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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。 D3 +|Os)  
插入排序: 2:.$:wS  
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package org.rut.util.algorithm.support; i]zh8|">  
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import org.rut.util.algorithm.SortUtil; ([JFX@  
/** 3mE8tTA$R  
* @author treeroot s!09cS  
* @since 2006-2-2 ,EH-Sf2Cb  
* @version 1.0 Mf"(P.GIS  
*/ =S^vIo)  
public class InsertSort implements SortUtil.Sort{ kdA]gpdw  
Z^F>sUMR  
/* (non-Javadoc) tm34Z''.>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mFpj@=^_G  
*/ y54RD/`-  
public void sort(int[] data) { oM n'{+(w  
int temp; 8f?o?c|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~Gg19x.#uW  
} `h'Ab63  
} {>R933fap  
} ][z!};  
YS9)%F=X  
} 'bji2#z[  
UT_t]m  
冒泡排序: <1sUK4nQ,  
Pmuk !V}f  
package org.rut.util.algorithm.support; R$/q=*k  
Nde1`W]:  
import org.rut.util.algorithm.SortUtil; 99zMdo S  
('_S1?y  
/** ^s8JW"H  
* @author treeroot ;h~kB  
* @since 2006-2-2 |c]L]PU  
* @version 1.0 BH^cR<<j  
*/ }/xdHt  
public class BubbleSort implements SortUtil.Sort{ q<g!bW%  
1{xkAy0  
/* (non-Javadoc) odeO(zuU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _=5\$6  
*/ ,E(M<n|.  
public void sort(int[] data) { wGz_IL.D  
int temp; F j"]C.6B.  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $iy(+}  
if(data[j] SortUtil.swap(data,j,j-1); 6>d 3*   
} '~6l 6wi  
} SZgan  
} +I~U8v-  
} tN)Vpb\J  
Q!fk|D+j  
} HBa6Y&)<  
G)5Uiu:^X  
选择排序: ||Wg'$3  
H,fVF837  
package org.rut.util.algorithm.support; ]G~u8HPH!m  
j1@PfKh  
import org.rut.util.algorithm.SortUtil; {>&M:_`k  
'xOH~RlE  
/** T6,6lll  
* @author treeroot v@!r$jZ  
* @since 2006-2-2 6`'KM/   
* @version 1.0 kdm@1x  
*/ ,+g0#8?p^x  
public class SelectionSort implements SortUtil.Sort { #4sSt-s&  
^[ >  
/* >F!X'#Iv  
* (non-Javadoc) ~;uW) [  
* T 6rjtq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X`}4=>  
*/ X0m6<q  
public void sort(int[] data) { f2$<4H hmm  
int temp; M<)Vtn  
for (int i = 0; i < data.length; i++) { IC.R4-  
int lowIndex = i; 5sMyH[5zY  
for (int j = data.length - 1; j > i; j--) { u7u1lx>S  
if (data[j] < data[lowIndex]) { iEBxBsz_  
lowIndex = j; fVBu?<=d  
} 6[1lK8o  
} Q mz3GH@wg  
SortUtil.swap(data,i,lowIndex); -F-,Gcos  
} ^W,x  
} kh*td(pfP9  
,6\oT;G  
} Mw $.B#  
qB=%8$J  
Shell排序: NEMC  
$5yH8JU  
package org.rut.util.algorithm.support; D|5Fo'O^AV  
k$K>ml/h  
import org.rut.util.algorithm.SortUtil; YcuHYf5  
k{C|{m  
/** )0@&pEObm  
* @author treeroot ^$\#aTyFK  
* @since 2006-2-2 {[FJkP2l  
* @version 1.0 H h;o<N>U  
*/ R 9Y k9v  
public class ShellSort implements SortUtil.Sort{ 7vsXfIP+  
(@u"   
/* (non-Javadoc) v%2Jm!i+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a`QKN rA2  
*/ m[*y9A1  
public void sort(int[] data) { 2k""/xMF'  
for(int i=data.length/2;i>2;i/=2){ cX-) ]D  
for(int j=0;j insertSort(data,j,i); /SYzo4(  
} WO6;K]  
} A&;Pt/#'  
insertSort(data,0,1); K"ytE2:3  
} RjQdlr6*  
r)t-_p37  
/** >!2d77I  
* @param data N u9+b"Wr  
* @param j qeZ*!H6-  
* @param i E@$HO_;&  
*/ c`G~.paY|  
private void insertSort(int[] data, int start, int inc) { #kDJ>r |&-  
int temp; ~Aq$GH4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %L;'C v  
} <q#/z&F!  
} ?f[U8S}  
} O0#9D'{  
~ f>km|Q{u  
} G-Ju`.  
(&Z`P  
快速排序: })@LvYK  
ZvO,1B  
package org.rut.util.algorithm.support; 6P*2Kg`  
J#& C&S 2  
import org.rut.util.algorithm.SortUtil; p^QB^HEV  
IGtqY8  
/** o8lwwM*  
* @author treeroot -nrfu)G  
* @since 2006-2-2 e!~x-P5M`  
* @version 1.0 }fKpih  
*/ 27KfT] =  
public class QuickSort implements SortUtil.Sort{ T8rf+B/.L  
g{06d~Y  
/* (non-Javadoc) cH%#qE3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0FD+iID  
*/ WKPuIE:  
public void sort(int[] data) { c 7uryL  
quickSort(data,0,data.length-1); A `n:q;my  
} kUG3_ *1 .  
private void quickSort(int[] data,int i,int j){ (t)a u  
int pivotIndex=(i+j)/2; K2R[u#Q  
file://swap i^'Uod0d.  
SortUtil.swap(data,pivotIndex,j); j8Csnm0  
${%*O}$  
int k=partition(data,i-1,j,data[j]); ~'l.g^p bv  
SortUtil.swap(data,k,j); y7CrH=^jc  
if((k-i)>1) quickSort(data,i,k-1); }PDNW  
if((j-k)>1) quickSort(data,k+1,j); 0if~qGm=!  
C|A:^6d3=  
} _~E&?zR2>"  
/** p#95Q  
* @param data PH}^RR{H[  
* @param i f}>S"fFI  
* @param j hd}"%9p  
* @return ~?)ST?&  
*/ mT2Fn8yC1  
private int partition(int[] data, int l, int r,int pivot) { jFBnP,WQ  
do{ %A<|@OSdOa  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R\wG3Oxol  
SortUtil.swap(data,l,r); lx&ME#~  
} 7Q9zEd" d  
while(l SortUtil.swap(data,l,r); [!E8C9Q#!  
return l; LMvsYc~]q  
} +wwK#ocw  
` cgS yRD]  
} ;tF7 GjEp  
fXHN m$"n  
改进后的快速排序: T;%ceLD  
_ %HyXd  
package org.rut.util.algorithm.support; 'j+J?Y^  
A"@C }f  
import org.rut.util.algorithm.SortUtil; ,4wZ/r> d  
Dab1^H!KT  
/** OW12m{  
* @author treeroot b}[W[J}`  
* @since 2006-2-2 vK?{Z^J][  
* @version 1.0 .{1MM8 Q  
*/ PiRbdl  
public class ImprovedQuickSort implements SortUtil.Sort { #'-L`])7uw  
v5 yOh5  
private static int MAX_STACK_SIZE=4096; u&>o1!c*P  
private static int THRESHOLD=10; huau(s0um  
/* (non-Javadoc) ^r<bi%@C$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e>kw>%3bl9  
*/ `"E|  
public void sort(int[] data) { F_$K+6  
int[] stack=new int[MAX_STACK_SIZE]; Iz#h:O  
(Js'(tBhiU  
int top=-1; r$*p  
int pivot; %HJ_0qg  
int pivotIndex,l,r; VlVd"jW  
WJ+<&6W8  
stack[++top]=0; EK^ld!g(  
stack[++top]=data.length-1; j/R  
.TURS  
while(top>0){ ;TK:D=p4  
int j=stack[top--]; av1*i3  
int i=stack[top--]; /EOtK|E  
{qm(Z+wcmb  
pivotIndex=(i+j)/2; Cp_YIcnEJ  
pivot=data[pivotIndex]; LV&tu7c  
G!54 e  
SortUtil.swap(data,pivotIndex,j); PT|W{RlNl  
$zTjh~ 9  
file://partition dOFxzk,g&R  
l=i-1; wL2d.$?TEg  
r=j; CW Y'q  
do{ Vl!Z|}z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~mtL\!vaM  
SortUtil.swap(data,l,r); L44-: 3  
} a<[@p  
while(l SortUtil.swap(data,l,r); 1@H3!V4  
SortUtil.swap(data,l,j); _AQ :<0/#  
:CN,I!:  
if((l-i)>THRESHOLD){ AG#5_0]P~  
stack[++top]=i; =S-'*F  
stack[++top]=l-1; 6M"]p  
} 6|05-x|  
if((j-l)>THRESHOLD){ $H/3t?6h`  
stack[++top]=l+1; ~PUz/^^ s  
stack[++top]=j; w$7*za2  
} 33\{S$p  
bgd1j,PWbW  
} aT#R#7<Eg  
file://new InsertSort().sort(data); UKx91a}g  
insertSort(data); Y XH9Q@Gn  
} oSt-w{ !  
/** EeKEw Sg  
* @param data r}P{opn$t  
*/ laqW {sX^5  
private void insertSort(int[] data) { X+{4,?04+  
int temp; 3_IuK 6K2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }@V(y9K  
} #`/KF_a3\>  
} CCX\"-C  
} }abM:O "Y  
g[j"]~  
} :JSOj@s  
)L`0VTw'M  
归并排序: 16o3ER  
H~@E&qd  
package org.rut.util.algorithm.support; @R?S-*o  
ocy fU=}X  
import org.rut.util.algorithm.SortUtil; X LPO_ tD  
"}|n;:r  
/** Hq^sU%  
* @author treeroot gQ*0Mk  
* @since 2006-2-2 r9G<HKl  
* @version 1.0 iwL\Ha  
*/ 8@qYzSx[  
public class MergeSort implements SortUtil.Sort{ 8J%^gy>m]  
dKw* L|5  
/* (non-Javadoc) B5!$5 Qc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {3C~cK{  
*/ :a}hd^;[%8  
public void sort(int[] data) { HW{osav9  
int[] temp=new int[data.length]; q[l},nw  
mergeSort(data,temp,0,data.length-1); &@A(8(%  
} :a3Pnq$]E  
5A /G?  
private void mergeSort(int[] data,int[] temp,int l,int r){ }@}jwi)l  
int mid=(l+r)/2; }7vX4{Yn  
if(l==r) return ; l.lXto.6)  
mergeSort(data,temp,l,mid); gmWRw{nS+  
mergeSort(data,temp,mid+1,r); )2z (l-$.  
for(int i=l;i<=r;i++){ 'uBW1,  
temp=data; L!DP*XDp  
} ^l ~i>:V  
int i1=l; S(Xab_DT)H  
int i2=mid+1; $\$5::}r  
for(int cur=l;cur<=r;cur++){ b3x!tuQn  
if(i1==mid+1)  8OZc:/  
data[cur]=temp[i2++]; U=p,drF,A  
else if(i2>r) z:|4S@9  
data[cur]=temp[i1++]; .wx; !9  
else if(temp[i1] data[cur]=temp[i1++]; zO2Z\E'% .  
else Zo22se0)  
data[cur]=temp[i2++]; nvxftbfE^D  
} N9Yc\?_NU_  
} Tul_/`An  
|~CN]N  
} x9~d_>'A  
7f'9Dm`  
改进后的归并排序: O(h4;'/E  
X&t)S?eCos  
package org.rut.util.algorithm.support; Nj qUUkc  
y:D|U!o2V  
import org.rut.util.algorithm.SortUtil; *8fnxWR   
Txfu%'2)e  
/** ZyT9y  
* @author treeroot FlRbGg^  
* @since 2006-2-2 +o!".Hp  
* @version 1.0 q.t>:`  
*/ 7Xm pq&g  
public class ImprovedMergeSort implements SortUtil.Sort { uOEy}&fH  
IBC P6[  
private static final int THRESHOLD = 10; NHUx-IqOX  
G{i}z^n  
/* <u*~RYA2  
* (non-Javadoc)  s6rdQI]  
* M/ 0!B_(R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1fm\5/}'`1  
*/ d /jO~+jP  
public void sort(int[] data) { "ZNiTND  
int[] temp=new int[data.length]; P(d4~hS  
mergeSort(data,temp,0,data.length-1); ^{_`jE  
} <jQ?l% \  
j{IAZs#@>  
private void mergeSort(int[] data, int[] temp, int l, int r) { gpe^G64c`  
int i, j, k; IR?ICXmtx  
int mid = (l + r) / 2; ?3Se=7 k  
if (l == r) M&~3fRb 4  
return; =E8lpN'  
if ((mid - l) >= THRESHOLD) g9H~\w  
mergeSort(data, temp, l, mid); vdYd~>w  
else {%'(IJ|5z  
insertSort(data, l, mid - l + 1); B5IS-d  
if ((r - mid) > THRESHOLD) B8'" ^a^&-  
mergeSort(data, temp, mid + 1, r); i))S%!/r~  
else cV_nYcLkz  
insertSort(data, mid + 1, r - mid); C#`eN{%.YT  
}L{en  
for (i = l; i <= mid; i++) { ync2X{9D  
temp = data; zJOjc/\  
} =GTltFqI1  
for (j = 1; j <= r - mid; j++) { GNA:|x  
temp[r - j + 1] = data[j + mid]; E#`=xg  
} {^1GHU  
int a = temp[l]; \Q|1I  
int b = temp[r]; G@oY2sM"  
for (i = l, j = r, k = l; k <= r; k++) { 3aQWzEnh  
if (a < b) { :t8(w>oW  
data[k] = temp[i++]; =M>1;Qr<Z/  
a = temp; D%N^iJC,9  
} else { =2BGS\$#  
data[k] = temp[j--]; j#"?Oe{_1  
b = temp[j]; t(-noy)  
} GN /]^{D  
} PCH&eTKN  
} RRqHo~*0  
)d bi  
/** W^i ct,t  
* @param data nKp='>Th  
* @param l Vz!W(+  
* @param i !krbGpTVH  
*/ ce\]o^4  
private void insertSort(int[] data, int start, int len) { p3`'i  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P}KN*Hn.  
} -LJbx<'  
} I#zrz3WU  
} %kS+n_*  
} U,yU-8z/  
$(H%|Oyn  
堆排序: }+h/2D  
^I@1y}xi  
package org.rut.util.algorithm.support; ZWQrG'$?o8  
k]!Fh^O~,  
import org.rut.util.algorithm.SortUtil; UJ 1iXV[h"  
)d!,,o  
/** 6e(|t2^  
* @author treeroot w?d~c*4+  
* @since 2006-2-2 QM=M<~<Voh  
* @version 1.0 8Gzc3  
*/ 4pq@o  
public class HeapSort implements SortUtil.Sort{ X(U CN0#  
?~$0;5)QC  
/* (non-Javadoc) )Ge.1B$8h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ~Jrtm7  
*/ ]y>)es1  
public void sort(int[] data) { -Mx"ox  
MaxHeap h=new MaxHeap(); !Low%rP  
h.init(data); r5h}o)J  
for(int i=0;i h.remove(); Sg(fZ' -  
System.arraycopy(h.queue,1,data,0,data.length); ~^cx a%  
} , \ |S BS  
 d!5C$C/x  
private static class MaxHeap{ CvKXVhf0$J  
"rOe J~4 X  
void init(int[] data){ $@"o BCc  
this.queue=new int[data.length+1]; yT%"<m6Y*\  
for(int i=0;i queue[++size]=data; >!MOgLO3  
fixUp(size);  ^E*W B~  
} oMawIND a  
} %Sr/'7 K  
f^z~{|%l!  
private int size=0; ZdJwy%  
I&?(=i)N  
private int[] queue; O}I8P")m  
hqIYo .<  
public int get() { N=^{FZ  
return queue[1]; r63_|~JVB<  
} 55MrsiW  
_\hZX|:]  
public void remove() { G=W!$(:  
SortUtil.swap(queue,1,size--); ~s{yh-B  
fixDown(1); 0OO$(R*  
} 3o&PVU? Q  
file://fixdown j/`- x  
private void fixDown(int k) { :Fz;nG-G  
int j; ?piv]Z  
while ((j = k << 1) <= size) { { </MC`  
if (j < size %26amp;%26amp; queue[j] j++; 4bLk+EY4A  
if (queue[k]>queue[j]) file://不用交换 SIv8EMGo  
break; "jqC3$DKI  
SortUtil.swap(queue,j,k); ^-?5=\`5  
k = j; S=H<5*]g  
} ++n"` ]o,  
} 6nqG;z-IXJ  
private void fixUp(int k) { ,#3u. =IR[  
while (k > 1) { {WQH  
int j = k >> 1; P0NGjS|Z{  
if (queue[j]>queue[k]) _PD RUJ  
break; X]ow5{e  
SortUtil.swap(queue,j,k); ~V&4<=r`  
k = j; gpW3zDJ  
} JRt^YX  
} v-M3/*  
q"xIW0Pc  
} ngJi;9X8*t  
>=Hm2daN  
} 6REv(E]  
3mKmd iD  
SortUtil: qD=o;:~Km  
NfvvwG;M  
package org.rut.util.algorithm; =67dpQ'y  
)';Rb$<Qn  
import org.rut.util.algorithm.support.BubbleSort; 5$Lo]H*  
import org.rut.util.algorithm.support.HeapSort; M\O6~UFq!  
import org.rut.util.algorithm.support.ImprovedMergeSort; Tap=K|b ]  
import org.rut.util.algorithm.support.ImprovedQuickSort; AoB~ZWq  
import org.rut.util.algorithm.support.InsertSort; VP[ -BK[  
import org.rut.util.algorithm.support.MergeSort; XDs )  
import org.rut.util.algorithm.support.QuickSort; 1T:M?N8J  
import org.rut.util.algorithm.support.SelectionSort; \?uaHX`1  
import org.rut.util.algorithm.support.ShellSort; "D0:Y(\  
dzJ\+ @4  
/** CA%p^4Q  
* @author treeroot 8Q&.S)hrN  
* @since 2006-2-2 !T;*F%G9  
* @version 1.0 rvO7e cR"  
*/ ~>u]ow=  
public class SortUtil { w:xLg.Eq6  
public final static int INSERT = 1; "Y0:Y?Vz"  
public final static int BUBBLE = 2; *)0bifw$&  
public final static int SELECTION = 3; c@9jc^CJ  
public final static int SHELL = 4; "^E/N},%u5  
public final static int QUICK = 5; PhBdm'  
public final static int IMPROVED_QUICK = 6; }% (e`[?1  
public final static int MERGE = 7; 7L~LpB  
public final static int IMPROVED_MERGE = 8; EH))%LY1y  
public final static int HEAP = 9; ?w'a^+H  
fDy Fkhc  
public static void sort(int[] data) { bl@0+NiM  
sort(data, IMPROVED_QUICK); 59K%bz5t  
} 0"q_c-_Bg  
private static String[] name={ %zj;~W;qPH  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Y@x }b{3  
}; HDqPqrWm  
LDlj4>%pW^  
private static Sort[] impl=new Sort[]{ VK\ Bjru9  
new InsertSort(), "#bL/b'{  
new BubbleSort(), bB^% O^:  
new SelectionSort(), k8fvg4  
new ShellSort(), _~!*|<A_  
new QuickSort(), !u~h.DrvZ  
new ImprovedQuickSort(), b]S4\BBT  
new MergeSort(),  .b] 32Ww  
new ImprovedMergeSort(), W+k`^A|@  
new HeapSort() P Z5BtDm  
}; 7tWt3  
P<P4*cOV  
public static String toString(int algorithm){ )zw}+z3st  
return name[algorithm-1]; B.wihJVDg  
} V_Z~$  
MgJiJ0y  
public static void sort(int[] data, int algorithm) { mXZOkx{  
impl[algorithm-1].sort(data); @Dc?fyY*o<  
} \2cbZQx  
jP'.a. ^o$  
public static interface Sort { wI'8B{[  
public void sort(int[] data); xK4b(KJj  
} Cb}hE ro  
,VZ;=  
public static void swap(int[] data, int i, int j) { b;$ -s \%  
int temp = data; Ju5<wjQR\  
data = data[j]; >C""T`5]  
data[j] = temp; XVXiiQ^  
} { ?p55o  
} !(\OT  
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