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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。 {_q2kk  
插入排序: rA1 gH6D  
e\yj>tQJg  
package org.rut.util.algorithm.support; Bs##3{ylu  
AP@xZ%;K  
import org.rut.util.algorithm.SortUtil; N.64aL|1  
/** 'h81\SKFK9  
* @author treeroot >hQR  
* @since 2006-2-2 ]6:5<NW  
* @version 1.0 >p<( CVX[  
*/ Ix(4<s  
public class InsertSort implements SortUtil.Sort{ Y\op9 Fw  
E_H1X'|qS4  
/* (non-Javadoc) qL'3MY.!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W2<X 5'  
*/ I?fE=2}9  
public void sort(int[] data) { :lE7v~!Z  
int temp; rW`F|F%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UoLO#C0i  
} #e|eWi>  
} iEU(1?m2-  
} Etl7V  
'@fk(~|  
} 26Yg?:kP  
>)N#n`  
冒泡排序: }2\"(_  
>|iy= Zn%'  
package org.rut.util.algorithm.support; <=zGaU,  
#zy%B  
import org.rut.util.algorithm.SortUtil; SHGO;  
Fx@ {]  
/** :EO}uP2  
* @author treeroot r! M2H {  
* @since 2006-2-2 |SxEJ  
* @version 1.0 7q\c\qL  
*/ NNfCJ|  
public class BubbleSort implements SortUtil.Sort{ nuCK7X  
\O0fo^+U,,  
/* (non-Javadoc) ~'U;).C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uZYeru"w  
*/ <]9MgfAe  
public void sort(int[] data) { lyi}q"Kn*;  
int temp; !e7vc[N  
for(int i=0;i for(int j=data.length-1;j>i;j--){ )a}5\V  
if(data[j] SortUtil.swap(data,j,j-1); )R|7> 97  
} a>kD G <.A  
} i]YQq!B  
} n-=\n6"P  
} $bo^UYZ6  
^s?wnEo;j  
} O[`Ob6Q{F  
>ciq4H43Q|  
选择排序: [qXpi'q[  
7d<v\=J}  
package org.rut.util.algorithm.support; z=fag'fzM  
-?]ltn9!  
import org.rut.util.algorithm.SortUtil; lvN{R{7 >  
W+eN%w5  
/** ;+jp,( 7  
* @author treeroot {jVFlKP>  
* @since 2006-2-2 \8$`:3,@  
* @version 1.0 C=]3NB>Jc  
*/ =;`YtOL  
public class SelectionSort implements SortUtil.Sort { w %zw+E  
6,7omYof  
/* Ya_6Zd4O  
* (non-Javadoc) roA1= G\Q  
* .( J /*H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3K{8sFDO  
*/ P$QjDu-  
public void sort(int[] data) { x3P@AC$\  
int temp; _kd |:,  
for (int i = 0; i < data.length; i++) { Z\L@5.*ydE  
int lowIndex = i; _qg6( X  
for (int j = data.length - 1; j > i; j--) { "5YdmBy  
if (data[j] < data[lowIndex]) { LBE".+  
lowIndex = j; k|_2aQ02  
} "4`%NA  
} <oO,CXF  
SortUtil.swap(data,i,lowIndex); G<z)Ydh_  
} @Dy.HQ~  
} ;FmSL#]I  
wY95|QS  
} d"78:+  
"tR.'F[n4P  
Shell排序: zb" hy"hKw  
Qx6/Qa S?  
package org.rut.util.algorithm.support; {eXYl[7n  
J v#^GNm  
import org.rut.util.algorithm.SortUtil; Lm?*p>\Q  
G4}q*&:k  
/** wgyO%  
* @author treeroot V4-=Ni]k  
* @since 2006-2-2 LnDj   
* @version 1.0 QdTe!f|  
*/ AH`15k_i  
public class ShellSort implements SortUtil.Sort{ 1+jYpYEQW  
d0B+syl&4l  
/* (non-Javadoc) E1C_d'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NM@An2  
*/ ) b10%n^  
public void sort(int[] data) { [*G2wP[$  
for(int i=data.length/2;i>2;i/=2){ Fjzk;o  
for(int j=0;j insertSort(data,j,i); @>]3xHE6#=  
} ~D5MAEazS  
} q(7D8xG;F  
insertSort(data,0,1); :/NN =3e  
} /;4MexgB%  
`$H   
/** M@kZ(Rkv  
* @param data qJA.+q.e$e  
* @param j CiuN26>  
* @param i a,~P_B|@  
*/ m'tk#C  
private void insertSort(int[] data, int start, int inc) { cnthtv+(~  
int temp; 9ojhI=:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); gcxk 'd  
} sQZ8<DpB  
} f>dkT'4  
} ,7P^]V1  
}^[@m#  
} zRu`[b3u<  
dLf8w>i`T  
快速排序: tTH%YtG  
2-0cB$W+  
package org.rut.util.algorithm.support; )^H9C"7T  
Aa>gN  
import org.rut.util.algorithm.SortUtil; \NU [DHrMP  
l;A_Aii(  
/** MuGg z>CV[  
* @author treeroot }qhK.e  
* @since 2006-2-2 5$U>M  
* @version 1.0 kW&Z%k  
*/ *]WXM.R8  
public class QuickSort implements SortUtil.Sort{ LFyceFbm  
od1omYsR  
/* (non-Javadoc) 1`lFF_stkP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~,2hP ~  
*/ ^4pKsO3ul  
public void sort(int[] data) { o2d~  
quickSort(data,0,data.length-1); L_"(A #H:  
} T''+zk  
private void quickSort(int[] data,int i,int j){ Ts .Z l{B  
int pivotIndex=(i+j)/2; j7#GqVS'  
file://swap Xp6*Y1Y  
SortUtil.swap(data,pivotIndex,j); c)MR+'d\WO  
k!=GNRRZE  
int k=partition(data,i-1,j,data[j]); r)(BT:2m  
SortUtil.swap(data,k,j); X'7S|J6s  
if((k-i)>1) quickSort(data,i,k-1); Pki4wDCTW  
if((j-k)>1) quickSort(data,k+1,j); b',bi.FH  
Ok~{@\  
} `?^w  
/** rJZs 5g`  
* @param data Tki/ d\!+  
* @param i ~88 Tz+  
* @param j %8CT -mQ  
* @return  \t# 9zn>  
*/ G.nftp(*}  
private int partition(int[] data, int l, int r,int pivot) { |.O!zRm  
do{ h5rP]dbhXU  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R.IUBw5;/  
SortUtil.swap(data,l,r); J xm9@,  
} BddECY,z  
while(l SortUtil.swap(data,l,r); NcBe|qxQ  
return l; ^FM9} t/U,  
} yI.H4Dl<  
A;-z#R#V5  
} q'F_ j"  
KV}U{s+U8  
改进后的快速排序: 19 wqDIE0  
5A$az03y$\  
package org.rut.util.algorithm.support; $;uWj|  
;[%}Xx  
import org.rut.util.algorithm.SortUtil; KHecc/,,S  
_~ZQ b  
/** xPMyG);  
* @author treeroot _:X|R#d  
* @since 2006-2-2 * \o$-6<  
* @version 1.0 N~; khS]  
*/ hLbT\J`I  
public class ImprovedQuickSort implements SortUtil.Sort { ;%7XU~<a  
j22#Bw  
private static int MAX_STACK_SIZE=4096; OZ!$%.?l  
private static int THRESHOLD=10; L\Fu']l  
/* (non-Javadoc) ;q,)NAr&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;5Vk01R  
*/ xcZ%,7  
public void sort(int[] data) { f'6qJk%J  
int[] stack=new int[MAX_STACK_SIZE]; Uk *;C  
iCnUnR{  
int top=-1; _d[2_b1  
int pivot; LlA`QLe  
int pivotIndex,l,r; rw8J:?0x  
40Qzo%eL  
stack[++top]=0; mE^tzyh  
stack[++top]=data.length-1; >!Ap/{2  
HM@}!6/s  
while(top>0){ qSoBj&6y  
int j=stack[top--]; VyoE5o  
int i=stack[top--]; >[XOMKgQ](  
g)9JO6]  
pivotIndex=(i+j)/2; Krr?`n  
pivot=data[pivotIndex]; $}^\=p}X  
N=Uc=I7C  
SortUtil.swap(data,pivotIndex,j); @ojg`!,  
h76NR  
file://partition \'??  
l=i-1; Jn<e"  
r=j; LPapD@Z  
do{ I#S~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !q-:rW? c  
SortUtil.swap(data,l,r); 762o~vY6$  
} -?aw^du  
while(l SortUtil.swap(data,l,r); "zedbJ0  
SortUtil.swap(data,l,j); k>:/D  
HTUYvU*-  
if((l-i)>THRESHOLD){ W7*_T]  
stack[++top]=i; ^3WIl ]  
stack[++top]=l-1; 53`9^|:  
} xMSNrOc  
if((j-l)>THRESHOLD){ lbKv  
stack[++top]=l+1; V5yxQb  
stack[++top]=j; vfJ3idvo*w  
} oDW<e'Jm  
I(^jOgYU  
} d4p{5F7]^  
file://new InsertSort().sort(data); ^A 11h6I  
insertSort(data); u+z .J4w  
} Ufaqhh  
/** 1o|0x\q  
* @param data ''(fH$pY  
*/ v?YdLR  
private void insertSort(int[] data) { e7XsyL'|p  
int temp; eg$5z Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {{.sEi*  
} Y( 1L>4  
} V#gF*]q  
} 6bbZ<E5At  
,5eH2W  
} ;&+[W(7Sy  
Sv~YFS :oy  
归并排序: @ate49W  
5W[3_P+  
package org.rut.util.algorithm.support; IqhICC1V-  
+}c|O+6g  
import org.rut.util.algorithm.SortUtil; CJMaltPp&  
t+=12{9;f  
/** QJM-`(  
* @author treeroot $[M} K  
* @since 2006-2-2 r/CEYEJ&X  
* @version 1.0 U`bC>sCp  
*/ _W@,@hOH  
public class MergeSort implements SortUtil.Sort{ )Lc<;=w'9  
85r)>aCMn  
/* (non-Javadoc) <qbZG}u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M^j<J0(O  
*/ F!OOrW]p0  
public void sort(int[] data) { h1^9tz{  
int[] temp=new int[data.length]; ,+ns {ppn  
mergeSort(data,temp,0,data.length-1); 6keP':bt  
} z:Xj_ `p  
N,j>;x3xT  
private void mergeSort(int[] data,int[] temp,int l,int r){ !lQ#sL`  
int mid=(l+r)/2; Z?~gQ $  
if(l==r) return ; `e'G.@  
mergeSort(data,temp,l,mid); ?%cn'=>ZI  
mergeSort(data,temp,mid+1,r); -yX.Jv  
for(int i=l;i<=r;i++){ CRZi;7`*1  
temp=data; I@3Q=14k%  
} 0Jm]f/iZ  
int i1=l; Tjnt(5g  
int i2=mid+1; hAV2F #  
for(int cur=l;cur<=r;cur++){ P$p@5hl  
if(i1==mid+1) tWpl`HH  
data[cur]=temp[i2++]; m >]>$=%  
else if(i2>r) eaV3) uP  
data[cur]=temp[i1++]; Dk)@>l:gI,  
else if(temp[i1] data[cur]=temp[i1++]; `fQM  
else `t{D7I7  
data[cur]=temp[i2++]; {E!$ xY8  
} _:wZmZU}  
} p>k]C:h  
lZ}izl  
} LQh^; ]^(  
wqJ*%  
改进后的归并排序: reJ"r<2  
g~~m' ^  
package org.rut.util.algorithm.support; N=>- Q)  
Q,zC_  
import org.rut.util.algorithm.SortUtil; +?qf`p.{  
y._'K+nl  
/** sW;7m[o  
* @author treeroot rs[?v*R74  
* @since 2006-2-2 @4;HC=~  
* @version 1.0 _FL<egK  
*/ Q/9a,85  
public class ImprovedMergeSort implements SortUtil.Sort { ^g9}f  
/VRUz++K  
private static final int THRESHOLD = 10; 3H1Pp*PH  
J1.qhy>  
/* *Y8XP8u/  
* (non-Javadoc) jMK3T  
* CXBzX:T?#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 48wDf_<f5=  
*/ YV*b~6{d  
public void sort(int[] data) { j._G7z/LJ  
int[] temp=new int[data.length]; ;5<P|:^  
mergeSort(data,temp,0,data.length-1); 0r1g$mKb  
} -Bj.hx*  
s>T`l  
private void mergeSort(int[] data, int[] temp, int l, int r) { 1+R:3(AC  
int i, j, k; Gu2_dT  
int mid = (l + r) / 2; Y;8 >=0ye  
if (l == r) V?=TVI*k  
return; aw1P5aPmX  
if ((mid - l) >= THRESHOLD) K6E}";;  
mergeSort(data, temp, l, mid); !]yQ1@)*'  
else rqF"QU=l  
insertSort(data, l, mid - l + 1); .\$Wy$ d  
if ((r - mid) > THRESHOLD) d&hD[v  
mergeSort(data, temp, mid + 1, r); ; vMn/  
else ]x2Jpk99a  
insertSort(data, mid + 1, r - mid); ~NxEc8Y  
l$M$o(  
for (i = l; i <= mid; i++) { Hfke  
temp = data; |Z d]= tue  
} moCK- :  
for (j = 1; j <= r - mid; j++) { m)r]F#@/  
temp[r - j + 1] = data[j + mid]; Z+0?yQ=%  
} QW2?n`Fa9-  
int a = temp[l]; 26M~<Ic  
int b = temp[r]; q&Q/?g>f  
for (i = l, j = r, k = l; k <= r; k++) { ^b=XV&{q  
if (a < b) { sD2 ^_w6j  
data[k] = temp[i++]; (s0 88O  
a = temp; [G\o+D?2  
} else { l1}R2lSEO  
data[k] = temp[j--]; N*f^Z#B]  
b = temp[j]; Rxx>{+f4M  
} L.kD,'G}>  
} yOc|*O=]U  
} Fqo&3+J4  
d]MGN^%o  
/** 90p3V\LO  
* @param data i(0hvV>'  
* @param l BH5w@  
* @param i H"O$&  
*/ '|&,E#`  
private void insertSort(int[] data, int start, int len) { 8hZwQ[hr  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); q8/ihA6:  
} ms7SoY bSu  
} <^Nk.E  
} R3?:\d{  
} )i0 $j)R  
U,HIB^= R  
堆排序: lj*8mS/;h  
X($6IL6m  
package org.rut.util.algorithm.support; $~=2{  
Y xJ`-6  
import org.rut.util.algorithm.SortUtil; FRgLlp8x  
{EL'd!v7e  
/** v~}5u 5 $O  
* @author treeroot YwXXXh  
* @since 2006-2-2 <PioQ>~  
* @version 1.0 Q3,=~}ZNK  
*/ 8[M* x3  
public class HeapSort implements SortUtil.Sort{ tn{8u7  
}'TTtV:Q  
/* (non-Javadoc) Jh?z=JY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n26>>N  
*/ 2A>C+Y[7\  
public void sort(int[] data) { y^G>{?Tha  
MaxHeap h=new MaxHeap(); o!utZmk$  
h.init(data); 6|^0_6_  
for(int i=0;i h.remove(); %9X{{_  
System.arraycopy(h.queue,1,data,0,data.length); s@s/ '^`  
} \6:>{0\  
2h<U  
private static class MaxHeap{ y@`~9$  
b_l3+'#ofM  
void init(int[] data){ ESIzGaM  
this.queue=new int[data.length+1]; U{}!y3[wK  
for(int i=0;i queue[++size]=data; Af9+HI O  
fixUp(size); "J !}3)n  
} yb?{LL-uy  
}  uB;_vC  
/[iG5~G  
private int size=0; 69/?7r  
(zC   
private int[] queue; t:=k)B  
H_Os4}  
public int get() { $/paEn"  
return queue[1]; _88QgThb  
} Y\p $SN  
FsY(02  
public void remove() { qg4fR' i  
SortUtil.swap(queue,1,size--); 72,"Cj  
fixDown(1); +T2HE\  
} Qci$YTwl>  
file://fixdown jTfi@5aPY  
private void fixDown(int k) { o%`npi1y  
int j; ik5|,#}m&  
while ((j = k << 1) <= size) { LwOJ |jA(,  
if (j < size %26amp;%26amp; queue[j] j++; > :Ze4}(  
if (queue[k]>queue[j]) file://不用交换 `hzrfum4  
break; ?PH/?QP  
SortUtil.swap(queue,j,k); VFSz-<L  
k = j; 5m7b\Mak  
} QrC/ssf}  
} k_?~<vTM  
private void fixUp(int k) { ~@Kf2dHes  
while (k > 1) {  so fu  
int j = k >> 1; kaQ2A  
if (queue[j]>queue[k]) 9tk" :ld  
break; .45^=2NGmQ  
SortUtil.swap(queue,j,k); +j[`,5oS  
k = j; :Q-oV8t{  
} d0 -~| `5  
} HH8;J66I&  
etyCrQ ?U  
} c@(1:,R  
hH`Jb7 7L  
} @o#+5P  
$"8d:N?I[  
SortUtil: kXwi{P3D$  
%LQ/q 3?_  
package org.rut.util.algorithm; n+;vjVS%  
P+Z\3re  
import org.rut.util.algorithm.support.BubbleSort; "- eZZEl(  
import org.rut.util.algorithm.support.HeapSort; w!`Umll2  
import org.rut.util.algorithm.support.ImprovedMergeSort; iYKU[UP?  
import org.rut.util.algorithm.support.ImprovedQuickSort; `*yAiv>  
import org.rut.util.algorithm.support.InsertSort; g1 9S  
import org.rut.util.algorithm.support.MergeSort; #3 bv3m  
import org.rut.util.algorithm.support.QuickSort; ArzDI{1  
import org.rut.util.algorithm.support.SelectionSort; @B`Md3$7  
import org.rut.util.algorithm.support.ShellSort; P^[/Qi}j  
 AmcC:5  
/** Q\9K2=4  
* @author treeroot \H4U8)l  
* @since 2006-2-2 ~HmxEk9  
* @version 1.0 O>V(cmqE`  
*/ -@M3Dwsi3  
public class SortUtil { 3.vgukkk5  
public final static int INSERT = 1; GaBTj_3  
public final static int BUBBLE = 2; VT=K"`EpQ  
public final static int SELECTION = 3; MEq"}zrh  
public final static int SHELL = 4; <m-.aK{9  
public final static int QUICK = 5; Y"!uU.=xJ  
public final static int IMPROVED_QUICK = 6; 7pet Hi  
public final static int MERGE = 7; 4o5i ."l  
public final static int IMPROVED_MERGE = 8; } ` T8A  
public final static int HEAP = 9; z[9UQU~x?  
I:$"E% >=  
public static void sort(int[] data) { *)>do L  
sort(data, IMPROVED_QUICK); o| D^`Z  
} <I2z&  
private static String[] name={ 2dbRE:v5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2 9#]Vr  
}; kNPDm6m  
r{[OJc!  
private static Sort[] impl=new Sort[]{ n &}s-`D  
new InsertSort(), s[AA7>]3  
new BubbleSort(), ^o d<JD4  
new SelectionSort(), K]fpGo  
new ShellSort(), SDBt @=Nl  
new QuickSort(), 8S  U%  
new ImprovedQuickSort(), KcXpH]>!9  
new MergeSort(), FifbxL  
new ImprovedMergeSort(), 5~r2sCDPk  
new HeapSort() >I<PO.c!  
}; [B9;?G  
'MQ%)hipA  
public static String toString(int algorithm){ GGnp Pp  
return name[algorithm-1]; (V?@?25  
} Do*n#=  
\##5O7/1  
public static void sort(int[] data, int algorithm) { >ttuum12w  
impl[algorithm-1].sort(data); Acu@[ I^  
} yn~P{}68  
j*zD0I]  
public static interface Sort { q;A;H)?g  
public void sort(int[] data); CMl~=[foW  
} wss?|XCI  
SUE ~rb  
public static void swap(int[] data, int i, int j) { Q_O*oT(0  
int temp = data; 4| Ui?.4=  
data = data[j]; 9DE)S)e8  
data[j] = temp; $1 @,Qor  
} T bf:eVIG  
} $j*Qo/x d  
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