class BubbleSort implements SortUtil.Sort{ 3Y{)(%I  
pRwGv  
/* (non-Javadoc) paNw5] -  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HS:}! [P  
*/ U[QD!  
public void sort(int[] data) {  aoDD&JE  
int temp; E^ok`wfO  
for(int i=0;i for(int j=data.length-1;j>i;j--){ F>QT|  
if(data[j] SortUtil.swap(data,j,j-1); `f+8WPJPZ  
} d BMe`hM)  
} = b<<5N s  
} N4H+_g|  
} Yc82vSG'  
WYC1rfd=  
} ;:4P'FWm^  
d%lHa??/ h  
选择排序: =*g$#l4  
2d2@J{  
package org.rut.util.algorithm.support; [9O~$! <%  
E,LYS"%_  
import org.rut.util.algorithm.SortUtil; }utNZhJ  
V`\f+Uu  
/** T1Q sW<*j  
* @author treeroot E ;!<Z4  
* @since 2006-2-2 *?bk?*?s  
* @version 1.0 AM[jL'r|  
*/ zNny\Z  
public class SelectionSort implements SortUtil.Sort { )J+{oB[>b  
%A62xnX  
/* 5eOj, [?  
* (non-Javadoc) BY*2yp}7  
* tP`G]BCbt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3_MS'&M  
*/ V[Rrst0yo  
public void sort(int[] data) { +lW}ixt  
int temp; u\XkXS`  
for (int i = 0; i < data.length; i++) { 8pPC 9ew\=  
int lowIndex = i; ^.#X<8hr  
for (int j = data.length - 1; j > i; j--) { < m enABN4  
if (data[j] < data[lowIndex]) { x_<bK$OU  
lowIndex = j; a_{io`h3&  
} vK6ibl0  
} qB F!b0lr  
SortUtil.swap(data,i,lowIndex); R6!cK[e]4  
} 5e)6ua,  
} 2 {e dW+  
r]8x;v1  
} VyWYfPK  
y~ _za(k  
Shell排序: q#99iiG1  
Or+*q91j  
package org.rut.util.algorithm.support; =_RcoG/^~  
<!~1{`n%9J  
import org.rut.util.algorithm.SortUtil; @VC .>  
%{7_E*I@n  
/** F gWkcV6B  
* @author treeroot VU! l50   
* @since 2006-2-2 a|QE *s.  
* @version 1.0 n @ &"+  
*/ *BLe3dok(  
public class ShellSort implements SortUtil.Sort{ 3vdu;W=Sz  
({%oi h  
/* (non-Javadoc) Fm<jg}>MAd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "{A*(.  
*/ ;8*XOC;[  
public void sort(int[] data) { h `\$sT!Z  
for(int i=data.length/2;i>2;i/=2){ U~:N^Sc  
for(int j=0;j insertSort(data,j,i); U!&_mD# c  
} _F`$ d2  
} [ WV@w  
insertSort(data,0,1); +M'aWlPg,  
} rQ~\~g[tP  
1BQ0M{&  
/** I tI0x  
* @param data +@emX$cFV  
* @param j ~u /aOd  
* @param i q=6Cc9FN  
*/ 0R HS]cN  
private void insertSort(int[] data, int start, int inc) { khU6*`lQ  
int temp; YV/>8*i  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v7i^O`{eD?  
} d,c8Hs8  
} K8HIuQ!=  
} E/mubA(&  
?YF${  
} |[S90Gw]  
 hv+|s(  
快速排序: 3 p/b  
"]VDY)  
package org.rut.util.algorithm.support; gi6g"~%@q1  
}p~OCW!  
import org.rut.util.algorithm.SortUtil; 6'xomRpYN  
pheE^jUr  
/** GE1i+.+-.  
* @author treeroot X'fuF2owd  
* @since 2006-2-2 -S"5{N73  
* @version 1.0 >~I#JQ%  
*/ #`W=m N(+k  
public class QuickSort implements SortUtil.Sort{ v(DwU!  
I eG=J4:*  
/* (non-Javadoc) )~ 0}Et l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o:2Q2+d  
*/ ,E\h!/X  
public void sort(int[] data) { OT%0{2c"]  
quickSort(data,0,data.length-1); {?E<](+0  
}  _e%dM  
private void quickSort(int[] data,int i,int j){ Qg(Z{V  
int pivotIndex=(i+j)/2; (` 5FZgN  
file://swap d/3J' (cq  
SortUtil.swap(data,pivotIndex,j); XC[]E)8  
3&'2aW   
int k=partition(data,i-1,j,data[j]); <W>++< -  
SortUtil.swap(data,k,j); *7ZGq(O  
if((k-i)>1) quickSort(data,i,k-1); ^Ye\u1n4  
if((j-k)>1) quickSort(data,k+1,j); GCDwWCxh  
p SHSgd ~&  
} [r)e P({  
/** % Y~>Jl  
* @param data dsJm>U)  
* @param i *LANGQ"2(i  
* @param j w OI^Q~  
* @return -fE.<)m=!  
*/ vCw<G6tD  
private int partition(int[] data, int l, int r,int pivot) { 5%*w<6<_z  
do{ ~ 9GOk;{~&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); L!t@-5~  
SortUtil.swap(data,l,r); "~F3*lk#E  
} <5S@ORN  
while(l SortUtil.swap(data,l,r); 57wFf-P  
return l; { ;s;.  
} ,`k _|//}=  
^/HW$8wEi  
} lbQQtpEKO  
nq"evD5  
改进后的快速排序: ,7W:fwdR  
hi ~}  
package org.rut.util.algorithm.support; o*">KqU`b  
k1)%.pt%  
import org.rut.util.algorithm.SortUtil; H~noJIw#  
H&#{l)  
/** ^$v3eKA  
* @author treeroot e  ^Ds  
* @since 2006-2-2 ]hA,LY f  
* @version 1.0 ,apNwkY  
*/ `K*b?:0lp  
public class ImprovedQuickSort implements SortUtil.Sort { .N,&Uv-  
>nzu],U  
private static int MAX_STACK_SIZE=4096; "wAf. =F  
private static int THRESHOLD=10; oH^(qZ8W  
/* (non-Javadoc) As~(7?]r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -(i(02PX  
*/ 41G5!=i  
public void sort(int[] data) { 5G(3vRX|1  
int[] stack=new int[MAX_STACK_SIZE]; .%}?b~  
s,6`RI%  
int top=-1; Xa," 'r  
int pivot; ~. YWV  
int pivotIndex,l,r; O~!T3APGU  
fH\X  
stack[++top]=0; <A >)[u  
stack[++top]=data.length-1;  8"%RCE  
!M7<BD};  
while(top>0){ K{@3\5<  
int j=stack[top--]; N|mJg[j@7  
int i=stack[top--]; (hB?  
w]u@G-e  
pivotIndex=(i+j)/2; OtJ\T/q,  
pivot=data[pivotIndex]; f$.?$  
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SortUtil.swap(data,pivotIndex,j); K<4Kk3  
}lP;U$  
file://partition BecP T  
l=i-1; :u6JjW[a)  
r=j; !z 53OT!  
do{ b&#DnZcf  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); iCj2"T4TN  
SortUtil.swap(data,l,r); /P:.qtT(  
} Bj Wr5SJ  
while(l SortUtil.swap(data,l,r); (Glr\q]jF\  
SortUtil.swap(data,l,j); IvHh4DU3Z  
zce`\ /:  
if((l-i)>THRESHOLD){ sa1h%<   
stack[++top]=i; {D`'0Z1"  
stack[++top]=l-1; ~1 ~Xfo>  
} mO*^1  
if((j-l)>THRESHOLD){ #>[a{<;Kn  
stack[++top]=l+1; q5x[~]?  
stack[++top]=j; WOLuw%  
} uR;gVO+QC  
GOT1@.Y  
} )yG"^Ulu  
file://new InsertSort().sort(data); }|\d+V2On  
insertSort(data); G(iJi  
} q[3x2sR  
/** <eN_1NTH_  
* @param data @%/]Q<<q  
*/ j}1zdA  
private void insertSort(int[] data) { omSM:f_~  
int temp; )+P]Vf\jH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aE"[5*a  
} Z[Qza13lo  
} r H8@69,B  
} '3 33Ctxy  
&;i "P  
} ;G |i^  
,Lpixnm]  
归并排序: l<g5yYyf  
=,y |00l  
package org.rut.util.algorithm.support; 80b;I|-T,  
NVKC'==0  
import org.rut.util.algorithm.SortUtil; @"-</x3o  
e~l#4{w  
/** ;U9J++\d<A  
* @author treeroot QaIjLc~W  
* @since 2006-2-2 Q=mI 9  
* @version 1.0 _"@CGXu  
*/ `x8J  
public class MergeSort implements SortUtil.Sort{ 'e)^m}:?D  
,`D~py,  
/* (non-Javadoc) t.T UmJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H}hFFI)#Oo  
*/ 3_Cp%~Gi-_  
public void sort(int[] data) { VKp*9%9  
int[] temp=new int[data.length]; fhPkEvJ  
mergeSort(data,temp,0,data.length-1); vhbDb)J  
} 4y:]DC"  
E>b2+;Jv  
private void mergeSort(int[] data,int[] temp,int l,int r){ 9,uhf b^]  
int mid=(l+r)/2; G!w"{Bk?9  
if(l==r) return ; /1N6X.Zb  
mergeSort(data,temp,l,mid); YB<*"HxM)}  
mergeSort(data,temp,mid+1,r); ;Uc0o!1  
for(int i=l;i<=r;i++){ ?eH&'m}-  
temp=data; S$)*&46g  
} >Y7a4~ufko  
int i1=l; ^d}gpin  
int i2=mid+1; &LO"g0w  
for(int cur=l;cur<=r;cur++){ 1 `^Rdi0  
if(i1==mid+1) X cr  =  
data[cur]=temp[i2++]; <8,o50`B  
else if(i2>r) >r`b_K  
data[cur]=temp[i1++]; dzLQI}89+k  
else if(temp[i1] data[cur]=temp[i1++]; \B F*m"lz  
else 1"Z@Q`}  
data[cur]=temp[i2++]; 4iA Z+l5&  
} 'c2W}$q  
} De7T s  
A?_=K  
} ZkL8e  
E)Gw0]G  
改进后的归并排序: 2M#M"LHo  
OsBo+fwT  
package org.rut.util.algorithm.support; <,o>Wx*1C  
W} WI; cI  
import org.rut.util.algorithm.SortUtil; Lbe\@S   
.2d9?p3Y  
/** :w}{$v}#D;  
* @author treeroot T134ZXqqz  
* @since 2006-2-2 ojYbR<jn9  
* @version 1.0 JB!:JML  
*/ Vk< LJ S  
public class ImprovedMergeSort implements SortUtil.Sort { |*Z$E$k:  
)u))n#P  
private static final int THRESHOLD = 10; 7Q\|=$2  
XE^)VLH:  
/*  _zlqtO  
* (non-Javadoc) zvABU+{jD  
* BA\/YW @  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u]}s)SmDk  
*/ l/;X?g5+  
public void sort(int[] data) { :0Z^uuk`gq  
int[] temp=new int[data.length];  "KcA  
mergeSort(data,temp,0,data.length-1); c/c$D;T  
} <: &*  
dJ$"l|$$  
private void mergeSort(int[] data, int[] temp, int l, int r) { ga?*DI8w  
int i, j, k; d%l{V6  
int mid = (l + r) / 2; $kR N h6  
if (l == r) OL4z%mDZi  
return; %$%& m1Y  
if ((mid - l) >= THRESHOLD) {U&.D [{&  
mergeSort(data, temp, l, mid); vJAZ%aW  
else !9 fz(9  
insertSort(data, l, mid - l + 1); Gt9&)/#  
if ((r - mid) > THRESHOLD) IV\J3N^  
mergeSort(data, temp, mid + 1, r); 2WUT/{:X  
else Uj&W<'I  
insertSort(data, mid + 1, r - mid); xsWur(>]  
\*=7#Vd  
for (i = l; i <= mid; i++) { 'SQG>F Uy  
temp = data; ,{\Bze1fn  
} nUkaz*4qU  
for (j = 1; j <= r - mid; j++) { '_|h6<.k[  
temp[r - j + 1] = data[j + mid];  XL7h}  
} lu Q~YjH  
int a = temp[l]; aF03a-qw<  
int b = temp[r]; cuOvN"nuNj  
for (i = l, j = r, k = l; k <= r; k++) { %Uz(Vd#K  
if (a < b) { =8U&[F  
data[k] = temp[i++]; R<B7K?SxV~  
a = temp; 7GDHz.IX  
} else { GhPK-+"X  
data[k] = temp[j--]; ,3nN[)dk  
b = temp[j]; OY?y^45y  
} JN7k2]{  
} <&)v~-&O  
} @&[T _l  
Y@PI {;!  
/** /x3/Ubmz~x  
* @param data {Zp\^/  
* @param l hYawU@R  
* @param i Ef<b~E@  
*/ \QmCeB  
private void insertSort(int[] data, int start, int len) { IIy~[4dW  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~'R(2[L!;  
} S_~z-`;h!  
} qCv20#!"|  
} :;t #\%L/  
} uc|45Zxt  
?yh}/T\qp  
堆排序: *L!!]Q2c  
MDF%\Sx  
package org.rut.util.algorithm.support; g2unV[()_  
=J1rlnaaEL  
import org.rut.util.algorithm.SortUtil; ~a xjjv  
CKA;.sh  
/** Rp$}YN  
* @author treeroot EI\9_}@,  
* @since 2006-2-2 mFHH515  
* @version 1.0 `5H$IP1XhA  
*/ `"%T=w  
public class HeapSort implements SortUtil.Sort{ *OQG 4aWy  
4lZ$;:Jg  
/* (non-Javadoc) q%ow/!\;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $0arz{Oh  
*/ ,^S@EDq  
public void sort(int[] data) { !0N7^Z"gtz  
MaxHeap h=new MaxHeap(); 37;$-cFE  
h.init(data); jM\*A#Jo5  
for(int i=0;i h.remove(); vVL@K,q  
System.arraycopy(h.queue,1,data,0,data.length); `9 {mr<  
} [e1S^pI  
s|D>-  
private static class MaxHeap{ LdB($4,  
3"rzb]=R  
void init(int[] data){ 1h.)#g?{  
this.queue=new int[data.length+1]; }.z&P'  
for(int i=0;i queue[++size]=data; 7.j[a*^  
fixUp(size); .; &# )l  
} '?({;/L  
} Znetzm=0  
8/K!SpM*d  
private int size=0; *28pRvY:b  
`_&Vt=7lG  
private int[] queue; RxQh2<?  
 YBnA+l*  
public int get() { itzyCw2|#  
return queue[1]; zq%D/H6J,  
} frBX{L  
!Kv@\4  
public void remove() { &7_Qd4=08w  
SortUtil.swap(queue,1,size--); Ja ,Cvt  
fixDown(1); _!|/ ;Nk  
} pJ ?~fp  
file://fixdown Pzb|t+"$  
private void fixDown(int k) { MCdx?m3]  
int j; WKSPBT;  
while ((j = k << 1) <= size) { "]\+?  
if (j < size %26amp;%26amp; queue[j] j++; mA{~Pp Sb  
if (queue[k]>queue[j]) file://不用交换 R N@ctRS  
break; h`3eu;5)  
SortUtil.swap(queue,j,k); =w$}m_AM  
k = j; w}CmfR  
} 5^j45'%I  
} xzx$TUL  
private void fixUp(int k) { T,$WlK Wj  
while (k > 1) { kCXdGhb  
int j = k >> 1; `l*;t`h  
if (queue[j]>queue[k]) I<A6Z&*un  
break; ?ByM[E$  
SortUtil.swap(queue,j,k); xz:J  
k = j; y_.!!@,  
} 2./ 3 \n2  
} +Y+Y6Ac[}  
r:]1 O*  
} *& m#qEv  
t3+Py7qv  
} TXZv2P9  
\Vl`YYjZ  
SortUtil: )*:`':_a  
Dwl3 Cj  
package org.rut.util.algorithm; pBw0"ff  
S~Id5T:,  
import org.rut.util.algorithm.support.BubbleSort; ~ Uo)0  
import org.rut.util.algorithm.support.HeapSort; ]Ta N{"  
import org.rut.util.algorithm.support.ImprovedMergeSort; 72,rFYvpK  
import org.rut.util.algorithm.support.ImprovedQuickSort; EKp@9\XBC  
import org.rut.util.algorithm.support.InsertSort; &Ni`e<mP  
import org.rut.util.algorithm.support.MergeSort; @UdfAyL  
import org.rut.util.algorithm.support.QuickSort; lqb/eN9(t  
import org.rut.util.algorithm.support.SelectionSort; sUYxT>R  
import org.rut.util.algorithm.support.ShellSort; ,<2DL p%%D  
1J' 3g  
/** "al `$%(  
* @author treeroot )7:J[0ZiQ  
* @since 2006-2-2 o`.R!wm:W  
* @version 1.0 6_4D9 W  
*/ <`0h|m'U  
public class SortUtil { i9=&;_z  
public final static int INSERT = 1; $O^v]>h  
public final static int BUBBLE = 2; X*L;.@xA  
public final static int SELECTION = 3; &  =/  
public final static int SHELL = 4; ti &J  
public final static int QUICK = 5; 8?FbtBAn  
public final static int IMPROVED_QUICK = 6; vaon{2/I  
public final static int MERGE = 7; W}|'#nR  
public final static int IMPROVED_MERGE = 8; tbO H#|  
public final static int HEAP = 9; [7 YPl9  
IMk'#)  
public static void sort(int[] data) { ,[A'tUl _  
sort(data, IMPROVED_QUICK); CwX Z  
} ]#.]/f >-  
private static String[] name={ R CkaJ3  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" d9n?v)<v  
}; b<]n%Q'n  
*~/OOH$"  
private static Sort[] impl=new Sort[]{ hTbI -u7BF  
new InsertSort(), !'Q -yoHKD  
new BubbleSort(), ?,yj")+  
new SelectionSort(), .Udj@{  
new ShellSort(), VS&TA>  
new QuickSort(), b^[F""!e  
new ImprovedQuickSort(), Iz[@^IUx=  
new MergeSort(), jM:Y' l]  
new ImprovedMergeSort(), mYU9 trHV  
new HeapSort() g&n)fF  
}; FaBqj1O1  
X<R?uI?L  
public static String toString(int algorithm){ jVH|uX"M5Y  
return name[algorithm-1]; [V 8{b{  
} Nl' )l"  
"}Me}S<  
public static void sort(int[] data, int algorithm) { .] `f,^v<c  
impl[algorithm-1].sort(data); @JW@-9/  
} 4ikdM/  
B&N/$= 5m  
public static interface Sort { C4}*) a  
public void sort(int[] data); (|d34DOJ  
} ai*f F  
i>[_r,-\[  
public static void swap(int[] data, int i, int j) { u=YX9Mo!  
int temp = data; vF?5].T  
data = data[j]; [ 4;Ii  
data[j] = temp; qp}Ma8+  
} dik9 >*"|o  
} ` \A(9u*  
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