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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。 ,RkL|'1l  
插入排序: sP0pw]!  
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package org.rut.util.algorithm.support; x 5u.D^  
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import org.rut.util.algorithm.SortUtil; J,s)Fu\j@  
/** =5P_xQx  
* @author treeroot 9`8\<a'rU  
* @since 2006-2-2 +[ _)i9a  
* @version 1.0 8F$b/Z  
*/ q\qV~G`  
public class InsertSort implements SortUtil.Sort{ #\+ TKK  
*&j)"hX  
/* (non-Javadoc) kRs24 =  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7]_lSYwrb  
*/ LhZWK^!{S  
public void sort(int[] data) { /H)K_H#|;  
int temp; o W)M&$oS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D_6GzgZ  
} :x*8*@kC  
} Co2* -[R  
} lN,8(n?g  
E"Z9 NDgl#  
} 8gap _qTo  
%6`{KT?  
冒泡排序: r9Ux=W\  
k'N `5M)  
package org.rut.util.algorithm.support; U! F~><  
b$sw`Rsw  
import org.rut.util.algorithm.SortUtil; )x.}B4z  
k_9tz}Z  
/** p[(VhbN  
* @author treeroot (~oUd 4  
* @since 2006-2-2 ]fXMp*LvY  
* @version 1.0 '676\2.  
*/ %Fc, $ =  
public class BubbleSort implements SortUtil.Sort{ 8Ek<J+& |I  
#e.2m5T  
/* (non-Javadoc) 6 ^X$;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Ef:mr"Nu  
*/ oZ1#.o{  
public void sort(int[] data) { ;lST@>  
int temp; z_#B 4  
for(int i=0;i for(int j=data.length-1;j>i;j--){ uQN8/Gy*J  
if(data[j] SortUtil.swap(data,j,j-1); }>JFO:v&  
} @GGzah#  
} ZdEeY|j  
} u93=>S  
} TB] %?L:  
d\`A ^  
} 0lNVQxG  
7z \I\8  
选择排序: B$k<F8!%  
,ZcW+!  
package org.rut.util.algorithm.support; MN2#  
UXvk5t1  
import org.rut.util.algorithm.SortUtil; v]g/ 5qI&  
B]< 6\Z?=  
/** b .k J&c  
* @author treeroot Q>nq~#3?  
* @since 2006-2-2 >Dpz0v  
* @version 1.0 )2}{fFa%  
*/ TH2D;uv  
public class SelectionSort implements SortUtil.Sort { cgsM]2ZYs  
@.fuR#  
/* P}o:WI4.cB  
* (non-Javadoc) #Nxk3He]8  
* `rC9i5:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e#K =SV!H  
*/ |,bsMJh0  
public void sort(int[] data) { ]]$s"F<  
int temp; *L8Pj`zR  
for (int i = 0; i < data.length; i++) { Q44Pg$jp  
int lowIndex = i; ks7g*; 3{@  
for (int j = data.length - 1; j > i; j--) { 38! $9)  
if (data[j] < data[lowIndex]) { k,M%/AXd  
lowIndex = j; 693J?Yah[  
} I#Ay)+D  
} B:5( sK  
SortUtil.swap(data,i,lowIndex); w!)B\l^+c  
} 6\)61o_1|  
} S#qd#Zk|Y  
c&2ZjM  
} / Dj6Bj }  
/hf}f=7kH  
Shell排序: ,v:m  
,FX;-nP%  
package org.rut.util.algorithm.support; DF'-dh</*  
$b\`N2J-_  
import org.rut.util.algorithm.SortUtil; bL (g$Yi  
sTdD=>  
/** jcQ{,9 H`l  
* @author treeroot l2>G +t(,  
* @since 2006-2-2 ^8aj\xe(  
* @version 1.0 u&`7 C  
*/ =)m2u2c M  
public class ShellSort implements SortUtil.Sort{ _*6nTSL  
6 k+FTDL  
/* (non-Javadoc) Z}.N4 /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,"  
*/ jdQ`Y+BC  
public void sort(int[] data) { -,Cx|Nl  
for(int i=data.length/2;i>2;i/=2){ 9_[TYzpB!  
for(int j=0;j insertSort(data,j,i); * 7.!"rb8A  
} #gi0FXL  
} -W wFUm  
insertSort(data,0,1); < i*v  
} O5{!CT$  
p*F&G=ZE  
/** n>jb<uz  
* @param data Oi&.pY:X-  
* @param j /K2VSj3\  
* @param i *}Zd QJL  
*/ cBM A.'uIL  
private void insertSort(int[] data, int start, int inc) { ),0_ C\  
int temp; 8I04Nx  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); BFt?%E/]  
} Ojq>4=Z\  
} G!k&'{2  
} `C`CU?D  
oEU %"  
} 0G1?  
:U)q(.53  
快速排序: \%=\_"^?  
ln)_Jf1r  
package org.rut.util.algorithm.support; 8s pGDg\g  
r]Bwp i%  
import org.rut.util.algorithm.SortUtil; _ 0%sYkUc  
5j1}?0v_  
/** ii0AhQ  
* @author treeroot q$e2x=?  
* @since 2006-2-2 EcrM`E#kaZ  
* @version 1.0 V"(S<o  
*/ 7kO5hlKeo  
public class QuickSort implements SortUtil.Sort{ -}1S6dzr  
g e:UliHJ  
/* (non-Javadoc) S*Scf~Qp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T[B@7$Dp*  
*/ 4%~$A`7  
public void sort(int[] data) { w|gtb~oh  
quickSort(data,0,data.length-1); AJ[g~ s't  
} |/C>xunzz  
private void quickSort(int[] data,int i,int j){ T{d7,.:  
int pivotIndex=(i+j)/2; lZZ4 O(  
file://swap Sx+.<]t2A  
SortUtil.swap(data,pivotIndex,j); TAl py$  
&K2[>5 mG  
int k=partition(data,i-1,j,data[j]); } WY7!Y  
SortUtil.swap(data,k,j); PcC9)x  
if((k-i)>1) quickSort(data,i,k-1); p>h B&h  
if((j-k)>1) quickSort(data,k+1,j); 2<)63[YO  
Fh9`8  
} ~Y@(  
/** z6S N  
* @param data u& ?J+  
* @param i a h>k=t8(  
* @param j QgO@oV*S  
* @return {^>m3  
*/ JYOyz+wNd  
private int partition(int[] data, int l, int r,int pivot) { )Xg,;^  
do{ H>_ FCV8  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]=of=T:  
SortUtil.swap(data,l,r); dbSIC[q  
} 2+ F34  
while(l SortUtil.swap(data,l,r); _C~e(/=z  
return l; !/ TeTmo  
} K/79Tb-  
(h7 rW3  
} HiCNs;t  
o{pQDI {R  
改进后的快速排序: _ $PZID  
=_I2ek  
package org.rut.util.algorithm.support; wQWokpP;T7  
BRYhL|d~.  
import org.rut.util.algorithm.SortUtil; 5_ -YF~  
5 :6^533]  
/** -q|K\>tgU  
* @author treeroot Fx 2 KRxk  
* @since 2006-2-2 CdlE"Ye  
* @version 1.0 "{105&c\  
*/ ~Tq `c  
public class ImprovedQuickSort implements SortUtil.Sort { FFb`4.  
]WR+>)ERb  
private static int MAX_STACK_SIZE=4096; /cF 6{0XS9  
private static int THRESHOLD=10; {ER! 0w/  
/* (non-Javadoc) S Y>i@s+ML  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4]A2Jl E  
*/ ^qs=fF  
public void sort(int[] data) { )a.Y$![  
int[] stack=new int[MAX_STACK_SIZE]; m619bzFlB  
jhrmQS  
int top=-1; 4YM!SE-I  
int pivot;  XWV)   
int pivotIndex,l,r; 5p}Y6Lc\j  
v~e@:7d i  
stack[++top]=0; j*n Z   
stack[++top]=data.length-1; 8PB(<|}u  
)9MmL-7K  
while(top>0){ vpcx 1t<  
int j=stack[top--]; rM#jxAb  
int i=stack[top--]; K@Q_q/(%;  
H_m(7@=  
pivotIndex=(i+j)/2; ]c]rIOTN  
pivot=data[pivotIndex]; asb-syqU  
*,5V;7OR  
SortUtil.swap(data,pivotIndex,j); <uDEDb1|l  
w'z ?1M(*  
file://partition #y%bx<A  
l=i-1; Q( .d!CQ>  
r=j; J * $u  
do{ >Lp^QP1gU  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2ikY.Xi6  
SortUtil.swap(data,l,r); 0{#,'sc;  
} kmPK |R  
while(l SortUtil.swap(data,l,r); {j@ S<PD  
SortUtil.swap(data,l,j); _" W<>  
e^Q$Tog<  
if((l-i)>THRESHOLD){ |>@Gbgw^M  
stack[++top]=i; =)vmX0vL  
stack[++top]=l-1; /fbI4&SB!  
} $ r)+7i  
if((j-l)>THRESHOLD){ azR<Y_tw  
stack[++top]=l+1; u[9i>7}9  
stack[++top]=j; MEMD8:['  
} Y~EKMowI&e  
RB.&,1  
} l4?o0;:)  
file://new InsertSort().sort(data); @-nCK Yj  
insertSort(data);  98eiYh  
} 8 P85qa@w  
/** 4zs1BiMG  
* @param data x*& OvI/o  
*/ H$TYp  
private void insertSort(int[] data) { 0KO_bF#EB=  
int temp; *c4uCI:0t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lMz5))Rr  
} La9v97H:  
} 8aZuI|z  
} *t J+!1  
__r]@hY   
} a)=WDRk  
T`KH7y|bv  
归并排序: YYU Di@K  
rStfluPL  
package org.rut.util.algorithm.support; l[lUmE  
yPrp:%PS  
import org.rut.util.algorithm.SortUtil; O9*cV3}H  
ss63/   
/** ]Aap4+s  
* @author treeroot E;$)Oz  
* @since 2006-2-2 >y)(M(o  
* @version 1.0 7_C;-  
*/ qYv/" 1  
public class MergeSort implements SortUtil.Sort{ *5Upb,* *  
T.O^40y  
/* (non-Javadoc) ',j'Hf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |P7c {  
*/ 48dIh\TH"  
public void sort(int[] data) { !c-Ie~GIT  
int[] temp=new int[data.length]; D|m6gP;P  
mergeSort(data,temp,0,data.length-1); HPl!r0 h  
} WqP>cl2Lm  
Y)^qF)v,d  
private void mergeSort(int[] data,int[] temp,int l,int r){ IB:eyq-+  
int mid=(l+r)/2; XzI c<81Z  
if(l==r) return ; 5Nc~cD%0tK  
mergeSort(data,temp,l,mid); M,@\*qlEJ  
mergeSort(data,temp,mid+1,r); {;0j9rr  
for(int i=l;i<=r;i++){ +g,:!5pg  
temp=data; Gc2sY 0  
} S!Ue+jW  
int i1=l; {|?OKCG{  
int i2=mid+1; vWY}+#  
for(int cur=l;cur<=r;cur++){ BE. v+'c"  
if(i1==mid+1) Jcf'Zw"\  
data[cur]=temp[i2++]; vRa|lGeW  
else if(i2>r) p6m]( Jg  
data[cur]=temp[i1++]; C{>@b:]p  
else if(temp[i1] data[cur]=temp[i1++]; It'hmwu#  
else #~?Q?"  
data[cur]=temp[i2++]; ]jiM  
} jqxeON  
} nM:e<`r  
Kn3qq  
} {N1Ss|6  
wuE]ju<  
改进后的归并排序: fy04/_,q  
D>M a3g  
package org.rut.util.algorithm.support; e^kccz2f  
4DI.R K9  
import org.rut.util.algorithm.SortUtil; ' 7G'R  
<,p|3p3  
/** *O-1zIlp  
* @author treeroot Awl4*J~  
* @since 2006-2-2 *KNj5>6=  
* @version 1.0 o`S|  
*/ UwOZBF<  
public class ImprovedMergeSort implements SortUtil.Sort { )&:4//}a  
=H6"\`W  
private static final int THRESHOLD = 10; vaL+@Kq~&  
%7=B?c |  
/* ,73 kh  
* (non-Javadoc) *(6vO{  
* wY|&qX,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W^; wr#  
*/ m[ *)sm  
public void sort(int[] data) {  jL8[;*^G  
int[] temp=new int[data.length]; nIdB,  
mergeSort(data,temp,0,data.length-1); ixF '-  
} +c4]}9f!  
#<d f!)  
private void mergeSort(int[] data, int[] temp, int l, int r) { K6<@DP+/  
int i, j, k; E!<w t  
int mid = (l + r) / 2; ^FNvVbK|`  
if (l == r) 5&a4c"fU  
return; M{I8b<hY  
if ((mid - l) >= THRESHOLD) ipU,.@~#  
mergeSort(data, temp, l, mid); SA_5..  
else =au7'i|6  
insertSort(data, l, mid - l + 1); QX}O{LQR  
if ((r - mid) > THRESHOLD) v0euvs  
mergeSort(data, temp, mid + 1, r); x'Pp!  
else eh_ {-  
insertSort(data, mid + 1, r - mid); $YuVM  
c{4C4'GD  
for (i = l; i <= mid; i++) { D?;8bI%"  
temp = data; 2)}ic2]pn  
} g]au|$L4  
for (j = 1; j <= r - mid; j++) { P 1`X<A  
temp[r - j + 1] = data[j + mid]; z5G<h  
} <)n8lIK  
int a = temp[l]; # \9sCnb  
int b = temp[r]; #T<<{ RA  
for (i = l, j = r, k = l; k <= r; k++) { S1oRMd)r  
if (a < b) { vi?{H*H4c  
data[k] = temp[i++]; ~lO^ C  
a = temp; Z)E[Bv=  
} else { 6 ,jp-`  
data[k] = temp[j--]; u,AZMjlF  
b = temp[j]; oE:9}]N_  
} bOR1V\Jr$q  
} N&g9z{m7  
} VZ"W_U,  
} :U'aa  
/** eytd@-7uX  
* @param data Lc,`  
* @param l f9v%k'T[  
* @param i ={& }8VA  
*/ Zz!0|-\  
private void insertSort(int[] data, int start, int len) { *m2{6N_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9pAklD4  
} r #H(kJu,  
} V,t&jgG*  
} j8/rd  
} I*c B Ha  
s5{N+O)~S  
堆排序: Fw ,'a  
2<&lrsh  
package org.rut.util.algorithm.support; c%p7?3Ry  
S[p.`<{J  
import org.rut.util.algorithm.SortUtil; 7_t\wmvYp  
+$Q.N{LV  
/** ,<iJ#$: Sx  
* @author treeroot y\-f{I  
* @since 2006-2-2 Hkq""'Mx+w  
* @version 1.0 ap|7./yg  
*/ Qw>ftle  
public class HeapSort implements SortUtil.Sort{ T=lir%q  
p.{9OrH(4  
/* (non-Javadoc) r&F(VF0 6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W 2/`O?  
*/ y bWb'+x  
public void sort(int[] data) { Vgy}0pCl  
MaxHeap h=new MaxHeap(); Fkgnc{NI  
h.init(data); xWkCP2$?P  
for(int i=0;i h.remove(); >E*j4gg  
System.arraycopy(h.queue,1,data,0,data.length); JkT , i_  
} T)%34gN  
9 Yv;Dom  
private static class MaxHeap{ uJ:'<dJ  
@C[]o.r  
void init(int[] data){ Y1 e>P  
this.queue=new int[data.length+1]; !uaV6K  
for(int i=0;i queue[++size]=data; 6ww4ZH?j  
fixUp(size); k.Tu#7  
} m1,?rqeb  
} 1J$sIY,Ou  
aXi5~,Ks_  
private int size=0; 7R9S%  
?^TjG)e7  
private int[] queue; 7WZ).,qxY  
d=<"sHO  
public int get() { E,"?RbG  
return queue[1]; J:s^F n  
} )$18a  
_`6fGu& W  
public void remove() { C.SG m  
SortUtil.swap(queue,1,size--); _ _x2xtrH  
fixDown(1); C@!C='b,  
} z}I4m  
file://fixdown e[txJ*SuO  
private void fixDown(int k) { SplEY!.k  
int j; gFk~SJd  
while ((j = k << 1) <= size) { `-)!4oJ]  
if (j < size %26amp;%26amp; queue[j] j++; l=(4o4um  
if (queue[k]>queue[j]) file://不用交换 8r7}6  
break; u=a5Z4N'  
SortUtil.swap(queue,j,k); (Uo:WyVj|F  
k = j; fiDwa ;,  
} g3B zi6$m  
} #vk-zx*v7=  
private void fixUp(int k) { .xXe *dm%  
while (k > 1) { F$TNYZ  
int j = k >> 1; ?m&?BsW$)  
if (queue[j]>queue[k]) /S}0u}jID?  
break; wps`2`z  
SortUtil.swap(queue,j,k); PnB%vS  
k = j; QbGc 9MM  
} <]f ru1  
} SM>V o+  
#$h~QBg  
} &Nf10%J'<  
Tac7+=T  
} LKtug>Me  
~jK'n4  
SortUtil: b"U{@  
')pXQ  
package org.rut.util.algorithm; unE h  
i:ar{ q  
import org.rut.util.algorithm.support.BubbleSort; :W'Yt9v)  
import org.rut.util.algorithm.support.HeapSort; XA8{N  
import org.rut.util.algorithm.support.ImprovedMergeSort; X+l &MD  
import org.rut.util.algorithm.support.ImprovedQuickSort; sGx"j a +  
import org.rut.util.algorithm.support.InsertSort; xyGk\= S  
import org.rut.util.algorithm.support.MergeSort; 6nxX~k  
import org.rut.util.algorithm.support.QuickSort; F,2)Udim  
import org.rut.util.algorithm.support.SelectionSort; C'bW3la  
import org.rut.util.algorithm.support.ShellSort; YGp8./ma<I  
{J`Zl1_q  
/** wwnl_9a  
* @author treeroot " 9=F/o9  
* @since 2006-2-2 !Pnvqgp/  
* @version 1.0 $[zy|Y(  
*/ bzFwQi}>  
public class SortUtil { O*MC"%T  
public final static int INSERT = 1; }UwDHq=  
public final static int BUBBLE = 2; l{U-$}  
public final static int SELECTION = 3; 9b`J2_ ]k  
public final static int SHELL = 4; U=_O*n?N-d  
public final static int QUICK = 5; XA`<*QC<  
public final static int IMPROVED_QUICK = 6;  .PyPU]w  
public final static int MERGE = 7; |Sg FHuA  
public final static int IMPROVED_MERGE = 8; xE/r:D#  
public final static int HEAP = 9; Nh7D&#z  
8v&4eU'S  
public static void sort(int[] data) { 1+;Z0$edxz  
sort(data, IMPROVED_QUICK); %T:~N<8)  
} _c*0Rr  
private static String[] name={ $~M#msK9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /15e-(Zz/  
}; g_ z%L?N  
n W2[x;  
private static Sort[] impl=new Sort[]{ u<`CkYT  
new InsertSort(), ?C#=Q6  
new BubbleSort(), Q v/}WnBk  
new SelectionSort(), [}snKogp  
new ShellSort(), kh3PEq   
new QuickSort(), _tE`W96J  
new ImprovedQuickSort(), #R&D gt  
new MergeSort(), Hm=!;xAFX  
new ImprovedMergeSort(), P;R`22\3  
new HeapSort() zUg-M  
}; -)%l{@Mr  
qaK9E@l  
public static String toString(int algorithm){ BU|=`Kb|))  
return name[algorithm-1]; ?#|Y'%a"  
} M7R.? nk  
J!sIxwF  
public static void sort(int[] data, int algorithm) { -h&AO\*^W  
impl[algorithm-1].sort(data); >;Er[Rywr  
} mSSDV0Pfn  
`TvpKS5.Y  
public static interface Sort { Ps3wg=ni[  
public void sort(int[] data); AH$D./a  
} hS) X`M  
>5Vv6_CI0?  
public static void swap(int[] data, int i, int j) { H+&c=~D\_  
int temp = data; {(r`&[  
data = data[j]; w i,}sEoM  
data[j] = temp; yyZV/ x~  
} $ZSjq  
} [[(29|`]  
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