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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。 4I-p/&Q  
插入排序: Fsf22  
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package org.rut.util.algorithm.support; o x^lI  
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import org.rut.util.algorithm.SortUtil; "Y!dn|3  
/** 4l''/$P  
* @author treeroot  YBD{l  
* @since 2006-2-2 AD\<}/3U  
* @version 1.0 L:M9|/  
*/ .A\\v6@  
public class InsertSort implements SortUtil.Sort{ xp&!Cl>C3\  
S=}~I  
/* (non-Javadoc) mr!I}I7x&x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DQ\&5ytP  
*/ yj~"C$s  
public void sort(int[] data) { E aD@clJS  
int temp; =%\6}xPEl<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EKPTDKut  
} qDM[7q3.  
} +q/h:q.TV  
} Qu,k  
jw[BtRW  
} *Zi%Q[0Me  
p'uz2/g  
冒泡排序: $ rYS   
&=Zg0Q  
package org.rut.util.algorithm.support; CFm1c1%Hg  
HY4E  
import org.rut.util.algorithm.SortUtil; F2$bUY  
nb_^3K]r  
/** 2<G1'7)  
* @author treeroot q|X4[E|{Q  
* @since 2006-2-2 qffSq](D.  
* @version 1.0 f_!`~`04  
*/ L~{Vt~H9"  
public class BubbleSort implements SortUtil.Sort{ Qe$>Jv5  
!>< %\K  
/* (non-Javadoc) r ` &|)Hx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yim$y, =d  
*/ 50ew/fZj|  
public void sort(int[] data) { pPqN[OJ  
int temp; 0l: pWc  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ph?0I: eU  
if(data[j] SortUtil.swap(data,j,j-1); <cv1$ x ~P  
} 3DAGW"F  
} %hbLT{w  
} ,/6:bc:W  
} (?BgT i\  
X8 )>}#:  
} bH/pa#G(  
1?RCJ]e5  
选择排序: 4)HWPX  
P"h\7V,d%  
package org.rut.util.algorithm.support; RzRvu]]8  
p=+*g.,O  
import org.rut.util.algorithm.SortUtil; O^Vy"8Ji}y  
M`P]cX)x  
/** OawrS{  
* @author treeroot Z 'NbHwW}  
* @since 2006-2-2 D}/=\J/  
* @version 1.0 Hu9R.[u  
*/ lF8 dRIav  
public class SelectionSort implements SortUtil.Sort { o,Zng4NY  
O*03PF^  
/* ]cqZ!4?_  
* (non-Javadoc) z|]oM#Gt  
* !mxh]x<e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o9LD6$  
*/ 1O2h9I$bk  
public void sort(int[] data) { %DRy&k/T  
int temp; ]jVSsSv  
for (int i = 0; i < data.length; i++) { bp>ps@zFq  
int lowIndex = i; ; G59}d p~  
for (int j = data.length - 1; j > i; j--) { ^ wF@6e7/&  
if (data[j] < data[lowIndex]) { 4@]xn  
lowIndex = j; #* gU[9U~  
} _'hCUXeY'  
} KTK6#[8A  
SortUtil.swap(data,i,lowIndex); DV[ Jbl:)  
} @`;Y/',  
} Pkx(M E  
v^],loi<V  
} R;E"Qdt  
mU+FQX  
Shell排序: oiv2rOFu  
8<-oJs_o+  
package org.rut.util.algorithm.support; 5d?!<(e6  
JNFT6T)T15  
import org.rut.util.algorithm.SortUtil; ?gR\A8:8  
nG ^M 2)(8  
/** 2b4pOM7W  
* @author treeroot J7?)$,ij%  
* @since 2006-2-2 ]v@tZ}  
* @version 1.0 Iwt2}E(e  
*/ @b!R2Yq  
public class ShellSort implements SortUtil.Sort{ "dK|]w8  
y/}VtD  
/* (non-Javadoc) OHP3T(Q5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {|5$1v   
*/ ?]\W8)  
public void sort(int[] data) { < k+fKl  
for(int i=data.length/2;i>2;i/=2){ e.}3OK  
for(int j=0;j insertSort(data,j,i); LD~Jbq  
} `F2*o47|t  
} 3_oD[ ])A  
insertSort(data,0,1); {"0TO|%x  
} B)DC,+@$  
Jl> at  
/** D){"fw+b  
* @param data 2[LX\  
* @param j gl9pgY1ni  
* @param i @r/Id{pCI  
*/ 8XYD L] I'  
private void insertSort(int[] data, int start, int inc) { urrO1  
int temp; u_4:#~b  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?b@q5Y  
} *H%0Gsk  
} 6>=-/)p}  
} $ o5V$N D  
T^'*_*m  
}  ?+ -/';  
FI`nRFq)C  
快速排序: (pE\nuA\  
T+K` ^xv_L  
package org.rut.util.algorithm.support; %;<k(5bhGJ  
J\xz^%p  
import org.rut.util.algorithm.SortUtil; ycrh5*g  
)'j_D<  
/** )l!J$X+R  
* @author treeroot h{W$ fZc<  
* @since 2006-2-2 Y|m_qB^_  
* @version 1.0 qD(fYOX{C  
*/ bIb6yVnHi  
public class QuickSort implements SortUtil.Sort{ u+mjguIv  
Q$?7)yyu+  
/* (non-Javadoc) *#Lsjk~_-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G>=9gSLM  
*/ s<Ex"+  
public void sort(int[] data) { ReI=4Jq11  
quickSort(data,0,data.length-1); N?a1sdR  
} P&[Ft)`  
private void quickSort(int[] data,int i,int j){ :jk)(=^  
int pivotIndex=(i+j)/2; mh A~eJ  
file://swap 'ZGT`'ri  
SortUtil.swap(data,pivotIndex,j); hF{x')(#l  
jU]]:S4xD/  
int k=partition(data,i-1,j,data[j]); `P^u:  
SortUtil.swap(data,k,j); &547`*  
if((k-i)>1) quickSort(data,i,k-1); BaWQ<T8p8  
if((j-k)>1) quickSort(data,k+1,j); [!J @a  
Q? <-`7  
} ?qf:_G  
/** =E [4H  
* @param data $@[dm)M  
* @param i J ?ztn  
* @param j DA+A >5/  
* @return ZL4l (&"  
*/ n0+g]|a AF  
private int partition(int[] data, int l, int r,int pivot) { g[#k.CuP  
do{ 'DCKD4@C/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }b_R5U$@@  
SortUtil.swap(data,l,r); lfxuc7Rdla  
} Bmx(qE  
while(l SortUtil.swap(data,l,r); C<[d  
return l; w8 ?Pb$Fe  
} mP9cBLz  
q Z8|B  
} G0I~&?nDa  
TJHN/Z/  
改进后的快速排序: 8%;}LK  
<Jwi ~I=^  
package org.rut.util.algorithm.support; &K5C=]4  
K-2.E  
import org.rut.util.algorithm.SortUtil; BW'L.*2  
wXr>p)mP  
/** aL8p"iSG9  
* @author treeroot i{TIm}_\  
* @since 2006-2-2 bK ?1MiXb  
* @version 1.0 Y brx%  
*/ :dc"b?Ch  
public class ImprovedQuickSort implements SortUtil.Sort { c@RT$Q9j  
|. J,8~x  
private static int MAX_STACK_SIZE=4096; E|HSwTHe  
private static int THRESHOLD=10; 9U#\nXM  
/* (non-Javadoc) Z{Vxr*9oO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  FovE$Dj]  
*/ OZ(Dpx(Q  
public void sort(int[] data) { /C*~/}  
int[] stack=new int[MAX_STACK_SIZE]; B3y?.  
%*$5!;  
int top=-1; {V}t'x`4c  
int pivot; y=[gQJ6~r  
int pivotIndex,l,r; lq:]`l,6@  
Sp 7u_Pq{  
stack[++top]=0; c:=7lI  
stack[++top]=data.length-1; `%$8cZ-kr  
_R EqT  
while(top>0){ `+roQX.p  
int j=stack[top--]; C1h#x'k  
int i=stack[top--]; y\^@p=e  
8<YX7e  
pivotIndex=(i+j)/2; nAIH`L"X  
pivot=data[pivotIndex]; 5JS ZLC  
xLA~1ZSVJw  
SortUtil.swap(data,pivotIndex,j); nYOY"'z  
+J"'  'cZ  
file://partition n4^~gT%b5]  
l=i-1; L<bYRGz  
r=j; 4F}Pu<;  
do{ (V$Zc0  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9 0X?1  
SortUtil.swap(data,l,r); HwB {8S?sm  
} znt)]>f#  
while(l SortUtil.swap(data,l,r); ?F ce!J  
SortUtil.swap(data,l,j); RTK}mhnV  
inYM+o!Ub  
if((l-i)>THRESHOLD){ i][f#e4  
stack[++top]=i; F 4GP7]  
stack[++top]=l-1; gh TcB  
} 8jRs =I  
if((j-l)>THRESHOLD){ /r276Q  
stack[++top]=l+1; -7k[Vg?  
stack[++top]=j; DeH0k[o  
} ^uia`sOP4  
a*D,*C5}  
} v9u<F6  
file://new InsertSort().sort(data); ERF,tLa!  
insertSort(data); !6M Bxg>  
} ar Q)%W  
/** %Nj #0YF]  
* @param data QS^~77q  
*/ BU!#z(vU  
private void insertSort(int[] data) { J5;5-:N  
int temp; ndr)3tuYu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s8^~NX(xdy  
} 88 {1mA,v  
} fO6[!M(  
} xPt*CB  
G%S6$@:  
} /?Vdqci  
_l<mu?"  
归并排序: cg,Ua!c  
@@Q6TB  
package org.rut.util.algorithm.support; [q1Unm  
}g>kpa0c  
import org.rut.util.algorithm.SortUtil; Y=E9zUF  
Rv,82iEKs  
/** qYK4)JP  
* @author treeroot @M=$qO_$9  
* @since 2006-2-2 !x7o|l|cP  
* @version 1.0 \]I  
*/ T '.[F  
public class MergeSort implements SortUtil.Sort{ rIVvO  
)Ob]T{GY  
/* (non-Javadoc) X'f)7RbT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \b$<J.3  
*/ 5X0QxnnV  
public void sort(int[] data) { Z ] '>  
int[] temp=new int[data.length]; r?pZ72 q  
mergeSort(data,temp,0,data.length-1); 1SUzzlRx  
} ll%G!VR  
sm   
private void mergeSort(int[] data,int[] temp,int l,int r){ je,c7ZFO  
int mid=(l+r)/2; /YFa ;2 W  
if(l==r) return ; Q/py qe G  
mergeSort(data,temp,l,mid); qEQAn/&  
mergeSort(data,temp,mid+1,r); \]8VwsP  
for(int i=l;i<=r;i++){ } ~F~hf>s  
temp=data;  MGQ,\55"  
} +< yhcSSTB  
int i1=l; Wwhgo.Wx  
int i2=mid+1; G6V/SaD  
for(int cur=l;cur<=r;cur++){ V.8%|-d  
if(i1==mid+1) vM(Xip7  
data[cur]=temp[i2++]; 3rNc1\a;  
else if(i2>r) Yl~$V(  
data[cur]=temp[i1++]; "]#'QuR  
else if(temp[i1] data[cur]=temp[i1++]; ul@3 Bt  
else I^G^J M!  
data[cur]=temp[i2++]; h=6xZuA\  
} F+uk AT  
} Q_]~0PoH  
Ux}W&K/?'  
} |gv{z"  
Efx=T$%^&  
改进后的归并排序: 90fs:.  
>F[GVmC  
package org.rut.util.algorithm.support; KQ{Lt?S  
a8Uk[^5  
import org.rut.util.algorithm.SortUtil; uE`r/=4  
{q,?<zBzu  
/** Qdu$Os  
* @author treeroot |9IC/C!HC  
* @since 2006-2-2  )3%@9  
* @version 1.0 ^H3m\!h  
*/ 'wvMH;}u  
public class ImprovedMergeSort implements SortUtil.Sort { ;7Okyj6EP  
uw33:G  
private static final int THRESHOLD = 10; t'g^W  
;iU%Kt  
/* JoJukoy}F  
* (non-Javadoc) g1{/ 5{XI  
* XA{F:%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m5*[t7@%  
*/ :Fe_,[FR  
public void sort(int[] data) { =K(JqSw+M  
int[] temp=new int[data.length]; fx)KNm8Lx  
mergeSort(data,temp,0,data.length-1); I\zemW!  
} E^wyD-ii/  
S!h Xf|*0[  
private void mergeSort(int[] data, int[] temp, int l, int r) { zkexei4^<  
int i, j, k; kRlA4h1u_$  
int mid = (l + r) / 2; {kL&Rv%'  
if (l == r) g^l RG3a  
return; Ur!~<4GO  
if ((mid - l) >= THRESHOLD) eT[&L @l]b  
mergeSort(data, temp, l, mid); %>zjGF<  
else m Ni2b*k  
insertSort(data, l, mid - l + 1); 2*2:-o cl$  
if ((r - mid) > THRESHOLD) z%sy$^v@vD  
mergeSort(data, temp, mid + 1, r); I[D8""U  
else BzN@gQo  
insertSort(data, mid + 1, r - mid); |^( M{  
,T|x)"uA`  
for (i = l; i <= mid; i++) { U~H?4Izl=  
temp = data; cWa)#:JOV  
} U>F{?PReA?  
for (j = 1; j <= r - mid; j++) { cyQBqG  
temp[r - j + 1] = data[j + mid]; H}ZQ?uK;  
} |V|+lx'sc  
int a = temp[l]; %3o`j<  
int b = temp[r]; =&vFVIhWcf  
for (i = l, j = r, k = l; k <= r; k++) { q \O Ou  
if (a < b) { !SxG(*u  
data[k] = temp[i++]; & mt)d  
a = temp; O0hu qF$K  
} else { iw\%h9  
data[k] = temp[j--]; tFM$#JN  
b = temp[j]; 57Z-  
} h`Tz5% n  
} L/Vx~r`P  
} vH[Pb#f-  
 {mTytT  
/** 42+#<U7T  
* @param data )9L/sKz  
* @param l 2k5/SV X  
* @param i $yu?.b 9H#  
*/ ub K7B |p  
private void insertSort(int[] data, int start, int len) { rv7{Ow_Y  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [L(h G a  
} nxo+?:**  
} yI3kvh  
} BRv x[u  
} T .n4TmF  
1^G{tlA-  
堆排序: ,[!LCXp  
DjLL|jF  
package org.rut.util.algorithm.support;  L,LNv  
M;.ZM<Ga  
import org.rut.util.algorithm.SortUtil; W?Ww2Lo%Y  
>:1P/U  
/** RU#F8O  
* @author treeroot 1/Zh^foG  
* @since 2006-2-2 ,wAz^cK|  
* @version 1.0 $}o b,i^W  
*/ tTanW2C  
public class HeapSort implements SortUtil.Sort{ 'LSz f/w  
& ,hr8  
/* (non-Javadoc) 7cTk@Gq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D Ml?o:l  
*/ >m6&bfy\q  
public void sort(int[] data) { y 1\'( 1  
MaxHeap h=new MaxHeap(); & E}mX]t  
h.init(data); z=Cr7-  
for(int i=0;i h.remove(); mUoIJ3fv_,  
System.arraycopy(h.queue,1,data,0,data.length); 5:.{oSy7n  
} =O$M_1lp  
kG0Yh2;#  
private static class MaxHeap{ kg97S  
:iF%cy.  
void init(int[] data){ gm)@c2?.  
this.queue=new int[data.length+1]; G }nO@  
for(int i=0;i queue[++size]=data; t18$x "\4k  
fixUp(size); `3_lI~=eH  
} CH#k(sy  
} f 2YLk  
bBc-^  
private int size=0; ]9 w76Z  
$ &UZy|9  
private int[] queue; z@ 35NZn  
[<c&|tfl  
public int get() { ci9R.U)  
return queue[1]; L=; -x9  
} ??&<k   
rNDrp@A>  
public void remove() { ~@W*r5/  
SortUtil.swap(queue,1,size--); Kg\R+i@#<  
fixDown(1); K }$&:nao  
} 3L5r*fa  
file://fixdown U9hS<}<Ki  
private void fixDown(int k) { OQ&'Dti  
int j; RP4Ku9hk  
while ((j = k << 1) <= size) { eD?3"!c!  
if (j < size %26amp;%26amp; queue[j] j++; j]rz] k  
if (queue[k]>queue[j]) file://不用交换 uBrMk  
break; DGESba\2+  
SortUtil.swap(queue,j,k);  ;q>9W,jy  
k = j; zCaT tb|@  
} XzIx:J6  
} w?Ju5 5  
private void fixUp(int k) { R9+jW'[K  
while (k > 1) { V9NTs8LKc  
int j = k >> 1; k?GD/$1t  
if (queue[j]>queue[k]) iA }vKQ  
break; 5s{j = .O  
SortUtil.swap(queue,j,k); ;]2s,za)qs  
k = j; SkQswH  
} EbNd=Z'J  
} Dh4 6o|P  
8 .>/6M  
} l`9t}  
0#o/^Ah  
} k(VB+k"3  
,5 j"ruZ  
SortUtil: B=f,QU  
~Ou1WnmO  
package org.rut.util.algorithm; ,MPB/j^o5!  
Gbpw5n;e  
import org.rut.util.algorithm.support.BubbleSort; rZXrT}Xh{W  
import org.rut.util.algorithm.support.HeapSort; 2S[-$9  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5Qwh(C^H  
import org.rut.util.algorithm.support.ImprovedQuickSort; xgu `Q`~  
import org.rut.util.algorithm.support.InsertSort; cf_|nL#9  
import org.rut.util.algorithm.support.MergeSort; x3+oAb@o/  
import org.rut.util.algorithm.support.QuickSort; I?#85l{>  
import org.rut.util.algorithm.support.SelectionSort; 9p* gU[  
import org.rut.util.algorithm.support.ShellSort; HvwYm.$zE  
`mfq 2bVc  
/** K6JVg$  
* @author treeroot n{0Ld - zH  
* @since 2006-2-2 CK+d!Eg  
* @version 1.0 K kW;-{c  
*/ -7H^n#]  
public class SortUtil { EI>l-N2  
public final static int INSERT = 1; #FOqP!p.E  
public final static int BUBBLE = 2; Cs3^9m6;d  
public final static int SELECTION = 3; y;cUl, :v  
public final static int SHELL = 4; zdl%iop3e  
public final static int QUICK = 5; = {'pUU  
public final static int IMPROVED_QUICK = 6; 3\O|ii  
public final static int MERGE = 7; h Ov={:  
public final static int IMPROVED_MERGE = 8; rHge~nY<  
public final static int HEAP = 9; J@pb[OL,  
(:V>Hjt  
public static void sort(int[] data) {  +ECDD'^!  
sort(data, IMPROVED_QUICK); _Q%vK*n  
} ^g1f X1  
private static String[] name={ S{]7C?4`  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0-Y:v(|.  
}; Jq.lT(E8D  
O=cxNy-I  
private static Sort[] impl=new Sort[]{ u6V/JI}g  
new InsertSort(), s'aip5P  
new BubbleSort(), wFh8?Z3u_  
new SelectionSort(), [D "t~QMr  
new ShellSort(), Y}*\[}l:&x  
new QuickSort(), 'n QVj  
new ImprovedQuickSort(), 7tM9u5FF  
new MergeSort(), sZWaV4  
new ImprovedMergeSort(), g>0XxjP4  
new HeapSort() B$3 ?K  
}; tY${M^^<J  
8(g:HR*;  
public static String toString(int algorithm){ qLL,F  
return name[algorithm-1]; [H\:pP8t  
} 54;J8XT7  
WL,&-*JAW  
public static void sort(int[] data, int algorithm) { rB~W Iu  
impl[algorithm-1].sort(data); >KLtY|o)  
} AUVgPXOwd  
qW:)!z3\  
public static interface Sort { G|w=ez  
public void sort(int[] data); up3O|lj4  
} -4rDbDsr  
kd:$oS_*s  
public static void swap(int[] data, int i, int j) { 1be %G [*  
int temp = data; 1axQ)},o@p  
data = data[j]; Ab%;Z5$fr  
data[j] = temp; EFuvp8^y  
} W!blAkM%i  
} mME 4 l  
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