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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。 4}b:..Ku  
插入排序: !T1i_  
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package org.rut.util.algorithm.support; hj[g2S%X  
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import org.rut.util.algorithm.SortUtil; VdrF=V&] O  
/** b?^<';,5  
* @author treeroot aesFv)5DK  
* @since 2006-2-2 *]k"H`JoFC  
* @version 1.0 ,4UJ| D=J  
*/ >.A:6  
public class InsertSort implements SortUtil.Sort{ 2Ki/K(  
an$h~}/6:  
/* (non-Javadoc) s!\L1E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZaV@}=Rd8  
*/ 3s Nq3I  
public void sort(int[] data) { :@L5=2Z+  
int temp; x F#)T *  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y2>] gX5  
} U3QnWPt}>  
} W>49,A,q  
} &c !-C_L 2  
#v<+G=r*O  
} w9BH>56/"  
K a jyQ"j  
冒泡排序: HBu>BSv:  
.})8gL7 V  
package org.rut.util.algorithm.support; `w }"0+V  
.:/@<V+K  
import org.rut.util.algorithm.SortUtil; _XtY/7n  
`XP Tf#9j  
/** pQi -  
* @author treeroot ^~od*:  
* @since 2006-2-2 ShP V!$0  
* @version 1.0 ??;[`_h{bz  
*/ Y_B( R  
public class BubbleSort implements SortUtil.Sort{ M`FL&Ac  
u8QX2|  
/* (non-Javadoc) C09@2M'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j3U8@tuG  
*/ Zuf&maa S  
public void sort(int[] data) { V7<} ;Lzm  
int temp; 1+Oo Qs  
for(int i=0;i for(int j=data.length-1;j>i;j--){ B'yrXa|P  
if(data[j] SortUtil.swap(data,j,j-1); G.8ZISN/  
} P? n`n!qZ  
} Qpc>5p![3  
} #kA+Yqy \)  
} H{If\B%1t  
n@f@-d$m\<  
} q.4DwY5 L  
KAGq\7  
选择排序: lK0coj1+  
*(J<~:V?  
package org.rut.util.algorithm.support; cD]t%`*  
}N NyUwFa  
import org.rut.util.algorithm.SortUtil; Z3Y%VHB_F(  
ESAh(A)8  
/** 8in8_/x  
* @author treeroot OLq/OO,w  
* @since 2006-2-2 LdcP0G\"VG  
* @version 1.0 '"6VfF)*  
*/ %O-wMl  
public class SelectionSort implements SortUtil.Sort { H)Yv_gT  
gyIPG2d  
/* '` n\YO.N  
* (non-Javadoc) h4U .wk  
* q;+qIV&.:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z 'j%.Dd8  
*/ U<t Qj`  
public void sort(int[] data) { a,X3=+_K  
int temp; 1mf_1spB  
for (int i = 0; i < data.length; i++) { -<.>jX  
int lowIndex = i; r~X6qC  
for (int j = data.length - 1; j > i; j--) { C]}0h!_V  
if (data[j] < data[lowIndex]) { X@B+{IFC  
lowIndex = j; 3=z'Ih`  
} nG2RBeJV  
} u VB&D E  
SortUtil.swap(data,i,lowIndex); s`TfNwDvU  
} U`D"L4},.  
} F$.M2*9  
:E.mU{  
} o9JJ_-O"  
Upf1*$p  
Shell排序: C0e< _6p=  
fZg Z  
package org.rut.util.algorithm.support; O\x Uv  
a XwFQ,  
import org.rut.util.algorithm.SortUtil; FJ/kumq  
"w N DjWv  
/** 'EXp[*  
* @author treeroot ).LJY<A  
* @since 2006-2-2 T. {P}#'|  
* @version 1.0 4!D!.t~r  
*/ |= ~9y"F  
public class ShellSort implements SortUtil.Sort{ rN OwB2e  
VF;%Z  
/* (non-Javadoc) /6g*WX2P1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S-My6'ar  
*/ Ta~Ei=d^  
public void sort(int[] data) { S);bcowf_  
for(int i=data.length/2;i>2;i/=2){ .DHPKz`W0  
for(int j=0;j insertSort(data,j,i); *PD7H9m  
} y/E%W/3  
} od$Cm5  
insertSort(data,0,1); k: D<Q  
} (tys7og$'  
sOv:/'  
/** C&r&&Pw  
* @param data UkeX">  
* @param j _HGbR/  
* @param i {o AJL  
*/ aR+vY1d"  
private void insertSort(int[] data, int start, int inc) { `N;JM3 ck  
int temp; K%)u zP  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); WUZusW5s  
} RWK|?FD\<  
} QrDI$p7;'  
} IOomBy:  
ZE#A?5lb  
} C,&r7  
/U+0T>(HS  
快速排序: F{v>   
G,3.'S,7  
package org.rut.util.algorithm.support; s&TPG0W  
\9jEpE^Ju(  
import org.rut.util.algorithm.SortUtil; ch!/k  
G*JasHFs  
/** .7_<0&kW  
* @author treeroot V9bn  
* @since 2006-2-2 S8 .1%sw  
* @version 1.0  ]?M3X_Mq  
*/ @vs+)aRa  
public class QuickSort implements SortUtil.Sort{ ~x4]^XS  
k> SPtiAs  
/* (non-Javadoc) wF[%+n (*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ) G a5c  
*/ [3o^06V8j  
public void sort(int[] data) { :"{("!x   
quickSort(data,0,data.length-1); 6 b-'Hui+  
} G LU7?2`t  
private void quickSort(int[] data,int i,int j){ LYhjI  
int pivotIndex=(i+j)/2; <5BNcl\ZL  
file://swap -Ph"#R&  
SortUtil.swap(data,pivotIndex,j); yzWVUqtXm  
3e,"B S)+  
int k=partition(data,i-1,j,data[j]); F}MjZZj(U=  
SortUtil.swap(data,k,j); 29z$z$l4  
if((k-i)>1) quickSort(data,i,k-1); E&G]R!  
if((j-k)>1) quickSort(data,k+1,j); dT?mMTKn+  
"!,)Pv  
} #|-i*2@oR  
/** A s"% u  
* @param data VY G o;  
* @param i DsX+/)d  
* @param j JP{Y Q:NF  
* @return ZW>iq M^9  
*/ ~'lYQ[7  
private int partition(int[] data, int l, int r,int pivot) { 8GlRO4yd  
do{ VRE[ vM'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;2N: =Rv  
SortUtil.swap(data,l,r); mM(Z8PA 9-  
} uSQRI9/ir2  
while(l SortUtil.swap(data,l,r); @;;3B  
return l; Ndmki 7A  
} CT{mzC8  
gUGMoXSTI|  
} f9$8$O  
o*_arzhA  
改进后的快速排序: Be;l!]i  
Y+)qb);  
package org.rut.util.algorithm.support; 40=*Ul U-  
*{x8@|K8  
import org.rut.util.algorithm.SortUtil; 7/e25LS!`U  
$&Lw 2 c0  
/** <]Btx;}  
* @author treeroot B}fd#dr  
* @since 2006-2-2 Fzmc#?  
* @version 1.0 '/2)I8  
*/ s+0n0C  
public class ImprovedQuickSort implements SortUtil.Sort { U5:5$T,C  
2=IZD `{!  
private static int MAX_STACK_SIZE=4096; ,8@q2a/  
private static int THRESHOLD=10; =C#22xqQ.  
/* (non-Javadoc) <g$bM;6%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) thLx!t  
*/ z?<Xx?Kk  
public void sort(int[] data) { a! gj_  
int[] stack=new int[MAX_STACK_SIZE]; &0x;60b  
VV-%AS6;  
int top=-1; HC!5AJ&+}v  
int pivot; 7<0oK|~c#  
int pivotIndex,l,r; y?'Z'  
blx"WVqo  
stack[++top]=0; B,b^_4XX$  
stack[++top]=data.length-1; c8h71Cr  
sW]>#e  
while(top>0){ kF-7OX0)  
int j=stack[top--]; o%E-K=a  
int i=stack[top--]; E>c*A40=.n  
pnpf/T{xpM  
pivotIndex=(i+j)/2; R+# g_"1@p  
pivot=data[pivotIndex]; +!/pzoWpE  
BD2Gv)?g  
SortUtil.swap(data,pivotIndex,j); d1}cXSQ1T  
T s9go  
file://partition *RD<*l  
l=i-1;  Il]p >B  
r=j; 1VA%xOURh  
do{ #X"fm1  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /u~L3Cp(  
SortUtil.swap(data,l,r); a(_3271  
} 6m0- he~  
while(l SortUtil.swap(data,l,r); Dc9Fb^]QOG  
SortUtil.swap(data,l,j); .h-k*F0Ga)  
3Vk<hBw2  
if((l-i)>THRESHOLD){ ZMEYF!j N  
stack[++top]=i; N)EJP ~0  
stack[++top]=l-1; | MXRNA~  
} G LA4O)  
if((j-l)>THRESHOLD){ g$U7bCHG  
stack[++top]=l+1; 5Z_aN|Xn  
stack[++top]=j; s+9b.  
} w|U 7pUz  
|!cM_&  
} u vyvy  
file://new InsertSort().sort(data); XZ 4H(Cj  
insertSort(data); }LwKi-G?  
} Zr|\T7w 3  
/** ,#.9^J  
* @param data S[y?>  
*/ &ER,;^H `6  
private void insertSort(int[] data) { :?$<:  
int temp; =k2"1f~e  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]4[^S.T=  
} -^,wQW:o)  
} U=N]XwjVK<  
} txix =  
kOV6O?h  
} "uU[I,h  
y*j8OA.S  
归并排序: ?j$*a7[w  
yHxi^D]  
package org.rut.util.algorithm.support; -hKtd3WbT  
t_iZ\_8  
import org.rut.util.algorithm.SortUtil; 7VA6J-T  
rm!.J0 X  
/** ^"4u1  
* @author treeroot HE*P0Y f=  
* @since 2006-2-2 x=3+@'  
* @version 1.0 z1LY|8$G  
*/ 4(p,@e31  
public class MergeSort implements SortUtil.Sort{ 9 F|e .  
C72btS  
/* (non-Javadoc) &$.x1$%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UY&DXIPM  
*/ (=w ff5U  
public void sort(int[] data) { ,CjJO -  
int[] temp=new int[data.length]; Op ;){JT  
mergeSort(data,temp,0,data.length-1); F>rf cW2  
} ]|4mD3O  
6N'HXL UlQ  
private void mergeSort(int[] data,int[] temp,int l,int r){ }9>X M  
int mid=(l+r)/2; &>z}u&oF  
if(l==r) return ; Bk8 '*O/)  
mergeSort(data,temp,l,mid); 6WEu(}=  
mergeSort(data,temp,mid+1,r); C lzz!v  
for(int i=l;i<=r;i++){ UE/N-K)`  
temp=data; %M;{+90p>t  
} 0 = - D  
int i1=l; g# <M/qn  
int i2=mid+1; dWhF[q"  
for(int cur=l;cur<=r;cur++){ Ujss?::`G  
if(i1==mid+1) ;AE%f.Y  
data[cur]=temp[i2++]; fa;GM7<e)  
else if(i2>r) D(gpF85t  
data[cur]=temp[i1++]; -Q P&A >]7  
else if(temp[i1] data[cur]=temp[i1++]; gfAVxMg  
else 'gv7&$X}4  
data[cur]=temp[i2++]; OvW/{  
} bHH=MLZR:  
} .@;,'Xw1~  
oxL4* bqZ  
} 1@A*Jj[R%  
0 ;ov^]  
改进后的归并排序: Ld YaJh~h  
|h65[9DMP  
package org.rut.util.algorithm.support; -}r(75C  
YK|Y^TU^  
import org.rut.util.algorithm.SortUtil; sYY=MD  
/yj-^u\R  
/** . G ~,h  
* @author treeroot k0R;1lZ0n  
* @since 2006-2-2 z/t:gc.  
* @version 1.0  \ l8$1p  
*/ d<l-Ldle  
public class ImprovedMergeSort implements SortUtil.Sort { ,JmA e6  
Y4dTv<=K@i  
private static final int THRESHOLD = 10; cP MUu9du  
UT7".1H  
/* =m= utd8  
* (non-Javadoc) Gg9NG`e6I  
* 7<VfE`Q3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~+Da`Wp  
*/ wuTCdBu6hU  
public void sort(int[] data) { iiZK^/P$  
int[] temp=new int[data.length]; Q{Lsr,  
mergeSort(data,temp,0,data.length-1); IRQ3>4hI  
} u3H2\<  
A4W61f  
private void mergeSort(int[] data, int[] temp, int l, int r) { v]HiG_C  
int i, j, k; U%na^Wu  
int mid = (l + r) / 2; [ {B1~D-  
if (l == r) q3E_.{t  
return; '((Ll  
if ((mid - l) >= THRESHOLD) DqHVc)9  
mergeSort(data, temp, l, mid); ^y"$k  
else =7`0hS<@F  
insertSort(data, l, mid - l + 1); /< CjBW:  
if ((r - mid) > THRESHOLD) q>q@ztt  
mergeSort(data, temp, mid + 1, r); xbA% 'p  
else o s HE4x  
insertSort(data, mid + 1, r - mid); {G%!M+n<  
4GRmo"S  
for (i = l; i <= mid; i++) { ~f2zMTI|  
temp = data; gaJIc^O  
} M('cG  
for (j = 1; j <= r - mid; j++) { l<$c.GgFd  
temp[r - j + 1] = data[j + mid]; V ;)q?ZHg  
} :22IY> p  
int a = temp[l]; 2;`"B|-T  
int b = temp[r]; ]-aeoa#  
for (i = l, j = r, k = l; k <= r; k++) { oa?eK  
if (a < b) { $V)LGu2( m  
data[k] = temp[i++]; ]4>[y?k34  
a = temp; 1XO*yZF  
} else { Mr(~ *  
data[k] = temp[j--]; Yn}_"FO'  
b = temp[j]; 9c=_p'G3Fw  
} K/u`W z~A  
} SS;QPWRZ  
} FBcF  
yX(6C]D  
/** %d9UWQ  
* @param data $0Y&r]'  
* @param l 0PnW|N0  
* @param i  ~Rcd  
*/ z~xN ]=  
private void insertSort(int[] data, int start, int len) { ?Ib/}JST  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); h tn2`  
} t?]6>J_V  
} %Ys>PzM  
} #?i#q%q  
} y=\jQ6Fc  
Tc)T0dRP  
堆排序: %f&(U/  
m=S[Y^tR  
package org.rut.util.algorithm.support; u hP0Zwn  
O`dob&C  
import org.rut.util.algorithm.SortUtil; :u{0M&  
zux+ooU  
/** 8y!fqXm%)  
* @author treeroot N)h>Ie  
* @since 2006-2-2 @X/S h:  
* @version 1.0 l#o43xr  
*/ Em@h5V  
public class HeapSort implements SortUtil.Sort{ K. R2)o`  
}FMl4 _}u  
/* (non-Javadoc) h{sW$WA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2ezuP F  
*/ WytCc>oL  
public void sort(int[] data) { C)z[Blt  
MaxHeap h=new MaxHeap(); 5! Z+2Cu]  
h.init(data); 1 qUdj[Bj  
for(int i=0;i h.remove(); NI(`o8fN  
System.arraycopy(h.queue,1,data,0,data.length); "`"j2{9|e!  
} ^;s`[f|w  
{7eKv+30  
private static class MaxHeap{ n/8Kb.Vf  
Xx|&%b{{r  
void init(int[] data){ ^l^_K)tw*  
this.queue=new int[data.length+1]; #s#z@F  
for(int i=0;i queue[++size]=data; G-3.-  
fixUp(size); #K! Df%,<  
} |-_5ou N.  
} 45j+n.9=  
(4 {49b  
private int size=0; <\^X,,WtO  
@?Y^=0  
private int[] queue; YC=BP5^  
h;4g#|,  
public int get() { |7`Vw Z  
return queue[1]; X_'.@q<!CV  
} M:`hb$k:  
4Ro(r sO  
public void remove() { BQS9q'u_  
SortUtil.swap(queue,1,size--); .4!N #'  
fixDown(1); N`Bt|#R  
} a LmVOL{  
file://fixdown &ApJ'uC  
private void fixDown(int k) { % C 3jxt  
int j; U-FA^c;  
while ((j = k << 1) <= size) { `8dE8:# Y  
if (j < size %26amp;%26amp; queue[j] j++; g=Qga09  
if (queue[k]>queue[j]) file://不用交换 d BlOU.B  
break; oLr"8R\d>t  
SortUtil.swap(queue,j,k); NNl/'ge <\  
k = j; ~2H7_+.#  
} {my=Li<_H  
} q6Q=Zo@  
private void fixUp(int k) { oyr2lfz*  
while (k > 1) { 99ha /t  
int j = k >> 1; jujx3rnK?  
if (queue[j]>queue[k]) `90v~O F  
break; phc1AN=[E  
SortUtil.swap(queue,j,k); f <w*l<@  
k = j; :T\WYKX3C  
} z'qVEHc)  
} D+SpSO7yg  
jVA~]a  
} 7&At _l_  
Mb>6.l  
} ]Qu12Wg}P  
z$Nk\9wm  
SortUtil: Dz50,*}J  
OpL 6Y+<  
package org.rut.util.algorithm; FvJSJ.;E,  
0&.lSwa  
import org.rut.util.algorithm.support.BubbleSort; c}QJ-I   
import org.rut.util.algorithm.support.HeapSort; ^J RTi'v  
import org.rut.util.algorithm.support.ImprovedMergeSort; }-L@AC/\#  
import org.rut.util.algorithm.support.ImprovedQuickSort; d_,tXV"z&  
import org.rut.util.algorithm.support.InsertSort; RE.@ +A  
import org.rut.util.algorithm.support.MergeSort; Mz G ryM-  
import org.rut.util.algorithm.support.QuickSort; 2:N_c\Vi  
import org.rut.util.algorithm.support.SelectionSort; vUK>4^{J5  
import org.rut.util.algorithm.support.ShellSort; Eo Urc9G2  
5qr!OEF2  
/** "B}08C,?  
* @author treeroot -*lP1Nbp  
* @since 2006-2-2 ,>UmKrYo  
* @version 1.0 H n!vTB  
*/ |d5L Ifb(  
public class SortUtil { 1hviT&  
public final static int INSERT = 1; 7:L~n(QpP  
public final static int BUBBLE = 2; :'dc=C  
public final static int SELECTION = 3; l1)pr{A  
public final static int SHELL = 4; |+:ZO5FaO  
public final static int QUICK = 5; z{g<y^Im+E  
public final static int IMPROVED_QUICK = 6; x!~OK::o8  
public final static int MERGE = 7; #5C3S3e=  
public final static int IMPROVED_MERGE = 8; | q16%6q  
public final static int HEAP = 9; W[>TqT63  
sOxdq"E  
public static void sort(int[] data) { erP>P  
sort(data, IMPROVED_QUICK); <PN;D#2bh  
} Qiw eM?-  
private static String[] name={ E E|zY%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" G r|@CZq  
}; #=H}6!18  
)Zf}V0!?+  
private static Sort[] impl=new Sort[]{ g yQ9Z}  
new InsertSort(),  DiQkT R  
new BubbleSort(), 5SL>q`t.bd  
new SelectionSort(), /mwr1GU  
new ShellSort(), &&nO]p`  
new QuickSort(), px>> ]>ZMH  
new ImprovedQuickSort(), 9BD|uU;0  
new MergeSort(), DsW`V~ T  
new ImprovedMergeSort(), ]2Fo.n  
new HeapSort() J8v:a`bX&  
}; `VFl|o#H  
z#J/*712  
public static String toString(int algorithm){ '}`hY1v  
return name[algorithm-1]; pu$XUt  
} ]az} n(B,  
P>T*:!s;  
public static void sort(int[] data, int algorithm) { i5<Va@ru!s  
impl[algorithm-1].sort(data); fd"~[ z[  
} Px7g\[]  
&/hr-5k  
public static interface Sort { SxW}Z_8x  
public void sort(int[] data); b)hOzx  
} khN:+V|  
@ U8}sH^  
public static void swap(int[] data, int i, int j) { )~blx+\y  
int temp = data; !+45=d 5  
data = data[j]; "">fn(  
data[j] = temp; G2+)R^FSC  
} ?tC}M;~  
} LB*#  
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