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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。 7[h_"@_A7  
插入排序: &[:MTK?x!  
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package org.rut.util.algorithm.support; QEKSbxL\W  
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import org.rut.util.algorithm.SortUtil; !l|v O(  
/** 2_M+akqy^  
* @author treeroot rqW[B/a{  
* @since 2006-2-2 T Po%zZo  
* @version 1.0 z%$ E6Im  
*/ oFM\L^Y?$$  
public class InsertSort implements SortUtil.Sort{ psyxNM=dN#  
7ksh%eV  
/* (non-Javadoc) IhnHNY]<g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LOQoi8j  
*/ c.-h'1  
public void sort(int[] data) { A}WRpsA9  
int temp; _a1 =?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $2B _a  
} ^ CVhV  
} cpvN }G  
} /WlK*8C  
#[0:5$-[  
} ?3X!  
ddvSi 6  
冒泡排序: ie|I*;#  
fHhm)T8KB  
package org.rut.util.algorithm.support; A tl`J.;G  
:W]?6=  
import org.rut.util.algorithm.SortUtil; aEU[k>&  
]@X5'r"  
/** KiW4>@tY  
* @author treeroot e~R; 2bk  
* @since 2006-2-2 .{sKEVK  
* @version 1.0 *z[G+JX  
*/ XndGe=O  
public class BubbleSort implements SortUtil.Sort{ >2h|$6iWP  
>dKK [E/[d  
/* (non-Javadoc) b~DtaGh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9ZvBsG)  
*/ fm$eJu  
public void sort(int[] data) { MV +R$  
int temp; Dy6uWv,P  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (t&]u7Atr  
if(data[j] SortUtil.swap(data,j,j-1); j.FA!4L  
} 4w,=6|#  
} _G s*4:  
} @(>XSTh9  
} Gt#Jr!N~  
#vrxhMo  
} qu]ch&"?U  
b`"E(S/  
选择排序: Ci%u =%(  
o?n lnoe  
package org.rut.util.algorithm.support; &:}e`u@5|  
L9tjH C]  
import org.rut.util.algorithm.SortUtil; }OY]mAv-B  
H.-jBFt}  
/** ~RcI+jR)  
* @author treeroot 5/x"!Jk  
* @since 2006-2-2 Rs+rlJq  
* @version 1.0 d"3S[_U  
*/ tHNvb\MR$  
public class SelectionSort implements SortUtil.Sort { eduaG,+k7p  
\#4??@+Xf  
/* Eu/~4:XN  
* (non-Javadoc) 6k6M&a  
* OLXkiesK{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &qw7BuF  
*/ ' JHCf  
public void sort(int[] data) { V]b1cDx{  
int temp; &<I*;z6%t  
for (int i = 0; i < data.length; i++) { *r!f! eA:  
int lowIndex = i; gcYx-gA}  
for (int j = data.length - 1; j > i; j--) { csn/h$`-@  
if (data[j] < data[lowIndex]) { D'V0b"  
lowIndex = j; TDI8L\rr  
} wMy$T<:   
} m"Y;GzqQl  
SortUtil.swap(data,i,lowIndex); .C^1.)  
} &`>[4D*  
} e$F]t *)Xa  
z;1y7W!v  
} %bI(   
|8I #`  
Shell排序: 8r '  
^NJ]~h{n$  
package org.rut.util.algorithm.support; Zgp]s+%E  
[6x-c;H_4  
import org.rut.util.algorithm.SortUtil; rkhQoYZ[  
dz/' m7  
/** @|Z:7n6S  
* @author treeroot 1-Fg_G}|6  
* @since 2006-2-2 [?3*/*V  
* @version 1.0 Hw"ik6  
*/ =! v.VF\;  
public class ShellSort implements SortUtil.Sort{ ;t47cUm6j  
jvx9b([<sG  
/* (non-Javadoc) J6x\_]1:*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /64jO?mp  
*/ 8r[ZGUV  
public void sort(int[] data) { 4 -)'a} O  
for(int i=data.length/2;i>2;i/=2){ vQrce&  
for(int j=0;j insertSort(data,j,i); Ta#vD_QP  
} u#5/s8  
} EubR] ckB  
insertSort(data,0,1); SNP.n))   
} $q*kD#;mh  
-1Y9-nn[m  
/** gyH'92ck  
* @param data pT]M]/y/:  
* @param j & pwSd  
* @param i #!p=P<4M  
*/ fr'M)ox1  
private void insertSort(int[] data, int start, int inc) { s vn[c*  
int temp; {#q']YDe`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4GJ1P2  
} 'B}pIx6k~  
} tf64<j6  
} =jD[A>3I  
RAR0LKGX  
} 3oX%tx  
4X7y}F.J  
快速排序: Wz$%o'OnC  
%VYQz)yW  
package org.rut.util.algorithm.support; xw: v|(  
Hv%(9)-8  
import org.rut.util.algorithm.SortUtil; Z:f0>  
Z&8 7Aj  
/** GF~^-5  
* @author treeroot 7}bjJR "  
* @since 2006-2-2 ];Whvdnv  
* @version 1.0 lJ]r %YlF  
*/ !f_GR Pj'  
public class QuickSort implements SortUtil.Sort{ 5@c,iU-L  
zi:F/TlUC  
/* (non-Javadoc) bb;fV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !8&,GT  
*/ a?'3  
public void sort(int[] data) { ;ak3 @Uee  
quickSort(data,0,data.length-1); 3ojK2F(1D  
} 1wUZ0r1'  
private void quickSort(int[] data,int i,int j){ Cw?AP6f%  
int pivotIndex=(i+j)/2; hZnT`!iFE^  
file://swap -Nmf}`_  
SortUtil.swap(data,pivotIndex,j); =fMSmn1S  
O{8"f\*  
int k=partition(data,i-1,j,data[j]); ^ )N[x''a  
SortUtil.swap(data,k,j); ^&<~6y}U^  
if((k-i)>1) quickSort(data,i,k-1); 47I:o9E  
if((j-k)>1) quickSort(data,k+1,j); >_M}l @1  
>V(>2eD'S  
} Qu]0BVIe  
/** 43rM?_72  
* @param data "FQh^+  
* @param i @_YEK3l]l  
* @param j b{)('C$  
* @return TI}H(XL(  
*/ [rqe;00]  
private int partition(int[] data, int l, int r,int pivot) { qx 3.oU  
do{ k/l@P  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); VL5kjF3/  
SortUtil.swap(data,l,r); =f@O~nGm  
} tYIHsm\b  
while(l SortUtil.swap(data,l,r); IyG5Rj2  
return l; (PGmA>BT  
} T\c;Ra  
?>MD/l(l  
} DHpU?;|3  
B%6bk.  
改进后的快速排序: L5T)_iQ5  
Ary$,3X2  
package org.rut.util.algorithm.support; nR/; uTTz  
,r5<v_  
import org.rut.util.algorithm.SortUtil; Ga f/0/|  
0w\X  
/** DjOFfD\MF  
* @author treeroot "b%hAdR  
* @since 2006-2-2 2a.NWJS  
* @version 1.0 wlqV1.K  
*/ u#p1W|\4  
public class ImprovedQuickSort implements SortUtil.Sort { EC1q#;:  
,2JqX>On>Y  
private static int MAX_STACK_SIZE=4096; ~m!>e])P?X  
private static int THRESHOLD=10; !N$4.slr<p  
/* (non-Javadoc) =D5@PHpv(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p@i U}SUaE  
*/ qNHS 1  
public void sort(int[] data) { w GZ(bKyO  
int[] stack=new int[MAX_STACK_SIZE]; *" <tFQ  
{N5g52MN  
int top=-1; N=D Ynz_~  
int pivot; 4:r^6m%%  
int pivotIndex,l,r; zq!2);,  
:&yRvu  
stack[++top]=0; !Go(8`>  
stack[++top]=data.length-1; |L;'In  
:EgdV  
while(top>0){ N(vbo  
int j=stack[top--]; OpxVy _5,  
int i=stack[top--]; Oi BK  
{\|? {8f  
pivotIndex=(i+j)/2; u-UUF  
pivot=data[pivotIndex]; mk\U wv  
i?=3RdP/R1  
SortUtil.swap(data,pivotIndex,j); ibzYY"D:  
rShi"Yw  
file://partition *(?YgV  
l=i-1; C*Ws6s>+z  
r=j; BT>*xZLpS  
do{  p<*-B  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1)_f9GR  
SortUtil.swap(data,l,r); TG?;o/  
} @<vDR">  
while(l SortUtil.swap(data,l,r); 0IDHoNaT<  
SortUtil.swap(data,l,j); 0O-p(L=  
}"m@~kg=  
if((l-i)>THRESHOLD){ gp-wlu4  
stack[++top]=i; ?[!.TU?4N  
stack[++top]=l-1; s+zb[3}  
} $L</{bXW  
if((j-l)>THRESHOLD){ {(a@3m~a%  
stack[++top]=l+1; 3kR- WgVF,  
stack[++top]=j; w41#? VC/  
} hph 3kfR  
1<\cMY6  
} p00\C  
file://new InsertSort().sort(data); Rp`}"x9  
insertSort(data); bSz6O/A/  
} LV8,nTYvE  
/** AX'(xb,  
* @param data }i[i{lKj  
*/ twgU ru  
private void insertSort(int[] data) { 0?p_|X'_  
int temp; Y2<#%@%4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hNx`=D9[7  
} d0-}Xl  
} }$qy_Esl  
} "Wi`S;  
$Z{ fKr  
} wCmwH=O  
|lJXI:G G  
归并排序: /2l4'Q=  
D%^EG8i n.  
package org.rut.util.algorithm.support; \XRViG,|5  
(|U+(~PJ  
import org.rut.util.algorithm.SortUtil; t9m`K9.\  
&OI=r vDmo  
/** .\U+`>4av  
* @author treeroot _"WQi}Mm  
* @since 2006-2-2 `n^jU92  
* @version 1.0 Kq{s^G  
*/ ~S-x-cZ  
public class MergeSort implements SortUtil.Sort{ P\2QH@p@t  
q,:\i+>K*  
/* (non-Javadoc) 9,y&?GLP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 42m`7uQ  
*/ 8 6L&u:o:  
public void sort(int[] data) { *EV]8  
int[] temp=new int[data.length]; _^a.kF  
mergeSort(data,temp,0,data.length-1); m@zxjIwT  
} |d%Dw^  
;7m>40W  
private void mergeSort(int[] data,int[] temp,int l,int r){ =z=Guvcn`  
int mid=(l+r)/2; kOtC(\]5  
if(l==r) return ; tOspDPSXX  
mergeSort(data,temp,l,mid); gVG :z_6  
mergeSort(data,temp,mid+1,r); "r"Y9KODm  
for(int i=l;i<=r;i++){ ^kt"n( P5  
temp=data; R o-Mex2  
} .f jM9G#  
int i1=l; a 3O_8GU  
int i2=mid+1; K] Eq"3  
for(int cur=l;cur<=r;cur++){ sS-5W-&P{T  
if(i1==mid+1) mD)Nh  
data[cur]=temp[i2++]; 8<]> q  
else if(i2>r) a?JU(  
data[cur]=temp[i1++]; /u #9M {  
else if(temp[i1] data[cur]=temp[i1++]; B1LnuB%  
else *\joaw  
data[cur]=temp[i2++]; l,v:[N  
} Qy6Avw/$  
} RIJBHOa  
q!AS}rV  
} iz*aBXVA[  
|Cen5s W&  
改进后的归并排序: H<NYm#a"  
wV-cpJ,}  
package org.rut.util.algorithm.support; Z&.FJZUP  
*E$D,  
import org.rut.util.algorithm.SortUtil; Zb9@U: \  
}(hE{((o  
/** +i)1 jX<  
* @author treeroot ^ g4)aaBZ  
* @since 2006-2-2 Y^6=_^  
* @version 1.0 :_e.ch:4  
*/ ax 3:rl  
public class ImprovedMergeSort implements SortUtil.Sort { Q]|+Y0y}X  
zM@iG]?kc  
private static final int THRESHOLD = 10; 2<988F  
*50Ykf  
/* Ft>ixn  
* (non-Javadoc) R#T6I i  
* P{}Oe *9"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5:s]z#8)  
*/ Pu9.Uwx  
public void sort(int[] data) { XkK16aLE  
int[] temp=new int[data.length]; &[Sw:{&*jv  
mergeSort(data,temp,0,data.length-1); o<g (%ncr  
} )E4COw+  
@C!q S7k)  
private void mergeSort(int[] data, int[] temp, int l, int r) { .4^Paxz  
int i, j, k; u{3KV6MS  
int mid = (l + r) / 2; S((8DSt*  
if (l == r) He]F~GXP  
return; $K,aLcu  
if ((mid - l) >= THRESHOLD) f a\cLC  
mergeSort(data, temp, l, mid); lhjPS!A~  
else |QzPY8B9O  
insertSort(data, l, mid - l + 1); *}v'y{;  
if ((r - mid) > THRESHOLD) T4f:0r;^f*  
mergeSort(data, temp, mid + 1, r); mWGT (`|~/  
else ';lO[B  
insertSort(data, mid + 1, r - mid); }>OE"#si  
Hv`Zc*  
for (i = l; i <= mid; i++) { M0"feq  
temp = data; R -h7c!ko  
} Tl1?5  
for (j = 1; j <= r - mid; j++) { ~]yqJYiid^  
temp[r - j + 1] = data[j + mid]; my} P\r.  
} L`Ic0}|lzy  
int a = temp[l]; 4({=(O  
int b = temp[r]; ,>g 6OU2~6  
for (i = l, j = r, k = l; k <= r; k++) { X:e'@]Z)?  
if (a < b) { !l\pwfXP&%  
data[k] = temp[i++]; UbYKiLDF)  
a = temp; Mr1pRIYMd  
} else { Bo0y"W[+  
data[k] = temp[j--]; $`5DGy?RU  
b = temp[j]; xj~6,;83xR  
} Z6*RIdD>  
} utTek5/  
} Q3KBG8  
stDn{x .  
/** s=d?}.E$  
* @param data j=gbUXv/  
* @param l EP8LJzd"  
* @param i J\{)qJ*jp  
*/ +amvQ];?Q8  
private void insertSort(int[] data, int start, int len) {  z7K?rgH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^Uf`w7"iY  
} h!Q >h7  
} _AO0:&  
} lu{}j4  
} :#LB}=HQ  
dHu]wog  
堆排序: !uZ+r%  
]MHQ "E?  
package org.rut.util.algorithm.support; $wN.~"T  
Iq5F^rH`[  
import org.rut.util.algorithm.SortUtil; vbFAS:Y:+  
|'J3"am'  
/** i3GvTg-X  
* @author treeroot ;'Y?wH[  
* @since 2006-2-2 -@73"w/  
* @version 1.0 cn#a/Hx  
*/ yO($KL +  
public class HeapSort implements SortUtil.Sort{ 54OYAkPCk  
V|D;7  
/* (non-Javadoc) nJ?C4\#3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >YW>=5_  
*/ o O|^ [b#  
public void sort(int[] data) { Q,4F=b  
MaxHeap h=new MaxHeap(); QZfPd\Q5  
h.init(data); mA."*)8VNg  
for(int i=0;i h.remove(); @Yg7F>s  
System.arraycopy(h.queue,1,data,0,data.length); ::R^ w"  
} a} /Vu"  
jn7} jWA  
private static class MaxHeap{ gPf aiVY  
:Hd<S   
void init(int[] data){ m<yA] ';s  
this.queue=new int[data.length+1]; J8%|Gd0#4  
for(int i=0;i queue[++size]=data; IQ_0[  
fixUp(size); Cjh&$aq  
} Q?>#sN,  
} wiVQMgi`  
?1{`~)"  
private int size=0; d.+vjMI  
X XF9oy8  
private int[] queue; JC#@sJ4az)  
}J*&()`  
public int get() { DYl^6 ]  
return queue[1]; dbLX}>  
} 3UaP7p+d  
1_t Dp& UO  
public void remove() { ^DH*@M  
SortUtil.swap(queue,1,size--); EK'&S=]  
fixDown(1); `~RV  
} wx!*fy4hL  
file://fixdown T/K.'92S  
private void fixDown(int k) { $i1A470C  
int j; \(C W?9)  
while ((j = k << 1) <= size) { }.'%gJrS  
if (j < size %26amp;%26amp; queue[j] j++; !vB%Q$!x  
if (queue[k]>queue[j]) file://不用交换 5B2,=?+o  
break; /;0>*ft4  
SortUtil.swap(queue,j,k); d{he  
k = j; EH:1Z*|Z{\  
} q^cFD  
} C0W~Tk\C2  
private void fixUp(int k) { v Y\O=TZT  
while (k > 1) { |x4yPYBL  
int j = k >> 1; [vi4,'wm  
if (queue[j]>queue[k]) Po_OQJ:bd  
break; <7 rK  
SortUtil.swap(queue,j,k);  LJ))  
k = j; e.+)0)A-  
} <It7s1O  
} @}Ixr{t  
Lwcw%M]  
} ;Y '\:  
</Id';|v  
} n96gDH*  
Fs|;>Up0  
SortUtil: YUb,5Y0  
L,Nr,QC-  
package org.rut.util.algorithm; z|<oxF.  
]Yu+M3Fq  
import org.rut.util.algorithm.support.BubbleSort; _HK& KY  
import org.rut.util.algorithm.support.HeapSort; 8?YW i  
import org.rut.util.algorithm.support.ImprovedMergeSort; `|w#K28t"  
import org.rut.util.algorithm.support.ImprovedQuickSort; &V3oW1*W  
import org.rut.util.algorithm.support.InsertSort; gdK/:%u3  
import org.rut.util.algorithm.support.MergeSort; $.1'Ym  
import org.rut.util.algorithm.support.QuickSort; HH#i.s2  
import org.rut.util.algorithm.support.SelectionSort; PPPwDsJ  
import org.rut.util.algorithm.support.ShellSort; }ELCnN  
:U q]~e  
/** _e_%U<\4  
* @author treeroot w3N%J>4_E  
* @since 2006-2-2 DRoxw24  
* @version 1.0 iq:[+  
*/ 48Lmy<}*  
public class SortUtil { (3h*sd5ly  
public final static int INSERT = 1; }Yl=lc vw  
public final static int BUBBLE = 2; E?mp6R]}%  
public final static int SELECTION = 3; Q75^7Ga_  
public final static int SHELL = 4; ?<?C*W_  
public final static int QUICK = 5; KUutC :  
public final static int IMPROVED_QUICK = 6; +I n"OR%  
public final static int MERGE = 7; g)A0PvEu  
public final static int IMPROVED_MERGE = 8; 1hyah.i]Y  
public final static int HEAP = 9; Q/n.T0Z ^  
I 6YT|R  
public static void sort(int[] data) { Bqi2n'^O2  
sort(data, IMPROVED_QUICK); *`-29eR"8  
} zjS:;!8em  
private static String[] name={ cmU+VZ#pk  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" h3EDN:FQ  
}; 1$VI\}  
E@6r{uZ#  
private static Sort[] impl=new Sort[]{ x2sOEkcQ  
new InsertSort(), bJF/daC5  
new BubbleSort(), .4W>9 8  
new SelectionSort(), P i!r}m  
new ShellSort(), )hW {>Y3x  
new QuickSort(), }.) 43(>]  
new ImprovedQuickSort(), 4_I{Q^f  
new MergeSort(), d`<^+p)oy  
new ImprovedMergeSort(), =k= 2~ j  
new HeapSort() #ljg2:I+  
}; pf@}4PN}  
*.c9$`s  
public static String toString(int algorithm){ (I ds<n"  
return name[algorithm-1]; [0ffOTy  
} Ju7C?)x  
$ cK B+}  
public static void sort(int[] data, int algorithm) { zZc@;S#  
impl[algorithm-1].sort(data); r_,m\'~s !  
} F6c[v|3  
!TL}~D:J  
public static interface Sort { K('l H-3wS  
public void sort(int[] data); 51opP8  
} d 4\E  
NND=Z xl  
public static void swap(int[] data, int i, int j) { {dx /p-Tv  
int temp = data; 0o$HC86w  
data = data[j]; wv.Ul rpx.  
data[j] = temp; s]vJUC,s  
} Sje0:;;|  
} HL}~W}!j  
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