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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。 ZveNe~D7C  
插入排序: }qw->+nD  
4U8N7  
package org.rut.util.algorithm.support; wBWqibY|  
nt]'>eX_}  
import org.rut.util.algorithm.SortUtil; sYq:2Wn>8Q  
/** {#.<hPXn  
* @author treeroot /Rf,Rjs  
* @since 2006-2-2 &cWC&Ws"  
* @version 1.0 X"jL  
*/ *rgF[ :  
public class InsertSort implements SortUtil.Sort{ <~*[OwN  
86pA+c+U  
/* (non-Javadoc) LOgFi%!6:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1COSbi]  
*/ '3w%K+eJY  
public void sort(int[] data) { z~-(nyaBS  
int temp; _dY5qW1p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i[?VF\Y(  
} d8uDSy  
} 'yosDT2{#  
} U(PW$\l  
Q #X'.](1  
} Ma'#5)D  
3RX9LJGX  
冒泡排序: Bq;GO  
-e_|^T"  
package org.rut.util.algorithm.support; `g_r<EY8/  
VJ8'T"^Hf  
import org.rut.util.algorithm.SortUtil; v}J0j  
!PA><F  
/** 7|o!v);uR  
* @author treeroot ;[79Ewd#$  
* @since 2006-2-2 l}iQ0v@  
* @version 1.0 jJaMkF;f  
*/ 1S(n3(KRk$  
public class BubbleSort implements SortUtil.Sort{ )@p?4XsT4J  
,J '_Vi  
/* (non-Javadoc) 8f<y~L_(`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [K@(,/$  
*/ eIEL';N6  
public void sort(int[] data) { U{KnjoS  
int temp; v`c;1?=,q  
for(int i=0;i for(int j=data.length-1;j>i;j--){ n=PfV3B  
if(data[j] SortUtil.swap(data,j,j-1); hj&~Dn(  
} Yg?BcY\  
} c3Gy1#f:#2  
} 8{]nS8i  
} IRdR3X56  
\>>P%EU,  
} e/_QS}OA  
SuB8mPn  
选择排序: x N7sFSV@  
7AS_Aw1L  
package org.rut.util.algorithm.support; Ch3MwM5]  
Fw*O ciC  
import org.rut.util.algorithm.SortUtil; _g fmo  
&XdTY +  
/** D)pTE?@W'  
* @author treeroot 0 )cSm"s  
* @since 2006-2-2 TpwN2 =  
* @version 1.0 o<iU;15  
*/ O_ZYm{T[7  
public class SelectionSort implements SortUtil.Sort { $=Ns7Sbup  
6bc\ )n`  
/* =-_hq'il  
* (non-Javadoc) 'e*w8h  
* w3"L5;oH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w~'}uh  
*/ f1v4h[)-  
public void sort(int[] data) { <YtjE!2  
int temp; SE43C %hv  
for (int i = 0; i < data.length; i++) { t$~'$kM)<  
int lowIndex = i; oPF]]Imu  
for (int j = data.length - 1; j > i; j--) { gC7Po  
if (data[j] < data[lowIndex]) { m(?{#aaq  
lowIndex = j; 2IE\O 8b  
} {l5fKVb\C  
} i9De+3VqKK  
SortUtil.swap(data,i,lowIndex); $.kJBRgV*  
} tK .1 *  
} [>r0 (x&.  
+-(,'slov  
} |,5|ZpgL  
^9Cu?!xu0  
Shell排序: p4MWX12  
(xN1?qXB.  
package org.rut.util.algorithm.support; <qpzs@  
Osm))Ua(  
import org.rut.util.algorithm.SortUtil; 1%*\*z  
=EMB~i  
/** __Ksn^I   
* @author treeroot T]Ai{@i  
* @since 2006-2-2 D>7J[ Yxg-  
* @version 1.0 5qW>#pTFVV  
*/ |%F,n2  
public class ShellSort implements SortUtil.Sort{ tE {M  
Xpn\TD<_I  
/* (non-Javadoc) <=&$+3r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /z4c>)fV  
*/ ;m#4Q6k)V?  
public void sort(int[] data) { ;aW k-  
for(int i=data.length/2;i>2;i/=2){ Vc;[0iB  
for(int j=0;j insertSort(data,j,i); DE/SIy?  
} ,0,FzxX0!  
} YfB)TK\W9/  
insertSort(data,0,1); rvy%8%e?  
} d[p2? ]  
Jj+Q2D:  
/** eBnx$  
* @param data @WS77d~S  
* @param j T\bP8D  
* @param i >~rlnRX  
*/ uf#h~;B  
private void insertSort(int[] data, int start, int inc) { k:run2K  
int temp; +"<+JRI(M5  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0>7Ij7\[8  
} fxPg"R!1i  
} rf%lhBv  
} n.2:fk  
-Q@f),  
} \8QOZjy  
*$-X&.h[  
快速排序: %eg+ .  
aF^N  Ye  
package org.rut.util.algorithm.support; gtu<#h(  
}8Y! -qX  
import org.rut.util.algorithm.SortUtil; rx2'].  
i83~&Q=  
/** "nu]3zcd  
* @author treeroot .6C/,rQ?c  
* @since 2006-2-2 !9_(y~g{N  
* @version 1.0 7\2I>W  
*/ { sC Ni  
public class QuickSort implements SortUtil.Sort{ P\ke%Jdpw?  
%5gdLm!p  
/* (non-Javadoc) "Esl I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D/."0 #q  
*/ n>q!m@ }<  
public void sort(int[] data) { .A<Hk1(-)  
quickSort(data,0,data.length-1); Q*>)W{H&)  
} "Bf8mEmp  
private void quickSort(int[] data,int i,int j){ b+|Jw\k  
int pivotIndex=(i+j)/2; r9_ ON|  
file://swap M.mn9kw`  
SortUtil.swap(data,pivotIndex,j); Fk/I (Q  
F1@Po1VTD  
int k=partition(data,i-1,j,data[j]); T(*,nJi~9  
SortUtil.swap(data,k,j); 2 3PRb<q  
if((k-i)>1) quickSort(data,i,k-1); <3B^5p\/  
if((j-k)>1) quickSort(data,k+1,j); IHO*%3mA/  
/#Aw7F$Ey  
} V'XEz;Ze  
/** O0qG 6a  
* @param data bzNnEH`^]  
* @param i n]IF`kYQV  
* @param j 3E|||3rf  
* @return H:~p5t  
*/ O0#[hY,  
private int partition(int[] data, int l, int r,int pivot) { J.1 c,@  
do{ 0#J~@1Gf  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); DPzW,aIgv  
SortUtil.swap(data,l,r); y 9]d{:9  
} NlEyT9  
while(l SortUtil.swap(data,l,r); 'lZlfS:Z8  
return l; M?h{'$T  
} 3k)xzv%r`  
2O=$[b3  
} #Zm`*s`  
$k\bP9  
改进后的快速排序: y]jx-w c3O  
tw$EwNI[  
package org.rut.util.algorithm.support; ta)gOc)r R  
:b44LXKCP  
import org.rut.util.algorithm.SortUtil; k _V+;&:%  
0(y*EJA$  
/** >`x|E-X"  
* @author treeroot "mJo<i}  
* @since 2006-2-2 !.j{vvQ/  
* @version 1.0 %]LoR$|Y  
*/ |D)CAQn,  
public class ImprovedQuickSort implements SortUtil.Sort { MF"*xr v  
}h;Z_XF&  
private static int MAX_STACK_SIZE=4096; -w"I  
private static int THRESHOLD=10; QlGK+I>y;  
/* (non-Javadoc) bPFGQlmIO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %0-oZL  
*/ 1-p#}VX  
public void sort(int[] data) { 1 Gr^,Ry  
int[] stack=new int[MAX_STACK_SIZE]; Jq` Dvz  
oYw?kxRZ  
int top=-1; j_rO_m<8  
int pivot; PL= v,NB  
int pivotIndex,l,r; pqO3(2F9  
*,X)tZ6VX  
stack[++top]=0; d8: $ll  
stack[++top]=data.length-1; > V(C>^%->  
%_E5B6xi{  
while(top>0){ %h ;oi/pe  
int j=stack[top--]; _K#7#qp2  
int i=stack[top--]; Vl1.]'p_  
!b`fykC  
pivotIndex=(i+j)/2; \>:t={>;  
pivot=data[pivotIndex]; = cxO@Fu  
,.P]5 lE  
SortUtil.swap(data,pivotIndex,j); jF;<9-m&  
k H65k (  
file://partition 6E) T;R(@  
l=i-1; : _Y^o  
r=j; ph6/+[:  
do{ H,KH}25  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5]*lH t  
SortUtil.swap(data,l,r); ]CP5s5  
} YTTy6*\,_  
while(l SortUtil.swap(data,l,r); P7}w^#x  
SortUtil.swap(data,l,j); L?u {vX  
!=21K0~t#  
if((l-i)>THRESHOLD){ yam'LF  
stack[++top]=i; TSFrv8L  
stack[++top]=l-1; Q3ZGN1aX<  
} vh Oh3  
if((j-l)>THRESHOLD){ D?E VzG  
stack[++top]=l+1; Eo$l-Hl5=  
stack[++top]=j; %u%;L+0Q[  
} 1<@lM8&.kO  
;L87 %P(.  
} T|\sN*}\8J  
file://new InsertSort().sort(data); \KJTR0EB:>  
insertSort(data); $]?pAqU\  
} ;0_T\{H"nR  
/** tz65Tn_M  
* @param data fX9b1x  
*/ * g+v*q X  
private void insertSort(int[] data) { oa+'.b~  
int temp; hlyh8=Z6o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C,;<SV2#  
} L~+aD2 E {  
} GAH<  
} VKXi*F9  
7]u_  
} 8u[.s`^  
zk70D_}L  
归并排序: ~xam ;]2  
q@1A2L\Om  
package org.rut.util.algorithm.support; \zcSfNE  
hTAc}'^$  
import org.rut.util.algorithm.SortUtil; z1RHdu0;z  
$m>( kd1  
/** ,f>^ q"  
* @author treeroot !K_<7iExI\  
* @since 2006-2-2 :1'1 n  
* @version 1.0 2hntQ1[  
*/ ]mJ9CP8P1c  
public class MergeSort implements SortUtil.Sort{ MAqETjB  
\py&v5J)s!  
/* (non-Javadoc) mFpj@=^_G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yo5ged]i  
*/ V'.gE6we  
public void sort(int[] data) { |L;Hd.l7^*  
int[] temp=new int[data.length]; k?pNmKVJM  
mergeSort(data,temp,0,data.length-1); BR6HD7G  
} %RIu'JXi  
wc6#C>=F  
private void mergeSort(int[] data,int[] temp,int l,int r){ <1sUK4nQ,  
int mid=(l+r)/2; f:t5`c.  
if(l==r) return ; @uxg;dyI~  
mergeSort(data,temp,l,mid); Oa5-^&I  
mergeSort(data,temp,mid+1,r); Odt<WG  
for(int i=l;i<=r;i++){ |c]L]PU  
temp=data; UBwYwm0  
} k3 '5Ei  
int i1=l;  Mv%B#J  
int i2=mid+1; [eF|2:  
for(int cur=l;cur<=r;cur++){ 48GaZ@v  
if(i1==mid+1) R;/LB^X]  
data[cur]=temp[i2++]; 6>d 3*   
else if(i2>r) HRd02tah  
data[cur]=temp[i1++]; S@L%X<Vm  
else if(temp[i1] data[cur]=temp[i1++]; 7z&^i-l.  
else C5^N)-]"  
data[cur]=temp[i2++]; /X\:3P  
} d/?0xLW  
} '(:R-u!pp  
KC\W6|NtGj  
} B<!wh  
Gm\jboef]  
改进后的归并排序: ^F"eHUg  
3t] 0  
package org.rut.util.algorithm.support; >F!X'#Iv  
na/,1iI<  
import org.rut.util.algorithm.SortUtil; XOY\NMo  
PurY_  
/** j62oA$z  
* @author treeroot 6;\Tps;A  
* @since 2006-2-2 Of$gs-  
* @version 1.0 H,1I z@W1  
*/ Uv3Fe%>  
public class ImprovedMergeSort implements SortUtil.Sort { 1w?DSHe  
]n|lHZR  
private static final int THRESHOLD = 10; <C7/b#4>\  
x8h=3e$  
/* ]FO)U  
* (non-Javadoc) MW.,}f  
* u&Y1,:hiL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )RwO2H  
*/ q}7(w$&  
public void sort(int[] data) { R 9Y k9v  
int[] temp=new int[data.length]; Zv1/J}+  
mergeSort(data,temp,0,data.length-1); Ds%~J  
} m[*y9A1  
cX-) ]D  
private void mergeSort(int[] data, int[] temp, int l, int r) {  AQz&u  
int i, j, k; t.m C q 4{  
int mid = (l + r) / 2; q"^T}d d,  
if (l == r) q0]Z` <w  
return; QW"BGg~6c  
if ((mid - l) >= THRESHOLD) /H[!v:U  
mergeSort(data, temp, l, mid); EY 9N{  
else EPwM+#|e-  
insertSort(data, l, mid - l + 1); 8Ow0A  
if ((r - mid) > THRESHOLD) ~ f>km|Q{u  
mergeSort(data, temp, mid + 1, r); HvVS<Ke  
else ns[Q %_  
insertSort(data, mid + 1, r - mid); 6P*2Kg`  
oT27BK26?h  
for (i = l; i <= mid; i++) { 8a4&}^|  
temp = data; \?.Tq24  
} u~a@:D/F{G  
for (j = 1; j <= r - mid; j++) { q!zsGf {  
temp[r - j + 1] = data[j + mid]; 0FD+iID  
} LK[%}2me  
int a = temp[l]; Syj7K*,%bZ  
int b = temp[r]; oVSq#I4  
for (i = l, j = r, k = l; k <= r; k++) { x,SzZ)l-9  
if (a < b) { HN tl>H  
data[k] = temp[i++]; #<|q4a{8  
a = temp; P*;zDQy  
} else { wm r8[n&c  
data[k] = temp[j--]; h .$3 jNU  
b = temp[j]; (GdL(H#IL  
} |YAnd=$  
} OjiQBsgnj  
} pP6pn~ }  
(7g1eEK%  
/** \;G97o  
* @param data qrmJJSJ  
* @param l |F 18j9  
* @param i a_0G4@=T  
*/ ;tF7 GjEp  
private void insertSort(int[] data, int start, int len) { t~0}Emgp<(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);  !mX 2  
} 5'Fh_TXTD  
} $fE$j {  
} E}$K&<J'-  
} $iA`_H`W  
x-_!I>l&  
堆排序: sc! e$@U  
b)A$lP%`  
package org.rut.util.algorithm.support; 0r+%5}|-K  
f&S,l3H<  
import org.rut.util.algorithm.SortUtil; hD>O LoO  
F:CqB|  
/**  R9->.eE  
* @author treeroot UEJX0=  
* @since 2006-2-2 av1*i3  
* @version 1.0 @,-xaZ[  
*/ Iky'x[p,D  
public class HeapSort implements SortUtil.Sort{ hNV" {V3`{  
^6~CA  
/* (non-Javadoc) +x!V;H(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `bGAc&,&  
*/ ) tGC&l+?/  
public void sort(int[] data) { otXB:a  
MaxHeap h=new MaxHeap(); 7K`A2  
h.init(data); rBP!RSl1  
for(int i=0;i h.remove(); R4"g? e  
System.arraycopy(h.queue,1,data,0,data.length); eD*"#O)W  
} (d[)U<  
%cD7}o:u  
private static class MaxHeap{ {O6f1LuH  
zb}:wUR  
void init(int[] data){ $+sNjwv^F  
this.queue=new int[data.length+1]; b0i]T?#  
for(int i=0;i queue[++size]=data; NwmO[pt+  
fixUp(size); H;<hmbN?d  
} <BQ4x.[  
} v.+-)RLQg  
.h^."+TJ  
private int size=0; 3_IuK 6K2  
?0+D1w  
private int[] queue; /r|^Dc Nx  
4ow)vS(  
public int get() { im_W0tGvF  
return queue[1]; 16o3ER  
} "j9,3yJT  
QhK]>d.  
public void remove() { " 7RQrz  
SortUtil.swap(queue,1,size--); C}+w<  
fixDown(1); r9G<HKl  
} u(?  
file://fixdown .8CR \-  
private void fixDown(int k) { Tc@r#!.m  
int j; 0?ZJJdI3  
while ((j = k << 1) <= size) { -ny[Lh^b  
if (j < size %26amp;%26amp; queue[j] j++; ]]+wDhxH  
if (queue[k]>queue[j]) file://不用交换 [[?:,6I  
break; 8|?$KLz?F>  
SortUtil.swap(queue,j,k); OGrVy=rd  
k = j; &-9wU Z  
} .8l\;/o|  
} 4_`+&  
private void fixUp(int k) { DPi%[CRH  
while (k > 1) { `Bnp/9q5  
int j = k >> 1; H(!)]dO  
if (queue[j]>queue[k]) N>7INK  
break; :=^JHE{  
SortUtil.swap(queue,j,k); 6.2_UN^<  
k = j; 1,Uv;s;{  
} S[{#AX=0  
} d$kGYMT"  
+%8c8]2  
} :sFP{rFx~  
4)-LlYS_d<  
} S?*v p=  
91r#lDR  
SortUtil: xRJv_=dT  
^x4I  
package org.rut.util.algorithm; _UYt  
h2!We#  
import org.rut.util.algorithm.support.BubbleSort; )wo'i]#2:  
import org.rut.util.algorithm.support.HeapSort; }f<.07  
import org.rut.util.algorithm.support.ImprovedMergeSort; IBC P6[  
import org.rut.util.algorithm.support.ImprovedQuickSort; ?z171X0  
import org.rut.util.algorithm.support.InsertSort; & p"ks8"  
import org.rut.util.algorithm.support.MergeSort;  ]k_@F6 A  
import org.rut.util.algorithm.support.QuickSort; E:f0NV3"1  
import org.rut.util.algorithm.support.SelectionSort; {$HW_\w  
import org.rut.util.algorithm.support.ShellSort; oJUVW"X6  
<jQ?l% \  
/** +%=Ao6/#  
* @author treeroot *]p]mzc  
* @since 2006-2-2 # h]m8  
* @version 1.0 { o=4(RC  
*/ k;R*mg*K  
public class SortUtil { lKrD.iYt8  
public final static int INSERT = 1; pV(b>O  
public final static int BUBBLE = 2; d3+pS\&IX?  
public final static int SELECTION = 3; [P]zdw w#  
public final static int SHELL = 4; :O{`!&[>L  
public final static int QUICK = 5; Y{B|*[xM  
public final static int IMPROVED_QUICK = 6; .%h.b6^  
public final static int MERGE = 7; T/V8&'^i  
public final static int IMPROVED_MERGE = 8; Rgw\qOb  
public final static int HEAP = 9; 5u MP31  
G@oY2sM"  
public static void sort(int[] data) { /-b)`%Q|Y  
sort(data, IMPROVED_QUICK); WQ<J<$$uu  
} j08}5Eo  
private static String[] name={ KcglpKV`  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" KtUI(*$`  
}; Pk7Yq:avL  
q%w\UAqA  
private static Sort[] impl=new Sort[]{ S " R]i  
new InsertSort(), }xn\.M:ic  
new BubbleSort(), P&V,x`<Z  
new SelectionSort(), Pdmfn8I]%  
new ShellSort(), rJ4 O_a5/  
new QuickSort(), TggM/ @k  
new ImprovedQuickSort(), Lo\+T+n  
new MergeSort(), 2K'3ry)[y  
new ImprovedMergeSort(), ,OsFv}v7  
new HeapSort() X#j-Ld{j  
}; yjaX\Wb[z[  
3xWeN#T0  
public static String toString(int algorithm){ F=U3o=-:  
return name[algorithm-1]; 'due'|#^  
} a ?/GEfd  
oJ\UF S  
public static void sort(int[] data, int algorithm) { v=EV5#A  
impl[algorithm-1].sort(data); nR-`;lrF~  
} +pZ, RW.D  
m{  .'55  
public static interface Sort { ~^cx a%  
public void sort(int[] data); eEePK~%c  
} oA%8k51>~K  
vyP3]+n  
public static void swap(int[] data, int i, int j) { 6e3s |  
int temp = data; yT%"<m6Y*\  
data = data[j]; LFvKF.  
data[j] = temp; k3h,c;  
} NBuibL  
} Fq>=0 )  
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