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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。 {M96jjiInf  
插入排序: DpH+lpC  
F~2bCy[Z  
package org.rut.util.algorithm.support; s4/4o_[W  
kHygif !I4  
import org.rut.util.algorithm.SortUtil; t<wjS|4  
/** eW, {E)x:  
* @author treeroot ?zGx]?1P1<  
* @since 2006-2-2 %wWJVq}jx  
* @version 1.0 |*ss`W7F,2  
*/ n]^zIe^6  
public class InsertSort implements SortUtil.Sort{ _GS_R%b  
tBC`(7E}  
/* (non-Javadoc) n@xC?D:t*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t% Sgw%f  
*/ >W Tn4SW@  
public void sort(int[] data) { /k8Lu+OJ  
int temp; :}'5'oVG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); blO(Th&  
} yuIy?K  
} SO @d\H  
} n-zAkKM  
E/[>#%@i  
} 'D_a2xo0  
IAyyRl\  
冒泡排序: |H-%F?<{  
OlRtVp1  
package org.rut.util.algorithm.support; y7pwYRY  
t5O '7x  
import org.rut.util.algorithm.SortUtil; tVfZ~q J  
sg YPR  
/** O2xbHn4  
* @author treeroot bu0i #  
* @since 2006-2-2 g0({$2Q7R  
* @version 1.0 m\zCHX#n  
*/ 5@QJ+@j|  
public class BubbleSort implements SortUtil.Sort{ ~mBY_[_s=  
|D*a"*1+A  
/* (non-Javadoc) -gn!8G1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UHyGW$B  
*/ -@7?N6~qZx  
public void sort(int[] data) { ?+)>JvWDz  
int temp; >]{{5oOQ>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 88x2Hf5I  
if(data[j] SortUtil.swap(data,j,j-1); ?)NgODU  
} osM[Xv  
} F\u]X  
} ;t~Y>,  
} d+45Y,|  
y^0 mf|  
} E!A+J63zsw  
8I8{xt4   
选择排序: / jLb{Ky  
&s#OiF8  
package org.rut.util.algorithm.support; B_DyH C\<  
mX2X.ww(4  
import org.rut.util.algorithm.SortUtil; `y3*\l  
.(^%M 2:6  
/** 4V<.:.k  
* @author treeroot U| T}0  
* @since 2006-2-2 ajCe&+  
* @version 1.0  sWyx_  
*/ b.q/? Yx  
public class SelectionSort implements SortUtil.Sort { 7Y?59 [  
t/lQSUip  
/* \E {'|  
* (non-Javadoc) :]icW ^%  
* `3eQ#,G!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h e=A%s  
*/ '2qbIYanh  
public void sort(int[] data) { Ts\PZQ!q  
int temp; `*o ko[\3  
for (int i = 0; i < data.length; i++) { Fs}B\R/J  
int lowIndex = i; ,\ -4X  
for (int j = data.length - 1; j > i; j--) { Zd| u>tn  
if (data[j] < data[lowIndex]) { u g_c}Nv=Y  
lowIndex = j; ),>whCtsI  
} CZ!gu Y=  
} W K(GR\@  
SortUtil.swap(data,i,lowIndex); %!7A" >ai  
} Cp?6vu|RA  
} (M?VB*sm0  
C1#f/o->  
} t*`G@Nj  
RDU 'l^  
Shell排序: gj7'4 3 ?W  
vA{DF{S 4  
package org.rut.util.algorithm.support; #nQboTB@  
Wt=%.Y( x  
import org.rut.util.algorithm.SortUtil; :2lM7|@/  
PkOtg[Z  
/** z-|d/#h  
* @author treeroot V.!z9AQ  
* @since 2006-2-2 U9Lo0K  
* @version 1.0 cr!sq.)s  
*/ ;?gR,AKZ  
public class ShellSort implements SortUtil.Sort{ -}5dZ;  
#b1/2=PA  
/* (non-Javadoc) $cGV)[KWp@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hAB:;r XlI  
*/ i;67< f}-  
public void sort(int[] data) { j[w5#]&%  
for(int i=data.length/2;i>2;i/=2){ WWA!_  
for(int j=0;j insertSort(data,j,i); 1! R:}r3t  
} 3H5<w4yk  
} fM<g++X  
insertSort(data,0,1); %%Wn:c>  
} /j:-GJb*!u  
s=XqI@  
/** \U?{m)N  
* @param data FFc?Av?_  
* @param j 6o GF6C  
* @param i Z?'?+48xv4  
*/ c+u) C%g  
private void insertSort(int[] data, int start, int inc) { Byns6k  
int temp; Z15b'^)?9  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <gSZ<T  
} g@S?5S.Av  
} ^^(4xHN  
} +'D #VG  
f>+:UGmP  
} zj'uKBDl  
mvBUm-X  
快速排序: !'%`g,,r  
JZ0u/x5  
package org.rut.util.algorithm.support; QLyBP!X-  
C9 cQ} j:  
import org.rut.util.algorithm.SortUtil; _6'HBE  
Z+x`q#ZQr  
/** " ZFK-jn/  
* @author treeroot *mXs(u  
* @since 2006-2-2 2o-Ie/"d\  
* @version 1.0 TWJ%? /d  
*/ ,46k8%WW  
public class QuickSort implements SortUtil.Sort{ )Waz bT@  
Q u@T}Ci  
/* (non-Javadoc) 97(*-e=e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "npLl]XM  
*/ m-!Uy$yM  
public void sort(int[] data) { )~[hf,R5S  
quickSort(data,0,data.length-1); mGqT_   
} giz#(61j^  
private void quickSort(int[] data,int i,int j){ ].<B:]:,  
int pivotIndex=(i+j)/2; *f$wmZ5A  
file://swap =`6_{<&  
SortUtil.swap(data,pivotIndex,j); y2 ,M9  
)F) (Hg  
int k=partition(data,i-1,j,data[j]); S-k:+4  
SortUtil.swap(data,k,j); }Qm: g  
if((k-i)>1) quickSort(data,i,k-1); o Kfm=TbY  
if((j-k)>1) quickSort(data,k+1,j); *_7%n-k  
%2D9]L2Up  
} Th)Z?\8zk  
/** d% :   
* @param data ix]t>2r  
* @param i Q)s[ls  
* @param j mxJ& IV  
* @return h|j $Jy  
*/ 3KW4 ]qo~  
private int partition(int[] data, int l, int r,int pivot) { <wZ2S3RNA  
do{ Xn 1V1sr  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); A7qKY-4B  
SortUtil.swap(data,l,r); .`3O4]N[  
} 8=U0\<wT  
while(l SortUtil.swap(data,l,r); <,!e*V*U  
return l; |8m;}&r$  
} 3b2[i,m<L  
Gd8FXk,.!  
} zFqlTUD`t  
|aovZ/b4  
改进后的快速排序: x$;I E  
<!s+X_^  
package org.rut.util.algorithm.support; .A. VOf_  
ShV#XnQ  
import org.rut.util.algorithm.SortUtil; TUQ+?[  
Is $I;`  
/** {T^"`%[   
* @author treeroot <n)J~B^  
* @since 2006-2-2 `H.~ # $  
* @version 1.0 c05kHB$O  
*/  TM1isZ  
public class ImprovedQuickSort implements SortUtil.Sort { ur,!-t(~t  
:4f>S) m  
private static int MAX_STACK_SIZE=4096; s^@?+<4:  
private static int THRESHOLD=10; 3:Mq4 0]x  
/* (non-Javadoc) 9Q<8DMX^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) McRAy%{z  
*/  {hzU  
public void sort(int[] data) { Vy:I[@6@+  
int[] stack=new int[MAX_STACK_SIZE]; ^]&uMkPN  
7<<-\7`  
int top=-1; QgZwU$`p0  
int pivot; 4;]<#u  
int pivotIndex,l,r; =q1=.VTn  
7*9a`p3w  
stack[++top]=0; X0\2qD  
stack[++top]=data.length-1; 4&}V3"lg  
Ho}"8YEXNV  
while(top>0){ x}Y  
int j=stack[top--]; `OL@@`'^{S  
int i=stack[top--]; E<j}"W$a  
cjf 8N:4N0  
pivotIndex=(i+j)/2; 3D"2yTM(  
pivot=data[pivotIndex]; |Va*=@&6J  
 kYls jM  
SortUtil.swap(data,pivotIndex,j); eI+<^p_j2  
-YXNB[C  
file://partition 9Q~9C9{+  
l=i-1; >Mu I-^ 3  
r=j; \~sc6ho  
do{ i `m&X6)\j  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,buSU~c_Q  
SortUtil.swap(data,l,r); 3pxZk%  
} w\"~ *(M  
while(l SortUtil.swap(data,l,r); "!ZQ`yl  
SortUtil.swap(data,l,j); tx,_0[hZi  
UZ5O%SF  
if((l-i)>THRESHOLD){ e\0vphS6  
stack[++top]=i; `D44I;e^1;  
stack[++top]=l-1; <Km ^>9  
} U$*AV<{%   
if((j-l)>THRESHOLD){ 3 291"0  
stack[++top]=l+1; N\,[(LbA&  
stack[++top]=j; -YDA,.Ic?  
} ;6 ?a8t@  
JPH! .@  
} 7U9*-9  
file://new InsertSort().sort(data); xRX2u_f$<  
insertSort(data); 1@dB*Jt  
} t5| }0ID-  
/** m4 k:uk7N  
* @param data kB)u@`</mV  
*/ ]9 JLu8GO  
private void insertSort(int[] data) { -> ^Ex`  
int temp; `!udU,|N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tJM#/yT  
} bu?4$O  
} 2;wp D2  
} &<=?O a  
9-W3}4'e  
} AMw#_8Y  
;u8a%h!  
归并排序: .E:3I!dH7  
*8bj3A]vf  
package org.rut.util.algorithm.support; VLfc6:Yg  
[.(,v n?6  
import org.rut.util.algorithm.SortUtil; /E39Z*  
Ka_g3  
/** z/I\hC9i  
* @author treeroot 3'7]jj  
* @since 2006-2-2 /szwVA  
* @version 1.0 ;*G';VuT  
*/ qs%UJ0tR  
public class MergeSort implements SortUtil.Sort{ 'ti~TG  
-d.i4X3j  
/* (non-Javadoc) *x &  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 64L;np>  
*/ 4;bc!> sfC  
public void sort(int[] data) { U2Tw_  
int[] temp=new int[data.length]; 9Tg k=  
mergeSort(data,temp,0,data.length-1); Y3 \EX  
} :jf/$]p  
T)I\?hqTB  
private void mergeSort(int[] data,int[] temp,int l,int r){ 6lPuYEmT  
int mid=(l+r)/2; SajG67  
if(l==r) return ; {4$aA*  
mergeSort(data,temp,l,mid); X<D fzd oI  
mergeSort(data,temp,mid+1,r); uznYLS  
for(int i=l;i<=r;i++){ ? *v*fs0  
temp=data; ^;9<7 h[l  
} O I0N(V  
int i1=l; KO\-|#3y>  
int i2=mid+1; tVe =c  
for(int cur=l;cur<=r;cur++){ =axuLP))  
if(i1==mid+1) 8 (ot<3(D  
data[cur]=temp[i2++]; kWacc&*|  
else if(i2>r) .Y0O.  
data[cur]=temp[i1++]; lNsdbyV'  
else if(temp[i1] data[cur]=temp[i1++]; [1Aoj|  
else i6f42]Jy  
data[cur]=temp[i2++]; N^M6*,F,J  
} &lgzNC9g%  
} WH"'Ju5}  
lCgzQZ  
} BIS.,  
MGf*+!y,  
改进后的归并排序: JeN]sK)8x  
pss e^rFg  
package org.rut.util.algorithm.support; fk9q3  
'"+Gn52#  
import org.rut.util.algorithm.SortUtil; %{7*o5`  
+_{cq@c  
/** DgK*> A  
* @author treeroot M~7Cb>%<  
* @since 2006-2-2 Fe %Vp/  
* @version 1.0 +p`BoF9~  
*/ xC9{hXg!  
public class ImprovedMergeSort implements SortUtil.Sort { omGzyuPF  
'7}2}KD  
private static final int THRESHOLD = 10; MkHkM  
Rc3!u^?u  
/* EP"Z58&$R  
* (non-Javadoc) ?A3u2-  
* eEfGH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9XYm8g'X  
*/ .vctuy&  
public void sort(int[] data) { %6%mf>Guf  
int[] temp=new int[data.length]; zy%0;%  
mergeSort(data,temp,0,data.length-1); "O-X*>?f  
} AE+BrN +"2  
c~~4eia)  
private void mergeSort(int[] data, int[] temp, int l, int r) { :4-,Ru1C"  
int i, j, k; pdR\Ne0P*  
int mid = (l + r) / 2; P 4t@BwU$  
if (l == r) 5jso)`IL  
return; M)!"R [V  
if ((mid - l) >= THRESHOLD) /V{UTMSz  
mergeSort(data, temp, l, mid); (sQXfeMz  
else k7Qs#L  
insertSort(data, l, mid - l + 1); RD"-(T  
if ((r - mid) > THRESHOLD) I*^t!+q$  
mergeSort(data, temp, mid + 1, r); #;~HoOK*#  
else :hs~;vn)  
insertSort(data, mid + 1, r - mid); j5Da53c#^  
UimofFmI%  
for (i = l; i <= mid; i++) { n42\ty9  
temp = data; uV_%&P  
} \/<VJB uV  
for (j = 1; j <= r - mid; j++) { 8Th,C{  
temp[r - j + 1] = data[j + mid]; \QC{38}  
} +B1&bOb  
int a = temp[l]; * 30K}&T  
int b = temp[r]; h2T\%V_j  
for (i = l, j = r, k = l; k <= r; k++) { Li} 5aK  
if (a < b) { z`t~N  
data[k] = temp[i++]; +|d]\WlJ  
a = temp; 1s@QsZ3  
} else { _qf39fM;\  
data[k] = temp[j--]; \Z3K ~  
b = temp[j]; (m,H 5  
} X*@ tp,t  
} o ?vGI=  
} AK,'KO%{=  
r!dWI  
/** 3k9n*jY0  
* @param data Nz.X$zUmY  
* @param l C 5gdvJN  
* @param i F/BR#J1  
*/ |xcI~ X7Q  
private void insertSort(int[] data, int start, int len) { o zn&>k  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); aH{)|?  
} @9KW ]7  
} clV^Xg8D  
} eNK +)<PK(  
} |EX=Rj*  
wxo  
堆排序: }|=/v( D  
T9Q3I  
package org.rut.util.algorithm.support; B F<u3p??  
c#}K,joeU  
import org.rut.util.algorithm.SortUtil; /9G72AD!  
4)8VmCW  
/** {:uv}4Z  
* @author treeroot `T[@-   
* @since 2006-2-2 `9K5 ;]  
* @version 1.0 D1xGUz2r  
*/ 0,t%us/q  
public class HeapSort implements SortUtil.Sort{ l(sVnhL6h  
#mu L-V  
/* (non-Javadoc) "g ^i%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f<@!{y 2Xe  
*/ hvw9i7#  
public void sort(int[] data) { Uv *A a7M  
MaxHeap h=new MaxHeap(); TSP%5v;Dh  
h.init(data); +`Z1L\gmA  
for(int i=0;i h.remove(); (4R(5t  
System.arraycopy(h.queue,1,data,0,data.length); w7U]-MW6A*  
} ~Xxmj!nOf  
4Lt9Dx1  
private static class MaxHeap{ NVv <vu  
S"Cz. bv  
void init(int[] data){ ~U&NY7.@  
this.queue=new int[data.length+1]; DYr#?} 40  
for(int i=0;i queue[++size]=data; [v"Z2F<.=  
fixUp(size); vAUt~ X"  
} ;9T}h2^`B  
} %vJHr!x  
/IUu-/ D  
private int size=0; Zok{ndO@|f  
!'jq.RawP  
private int[] queue; Pqomi!1  
\#9LwC"8;  
public int get() { K.)!qkW-%S  
return queue[1]; +'?Qph6o,7  
} ^&eF916H  
k5S;G"i J  
public void remove() { lnZ{Ryo(  
SortUtil.swap(queue,1,size--); Lj1l ]OD  
fixDown(1); K|7"YNohfG  
} =:WZV8@%  
file://fixdown X1| +9  
private void fixDown(int k) { 7s|'NTp  
int j; dEoIVy_9R  
while ((j = k << 1) <= size) { 03 @a G  
if (j < size %26amp;%26amp; queue[j] j++; bBjr hi  
if (queue[k]>queue[j]) file://不用交换 +94)BxrY  
break; Pp8S\%z~h  
SortUtil.swap(queue,j,k); \]tBwa  
k = j; 3B&A)&pEO  
} ob.<j  
} k)p` x"To  
private void fixUp(int k) { \zO.#H  
while (k > 1) { /s\ m V  
int j = k >> 1; \H] |5fp*  
if (queue[j]>queue[k]) 2}vibDq p  
break; O*xx63%jR  
SortUtil.swap(queue,j,k); + Iyyk02V  
k = j; zKQ<Zr  
} |#TU"$;  
} #t+?eye~  
#I/P9)4  
} \`n(JV  
sf> E  
} #dauXUKH  
`0d 0T~  
SortUtil: S,&LH-ps   
6$`<Y?  
package org.rut.util.algorithm; O=0p}{3l  
:@L7RZ`_  
import org.rut.util.algorithm.support.BubbleSort; MP%#)O6  
import org.rut.util.algorithm.support.HeapSort; }a]`"_i;[  
import org.rut.util.algorithm.support.ImprovedMergeSort; I,?NYIG"(  
import org.rut.util.algorithm.support.ImprovedQuickSort; */aY $aWv  
import org.rut.util.algorithm.support.InsertSort; X|of87  
import org.rut.util.algorithm.support.MergeSort; &[ })FI  
import org.rut.util.algorithm.support.QuickSort; +:KZEFY?<  
import org.rut.util.algorithm.support.SelectionSort; QQJGqM3a2  
import org.rut.util.algorithm.support.ShellSort; S^QEctXU  
CmU@8-1  
/** #7uH>\r  
* @author treeroot VUP|j/qD  
* @since 2006-2-2 _J,**AZ~z  
* @version 1.0 BtJkvg(2]  
*/ P;5)Net1X  
public class SortUtil { @2Z|\ojJ  
public final static int INSERT = 1; MK#   
public final static int BUBBLE = 2; 3D|Lb]=  
public final static int SELECTION = 3; N.|F8b]v  
public final static int SHELL = 4; xQ9t1b|{e  
public final static int QUICK = 5; # qd!_oN  
public final static int IMPROVED_QUICK = 6; '(]Wtx%9"  
public final static int MERGE = 7; <J8c dB!e  
public final static int IMPROVED_MERGE = 8; i\xs!QU  
public final static int HEAP = 9; [v1$L p  
P]+B}))  
public static void sort(int[] data) { (B#FLoK  
sort(data, IMPROVED_QUICK); )<x9t@$  
} H I9/  
private static String[] name={ S'x ]c#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?q!4REM  
}; l$u52e!7  
<@J$hs9s  
private static Sort[] impl=new Sort[]{ MTYV~S4/  
new InsertSort(), 3W'fEh5  
new BubbleSort(), r\m{;Z#LJm  
new SelectionSort(), 7w73,r/D8A  
new ShellSort(), RE!WuLs0"  
new QuickSort(), +Xg:*b9So  
new ImprovedQuickSort(), =eA|gt  
new MergeSort(), ?y|&Mz'XJ(  
new ImprovedMergeSort(), ww|fqx?  
new HeapSort() nOC\ =<Nsg  
}; DY`0 `T  
+}jzge"  
public static String toString(int algorithm){ jdG'sITv  
return name[algorithm-1]; &>-'|(m+2  
} PTHxvml  
bWL!=  
public static void sort(int[] data, int algorithm) { xxGm T.&  
impl[algorithm-1].sort(data); \BBs;z[/  
} qiOtbH=  
:V(C+bm *  
public static interface Sort { ]MCH]/  
public void sort(int[] data); i, ^-9  
} /[c_,G" "  
j*>]HNo&  
public static void swap(int[] data, int i, int j) { x|Uwk=;X|s  
int temp = data; #~Xj=M%  
data = data[j]; &._"rhz  
data[j] = temp; G;gsDn1t  
} c RI2$|  
} Dp ['U  
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