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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。 Y2Tg>_:t   
插入排序: JK,k@RE y]  
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package org.rut.util.algorithm.support; ?p/i}28=y  
@$Y`I{Xf  
import org.rut.util.algorithm.SortUtil; #w#B'  
/** ,cpPXcz?,  
* @author treeroot |,qz7dpe  
* @since 2006-2-2 C7PHZ`<  
* @version 1.0 Ua( !:5q?  
*/ }4+S_b  
public class InsertSort implements SortUtil.Sort{ Z,ag5 w`]L  
C,K P!B{  
/* (non-Javadoc) Zr`:A$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N2C^'dFj  
*/ W[+E5I  
public void sort(int[] data) { oZ!rK/qoA  
int temp; 4j/8Otn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \p.ku%{  
} $NqT ={!  
} MvObx'+  
} !k&<  
Al 0zL  
} 1C:lXx$|  
E_-CsL%  
冒泡排序: KbSIKj  
]_j{b)t  
package org.rut.util.algorithm.support; j5tA!o  
/f_lWr:9l  
import org.rut.util.algorithm.SortUtil; l 4(-yWC$H  
#Ey!?Z  
/** 7j{SCE;  
* @author treeroot eFbr1IV  
* @since 2006-2-2 N-;e" g  
* @version 1.0 l9#vr  
*/ ~^G k7  
public class BubbleSort implements SortUtil.Sort{ 8{@#N:SY  
iYBs )  
/* (non-Javadoc) |odl~juU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O']-<E`1k  
*/ ->:G+<  
public void sort(int[] data) { 2{g~6 U.  
int temp; Hb IRE  
for(int i=0;i for(int j=data.length-1;j>i;j--){ K6_{AuL}4  
if(data[j] SortUtil.swap(data,j,j-1); )9J&M6LX  
} 'Aai.PE:  
} t<x0?vfD  
} < JA5.6<=  
} Bxak[>/  
\,lgv  
} Fb VtyQz  
{dhGSM7  
选择排序: :Q"]W!kCs  
W8R@Pf  
package org.rut.util.algorithm.support; _G,`s7Q,w  
z`5d,M  
import org.rut.util.algorithm.SortUtil; X5'foFE'  
T/UhZ4(V  
/** r( :"BQ  
* @author treeroot A F>!:  
* @since 2006-2-2 mRFcZ.7  
* @version 1.0  g&#.zJ[-  
*/ Sr/"'w;  
public class SelectionSort implements SortUtil.Sort { QVm3(;&'  
{088j?[hzk  
/* m^%[  
* (non-Javadoc) 0k0 y'1SL  
* G)M9to  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jah~h44&  
*/ *h$Z:p-g  
public void sort(int[] data) { aB+Ux< -  
int temp; PJsiT4<  
for (int i = 0; i < data.length; i++) { Gr}Lp  
int lowIndex = i; s=#3f3  
for (int j = data.length - 1; j > i; j--) { CUaI66  
if (data[j] < data[lowIndex]) { F2:?lmhL<  
lowIndex = j; sJ{NbN~`I  
} vn9_tL&  
} _T7tq  
SortUtil.swap(data,i,lowIndex); wZ5 + H%x  
} |#Z:v1]"  
} '/J}T -,Z  
a$l  
} +K])&}Dw  
inBBU[Sl  
Shell排序: D}r,t_]Eb  
Re0ma%~LP  
package org.rut.util.algorithm.support; ECWn/4Aws  
kTL{?-  
import org.rut.util.algorithm.SortUtil; Wf +j/RxTi  
bO^#RVH  
/** ]4ya$%A  
* @author treeroot .'saUcVg:  
* @since 2006-2-2 pZ}4'GnZI  
* @version 1.0 eR4%4gW)  
*/ i"p)%q~ z  
public class ShellSort implements SortUtil.Sort{ HY4X;^hF  
ML^c-xY(  
/* (non-Javadoc) T XWi5f[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Xu8~%i  
*/ uhz:G~x!  
public void sort(int[] data) { b)tvXiO1>  
for(int i=data.length/2;i>2;i/=2){ 3i/$YX5@  
for(int j=0;j insertSort(data,j,i); y'(l]F1]  
} PF+v[h;,  
} " qY Pi  
insertSort(data,0,1); rhGHR5 g  
} ,W;\6"Iwx'  
Kz:g9  
/** 5zWxI]4d\  
* @param data }SR}ET&z  
* @param j C: @T5m  
* @param i tIR"y:U+  
*/ ( 6|S42  
private void insertSort(int[] data, int start, int inc) { XbsEO>_Z'A  
int temp; P,^`|\#7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^p ?O1qTg  
} 7{e0^V,\k  
} z|; 7;TwA  
} BFmd`#{l  
Dm?>U1{   
} rV>/:FG  
fgVeB;k|  
快速排序: [#S}L(  
NHG+l)y:  
package org.rut.util.algorithm.support; vtM!?#  
g .ty#Z=:  
import org.rut.util.algorithm.SortUtil; R}'kF63u*  
9tvLj5~  
/** [XK Ke  
* @author treeroot TR/'L!EE  
* @since 2006-2-2 {%.FIw k  
* @version 1.0 f0]8/)  
*/ _C$JO   
public class QuickSort implements SortUtil.Sort{ sS/#)/B  
@.T(\Dq^  
/* (non-Javadoc) `OO=^.-u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @5+ JXD  
*/ ]:m>pI*z.  
public void sort(int[] data) { K<'L7>s3lA  
quickSort(data,0,data.length-1); |-GmWSK_  
} mZDL=p  
private void quickSort(int[] data,int i,int j){ 6Y<'Lyg/  
int pivotIndex=(i+j)/2; _R-[*ucq  
file://swap L5=Tj4`  
SortUtil.swap(data,pivotIndex,j); (;T$[ru`  
!{tkv4  
int k=partition(data,i-1,j,data[j]); ,y@`wq>O  
SortUtil.swap(data,k,j); WX$mAQDV  
if((k-i)>1) quickSort(data,i,k-1); a "uO0LOb  
if((j-k)>1) quickSort(data,k+1,j); gmkD'CX*A  
x;ym_UZ6e  
} \' (_r  
/** {Bk9]:'$5  
* @param data t>p!qKrE'J  
* @param i g"gh2#!D  
* @param j iLiEh2%P  
* @return ICwhqH&  
*/ jsL\{I^>  
private int partition(int[] data, int l, int r,int pivot) { HL-zuZa`Ju  
do{ 9N5ptdP.d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gU1E6V-Jm  
SortUtil.swap(data,l,r); -S5M>W.Qb{  
} vX|ZPn#  
while(l SortUtil.swap(data,l,r); # ~SuL3  
return l; HH =sq  
} |_ZD[v S  
J`}5bnFP  
} ZS[(r-)$F  
k9H7(nS{  
改进后的快速排序: JbN@AX:%  
~"F83+RDe  
package org.rut.util.algorithm.support; [!9 dA.tF  
+NL^/y<;  
import org.rut.util.algorithm.SortUtil; qd\5S*Z1  
HPJ\]HV(  
/** )vVt{g  
* @author treeroot Ln/6]CMl  
* @since 2006-2-2 >Hb>wlYR  
* @version 1.0 <8#Q5   
*/ IH|PdVNtg  
public class ImprovedQuickSort implements SortUtil.Sort { )QS4Z{)U  
uJ ;7]  
private static int MAX_STACK_SIZE=4096; 1d)wE4c=Z  
private static int THRESHOLD=10; wO:!B\e  
/* (non-Javadoc) f@U\2r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5A(zQ'6  
*/ ]l\'1-/  
public void sort(int[] data) { # LRN@?P  
int[] stack=new int[MAX_STACK_SIZE]; ~xI1@^ r  
M =Pn8<h~  
int top=-1; \z"0lAv"  
int pivot; $U=E7JO  
int pivotIndex,l,r; ZNb;2 4  
<-KHy`u  
stack[++top]=0; oL?(; `"&  
stack[++top]=data.length-1; ? tre)  
+%vBDcf  
while(top>0){ +c&n7  
int j=stack[top--]; <s/n8#i=H  
int i=stack[top--]; 7d&_5Tj:  
g3[Zh=+]E  
pivotIndex=(i+j)/2; P2J{ Ml#  
pivot=data[pivotIndex]; Exir?G}\  
Cw`8[)=}o  
SortUtil.swap(data,pivotIndex,j); )X*?M?~\  
~P&Brn"=Rs  
file://partition .KiJq:$H  
l=i-1; F\&Sn1>k  
r=j; =2&/Cn4  
do{ S;a'@5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K"~Tk`[0Q  
SortUtil.swap(data,l,r); h%'4V<V  
} QP/6N9/  
while(l SortUtil.swap(data,l,r); [^wEKRt&  
SortUtil.swap(data,l,j); _hP siZY9  
N[e QT  
if((l-i)>THRESHOLD){ u 6&<Bv  
stack[++top]=i; r(sQI# P  
stack[++top]=l-1; ;A^0="x&  
} jwsl"zL  
if((j-l)>THRESHOLD){ w`Q"mx*  
stack[++top]=l+1; !: e(-  
stack[++top]=j; c)H (w  
} 4dy2m!  
a^yBtb~,P  
} |Z%I3-z_DS  
file://new InsertSort().sort(data); Xk#"rM< Y  
insertSort(data); @\-i3EhR  
} J6x#c`Y  
/** (!F Uu  
* @param data f tBbO8e  
*/ =gI;%M\'  
private void insertSort(int[] data) { 8`bQ,E+2  
int temp; |$[WnYP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a[TR_ uR  
} IT,d(UV_  
}  ?39B(T  
} _?UW,5=O  
3$Ecq|4J:  
} $*)??uU  
Wxjv=#3  
归并排序: en\shc{R]`  
:00 #l]g0q  
package org.rut.util.algorithm.support; ]RYk Y7>`  
nya-Io.  
import org.rut.util.algorithm.SortUtil; -QH[gi{%`  
dc#Db~v}k  
/** (hywT)#+  
* @author treeroot -[-LR }u  
* @since 2006-2-2 v IBVp  
* @version 1.0 Jvi"K  
*/ YG2rJY+*  
public class MergeSort implements SortUtil.Sort{ L #'N  
`c 3IS5  
/* (non-Javadoc) M6n9>aW4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KP)BD;  
*/ x;H#-^LxW=  
public void sort(int[] data) { RB]K?  
int[] temp=new int[data.length]; }7k!>+eQ  
mergeSort(data,temp,0,data.length-1); F\m  
} ^B9rt\,q  
{0(:7IY,  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;K[ G]8  
int mid=(l+r)/2; xw60l&s.\L  
if(l==r) return ; l!2hwRR  
mergeSort(data,temp,l,mid); u3{gX{so  
mergeSort(data,temp,mid+1,r); Y-(),k_Q:  
for(int i=l;i<=r;i++){ HV:mS*e  
temp=data; EZvB#cuL-  
} X]'Hz@$N  
int i1=l; <pd6,l\  
int i2=mid+1; 1FfdW>ay*  
for(int cur=l;cur<=r;cur++){ $V"NB`T  
if(i1==mid+1) qX'w}nJ}H}  
data[cur]=temp[i2++]; TmS;ybsG  
else if(i2>r) aQax85  
data[cur]=temp[i1++]; _Q<wb8+/  
else if(temp[i1] data[cur]=temp[i1++]; x<) %Gs}tb  
else S312h'K j  
data[cur]=temp[i2++]; :SxOQ(n  
} a/@<KnT  
} Sz0M8fYT]  
e2#"o{+@  
} wv,,#P  
LS:3Dtq  
改进后的归并排序: JL~QE-pvD  
T-7'#uB.m  
package org.rut.util.algorithm.support; 3Rid 1;L0U  
OHnHSb'?\  
import org.rut.util.algorithm.SortUtil; AYHfe#!  
s PNX)  
/** DbSl}N;  
* @author treeroot 4-q7o]%5<  
* @since 2006-2-2 Uo{h. .7?  
* @version 1.0 V43pZ]YZ>  
*/ # k+Gg w  
public class ImprovedMergeSort implements SortUtil.Sort { VQHJ O I  
9GnNL I{  
private static final int THRESHOLD = 10; riI0k{   
Z<a6U 3  
/* NLDmZra  
* (non-Javadoc) =J.)xDx*  
* oRM EC7!A0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qB3{65  
*/ fFXG;Q8&  
public void sort(int[] data) { G'XlsyaWrb  
int[] temp=new int[data.length]; bw#zMU^E  
mergeSort(data,temp,0,data.length-1); 4QWDuLu  
} Kb0OauW  
<i'4EnO  
private void mergeSort(int[] data, int[] temp, int l, int r) { bAeN>~WvY  
int i, j, k; SsjO1F  
int mid = (l + r) / 2; qE6:`f  
if (l == r) ie$QKoE  
return; 8?']W\)  
if ((mid - l) >= THRESHOLD) kr7f<;rmJ  
mergeSort(data, temp, l, mid); = PldXw0  
else AqVTHyCu  
insertSort(data, l, mid - l + 1); [|UW_Bz  
if ((r - mid) > THRESHOLD) iV#JJ-OBq  
mergeSort(data, temp, mid + 1, r); sm}q&m]ad  
else {+f@7^/i.  
insertSort(data, mid + 1, r - mid); uF>I0J#z?  
=SLP}bP{:  
for (i = l; i <= mid; i++) { /LhAQpUQT5  
temp = data; /_rAy  
} dQ^>,(  
for (j = 1; j <= r - mid; j++) { Uq)|]a&e  
temp[r - j + 1] = data[j + mid]; 3+m#v8h1  
} q`09   
int a = temp[l]; )8oI  s  
int b = temp[r]; ".| 9h  
for (i = l, j = r, k = l; k <= r; k++) { >]"5K<-1  
if (a < b) { ~Dr/+h:^\  
data[k] = temp[i++]; gcr,?rE<  
a = temp; zQ xZR}'  
} else { AO;`k]0e  
data[k] = temp[j--]; ZZTPAmIr  
b = temp[j]; _,b%t1v  
} T3['6%  
} 3y>.1  
} u*[,W-R&  
KtHh--j`  
/** D_O%[u}  
* @param data D0PP   
* @param l ?)Lktn9%  
* @param i TJ`E/=J!  
*/ hC}A%_S  
private void insertSort(int[] data, int start, int len) { WX 79V  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /-4i"|  
} Z5Ao3O@  
} ;^:~xJFx|  
} N`y!Km  
} \~xsBPX+x  
p<'mc|hGq  
堆排序: g=pz&cz;>\  
-]5dD VSO  
package org.rut.util.algorithm.support; 8x'rNb  
df#DKV:  
import org.rut.util.algorithm.SortUtil; pw:<a2.  
 yyk[oH-Q  
/** (|ga#%iI  
* @author treeroot ^`YSl*:  
* @since 2006-2-2 r0QjCFSF=  
* @version 1.0 FqsG#6|x  
*/ 3z: rUhA  
public class HeapSort implements SortUtil.Sort{ X=(8t2  
EBw}/y{Kt  
/* (non-Javadoc) )aqu f<u@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u4$d#0sA  
*/ dT,X8 "  
public void sort(int[] data) { i[d-n/)  
MaxHeap h=new MaxHeap(); KBzEEvx/$  
h.init(data); 6luCi$bL  
for(int i=0;i h.remove(); {exF" ap  
System.arraycopy(h.queue,1,data,0,data.length);  ^]wm Y  
} -N5r[*>  
S=[K/Kf-  
private static class MaxHeap{ QfU 0*W?r  
GfQMdLy\Z  
void init(int[] data){ 5#d"]7  
this.queue=new int[data.length+1]; ~n]:f7?I  
for(int i=0;i queue[++size]=data; t>&$_CSWK  
fixUp(size);  ceVej'  
} ;^}cZ  
} lZ^XZjwoM  
2K, 1wqf'  
private int size=0; [ $.oyjd  
H|F>BjXn5  
private int[] queue; jY>KF'y  
8<)[+ @$0  
public int get() { k4pvp5}%  
return queue[1]; H) q9.Jg  
} ZH_ J+  
]lQhIf6)k  
public void remove() { '4HwS$mW3  
SortUtil.swap(queue,1,size--); E3,Z(dpX!  
fixDown(1); w \0=L=J  
} 9]|[z{v'>l  
file://fixdown HtY\!_Ea  
private void fixDown(int k) { XFYCPET  
int j; k6[t$|lMy  
while ((j = k << 1) <= size) { j@UW[,UI  
if (j < size %26amp;%26amp; queue[j] j++; t]eB3)FX  
if (queue[k]>queue[j]) file://不用交换 1ErH \!  
break; bL *;N3#E  
SortUtil.swap(queue,j,k); k>VP<Zm13  
k = j; ),bdj+wr78  
} ^fnRzX  
} n{Jvx>);  
private void fixUp(int k) { X /5tZ@  
while (k > 1) { , X$S4>  
int j = k >> 1; yKZ~ ^  
if (queue[j]>queue[k]) X,O&X  
break; R(pvUm& L  
SortUtil.swap(queue,j,k); |[!xLqG  
k = j; 'r1&zw(  
} |V!A!tB  
} ,dBtj8=  
s.zH.q,  
} F\-qXSA  
^N Et{]x  
} ]o,)#/' $  
aM?7'8/  
SortUtil: '-w G  
J5J3%6I  
package org.rut.util.algorithm; B+zq!+ HJ  
* +A!12s@  
import org.rut.util.algorithm.support.BubbleSort; &??(EA3  
import org.rut.util.algorithm.support.HeapSort; 5Odi\SJ&  
import org.rut.util.algorithm.support.ImprovedMergeSort; oH6(Lq'q  
import org.rut.util.algorithm.support.ImprovedQuickSort; n6Q 3X  
import org.rut.util.algorithm.support.InsertSort; cY\-e?`=4  
import org.rut.util.algorithm.support.MergeSort; [`ttNW(_  
import org.rut.util.algorithm.support.QuickSort; ,Hys9I  
import org.rut.util.algorithm.support.SelectionSort; Qg9{<0{u  
import org.rut.util.algorithm.support.ShellSort; ~Gwn||g78  
gvA&F |4  
/** Htsa<t F  
* @author treeroot (CZRX9TT1  
* @since 2006-2-2 lzS"NHs<g(  
* @version 1.0 kf"cd 1  
*/ 'ARQ7 Q[`  
public class SortUtil {  r) X?H  
public final static int INSERT = 1; %5F=!( w  
public final static int BUBBLE = 2; *WX6C("M  
public final static int SELECTION = 3; +#&2*nY  
public final static int SHELL = 4; )}WG`  
public final static int QUICK = 5; K3 ]hUe#  
public final static int IMPROVED_QUICK = 6; ,8$;|#d  
public final static int MERGE = 7; m} Yf6:cr  
public final static int IMPROVED_MERGE = 8; u{6*}6@fi  
public final static int HEAP = 9; OY"{XnPZ  
/jj}.X7yH  
public static void sort(int[] data) { 9QY)<K~a  
sort(data, IMPROVED_QUICK); 4,$x~m`N  
} C?hw$^w7T  
private static String[] name={ Q~-gtEv+&  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7;|6g8=  
}; #XJYkaL  
!xe<@$  
private static Sort[] impl=new Sort[]{ C=PBF\RkKu  
new InsertSort(), ;2dhue  
new BubbleSort(), IUu[`\b=  
new SelectionSort(), d54>nycU~N  
new ShellSort(), deeOtco$LT  
new QuickSort(), GVEjB;  
new ImprovedQuickSort(), I[[rVts  
new MergeSort(), "me J n/  
new ImprovedMergeSort(), GueqpEd2  
new HeapSort() I"@5=m5  
}; fWKv3S1dT  
[eWB vAiW  
public static String toString(int algorithm){ uv_*E`pN~  
return name[algorithm-1]; ~f%gW  
} ^lf;Lc  
cHJ &a`;  
public static void sort(int[] data, int algorithm) { M5%u>$2  
impl[algorithm-1].sort(data); M6 0(yTm  
} :_Ng`b/  
7sLs+ |<"  
public static interface Sort { !*pK#  
public void sort(int[] data); o"UqI  
} PkG+`N  
S4?ss I  
public static void swap(int[] data, int i, int j) { +(|T\%$DT  
int temp = data; '{OZ[$E  
data = data[j]; {mkYW-4Se  
data[j] = temp; kTC6fNj[  
} dAAE2}e  
} W"wP%  
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