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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。 ^@Y9!G=  
插入排序: !8Y3V/)NU  
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package org.rut.util.algorithm.support; Ga?UHw~  
k3 /4Bt G/  
import org.rut.util.algorithm.SortUtil; wvX"D0eVn  
/** "V:XhBG?  
* @author treeroot Iw*C*%}[Z  
* @since 2006-2-2 e00RT1L  
* @version 1.0 Z{ %Uw;d  
*/ v$Dh.y  
public class InsertSort implements SortUtil.Sort{ ^X$ I=ro  
wNbTM.@  
/* (non-Javadoc) P2|}*h5(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g\qX7nIH?  
*/ (\tq<h0  
public void sort(int[] data) { FfjC M7?  
int temp; O2$!'!hz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }il%AAI9}r  
} cS5w +`,L  
} ^`/V i  
} "wF*O"WQo  
Ag<4r  
} c.\:peDk  
Vj29L?3  
冒泡排序: [KD}U-(Wg  
M Ey1~h/  
package org.rut.util.algorithm.support; A?\h|u<  
D`8E-Bq  
import org.rut.util.algorithm.SortUtil; ;g6 nHek  
V02309Y  
/** <%he  o  
* @author treeroot rT o%=0P  
* @since 2006-2-2 1X Q87~  
* @version 1.0 YBR)s\*  
*/ vsjM3=  
public class BubbleSort implements SortUtil.Sort{ gp%tMT I1  
Q4#\{" N!  
/* (non-Javadoc) #T Z!#,q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3SmqXPOw  
*/ 7Zhli Y1  
public void sort(int[] data) { |_!PD$i-  
int temp; ER/\ +Z#Z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ B>1M$3`E  
if(data[j] SortUtil.swap(data,j,j-1); 0H; "5  
} |WQD=J%~(  
} oJhEHx[f  
} So0`c,D  
} _Wq7U1v`  
4;08n|C  
} kg zwlKK  
CzK%x?~]  
选择排序: :u,2" ]  
-DA;KWYS  
package org.rut.util.algorithm.support; 4GEjW4E  
jBT*~DyN z  
import org.rut.util.algorithm.SortUtil; o@Dk%LxP  
5/*)+  
/** %`bLmfm  
* @author treeroot ;<86P3S  
* @since 2006-2-2 <?{ SU   
* @version 1.0 ~_ (!}V  
*/ _.u~)Q`6  
public class SelectionSort implements SortUtil.Sort {  GE{8I<7c  
% E<FB;h  
/* 3L%Y"4(mm  
* (non-Javadoc) D "JMSL4r  
* goG] WGVr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bDxPgb7N=  
*/ fN~8L}!l  
public void sort(int[] data) { +SP! R[a  
int temp; rjfc.l#v  
for (int i = 0; i < data.length; i++) { 7MR:X#2v>  
int lowIndex = i; :k Rv  
for (int j = data.length - 1; j > i; j--) { !$g(&  
if (data[j] < data[lowIndex]) { avF&F  
lowIndex = j; f:)]FHPB1  
} QSO5 z2|  
} NHst7$Y<  
SortUtil.swap(data,i,lowIndex); h}Fu"zK  
} :0i#=ODR  
} ZS07_6.~  
Rt*-#`I $  
} P1M|f4*  
+:j4G^V  
Shell排序: fo/(()  
0b!fWS?,k0  
package org.rut.util.algorithm.support; \Qe'?LRu{  
x'VeL|  
import org.rut.util.algorithm.SortUtil; $u/8Rp  
W+fkWq7`Xx  
/** zW|$x<M^  
* @author treeroot K*hf(w9="%  
* @since 2006-2-2 "a2H8x  
* @version 1.0 M)bC%(xJ  
*/ vq@#Be?@  
public class ShellSort implements SortUtil.Sort{ %t,1_c0w  
1aXIhk4  
/* (non-Javadoc) DR#3njjEC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  M}_M_  
*/ 0nF>zOmc  
public void sort(int[] data) { BbXmT"@  
for(int i=data.length/2;i>2;i/=2){ Ip1QVND  
for(int j=0;j insertSort(data,j,i); 2}W6{T'  
} ^/4 {\3  
} ?,A8  fR  
insertSort(data,0,1); /jn:e"0~  
} J-HabHv  
G5C#i7cpm  
/** \H}@-*z+)  
* @param data #CBo  
* @param j #RsIxpc  
* @param i sZ\i(eIU  
*/ ^^W`Lh%9  
private void insertSort(int[] data, int start, int inc) { t/4/G']W  
int temp; !YuON6{)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qX}dbuDE"P  
} *;~{_Disz  
} k;9#4^4(  
} ^+.e5roBKj  
yDl5t-0`  
} 4.$hHFqS^5  
#dXZA>b9  
快速排序: ?L.p9o-S0  
vCrWA-q#  
package org.rut.util.algorithm.support; vM$#m1L?  
Xqq?S  
import org.rut.util.algorithm.SortUtil; @idp8J [td  
O>{t}6o  
/** 8DmX4*  
* @author treeroot I=Lj_UF4  
* @since 2006-2-2 ?N9adL &b  
* @version 1.0 l7FZ;%&  
*/ wZ#~+ }T  
public class QuickSort implements SortUtil.Sort{ _'o^@v:  
v: !7n  
/* (non-Javadoc) \p_8YC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SK~;<>:37  
*/ /3bca!O  
public void sort(int[] data) { pRaoR  
quickSort(data,0,data.length-1); s2 t-T0;  
} o7Z#,>`2  
private void quickSort(int[] data,int i,int j){ x<j($iv  
int pivotIndex=(i+j)/2; 5}(YMsUb  
file://swap (,Zz&3 AV  
SortUtil.swap(data,pivotIndex,j); 1[,#@!k@  
R _~m\P  
int k=partition(data,i-1,j,data[j]); omDi<-  
SortUtil.swap(data,k,j); `XRb:d^  
if((k-i)>1) quickSort(data,i,k-1); KfN`ZZ<  
if((j-k)>1) quickSort(data,k+1,j); Yqj.z|}Nb  
mYU dhL ^  
} [~&:`I1  
/** _*-'yu8#  
* @param data bU@>1>b6lE  
* @param i 1+y6W1m^R  
* @param j ~P.-3  
* @return 4h0jX 9  
*/ m0q`A5!)  
private int partition(int[] data, int l, int r,int pivot) { )QJU ]G  
do{ }][|]/s?42  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); hwb(W?*  
SortUtil.swap(data,l,r); ^5iY/t~Q  
} IDVY2`sM  
while(l SortUtil.swap(data,l,r); ;gw!;!T  
return l; f%{ ag  
} vo^9qSX f  
R2Fh^x  
} ;Bc<u[G  
9 h{:!  
改进后的快速排序: "$wPq@  
QK/+*hr;  
package org.rut.util.algorithm.support; #+5mpDh  
APOU&Wd  
import org.rut.util.algorithm.SortUtil; *p<5(-J3  
($ 1<Dj:  
/** Z[A|SyZp  
* @author treeroot HZ`G)1&)  
* @since 2006-2-2 5 <>agK]  
* @version 1.0 F(kRAe;  
*/  26klW:2*  
public class ImprovedQuickSort implements SortUtil.Sort { ?tM].\  
W Y qL  
private static int MAX_STACK_SIZE=4096; M`,Z#)Af  
private static int THRESHOLD=10; ,, -[P*@  
/* (non-Javadoc) f;; S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )@&?i.  
*/ d?+oT0pCH  
public void sort(int[] data) { bT6)(lm  
int[] stack=new int[MAX_STACK_SIZE]; ff+9(P>*  
=2V;B  
int top=-1; m"> =QP  
int pivot; 7XI4=O};&%  
int pivotIndex,l,r; 5@r Zm4U  
fbbl92p  
stack[++top]=0; i)^ZH#G p  
stack[++top]=data.length-1; | 3/p8  
Bv|9{:1%X}  
while(top>0){ !-}*jm p<  
int j=stack[top--]; UK9MWC5g9  
int i=stack[top--]; o[+|n[aT)3  
V5^b6$R@  
pivotIndex=(i+j)/2; OU964vv  
pivot=data[pivotIndex]; R;m0eG`  
R~?;KJ  
SortUtil.swap(data,pivotIndex,j); vrEaNT$J-  
E;Ftop  
file://partition WT? U~.U  
l=i-1; jQBdS. }'v  
r=j; %'g-%2C?  
do{ |~vQ0D  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GZ>% &^E  
SortUtil.swap(data,l,r); ^T1-dw(  
} vCe<-k  
while(l SortUtil.swap(data,l,r); &!EYT0=>p  
SortUtil.swap(data,l,j); zbKW.u]v  
(6y3"cbe  
if((l-i)>THRESHOLD){ mZJzBYM)  
stack[++top]=i; .L|ax).D  
stack[++top]=l-1; (+v*u]w4  
} wuCtg=  
if((j-l)>THRESHOLD){ =id $  
stack[++top]=l+1; 3B|-xq;]I  
stack[++top]=j; cNB$g )`  
} F!cAaL1  
Br$PL&e~  
} gBS#Z.  
file://new InsertSort().sort(data); SX<mj  
insertSort(data); aC6b})^  
} YxqQg  
/** eBRP%<=>D  
* @param data 2%yJo7f$[  
*/ ;GE u.PdxB  
private void insertSort(int[] data) { h*LL(ow5  
int temp; <R8Z[H:bV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t'/;Z:  
} _o"3gfH&sJ  
} (dt_ D  
} DyTk<L  
1^>g>bn_"  
} *^5,7}9Qo  
xa*gQ%+F  
归并排序: nAC#_\  
ASU\O3%%  
package org.rut.util.algorithm.support; `GWq3c5  
491I  
import org.rut.util.algorithm.SortUtil; WQC6{^/4[1  
Qg.:w  
/** +B|X k[  
* @author treeroot beR)8sC3q  
* @since 2006-2-2 #E@i@'T  
* @version 1.0 YfU#kvE'  
*/ k0uwG'(z9  
public class MergeSort implements SortUtil.Sort{ N9|.D.#MF  
Oo .Qz   
/* (non-Javadoc) ~ b_gwJ'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WYzaD}  
*/ TAoR6aE  
public void sort(int[] data) { "kg$s5o  
int[] temp=new int[data.length]; D*Q#G/TF3  
mergeSort(data,temp,0,data.length-1); @h,$&=HY  
} ~8{3Fc0  
sYI':UQe  
private void mergeSort(int[] data,int[] temp,int l,int r){ 'vIkA=  
int mid=(l+r)/2; [ LDzR7vnf  
if(l==r) return ; LkB!:+v |B  
mergeSort(data,temp,l,mid); GK%ovK  
mergeSort(data,temp,mid+1,r); *03/ :q^(  
for(int i=l;i<=r;i++){ v('d H"Y  
temp=data; W>nb9Isp  
} <BA&S _=4  
int i1=l; "uC*B4`  
int i2=mid+1; K7VG\Ec  
for(int cur=l;cur<=r;cur++){ jdf@lb=5l  
if(i1==mid+1) Z!eq/  
data[cur]=temp[i2++]; cN>i3}fq  
else if(i2>r) =Q/>g6  
data[cur]=temp[i1++]; I*2rS_i[T  
else if(temp[i1] data[cur]=temp[i1++]; #L$ I %L"  
else xB+H7Ya  
data[cur]=temp[i2++]; [wG%@0\  
} XOU$3+8q5  
} ]w_)Spo.  
=lD]sk  
} 34:EpZO@  
fMaNv6(  
改进后的归并排序: NyLnE  
BAHx7x#(  
package org.rut.util.algorithm.support; y]9U FL"  
c `; LF'!  
import org.rut.util.algorithm.SortUtil; d vxEXy  
wCmv/m  
/** jtY~- @*  
* @author treeroot :L0W"$  
* @since 2006-2-2 -=IM8Dny  
* @version 1.0 [ 1GEe  
*/ @NE#P&f  
public class ImprovedMergeSort implements SortUtil.Sort { b\S}?{m5  
~Xw?>&  
private static final int THRESHOLD = 10; D|:sSld @  
:/qO*&i,N  
/* 9#6/c  
* (non-Javadoc) #Q7$I.O]  
* V5 r7eC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Qu*'  
*/ FM[To  
public void sort(int[] data) { >#|Yoc  
int[] temp=new int[data.length]; vDvGT<d  
mergeSort(data,temp,0,data.length-1); ^W'[l al.  
} o |iLBh$)  
3>Snd9Q  
private void mergeSort(int[] data, int[] temp, int l, int r) { ;~1JbP  
int i, j, k; w'XgW0j{  
int mid = (l + r) / 2; efR$s{n!  
if (l == r) n#cN[C9  
return; qT @IY)e  
if ((mid - l) >= THRESHOLD) f tDV3If  
mergeSort(data, temp, l, mid); q:^Cw8  
else >IjLFM+U  
insertSort(data, l, mid - l + 1); <LN$[&f#  
if ((r - mid) > THRESHOLD) q04Dj-2<  
mergeSort(data, temp, mid + 1, r); |9eY R  
else 2A+,. S_!x  
insertSort(data, mid + 1, r - mid); ,eCXT=6  
@D=`iG%  
for (i = l; i <= mid; i++) { 7d)' y  
temp = data; eUlb6{!y?  
} W<o0Z OO  
for (j = 1; j <= r - mid; j++) { W|U1AXU7/  
temp[r - j + 1] = data[j + mid]; edx'p`%d5  
} n`xh/vGm#  
int a = temp[l]; E2D8s=r  
int b = temp[r]; qw1J{xoHW  
for (i = l, j = r, k = l; k <= r; k++) { AAgA]OD,  
if (a < b) { >oDP(]YGg  
data[k] = temp[i++]; UULL:vqq  
a = temp; \ 6 a  
} else { 9YhsJ~"Q  
data[k] = temp[j--]; 8$Yf#;m[  
b = temp[j]; 9zd/5|W  
} D[M?27  
} Iq \oB  
} >~~\==".  
mM>|fHGA  
/** 4V8wB}y7e  
* @param data pr(\?\a  
* @param l taaAwTtk?A  
* @param i )n@3@NV  
*/ :X*LlN  
private void insertSort(int[] data, int start, int len) { Ms)zEy>[Ql  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); TVwYFX  
} "s9gQAoaO  
} V}+;b bUc-  
} Y'1V(5/&  
} yG$@!*|  
 ?Nql7F4  
堆排序: FoCkTp+/  
%$| k3[4V  
package org.rut.util.algorithm.support; ZRGZ'+hw  
7!w nx.  
import org.rut.util.algorithm.SortUtil; 8Oh3iO  
I3Xh[% -!  
/** v"~I( kf$  
* @author treeroot XtdLKYET  
* @since 2006-2-2 S]O Hv6  
* @version 1.0 ,>v9 Y#U  
*/ %[m1\h"1  
public class HeapSort implements SortUtil.Sort{ o1+]6s+j}  
,6\f4/  
/* (non-Javadoc) Z]\^.x9S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $uynW3h  
*/ u6T?oK9j  
public void sort(int[] data) { % 6.jh#C  
MaxHeap h=new MaxHeap(); U-<"i6mg ?  
h.init(data); !5!$h` g  
for(int i=0;i h.remove(); rxeXz<  
System.arraycopy(h.queue,1,data,0,data.length); [d>yo_iB  
} ~')t1Ay s  
\zL7 j 4  
private static class MaxHeap{ Gi4dgMVei  
yt: V+qdv  
void init(int[] data){ ,s&~U<Z  
this.queue=new int[data.length+1]; q.km>XRk~  
for(int i=0;i queue[++size]=data; _O9H. _E  
fixUp(size); Y_hRL&u3W  
} ld:alEo  
} ~ O=|v/]  
)^f Q@C8  
private int size=0; R9G)X]  
9yw/-nA  
private int[] queue; pu*u[n  
WVK-dBU  
public int get() { l{m~d!w`a  
return queue[1]; MPy][^s!  
} E9 q;>)}  
D#}Yx]Q1  
public void remove() { Am0C|(#Xm  
SortUtil.swap(queue,1,size--); q*TKs#3  
fixDown(1); g_c)Ts(  
} bv>lm56  
file://fixdown jZ,[{Z(N   
private void fixDown(int k) { ~U6YN_W  
int j; \[I .  
while ((j = k << 1) <= size) { $= xQX  
if (j < size %26amp;%26amp; queue[j] j++; ~<OjXuYu  
if (queue[k]>queue[j]) file://不用交换 y]f^`2L!8>  
break; fYM6wYJ  
SortUtil.swap(queue,j,k); (H%d]  
k = j; CVG>[~}(9'  
} EFt`<qwj  
} <`UG#6z8  
private void fixUp(int k) { rtmt 3  
while (k > 1) { 15o *r  
int j = k >> 1; ,Ysl$^\  
if (queue[j]>queue[k]) ,T*_mDVY  
break; L^{;jgd&T9  
SortUtil.swap(queue,j,k); $_zkq@  
k = j; m&0BbyE.z  
} G_N-}J>EP  
} 1za'u_  
~.9o{?pbG  
} HmB[oH "x  
*@n3>$  
} iZ6C8HK&&  
s_Oh >y?Aq  
SortUtil: ;Pqyu ?  
f"<@6Axq  
package org.rut.util.algorithm; 7h#faOP  
7e{X$'  
import org.rut.util.algorithm.support.BubbleSort; SA+%c)j29  
import org.rut.util.algorithm.support.HeapSort; 3kqV_Pjg  
import org.rut.util.algorithm.support.ImprovedMergeSort; qTh='~m4[  
import org.rut.util.algorithm.support.ImprovedQuickSort; pkN:D+g S  
import org.rut.util.algorithm.support.InsertSort; :`u&TXsu  
import org.rut.util.algorithm.support.MergeSort; K[>@'P}y  
import org.rut.util.algorithm.support.QuickSort; UtBlP+bE?y  
import org.rut.util.algorithm.support.SelectionSort; i,Wm{+H-O  
import org.rut.util.algorithm.support.ShellSort; 3 s_k>cO=  
0Q- Mxcj  
/** ENx@Ex  
* @author treeroot f,HzrHax  
* @since 2006-2-2 io r [v  
* @version 1.0 H@2"ove-uC  
*/ j_'rhEdLP  
public class SortUtil { @f5@0A\0  
public final static int INSERT = 1; Lr?4Y  
public final static int BUBBLE = 2; t-7[Mk9@  
public final static int SELECTION = 3; eMl]td rI  
public final static int SHELL = 4; ^c0$pqZ}r  
public final static int QUICK = 5; y.*=Ww+  
public final static int IMPROVED_QUICK = 6; cv*Q]F1%  
public final static int MERGE = 7; jFNs=D&(  
public final static int IMPROVED_MERGE = 8; '0_j{ig  
public final static int HEAP = 9; -Mi}yi  
*iRm`)zC(  
public static void sort(int[] data) { j #I:6yA3  
sort(data, IMPROVED_QUICK); ?%xhe  
} teOBsFy/I  
private static String[] name={ }L$Xb2^l  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0fPHh>u  
}; `f 6)Q`n  
$v'Y:  
private static Sort[] impl=new Sort[]{ Ue g N-n  
new InsertSort(), JXLWRe  
new BubbleSort(), Y( $Ji12  
new SelectionSort(), @"{'j  
new ShellSort(), 5h|m4)$  
new QuickSort(), U.hERe ~X  
new ImprovedQuickSort(), yXTK(<'  
new MergeSort(), -q&7J' N  
new ImprovedMergeSort(), "0H56#eW  
new HeapSort() oWx_O-_._  
}; ~C"k$;(n  
N$,/Q9h^  
public static String toString(int algorithm){ ;N$0)2w  
return name[algorithm-1]; &8Jg9#  
} 9o`7Kc/g  
Hw?2XDv j  
public static void sort(int[] data, int algorithm) { ;naq-%'Sg  
impl[algorithm-1].sort(data); NlF0\+h  
} rW FcIh5  
{7=WU4$  
public static interface Sort { 'ybth  
public void sort(int[] data); Y%fVt|  
} 1qLl^DW  
~3'RW0  
public static void swap(int[] data, int i, int j) { z#{ 0;t  
int temp = data; $h 08Z  
data = data[j]; Gin_E&%g  
data[j] = temp; q[)q|R|  
} ]|,q|c,  
} 5 PGlR!^  
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