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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。 'U<-w$!f+^  
插入排序: ~8'4/wh+8  
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package org.rut.util.algorithm.support; XAuB.)|  
]Xcqf9k  
import org.rut.util.algorithm.SortUtil; <Sn5ME<*  
/** EZkg0FhkZ  
* @author treeroot zGFo -C  
* @since 2006-2-2 4kO[|~#  
* @version 1.0 ]}Hcb)'j@  
*/ >'#G$f  
public class InsertSort implements SortUtil.Sort{ Y7R"~IA$  
DKL< "#.7  
/* (non-Javadoc) V.;,1%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Ia3bV W  
*/ (80#{4kl  
public void sort(int[] data) { _H|c _  
int temp; ToIvyeFr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rkA0v-N6v  
} 6L~@jg~0A[  
} WSfla~-'F  
} #3maT*JY  
5J1A|qII  
} }~dXz?{p8  
E"iH$NN  
冒泡排序: BDY@&vF  
le`&VdE^  
package org.rut.util.algorithm.support; ^\ &:'$f+8  
yG58?5\9  
import org.rut.util.algorithm.SortUtil; B?c9cS5Mj  
[w l:"rm  
/** :qy`!QPUm  
* @author treeroot C,C%1  
* @since 2006-2-2 UwY<3ul  
* @version 1.0 1QM*oj:  
*/ cH6ie?KvAo  
public class BubbleSort implements SortUtil.Sort{ 5=Mm=HyI2  
!mK[kXo  
/* (non-Javadoc) 4*OL^ \%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iC&=-$vu  
*/ DR/qe0D  
public void sort(int[] data) { 1(M0C[P  
int temp; -yeQQ4b  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (r`+q[  
if(data[j] SortUtil.swap(data,j,j-1); m}0US;c#f  
} I.tJ4  
} 8 f%@:}H  
} c\UVMyE  
} |x["fWK  
]CH@ T9d5V  
} /ee:GjUkB  
noe1*2*TE  
选择排序: W^0F(9~!(  
r9@O`i  
package org.rut.util.algorithm.support; @``kt*+K+  
c&)H   
import org.rut.util.algorithm.SortUtil; Y5=~>*e  
0IBVR,q  
/** JU:!lyd  
* @author treeroot PC/fb-J  
* @since 2006-2-2 ];6c/#2x  
* @version 1.0 g}IdU;X$NT  
*/ ^G= wRtS  
public class SelectionSort implements SortUtil.Sort { y#HD1SZ  
C=@BkneQ  
/* R B.j@*  
* (non-Javadoc) _`/0/69  
* [e3|yE6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L@S"c (  
*/ Rp A76ug  
public void sort(int[] data) { 93 x.b]] "  
int temp; [{N i94:d  
for (int i = 0; i < data.length; i++) {  ?1r@r  
int lowIndex = i; 7GfgW02  
for (int j = data.length - 1; j > i; j--) {  wxsJB2  
if (data[j] < data[lowIndex]) { COFs?L.`  
lowIndex = j; ]l+Bg;F#V  
} \l{*1lQ`  
} mW1Sd#0  
SortUtil.swap(data,i,lowIndex); p\:_E+lsU  
} "*laY<E  
} 8_>\A= E  
:84ja>`c  
} hiaj!&+Q  
<,Sy:>:"  
Shell排序: 3`TC*  
V-A^9AAPm  
package org.rut.util.algorithm.support; qh0)~JL4   
&o^wgmS   
import org.rut.util.algorithm.SortUtil; dpZ7eJ   
sxgR;gf6  
/** _XXK1H x  
* @author treeroot yr&oJYM  
* @since 2006-2-2 YC&iH>jO3  
* @version 1.0 ~D@ V@sX  
*/ % %c0UaV  
public class ShellSort implements SortUtil.Sort{ kBIF[.v(\  
0o At=S  
/* (non-Javadoc) !/< 5.9!9r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5|m|R"I*Y  
*/ KwPJ0 ]('_  
public void sort(int[] data) { ; VK;_d  
for(int i=data.length/2;i>2;i/=2){ Z/q%%(fh 0  
for(int j=0;j insertSort(data,j,i); >1pD'UZIy7  
} cLr? B;FS  
} B_hob  
insertSort(data,0,1); BGOI$,  
} Rt7}e09HV  
X]cB `?vR  
/** }Bc'(2A;,  
* @param data ol!o8M%Q  
* @param j <B`}18x  
* @param i "x\3`Qk  
*/ lx$Y-Tb^F  
private void insertSort(int[] data, int start, int inc) { gK(E0p"  
int temp; g ywI@QD%#  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *Q!b%DIa$  
} r{\cm Ds  
} [.6>%G1C  
} kjNA~{  
OOl{  
} Da-F(^E  
IL.Jx:(0  
快速排序: Redp'rXT<h  
a:zx&DwM  
package org.rut.util.algorithm.support; (ZShhy8g  
pal))e! B  
import org.rut.util.algorithm.SortUtil; 4Xz6JJ1U[H  
1"/V?ArfL  
/** + A0@# :B  
* @author treeroot KG>.7xVWV7  
* @since 2006-2-2 + W@r p#  
* @version 1.0 Z6D4VZVF  
*/ <g*rTqT'  
public class QuickSort implements SortUtil.Sort{ M|n)LyL  
?b#?Vz  
/* (non-Javadoc) 7IK<9i4O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ++&F5'?g  
*/ $)n{}8^  
public void sort(int[] data) { ]2h[.qa  
quickSort(data,0,data.length-1); Hkg@M?(  
} n:wn(BC3  
private void quickSort(int[] data,int i,int j){ #H!~:Xu   
int pivotIndex=(i+j)/2; J3:P/n&  
file://swap jQb=N%5s  
SortUtil.swap(data,pivotIndex,j); GK&yP%Z3  
So`xd *C!  
int k=partition(data,i-1,j,data[j]); +D h=D*  
SortUtil.swap(data,k,j); 2CmeO&(Qf*  
if((k-i)>1) quickSort(data,i,k-1); < ht >>  
if((j-k)>1) quickSort(data,k+1,j); WZm^:,  
5@0c@Q  
} uFok'3!g7%  
/** HhqqJEp0  
* @param data DVB:8"Bu  
* @param i dtF6IdAf  
* @param j @%#(Hse  
* @return dH`a|SVW9  
*/ c'G\AbUVjE  
private int partition(int[] data, int l, int r,int pivot) { +vU.#C_2  
do{ -g@pJ^>:  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +uT=Wb \  
SortUtil.swap(data,l,r); W/\7m\ B  
} Ix(4<s  
while(l SortUtil.swap(data,l,r); dHp6G^Y  
return l; k&~vVx  
} s &.Z;X  
4k#B5^iJ  
} %1=W#jz  
ux =a9  
改进后的快速排序: yBl<E$=  
[;?^DAnK2  
package org.rut.util.algorithm.support; I7uYsjh@u  
61mQJHl.  
import org.rut.util.algorithm.SortUtil; N$y4>g  
 >#q|Pjv]  
/** vaQ,l6z .h  
* @author treeroot wZC'BLD  
* @since 2006-2-2 ~f@<]  
* @version 1.0 &>s(f-\8  
*/ AoR`/tr,  
public class ImprovedQuickSort implements SortUtil.Sort { }2\"(_  
plf<O5'  
private static int MAX_STACK_SIZE=4096; JHQ8o5bEQp  
private static int THRESHOLD=10; 4;*V^\',9  
/* (non-Javadoc) mD=?C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `3+U6>U [  
*/ :w];N|48s  
public void sort(int[] data) { kqyMrZ#  
int[] stack=new int[MAX_STACK_SIZE]; fk"{G>&8  
p0tv@8C>  
int top=-1; {$EXI]f  
int pivot; JNu- z:J  
int pivotIndex,l,r; S1B/ClKWq  
=.o-R=:d  
stack[++top]=0; c3}}cFe  
stack[++top]=data.length-1; w1}[lq@  
)R|7> 97  
while(top>0){ a>kD G <.A  
int j=stack[top--]; -0]aOT--  
int i=stack[top--]; NRl"!FSD;"  
o}%fs *  
pivotIndex=(i+j)/2; `j(+Y  
pivot=data[pivotIndex]; T2->  
asF- mf;D  
SortUtil.swap(data,pivotIndex,j); <G&v  
869`jA &7"  
file://partition e7qT;  
l=i-1; t/$xzsoJZr  
r=j; iY($O/G[+  
do{ (]V.#JM  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); h49Q2`  
SortUtil.swap(data,l,r); ]SPB c  
} nY8UJy}<oL  
while(l SortUtil.swap(data,l,r); q-RGplx  
SortUtil.swap(data,l,j); |4c==7.  
OP&[5X+Y  
if((l-i)>THRESHOLD){ kzmt'/L8  
stack[++top]=i; [yyV`&  
stack[++top]=l-1; U=t'>;(g  
} roA1= G\Q  
if((j-l)>THRESHOLD){ .( J /*H  
stack[++top]=l+1; 4tC_W!?$t  
stack[++top]=j; w\mF2h  
} N<{ `n;  
};j&)M  
} 9s!/yiP5  
file://new InsertSort().sort(data); 4sAshrUf  
insertSort(data); |-mazvA  
} ' EDi6  
/** Jt)~h,68  
* @param data 5_`}$"<~  
*/ bPOx~ CMh  
private void insertSort(int[] data) { K+}Z6_:  
int temp; (LfVa`<1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7X|r';"?i  
} WAa?$"U2  
}  n=&c5!  
} 5;{Bdvcv  
zb" hy"hKw  
} _R<HC  
K$.zO4  
归并排序: moR]{2Cd{  
m=9 N^_  
package org.rut.util.algorithm.support; H6I #Xj  
}"-r;i  
import org.rut.util.algorithm.SortUtil; |rvrSab)  
#SYWAcTkO}  
/** M BT-L  
* @author treeroot =l(JJ  
* @since 2006-2-2 2{CSH_"Z7  
* @version 1.0 R]Oy4U,f  
*/ nADd,|xD3  
public class MergeSort implements SortUtil.Sort{ /ZDc=>)~  
5\S7Va;W  
/* (non-Javadoc) sV<4^n7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mig3.is  
*/ X W)A~wPBs  
public void sort(int[] data) { =5`@:!t7  
int[] temp=new int[data.length]; /)1-^ju  
mergeSort(data,temp,0,data.length-1); dO[4}FZ$  
} gp)ds^  
_p&$X  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;N\?]{ L  
int mid=(l+r)/2; S:YL<_oI|  
if(l==r) return ; j 7 URg>i0  
mergeSort(data,temp,l,mid); q?L(V+X  
mergeSort(data,temp,mid+1,r); _);Kb/  
for(int i=l;i<=r;i++){  ?~.&Y  
temp=data; Elp!,(+&6  
} BcLt95;.\  
int i1=l; 5B 7*Z  
int i2=mid+1; ^W D$ gd  
for(int cur=l;cur<=r;cur++){ @>5<m'}2  
if(i1==mid+1) }^[@m#  
data[cur]=temp[i2++]; 1VFqT'  
else if(i2>r) pCc7T-"og  
data[cur]=temp[i1++]; %B*dj9n^q  
else if(temp[i1] data[cur]=temp[i1++]; .Qt3!ek  
else gN(hv.nQ  
data[cur]=temp[i2++]; <gLtX[v!CL  
} 05B+WJ1  
} C8:"+;  
YZRB4T9  
} wF8\  
6ZpcT&yL  
改进后的归并排序: )|R9mW=k9P  
 ~C/KA6H  
package org.rut.util.algorithm.support; F5+_p@ !i  
gi'agB^  
import org.rut.util.algorithm.SortUtil; A#S:_d  
Qiw4'xQm  
/** t5X lR]` w  
* @author treeroot ]?(F'&  
* @since 2006-2-2 f9UaAdJ(  
* @version 1.0 "5:f{GfO#v  
*/ )V3(nZY  
public class ImprovedMergeSort implements SortUtil.Sort { A.9'pi'[9Q  
=jc8=h[F<  
private static final int THRESHOLD = 10; V1)P=?%(US  
U!:!]DX(  
/* oxQID  
* (non-Javadoc) %:KV2GP  
* vQ mackY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Us,[x Q  
*/ JjLyV`DJ  
public void sort(int[] data) { > x ghq  
int[] temp=new int[data.length]; "jO3Y/>S  
mergeSort(data,temp,0,data.length-1); @O}j:b  
} sLdUrD%  
`l2<  
private void mergeSort(int[] data, int[] temp, int l, int r) { Sn2Ds)Pfx3  
int i, j, k; qMES<UL>  
int mid = (l + r) / 2; gH^$Y~Lx  
if (l == r) xeM':hD.o  
return; IXvz&4VD  
if ((mid - l) >= THRESHOLD) |4. o$*0Y  
mergeSort(data, temp, l, mid); ' P`p.5nH  
else KV}U{s+U8  
insertSort(data, l, mid - l + 1); 19 wqDIE0  
if ((r - mid) > THRESHOLD) <ytKf<a%e  
mergeSort(data, temp, mid + 1, r); nX\]i~  
else ;[%}Xx  
insertSort(data, mid + 1, r - mid); }u_EXP8M  
Pgw%SMEp  
for (i = l; i <= mid; i++) { RyOT[J  
temp = data; b2X'AHK S  
} P^3m:bE]  
for (j = 1; j <= r - mid; j++) { \1mM5r~  
temp[r - j + 1] = data[j + mid]; ~Oq,[,W  
} &U$8zn~[k  
int a = temp[l]; 0IgnpeA]  
int b = temp[r]; } ndvV~*1  
for (i = l, j = r, k = l; k <= r; k++) { K= Z]#bm  
if (a < b) { 0*Km}?;0-  
data[k] = temp[i++]; `bZU&A(`Be  
a = temp; E)Qh]:<2v  
} else { PR@4' r|a  
data[k] = temp[j--]; 7s8<FyFsjd  
b = temp[j]; R #3Q$   
} m>+,^`0  
} w$lfR ,  
} 4nII/cPG  
z[\W\g*|ri  
/** FW)^O%2s  
* @param data I0w@S7  
* @param l ?[ S >&Vq  
* @param i @SC-vc  
*/ sb|3|J6=  
private void insertSort(int[] data, int start, int len) { Q;XHHk  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O<dZA=Oez  
} p~q_0Pg%  
} RUk<=! U  
} ()C^ta_]  
} g)9JO6]  
[pW1=tI  
堆排序: K\KO5A  
N=Uc=I7C  
package org.rut.util.algorithm.support; @ojg`!,  
h76NR  
import org.rut.util.algorithm.SortUtil; Dl zmAN  
Sz|Y$,  
/** 8 5%Pq:E  
* @author treeroot u1;e*ty  
* @since 2006-2-2 X(!AI|6Bt  
* @version 1.0 pcuMGo-#  
*/ "zedbJ0  
public class HeapSort implements SortUtil.Sort{ k>:/D  
nI*(a:  
/* (non-Javadoc) t?9 ;cS4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i_0 ,BV C  
*/ WAwfL?  
public void sort(int[] data) { xS~yH[k  
MaxHeap h=new MaxHeap(); mI7rx`4H  
h.init(data); =nvAOvP{?  
for(int i=0;i h.remove(); * >GIk`!wM  
System.arraycopy(h.queue,1,data,0,data.length); s3Krob`C5  
} q: Bt]2x  
//X e*0  
private static class MaxHeap{ E+m]aYu"  
9B+ zJ Vte  
void init(int[] data){ Ej+]^t$\  
this.queue=new int[data.length+1]; kJurUDo  
for(int i=0;i queue[++size]=data; { OxAY_  
fixUp(size); jMf 7J  
} 'HQ7 |Je  
} }RA3$%3  
foFg((tS  
private int size=0; h;EwkbDQg>  
Q{qj  
private int[] queue; iHE0N6%q  
-7-Fd_F8  
public int get() { BrNG%%n  
return queue[1]; $Yx6#m}[M  
} FXOT+9bg  
io t.E%G  
public void remove() { RwAbIXG{0  
SortUtil.swap(queue,1,size--); Yg=E@F   
fixDown(1); Z:_m}Ya|  
} ]RH=s7L  
file://fixdown ><;l:RGK|  
private void fixDown(int k) { GOYn\N;V2  
int j; )Lc<;=w'9  
while ((j = k << 1) <= size) { 85r)>aCMn  
if (j < size %26amp;%26amp; queue[j] j++; f MY;  
if (queue[k]>queue[j]) file://不用交换 ).0V%}>  
break; *? K4!q'  
SortUtil.swap(queue,j,k); ,+ns {ppn  
k = j; %_B:EMPd  
} , @%C8Z  
} -H1"OJ2aF  
private void fixUp(int k) { -1jjB1  
while (k > 1) { c }<*~w;  
int j = k >> 1; ~vW)1XnK  
if (queue[j]>queue[k]) S|K |rDr0n  
break; >]Mq)V9  
SortUtil.swap(queue,j,k); >AR Tr'B  
k = j; -"~L2f"?  
} LPEjRG,  
} T&9`?QD  
94T}iY.  
} )u39}dpeu  
<@u0.-]  
} 5TXg;v#Z  
KY4d+~2  
SortUtil: -W|*fKN`3  
u^`eKak"l  
package org.rut.util.algorithm; OJMvn'y  
R&6n?g6@/V  
import org.rut.util.algorithm.support.BubbleSort; |7rR99  
import org.rut.util.algorithm.support.HeapSort; P['X<Xt8  
import org.rut.util.algorithm.support.ImprovedMergeSort; IXGW2z;  
import org.rut.util.algorithm.support.ImprovedQuickSort; [ 3$.*   
import org.rut.util.algorithm.support.InsertSort; \e?.h m q  
import org.rut.util.algorithm.support.MergeSort; ~?FK ; (  
import org.rut.util.algorithm.support.QuickSort; Dz[566UD  
import org.rut.util.algorithm.support.SelectionSort; +VSZhg,Np8  
import org.rut.util.algorithm.support.ShellSort; sW;7m[o  
= y?#^  
/** ~_ *H)|  
* @author treeroot ~k9O5S{  
* @since 2006-2-2 fph-v-cl  
* @version 1.0 J1.qhy>  
*/ ( FM4 ^#6  
public class SortUtil { fucUwf\_  
public final static int INSERT = 1; @(Z( /P;:  
public final static int BUBBLE = 2; {J{1`@  
public final static int SELECTION = 3; Af`z/:0<  
public final static int SHELL = 4; D^|jZOJ  
public final static int QUICK = 5; F vj{@B!  
public final static int IMPROVED_QUICK = 6; LRWOBD  
public final static int MERGE = 7; smV!y8&  
public final static int IMPROVED_MERGE = 8; d{W}p~UbH  
public final static int HEAP = 9; /v5qyR7an  
/4yOs@#  
public static void sort(int[] data) { H\ 3M  
sort(data, IMPROVED_QUICK); pP3U,n   
} ~ 9=27 p  
private static String[] name={ USprsaj  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" u2 7S %2P  
}; d5Qd'  
P2On k l  
private static Sort[] impl=new Sort[]{ "r@G@pe  
new InsertSort(), ?gLAWz  
new BubbleSort(), VQ2Fnb4  
new SelectionSort(), SWT:frki`  
new ShellSort(), ;J'OakeVO  
new QuickSort(), i!L;? `F{  
new ImprovedQuickSort(), @.k5MOn  
new MergeSort(), ovz#  
new ImprovedMergeSort(), +I&J7ICV0  
new HeapSort() r]0(qg  
}; `0?^[;[u[  
9<v}LeX  
public static String toString(int algorithm){ sW?B7o?  
return name[algorithm-1]; q8/ihA6:  
} ms7SoY bSu  
IQIbz{bMx  
public static void sort(int[] data, int algorithm) { $Buf#8)F*  
impl[algorithm-1].sort(data); %bXsGPB  
} ;|6FdU  
2hy NVG&$  
public static interface Sort { %lV@:"G  
public void sort(int[] data); FRgLlp8x  
} )=Zsv40O  
o_O+u%y  
public static void swap(int[] data, int i, int j) { EX4 C.C|d  
int temp = data; l&3ki!  
data = data[j];  |# V(p^  
data[j] = temp; !_dR'  
}  \dTQQ  
} OTE<x"=h  
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