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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。 F[(6*/46x  
插入排序: :;<\5Oy ^  
@F~0p5I  
package org.rut.util.algorithm.support; pNBa.4z:  
dJaEoF  
import org.rut.util.algorithm.SortUtil; =;g=GcVK  
/** QWKs[yfdo  
* @author treeroot )I?RMR  
* @since 2006-2-2 y 'mlee  
* @version 1.0 #,)P N @P  
*/ 3^'#ny?l  
public class InsertSort implements SortUtil.Sort{ 6,a%&1_  
ujow?$&  
/* (non-Javadoc) 9ec0^T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E+:.IuXW$  
*/ G~O" /WM  
public void sort(int[] data) { X+d&OcO=q  
int temp; `|uoqKv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~DK F%}E  
} }]tFz}E\  
} l~4_s/  
} ::0aY ;D2  
G^ K*+  
} AmgWj/>  
m&,bC)}  
冒泡排序: #!wsD7;  
9N<*S'Z  
package org.rut.util.algorithm.support; zLo;.X[Y  
KxGKA  
import org.rut.util.algorithm.SortUtil; |x*{fXdMhr  
nD(w @c?  
/** <r0.ppgY  
* @author treeroot ~@[(U!G  
* @since 2006-2-2 hyM'x*  
* @version 1.0 F [r|Y-c]  
*/ _`slkw P.  
public class BubbleSort implements SortUtil.Sort{ d\\r_ bGW  
Ck:#1-t8{  
/* (non-Javadoc) OuMco+C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >7"$}5d  
*/ "^Y6ctw  
public void sort(int[] data) { }7-7t{G  
int temp; `Fz\wPd  
for(int i=0;i for(int j=data.length-1;j>i;j--){ &3jBE --  
if(data[j] SortUtil.swap(data,j,j-1); ;HR 6X  
} VjC*(6<Gj  
} te4F"SEf  
} /A0 [_  
} h=!M6yap<  
: x>I- 3G  
} P"oYC$  
f<'n5}{RO0  
选择排序: a$~IQ2$|6  
m*\B2\2gJ  
package org.rut.util.algorithm.support; f2`P8$U)R  
B{[f}h.n  
import org.rut.util.algorithm.SortUtil; R|nEd/' <  
~?2rGE  
/** #Tup]czO  
* @author treeroot (zjz]@qJ  
* @since 2006-2-2 bELIRM9  
* @version 1.0 71JM [2  
*/ )3BR[*u*  
public class SelectionSort implements SortUtil.Sort { =X)Q7u".7  
,Le&I9*%  
/* A Z]P+v  
* (non-Javadoc) -08&&H  
* (Nm}3p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t|go5DXz4  
*/ AD~~e% s=  
public void sort(int[] data) { 8f /T!5  
int temp; a v'd%LZP  
for (int i = 0; i < data.length; i++) { [`y:M&@  
int lowIndex = i; C}n[?R  
for (int j = data.length - 1; j > i; j--) { i_[^s:*T  
if (data[j] < data[lowIndex]) { ?SB[lbU  
lowIndex = j;  $&ex\_W  
} sI^@A=.@  
} $,8CH)w  
SortUtil.swap(data,i,lowIndex); R;0W+!fE  
} ZM dM_i?  
} UOn!Y@  
7(yXsVq  
} }f<fgY  
Uuwq7oFub  
Shell排序: +vSCR (n  
6{b%Jfo  
package org.rut.util.algorithm.support; Wv6z%r<  
,k4z;  
import org.rut.util.algorithm.SortUtil; >2]Eaw&W  
* i=?0M4S  
/** w{_e"N  
* @author treeroot 04I6 -}6  
* @since 2006-2-2 Y&oP>n! ei  
* @version 1.0 ):/<H  
*/ y_}K?  
public class ShellSort implements SortUtil.Sort{ } l:mN  
}2-[Ki yv  
/* (non-Javadoc) z*Myokhf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9\AEyaJFZ  
*/  1m&!l6Jk  
public void sort(int[] data) { ^U-vD[O8  
for(int i=data.length/2;i>2;i/=2){ Sf+(1_^`t  
for(int j=0;j insertSort(data,j,i); zF[3%qZE:T  
} 4]Un=?)I  
} Paae-EmC  
insertSort(data,0,1); 2(+RIu0d  
} m1^dT_7Z  
&(5^v w<0  
/** 5W?yj>JR  
* @param data g28S3 '2  
* @param j 8L]gQ g  
* @param i {B'Gm]4  
*/ "7To c4  
private void insertSort(int[] data, int start, int inc) { ^q4l4)8jX  
int temp; yRgDhA  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); b5iIV1g  
} hN>('S-cq  
} JxX jDYrU  
} 0C7thl{Dms  
;']vY  
} .fio<mqi  
n4ds;N3Hd  
快速排序: X";QA":  
iFAoAw(  
package org.rut.util.algorithm.support; 377j3dP  
M9uH&CD6U  
import org.rut.util.algorithm.SortUtil; H$k![K6Uj  
'DL;c@}37  
/** zPX=MfF  
* @author treeroot @&~OB/7B:  
* @since 2006-2-2 a z:~{ f*-  
* @version 1.0 <6d{k[7fz)  
*/ +XU$GSw3(  
public class QuickSort implements SortUtil.Sort{ n.Ur-ot  
%0ll4"  
/* (non-Javadoc) D{,[\^c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *@\?}cX  
*/ 9 NGeh*`  
public void sort(int[] data) { .LeF|EQU\@  
quickSort(data,0,data.length-1); 9G`FY:(K  
} >.!5M L\  
private void quickSort(int[] data,int i,int j){ 9E->;0-  
int pivotIndex=(i+j)/2; H3p4,Y}'#  
file://swap g(@$uJ  
SortUtil.swap(data,pivotIndex,j); ^Ff~j&L@{  
y]z)jqX<  
int k=partition(data,i-1,j,data[j]); ?1-n\ka  
SortUtil.swap(data,k,j); aIzp\$NWVK  
if((k-i)>1) quickSort(data,i,k-1); [#STR=_f  
if((j-k)>1) quickSort(data,k+1,j); zVc7q7E  
g9FVb7In_  
} Ov~S2?E8  
/** Rk437vQD,  
* @param data 2;Y@3d:z  
* @param i yZj}EBa  
* @param j ;qT!fuN;  
* @return h+zkVRyA  
*/ JR? )SGB  
private int partition(int[] data, int l, int r,int pivot) { i(&6ys5  
do{ ^|F Vc48{  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); s60:0>  
SortUtil.swap(data,l,r); NE=#5?6%g7  
} r2E>sHw  
while(l SortUtil.swap(data,l,r); .(MbP  
return l; i#M a -0#  
} Y1U"HqNl*  
{E3<GeHw4  
} {.' ,%)  
S,wj[;cv4  
改进后的快速排序: bG?WB,1  
Dho[{xJ46  
package org.rut.util.algorithm.support; S2At$47v  
7{kpx$:_  
import org.rut.util.algorithm.SortUtil; QigoRB!z#9  
iS:PRa1  
/** pb/{ss+  
* @author treeroot ZVL- o<6  
* @since 2006-2-2 0w'y#U)&8  
* @version 1.0 }0Kqy;  
*/ },n,P&M\`  
public class ImprovedQuickSort implements SortUtil.Sort { :YRzI(4J  
U!;aM*67  
private static int MAX_STACK_SIZE=4096; XW&8T"q7  
private static int THRESHOLD=10; Q[ 9rA  
/* (non-Javadoc) :C|>y4U&(s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g'}`FvADi  
*/ @T,H.#bL  
public void sort(int[] data) { 7fN&Q~.  
int[] stack=new int[MAX_STACK_SIZE]; 7&RJDa:a7T  
li 3PR$W V  
int top=-1; v'bd.eqw  
int pivot; H(%] Os  
int pivotIndex,l,r; ?,i#B'Z^  
:m)Rmwn_  
stack[++top]=0; giSG 6'WA  
stack[++top]=data.length-1; ~*cY&  9  
@8Q+=abz  
while(top>0){ . tH35/r  
int j=stack[top--]; <R`,zE@t'(  
int i=stack[top--]; P/gb+V=g!  
y_7XYT!w  
pivotIndex=(i+j)/2; iu6WGm R  
pivot=data[pivotIndex];  Z@.ol Y  
}ygbgyLa  
SortUtil.swap(data,pivotIndex,j); #*>7X>,J  
@k:f}-t  
file://partition :AqnWy  
l=i-1; 1 <qVN'[  
r=j; 4|@FO}rK[l  
do{ 0LHiOav  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Kz3h]/A.  
SortUtil.swap(data,l,r); j]F#p R}p  
} #/B~G.+(  
while(l SortUtil.swap(data,l,r); MMxoKL  
SortUtil.swap(data,l,j); IYM@(c@ld0  
xeP;"J}  
if((l-i)>THRESHOLD){ u>Axq3F  
stack[++top]=i; QkCoW[sn  
stack[++top]=l-1; *p#YK|  
} &;@b&p+  
if((j-l)>THRESHOLD){ X!M fJ^)q  
stack[++top]=l+1; )ejXeg  
stack[++top]=j; &PQ{e8w  
} VQ,\O  
WEV{C(u<k!  
} K}5 $;W#  
file://new InsertSort().sort(data); A]SB c2   
insertSort(data); !7Nz W7j  
} t 1RwB23  
/** 8#Z\}gGz  
* @param data 9J;H.:WH  
*/ ^qzT5W\@  
private void insertSort(int[] data) { Alk* "p  
int temp; l~6SR  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9 <kkzy  
} %yuIXOJ  
} 4Utx 9^  
} #;*ai\6>vD  
4Tzu"y  
} ry'^1~,  
0.Ol@fO  
归并排序: =<FZ{4  
H;7H6fyZ  
package org.rut.util.algorithm.support; c"sw@<HG  
://|f  
import org.rut.util.algorithm.SortUtil; Dgq[g_+l  
D16;6K'{  
/** e~ 78'UH  
* @author treeroot \$HB~u%dr  
* @since 2006-2-2 !{~7)iq  
* @version 1.0 P2:Q+j:PX  
*/ X"khuyT_  
public class MergeSort implements SortUtil.Sort{ \q`+  
?xTeio44  
/* (non-Javadoc) >'1Q"$;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k2tX$\E  
*/ (zLIv9$  
public void sort(int[] data) { ]'ApOp  
int[] temp=new int[data.length]; CD<u@l,1  
mergeSort(data,temp,0,data.length-1); $ p1EqVu  
} rgZ rE;*;  
|xgCV@  
private void mergeSort(int[] data,int[] temp,int l,int r){ 8H`l"  
int mid=(l+r)/2; qyBK\WqaP  
if(l==r) return ; MdoWqpC  
mergeSort(data,temp,l,mid); q}A3"$-F  
mergeSort(data,temp,mid+1,r); cSs/XJZ  
for(int i=l;i<=r;i++){ S~(VcC$K  
temp=data; 7/OOq=z  
} o(SJuZC/U  
int i1=l; Z-p^3t'{  
int i2=mid+1; &$z1Hz+l  
for(int cur=l;cur<=r;cur++){ a3 _0F@I  
if(i1==mid+1) g$T_yT''  
data[cur]=temp[i2++]; 1]3bx N  
else if(i2>r)  { e  
data[cur]=temp[i1++]; ZE(RvPW  
else if(temp[i1] data[cur]=temp[i1++]; Sl<-)a:  
else NCM{OAjS5U  
data[cur]=temp[i2++]; N8(x),  
} .Zt/e>K&  
} 0JRB Nh  
ZG[0rvW  
} QEHZ=Yg%3  
W6/p-e5y  
改进后的归并排序: +#db_k  
z`:^e1vG  
package org.rut.util.algorithm.support; gGdYh.K&e5  
]:#$6D"  
import org.rut.util.algorithm.SortUtil; ds[Z=_Ll  
kuud0VWJ  
/** *U^I `j[u  
* @author treeroot BH*]OXW\  
* @since 2006-2-2 v%7JZ<I'A  
* @version 1.0 IguG0 3:.N  
*/ @dKf]&h%%  
public class ImprovedMergeSort implements SortUtil.Sort { }N9a!,{P=b  
]~M {@h!<  
private static final int THRESHOLD = 10; 9*Twx&  
m1; <T@  
/* k 5r*?Os  
* (non-Javadoc) v;qL? _:=c  
* vHe.+XY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F"#*8P  
*/ O xaua  
public void sort(int[] data) { 4wD^?S!p  
int[] temp=new int[data.length]; Q)X\VQcgj  
mergeSort(data,temp,0,data.length-1); &J@ZF<Ib  
} yWk:u 5  
cCKda3v!O  
private void mergeSort(int[] data, int[] temp, int l, int r) { R#bV/7Ol  
int i, j, k; B=/=U7T  
int mid = (l + r) / 2; &>4$ [m>n  
if (l == r) 9U1!"/F  
return; g#3x)97Z  
if ((mid - l) >= THRESHOLD) |wn LxI  
mergeSort(data, temp, l, mid); F7Yuky  
else e14 Q\  
insertSort(data, l, mid - l + 1); I}0 -  
if ((r - mid) > THRESHOLD) I,?LZ_pK  
mergeSort(data, temp, mid + 1, r); 5P2FNUKL  
else 4qR Q,g{$T  
insertSort(data, mid + 1, r - mid); ]b=A/*z  
Yy~Dg  
for (i = l; i <= mid; i++) { G%/cV?18  
temp = data; Y k6WSurw  
} RXvcy<  
for (j = 1; j <= r - mid; j++) { H$iMP.AK  
temp[r - j + 1] = data[j + mid]; \/%Q PE8  
} WW@"75t  
int a = temp[l]; N5]68Fu'({  
int b = temp[r]; HY#("=9< h  
for (i = l, j = r, k = l; k <= r; k++) { 8(K~QvE~  
if (a < b) { a2)*tbM 9\  
data[k] = temp[i++]; >'g60R[  
a = temp; ATewdq[C  
} else { m{Xf_rQ w  
data[k] = temp[j--]; 5d;K.O  
b = temp[j]; 4[j) $!l`  
} w8Vzx8  
} md_s2d  
} \aRB   
;G&O"S><]c  
/** ~i {)J  
* @param data TU6EE  
* @param l ~a)2 0  
* @param i r|$g((g  
*/ "d*  
private void insertSort(int[] data, int start, int len) { tXGcwoOB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); > _) a7%  
} \05C'z3]  
} KA[Su0  
} ~z"->.u  
} x6P^IkL:  
2!`Z3>Oa  
堆排序: A[Xw|9  
!LESRh?  
package org.rut.util.algorithm.support; ~$ Yuxo  
 F<1'M#bl  
import org.rut.util.algorithm.SortUtil; Ho9*y3]  
~_6rD`2cJ  
/** y!Eh /KD  
* @author treeroot bJvRQrj*3  
* @since 2006-2-2 cZi&L p  
* @version 1.0 artS*fv3r  
*/ N4FG_  N  
public class HeapSort implements SortUtil.Sort{ 'a9.JS[pj  
u(qpdG||7  
/* (non-Javadoc) Y*Rqgpu $  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hD=D5LYAZ  
*/ 8 F 1ga15  
public void sort(int[] data) { !"">'}E1  
MaxHeap h=new MaxHeap(); #`EMK   
h.init(data); P|4a}SWU  
for(int i=0;i h.remove(); 3*L,48wX  
System.arraycopy(h.queue,1,data,0,data.length); 'c]&{-w<i  
} z#ET-[ I  
/;J;,G`?  
private static class MaxHeap{ V!4E(sX  
Oms`i&}"}  
void init(int[] data){ ~'Hwszp b  
this.queue=new int[data.length+1]; -rrg?4  
for(int i=0;i queue[++size]=data; gNBI?xs`p  
fixUp(size); r4'Pf|`u  
} T~d';P  
} Z%{2/mQ  
e hGC N=  
private int size=0; : DP{YL|x  
QX/`s3N  
private int[] queue; Y"U&3e,  
L.(k8eX  
public int get() { Z$gY}Bz  
return queue[1]; P#]jPW  
} AUd}) UR  
=^{+h>#s@  
public void remove() { {M5IJt"{4b  
SortUtil.swap(queue,1,size--); -. G0k*[d  
fixDown(1); (["u"m%  
} uhLW/?q.  
file://fixdown g [K8G  
private void fixDown(int k) { EJsb{$u  
int j; 3H2'HO  
while ((j = k << 1) <= size) { NiF*h~ q  
if (j < size %26amp;%26amp; queue[j] j++; n ~)%ou  
if (queue[k]>queue[j]) file://不用交换 A1@a:P=  
break; C.Yz<?;S  
SortUtil.swap(queue,j,k); 0 $r{h}[^c  
k = j; 5VS<I\o}  
} UbXz`i  
} xC]/i(+bA  
private void fixUp(int k) { aeIR}'H|  
while (k > 1) { g>{=R|uO5  
int j = k >> 1; +-i@R%  
if (queue[j]>queue[k]) s4\2lBU?  
break; q}lSnWY[[  
SortUtil.swap(queue,j,k); HvU)GJ u b  
k = j; yCVBG  
} /6fsh7 \  
} hvwr!(|W  
)XWL'':bF  
} N[%IrN3  
z%z$'m  
} +xa2e?A%L  
YrX{,YtiX  
SortUtil: G5Nub9_*X  
_;9)^})$  
package org.rut.util.algorithm; ~drNlt9jf  
W3#L!&z_wK  
import org.rut.util.algorithm.support.BubbleSort; 5Dd;?T>  
import org.rut.util.algorithm.support.HeapSort; 6\L,L &  
import org.rut.util.algorithm.support.ImprovedMergeSort; VEk|lX;2  
import org.rut.util.algorithm.support.ImprovedQuickSort; .)Q'j94Q  
import org.rut.util.algorithm.support.InsertSort; >jIc/yEYKI  
import org.rut.util.algorithm.support.MergeSort; e~1??k.;=  
import org.rut.util.algorithm.support.QuickSort; }OZfsYPz}T  
import org.rut.util.algorithm.support.SelectionSort; d p].FS  
import org.rut.util.algorithm.support.ShellSort; qp8;=Nfa  
x :s-\>RcA  
/** 3zkq'lZ  
* @author treeroot d4U_Wu&  
* @since 2006-2-2 aE}u5L$#  
* @version 1.0 {Ffr l(*  
*/ bk 2vce&  
public class SortUtil { \_oHuw  
public final static int INSERT = 1; YR>xh2< 9  
public final static int BUBBLE = 2; fQ@["b   
public final static int SELECTION = 3; 8w4.|h5FP  
public final static int SHELL = 4; 9 (Z)c  
public final static int QUICK = 5; QGa"HG5NF  
public final static int IMPROVED_QUICK = 6; -3C~}~$>`  
public final static int MERGE = 7; . Hw^Nx  
public final static int IMPROVED_MERGE = 8; H Zc;.jJ  
public final static int HEAP = 9; iD9GAe}x  
kE1u-EA  
public static void sort(int[] data) { R~o?X ^^O  
sort(data, IMPROVED_QUICK); qohUxtnTK>  
} ay2.C BF  
private static String[] name={ pAYuOk9n  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {chl+au*l  
}; g~]FI  
W/+0gh7`,(  
private static Sort[] impl=new Sort[]{ }5|uA/B  
new InsertSort(), EJZ2V>\_-0  
new BubbleSort(), Ec|#i  
new SelectionSort(), 0< !BzG  
new ShellSort(), fa)G$Q  
new QuickSort(), N gr7E  
new ImprovedQuickSort(), D<:9pLD(  
new MergeSort(), >:.Bn8-  
new ImprovedMergeSort(), `R\0g\  
new HeapSort() :?zOLw?(  
}; 1*s Lj#  
@d)6LA9Ec  
public static String toString(int algorithm){ q;U[f6JjE  
return name[algorithm-1];  I2b[  
} &WIPz\  
!GO4cbdQ  
public static void sort(int[] data, int algorithm) { N?aU<-Tn  
impl[algorithm-1].sort(data); #qzozQ4  
} giv cq'L  
3 ;&N3:,X  
public static interface Sort { p AD@oPC  
public void sort(int[] data); crUXpD  
} dS-l2 $n  
2Tp.S3  
public static void swap(int[] data, int i, int j) { :`d& |BB  
int temp = data; +=*ZH `qX  
data = data[j]; F2#^5s(  
data[j] = temp; (RQ kwu/  
} V\A?1   
} H}d&>!\}F  
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