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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。 #~Z55 D_  
插入排序: D<35FD,  
v>&sb3I  
package org.rut.util.algorithm.support; _poe{@h!  
AM ZWPU  
import org.rut.util.algorithm.SortUtil; 'l| e}eti>  
/** J"&jR7-9  
* @author treeroot WLe9m02r  
* @since 2006-2-2 7Ib/Cm0d|  
* @version 1.0 }}g.L|  
*/ V>YZ^>oeH  
public class InsertSort implements SortUtil.Sort{ Ym WVb  
Y,%d_yR[  
/* (non-Javadoc) -!kfwJg8N(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =h<LlI^v  
*/ v_$'!i$  
public void sort(int[] data) { Gc'CS_L  
int temp; lW!}OzE(m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )O~V3a  
} \z4I'"MC.9  
} @@O=a  
} GkT:7`|C  
~fDMzOd  
} _ `RCY^t  
4R~f   
冒泡排序: *<[Nvk^  
>O:31Uk  
package org.rut.util.algorithm.support; }95;qyQ$  
E_[)z%&n2  
import org.rut.util.algorithm.SortUtil; *61+Fzr  
q*^F"D:?k  
/** 4%3R}-'mh  
* @author treeroot S-8wL%r  
* @since 2006-2-2 JF vVRGWB  
* @version 1.0 RKY~[IQ,  
*/ 9EE},D  
public class BubbleSort implements SortUtil.Sort{ P9\!JH!  
.K n)sD1  
/* (non-Javadoc) D]s8w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x'.OLXx>  
*/ z`^DQ8+\j  
public void sort(int[] data) { ?)ROQ1-#@  
int temp; g@<E0 q&`$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ bHi0N@W!vG  
if(data[j] SortUtil.swap(data,j,j-1); oBm^RHTZ  
} R>ak 3Y  
} 1ud+~y$K  
} NiCH$+c\  
} aa'u5<<W  
0x-58i0  
} huu v`$~y  
*7ggw[~  
选择排序: Kf.G'v46  
|9;6Cp  
package org.rut.util.algorithm.support; ,EAf/2C  
!&3iZQGWv  
import org.rut.util.algorithm.SortUtil; ~is$Onf99#  
q:y_#r"_y  
/** /lC&'hT  
* @author treeroot $E_9AaX  
* @since 2006-2-2 }[[  
* @version 1.0 vu&%e\gM  
*/ Zj*kHjn"  
public class SelectionSort implements SortUtil.Sort { L+c7.l.yT  
&!y7PWHJ  
/* ~1NK@=7T  
* (non-Javadoc) 2 f" =f^rf  
* }w#Ek=,s#o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p;GT[Ds^  
*/ abHW[VP9  
public void sort(int[] data) { Vu%XoI)<KY  
int temp; vBM uVpzO  
for (int i = 0; i < data.length; i++) { Xy74D/ocui  
int lowIndex = i; \G3 P[E[  
for (int j = data.length - 1; j > i; j--) { j=%^CRum  
if (data[j] < data[lowIndex]) { hU}!:6G%[P  
lowIndex = j; 98%M`WY  
} <h$Nh0  
} 1;\A./FVv  
SortUtil.swap(data,i,lowIndex); a^ vXwY  
} # !m`A+!~!  
} =*icCng  
_e ]jz2j  
} (|6Y1``  
D['z/r6F  
Shell排序: S G&VZY  
yU-^w^4  
package org.rut.util.algorithm.support; |NbF3 fD  
"funFvY  
import org.rut.util.algorithm.SortUtil; 8$|< `:~J  
WMo   
/** YpAJ7 E|7  
* @author treeroot & *^FBJEa.  
* @since 2006-2-2 ]vyu!  
* @version 1.0 X `[P11`  
*/ JQ>GKu~  
public class ShellSort implements SortUtil.Sort{ NV|[.g=lg  
6z/ct|n  
/* (non-Javadoc) %{fa . >6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G2bZl% ,D  
*/ +>em !~3  
public void sort(int[] data) { hnQDm$k  
for(int i=data.length/2;i>2;i/=2){ GTj=R$%09  
for(int j=0;j insertSort(data,j,i); o]&w"3vOP0  
} {*=+g>R gD  
} ;B35E!QJ  
insertSort(data,0,1); YWV"I|Z  
} U{IY F{;@  
7j>NUx=j3  
/** ?e`4 s f_~  
* @param data -+'fn$  
* @param j YL)epi^  
* @param i F-\Swbx+  
*/ *h<= (Y%   
private void insertSort(int[] data, int start, int inc) { J3]!<v=  
int temp; V~Zi #o  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]x8_f6;D  
} h,Y!d]2w  
} L[]*vj   
} A@8Ot-t:\2  
b7 pD#v  
} X5@S LkJ-`  
^w0V{qF{  
快速排序: 61Z#;2]  
(M1HNIM;(  
package org.rut.util.algorithm.support; 4%8}vCs  
=!axQ[)A  
import org.rut.util.algorithm.SortUtil; Zz"b&`K  
7}r!&Eb  
/** TZ`@pDi  
* @author treeroot egBjr?  
* @since 2006-2-2 +GgJFBl  
* @version 1.0 AL%gqt]  
*/ *%G$[=  
public class QuickSort implements SortUtil.Sort{ U~~Y'R\ NU  
)KZ1Z$<  
/* (non-Javadoc) i6"/GSA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IETdL{`~  
*/ q P<n<  
public void sort(int[] data) { Sv*@3x  
quickSort(data,0,data.length-1); ISQC{K']J  
} }Pm>mQZ},  
private void quickSort(int[] data,int i,int j){ uS9:cdH  
int pivotIndex=(i+j)/2; ]!u12^A{  
file://swap QHt;c  
SortUtil.swap(data,pivotIndex,j); 49)A.Bh&!  
@%4MFc0`!  
int k=partition(data,i-1,j,data[j]); jpL' y1@Ut  
SortUtil.swap(data,k,j); Q^^.@FU"x  
if((k-i)>1) quickSort(data,i,k-1); \5+?wpH  
if((j-k)>1) quickSort(data,k+1,j); k,EI+lCX  
{U$qxC]M  
} 3Y\7+975m  
/** hjuzVOE|W  
* @param data _%HpB=  
* @param i 81\$X  
* @param j '~dE0ohWb  
* @return K3eYeXV  
*/ w#?@ulr]d  
private int partition(int[] data, int l, int r,int pivot) { 8q)wT0A~  
do{ T Y|5O! <  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fI{ZElPp  
SortUtil.swap(data,l,r); u9WQ0.  
} nI1DLVt  
while(l SortUtil.swap(data,l,r); _3q%  
return l; h[5<S&  
} KY)r kfo B  
|{#=#3X  
} @ljvTgZ(X  
$rB20!  
改进后的快速排序: Km~\^(a '  
ya81z4?  
package org.rut.util.algorithm.support; 1B;-ea  
*. H1m{V  
import org.rut.util.algorithm.SortUtil; _n.2'  
LPjsR=xi  
/** DVu_KT[Hd  
* @author treeroot +O< 0q"E  
* @since 2006-2-2 !B=Oc!e=K  
* @version 1.0 ;WQ@dC  
*/ "J0,SFu:  
public class ImprovedQuickSort implements SortUtil.Sort { ; Q-f6)+&  
fIrl?X']  
private static int MAX_STACK_SIZE=4096; aBPaC=g{HO  
private static int THRESHOLD=10; yOn +Y  
/* (non-Javadoc)  `O-LM e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F{1;~Yg%  
*/  P]bq9!{1  
public void sort(int[] data) { V\ ud4  
int[] stack=new int[MAX_STACK_SIZE]; O[p;IG`  
Evz;eobW/  
int top=-1; zVLv-U/=d  
int pivot; ;().  
int pivotIndex,l,r; 5xZ*U  
zw{cli&S  
stack[++top]=0; Wsn}Y-x  
stack[++top]=data.length-1; njk.$]M|nf  
0phO1h]2S)  
while(top>0){ zl>l.zJ  
int j=stack[top--]; #;bpxz1lR9  
int i=stack[top--]; v1hrRf2<  
*}9i@DP1,  
pivotIndex=(i+j)/2; q&IO9/[dk  
pivot=data[pivotIndex]; LEM{$Fxo&  
K)2ZH@  
SortUtil.swap(data,pivotIndex,j); :@PM+[B|Q  
ICNS+KsI  
file://partition @=[/bG  
l=i-1; Gt&x<  
r=j; o.tCw\M$g  
do{ 0B(<I?a/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tuA,t  
SortUtil.swap(data,l,r); *_<P% J  
} Lc>9[! +#  
while(l SortUtil.swap(data,l,r); ;!<WL@C~  
SortUtil.swap(data,l,j); Wt +, 6Cq  
aq[;[$w  
if((l-i)>THRESHOLD){ m178S3  
stack[++top]=i; S7-ka{S  
stack[++top]=l-1; e^g3J/aU  
} Jtj_R l !  
if((j-l)>THRESHOLD){ 9wP_dJvb  
stack[++top]=l+1; $!c)%qDq  
stack[++top]=j; %Z-^Bu8;y  
} i2{xW`AcUh  
fP`g#t)4Tu  
} .. qAE.%%  
file://new InsertSort().sort(data); } d / 5_X  
insertSort(data); rs01@  
} ,63hO.4M  
/** t&UPU&tY  
* @param data /#Y)nyE  
*/ pv2_A   
private void insertSort(int[] data) { . xT8@]  
int temp; s)$N&0\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -Iz&/u*}f  
} EAQg4N:D7L  
} nG;wQvc  
} 4!Ez#\  
wiWpzJz  
} s8| =1{  
so|5HR|  
归并排序: F_ ~L&jHP  
=z'w-ARy  
package org.rut.util.algorithm.support; MnvFmYgxA  
ZF :e6em  
import org.rut.util.algorithm.SortUtil; mj0{Nd  
N9r}nqCN  
/** :+ef|,:`/  
* @author treeroot lkf(t&vL2  
* @since 2006-2-2 .gNWDk0$Y  
* @version 1.0 ]%IcUd}  
*/ :ho)3kB  
public class MergeSort implements SortUtil.Sort{ @sly-2{e1  
i<|5~tm  
/* (non-Javadoc) QRj>< TKi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {aI8p}T  
*/ r]eeKV,{p  
public void sort(int[] data) { >9c$2d|>  
int[] temp=new int[data.length]; ]!J 6S.@#+  
mergeSort(data,temp,0,data.length-1); Y:C7S~  
} OKfJ  
8~?3: IZ  
private void mergeSort(int[] data,int[] temp,int l,int r){ yc5C`r+6  
int mid=(l+r)/2;  "Mgx5d  
if(l==r) return ; :mLcb. E  
mergeSort(data,temp,l,mid); C=ni5R  
mergeSort(data,temp,mid+1,r); ua1ov7w$]  
for(int i=l;i<=r;i++){ BP2-LG&\  
temp=data; <va3Ly)c&  
} I0 a,mO;m  
int i1=l; v8"plx=3  
int i2=mid+1; \P]w^  
for(int cur=l;cur<=r;cur++){ Ev;HV}G  
if(i1==mid+1) M:|Z3p K  
data[cur]=temp[i2++]; H8~<;6W  
else if(i2>r) J#B% #X  
data[cur]=temp[i1++]; {S(d5o8  
else if(temp[i1] data[cur]=temp[i1++]; E4RvVfA0F  
else C.V")D=  
data[cur]=temp[i2++]; [-!   
} I_@\O!<y}  
} 2't<Hl1qN  
cZKK\hf<  
} !=@Lyt)_b  
S!qJqZ<Bv  
改进后的归并排序: `k65&]&d  
_ngyai1  
package org.rut.util.algorithm.support; ?)x>GB(9ZN  
!YL|R[nDH|  
import org.rut.util.algorithm.SortUtil; yfeX=h  
)n 1b  
/** Ddde, WJA  
* @author treeroot ~H/|J^ J  
* @since 2006-2-2 J@Eqqyf"  
* @version 1.0 98h,VuKVaB  
*/ KE:PRX  
public class ImprovedMergeSort implements SortUtil.Sort { T1hr5V<U  
~U`oew  
private static final int THRESHOLD = 10; B" TZ8(<  
Z8nj9X$   
/* \]}|m<R  
* (non-Javadoc) 1a 3rA  
* ~\`lbGJ7?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !s#25}9zX5  
*/ qd"1KzQWO  
public void sort(int[] data) { Ar4E $\W  
int[] temp=new int[data.length]; LAeJz_9U  
mergeSort(data,temp,0,data.length-1); g1VdP[Y#  
} LY2oBX@fC  
kA?a}   
private void mergeSort(int[] data, int[] temp, int l, int r) { Yu-e |:  
int i, j, k; #+HLb  
int mid = (l + r) / 2; w\k|^  
if (l == r) C J S  
return; )ALPMmlRs  
if ((mid - l) >= THRESHOLD) M>dP 1  
mergeSort(data, temp, l, mid); I&]d6,  
else HXhz|s0  
insertSort(data, l, mid - l + 1); 'Ca6cm3Tg  
if ((r - mid) > THRESHOLD) \bqIe}3V7  
mergeSort(data, temp, mid + 1, r); b{<qt})  
else .MkHB0 2N  
insertSort(data, mid + 1, r - mid); #pP4\n-~hU  
F<q'ivj:w  
for (i = l; i <= mid; i++) { m\`dLrPX4j  
temp = data; zF6 R\w  
} %`%oupqm+  
for (j = 1; j <= r - mid; j++) { !"/]<OQ   
temp[r - j + 1] = data[j + mid]; 3^ ~M7=k  
} K[0.4+  
int a = temp[l]; 5G=<2;  
int b = temp[r]; 8A}w}h  
for (i = l, j = r, k = l; k <= r; k++) { dt(~)*~R  
if (a < b) { ;]zV ?9  
data[k] = temp[i++]; K,e"@G  
a = temp; 0UZ>y/ C)=  
} else { fyPpzA0  
data[k] = temp[j--]; ^I03PIy0l  
b = temp[j]; 9Z]~c^UB  
} o&P}GcEIw  
} $&/JY  
} Y-\hV6v6  
}S51yDVG_  
/** tFt56/4  
* @param data zY~  
* @param l 5vs~8|aRo  
* @param i 6nh!g  
*/ |niYN7 17  
private void insertSort(int[] data, int start, int len) { B*7Y5_N  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xgHR;US H  
} "MHm9D?5  
} Y $hYW  
} ~$n4Yuu2[  
} `v3WJ>Q!N?  
H-A?F ^#  
堆排序: |D+"+w/  
CsHHJgx  
package org.rut.util.algorithm.support; r_nB-\  
Qb<i,`SN  
import org.rut.util.algorithm.SortUtil; Qd;P?W6  
a5=8zO#%g  
/** DhZuQpH  
* @author treeroot G n"]<8yl~  
* @since 2006-2-2 |N_tVE  
* @version 1.0 m3W:\LTTp  
*/ ST$~l7p  
public class HeapSort implements SortUtil.Sort{ g^|}e?  
!.1oW(  
/* (non-Javadoc) ^Pl(V@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oxs O  
*/ }a?PB o`  
public void sort(int[] data) { D\|$ ! i}  
MaxHeap h=new MaxHeap();  m=D2|WA8  
h.init(data); yO*~)ALb+  
for(int i=0;i h.remove(); NRu _6~^^  
System.arraycopy(h.queue,1,data,0,data.length); i ,Cvnp6Lv  
} eKjmU| H  
.j?`U[V%a  
private static class MaxHeap{ ws8@y r<R  
I?` }h}7.  
void init(int[] data){ P^V,"B8t  
this.queue=new int[data.length+1]; ;6S,|rC ]  
for(int i=0;i queue[++size]=data; XN9s!5A<L)  
fixUp(size); Y~\71QE>  
} su;u_rc,  
} R<. <wQ4I  
~hK7(K  
private int size=0; F. 5'5%  
Z(DCR/U=(>  
private int[] queue; d: D`rpcC  
o V"d%ks  
public int get() { xxjg)rVuy  
return queue[1]; xCN6?  
} D.d(D:  
ZrY #B8  
public void remove() { p}q27<O*/  
SortUtil.swap(queue,1,size--); $ N`V%<W  
fixDown(1); !5,>[^y3  
} hRAI7xk  
file://fixdown e_'/4 n  
private void fixDown(int k) { AGaM &x=  
int j; BS3Aczwk  
while ((j = k << 1) <= size) { ,=sbK?&  
if (j < size %26amp;%26amp; queue[j] j++; pde,@0(Fa  
if (queue[k]>queue[j]) file://不用交换 q#LB 2M  
break; >[t0a"  
SortUtil.swap(queue,j,k); ^u'hl$`^  
k = j; "XPBNv\>_  
} ,b[}22  
} $!Z><&^/  
private void fixUp(int k) { l{b<rUh5W  
while (k > 1) { .OhpItn  
int j = k >> 1; m2c>RCq  
if (queue[j]>queue[k]) @1+C*  
break; & \<!{Y<'  
SortUtil.swap(queue,j,k); k(hYNmmo j  
k = j; C]S~DK1  
} z4t.- 9(C  
} 7AwV4r*:  
[5[}2 B_t  
} F`!B!uY  
J|*Z*m  
} -s~6FrKy  
y?=W  
SortUtil: $ti*I;)h4  
b-*3]gB  
package org.rut.util.algorithm; &O|!w&  
-CV_yySc  
import org.rut.util.algorithm.support.BubbleSort; hxG=g6:G  
import org.rut.util.algorithm.support.HeapSort; V|6PKED  
import org.rut.util.algorithm.support.ImprovedMergeSort; +'fy%/  
import org.rut.util.algorithm.support.ImprovedQuickSort; /<[S> ;!kr  
import org.rut.util.algorithm.support.InsertSort; &6]+a4  
import org.rut.util.algorithm.support.MergeSort; '?| (QU:)F  
import org.rut.util.algorithm.support.QuickSort; ?:StFlie  
import org.rut.util.algorithm.support.SelectionSort; +_^Rxx!XA  
import org.rut.util.algorithm.support.ShellSort; 0e./yPTT  
'XW[uK]w)  
/** >?Y)evW  
* @author treeroot 05sWN0  
* @since 2006-2-2 Z_b^K^4  
* @version 1.0 1XfH,6\8i  
*/ {u!Q=D$3  
public class SortUtil { L'i0|_  
public final static int INSERT = 1; *"cK_MH/o  
public final static int BUBBLE = 2; Q 6>7{\8l  
public final static int SELECTION = 3; #Z;6f{yWf  
public final static int SHELL = 4; nsT]Yxo%M  
public final static int QUICK = 5; 6yDj1PI  
public final static int IMPROVED_QUICK = 6; hz:^3F`>/&  
public final static int MERGE = 7; $'Pn(eZHGv  
public final static int IMPROVED_MERGE = 8; q%H`/~AYM  
public final static int HEAP = 9; kg,t[Jl  
> L5fc".  
public static void sort(int[] data) { z+@ CzHCN  
sort(data, IMPROVED_QUICK); b5!\"v4c  
} NO$n-<ag  
private static String[] name={ |E{tS,{OhJ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]JGh[B1gh  
}; FEOr'H<3x  
L >* F8|g  
private static Sort[] impl=new Sort[]{ +SM&_b  
new InsertSort(), (tZ#E L0  
new BubbleSort(), hbZ]DRg  
new SelectionSort(), '*4>&V.yX  
new ShellSort(), v?AQ&'Fk  
new QuickSort(), CMQlxX?  
new ImprovedQuickSort(), !WTZ =|  
new MergeSort(), x" N{5  
new ImprovedMergeSort(), g>k"R4  
new HeapSort() 'eM90I%(  
}; t1LIZ5JY  
=1!,A  
public static String toString(int algorithm){ \VL_  
return name[algorithm-1]; xXa* d  
} S7|6dwQ&  
xg:r5Z/|)  
public static void sort(int[] data, int algorithm) { 25bbuhss  
impl[algorithm-1].sort(data); ujX; wGje  
} /D3{EjUE=  
!{t|z=Qg  
public static interface Sort { `Zm6e!dH-  
public void sort(int[] data); r@{TN6U  
} !ka* rd  
!B}9gT  
public static void swap(int[] data, int i, int j) { wgS,U }/i  
int temp = data; F#sm^%_2  
data = data[j]; w>&*-}XX  
data[j] = temp; w31Ox1>s  
} QkdcW>:a7  
} 4\Y5RfLB_  
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3+5=?,请输入中文答案:八 正确答案:八