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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。 Op)0D:BmR  
插入排序: -t6d`p;dR  
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package org.rut.util.algorithm.support; B@zJ\Ir[  
R[&lk~a{=  
import org.rut.util.algorithm.SortUtil; 4!k={Pd  
/** fe37T@  
* @author treeroot "}SERC7  
* @since 2006-2-2 mZ;yk(  
* @version 1.0 cfeX (0  
*/ +X*`}-3  
public class InsertSort implements SortUtil.Sort{ FYcMvY  
ZVp\ 5V*  
/* (non-Javadoc) 7Xad2wXn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iY|YEi8  
*/ GoEIY  
public void sort(int[] data) { - Ez|  
int temp; f6L_u k`{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zW0AB8l  
} &vMH AZd  
} :LBe{Jbw  
} q<yH!  
(C-z8R Z6  
} WQ5sC[&   
^ Nsl5  
冒泡排序: @5?T]V g  
Q5,@ P?  
package org.rut.util.algorithm.support; )E7A,ZW,  
uCu,'F,6Y  
import org.rut.util.algorithm.SortUtil; 3(5RUI-  
2/7=@>|  
/** %o"Rcw|  
* @author treeroot 9uS7G*  
* @since 2006-2-2  +rT(  
* @version 1.0 }qD.Ek  
*/ _yWH\5@  
public class BubbleSort implements SortUtil.Sort{ Y$ChMf  
R NA03  
/* (non-Javadoc) Q?a"uei[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3,vH:L4  
*/ :):Y6)giBD  
public void sort(int[] data) { /XSPVc<  
int temp; b(SV_.4,'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ #`p>VXBj!  
if(data[j] SortUtil.swap(data,j,j-1); GVl u4  
} r0 X2cc  
} o`77gkLO  
} *}_/:\v  
} @zJI0_Bp  
BL8\p_U  
} 5./ (fgx>  
-ufmpq.  
选择排序: N6J$z\ P  
]JD$fS=_  
package org.rut.util.algorithm.support; R&4E7wrdP  
]~qN<x  
import org.rut.util.algorithm.SortUtil; 6 gKOpa  
z$Nk\9wm  
/** kH&ZPAI  
* @author treeroot 1!f'nS  
* @since 2006-2-2 EORRSP,$2  
* @version 1.0 vfv5ex(  
*/ '.K,EM!-~h  
public class SelectionSort implements SortUtil.Sort { Wl#^Eu\g1W  
{;4PP463  
/* Qi[D&47XO  
* (non-Javadoc) t<|s &  
* .u*].As=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'u3+k.  
*/ ? w?k-v  
public void sort(int[] data) { =+"'=o  
int temp; ;yZ N "r  
for (int i = 0; i < data.length; i++) { +E [bLz^  
int lowIndex = i; *(`.h\+  
for (int j = data.length - 1; j > i; j--) { %f-<ol  
if (data[j] < data[lowIndex]) { $dnHUBB  
lowIndex = j; Nb#7&_f=  
} WsV3>=@f  
} ) ,hj7  
SortUtil.swap(data,i,lowIndex); \Zv =?\  
} ,\M_q">npc  
} v$i%>tQ\  
_B1uE2j9  
} J:lwq@u  
{@#L'i|  
Shell排序: 0l6iv[qu5w  
/K!,^Xn  
package org.rut.util.algorithm.support; Q*C4  q`  
yy } 0_  
import org.rut.util.algorithm.SortUtil; |d5L Ifb(  
-{*V)J_Co  
/** 1!`768  
* @author treeroot /a(zLHyz)  
* @since 2006-2-2 e\_6/j7'  
* @version 1.0 '&QT}B  
*/ X}-H=1T?  
public class ShellSort implements SortUtil.Sort{ )A0&16<  
 7q:bBS  
/* (non-Javadoc) 0tqR wKL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ee_\_"  
*/ Tqa4~|6  
public void sort(int[] data) { 9AYe,R  
for(int i=data.length/2;i>2;i/=2){ @c !67Z  
for(int j=0;j insertSort(data,j,i); 4) 3pa*  
} H ZLOn  
} (d;(FBk='  
insertSort(data,0,1); iy82QNe  
} 3=l-jGJk  
sOxdq"E  
/** t60/f&A#7H  
* @param data +7/*y}.U  
* @param j `Y\/US70{c  
* @param i Hm* vKFhz  
*/ L||yQH7n  
private void insertSort(int[] data, int start, int inc) { LQ@|M.$ A  
int temp; 02^(z6K'&?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qX'a&~s)n  
} :UcS$M1LE  
} OZ;E&IL  
} >1U@NK)HfY  
D:ugP ,  
} otVyuh  
_Af4ct;ng  
快速排序: :3>yr5a7-  
L[G\+   
package org.rut.util.algorithm.support; 5SL>q`t.bd  
pInWKj[y1  
import org.rut.util.algorithm.SortUtil; wmr%h q  
b2=Q~=Wc  
/** +Jka:]MW!  
* @author treeroot px>> ]>ZMH  
* @since 2006-2-2 U9o*6`"o  
* @version 1.0 Hs}"A,V  
*/ ]A]E)*  
public class QuickSort implements SortUtil.Sort{ 8Qz7uPq  
RpK,ixbtA+  
/* (non-Javadoc) 7 3z Y^ x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cNr][AzU@  
*/ {qWG^Db  
public void sort(int[] data) { N^yO- xk  
quickSort(data,0,data.length-1); P>T*:!s;  
} DYKV54\ue  
private void quickSort(int[] data,int i,int j){ ;~:Ryl M  
int pivotIndex=(i+j)/2; , q@(L  
file://swap V=4u7!ha  
SortUtil.swap(data,pivotIndex,j); :iQ^1S` pH  
]t*P5  
int k=partition(data,i-1,j,data[j]); K@ sP~('  
SortUtil.swap(data,k,j); :IT U0%;!+  
if((k-i)>1) quickSort(data,i,k-1); &Y>~^$`J  
if((j-k)>1) quickSort(data,k+1,j); Xf_tj:eO~  
8cBW] \ v  
} ~R?dDL  
/** D@(M+u9/%  
* @param data "p~]m~g  
* @param i FX|lhwmc(  
* @param j Kpp *^  
* @return 8X ?GY8W:  
*/ mf]( 3ZL  
private int partition(int[] data, int l, int r,int pivot) { aC8,Y$>?E`  
do{ n|mJE,N  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?` eYW Z">  
SortUtil.swap(data,l,r); KB,~u*~!  
} \, %o>M'  
while(l SortUtil.swap(data,l,r);  TCKI  
return l; "'}v0*[  
} _czbUl  
J<($L}T*$  
} q:- ]d0B+  
4j@kMe;RjZ  
改进后的快速排序: =wlm  
^Azt.\fMX  
package org.rut.util.algorithm.support; f.$aFOn  
5<)gCHa  
import org.rut.util.algorithm.SortUtil; 17n+4J]  
RlslF9f  
/** C{`^9J-  
* @author treeroot v`_i1h9p{  
* @since 2006-2-2 94h_t@Q/1  
* @version 1.0 *m| t =9E  
*/ p(H)WD  
public class ImprovedQuickSort implements SortUtil.Sort { (ifqwl62  
Wlr&g xZ  
private static int MAX_STACK_SIZE=4096; \2].|Mym  
private static int THRESHOLD=10; aJy>  
/* (non-Javadoc) r(,= uLc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PQU3s$  
*/ /jjW/ lr  
public void sort(int[] data) { #7-kL7 MK]  
int[] stack=new int[MAX_STACK_SIZE]; cXOje"5i  
G.-h=DT]  
int top=-1; z<yNG/M1>U  
int pivot;  4]DAh  
int pivotIndex,l,r; -'O Q-5  
f!M[awj%  
stack[++top]=0; .Ca"$2  
stack[++top]=data.length-1; 5#TrCPi6A  
gqP -E  
while(top>0){ W9&0k+#^  
int j=stack[top--]; 9S:{  
int i=stack[top--]; v+!y;N;Q  
fCt^FU  
pivotIndex=(i+j)/2; /RJ6nmN@}  
pivot=data[pivotIndex]; cX|[WT0[I  
.%x"t>]  
SortUtil.swap(data,pivotIndex,j); ?q d,>  
i\kTm?BQZ  
file://partition F,p`- m[q  
l=i-1; D EUd[  
r=j; wMH[QYb<*  
do{ H4PbO/{xO  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); toS(UM n  
SortUtil.swap(data,l,r); ;Pol#0_(  
} E3 ~,+68U  
while(l SortUtil.swap(data,l,r); N_u&3CG  
SortUtil.swap(data,l,j); Z&+NmOY4  
/v}P)&  
if((l-i)>THRESHOLD){ zuC58B  
stack[++top]=i; <ICZ"F`S  
stack[++top]=l-1; 1A7%0/K-]  
} lv<iJH\  
if((j-l)>THRESHOLD){ .-SDo"K.h  
stack[++top]=l+1; g  ,/a6M  
stack[++top]=j; P &;y] ,)E  
} 'GEBxNH:  
;;EDN45  
} Qqd6.F  
file://new InsertSort().sort(data); pP|,7c5  
insertSort(data); UJee&4C-y  
} 82j'MgGP  
/** (Oxz'#TX  
* @param data A[u)wX^`f^  
*/ Vk MinE  
private void insertSort(int[] data) { l,*yEkU  
int temp; JP{UgcaF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5SoZ$,a<e  
} NoFs-GGGh  
} dO>k5!ge|:  
} 1^Kj8*O8e  
Yw6DJY  
} 6B7<  
1vB-M6(  
归并排序: eq^TA1>T  
$7Jfb<y  
package org.rut.util.algorithm.support; C>*5=p|T  
*ZGX-+{  
import org.rut.util.algorithm.SortUtil; N=OS\pz  
)>(L{y|uYX  
/** gKmX^A5<  
* @author treeroot GE%2/z p  
* @since 2006-2-2 u~" siH  
* @version 1.0 UppBnw  
*/ xj0cgK|!  
public class MergeSort implements SortUtil.Sort{ PV?]UUc'n<  
m!rwG(  
/* (non-Javadoc) F0@Qgk]\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \n[ 392  
*/ ?k [%\jq{a  
public void sort(int[] data) { 3LKB;  
int[] temp=new int[data.length]; CD^CUbGk  
mergeSort(data,temp,0,data.length-1); c]6V"Bo}A  
} %4j&H!y-w;  
;knd7SC   
private void mergeSort(int[] data,int[] temp,int l,int r){ |J:$MX~  
int mid=(l+r)/2; RS'} nY}  
if(l==r) return ; HR;/Br  
mergeSort(data,temp,l,mid); uA~YRKer  
mergeSort(data,temp,mid+1,r); D+f'*|  
for(int i=l;i<=r;i++){ "kX`FaAhY  
temp=data; G7 1U7  
} sa_R$ /H  
int i1=l; u FMIY(vB  
int i2=mid+1; DC&A1I&  
for(int cur=l;cur<=r;cur++){ /@Ez" ?V2  
if(i1==mid+1) >Z *iE"9"  
data[cur]=temp[i2++]; b& V`<'{  
else if(i2>r) yc*<:(p  
data[cur]=temp[i1++]; >B0D/:R9  
else if(temp[i1] data[cur]=temp[i1++]; |Dg;(i?  
else {T&v2u#S  
data[cur]=temp[i2++]; Y5HfN[u^7  
} 5d+<EF+N  
} 4_tR9w"  
Yy]T J  
} :v`o6x8  
K>kLUcC7Z  
改进后的归并排序: _WKJ<dB<  
!/947Rn  
package org.rut.util.algorithm.support; DMB"Y,  
xS"$g9o0  
import org.rut.util.algorithm.SortUtil; 5|{)Z]M%9  
!L77y^oV  
/** z/S,+!|z  
* @author treeroot O7v]p  
* @since 2006-2-2 R8tF/dx>7  
* @version 1.0 .Y!:x =e  
*/ oAY_sg+  
public class ImprovedMergeSort implements SortUtil.Sort { _().t5<  
r:-WzH(Ms  
private static final int THRESHOLD = 10; NH'iR!iGo  
mG_BM/$  
/* GJX4KA8J  
* (non-Javadoc) Y&s2C%jT  
* `|]e6Pb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }'lNi^"XL  
*/ Q!K`e)R  
public void sort(int[] data) { [G a~%m  
int[] temp=new int[data.length]; &eIGF1ws  
mergeSort(data,temp,0,data.length-1); m=QCG)s  
} ,>u=gA&}  
J^fm~P>.  
private void mergeSort(int[] data, int[] temp, int l, int r) { H>?F8R_iq  
int i, j, k; >\Z R*CS  
int mid = (l + r) / 2; k5@d! }#c  
if (l == r) E:FO_R(Xq  
return; 8Y# bN*!  
if ((mid - l) >= THRESHOLD) {rC~ P  
mergeSort(data, temp, l, mid); S8%n.<OB  
else kg3ppt  
insertSort(data, l, mid - l + 1); h~w4, T  
if ((r - mid) > THRESHOLD) |z~LzSJv  
mergeSort(data, temp, mid + 1, r); &3Tx@XhO  
else RlsVC_H\  
insertSort(data, mid + 1, r - mid); 6 mO"  
|) Pi6Y  
for (i = l; i <= mid; i++) { t8& q9$  
temp = data; Jf)3< ~G  
} :tM?%=Q  
for (j = 1; j <= r - mid; j++) { TFy7HX\Oq  
temp[r - j + 1] = data[j + mid]; F6W}mMZH/N  
} Pd~MiyO;K  
int a = temp[l]; 2J<&rKCF  
int b = temp[r]; hmZvIy(  
for (i = l, j = r, k = l; k <= r; k++) { yG&2UqX  
if (a < b) { S$e Dnw~$  
data[k] = temp[i++]; u g\w\b  
a = temp; Kd3QqVJBz1  
} else { :Q_x/+-  
data[k] = temp[j--]; {B0h+. C  
b = temp[j]; JRO$<  
} pUCK-rL  
} ( KTnJZ  
} ioV_oR9I  
<C<`J{X0  
/** iq6a|XGi  
* @param data EA|k5W*b  
* @param l (R'+jWH  
* @param i Fk1.iRVzi  
*/ |;u}sX1t9  
private void insertSort(int[] data, int start, int len) { s-k_d<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z<pJYpxH  
} \cQ .|S  
} R#(G%66   
} 4DLq}v  
} zX kx7d8  
Sdd9Dv?!  
堆排序: ++8_fgM  
lJ{V  
package org.rut.util.algorithm.support; +;q.Y?  
H9` f0(H  
import org.rut.util.algorithm.SortUtil; xd8 *<,Wj  
)ofm_R'q*  
/** #tjmWGo,  
* @author treeroot t`G)b&3_O  
* @since 2006-2-2 :eOR-}p'  
* @version 1.0 nrpI5t.b  
*/ M3pjXc<O  
public class HeapSort implements SortUtil.Sort{ f v LC_'M  
*Msr15  
/* (non-Javadoc) Dag`>|my  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6T+  
*/ GK{{7B  
public void sort(int[] data) { RY=1H  
MaxHeap h=new MaxHeap(); b2 kWjg.4  
h.init(data); 1f4 bt6[  
for(int i=0;i h.remove(); ;/LD)$_  
System.arraycopy(h.queue,1,data,0,data.length); u+D[_yd^  
} x*}bo))hb  
}!)F9r@\  
private static class MaxHeap{ =Q(vni83<  
DjHp+TyT  
void init(int[] data){ 8)xt(~qF  
this.queue=new int[data.length+1]; ~rv})4h  
for(int i=0;i queue[++size]=data; $/_ qE  
fixUp(size); 0a2@b"l  
} cDV ^8 R  
} $h28(K%  
"0&N}  
private int size=0; op7FZHs  
UG2w 1xqHw  
private int[] queue; lBA+zZ  
NY.k.  
public int get() { <]G${y*;  
return queue[1]; t FgX\4  
} n56;m`IU  
I*\^,ow  
public void remove() { ml u 3K  
SortUtil.swap(queue,1,size--); ~ 3T,&?r  
fixDown(1); &L4 q10-N  
} .px:e)iW  
file://fixdown ULBg {e?l8  
private void fixDown(int k) { UQT'6* !  
int j; .q;ED`G  
while ((j = k << 1) <= size) { Hl7:*]l7b  
if (j < size %26amp;%26amp; queue[j] j++; 0ys~2Y!eH  
if (queue[k]>queue[j]) file://不用交换 1 W'F3  
break; >V;,#5F_  
SortUtil.swap(queue,j,k); qv+R:YYOq  
k = j; Bjj<\8 ^M  
} UUtbD&\  
} NZXjE$<Vr  
private void fixUp(int k) { Lz4eh WntO  
while (k > 1) { Bw< rp-  
int j = k >> 1; Z1,gtl ?  
if (queue[j]>queue[k]) Hs0pW5oZ  
break; >q7 %UK]&  
SortUtil.swap(queue,j,k); 68t}w^=  
k = j; j+^L~, S  
} )\ 0F7Z  
} c[cAUsk i  
:q+N&j'3  
} uS5o?fg\e  
j9y3hQ+q  
} ?IYY'fS"  
BW Uq%o,@g  
SortUtil: G'#41>q+  
g9mG`f  
package org.rut.util.algorithm; l]#!+@  
c^.l 2Q!  
import org.rut.util.algorithm.support.BubbleSort; 8i 0  
import org.rut.util.algorithm.support.HeapSort; Y=B3q8l5  
import org.rut.util.algorithm.support.ImprovedMergeSort; yA7 )Y})>  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5lmO:G1  
import org.rut.util.algorithm.support.InsertSort; g-)mav  
import org.rut.util.algorithm.support.MergeSort; cT'w=  
import org.rut.util.algorithm.support.QuickSort; fCUT[d+H  
import org.rut.util.algorithm.support.SelectionSort; [Ot,q/hBJ  
import org.rut.util.algorithm.support.ShellSort; 3]LN;s]ac  
JW+*d`8Z[  
/** (> "QVxr  
* @author treeroot ^toAw8A=@0  
* @since 2006-2-2 JMyTwj[7  
* @version 1.0 f3PMVf:<  
*/ z&+ zl6  
public class SortUtil { d;G~hVu  
public final static int INSERT = 1; m( 47s  
public final static int BUBBLE = 2; 3h=8"lRc  
public final static int SELECTION = 3; "pvZ,l>8f  
public final static int SHELL = 4; mLwY]2T"  
public final static int QUICK = 5; $H2GbZ-I  
public final static int IMPROVED_QUICK = 6; @}LZ! y  
public final static int MERGE = 7; KL3<Iz]  
public final static int IMPROVED_MERGE = 8; ]]uHM}l  
public final static int HEAP = 9; l";'6;g  
L-h$Z0]_F  
public static void sort(int[] data) { &Cro2|KZhG  
sort(data, IMPROVED_QUICK); zg}YGu|J  
} 1'KishHK=  
private static String[] name={ YUkud2,j  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?y7w}W  
}; 3<(q }  
>Hwc,j q  
private static Sort[] impl=new Sort[]{ LtKB v 4  
new InsertSort(), @h?crJ6$  
new BubbleSort(), &a)vdlZSE=  
new SelectionSort(), kU*{4G|6  
new ShellSort(), 0Xl%uF+w  
new QuickSort(), \cySWP[  
new ImprovedQuickSort(), 'fW#7W  
new MergeSort(), Ka-p& Uv1<  
new ImprovedMergeSort(), `~F5 wh~  
new HeapSort() lF4u{B9DM  
};  i g71/'D  
X>l*v\F9  
public static String toString(int algorithm){ G*n2Ii  
return name[algorithm-1]; j$@tK0P  
} `rFAZcEj%  
mP}#Ccji?  
public static void sort(int[] data, int algorithm) { ;5S}~+j  
impl[algorithm-1].sort(data); %%}A|,  
} ^gR+S  
]qktj=p  
public static interface Sort { l\Ftr_Dk  
public void sort(int[] data); =!.m GW-Q}  
} (Wj2?k/]  
-G`.y?  
public static void swap(int[] data, int i, int j) { n9UKcN-  
int temp = data; $& {IKP)u  
data = data[j]; X"*^l_9-v  
data[j] = temp; 8<&EvOk  
} 2[R$RpA_  
} 3#GqmhqKDk  
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