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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。 8IErLu}  
插入排序: wS*An4%G  
[:cy.K!Uo%  
package org.rut.util.algorithm.support; IMaa#8,  
&5]&6TD6  
import org.rut.util.algorithm.SortUtil; Fa}3UVm  
/** ))y`q@  
* @author treeroot -;/;dz;  
* @since 2006-2-2 +!dWQ=W  
* @version 1.0 ?:D#\4=US  
*/ ZT*RD2,  
public class InsertSort implements SortUtil.Sort{ \'z&7;px  
.h!oo;@  
/* (non-Javadoc) cG)i:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #r\,oXTm  
*/ [,A*nU$  
public void sort(int[] data) { "bI'XaSv  
int temp; B@P +b*%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OEz'&))J  
} G}!dm0s$  
} -6wjc rTD  
} ]njObU)[zr  
T$ <l<.Qd  
} tOn 6  
~s#vP<QHa  
冒泡排序: WCK;r{p%I  
}$6;g-|HX  
package org.rut.util.algorithm.support; s&T"/4  
YVcFCl  
import org.rut.util.algorithm.SortUtil; *G'R+_tdE  
du,mbTQib  
/** \UBTNY,  
* @author treeroot : ,0F_["3  
* @since 2006-2-2 xa7~{ E,  
* @version 1.0 * z,] mi%  
*/ 2vb{PQ  
public class BubbleSort implements SortUtil.Sort{ \Y37wy4  
+48a..4sN  
/* (non-Javadoc) FU;b8{Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QqpXUyHp[  
*/ 8G GC)2  
public void sort(int[] data) { 2)_Zz~P^f  
int temp; ,hMd xZJd  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^oykimYI-  
if(data[j] SortUtil.swap(data,j,j-1); Me*woCos'  
} E=G"_ ^hCE  
} l1<]pdLTR  
} @m#1[n;  
} UbWeE,T~S  
6p=OM=R  
} =f{)!uW<4  
9E@}@ZV(  
选择排序: mA{G: d  
gb_r <j:w  
package org.rut.util.algorithm.support; S,I|8 YE  
BQ[,(T`+R  
import org.rut.util.algorithm.SortUtil; 8-f2$  
M1>2Q[h7  
/** "Uk "  
* @author treeroot 71g\fGG\  
* @since 2006-2-2 *hm;C+<~  
* @version 1.0 kNqIPvuMr  
*/ ^@"H(1Hxu/  
public class SelectionSort implements SortUtil.Sort { ")gd)_FOS  
3U.?Jbm-8  
/* A2C|YmHk  
* (non-Javadoc) ZUkrJ'  
* 4u!<3-3Zy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,_G((oS40  
*/ =1:dKo8  
public void sort(int[] data) { 7W7!X\0Y  
int temp; Zze(Ik  
for (int i = 0; i < data.length; i++) { 1\hh,s  
int lowIndex = i; @i" ^b  
for (int j = data.length - 1; j > i; j--) { TB oN8cB}  
if (data[j] < data[lowIndex]) { 49e~/YY  
lowIndex = j; $y2"Q,n+  
} S yf0dp3  
} Q')0 T>F-  
SortUtil.swap(data,i,lowIndex); Z`W @Od$f  
} K #f*LV5  
} %T_4n^beFQ  
RhL!Z z  
} BGe&c,feIc  
]>:LHW  
Shell排序: <`rl[C{  
yjq~O~  
package org.rut.util.algorithm.support; ^")SU(`  
sF+mfoMtG  
import org.rut.util.algorithm.SortUtil; +!'rw D  
D09/(%4j  
/** e>GX]tK  
* @author treeroot *irYSTA$  
* @since 2006-2-2 [6$n  
* @version 1.0 _NkVi_UX  
*/ _ @U11|  
public class ShellSort implements SortUtil.Sort{ Zn-F!Lsv  
 GD]yP..  
/* (non-Javadoc) 1=9M@r~ ^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B\tP{}P8{  
*/ J7p'_\  
public void sort(int[] data) { <8'-azpJ6<  
for(int i=data.length/2;i>2;i/=2){ U}=o3u  
for(int j=0;j insertSort(data,j,i); K]<49`MX  
} O6P{+xj$  
} 9"#,X36  
insertSort(data,0,1); S<-e/`p=H  
} YhZmyYamE  
sfN6ro  
/** p>O>^R  
* @param data j$he5^GC  
* @param j {dbPMx  
* @param i A<+veqb4  
*/ #y?iUv  
private void insertSort(int[] data, int start, int inc) { -=+@/@nV  
int temp; BnB]]<gO"  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); pow.@  
} U)3*7D  
} 5 wT e?  
} `u *:wJsv  
{FrcpcrQa  
} '/ >7pB  
HqZ3]  
快速排序: (PM!{u=  
$N[R99*x8  
package org.rut.util.algorithm.support; :B(vk3;U!  
 3g#  
import org.rut.util.algorithm.SortUtil; ,f]GOH  
B9&$sTAB  
/** ?Tr]zxtd  
* @author treeroot j\uh]8N3<  
* @since 2006-2-2 cGE,3dsF[  
* @version 1.0 uE}A-\G  
*/ %:DH _0  
public class QuickSort implements SortUtil.Sort{ $&C~Qti|G  
?KKu1~a_  
/* (non-Javadoc) v{T%`WuPRf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p1blPBlp  
*/ vpoYb  
public void sort(int[] data) { 'Pm.b}p<  
quickSort(data,0,data.length-1); SdJGhU  
} SFiK_;  
private void quickSort(int[] data,int i,int j){ |BC/ERms  
int pivotIndex=(i+j)/2; j -R9=vB2  
file://swap aYBc)LCd  
SortUtil.swap(data,pivotIndex,j); !L=RhMI  
(9phRo)>  
int k=partition(data,i-1,j,data[j]); p /x ]  
SortUtil.swap(data,k,j); `> :^c  
if((k-i)>1) quickSort(data,i,k-1); bh~"LQS1  
if((j-k)>1) quickSort(data,k+1,j); T[<deQ  
 u51%~  
} oQS_rv\Ber  
/** U =G}@Y  
* @param data xaSg'8-  
* @param i 68 *~5]  
* @param j ^s;xLGl]  
* @return O #  
*/ @N%/v*  
private int partition(int[] data, int l, int r,int pivot) { b;K]; o-/f  
do{ 6zf3A:]&{  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u |EECjJn  
SortUtil.swap(data,l,r); 8=Z]?D=  
} JR_s-&GaM  
while(l SortUtil.swap(data,l,r); "7. lsL5  
return l; A;'*>NS  
} }nO[;2Na  
it\U+xu  
} }R\9y bv  
ET1>&l:.  
改进后的快速排序: 'cpO"d?{  
qVidubsW  
package org.rut.util.algorithm.support; (3[Lz+W.u  
y. A]un1  
import org.rut.util.algorithm.SortUtil; 2=[deQs  
@#?w>38y  
/** ifYC&5}SI  
* @author treeroot yE6EoC^  
* @since 2006-2-2 n1mqe*Mvs/  
* @version 1.0 :9=J=G*  
*/ EK JPeeRY  
public class ImprovedQuickSort implements SortUtil.Sort { .bT+#x  
^-Knx!z  
private static int MAX_STACK_SIZE=4096; O6Gg?j  
private static int THRESHOLD=10; 6 pQbh*  
/* (non-Javadoc) GY[+HgT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R DAihq  
*/ WL6p+sN'  
public void sort(int[] data) { Y unY'xY  
int[] stack=new int[MAX_STACK_SIZE]; +~H mP Q  
4wa8Vw`  
int top=-1; 7ql&UIeQ  
int pivot; R[/]iK+!&  
int pivotIndex,l,r;  Du*O|  
_]Ei,Ua  
stack[++top]=0; =)p/p6  
stack[++top]=data.length-1; C K{.Ic^  
x,3oa_'E  
while(top>0){ GkutS.2G#  
int j=stack[top--]; HVz,liq  
int i=stack[top--]; ;?A?1q8*  
,XZ[L? >  
pivotIndex=(i+j)/2; 5X'com?T  
pivot=data[pivotIndex]; d:x=g i!  
w ,CZ*/^  
SortUtil.swap(data,pivotIndex,j); )%}?p2.  
dE _I=v  
file://partition x!<?/I)X  
l=i-1; `T;M=S^y*E  
r=j; Hsoe?kUHF  
do{ j(8I+||  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); B_B~Y8=3`  
SortUtil.swap(data,l,r); n<x NE %  
} l*l(QvN_  
while(l SortUtil.swap(data,l,r); 'yWv @)  
SortUtil.swap(data,l,j); dB^')-wA  
cX64 X  
if((l-i)>THRESHOLD){ /y \KLa  
stack[++top]=i; u/D=&"tL  
stack[++top]=l-1; (aO+7ykRuJ  
} )I`6XG  
if((j-l)>THRESHOLD){ igV4nL  
stack[++top]=l+1; y?|JBf  
stack[++top]=j; $X%w9l e  
} XOM@Pi#z  
hE-u9i  
} SGU~LW&  
file://new InsertSort().sort(data); RyGce' q  
insertSort(data); {$<X\\&r  
} ]0HlPP:2  
/** xl(];&A3  
* @param data S> f8j?n  
*/ ?hu$  
private void insertSort(int[] data) { ]< 0|"NL  
int temp; Q6cF <L`bW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <%(nF+rQA"  
} ACg5"  
} PZQb.QAn  
} K4vl#*qn  
'w+T vOB  
} y@|gG&f T  
%#rH~E  
归并排序: ]F@XGJN  
,qgph^C  
package org.rut.util.algorithm.support; i0($@6Lh  
e+z_Rj%Y;I  
import org.rut.util.algorithm.SortUtil; N U*6MT4  
CL*i,9:NR  
/** -Fodqq@,  
* @author treeroot K h}Oiw  
* @since 2006-2-2 A|#9  
* @version 1.0 :[iWl8  
*/ sskwJu1  
public class MergeSort implements SortUtil.Sort{ /?%zNkcxu  
r/E;tm [\  
/* (non-Javadoc) b!Q|0X.?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -.|V S|y  
*/ 7m6@]S6  
public void sort(int[] data) { ^D(N_va<  
int[] temp=new int[data.length]; ) 5r*2I  
mergeSort(data,temp,0,data.length-1); R 2uo ZA,  
}  _2VL%  
<im BFw  
private void mergeSort(int[] data,int[] temp,int l,int r){ /jQW4eW0  
int mid=(l+r)/2; cn$E?&-  
if(l==r) return ; wRL=9/5(8  
mergeSort(data,temp,l,mid); uI7 d?s  
mergeSort(data,temp,mid+1,r); m$xL#omD  
for(int i=l;i<=r;i++){ 2T &<jt  
temp=data; oagxTFh8~  
}  9x/HQ(1  
int i1=l; 9FT;?~,  
int i2=mid+1; cB U,!  
for(int cur=l;cur<=r;cur++){ XSkN9LqZ  
if(i1==mid+1) e%w>QN`  
data[cur]=temp[i2++]; C2;qSKG3{m  
else if(i2>r) 7@u0;5p|  
data[cur]=temp[i1++]; {O,D9<  
else if(temp[i1] data[cur]=temp[i1++]; >OVi{NyT  
else )cnB>Qul  
data[cur]=temp[i2++]; $d M: 5y  
} 6LRI~*F=3  
} &B\tcF  
7pDov@K<{  
} L;=:OX 0  
0[@ 9f1Nk4  
改进后的归并排序: sw{,l"]<  
Jw'%[(q Q  
package org.rut.util.algorithm.support; h4x*C=?A  
/T`L;YE  
import org.rut.util.algorithm.SortUtil; z5PFppSQ  
TQDb\d8,f  
/** _4iTP$7[  
* @author treeroot ;hi+.ng_  
* @since 2006-2-2 W8j)2nKD  
* @version 1.0 6k"'3AKaR  
*/ _IJPZ'Hr  
public class ImprovedMergeSort implements SortUtil.Sort { Ym+k \h  
@EH:4~  
private static final int THRESHOLD = 10; '+ 1<7jl&I  
{7 &(2Z]z  
/* (#FWA<o  
* (non-Javadoc) }R:eKj  
* !4cR&@[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8`Fo^c=j  
*/ Z.+-MNWV  
public void sort(int[] data) { ; mF-y,E  
int[] temp=new int[data.length]; DytH } U"  
mergeSort(data,temp,0,data.length-1); ) Q\nR`k  
} pOQ'k>!  
vwDnz /-  
private void mergeSort(int[] data, int[] temp, int l, int r) { i8pM,Ppi~  
int i, j, k; rH7|r\]r  
int mid = (l + r) / 2; '"LrGvkZ  
if (l == r) UA$ XjP  
return; @ROMHMd}  
if ((mid - l) >= THRESHOLD) .C(Ir  
mergeSort(data, temp, l, mid); GFasGHAw  
else %7 h _D  
insertSort(data, l, mid - l + 1); CrC1&F\dq  
if ((r - mid) > THRESHOLD) ,<n >g;  
mergeSort(data, temp, mid + 1, r); z?`&HU Nf  
else _2+}_ >d  
insertSort(data, mid + 1, r - mid); O_aZ\28};C  
]kA0C~4   
for (i = l; i <= mid; i++) { %[0V>  
temp = data; p Ux ~  
} tr0P ;}=  
for (j = 1; j <= r - mid; j++) { rlr)n\R#  
temp[r - j + 1] = data[j + mid]; p x1y#Q  
} ;n_|t/=  
int a = temp[l]; )$K )`uqb  
int b = temp[r]; hI*gw3V  
for (i = l, j = r, k = l; k <= r; k++) { 8 hx4N  
if (a < b) { NXsDn&&O  
data[k] = temp[i++]; i:W.,w%8  
a = temp; 0A\OZ^P8  
} else { P F#+G;q;  
data[k] = temp[j--]; qeLfO  
b = temp[j]; ~pA_E!3W  
} j\& `  
} <?'d \B  
} 8o43J;mA  
d2sY.L  
/**  ZaJg$  
* @param data Qa@b-v'by  
* @param l $qG;^1$  
* @param i y<(q<V#0!S  
*/ 'fO[f}oa_.  
private void insertSort(int[] data, int start, int len) { "L^]a$&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |PR8P!'  
} &}:'YK*X  
} sy`@q<h(  
} 21'I-j  
} vAWJP_;J  
A\p'\@f  
堆排序: I3`WY-uv  
D/QSC]"  
package org.rut.util.algorithm.support; ;hb;%<xqT  
o1C1F}gxU  
import org.rut.util.algorithm.SortUtil; 6'CZfs\  
|#9Nu9ak  
/** ?O3E.!Q|  
* @author treeroot {FRUB(68b  
* @since 2006-2-2 x=>B 6o-f  
* @version 1.0 l~P%mVC3m  
*/ pu#h:nb>88  
public class HeapSort implements SortUtil.Sort{ buV {O[  
Xc"l')1H  
/* (non-Javadoc) 'J\nvNm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U-~cVk+LI  
*/ fA"N5qQI(  
public void sort(int[] data) { NG3!09eY  
MaxHeap h=new MaxHeap(); >np!f8+d"q  
h.init(data); =rSJ6'2("  
for(int i=0;i h.remove(); BG ,ln(Vz  
System.arraycopy(h.queue,1,data,0,data.length); l;{n" F  
} 5cj]Y)I-~  
.. jc^'L  
private static class MaxHeap{ "#zSk=52z  
0u[Vd:()v(  
void init(int[] data){ #r5IwyL  
this.queue=new int[data.length+1]; @yc/1u $r  
for(int i=0;i queue[++size]=data; dy/\>hu  
fixUp(size); s<3cvF<  
} $sF'Sr{)y  
} S-x'nu$u  
Z;M}.'BE  
private int size=0; D{'>G@nLQ  
h8 Wv t's  
private int[] queue; VF#2I %R*  
,Dh+-}  
public int get() { R1't W=  
return queue[1]; rl:6N*kK  
} {#?$ p i[  
nV`n=x  
public void remove() { R<\5 q%@G  
SortUtil.swap(queue,1,size--); Nf@-i`  
fixDown(1); /hrVnki*  
} W`^euBr7R>  
file://fixdown ?a)X)#lQ  
private void fixDown(int k) { NT(gXEZ  
int j; = ;tDYuFc!  
while ((j = k << 1) <= size) { 96a2G,c >V  
if (j < size %26amp;%26amp; queue[j] j++; >.sdLA Si  
if (queue[k]>queue[j]) file://不用交换 .kbo]P  
break; (i3V  
SortUtil.swap(queue,j,k); pTzwyj!SD  
k = j; !u)>XS^E  
} A=N &(k  
} %P3|#0yg0  
private void fixUp(int k) { !V%h0OE\  
while (k > 1) { <H; z4  
int j = k >> 1; rN$U%\.I  
if (queue[j]>queue[k]) V1yY>  
break; FCr^D$_w  
SortUtil.swap(queue,j,k); dWR-}>  
k = j; a,$v;s/  
} XIep3l*  
} blVt:XS{,m  
<R;t>~8x  
} MC'2;,  
9` a1xnL  
} tVUC@M>'  
r%:Q(|v?  
SortUtil: E*B6k!:  
-(oFO'Lbg  
package org.rut.util.algorithm; Z 91{*?  
cr wui8  
import org.rut.util.algorithm.support.BubbleSort; ^i"~6QYE  
import org.rut.util.algorithm.support.HeapSort; ce&Q}_  
import org.rut.util.algorithm.support.ImprovedMergeSort;  AhyV  
import org.rut.util.algorithm.support.ImprovedQuickSort; pYRqV  
import org.rut.util.algorithm.support.InsertSort; (GCeD-  
import org.rut.util.algorithm.support.MergeSort; _L^(CFE  
import org.rut.util.algorithm.support.QuickSort; 4uX|2nJ2!;  
import org.rut.util.algorithm.support.SelectionSort; Y^Y1re+}  
import org.rut.util.algorithm.support.ShellSort; hx.ln6=4  
K|Cb6''  
/** H{d;, KfX  
* @author treeroot qH=<8Iu  
* @since 2006-2-2 q,Nhfo(  
* @version 1.0 7{BTtUMAC  
*/ 78MQoG<  
public class SortUtil { swTur  
public final static int INSERT = 1; Y[R;UJE`5  
public final static int BUBBLE = 2; \3hj/   
public final static int SELECTION = 3; Gi+ZI{)  
public final static int SHELL = 4; #Fwf]{J  
public final static int QUICK = 5; ):L ; P)  
public final static int IMPROVED_QUICK = 6; ZzO^IZKlC  
public final static int MERGE = 7; !H^e$BA  
public final static int IMPROVED_MERGE = 8; x & ZW f?  
public final static int HEAP = 9; AE@N:a  
k|r|*|8  
public static void sort(int[] data) { } \?]uNH  
sort(data, IMPROVED_QUICK); |y%M";MI  
} +EOd9.X\~  
private static String[] name={ |=rb#z&  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L60Sc  
}; hM NC]  
{aoG60N  
private static Sort[] impl=new Sort[]{ P$H9  
new InsertSort(), ;%<R>gDWv  
new BubbleSort(), P 5_ l&  
new SelectionSort(), Nu[0X  
new ShellSort(), .QLjaEja  
new QuickSort(), l\DcXgD x  
new ImprovedQuickSort(), aWk1D.  
new MergeSort(), Ls2g#+  
new ImprovedMergeSort(), $v\o14 v  
new HeapSort() L3J .Oh  
}; *Z}9S9YtN  
d) $B  
public static String toString(int algorithm){ #HyE-|_C  
return name[algorithm-1]; %SC%#_7  
} s;Sv@=\  
gCP f1z  
public static void sort(int[] data, int algorithm) { pRc<U^Z.h  
impl[algorithm-1].sort(data); (> VD#n  
} ^77X?nDz=h  
,@Aeo9}  
public static interface Sort { Z~Vups#+f  
public void sort(int[] data); aTi,gJ;*  
} *Fu;sR2y%:  
P{%R*hb]  
public static void swap(int[] data, int i, int j) { U2HAIV8  
int temp = data; <MzXTy3\  
data = data[j]; X(dHh O  
data[j] = temp; N)Qz:o0W  
} rLx'.:  
} d[$YTw  
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