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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。 D;[%*q*  
插入排序: 1\nzfxx  
O`T_'.Lk  
package org.rut.util.algorithm.support; ^fmuBe}d{  
c/V0AKkS 8  
import org.rut.util.algorithm.SortUtil; Rln\  
/** syCT)}T6z  
* @author treeroot Rw hKW?r+  
* @since 2006-2-2 dVZ~n4  
* @version 1.0 KyBtt47\  
*/ 8Wgzca Q*  
public class InsertSort implements SortUtil.Sort{ /T+%q#4  
uvJ&qd8M  
/* (non-Javadoc) dA<_`GFR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $-]I?cWlQ  
*/ 00@F?|-j  
public void sort(int[] data) { =sF4H_B  
int temp; r_kaS als  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f,ZJFb98  
} .o]9 HbIk5  
} 6C\WX(@4  
} A (H2Gt D  
(-`PO]e48  
} =`UFg >-  
}aQ*1Vcj  
冒泡排序: [Y j: H  
*Ea)b -  
package org.rut.util.algorithm.support; AQ,"):ofvT  
}<&?t;  
import org.rut.util.algorithm.SortUtil; Wevd6)\  
&h_Y?5kK  
/** t+\<i8  
* @author treeroot }pGjc_:']  
* @since 2006-2-2 >pe!T aBN  
* @version 1.0 n)\(\V7  
*/ EAy@kzY?  
public class BubbleSort implements SortUtil.Sort{ l dp$jrNLr  
t<`d*M2w  
/* (non-Javadoc) F{c8{?:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M^Tm{`O!  
*/ ;aD?BD__Z  
public void sort(int[] data) { .{|SKhXk  
int temp; *\cU}qjk  
for(int i=0;i for(int j=data.length-1;j>i;j--){ /U-+ClZi@  
if(data[j] SortUtil.swap(data,j,j-1); Cq'{ %  
} HTMg{_r(%  
} 7P]i|Q{  
} bZ^'_OOn  
} Rt5pl,Nf  
v6Wz:|G/u  
} 'K01"`#  
lJ,\^\q  
选择排序: 8kvA^r`  
>V4r '9I  
package org.rut.util.algorithm.support; ?*ZQ:jH  
:))&"GY  
import org.rut.util.algorithm.SortUtil; 1Zi` \N4T  
Y0J:c?,  
/** +SW|/oIU  
* @author treeroot G~ LQM  
* @since 2006-2-2 /a)^)  
* @version 1.0 N(3Bzd)   
*/ kDxI7$]E  
public class SelectionSort implements SortUtil.Sort { EBiLe;=X  
Z  
/* O+/{[9s  
* (non-Javadoc) Zj_2B_|WN#  
* L,ax^]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  wG6Oz2(  
*/ pred{HEye  
public void sort(int[] data) { h:sf?X[  
int temp; Db;>MWt+e  
for (int i = 0; i < data.length; i++) { '-Oh$hqCx|  
int lowIndex = i; U#Iwe=  
for (int j = data.length - 1; j > i; j--) { ov daK"q2  
if (data[j] < data[lowIndex]) { dBS_N/  
lowIndex = j; ~*]7f%L-  
} G9GHBwT  
} 06Q9X!xD  
SortUtil.swap(data,i,lowIndex); s^4wn:*$zd  
} `^ a:1^  
} teC/Uf 5  
fEiNHVx  
} uH,/S4?X  
R(,m!  
Shell排序: 4'`H H  
(`4&Y-  
package org.rut.util.algorithm.support; L3'isaz&^  
xg8R>j  
import org.rut.util.algorithm.SortUtil; :RwURv+kT  
hwQ|'^(@O  
/** 94|ZY}8|f  
* @author treeroot W]_a_5  
* @since 2006-2-2 H K J^6|'  
* @version 1.0 l*huKSX}  
*/ eVB43]g  
public class ShellSort implements SortUtil.Sort{ }2:q#}"  
dLeos9M:  
/* (non-Javadoc) y7+n*|H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D:?"Rf{)  
*/ !%DE(E*'(  
public void sort(int[] data) { _n{_\/A6f  
for(int i=data.length/2;i>2;i/=2){ UEt78eN  
for(int j=0;j insertSort(data,j,i); -#R`n'/  
} ?L H[,8z  
} cfRUVe  
insertSort(data,0,1); ^:mKTiA-  
} %M/L/_d  
<|]i3_Z  
/** ld):Am}/o  
* @param data EwgNd Gcj  
* @param j Cbl>eKw  
* @param i p GF;,h>  
*/ }_}    
private void insertSort(int[] data, int start, int inc) { bj0<A  
int temp; Ciz,1IV  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ShvC4Xb 0  
} o|c&$)m  
} ?<Hgq8J  
} jC$~m#F  
O '`|(L  
} %++S;#)~  
}NRt:JC  
快速排序: qs= i+  
gg8)oc+w  
package org.rut.util.algorithm.support; y4aT-^C'  
%e)vl[:}  
import org.rut.util.algorithm.SortUtil; x\yr~$}(J  
;]=@;? 9  
/** JUXBMYFus  
* @author treeroot !0|&f>y  
* @since 2006-2-2 :#_k`{WG  
* @version 1.0 .6y*Z+Zg  
*/ rj4Mq:pJ  
public class QuickSort implements SortUtil.Sort{ 6W3."};  
m=/HUt3(&0  
/* (non-Javadoc) xDSiTp=)O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #pPR>,4  
*/ fA0wQz]u  
public void sort(int[] data) { $G9E=wn  
quickSort(data,0,data.length-1); d{) =E8wE  
} T+rym8.p  
private void quickSort(int[] data,int i,int j){ wV{j CQ  
int pivotIndex=(i+j)/2; <:N$ $n  
file://swap )8n?.keq  
SortUtil.swap(data,pivotIndex,j); w40*vBz  
B|+% ExT7  
int k=partition(data,i-1,j,data[j]); yd'cLZd<}  
SortUtil.swap(data,k,j); B# .xs>{N  
if((k-i)>1) quickSort(data,i,k-1); H4{7,n  
if((j-k)>1) quickSort(data,k+1,j); <7B;_3/  
/R?*i@rvf  
} G&MO(r}B  
/** Z![#Uz.z  
* @param data 3-n&&<  
* @param i \ $t{K  
* @param j NwQ$gDgu t  
* @return 3UZ_1nY  
*/ CDW| cr{  
private int partition(int[] data, int l, int r,int pivot) { bNtOqhi  
do{ PJe \PGh  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6W7,EIf  
SortUtil.swap(data,l,r); :0Y.${h  
} d(9SkXr  
while(l SortUtil.swap(data,l,r); 'd;aAG  
return l; )cZ KB0*+  
} .>PwbZ  
jv1p'qs4  
} Z/v )^VR  
*/TO $ ^s  
改进后的快速排序: Ae2Y\sAV  
<S;YNHLC  
package org.rut.util.algorithm.support; XRyeEwA;pp  
m9jjKu]|  
import org.rut.util.algorithm.SortUtil; ;i+(Q%LO  
`Pwf?_2n-  
/** 2)n%rvCQ  
* @author treeroot XuZgyt"=r  
* @since 2006-2-2 >s,*=a  
* @version 1.0 Pl#u ,Y  
*/ L=s8em]7l  
public class ImprovedQuickSort implements SortUtil.Sort { (5[#?_~  
36.mf_AM  
private static int MAX_STACK_SIZE=4096; 6(1 &6|o3  
private static int THRESHOLD=10; S_VzmCi  
/* (non-Javadoc) -~lrv#5Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KpS=oFX{}  
*/ YxA nh  
public void sort(int[] data) { R_Bf JD.  
int[] stack=new int[MAX_STACK_SIZE]; =FFs8&PKys  
o$*DFvk  
int top=-1; ^BI&-bR@  
int pivot; 9+5F(pd(  
int pivotIndex,l,r; c]z^(:_>  
Ml +f3#HP  
stack[++top]=0; OT)`)PZ"  
stack[++top]=data.length-1; =U:]x'g(  
CaoQPb*  
while(top>0){ &;Go CU Le  
int j=stack[top--]; ]Rp<64I o  
int i=stack[top--]; v{\~>1J{  
|ZCv>8?n  
pivotIndex=(i+j)/2; P5"B7>L:  
pivot=data[pivotIndex]; #}Ays#wA>?  
OU mZ|  
SortUtil.swap(data,pivotIndex,j); Tilr%D(Q  
i@<w"yNd_  
file://partition (m.jC}J  
l=i-1; y%YP  
r=j; (KfdN'vW  
do{ H-X5A\\5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); WFqOVI*l  
SortUtil.swap(data,l,r); A7|x|mW  
} v57Kr ,  
while(l SortUtil.swap(data,l,r); do%.KIk  
SortUtil.swap(data,l,j); 6skd>v UU  
eMH\]A~v"  
if((l-i)>THRESHOLD){ *\Hut'7 d  
stack[++top]=i; )%!X,  
stack[++top]=l-1; yG>sBc  
} $ WWi2cI;  
if((j-l)>THRESHOLD){ n4ti{-^4|d  
stack[++top]=l+1; ~i}/  
stack[++top]=j; =)]RD%Oq  
} 91#n Aj%  
#e9XU:9 @g  
} T(~^X-k  
file://new InsertSort().sort(data); xz,M>Ua  
insertSort(data); dsb z\w3:  
} a<V Mh79*  
/** 52.hJNq#L  
* @param data \}Pr!tk!  
*/ )9!ZkZbv_m  
private void insertSort(int[] data) { a$6pA@7}  
int temp; E 6!V0D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z \ -  
} _ g"su #  
} b|`  
} OQT i$2  
(fO~nN{F  
} $>%zNq-F  
6(HJYa  
归并排序: L+)mZb&  
qZSW5lC0  
package org.rut.util.algorithm.support; x/92],.Mz  
9AQ2FD  
import org.rut.util.algorithm.SortUtil; Aq/wa6^%  
WS$~o*Z8  
/** m(WVxVB  
* @author treeroot =E8Kacu%  
* @since 2006-2-2 Zt4 r_ 7  
* @version 1.0 z &[[4[  
*/ #8bI4J{dE  
public class MergeSort implements SortUtil.Sort{ GuJIN"P]  
.q$/#hN:e  
/* (non-Javadoc) ]6HnK%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) + V-&?E(  
*/  HYg7B  
public void sort(int[] data) { i{>YQ  
int[] temp=new int[data.length]; Je` w/Hl/U  
mergeSort(data,temp,0,data.length-1); 0+S'i82=M  
} }HZ'i;~r|9  
KhbbGdmfS$  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;{cl*EN  
int mid=(l+r)/2; 'zTa]y]a  
if(l==r) return ; 6IM:Xj  
mergeSort(data,temp,l,mid); #Cz:l|\ i  
mergeSort(data,temp,mid+1,r); VH.}}RS%  
for(int i=l;i<=r;i++){ ^EKf_w-v  
temp=data;  N/AP8  
} );x[1*e  
int i1=l; W{;LI WsZ  
int i2=mid+1; d _koF-7  
for(int cur=l;cur<=r;cur++){ fP1fm  
if(i1==mid+1) `3F/7$q_  
data[cur]=temp[i2++]; 9M-/{D^+<  
else if(i2>r) sk`RaDq@;  
data[cur]=temp[i1++]; rB5+~ K@  
else if(temp[i1] data[cur]=temp[i1++]; -QP1Se*#  
else u+e.{Z!  
data[cur]=temp[i2++]; oRCD8b?  
} ~bJ*LM?wOP  
} gJBk&SDgtP  
*yA. D?  
} Bk~M^AK@~  
22m'+3I~Y  
改进后的归并排序: 2E3x=  
G{oM2`c'#8  
package org.rut.util.algorithm.support; p&;,$KDA  
cY*lsBo  
import org.rut.util.algorithm.SortUtil; J7rfHhz  
cV)~%e/  
/** &]/.=J  
* @author treeroot <3Hu(Jx<O  
* @since 2006-2-2 iD9hqiX&  
* @version 1.0 MMUw+jM4  
*/ #Y<b'7yJ  
public class ImprovedMergeSort implements SortUtil.Sort { JTB5#S4W  
}L*cP;m#  
private static final int THRESHOLD = 10; KHXnB  
pG:)u cj  
/* u@zBE? g  
* (non-Javadoc) r7p>`>_Q\  
* zL3'',Ha  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) doaqHri\,  
*/ tt>=Vt '  
public void sort(int[] data) { meV RdQ  
int[] temp=new int[data.length]; _26F[R1><~  
mergeSort(data,temp,0,data.length-1); ktKT=(F&  
} hC =="4 -  
O k~\  
private void mergeSort(int[] data, int[] temp, int l, int r) { zHCz[jlrMq  
int i, j, k; U=bZy,FT$  
int mid = (l + r) / 2; 7e&%R4{b  
if (l == r) v<Ux+-  
return; [t`QV2um  
if ((mid - l) >= THRESHOLD) [VP ~~*b  
mergeSort(data, temp, l, mid);  3^zO G2  
else %@FTg$  
insertSort(data, l, mid - l + 1); VIxcyp0X  
if ((r - mid) > THRESHOLD) bx<7@  
mergeSort(data, temp, mid + 1, r); vd<" G}  
else C zvi':  
insertSort(data, mid + 1, r - mid); 07+Qai-]  
<kmn3w,vi  
for (i = l; i <= mid; i++) { w~g)Dz2G  
temp = data; "L" 6jT  
} ;=6~,k)  
for (j = 1; j <= r - mid; j++) { 3J}bI {3  
temp[r - j + 1] = data[j + mid]; up7]Yy;o=  
} L1k_AC1.M  
int a = temp[l]; <[7.+{qfW  
int b = temp[r]; f"5vpU^5*  
for (i = l, j = r, k = l; k <= r; k++) { [nlW}1)46  
if (a < b) { YX_p3  
data[k] = temp[i++]; X^H)2G>e  
a = temp; Dl%NVi+n  
} else { Pw'3ya8  
data[k] = temp[j--]; `=Hh5;ep  
b = temp[j]; ]n0kO&  
} qIa|sV\w0  
} b/ h,qv  
} S,EXc^A7  
`itaQGLD  
/** 0}k[s+^  
* @param data ig] * Z  
* @param l 7$+n"Cfm  
* @param i 'Uew(o  
*/ (CS"s+y1  
private void insertSort(int[] data, int start, int len) { &""~Pn8  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K.n #;|  
} L{;q^  
} qCn(~:  
} I3D8xl>P\  
} q 4PRc<\^  
hVI $r  
堆排序: Y(ly0U}  
r>sk@[4h  
package org.rut.util.algorithm.support; @!&\Z[",  
\ aQBzEX  
import org.rut.util.algorithm.SortUtil; ]L%qfy4  
Q2iS0#  
/** aHe/MucK  
* @author treeroot lqa.Nj  
* @since 2006-2-2 a-,!K  
* @version 1.0 !-%i" a  
*/ +Cl(:kfYB  
public class HeapSort implements SortUtil.Sort{ 4r`u@  
l2U"4d!o  
/* (non-Javadoc) 1g5%Gr/0$5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'H <?K  
*/ i2A>T/?{  
public void sort(int[] data) { g= k}6"F~  
MaxHeap h=new MaxHeap(); a;D{P`%n  
h.init(data); ~sshhuF  
for(int i=0;i h.remove(); /cUcfe#X  
System.arraycopy(h.queue,1,data,0,data.length); (X@JlAfB  
} mdR:XuRD"t  
|S|0'C*  
private static class MaxHeap{ ~T9%%W[  
R$4&>VBu  
void init(int[] data){ E$; =*0w  
this.queue=new int[data.length+1]; oJbD|m  
for(int i=0;i queue[++size]=data; wIz<Y{HA=  
fixUp(size); .a1WwI  
} P Ig)h-w?  
} _ro^<V$%  
 8Br*  
private int size=0;  ;?1H&  
UP}Y s*  
private int[] queue; <Vm+Lt9  
2?58=i%b  
public int get() { tzJdUZJ  
return queue[1]; \,i9m9;y  
} aG}ju;  
: I28Zi*  
public void remove() { ao#{N=mn  
SortUtil.swap(queue,1,size--); s\,F 6c  
fixDown(1); gEbe6!; q3  
} a H'iW)  
file://fixdown QpwOrxI}  
private void fixDown(int k) { t/LQ|/xo  
int j; fGHYs  
while ((j = k << 1) <= size) { oE[wOq +  
if (j < size %26amp;%26amp; queue[j] j++; j<>E Fd  
if (queue[k]>queue[j]) file://不用交换 #ok1qT9_  
break; A&rk5y;  
SortUtil.swap(queue,j,k); O7 %<(  
k = j; &duWV6Acw  
} XYhN;U}Z  
} at]=SA  
private void fixUp(int k) { >{p&_u.r-  
while (k > 1) { mk8xNpk B  
int j = k >> 1; }&Un8Rg"h  
if (queue[j]>queue[k]) G < Z)y#  
break; bO>q`%&  
SortUtil.swap(queue,j,k); trcG^uV  
k = j; Q{T6t;eH  
} 7T9m@  
} MWl?pG!Y  
[ X]yj  
} IL`X}=L_  
G?CaCleG  
} q,3_)ZOq  
|9T3" _MmJ  
SortUtil: '=K [3%U  
bhDV U(%I6  
package org.rut.util.algorithm; ma[%,u`  
O*xC}$OOn  
import org.rut.util.algorithm.support.BubbleSort; .|iMKRq  
import org.rut.util.algorithm.support.HeapSort; iZ % KHqG  
import org.rut.util.algorithm.support.ImprovedMergeSort; "{1`~pDj?  
import org.rut.util.algorithm.support.ImprovedQuickSort; 8TGO6oY+=  
import org.rut.util.algorithm.support.InsertSort; V TQ V]>|  
import org.rut.util.algorithm.support.MergeSort; UjxEbk5>^  
import org.rut.util.algorithm.support.QuickSort; NFw7g&1;Kp  
import org.rut.util.algorithm.support.SelectionSort; cih@: =Qy  
import org.rut.util.algorithm.support.ShellSort; a~E@scD  
Qn'Do4Le  
/** NC'+-P'y  
* @author treeroot 'NHtCs=F   
* @since 2006-2-2 nXPl\|pXt  
* @version 1.0 IV*@}~BJ  
*/ nf=*KS\v  
public class SortUtil { 9o5W\.A7[D  
public final static int INSERT = 1; %Z9&zmO  
public final static int BUBBLE = 2; .'N:]G@!  
public final static int SELECTION = 3; =lY6v -MBw  
public final static int SHELL = 4; BH6)`0&2*N  
public final static int QUICK = 5; t&}Z~Zp  
public final static int IMPROVED_QUICK = 6; gsFyZ  
public final static int MERGE = 7; Tlc3l}B*Z  
public final static int IMPROVED_MERGE = 8; CZ* #FY  
public final static int HEAP = 9; Agt6G\ n  
&J(+XJM%  
public static void sort(int[] data) { 6/_] |4t  
sort(data, IMPROVED_QUICK); IX@g].)C  
} "~-H]9  
private static String[] name={ QP/%+[E.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6Y?%G>$6  
}; @a-u_|3q  
(1pI#H"f9  
private static Sort[] impl=new Sort[]{ \1|]?ZQ\K  
new InsertSort(), OiBDI3,|+  
new BubbleSort(), x?s5vxAKf  
new SelectionSort(), CR8a)X4j#  
new ShellSort(), .x\fPjB   
new QuickSort(),  +6paM  
new ImprovedQuickSort(), -+MGs]),  
new MergeSort(), dQP7CP  
new ImprovedMergeSort(), }?[^q  
new HeapSort() 74f3a|vx/  
}; 0-Z sV3I&  
)Dn~e#  
public static String toString(int algorithm){ V)x(\ls]SX  
return name[algorithm-1]; qkQ _#  
} E.~;  
a(Q4*XH4  
public static void sort(int[] data, int algorithm) { T.ZPpxY  
impl[algorithm-1].sort(data); ">pW:apl%  
} BCnf'0q  
F>N3GPRl  
public static interface Sort { &G63ReW7 @  
public void sort(int[] data); "s-e)svB  
} <3?T^/8  
Ce&nMgd~  
public static void swap(int[] data, int i, int j) { o=/Cje  
int temp = data; Twqkd8[  
data = data[j]; ! C}t)R]^  
data[j] = temp; Qdepzo>E  
} m ,B,dqT  
} iV+'p->/  
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