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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。 G0//P .#  
插入排序: G#CWl),=  
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package org.rut.util.algorithm.support; 7IZ(3B<87t  
q^dI!93n|  
import org.rut.util.algorithm.SortUtil; ScfW;  
/** 12E@9s$Z  
* @author treeroot +2W#= G  
* @since 2006-2-2 8'#%7+ "=!  
* @version 1.0 R{6.O+j`  
*/ Tj*zlb4  
public class InsertSort implements SortUtil.Sort{ -D.6@@%Kc}  
dmrM %a}W-  
/* (non-Javadoc) #ZGWU_l}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TiF$',WMv  
*/ :d!.E$S  
public void sort(int[] data) { J/wot,j^  
int temp; JVTG3:zD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;Z.}~d6>!  
} F+Lq  
} i' |S g  
} K#F~$k|1B  
.6OE8w 1  
} o~^hsm[44J  
C `knFGb  
冒泡排序: CWI(Q`((>  
P RX:*0  
package org.rut.util.algorithm.support; <6n(a)L1  
Yq) wE|k/  
import org.rut.util.algorithm.SortUtil; \&AmX8" [  
6z=:x+m  
/** iQin|$F_O  
* @author treeroot wTIOCj  
* @since 2006-2-2 /2?GRwU~P  
* @version 1.0 Fz)z&WT  
*/ t_@%4Wn!1L  
public class BubbleSort implements SortUtil.Sort{ eVbHPu4  
|n67!1  
/* (non-Javadoc) AytHnp\H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6eK18*j%H  
*/ Fv5@-&y$W  
public void sort(int[] data) { Dw6Q2Gnv  
int temp; |yN7#O-D  
for(int i=0;i for(int j=data.length-1;j>i;j--){ le|e 4f*+  
if(data[j] SortUtil.swap(data,j,j-1); d%4!d_I<  
} 6]Ppa ~Xwq  
} tq>QZEg  
} M*+_E8Lh  
} m[ txKj.=_  
Sjj &n S  
} #xE" ];  
yZA }WTGe  
选择排序: "o}3i!2Qr  
U4O F{  
package org.rut.util.algorithm.support; PGu6hV{  
=}U`q3k  
import org.rut.util.algorithm.SortUtil; Alp9] 0(  
K}! VY`  
/** ep,kImT  
* @author treeroot OYNs1yB  
* @since 2006-2-2 ~XQN4Tv-  
* @version 1.0 a{69JY5  
*/ =1yU& PJ  
public class SelectionSort implements SortUtil.Sort { +&-/$\"  
nvsuF)%9hZ  
/* H`aqpa"C  
* (non-Javadoc) nY}Ep\g  
* i v&:X3iB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z+NXD4  
*/ VwHTtZ  
public void sort(int[] data) { #$X_,P|D  
int temp; |ay W _5}  
for (int i = 0; i < data.length; i++) { F ~ /{1Q*  
int lowIndex = i; e [3sWv  
for (int j = data.length - 1; j > i; j--) { +:wOzTUN  
if (data[j] < data[lowIndex]) { =f{V<i~q  
lowIndex = j; f(7 /  
} srJ,Jr(  
} t#}/VnSQ  
SortUtil.swap(data,i,lowIndex); "DfvoQP  
} `gD'q5.z;3  
} ;&^S-+  
ix$?/GlL  
} r/+ <_3  
(?I8/KYR  
Shell排序: #U(dleT8  
8GV$L~i  
package org.rut.util.algorithm.support;  [L] ca*  
&T}~h^/t  
import org.rut.util.algorithm.SortUtil; avykg(  
!YsL x[+  
/** O,]t.1V  
* @author treeroot \qi=Us|=  
* @since 2006-2-2 QpAK]  
* @version 1.0 ;0P2nc:U~  
*/ ZVVK:d Dgt  
public class ShellSort implements SortUtil.Sort{ ]f-< s,@  
G;qC& 7T  
/* (non-Javadoc) W!2(Ph*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9]Uvy|  
*/ t!AHTtI  
public void sort(int[] data) { P[?~KNS:/  
for(int i=data.length/2;i>2;i/=2){ `8KWZi4 ]  
for(int j=0;j insertSort(data,j,i); ) #9/vIQ  
} \zR{D}aS  
} #ZRQVC;b;  
insertSort(data,0,1); QOcB ]G  
} Y)g7 E"  
ePa1 @dI  
/** \ :1MM  
* @param data j#9p 0[  
* @param j ShxB!/s  
* @param i t+W+f  
*/ tB'F`HM:mq  
private void insertSort(int[] data, int start, int inc) { ~aNK)<Fznd  
int temp; 4[9~g=y>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uqnoE;57^  
} IFH%R>={  
} Q: [d   
} mH}/QfUlq  
IE+$ET> t  
} /J<?2T9G  
IO/2iSbW  
快速排序: ABSA le  
(`k0tC2  
package org.rut.util.algorithm.support; *Ny^XQ_X  
LwZBM#_g  
import org.rut.util.algorithm.SortUtil; w t? 8-_  
gk"S`1>  
/** 6cb;iA  
* @author treeroot W r );A{  
* @since 2006-2-2 <:W]uT  
* @version 1.0 bBW(# Q_a  
*/ '{@hBB+ D  
public class QuickSort implements SortUtil.Sort{ 6I.N:)=  
MP-A^QT  
/* (non-Javadoc) Yi1_oe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KCGs*kp>  
*/ /iQ}DbtRb  
public void sort(int[] data) { &G@(f=  
quickSort(data,0,data.length-1); Y [0 S  
} BBm.;=8@ ^  
private void quickSort(int[] data,int i,int j){ <fCgU&  
int pivotIndex=(i+j)/2; $h`?l$jC(@  
file://swap Yc3r 3Jy  
SortUtil.swap(data,pivotIndex,j); {l-,Jbfi`  
jX$TiG  
int k=partition(data,i-1,j,data[j]); `^-?yu@  
SortUtil.swap(data,k,j); \_#0Z+pX  
if((k-i)>1) quickSort(data,i,k-1); WOZf4X`[  
if((j-k)>1) quickSort(data,k+1,j); n6ETWjP  
!Ui3}  
} _Z~wpO}/  
/** f9cS^v_:  
* @param data p{"p<XFyO  
* @param i J/pW*G-U|  
* @param j U SXz  
* @return SXSH9;j  
*/ zU:zzT}|TZ  
private int partition(int[] data, int l, int r,int pivot) { a.v$+}+.[,  
do{ VjS %!P  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); i,NN"  
SortUtil.swap(data,l,r); ;_R;P;<  
} ?D/r1%Z  
while(l SortUtil.swap(data,l,r); ps[TiW{q;  
return l; 2-ev7:  
} mHE4Es0  
Z~F% K~(  
} L01R.3Z+  
5YUn{qtD  
改进后的快速排序: #IDDKUE  
@I2m4Q{O  
package org.rut.util.algorithm.support; LyhLPU0^q  
-@b&qi7&S  
import org.rut.util.algorithm.SortUtil; MeW8aL r  
;Z:z'';Lm  
/** W1f]A#t<  
* @author treeroot wb 2N$Ew=  
* @since 2006-2-2 +^{;o0kcx  
* @version 1.0 41>Bm*if  
*/ :Qh5ZO&G0  
public class ImprovedQuickSort implements SortUtil.Sort { HNxJ`x~Z~  
"ZE JL.Wy  
private static int MAX_STACK_SIZE=4096; 0I* ^VGZ  
private static int THRESHOLD=10; Z`v6DfK}  
/* (non-Javadoc) |tP1,[w">  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Ii2rEzD  
*/ Fl>v9%A  
public void sort(int[] data) { ?u` ?_us  
int[] stack=new int[MAX_STACK_SIZE]; J xi>1  
-wtavv,J  
int top=-1; d}3<nz,  
int pivot; I&3L1rl3{*  
int pivotIndex,l,r; F IDNhu  
PQ.xmg2  
stack[++top]=0; "?Wwc d\  
stack[++top]=data.length-1; AGQCk*dm  
D"j =|4S#  
while(top>0){ %}j.6'`{  
int j=stack[top--]; yc8FEn!)&  
int i=stack[top--]; 1 h|cr_  
E)o/C(g  
pivotIndex=(i+j)/2; }P#%aE&-  
pivot=data[pivotIndex]; X0^gj>GI|  
b[$%Wg  
SortUtil.swap(data,pivotIndex,j); wxB?}   
{g@Wd2-J}  
file://partition $]:I1I  
l=i-1; k$y(H;XA  
r=j; %+|k>?&z7  
do{ fu}NH \{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @riCR<fF  
SortUtil.swap(data,l,r); .+]e9mV  
} C_dsYuQ5R  
while(l SortUtil.swap(data,l,r); ~;_]U[eOL  
SortUtil.swap(data,l,j); l %=yT6  
[bUM x  
if((l-i)>THRESHOLD){ LN ]ks)  
stack[++top]=i; +2O('}t  
stack[++top]=l-1; m <IPi <  
} l <<0:~+q  
if((j-l)>THRESHOLD){ %h=)>5-T  
stack[++top]=l+1; kX zm  
stack[++top]=j; kV!0cLH!hH  
} Nt,)5_K <  
p/ pVMR  
} A3*ti!X<6  
file://new InsertSort().sort(data); gF^l`1f"  
insertSort(data); MB" uJUk  
} jy(,^B,]  
/** U2 <*BRJ  
* @param data `* "u"7e  
*/ Yd~K\tX :n  
private void insertSort(int[] data) { Z2)f$ c  
int temp; Q2cF++Q1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B)O=wx  
} LG'JQGl5  
} I.r &;   
} iC?s`c0B  
T#6']D  
} q#LwM]<.@>  
vD D !.i  
归并排序: m8n!<_NFt(  
Y;6<AIx>  
package org.rut.util.algorithm.support; v:B_%-GfOA  
$SSE\+|3  
import org.rut.util.algorithm.SortUtil; pRx^O F(3  
@^a6^*X>  
/** V2g,JFp&  
* @author treeroot .3?'+KZ,  
* @since 2006-2-2 il<D e]G  
* @version 1.0 \#1!qeF  
*/ nL5Gr:SLo  
public class MergeSort implements SortUtil.Sort{ *=ftg&  
`)\_  
/* (non-Javadoc) p^Ca-+R3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EJjTf:  
*/ fKOm\R47  
public void sort(int[] data) { 7Ro7/PT (  
int[] temp=new int[data.length]; UBOCd[  
mergeSort(data,temp,0,data.length-1); Fx4C]S  
} pP68jL  
aO.'(kk8  
private void mergeSort(int[] data,int[] temp,int l,int r){ %}%D8-d}G  
int mid=(l+r)/2; /O|!Sg{  
if(l==r) return ; ehtiu!Vk  
mergeSort(data,temp,l,mid); (M4~N)7<P5  
mergeSort(data,temp,mid+1,r); >C+0LF`U  
for(int i=l;i<=r;i++){ *h1Zqb  
temp=data; WGN[`D"  
} LeO ))  
int i1=l; Qc;`n ck  
int i2=mid+1; WLiY:X(+|  
for(int cur=l;cur<=r;cur++){ 1,`-n5@J%n  
if(i1==mid+1) rtvuAFiH  
data[cur]=temp[i2++]; SW (7!`  
else if(i2>r) {.bLh 0  
data[cur]=temp[i1++]; aQCbRS6  
else if(temp[i1] data[cur]=temp[i1++]; vY *p][$  
else r=n|MT^O  
data[cur]=temp[i2++]; :>nk63V (  
} ioi0^aM  
} VxjEKc  
Fly@"W4a  
} '&Q_5\Tn  
,a?)#X  
改进后的归并排序: _Jk-nZgn  
($E(^p% O  
package org.rut.util.algorithm.support; FRF3V>  
)~_!u}+:(  
import org.rut.util.algorithm.SortUtil; WEqHL,Uh]  
$qD8vu )|j  
/** q?[{fcNh$  
* @author treeroot KD$P\(5#  
* @since 2006-2-2 b;]'Bo0K  
* @version 1.0 %83PbH  
*/ Vyj>&"28  
public class ImprovedMergeSort implements SortUtil.Sort { 1]A%lud4  
6NbIT[LvT  
private static final int THRESHOLD = 10; *D~@xypy  
Id]WKL:  
/* 4en&EWUr  
* (non-Javadoc) uQ&&? j  
* -}{\C]%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h?.6e9Y4  
*/ 86/CA[Y-  
public void sort(int[] data) { [aO"9  
int[] temp=new int[data.length]; b6bmvHD  
mergeSort(data,temp,0,data.length-1); Mki(,Y|1~  
} cy)L%`(7  
;&W N%L*  
private void mergeSort(int[] data, int[] temp, int l, int r) { V?Lf& X?  
int i, j, k; q]<Xx{_  
int mid = (l + r) / 2; ~Az20RrK)  
if (l == r) ETH`.~%  
return; j!mI9*hP  
if ((mid - l) >= THRESHOLD) aP8Im1<A  
mergeSort(data, temp, l, mid); )7q;F m_/  
else =zVbZ7  
insertSort(data, l, mid - l + 1); 1kio.9NIp  
if ((r - mid) > THRESHOLD) 1dfA 8=L,s  
mergeSort(data, temp, mid + 1, r); '0H +2  
else 5ez"B]&T  
insertSort(data, mid + 1, r - mid); 5zpk6FR$  
mt fDl;/D  
for (i = l; i <= mid; i++) { 2s-f?WetbP  
temp = data; i= ~HXr}  
} jA=uK6m  
for (j = 1; j <= r - mid; j++) { GuM-H $,  
temp[r - j + 1] = data[j + mid]; XS9k&~)*  
} gD=s~DgN)  
int a = temp[l]; bT[Q:#GL  
int b = temp[r]; @ )<uQ S  
for (i = l, j = r, k = l; k <= r; k++) { %E1~I\n:F  
if (a < b) { ?j8CkqX!  
data[k] = temp[i++]; 'QeqWn  
a = temp; 5y=X?hF~)  
} else { iA^w2K  
data[k] = temp[j--]; A6lf-8ncx  
b = temp[j]; GaRL]w  
} 6 Y&OG>_\  
} '  AeU  
} n9bX[+#d  
ji A$6dZU  
/** 3WPMS/  
* @param data F`Q,pBl1p6  
* @param l b ";#qVv C  
* @param i 8C,?Ai<ro  
*/ "kP.Kx!  
private void insertSort(int[] data, int start, int len) { L2{tof  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @#VxjXW^  
} M*t@Q|$:  
} E'XF n'  
} e{=7,DRH<  
} RF6(n8["MW  
J'@ I!Jc  
堆排序: ^Xa-)Pu  
9!2KpuWji  
package org.rut.util.algorithm.support; U%gP2]t%cs  
y::KjB 0  
import org.rut.util.algorithm.SortUtil; %=#&\ldPS  
*>_:E6)  
/** O(&EnNm[2  
* @author treeroot EHzU`('?[  
* @since 2006-2-2 uAVV4)  
* @version 1.0 F{l,Tl"Jw  
*/ ~p'/Z@Atu  
public class HeapSort implements SortUtil.Sort{ 'QCvN b6  
~JC``&6E=}  
/* (non-Javadoc) y9W*/H{[`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ik&loM_  
*/ ,Oxdqxu7  
public void sort(int[] data) { @Z3b^G[  
MaxHeap h=new MaxHeap(); 6K`frt  
h.init(data); 7acAU{Rr  
for(int i=0;i h.remove(); ,wX/cUyZ  
System.arraycopy(h.queue,1,data,0,data.length); .WyI.Y1  
} H D=WHT&  
O,^,G<`  
private static class MaxHeap{ >IoOCQQ*  
!m_'<=)B4~  
void init(int[] data){ z w5EaY  
this.queue=new int[data.length+1]; q#OLb"bTr  
for(int i=0;i queue[++size]=data; ).v;~yE   
fixUp(size); OEB_LI'  
} {\]SvoJnJ  
} mT!~;] RrF  
diTzolY7  
private int size=0;  sGdt)  
_9L2JN$R6  
private int[] queue; :&_@U$  
b?w4Nx#  
public int get() { {_k 6t  
return queue[1]; {tWfLfzU  
} /eIwv 31  
l l&iMj]  
public void remove() { WU=Os8gR  
SortUtil.swap(queue,1,size--); h!d#=.R  
fixDown(1); _ e`b^_  
} bE0S) b)  
file://fixdown DCw ldkdJN  
private void fixDown(int k) { VaX>tUW  
int j; c?IIaj !  
while ((j = k << 1) <= size) { c!kbHZ<Z  
if (j < size %26amp;%26amp; queue[j] j++; i~K~Czmok+  
if (queue[k]>queue[j]) file://不用交换 X_%78$N-a`  
break;  #lJF$  
SortUtil.swap(queue,j,k); P_b00",S  
k = j; g1&GX(4[  
} w5~<jw%>  
} (q +Q.Q  
private void fixUp(int k) { Qz<v. _  
while (k > 1) { ENqJ9%sk7  
int j = k >> 1; f3yZx!K_Br  
if (queue[j]>queue[k]) {{2ZWK 6|  
break; r/{0Y Fa  
SortUtil.swap(queue,j,k); t$Qav>D  
k = j; i ;X'1TN(y  
} ,j5fzA  
} hKX-]+6"  
D}3E1`)W  
} }r,k*I'K  
u!g<y  
} VK$+Nm)  
0 'L+9T5  
SortUtil: i(U*<1y  
rRsLl/d  
package org.rut.util.algorithm; u_:" u  
0Q>Yoa 11  
import org.rut.util.algorithm.support.BubbleSort; hV=)T^Q  
import org.rut.util.algorithm.support.HeapSort; :k(aH Ua  
import org.rut.util.algorithm.support.ImprovedMergeSort; $9hOWti  
import org.rut.util.algorithm.support.ImprovedQuickSort; T[<9Ty'^  
import org.rut.util.algorithm.support.InsertSort; "G4{;!0C  
import org.rut.util.algorithm.support.MergeSort; 1h)I&T"kZ  
import org.rut.util.algorithm.support.QuickSort; ,Zs-<e"  
import org.rut.util.algorithm.support.SelectionSort;  : [AW  
import org.rut.util.algorithm.support.ShellSort; C:P,q6  
\ u5%+GA-:  
/** }1(F~6RH  
* @author treeroot L\n_q6n  
* @since 2006-2-2 6.K)uQgjmv  
* @version 1.0 vk[Km[(U'  
*/ 1}V_:~7  
public class SortUtil { #]:nQ (  
public final static int INSERT = 1; 4'X^YBm  
public final static int BUBBLE = 2; fmloh1{4  
public final static int SELECTION = 3; }|A%2!Q}  
public final static int SHELL = 4; _jnH!Mw  
public final static int QUICK = 5; zeR!Y yt!  
public final static int IMPROVED_QUICK = 6; w/Q'T&>b/  
public final static int MERGE = 7; gy*N)iv%  
public final static int IMPROVED_MERGE = 8; (( t8  
public final static int HEAP = 9; t@!oc"z}@  
{){i ONd  
public static void sort(int[] data) { 8[zP2L!-  
sort(data, IMPROVED_QUICK); ]1p&*xX:Bj  
} }hl# e[$  
private static String[] name={ !@*Ac$J>$  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" wAy;ZNu  
}; >gVR5o  
nP_s+k  
private static Sort[] impl=new Sort[]{ )8e_<^M  
new InsertSort(), 8 Z#)Xb4  
new BubbleSort(), WU}JArX9  
new SelectionSort(), 2Uk$9s  
new ShellSort(), mtJI#P  
new QuickSort(), \Dr@n^hk@[  
new ImprovedQuickSort(), lf Wxdi  
new MergeSort(), *[_?4*F  
new ImprovedMergeSort(), i<&2Ffvq  
new HeapSort() v( (fRX.`  
}; *4+;E y  
BU])@~$  
public static String toString(int algorithm){ YFsEuaV  
return name[algorithm-1]; m: w/[|_  
} +KD~/}C%-  
#PtV=Ee1  
public static void sort(int[] data, int algorithm) { Pk*EnA)  
impl[algorithm-1].sort(data); zf2]|]*xz  
} \.Q"fd?a_D  
a"hlPJlG  
public static interface Sort { 2:2rwH }e  
public void sort(int[] data); ;XGG&M%3  
} Y_f6y 9?ZE  
yjN|PqtSV  
public static void swap(int[] data, int i, int j) { >mh:OJH45  
int temp = data; T`f9 jD  
data = data[j]; 7eh}Je8  
data[j] = temp; AA yzT*^  
} UyIjM;X  
} JNk ]$ xz  
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3+5=?,请输入中文答案:八 正确答案:八