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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。 y5h[^K3  
插入排序: uMZf9XUE  
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package org.rut.util.algorithm.support; l))IO`s=_  
x*V<afLY[  
import org.rut.util.algorithm.SortUtil; O,#[m:Ejb  
/** f d5~'2  
* @author treeroot MqH~L?~}|  
* @since 2006-2-2 (P8oXb+%  
* @version 1.0 X:/t>0e  
*/ A>yIH)b  
public class InsertSort implements SortUtil.Sort{ w7u >|x!  
uD3_'a  
/* (non-Javadoc) iq -o$6Pg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3J<,2  
*/ l0)uu4|  
public void sort(int[] data) { xM\ApN~W  
int temp; L~~Yh{<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "-%H</  
} YZ@-0_Z  
} [%kucGC7  
} W9"I++~f  
W^f#xrq>  
} |&7,g  
F eLP!oS>  
冒泡排序: ;0'v`ob'.?  
1O4"MeF  
package org.rut.util.algorithm.support; 63=m11 Z4  
qZe"'"3M  
import org.rut.util.algorithm.SortUtil; RSC-+c6 1  
f'dI"o&^/d  
/** _!7o   
* @author treeroot ZD(gYNi  
* @since 2006-2-2 `Fj(g!`  
* @version 1.0 h;->i]  
*/ "Cb<~Dy  
public class BubbleSort implements SortUtil.Sort{ jLSZ#H  
E3!twR*Aw  
/* (non-Javadoc) & j43DYw4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o*_D  
*/ }T,uw8?f!  
public void sort(int[] data) { 9&cZIP   
int temp; j$6}r  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %L3]l  
if(data[j] SortUtil.swap(data,j,j-1); 5oS\uX|  
} %:*HzYf  
} *rLs!/[Z_  
} jTnu! H2o  
} o9i\[Ul  
00i9yC8@6  
} 8T4J^6  
ioggD  
选择排序: rAKd f??  
$Tg$FfD6&  
package org.rut.util.algorithm.support; -MjRFa  
!r<7]nwV  
import org.rut.util.algorithm.SortUtil; J5k%  
scdT/|(U$  
/** ZAE;$pkP  
* @author treeroot 5WUrRQ?E  
* @since 2006-2-2 +-hmITJ v  
* @version 1.0 o0 Ae*Y0  
*/ X 6)LpMm  
public class SelectionSort implements SortUtil.Sort { nFqMS|EN  
-Q; w4@  
/* om1 / 9  
* (non-Javadoc) uyj5}F+O  
* E O5Vg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |fUSq1//  
*/ pPE4~g 05h  
public void sort(int[] data) { Z]tz<YSkG  
int temp; x-1[2K1"[  
for (int i = 0; i < data.length; i++) { {'1,JwSmb  
int lowIndex = i; R`c5-0A  
for (int j = data.length - 1; j > i; j--) { Yr+&|;DB  
if (data[j] < data[lowIndex]) { <XNLeJdY  
lowIndex = j; 5J,vH  
} bu]bfnYi9  
} B4kIcHA  
SortUtil.swap(data,i,lowIndex); fRiHs\+  
} 1W U-gQki!  
} vQ;Z 0_  
S7bSR?~L[  
} m\(a{x  
PYZ8@G  
Shell排序: fA8 ,wy|>  
FX{Sb"  
package org.rut.util.algorithm.support; 6Pz\6DU,I  
#r\uh\Cy  
import org.rut.util.algorithm.SortUtil; k@?<Aw8 _X  
Ae"B]Cxb_X  
/** n'SnqJ&}  
* @author treeroot Qi9SN00F.  
* @since 2006-2-2 "h "vp&A  
* @version 1.0 ` sSI;+  
*/ @ Fu|et  
public class ShellSort implements SortUtil.Sort{ oZQu&O'  
i]P]o)  
/* (non-Javadoc) #soWX_>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7z}NI,R}1  
*/ zJPzI{-w|  
public void sort(int[] data) { cG.4%Va@s_  
for(int i=data.length/2;i>2;i/=2){ ).\%a h  
for(int j=0;j insertSort(data,j,i); 8IO4>CMkv  
} 0L'h5i>H)  
} 2vynz,^ET  
insertSort(data,0,1);  0y?bwxkc  
} &T{+B:*v  
[j) :2  
/** d;K,2  
* @param data %k9GoX_  
* @param j GujmBb  
* @param i LqNsQu";  
*/ )Zox;}WK+  
private void insertSort(int[] data, int start, int inc) { kIyif7  
int temp; ^]K_k7`I  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F&^u1RYz  
} H8X{!/,^  
} s~3"*,3@  
} F.4xi+S_  
MGK%F#PM  
} !IcP O  
o!:   
快速排序: G@s rQum(  
?g}G#j  
package org.rut.util.algorithm.support; `Ps&N^[  
S/V%<<[>p]  
import org.rut.util.algorithm.SortUtil; vkp_v1F%+  
\Cx2$<8  
/** nH_M#  
* @author treeroot m9 1Gc?c  
* @since 2006-2-2 f["c,,[  
* @version 1.0 3VaL%+T$,  
*/ >4 VN1 ^  
public class QuickSort implements SortUtil.Sort{ ;X, A|m$(  
~7ZWtg;B  
/* (non-Javadoc) vhvFBx0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g=n{G@*N  
*/ yw\Q>~$n[=  
public void sort(int[] data) { evjj~xkte  
quickSort(data,0,data.length-1); R.(PZCvS  
} >P@g].Q-  
private void quickSort(int[] data,int i,int j){ Kl_(4kQE_  
int pivotIndex=(i+j)/2; TophV}@B`  
file://swap iSbPOC7  
SortUtil.swap(data,pivotIndex,j); {.eo?dQ  
T5|e\<l  
int k=partition(data,i-1,j,data[j]); Z-:T')#Cf  
SortUtil.swap(data,k,j); =U'!<w<-  
if((k-i)>1) quickSort(data,i,k-1); SP.k]@P  
if((j-k)>1) quickSort(data,k+1,j); B`|f"+.  
agt/;>q\~  
} 9A~w2z\G  
/** bb  M^J  
* @param data &+ "<ia(  
* @param i `J] e.K  
* @param j oz:"w nX  
* @return 1oe,>\\  
*/  LAkBf  
private int partition(int[] data, int l, int r,int pivot) { <2N{oK.  
do{ A3)"+`&PUl  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !0dQfj^_  
SortUtil.swap(data,l,r); ,~q:rh+  
} 'Lq+ONX5  
while(l SortUtil.swap(data,l,r); auga`*  
return l; T*:w1*:  
} }`kiULC'=  
tn#cVB3  
} `;Ho<26  
v4<W57oH  
改进后的快速排序: hr;^.a^  
d?&`Z Vl  
package org.rut.util.algorithm.support; EsGf+-}|!0  
/jNvHo^B  
import org.rut.util.algorithm.SortUtil; " i:[|7  
3CgID6[Sy  
/** ]!ox2m_U  
* @author treeroot -'Ay(h   
* @since 2006-2-2 &#L C'  
* @version 1.0 D6A u)1y=&  
*/ $2\ 8Rn6'  
public class ImprovedQuickSort implements SortUtil.Sort { |Fe[RGi+8  
ULqI]k(  
private static int MAX_STACK_SIZE=4096; XVkw/ l  
private static int THRESHOLD=10; 5mQ@&E~#W  
/* (non-Javadoc) M^[;{p2uZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u"q5 6}Q?]  
*/ ]f#s`.A~  
public void sort(int[] data) {  q[ _qZ  
int[] stack=new int[MAX_STACK_SIZE];  Z/%FQ  
0S^&A?$=  
int top=-1; Qn7T{ BW  
int pivot; GQ;0KIN  
int pivotIndex,l,r; O`c+y  
W?5')  
stack[++top]=0; +9w[/n^,G  
stack[++top]=data.length-1; @>HTbs6W  
N2O *g`YC  
while(top>0){ d!E_EoOi  
int j=stack[top--]; 5>I-? Ki  
int i=stack[top--]; _8a;5hS  
/QY F|%7!  
pivotIndex=(i+j)/2; N$6e KJ]  
pivot=data[pivotIndex]; sSh{.XuB+3  
gom!dB0J  
SortUtil.swap(data,pivotIndex,j); qtExd~E  
sFc\L94  
file://partition T9 /;$6s*  
l=i-1; zbmC? 2$  
r=j; C3}:DIn"w  
do{ #7 3pryXV  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6N#hN)/  
SortUtil.swap(data,l,r); g}NO$?ndg  
} /~Y\KOH|  
while(l SortUtil.swap(data,l,r); xvV";o  
SortUtil.swap(data,l,j); '{"Rjv7  
j|t=%*  
if((l-i)>THRESHOLD){ J?9jD:x  
stack[++top]=i; I/`"lAFe  
stack[++top]=l-1; E`.xu>Yyj  
} &"^F;z/  
if((j-l)>THRESHOLD){ )i~AXBt}  
stack[++top]=l+1; )A\ ZS<@Z7  
stack[++top]=j; /W/e%.  
} B?! L~J@p  
0~bUW V  
} G:<f(Gy  
file://new InsertSort().sort(data); 1Cw]~jh  
insertSort(data); 'XK 'T\m  
} #7]Jz.S  
/** {y9G "  
* @param data ?{ N,&d  
*/ (`1i o  
private void insertSort(int[] data) { 0$*7lQ<a#M  
int temp; wXIRn?z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ev4[4T-( @  
} 'z$$ZEz!C  
} -lI6!a^  
} ,@@FAL  
N8`q.;qewz  
} U{0! <*W>  
@9h6D<?  
归并排序: ]nx5E_j2  
lT F#efcW  
package org.rut.util.algorithm.support;  \.MPjD  
R-BN}ZS  
import org.rut.util.algorithm.SortUtil; I !g+K  
FmtV[C #  
/** ap.L=vn  
* @author treeroot >L88`  
* @since 2006-2-2 0d #jiG  
* @version 1.0 7j{63d`2  
*/ ]iH~ 1[  
public class MergeSort implements SortUtil.Sort{ MVe4[<  
`&o>7a;  
/* (non-Javadoc) -ob1_0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [7=?I.\Cr7  
*/ ,V # r  
public void sort(int[] data) { "I^pb.3  
int[] temp=new int[data.length]; sKGR28e  
mergeSort(data,temp,0,data.length-1); C3e0d~C  
} Gbc2\A\  
!wEz= i  
private void mergeSort(int[] data,int[] temp,int l,int r){ !l#n.Fx&3  
int mid=(l+r)/2; oa8xuFu(n  
if(l==r) return ; _[u fH*  
mergeSort(data,temp,l,mid); 2)+ddel<Z  
mergeSort(data,temp,mid+1,r); H!uq5` j0K  
for(int i=l;i<=r;i++){ "|K D$CY  
temp=data; B-EDVMu  
} $|!@$Aj  
int i1=l; 7& G#&d  
int i2=mid+1; [5s4Jp$+  
for(int cur=l;cur<=r;cur++){ y@u,Mv  
if(i1==mid+1) >Gi* BB  
data[cur]=temp[i2++]; n*vhCeL  
else if(i2>r) K6@9=_A  
data[cur]=temp[i1++]; !ZTBiC5R  
else if(temp[i1] data[cur]=temp[i1++]; 2W vf[2Xw  
else X,i^OM_  
data[cur]=temp[i2++]; z Ud{9B$  
} _t;Mi/\P  
} W)m\q}]FYz  
WxI_wRKx  
} _q1E4z  
i[a1ij=  
改进后的归并排序: |GnqfD  
2]f?c%)I  
package org.rut.util.algorithm.support; Pvu*Y0_p  
L&h90Az1W  
import org.rut.util.algorithm.SortUtil; n>:|K0u"  
dSw%Qv*y  
/** :x/L.Bz  
* @author treeroot (SGU]@)g  
* @since 2006-2-2 y9)Rl)7-:  
* @version 1.0 x^P~+(g  
*/ %SlF7$  
public class ImprovedMergeSort implements SortUtil.Sort { 7\sRf/  
`u7"s'  
private static final int THRESHOLD = 10; 15tT%TC  
@Zov&01  
/* $@ Fvl-lK  
* (non-Javadoc) } qn@8}  
* .cA'6J"Bm\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ed=]RR 4R  
*/ yi$Jk}w  
public void sort(int[] data) { La#otuw+?  
int[] temp=new int[data.length]; -P'KpX:]hd  
mergeSort(data,temp,0,data.length-1); l&LrcM  
} yCLDJ%8  
'2BE"e  
private void mergeSort(int[] data, int[] temp, int l, int r) { Zbobi,  
int i, j, k; 22gk1'~dO  
int mid = (l + r) / 2; > qhoGg  
if (l == r) 7 G<v<&  
return; 3iC$ "9!p  
if ((mid - l) >= THRESHOLD) c[QXc9  
mergeSort(data, temp, l, mid); 2 N$yn  
else -p\uW 0XA  
insertSort(data, l, mid - l + 1); E |BE(F;K  
if ((r - mid) > THRESHOLD) v;m}<3@'  
mergeSort(data, temp, mid + 1, r); BQTibd  
else GIGC,zP@k  
insertSort(data, mid + 1, r - mid); /9..hEq^  
8kwe._&)  
for (i = l; i <= mid; i++) { cun&'JOH?U  
temp = data; lE@ V>%b  
} IxQ(g#sj_k  
for (j = 1; j <= r - mid; j++) { .3 JLa8y  
temp[r - j + 1] = data[j + mid]; !uwZ%Ux z  
} 4Y#F"+m.]  
int a = temp[l]; eVy>  
int b = temp[r]; ,|r%tNh<8$  
for (i = l, j = r, k = l; k <= r; k++) { f8c'`$O  
if (a < b) { R&`; C<6}D  
data[k] = temp[i++]; 5i42o+'  
a = temp; YAoGVey  
} else { /\0 rRT  
data[k] = temp[j--]; l#;DO9  
b = temp[j]; XzBnj7E  
} c'8pTP%[  
}  9AgTrP  
} v.Y?<=E+<d  
--}5%6  
/** 2Vn~o_ga  
* @param data >A RZ=x[  
* @param l x  #Um`  
* @param i 4%s6 d,6"  
*/ (WISf}[l;  
private void insertSort(int[] data, int start, int len) { AJ0 ;wx  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ..5rW0lr  
} % >\v6ea  
} WX9ABh&5  
} t(R Jc  
} @*VfG CQ(  
}CCTz0[D"  
堆排序: 2`?58&  
Uf ?._&:  
package org.rut.util.algorithm.support; EL?6x  
,3As Ng  
import org.rut.util.algorithm.SortUtil; +p Y*BP+~i  
5>e#SW  
/** oieJ7\h]m  
* @author treeroot 7%Q?BH7{  
* @since 2006-2-2 m 3 Y@p$i5  
* @version 1.0 O_kBAC-|R(  
*/ '=Z]mi/aw  
public class HeapSort implements SortUtil.Sort{ 9[5qN!P;y  
[@&0@/s*t'  
/* (non-Javadoc) L^{1dVGWNa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5!b+^UR;z  
*/ +'ZJ]  
public void sort(int[] data) { V8Fp1?E9S  
MaxHeap h=new MaxHeap(); YcaomPo  
h.init(data); U $2"ZyFii  
for(int i=0;i h.remove(); hp$/O4fD  
System.arraycopy(h.queue,1,data,0,data.length); Hrk]6*  
} FoNkISzW  
b5@sG^  
private static class MaxHeap{ &qjc+-r{l  
wigs1  
void init(int[] data){ RnaxRnXVR  
this.queue=new int[data.length+1]; !<8-juY  
for(int i=0;i queue[++size]=data; 0|J]EsPxu  
fixUp(size); V4 `  
} c;13V(Djy  
} t4P`#,:8  
H:k?#7D(  
private int size=0; ^7Hwpn7E  
b4R;#rm  
private int[] queue; Z0'&@P$  
<3)k M&.B  
public int get() { s;ivoGe}  
return queue[1]; =.48^$LWx  
} E-`3}"{  
P2!+ZJ&  
public void remove() { "M !]t,?S  
SortUtil.swap(queue,1,size--); m}$7d5  
fixDown(1); 3!u`PIQv  
} 0z =?}xr  
file://fixdown  81}JX  
private void fixDown(int k) { euyd(y$'k  
int j; `w_%HVw>"  
while ((j = k << 1) <= size) { GiK4LJ~cH)  
if (j < size %26amp;%26amp; queue[j] j++; RD|DHio%  
if (queue[k]>queue[j]) file://不用交换 o}p^q:T*  
break; \:m1{+l  
SortUtil.swap(queue,j,k); *8I"7'xh  
k = j; 5<>"d :9  
} z}a9%Fb  
} U!\~LKfA  
private void fixUp(int k) { kj>!&W57  
while (k > 1) { X=KC +1e  
int j = k >> 1; &~a S24c  
if (queue[j]>queue[k]) #I"s{*  
break; Q@ Ze+IhK`  
SortUtil.swap(queue,j,k); aJ"m`5]=%  
k = j; Fy$f`w_H@  
} 6dncUfB  
} f}t8V% ^E  
bP Q=88*  
} vB%os Qm  
ictV7)  
} Z0[d;m*  
4:9N]1JCb  
SortUtil: I<rT\':9  
!<3!ORFO  
package org.rut.util.algorithm; Y:R*AOx  
cN-$;Ent  
import org.rut.util.algorithm.support.BubbleSort; !pZ<{|cH  
import org.rut.util.algorithm.support.HeapSort; w,az{\  
import org.rut.util.algorithm.support.ImprovedMergeSort; Yi j^hs@eV  
import org.rut.util.algorithm.support.ImprovedQuickSort; 3yrb7Rn3  
import org.rut.util.algorithm.support.InsertSort; P-/"sD  
import org.rut.util.algorithm.support.MergeSort; s1]m^,  
import org.rut.util.algorithm.support.QuickSort; ,`bmue5  
import org.rut.util.algorithm.support.SelectionSort; K3iQ/j~aq  
import org.rut.util.algorithm.support.ShellSort; ^ -4~pDv^  
Za,myuI+  
/** MD^,"!A  
* @author treeroot U=WS]  
* @since 2006-2-2 %:v<&^oDlm  
* @version 1.0 ` {qt4zd0  
*/ 9:*[Q"v  
public class SortUtil { edo+ o{^  
public final static int INSERT = 1; 8iTB  
public final static int BUBBLE = 2; S Rk%BJ? ~  
public final static int SELECTION = 3; BwkY;Ur/AL  
public final static int SHELL = 4; N% ?R(  
public final static int QUICK = 5; pMJm@f  
public final static int IMPROVED_QUICK = 6; c5_/i7  
public final static int MERGE = 7; /xSFW7d1  
public final static int IMPROVED_MERGE = 8; 2qot(Zs1i  
public final static int HEAP = 9; /J(vqYK"  
F{4v[WP)  
public static void sort(int[] data) { Z5 p [*LMO  
sort(data, IMPROVED_QUICK); tpb lm|sW  
} inFS99DKx  
private static String[] name={ Gr4v&Mz:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" fwvwmZW  
}; >C19Kie72  
ah%Ws#&  
private static Sort[] impl=new Sort[]{ mITNx^p4f  
new InsertSort(), I tb_ H  
new BubbleSort(), RRXp9{x`  
new SelectionSort(), :}yT?LIyP  
new ShellSort(), ?;_*8Doq-a  
new QuickSort(), 1Au+X3   
new ImprovedQuickSort(), : 0 ,yq?M  
new MergeSort(), e_|Z&  
new ImprovedMergeSort(), @H<*|3J  
new HeapSort() sPG500=)  
}; :G6aO  
$_iE^zZaU^  
public static String toString(int algorithm){ L$ i:~6  
return name[algorithm-1]; B]H8^  
} q-+:1E  
F(#?-MCs  
public static void sort(int[] data, int algorithm) { lKB9n}P  
impl[algorithm-1].sort(data); -|Zzs4bx  
} 7FJ4;HLQ  
_3:%b6&Pz  
public static interface Sort { 6UqAs<c9  
public void sort(int[] data); Av?R6  
} A .Wf6o  
0ki- /{;  
public static void swap(int[] data, int i, int j) { vc&v+5Y  
int temp = data; J8!2Tt  
data = data[j]; 9(J,&)J  
data[j] = temp; &92/qRh7  
} ol*,&C:{  
} ^?Mp(o  
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