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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。 EY^?@D_<  
插入排序: 9[R+m3V/`  
QB3er]y0%  
package org.rut.util.algorithm.support; dU-nE5  
k)9+;bKQQ  
import org.rut.util.algorithm.SortUtil; 3  $a;  
/** 1`GW>ZKv  
* @author treeroot DE+k'8\T  
* @since 2006-2-2 !P3y+;S  
* @version 1.0 sQ.t3a3m  
*/ 57KrDxE}  
public class InsertSort implements SortUtil.Sort{ yz"hU  
NMS+'GRW  
/* (non-Javadoc) YC(X= D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wxJoWbn  
*/ ,Xxp]*K2  
public void sort(int[] data) { .}Eckqkp  
int temp; 4~Y?*|G]m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NOmFQ)/ &  
} nNf*Q r%Z  
} *7w!~mn[m  
} Hk'R!X  
/U} )mdFm  
} "RTv[n!  
.FN 6/N\  
冒泡排序: i*r ag0Mw  
Z*Rg ik  
package org.rut.util.algorithm.support; N:;z~`  
w I;sZJc  
import org.rut.util.algorithm.SortUtil; 6F5g2hBz  
WIabQ_fX  
/** P *&Cght>0  
* @author treeroot my0iE:  
* @since 2006-2-2 9N<=,!;5~s  
* @version 1.0 4'TssRot@h  
*/ ^B1$|C D,  
public class BubbleSort implements SortUtil.Sort{ >pp#>{}  
NFF!g]QN  
/* (non-Javadoc) 7'#_uA QR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tSe[*V4{'  
*/ XRHngW_A  
public void sort(int[] data) { yb,X }"Et  
int temp; vR&b2G7o  
for(int i=0;i for(int j=data.length-1;j>i;j--){  !# zO%  
if(data[j] SortUtil.swap(data,j,j-1); `Tei  
} C80< L5\  
} b +Z/nfS  
} z;MPp#Y  
} D8{ ,}@  
$+PyW( r  
} ?L0|$#Iw  
X`J86G)  
选择排序: P| hwLM  
*s<cgPKJ @  
package org.rut.util.algorithm.support; G1\F7A  
FmhAUe  
import org.rut.util.algorithm.SortUtil; V(8,94vm  
j^WYM r,  
/** E]}_hZU  
* @author treeroot t1G__5wp  
* @since 2006-2-2 M| Nh(kvH  
* @version 1.0 nSRNd A  
*/ |o+*Iy)  
public class SelectionSort implements SortUtil.Sort { b 0qA  
2j#Dwa(lZQ  
/* U#&+n-npO  
* (non-Javadoc) Kr[oP3  
* OL%}C*Zq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4H NaE{O4  
*/ hiEYIx  
public void sort(int[] data) { mkhWbzD'S  
int temp; _8!x  
for (int i = 0; i < data.length; i++) { 0X4)=sJP  
int lowIndex = i; 3y,2RernK  
for (int j = data.length - 1; j > i; j--) { IMBjI#\  
if (data[j] < data[lowIndex]) { 7t1as.  
lowIndex = j; 5E*Qqe  
} "vg.{  
} jgS3#  
SortUtil.swap(data,i,lowIndex); V]GF53D  
} ^tjw }sE  
} ! ,{zDMA  
S^;;\0#NK  
} ~$C}?y^ a  
!Z 0U_*&  
Shell排序: b(CO7/e>  
$VB dd~f  
package org.rut.util.algorithm.support; dwQ1~  
)2#&l  
import org.rut.util.algorithm.SortUtil; "LJV}L  
SF9NS*mr  
/** 9X,iQ  
* @author treeroot 5423Ky<  
* @since 2006-2-2  wlsx|  
* @version 1.0 IC(:RtJ  
*/ H  XFY  
public class ShellSort implements SortUtil.Sort{ z&B9Yu4M7  
k14<E /  
/* (non-Javadoc) o"FR% %  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e!o\AB%d  
*/ '7/F]S0K  
public void sort(int[] data) { N {~P}Sw  
for(int i=data.length/2;i>2;i/=2){ em5~4;&'  
for(int j=0;j insertSort(data,j,i); e&*b{>1*  
} Bs`{qmbC  
} =mF"D:s*  
insertSort(data,0,1); >3pT).wH|M  
} y:^o ._  
/]_|uN)Q  
/** ?{jey_]M  
* @param data &3;"$P  
* @param j D~BL Txq  
* @param i g4W/T  
*/ FRajo~H  
private void insertSort(int[] data, int start, int inc) { )QRT/, ;c  
int temp; }mzd23^W>P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |Olz h63k:  
} `/'p1?Z"  
} _ E-\aS{  
} =.&8ghJ*M  
K *{RGE  
} I>JE\## ^n  
bJ 2>@|3*  
快速排序: Dr(2@ 0P  
MG~Z)+g=y  
package org.rut.util.algorithm.support; Rd5-ao4  
EI7n|X a1q  
import org.rut.util.algorithm.SortUtil; ;6D3>Lm  
9<&M~(dwT4  
/** JqZt1um  
* @author treeroot CLk,]kA'r  
* @since 2006-2-2 $5.52  
* @version 1.0 E?czolNl  
*/ Dr:M~r'6  
public class QuickSort implements SortUtil.Sort{ -CuuO=h  
8)=(eI$  
/* (non-Javadoc) </D.}ia  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }Hq3]LVE  
*/ E:dN)  
public void sort(int[] data) { ZI;*X~h  
quickSort(data,0,data.length-1); (,jsZ!sl  
} l@* $C&E  
private void quickSort(int[] data,int i,int j){ :" Otsb7  
int pivotIndex=(i+j)/2; F'OO{nF  
file://swap rks"y&&Nc  
SortUtil.swap(data,pivotIndex,j); ( H&HSs  
y<w_>O  
int k=partition(data,i-1,j,data[j]); uR{)%udu  
SortUtil.swap(data,k,j); :aomDK*  
if((k-i)>1) quickSort(data,i,k-1); TukhGgmF  
if((j-k)>1) quickSort(data,k+1,j);  J]XLWAM  
t!SxJ B e  
} WeaT42*Q{  
/** ygj%VG  
* @param data U~)5{  
* @param i @&`^#pok  
* @param j O ylUuYy~j  
* @return yj#FO'UY  
*/ {Ji&rk}NP  
private int partition(int[] data, int l, int r,int pivot) { )B"{B1(  
do{ d'ZB{'[8p  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /;d 5p  
SortUtil.swap(data,l,r); dO%f ;m>#  
}  nOd;Zw  
while(l SortUtil.swap(data,l,r); XHj%U  
return l; M!5=3>Z  
} X-fWdoN @-  
8s2y!pn7Q  
} U5wh( vi  
Zi+FIQ(  
改进后的快速排序: Gf3-%s xA  
1fMV$T==K  
package org.rut.util.algorithm.support; %J9u?-~  
H v/5)  
import org.rut.util.algorithm.SortUtil; fs;\_E[)  
"_\"S  
/** fdX|t "oz  
* @author treeroot ][tR=Y#&y5  
* @since 2006-2-2 hU-FSdR  
* @version 1.0 !reOYt|  
*/ Hzm_o>^KC  
public class ImprovedQuickSort implements SortUtil.Sort { Uq_lT,  
iKV|~7nwO  
private static int MAX_STACK_SIZE=4096; YVa,?&i=N  
private static int THRESHOLD=10; Zv!XNc!"$y  
/* (non-Javadoc) ;`LG WT-<F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h)ZqZ'k$  
*/ MGMJeq vr  
public void sort(int[] data) { L&)e}"  
int[] stack=new int[MAX_STACK_SIZE]; xWXLk )A  
C]8w[)d[`;  
int top=-1; 9xz@2b@  
int pivot; <uB)u>3   
int pivotIndex,l,r; i 0/QfB%O  
b way+lh  
stack[++top]=0; zJW2F_  
stack[++top]=data.length-1; f~\H|E8(  
MXfyj5K  
while(top>0){ @(35I  
int j=stack[top--]; r>ed/<_>m;  
int i=stack[top--]; 9v`sSTlSd  
$;G<!]& s  
pivotIndex=(i+j)/2; He'VqUw_  
pivot=data[pivotIndex]; Jh=.}FXnjL  
l$\B>u,>  
SortUtil.swap(data,pivotIndex,j); qhvT,"  
3{|~'5*  
file://partition }(!Uq  
l=i-1; HQ9tvSc  
r=j; 2"Wq=qy\J  
do{ q MrM^ ~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ul /m]b6-  
SortUtil.swap(data,l,r); C.:S@{sK  
} M^Z=~512g  
while(l SortUtil.swap(data,l,r); Qx,#Hj  
SortUtil.swap(data,l,j); G4 :\6fu  
Vf~-v$YI  
if((l-i)>THRESHOLD){ '}(>s%~  
stack[++top]=i; Miw=2F  
stack[++top]=l-1; rZpsC}C'  
} 0j4n1 1#  
if((j-l)>THRESHOLD){ dR.?Kv(,E  
stack[++top]=l+1; LKcp.i  
stack[++top]=j; =,;$d&#*h  
} 3Fn}nek  
hx&fV#m  
} 9q$^x/z!  
file://new InsertSort().sort(data); I*Dj@f`  
insertSort(data); As>Og  
} 8CRbo24"s  
/** h7fytO  
* @param data |3E|VGm~  
*/ //|B?4kk  
private void insertSort(int[] data) { *j]Bo,AC  
int temp; AQ(n?1LU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2IW!EUR  
} 0]*W0#{Zj  
} $t^Td<  
} Ewr2popK  
Q njK<}M9  
} T^#d;A  
1aS:bFi`  
归并排序: nlhv  
WgR%mm^  
package org.rut.util.algorithm.support; @OT$* Qh  
>Tl/3{V  
import org.rut.util.algorithm.SortUtil; @d~]3T  
:Ob^b3<t  
/** =>c0NT  
* @author treeroot zLe(#8G  
* @since 2006-2-2 Z7pX%nj_  
* @version 1.0 5EQ)pH+  
*/ CQ.C{  
public class MergeSort implements SortUtil.Sort{ e8dZR3JL  
?'a>?al%>  
/* (non-Javadoc) v\8v'EDP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^.)0O3oC  
*/ tlD^"eq4:  
public void sort(int[] data) { 5<`83; R9  
int[] temp=new int[data.length]; qzvht4  
mergeSort(data,temp,0,data.length-1); h>*3i#  
} oKGF'y?A>  
K]B`&ih  
private void mergeSort(int[] data,int[] temp,int l,int r){ |pBFmm*  
int mid=(l+r)/2; :TP4f ?FA  
if(l==r) return ; R'tvF$3=i  
mergeSort(data,temp,l,mid); A9@coP5  
mergeSort(data,temp,mid+1,r); m?yztm~u  
for(int i=l;i<=r;i++){ --"5yGOL  
temp=data; [^}bc-9?i  
} zfI{cMn'J  
int i1=l; YI*H]V%w  
int i2=mid+1;  G$'UK  
for(int cur=l;cur<=r;cur++){ ~a2|W|?  
if(i1==mid+1) %hBwc#^  
data[cur]=temp[i2++]; q({-C  
else if(i2>r)  q9{ h@y  
data[cur]=temp[i1++]; ltk ARc3  
else if(temp[i1] data[cur]=temp[i1++]; :d35?[  
else #W/Ch"Kv  
data[cur]=temp[i2++]; <m~8pM  
} <5j%!6zo  
} X,G"#j^  
^4 ,LIIUj  
} n+&8Uk  
P(I%9  
改进后的归并排序: Ws2?sn#x  
vs+aUT C\  
package org.rut.util.algorithm.support; lY@2$q9BT  
`5oXf  
import org.rut.util.algorithm.SortUtil; 2i #Ekon  
4zhh **]B  
/** 2f%+1uU  
* @author treeroot O>vCi&  
* @since 2006-2-2 %wru)  
* @version 1.0 G?LC!9MB  
*/ NpM;vO  
public class ImprovedMergeSort implements SortUtil.Sort { <w*WL_P  
ct=K.m@E%X  
private static final int THRESHOLD = 10; -&1P2m/46  
ws QuJrG  
/* x|d?'  
* (non-Javadoc) (U$;0`  
* /%7&De6Xg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7D>_<)%d=  
*/ s{7bu|0  
public void sort(int[] data) { P"}"q ![  
int[] temp=new int[data.length]; V>obMr^5  
mergeSort(data,temp,0,data.length-1); F?FfRzZ[  
} EQpF:@_  
IIGx+>  
private void mergeSort(int[] data, int[] temp, int l, int r) {  LDU4 D  
int i, j, k; 3rHn?  
int mid = (l + r) / 2; ' e!WZvr  
if (l == r) M6A0D+08  
return; BUsxgs"),  
if ((mid - l) >= THRESHOLD) iyR"O1]  
mergeSort(data, temp, l, mid); 9dAtQwGR"6  
else `S-%}eUv  
insertSort(data, l, mid - l + 1); +!ljq~%  
if ((r - mid) > THRESHOLD) n,s 7!z/  
mergeSort(data, temp, mid + 1, r); 4,R"(ej  
else *CQZ6&^  
insertSort(data, mid + 1, r - mid); "WtYqXyd  
^jRX6  
for (i = l; i <= mid; i++) { ` s+kYWg'Z  
temp = data; \5j}6Wj  
} Z;1r=p#s  
for (j = 1; j <= r - mid; j++) { H0])>1sWB  
temp[r - j + 1] = data[j + mid]; `bV&n!Y_  
} EBL-+%J8  
int a = temp[l]; ,UVu.RjXN  
int b = temp[r]; K8 [Um!(  
for (i = l, j = r, k = l; k <= r; k++) { ='+I dn#5  
if (a < b) { !"RRw&0M  
data[k] = temp[i++]; -(lP8Y~gFY  
a = temp; kmu`sk"  
} else { 0!0o[3*  
data[k] = temp[j--]; 2v@B7r4}  
b = temp[j]; ] `q]n  
} =w`uZ;l$Q  
} w 2U302TZ  
} n`w]?bL  
Pe\Obd8d  
/** \k"CtzoX  
* @param data A*/8j\{n  
* @param l LxWd_B  
* @param i c1a$J`  
*/ !J@!2S 9  
private void insertSort(int[] data, int start, int len) { 5#X R1#`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |dqESl,2  
} biw . ~  
} *[b>]GXd49  
} 88S:E7 $  
} Y}2Sr-@u  
gE^pOn  
堆排序: 3 4%B0  
^LB]  
package org.rut.util.algorithm.support; z'1%%.r;FM  
8L_OH  
import org.rut.util.algorithm.SortUtil; S|@/"?DC  
N`?/kubD  
/** 0T(+z)Ki  
* @author treeroot id8QagJ  
* @since 2006-2-2 =)g}$r &<  
* @version 1.0 /|}yf/^9X  
*/ 4]p#9`j  
public class HeapSort implements SortUtil.Sort{ .GNyA DQp  
$-t@=N@vO?  
/* (non-Javadoc) /hVwrt(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ae@!M  
*/ 2T(+VeMQ=  
public void sort(int[] data) { +Q);t,  
MaxHeap h=new MaxHeap(); ns\I Y<Yo  
h.init(data); M?}:N_9<J  
for(int i=0;i h.remove(); Oi^cs=}  
System.arraycopy(h.queue,1,data,0,data.length); ibwV #6  
} 1HAnOy0   
=v<A&4  
private static class MaxHeap{ 0QfDgDX  
-Hw3rv3o  
void init(int[] data){ + %K~  
this.queue=new int[data.length+1]; vV 9vB3K5?  
for(int i=0;i queue[++size]=data; EH M59s|B  
fixUp(size); }#4Ek8nFR  
} cjg~?R  
} _Ds,91<muQ  
&)||~  
private int size=0; Ac|dmu  
%t!S 7UD  
private int[] queue; .o C! ~'  
YtWw)IK  
public int get() { T KAs@X,t  
return queue[1]; ^^B_z|;Aa  
} Y[R>?w  
OyK#Rm2A=  
public void remove() { `\;Z&jlpT  
SortUtil.swap(queue,1,size--); -+Yark  
fixDown(1); {~Jk(c~I  
} 8{i}^.p  
file://fixdown ?r8hl.Z>  
private void fixDown(int k) { $Q'z9ghEg  
int j; v_/<f&r  
while ((j = k << 1) <= size) { k_1@?&3  
if (j < size %26amp;%26amp; queue[j] j++; `]6<j<' ,  
if (queue[k]>queue[j]) file://不用交换 VX8CEO  
break; pO:]3qv  
SortUtil.swap(queue,j,k); C8Mx>6  
k = j; F?H=2mzKbz  
} &zEBfr  
} 6\K\d_x  
private void fixUp(int k) { :@-yK8q's  
while (k > 1) { CqZHs 9+e&  
int j = k >> 1;  ^QJJ2jZ  
if (queue[j]>queue[k]) [v*q%Mi_  
break; !|u?z%  
SortUtil.swap(queue,j,k); |?g-8":H8P  
k = j; ;A7JX:*?y=  
} xypgG;`\  
} NqOX);'L0  
(6a<{  
} ?f q!BV  
u|AMqS  
} Zxqlhq/)  
Dr%wab"yy  
SortUtil: %3#C0%{x  
"Z,T%]  
package org.rut.util.algorithm; l,l6j";ohd  
zSfUM.fM  
import org.rut.util.algorithm.support.BubbleSort; `W~    
import org.rut.util.algorithm.support.HeapSort; R0tT4V+  
import org.rut.util.algorithm.support.ImprovedMergeSort; ~ |A0*  
import org.rut.util.algorithm.support.ImprovedQuickSort; Xz)F-C27h  
import org.rut.util.algorithm.support.InsertSort; #Mk: 4  
import org.rut.util.algorithm.support.MergeSort; 2=8PA/  
import org.rut.util.algorithm.support.QuickSort; Q25VG5 G  
import org.rut.util.algorithm.support.SelectionSort; u)o-H!a  
import org.rut.util.algorithm.support.ShellSort; C f d* Q  
~AX~z)  
/** _FE uQ9E  
* @author treeroot NjEi.]L*fX  
* @since 2006-2-2 xYYa%PhIC  
* @version 1.0 ?0* [ L  
*/ "P(obk  
public class SortUtil { $rr@3H+  
public final static int INSERT = 1; m26YAcip}  
public final static int BUBBLE = 2; +>!nqp  
public final static int SELECTION = 3; \$Wpt#V  
public final static int SHELL = 4; '=Lpch2J  
public final static int QUICK = 5; *kqC^2t  
public final static int IMPROVED_QUICK = 6; (Y7zaAG]  
public final static int MERGE = 7; sw$uZ$$~#  
public final static int IMPROVED_MERGE = 8; L{8_6s(:  
public final static int HEAP = 9; LOfw #+]d  
jTt9;?)  
public static void sort(int[] data) { -6NoEmb)\'  
sort(data, IMPROVED_QUICK); a%b E}  
} >|kD(}Axf  
private static String[] name={ Q]N&^ E  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =|IlORf<  
}; [{u3g4`}  
v7./u4S|V  
private static Sort[] impl=new Sort[]{ {b4`\ I@<  
new InsertSort(), wDW%v@  
new BubbleSort(), *w*>\ZhOm  
new SelectionSort(), -XCs?@8EQ  
new ShellSort(), >Q=^X3to  
new QuickSort(), '&#gs P9  
new ImprovedQuickSort(), SKnYeT  
new MergeSort(), JRFUNy1+e1  
new ImprovedMergeSort(), ws!~MSIy  
new HeapSort() G(#t,}S}@  
}; C7NSmZ  
z_ycH%p  
public static String toString(int algorithm){ 0: hv6Ge^  
return name[algorithm-1]; 0]c&K  
} ll X `  
?%Nh4+3N>  
public static void sort(int[] data, int algorithm) { [t fB*m5  
impl[algorithm-1].sort(data); Q9O_>mZy  
} lm;hW&O9  
a0sz$u  
public static interface Sort { !aF~5P7%  
public void sort(int[] data); V27RK-.N!  
} S}%z0g<  
Wmcd{MOS  
public static void swap(int[] data, int i, int j) { EC,`t*<  
int temp = data; MU a[}?  
data = data[j]; b1 w@toc  
data[j] = temp; 1s=Q~*f~d  
} G)}[!'<rR  
} jD9u(qAlH  
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