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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。 A_%}kt (6  
插入排序: f41!+W=  
00G[ `a5  
package org.rut.util.algorithm.support; QLH s 3eM  
ii*Ty!Sa  
import org.rut.util.algorithm.SortUtil; i c]f o  
/** 5hpb=2  
* @author treeroot  j>s%q .  
* @since 2006-2-2 ,7M9f  
* @version 1.0 C_#0Y_O  
*/ F ,{nG[PL  
public class InsertSort implements SortUtil.Sort{ 3@}HdLmN|  
%'* |N [  
/* (non-Javadoc) YS{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vfegIoZ  
*/ 2+GF:[$  
public void sort(int[] data) { 3a{QkVeV7  
int temp; 5Kv=;o=U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wrn[q{dX  
} ?k_=?m  
} "eQ96^'J  
} !*|CIxk(  
y::;e#.  
} ~9oS~fP?I  
=QyO$:t  
冒泡排序: IFPywL{K  
~ilbW|s?=k  
package org.rut.util.algorithm.support; B>Nxc@=D  
`s:| 4;.  
import org.rut.util.algorithm.SortUtil; .(S,dG0P  
3Ua g[ms  
/** 6XQ)Q)  
* @author treeroot 66'TdF]"  
* @since 2006-2-2 }C#YR( ]  
* @version 1.0 6w}:w?=6  
*/ MO#%w  
public class BubbleSort implements SortUtil.Sort{ m2|0<P@k!  
!gf&l ^)  
/* (non-Javadoc) 'KQu z)-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Cy)#Z{  
*/ VY _(0  
public void sort(int[] data) { hkU# lt  
int temp; Y\p yl  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Lp ]d4"L;3  
if(data[j] SortUtil.swap(data,j,j-1); RV(}\JU  
} *=/XlSWF  
} 7FDraEr#f  
} T>uLqd{hH  
} )cqhbR  
)edM@beY_  
} }(tGjx]  
yJp& A  
选择排序: W: ?-d{  
WejY b;KS  
package org.rut.util.algorithm.support; ',!#?aGV  
mG@Q}Y(  
import org.rut.util.algorithm.SortUtil; bY>o%LL-  
i2j)%Gc}  
/** n)K6Z{x  
* @author treeroot AN~1E@"  
* @since 2006-2-2 `z=MI66Nl  
* @version 1.0 <![T~<.  
*/ +u=xBhZ  
public class SelectionSort implements SortUtil.Sort { ;C"J5RA  
p-7dJ  
/* ;%jt;Xv9  
* (non-Javadoc) /BIPLDN6  
* If&p$pAH?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kcYR:;y  
*/ M}5C;E*  
public void sort(int[] data) { THu a?,oyW  
int temp; 7k$8i9#  
for (int i = 0; i < data.length; i++) { }dXL= ul  
int lowIndex = i; z{n=G  
for (int j = data.length - 1; j > i; j--) { r\Nn WS J  
if (data[j] < data[lowIndex]) { J5o"JRJ"  
lowIndex = j; by06!-P0[  
} 0"QE,pLe4  
} 7CIje=u.q  
SortUtil.swap(data,i,lowIndex); Zwt!nh   
} 8% |x)  
} 'QV 4 =h`  
~0}eNz*  
} '  qM3.U  
q(r2\  
Shell排序: p5H Mg\hT  
*"4<&F S  
package org.rut.util.algorithm.support; Rxli;blzi  
X! ]~]%K$y  
import org.rut.util.algorithm.SortUtil; wk/->Rz  
ry< P LRN  
/** xxiLi46/  
* @author treeroot 7Ow7|  
* @since 2006-2-2 =0:hrg+Zgx  
* @version 1.0 S77Gc:[;8  
*/ E+2y-B)E  
public class ShellSort implements SortUtil.Sort{ Z~nl{P#  
?eO|s5r  
/* (non-Javadoc) 8r|LFuI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <^~F~]wnH  
*/ 08` @u4  
public void sort(int[] data) { @E)XT\;3  
for(int i=data.length/2;i>2;i/=2){ ^$L/Mv+  
for(int j=0;j insertSort(data,j,i); W[?B@sdSZ  
} )5t_tPv  
} ='JX_U`A^F  
insertSort(data,0,1); *= 71/&B  
} MJC Yi<D  
}"8_$VDcz  
/** 2 g8PU$T  
* @param data oD8-I^  
* @param j OiOL 4}5(  
* @param i %x *f{(8h  
*/ @3@%9E  
private void insertSort(int[] data, int start, int inc) { ;F+%{LgKl  
int temp; 'IP!)DS  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 5a`}DTB[Co  
} D[r  
} btY Pp0o~  
} < 9MnQ*@  
9C.cz\E  
} v\ox:C  
 X"0Q)  
快速排序: f/B--jq  
~4^e a  
package org.rut.util.algorithm.support; g3Q #B7A  
yS43>UK_W+  
import org.rut.util.algorithm.SortUtil; b?$09,{0  
.3&m:P8zV  
/** bDo'hDmW  
* @author treeroot 'KL(A-}!  
* @since 2006-2-2 \\qg2yI  
* @version 1.0 ?*@h]4+k'  
*/ dF,FH-  
public class QuickSort implements SortUtil.Sort{ 5^dw!^d  
C;5}/J^E  
/* (non-Javadoc) 1fy{@j(W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =FbfV*K 9  
*/ M($},xAvDU  
public void sort(int[] data) { > 95Cs`>d  
quickSort(data,0,data.length-1); (`NRF6'&1L  
} [jw o D  
private void quickSort(int[] data,int i,int j){ wl%1B64  
int pivotIndex=(i+j)/2; LJy'wl  
file://swap 54{"ni 2a  
SortUtil.swap(data,pivotIndex,j); JK(&E{80  
$VA4% 9  
int k=partition(data,i-1,j,data[j]); 6S<$7=$ =  
SortUtil.swap(data,k,j); ~c^-DAgB  
if((k-i)>1) quickSort(data,i,k-1); %awS*  
if((j-k)>1) quickSort(data,k+1,j); "v1(f|a  
B`F82_O  
} yjq )}y,tF  
/** D:(f"  
* @param data >DRs(~|V#  
* @param i vFOv IVp  
* @param j _D9=-^  
* @return Em,!=v(*  
*/ ?5Fj]Bk]  
private int partition(int[] data, int l, int r,int pivot) { 0Nu]N)H5<l  
do{ ,&=`T 7i  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x\rZoF.NQ  
SortUtil.swap(data,l,r); [f0HUbPX  
} }'W^Ki$  
while(l SortUtil.swap(data,l,r); |DW'RopM  
return l; ]SL&x:/-  
} 76b7-Nj"  
co3 ,8\N0  
} )9r%% #  
1Q5<6*QL"  
改进后的快速排序: DBUwf1=qj  
mz*z1`\7v\  
package org.rut.util.algorithm.support; X$9QW3.M  
~@8d[Tb  
import org.rut.util.algorithm.SortUtil; r!^\Q7  
F47n_JV!d  
/** p L@zZK0  
* @author treeroot _kHpM:;.  
* @since 2006-2-2 %SGO"*_  
* @version 1.0 M 9#QS`G  
*/ VK;x6*Y  
public class ImprovedQuickSort implements SortUtil.Sort { 0UJ`<Bfd  
[,^dM:E/  
private static int MAX_STACK_SIZE=4096; hD1AK+y  
private static int THRESHOLD=10; Wts{tb  
/* (non-Javadoc) GZEonCk[&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (J&Xo.<Z-  
*/ _,FoXf7  
public void sort(int[] data) { ~8(X@~Tn*  
int[] stack=new int[MAX_STACK_SIZE]; nY9qYFw  
Nr9[Vz?$P  
int top=-1; +{%(_ <  
int pivot; \bic.0-  
int pivotIndex,l,r; Wp}9%Mq~Jy  
\`&pk-uW  
stack[++top]=0; wW8 6rB  
stack[++top]=data.length-1; rfRo*u2"  
N[bN"'U/1  
while(top>0){ =h::VB}Lv  
int j=stack[top--]; &ZN'Ey?  
int i=stack[top--]; s;s-6%p  
|WU`p  
pivotIndex=(i+j)/2; ]B3FTqR{i  
pivot=data[pivotIndex]; _[i=TqVmf  
!rg0U<bO!  
SortUtil.swap(data,pivotIndex,j); @>2rz  
V6MT>T  
file://partition 82za4u$q#  
l=i-1; 3:joSQa  
r=j; sBtG}Mo)  
do{ =t$mbI   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SU O;  
SortUtil.swap(data,l,r); `u~  
} _qt;{,t  
while(l SortUtil.swap(data,l,r); ~f10ZB_k>'  
SortUtil.swap(data,l,j); R+K&<Rz  
s~Wu0%])Q  
if((l-i)>THRESHOLD){ ; axa ZV  
stack[++top]=i; IIQ3|eZ  
stack[++top]=l-1; v* ~%x  
} fslk7RlSKg  
if((j-l)>THRESHOLD){ NzAtdcwR  
stack[++top]=l+1; mK40 f  
stack[++top]=j; NB5L{Gf6-  
} OF<n T  
@MZ6E$I  
} x;FO|fH  
file://new InsertSort().sort(data); 62)lf2$1  
insertSort(data); QP5:M!O<)  
} xrVZxK:!  
/** S~rVRC"<xo  
* @param data 9U9c"'g  
*/ "gN*J)!x  
private void insertSort(int[] data) { R%N#G<^R  
int temp; V> a3V'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {<}I9D5  
} ,}IER  
} ]2\2/~l  
} 39T&c85  
ys[i`~$  
} |<3Q+EB^  
K;y\[2;}e,  
归并排序: b6!Q!:GO&  
J4Z<Yt/  
package org.rut.util.algorithm.support; y:|.m@ j1  
?Y0$X>nm  
import org.rut.util.algorithm.SortUtil; av; (b3Lq  
M,\|V3s  
/** )/WA)fWkT  
* @author treeroot _UBJPb@=U  
* @since 2006-2-2 $qlqW y-s  
* @version 1.0 p=-B~:  
*/ F*4Qa  
public class MergeSort implements SortUtil.Sort{ bpF@}#fT  
|T$a+lHMD  
/* (non-Javadoc) /[|}rqX(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GATP  
*/ )| Vg/S  
public void sort(int[] data) { dVVvG]  
int[] temp=new int[data.length]; Eo { 1y  
mergeSort(data,temp,0,data.length-1); XuFm4DEJ  
} c(Uj'uLc  
@%G'U&R{  
private void mergeSort(int[] data,int[] temp,int l,int r){ cB|Cy{%  
int mid=(l+r)/2; hDB`t $  
if(l==r) return ; y13CR2t6  
mergeSort(data,temp,l,mid); D)*_{   
mergeSort(data,temp,mid+1,r); F`;TU"pDf  
for(int i=l;i<=r;i++){ \9>g;qPg}  
temp=data; _yxe2[TD  
} f`u5\!}=!  
int i1=l; nXM9Px!  
int i2=mid+1; lNh=>D Pu  
for(int cur=l;cur<=r;cur++){ M=\d_O#;Z  
if(i1==mid+1) 3)C6OF>7  
data[cur]=temp[i2++]; nz&b5Xb2  
else if(i2>r) xyS2_Q  
data[cur]=temp[i1++]; 8V=HyF#  
else if(temp[i1] data[cur]=temp[i1++]; lrmt)BLoh  
else f>s#Ngvc  
data[cur]=temp[i2++]; KMpDlit  
} np`g cj#  
} ;Z!~A"~$>  
 u]1-h6  
} AF*ni~  
*C3uMiz  
改进后的归并排序: oz\{9Lwc  
1F3QI|  
package org.rut.util.algorithm.support; A{i][1N  
U9@t?j_#X{  
import org.rut.util.algorithm.SortUtil; Lem\UD$D`  
5S|}:~7T  
/** (b`4&sQ<  
* @author treeroot |i} +t  
* @since 2006-2-2 + +T "+p  
* @version 1.0 q#Yg0w~  
*/ H;TOPtt2  
public class ImprovedMergeSort implements SortUtil.Sort { 33{;[/4  
qXP1Q3  
private static final int THRESHOLD = 10; HC9vc,Fp  
M]6w^\4j9  
/* w L/p.@  
* (non-Javadoc) k Z+q  
* @H3s2|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =9DhO7I'  
*/ uS: A4tN  
public void sort(int[] data) { 1kvPiV=X>  
int[] temp=new int[data.length]; dt-Qu},8-  
mergeSort(data,temp,0,data.length-1); 0^<Skm27"  
} ~!3t8Hx6  
z&C{8aQ'  
private void mergeSort(int[] data, int[] temp, int l, int r) { <?> I\  
int i, j, k; 3D?IG\3  
int mid = (l + r) / 2; :Bx+WW&P.i  
if (l == r) dDv{9D,  
return; O:`GL1{ve?  
if ((mid - l) >= THRESHOLD) RQj`9F  
mergeSort(data, temp, l, mid); xVsa,EX b  
else LT,iS)dY+  
insertSort(data, l, mid - l + 1); *tTP8ZCQ[  
if ((r - mid) > THRESHOLD) `G"|MM>P  
mergeSort(data, temp, mid + 1, r); (B>yaM#5  
else p~Yy"Ec;p  
insertSort(data, mid + 1, r - mid); v{mv*`~nA\  
Hl^aUp.c  
for (i = l; i <= mid; i++) { P|unUW(P  
temp = data; "xe7Dl  
} 4cXAT9  
for (j = 1; j <= r - mid; j++) { b[J-ja.  
temp[r - j + 1] = data[j + mid]; }|Hw0zP.  
} 8Ehy9<  
int a = temp[l]; G?Qe"4 .  
int b = temp[r]; L?3VyBE  
for (i = l, j = r, k = l; k <= r; k++) { [ -9)T  
if (a < b) { V9+xL 1U#  
data[k] = temp[i++]; =Q/w%8G  
a = temp; W;3 R;  
} else { Qag|nLoT  
data[k] = temp[j--]; ;x!,g5q"q  
b = temp[j]; Z-4K?;g'k  
} X;s 3y{ku  
} t/v@vJ`vSH  
} ~=`f]IL  
=,&u_>Dp  
/** G]L0eV  
* @param data ) >>u|#@z  
* @param l ^#a#<8Jz  
* @param i VRtbHam  
*/ &%|xc{i  
private void insertSort(int[] data, int start, int len) { i;[h 9=\/  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); R7E]*:0}  
} f0-RhR  
} &q ," !:L]  
} >QYh}Z- /%  
} r\A@&5#q  
kbfuvJ>  
堆排序: [b7it2`dl  
B]'e$uyL7  
package org.rut.util.algorithm.support; Tjd&^m  
[=XZza.z  
import org.rut.util.algorithm.SortUtil; v;)BVv  
<ldid]o #  
/** c+szU}(f6(  
* @author treeroot EHH|4;P6  
* @since 2006-2-2 IT8B~I\OY  
* @version 1.0 QT`fix{  
*/ pu\b`3C(  
public class HeapSort implements SortUtil.Sort{ #D!$~ h&i  
20 jrv'f  
/* (non-Javadoc) S 3{Dn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C$KaT3I  
*/ N+*(Y5TU  
public void sort(int[] data) { G[|3^O>P  
MaxHeap h=new MaxHeap(); !d:tIu{)  
h.init(data); Sp<hai  
for(int i=0;i h.remove(); 1zdYBb6;j  
System.arraycopy(h.queue,1,data,0,data.length); \1=T sU&^  
} ,$HHaoo g  
,3G$`  
private static class MaxHeap{ Zr\2BOcc.l  
>=4sPF)  
void init(int[] data){ am]3 "V>  
this.queue=new int[data.length+1]; Hm.X}HO0L  
for(int i=0;i queue[++size]=data; R!sNg   
fixUp(size); n (OjjR m  
} y.jS{r".  
} QH& %mr.S  
qsI{ b<n  
private int size=0; |!$ Q<-]f  
Sv.KI{;v$  
private int[] queue; 2;&mkc K'  
G!AICcP^  
public int get() {  =Ov9Kf  
return queue[1]; 0v;ve  
} R|/Wz/$1A  
#uQrJh1o8  
public void remove() { l>A\ V)  
SortUtil.swap(queue,1,size--); 5k K= S  
fixDown(1); cYsR0#  
} @[n2dmj  
file://fixdown gBMta+<fE~  
private void fixDown(int k) { 7^c2e*S  
int j; kJ/+IGV^v  
while ((j = k << 1) <= size) { A$/KP\0Y2  
if (j < size %26amp;%26amp; queue[j] j++; ]a8eDy  
if (queue[k]>queue[j]) file://不用交换 6(:)otz  
break; *hV4[=  
SortUtil.swap(queue,j,k); 1oB$MQoc  
k = j; |p;4dL  
} fwRGT|":B  
} ozVpfs  
private void fixUp(int k) { *^n^nnCwp  
while (k > 1) { P~&O4['<  
int j = k >> 1; BeAk 21xb  
if (queue[j]>queue[k]) SO7(K5H,  
break; ggMUdlU  
SortUtil.swap(queue,j,k); &Y 'z?N  
k = j; ,&0Z]*  
} `$H7KIG  
} Xu6jHJ@x  
X z8$Xz,O  
} <|otZJ'2r  
! &y  
} JAN|aCzD  
,Ie<'>hd  
SortUtil: m{VL\ g)  
SF0Jb"kS  
package org.rut.util.algorithm; !5NGlqEF#  
S 9WawI  
import org.rut.util.algorithm.support.BubbleSort; v<j2L"bj  
import org.rut.util.algorithm.support.HeapSort; )#C_mB$-#  
import org.rut.util.algorithm.support.ImprovedMergeSort; S45'j(S=  
import org.rut.util.algorithm.support.ImprovedQuickSort; :#qUMiu$  
import org.rut.util.algorithm.support.InsertSort; r|M'TA~:  
import org.rut.util.algorithm.support.MergeSort; ohtT O]\  
import org.rut.util.algorithm.support.QuickSort; q{/*n]K  
import org.rut.util.algorithm.support.SelectionSort; gEE9/\>%-  
import org.rut.util.algorithm.support.ShellSort; ,dOMW+{  
v Xc!Zg~  
/** T{ok +$w2  
* @author treeroot av$  
* @since 2006-2-2 t`uc3ta"9  
* @version 1.0 wtq,`'B  
*/ V):`&@  
public class SortUtil { R3cg2H  
public final static int INSERT = 1; +9TV:T  
public final static int BUBBLE = 2; CDJ$hu  
public final static int SELECTION = 3; Il|GCj*N  
public final static int SHELL = 4; ^[0" vtb  
public final static int QUICK = 5; 8*vFdoE_oO  
public final static int IMPROVED_QUICK = 6; STw oYn  
public final static int MERGE = 7; bea|?lK  
public final static int IMPROVED_MERGE = 8; t~q?lT  
public final static int HEAP = 9; )TM!ms+K  
$%B5$+  
public static void sort(int[] data) { kw3 +>{\  
sort(data, IMPROVED_QUICK); aJa.U^1{  
} !f@XDW&R  
private static String[] name={ Trpgx  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )x)gHY8;  
}; % ^e@`0L  
3<+z46`?  
private static Sort[] impl=new Sort[]{ SGQD ro=l  
new InsertSort(), Jlz9E|*qV  
new BubbleSort(), ]/a g*F  
new SelectionSort(), ,?I(/jI  
new ShellSort(), uO"y`$C$_  
new QuickSort(), /Ad6+cY  
new ImprovedQuickSort(), v3~FR,Kl  
new MergeSort(), \PzN XQ$  
new ImprovedMergeSort(), ~C0 Pu.{o  
new HeapSort() L -YNz0A  
}; L(;.n>/  
E3bwyK!s  
public static String toString(int algorithm){ Q]^Yi1PbS  
return name[algorithm-1]; loLKm]yV  
} }Iip+URG  
 UPR/XQ  
public static void sort(int[] data, int algorithm) { /;7ID41  
impl[algorithm-1].sort(data); ]?M)NRk%S  
} .5 ]{M\aA  
4'` C1a  
public static interface Sort { X'jr|s^s  
public void sort(int[] data); }{A?PHV5  
} j"i#R1T  
\x(.d.l/  
public static void swap(int[] data, int i, int j) { UP?D@ogl<  
int temp = data; &lUNy L  
data = data[j]; RN vQ  
data[j] = temp; D@:"f?K>  
} t|<FA#  
} q#jEv-j.  
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