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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。 :\gdQG  
插入排序: mI?AI7DqK  
57rc|]C  
package org.rut.util.algorithm.support; -=2tKH`Q  
0zdH6 &  
import org.rut.util.algorithm.SortUtil; ~#7=gI&p@  
/** oM Q+=  
* @author treeroot *|ubH?71%Y  
* @since 2006-2-2 I}$Y[Jve  
* @version 1.0 n$B=Vt,  
*/ c?j/ H$  
public class InsertSort implements SortUtil.Sort{ ~ B1)!5Z  
#.#T+B+9  
/* (non-Javadoc) ZVk_qA%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /oE@F178  
*/ \_CC6J0k  
public void sort(int[] data) { [y64%|m  
int temp; d#Ql>PrY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l>H#\MR  
} Z[Uz~W6M]  
} eBBqF!WDb  
} mp>,TOi~s7  
qAHQZKk  
} >t3%-Kc  
T" XZ[q  
冒泡排序: -7$7TD`'7  
DMsxHAE1  
package org.rut.util.algorithm.support; QUwSnotgU  
sHmzwvpLA  
import org.rut.util.algorithm.SortUtil; g]N!_Ib/!  
vRYfB{~  
/** *Xn{{  
* @author treeroot *oKc4S+  
* @since 2006-2-2 b~WiE?  
* @version 1.0 pa4zSl  
*/ Rs8^ 27  
public class BubbleSort implements SortUtil.Sort{ gW$X8ECX  
`o)rAD^e  
/* (non-Javadoc) %F]4)XeW-+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K;k&w; j  
*/ q0SYV  
public void sort(int[] data) { $0+AR)  
int temp; {D 9m// x  
for(int i=0;i for(int j=data.length-1;j>i;j--){ e4j:IK>  
if(data[j] SortUtil.swap(data,j,j-1); 7GB>m}7  
} &r;-=ASYzV  
} TW7jp  
} _>S."cm}!k  
} pmv;M`_|R  
4D0=3Vy  
} T:q!>"5  
tF+m/}PM^  
选择排序: 294 0M4  
QcU&G*   
package org.rut.util.algorithm.support; u|BD=4*  
*G7/  
import org.rut.util.algorithm.SortUtil; )!s f@F?  
{D={>0  
/** JS1$l+1  
* @author treeroot U\*}}   
* @since 2006-2-2 rB}Iwp8  
* @version 1.0 Lf4c[[@%gd  
*/ [z'PdYQR/{  
public class SelectionSort implements SortUtil.Sort { wi|'pKG  
I'Ui` :A  
/* -iLp3m<ai  
* (non-Javadoc) -hZlFAZi  
* 9nu!|reS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &Egw94l  
*/ \_bk+}WJ]s  
public void sort(int[] data) { ( d#E16y  
int temp; >TK:&V  
for (int i = 0; i < data.length; i++) { \Z{6j&;  
int lowIndex = i; \7 n ;c   
for (int j = data.length - 1; j > i; j--) { 3WHj|ENW  
if (data[j] < data[lowIndex]) { =aX;-  
lowIndex = j; z/dpnGX  
} (P%{Tab  
} 7k.=_Tl  
SortUtil.swap(data,i,lowIndex); @eU;oRVc{  
} =]X_wA;%  
} ]|KOc& y:I  
zy^t95/m  
} ecfw[4B`  
6q-X$  
Shell排序: o EXN$SIs  
4! ]28[2B6  
package org.rut.util.algorithm.support; ixm-wZI  
}TI"j{(QJ  
import org.rut.util.algorithm.SortUtil; E4idEQ}H  
I?<5 %  
/** GTgG0Ifeh  
* @author treeroot 8vpB(VxV+  
* @since 2006-2-2 #e|G!'wdj  
* @version 1.0 lgWEB3f .  
*/ {]-AuC2E/0  
public class ShellSort implements SortUtil.Sort{ ' 5`w5swbc  
Ac{"$P`  
/* (non-Javadoc) jrJ!A(<)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u*u3<YQ  
*/ 6AD#x7drj  
public void sort(int[] data) { X` r~cc  
for(int i=data.length/2;i>2;i/=2){ | >X5@  
for(int j=0;j insertSort(data,j,i); A/:^l%y,GZ  
} =]i[gs)B  
} ^Y[.-MJt+  
insertSort(data,0,1); qtlXDgppO  
} `>'%!E9G  
: E`/z@I  
/** 4}-{sS}MP  
* @param data +||y/}1  
* @param j <~s{&cL!%#  
* @param i *f<+yF{=A  
*/ .S4c<pMap  
private void insertSort(int[] data, int start, int inc) { Y=0D[o8  
int temp; #2 Gy=GvV  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7-S?\:J  
} b{4@ ~>i  
} +OEqDXR+_  
} nbd-f6F6  
dA4DW  
} ?D[9-K4Vn  
SWwL.-+E]  
快速排序: nSR7$yS_  
9=RfGx  
package org.rut.util.algorithm.support; A:Y ([  
XM?>#^nC?u  
import org.rut.util.algorithm.SortUtil; P?WS=w*O0  
.t53+<A  
/** -(~OzRfYi  
* @author treeroot %)'# d  
* @since 2006-2-2 5 1&||.  
* @version 1.0 olLVT<  
*/ q%&JAX=  
public class QuickSort implements SortUtil.Sort{ ' tyblj C  
d-k`DJ!  
/* (non-Javadoc) )DG>omCY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) naOCa  
*/ 4gKu8G  
public void sort(int[] data) { WK$d<:"  
quickSort(data,0,data.length-1); g+v.rmX  
} $F&m('aB8  
private void quickSort(int[] data,int i,int j){ >`{B  
int pivotIndex=(i+j)/2; 4 q-/R  
file://swap yzI`&? P2  
SortUtil.swap(data,pivotIndex,j); bn*SLWWQ.3  
d-%bRGo/  
int k=partition(data,i-1,j,data[j]); #LU<v  
SortUtil.swap(data,k,j); "|k 4<"]  
if((k-i)>1) quickSort(data,i,k-1); NAg9EaWja{  
if((j-k)>1) quickSort(data,k+1,j); HgY [Q}7s  
8_*31Y   
} 2?c##Izn  
/** ]:"<if gp$  
* @param data LZR x>q^  
* @param i fGtYvl O-5  
* @param j &AUtUp kOo  
* @return M0) q  
*/ Po B-:G6  
private int partition(int[] data, int l, int r,int pivot) { ,y>Sq +  
do{ u$M,&Om  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); qnc?&f  
SortUtil.swap(data,l,r); oeKVcVP|'&  
} v~.nP} E^  
while(l SortUtil.swap(data,l,r); ?Sj >b   
return l; :)*+ aS"  
} <y`M Upf]  
,;D$d#\"  
} Acix`-<  
C srxi'Pe  
改进后的快速排序: NpPuh9e{  
j-$F@p_2F  
package org.rut.util.algorithm.support; `>1XL2  
\img   
import org.rut.util.algorithm.SortUtil; Ga$J7 R  
NB^+Hcb$  
/** ojva~mnFf  
* @author treeroot +`RQ ^9  
* @since 2006-2-2 3u,CI!  
* @version 1.0 _Jt  
*/ ?zP/i(1y  
public class ImprovedQuickSort implements SortUtil.Sort { xCTPsw]s  
I5%#A/|z  
private static int MAX_STACK_SIZE=4096; ]Y.GU7`  
private static int THRESHOLD=10; C0`Bi:Ze  
/* (non-Javadoc) zhdS6Gk+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $S6%a9m   
*/ gfr+`4H>v  
public void sort(int[] data) { (/ qOY  
int[] stack=new int[MAX_STACK_SIZE]; x$L(!ZDh  
2j=i\B  
int top=-1; ]_5qME#N  
int pivot; " ZYdJHM  
int pivotIndex,l,r; sF4+(9=  
U0J_ 3W  
stack[++top]=0; ^Ay>%`hf*  
stack[++top]=data.length-1; `uh+d  
oE.59dx  
while(top>0){ a #`Y(R'  
int j=stack[top--]; G2y`yg  
int i=stack[top--]; ? h |&kRq  
6k9cvMs%H  
pivotIndex=(i+j)/2; g15~+;33N  
pivot=data[pivotIndex]; YQ-!>3/)-  
)W,.xP  
SortUtil.swap(data,pivotIndex,j); @{q:179w^  
cF V[k'F  
file://partition +Y! P VMF  
l=i-1; om oD +  
r=j; nl)l:A+q8  
do{ "p@EY|Zv%I  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "xdu h3/~=  
SortUtil.swap(data,l,r); fMm.V=/+  
} =pk5'hBAi  
while(l SortUtil.swap(data,l,r); p6c&vEsNj  
SortUtil.swap(data,l,j); 1DR ih>+#  
kMx^L;:n  
if((l-i)>THRESHOLD){ @>Bgld&vl  
stack[++top]=i;  eQU~A9  
stack[++top]=l-1; SNOML7pd  
}  DJJd_  
if((j-l)>THRESHOLD){ MXa(Oi2Gg  
stack[++top]=l+1; j;yKL-ycB  
stack[++top]=j; p>=i'~lQ6  
} V'^E'[Dd{  
/UG]hJ-wn  
} vrq5 +K&||  
file://new InsertSort().sort(data); +l27y0>t  
insertSort(data); vq` M]1]FO  
} +(U;+6 b  
/** csjCXT=Ve  
* @param data <N(r -  
*/ 90Bn}@t=Q  
private void insertSort(int[] data) { *8Kx y@  
int temp; vdaG?+_o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s9rKXY',:l  
} M.o H,Kd6  
} &WKAg:^k)  
} d=C&b]  
Q+7+||RW  
} z]/!4+  
.LI(2lP  
归并排序:  7CwQmVe+  
Ib(G!oO:E-  
package org.rut.util.algorithm.support; 92(P~Sdv  
n@$("p  
import org.rut.util.algorithm.SortUtil; 6PyW(i(bs  
`lcQ Yd<,4  
/** ,(3oAj\  
* @author treeroot 2DNB?,uP,'  
* @since 2006-2-2 A}4 ",  
* @version 1.0 x8!uI)#tS  
*/ lj /IN[U/  
public class MergeSort implements SortUtil.Sort{ QAzwNXE+  
POI|#[-V  
/* (non-Javadoc) q:MSV{k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k+@,m\tE  
*/ 8J)Kn4jq  
public void sort(int[] data) { 3}2;*:p4Y  
int[] temp=new int[data.length]; lBzfBmEB  
mergeSort(data,temp,0,data.length-1); ><xJQeW  
} eb>jT:  
lOy1vw'  
private void mergeSort(int[] data,int[] temp,int l,int r){ <nU8.?\?~  
int mid=(l+r)/2; H7 "r^s]D  
if(l==r) return ; e<$s~ UXv  
mergeSort(data,temp,l,mid); ^{Fo,7  
mergeSort(data,temp,mid+1,r); }2hU7YWt  
for(int i=l;i<=r;i++){ NjbIt=y  
temp=data; 2jF}n*[OW  
} 8ByNaXMO6  
int i1=l; u<JkP <"S  
int i2=mid+1; x~QZVL=:  
for(int cur=l;cur<=r;cur++){ ntQW+!s;P  
if(i1==mid+1) /:@)De(S  
data[cur]=temp[i2++]; 6~OJB!  
else if(i2>r) kgHZaQnD  
data[cur]=temp[i1++]; ?kULR0uL+  
else if(temp[i1] data[cur]=temp[i1++]; W3gHz T?{  
else H=*lj.x  
data[cur]=temp[i2++]; O>"T*   
} ~"VM_Lz]5  
} ue1g(;  
n0QHrIf{  
} b!<)x}-t>  
JAX`iQd  
改进后的归并排序: \h/)un5  
fTt\@" V  
package org.rut.util.algorithm.support; &NX7  
Qp9QS yMs}  
import org.rut.util.algorithm.SortUtil; 8ZCR9%  
b}&.IJ&40j  
/** eD|"?@cE  
* @author treeroot !u;gGgQF  
* @since 2006-2-2 MZ?+I~@  
* @version 1.0 TVF:z_M9  
*/ Vn65:" O  
public class ImprovedMergeSort implements SortUtil.Sort { M(1cf(<+  
n_(f"U v  
private static final int THRESHOLD = 10; hkOFPt&  
y3':x[d  
/* _jb&=f8  
* (non-Javadoc) "R\D:Olb#  
* ,3 [FD9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t?H sfN  
*/ mNlbiB  
public void sort(int[] data) {  7LB%7~{<  
int[] temp=new int[data.length]; @KRia{  
mergeSort(data,temp,0,data.length-1); `CRF E5  
} {:#c1d2@8  
j\HZ5  
private void mergeSort(int[] data, int[] temp, int l, int r) { #^tnRfS"  
int i, j, k; %]1te*_  
int mid = (l + r) / 2; |]~],  
if (l == r) |\xTcS|d  
return; Aho-\9/x%  
if ((mid - l) >= THRESHOLD) mV0u:ws  
mergeSort(data, temp, l, mid); 7x]q>Y8T  
else -jzoGzC3  
insertSort(data, l, mid - l + 1); U]W "  
if ((r - mid) > THRESHOLD) {55f{5y3 c  
mergeSort(data, temp, mid + 1, r); H<tU[U=G  
else "xNP"S  
insertSort(data, mid + 1, r - mid); i91k0q*di  
TR%8O;  
for (i = l; i <= mid; i++) { 7m%[$X`  
temp = data; BMtk/r/  
} &dPI<HlM  
for (j = 1; j <= r - mid; j++) { N8DouDq  
temp[r - j + 1] = data[j + mid]; d@tf+_Ih  
}  A"1%E.1  
int a = temp[l]; .7M.bpmqE  
int b = temp[r]; SkmKf~v  
for (i = l, j = r, k = l; k <= r; k++) { *zMt/d*<&  
if (a < b) { Jp c %i8  
data[k] = temp[i++]; /A+5q\8G  
a = temp; /Ny#+$cfk  
} else { hj\A-Yf  
data[k] = temp[j--]; bYmk5fpRG  
b = temp[j]; &fsk ESV0  
} wD /jN:  
} Dw>)\\n{Kl  
} QQ=Kj%R  
<\$?.tTZ {  
/** &Xc=PQ:I  
* @param data IgRi(q^b-  
* @param l P4LiU2C  
* @param i bM2x (E\O  
*/ 7{]L{j-  
private void insertSort(int[] data, int start, int len) { MEM(uBYKOb  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); fCZ"0P3(  
} ,J=lHj  
} l;$FR4}d  
} f\r"7j  
} =:t<!dp  
noLr185  
堆排序: }57Jn5&'  
b|*+!v:I>T  
package org.rut.util.algorithm.support; aPRMpY-YC3  
/ U!xh3  
import org.rut.util.algorithm.SortUtil; KE~.f(  
2`rJr  
/** omznSL  
* @author treeroot 'V8o["P  
* @since 2006-2-2 0+[3>Ny 0  
* @version 1.0 `l6OQdB3W  
*/ 0~P]Fw^w  
public class HeapSort implements SortUtil.Sort{ ;mg.} fI  
 FLZ9Rg  
/* (non-Javadoc) s:cJF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #K*p1}rf  
*/ pNZ3vTs6  
public void sort(int[] data) { ^=a:{["@!  
MaxHeap h=new MaxHeap(); A-d<[@d0  
h.init(data); Z78i7k}  
for(int i=0;i h.remove(); Sy]W4%  
System.arraycopy(h.queue,1,data,0,data.length); wn|;Li  
} H/k]u)Gtv  
Y]^*mc0fE  
private static class MaxHeap{ FS!9 j8  
_z1Qr?cY  
void init(int[] data){ 7IQa Xcl  
this.queue=new int[data.length+1]; 'T(Q  
for(int i=0;i queue[++size]=data; |onLJY7)  
fixUp(size); {NcJL< ;tS  
} VbTX;?  
} |`pBI0Sjo  
<WnIJum  
private int size=0; X]n`YF7  
xAO\'#m  
private int[] queue; df {\O* 6  
Ujqnl>l  
public int get() { /Dyig  
return queue[1]; \Ui8gDJ8y5  
} )T?BO  
,7 m33Pv*  
public void remove() { _\8E/4zh  
SortUtil.swap(queue,1,size--); -SLk8x  
fixDown(1); _zzT[}  
} ,L<x=Dg  
file://fixdown G(wstHT;/  
private void fixDown(int k) { 2Dt^W.!  
int j; N"tX K  
while ((j = k << 1) <= size) {  DZ4gp  
if (j < size %26amp;%26amp; queue[j] j++; 9Y2.ob!$}  
if (queue[k]>queue[j]) file://不用交换 D=Nt 0y  
break; x>,wmk5)  
SortUtil.swap(queue,j,k); dcTZL$  
k = j; #xq3 )B  
} XH0o8\.  
} y|i(~  
private void fixUp(int k) { r_FI5f  
while (k > 1) { u~ VXe  
int j = k >> 1; MmU`i ,z  
if (queue[j]>queue[k])  Hyenn  
break; ,Z :2ba  
SortUtil.swap(queue,j,k); eD3\>Y.z  
k = j; C3N1t  
} YMy**  
} W#kyD)(F  
iQ1[60?)T  
} Z0O0Q=e\Y  
VC_F Cz  
} =v!Z8zk=W  
8kr$w$=q  
SortUtil: 9$qw&j[  
[6 "5  
package org.rut.util.algorithm; HRQfT>"/  
+fKV/tSWi  
import org.rut.util.algorithm.support.BubbleSort; ;8 *"c  
import org.rut.util.algorithm.support.HeapSort; ;CoD5F!  
import org.rut.util.algorithm.support.ImprovedMergeSort; T00sYoK  
import org.rut.util.algorithm.support.ImprovedQuickSort; ~IPATG  
import org.rut.util.algorithm.support.InsertSort; U%Hcc k'  
import org.rut.util.algorithm.support.MergeSort; nv7)X2jja  
import org.rut.util.algorithm.support.QuickSort; }sJ}c}b  
import org.rut.util.algorithm.support.SelectionSort; :Ig9n :  
import org.rut.util.algorithm.support.ShellSort; YHke^Ind  
(CtRU   
/** *a0#PfS[  
* @author treeroot aIr"!. 4  
* @since 2006-2-2 Sn 7 h$  
* @version 1.0 K6)IBV;  
*/ I>w|80%%  
public class SortUtil { 'vZy-qHrV  
public final static int INSERT = 1; EZVgTySd  
public final static int BUBBLE = 2; p2fzbBt  
public final static int SELECTION = 3; t$p%UyVE  
public final static int SHELL = 4; F9tWJJUsr  
public final static int QUICK = 5; 53.jx38xS  
public final static int IMPROVED_QUICK = 6; #6mw CA|  
public final static int MERGE = 7; =h?%<2t9<  
public final static int IMPROVED_MERGE = 8; C OL"/3r  
public final static int HEAP = 9; Fi7~JZZ  
R<hsG%BS(D  
public static void sort(int[] data) { X+ybgB4(  
sort(data, IMPROVED_QUICK); cG3tn&AXi  
} 09 f;z  
private static String[] name={ MSp) Jc  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" tu@-+< *  
}; N6T  
!}c\u  
private static Sort[] impl=new Sort[]{ cRCji^,KJ  
new InsertSort(), "(~fl<;  
new BubbleSort(), OwgPgrV  
new SelectionSort(), !\$4A,  
new ShellSort(), \{Je!#  
new QuickSort(), Lm.N {NV'  
new ImprovedQuickSort(), ;*U&lT  
new MergeSort(), V`i(vC(  
new ImprovedMergeSort(), Zs;c0T ">  
new HeapSort() 7TU77  
}; 9"/=D9o9  
\l# H#~  
public static String toString(int algorithm){ %m/5! "  
return name[algorithm-1]; {A%&D^o)  
} Xi+l1xe  
.)1u0 (?  
public static void sort(int[] data, int algorithm) { {}gL*2:EW$  
impl[algorithm-1].sort(data); *IF ~ab2  
} V' i@N  
<h<_''+  
public static interface Sort { !+YSc&R_fW  
public void sort(int[] data); 1gvh6eE F  
} hh.`Yu L  
LW/> %  
public static void swap(int[] data, int i, int j) { ]n'.}"8Kn  
int temp = data; +(w9! 5?F  
data = data[j]; 5-'Z.[ImB?  
data[j] = temp; ?i!d00X  
} >>;He7  
} >m=XqtP  
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