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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。 C!8XFf8e  
插入排序: _n;V iQMu  
3G7Qo  
package org.rut.util.algorithm.support; OK}+:Y  
Zn`vL52_  
import org.rut.util.algorithm.SortUtil; ."m2/Ks7  
/** T 6g(,xPcL  
* @author treeroot _pv<_ Sm  
* @since 2006-2-2 R8 lBh Ls  
* @version 1.0 45;{tS.z,B  
*/  v NJ!d  
public class InsertSort implements SortUtil.Sort{ ta-kqt!'  
76rNs|z~  
/* (non-Javadoc) ,nELWzz%{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nRmZu\(Ow|  
*/ A9[ELD>p  
public void sort(int[] data) { x;cjl6Acm  
int temp; 'bpx  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M#Vl{ b  
} 9_mys}+  
} QDg\GA8|  
} \y9( b  
vq~btc.p{&  
} ?6gC;B  
N!}r(Dd*  
冒泡排序: i#M$i*H*A  
 d!%:Ok  
package org.rut.util.algorithm.support; nZbfc;da  
b[3K:ot+  
import org.rut.util.algorithm.SortUtil; 6+9inWTT(  
4Y[uqn[  
/** ]$'w8<D>t,  
* @author treeroot 1} {bHj  
* @since 2006-2-2 ^y,% Tv>  
* @version 1.0 8%s_~Yc  
*/ A3C#w J  
public class BubbleSort implements SortUtil.Sort{ S/? KC^JP  
2V0gj /&  
/* (non-Javadoc) b NBpt}$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V3'QA1$  
*/ e?%Qv+)W  
public void sort(int[] data) { =Zcbfo_&  
int temp; IGj%)_W  
for(int i=0;i for(int j=data.length-1;j>i;j--){ bojx:g  
if(data[j] SortUtil.swap(data,j,j-1); e{~s\G8g  
} ZlHN-!OZp  
} |.x |BJ  
} ;=IGl:  
} zice0({iJ  
Azun"F_f  
} C~.7m-YW  
AKVll  
选择排序: gu[3L  
0i2ZgOJ  
package org.rut.util.algorithm.support; DbdxHuKa>  
cCd2f>EHw  
import org.rut.util.algorithm.SortUtil; );*A$C9RA  
`Tx1?]  
/** :bx q%D%|o  
* @author treeroot OQ>r;)/  
* @since 2006-2-2 Br2ZloJ@+  
* @version 1.0 Ldnw1xy  
*/ 2-9'zN0u  
public class SelectionSort implements SortUtil.Sort { T.vkGB=QZ%  
1'dL8Y  
/* 6@TGa%:G  
* (non-Javadoc) $\xS~ w  
* *%^Vq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iol.RszlZ|  
*/ URbu=U  
public void sort(int[] data) { DS,"^K  
int temp; R&13P&:g  
for (int i = 0; i < data.length; i++) { Hf ]aA_:   
int lowIndex = i; $0C1';=^}  
for (int j = data.length - 1; j > i; j--) { []D@"Bz  
if (data[j] < data[lowIndex]) { $okGqu8z.O  
lowIndex = j; 0s"g%gq|  
} /`YHPeXu  
} V&x6ru#  
SortUtil.swap(data,i,lowIndex); ULq#2l  
} d7+YCi?  
} Re3vW re  
zT[[WY4  
} ] 8sVXZ  
K8{Ub  
Shell排序: F2yc&mXyk  
0p\cDrB ?  
package org.rut.util.algorithm.support; ^Jb=&u$  
wXv\[z L`  
import org.rut.util.algorithm.SortUtil; \K+LKa)  
}v[*V   
/** >1[Hk0 <x  
* @author treeroot Fa`/i v  
* @since 2006-2-2 ;Ub;AqY  
* @version 1.0 /79_3;^  
*/ {umdW x.*  
public class ShellSort implements SortUtil.Sort{ JHpaDy*  
T!.6@g`x>  
/* (non-Javadoc) R=jIVw'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ">QNiR!  
*/ :jB8Q$s  
public void sort(int[] data) { iV5x-G`  
for(int i=data.length/2;i>2;i/=2){ H-GlCVq~  
for(int j=0;j insertSort(data,j,i); Ti`H?9t  
} ` V}e$  
} [,s{/OM  
insertSort(data,0,1); Gma)8X#  
} md_9bq/w  
b&BSigrvou  
/** +@),Fk_  
* @param data d5gYJ/Qv  
* @param j ?ic7M  
* @param i &D, gKT~  
*/ (,~gY=E+  
private void insertSort(int[] data, int start, int inc) { LFHV~>d  
int temp; ek~bXy{O`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #wH<W5gSZ  
} KlbL<9P >  
} h$)},% e  
} deR2l(0%yr  
7(<6+q2~  
} -`FPR4;  
M#II,z>q  
快速排序: 9V*h:[6a(  
\(Uw.ri  
package org.rut.util.algorithm.support; Ky33h 0TX  
tmF->~|  
import org.rut.util.algorithm.SortUtil; F%!ZHE7  
5bZf$$b  
/** #gbJ$1s  
* @author treeroot `z<k7ig  
* @since 2006-2-2 J_A+)_  
* @version 1.0 bV_@!KL$  
*/ Sns`/4S?6Z  
public class QuickSort implements SortUtil.Sort{ $ BV4i$  
_w8iPL5:  
/* (non-Javadoc) s^Lg*t 3I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Aox$[|@  
*/ B`,4M&  
public void sort(int[] data) { Rckqr7q  
quickSort(data,0,data.length-1); @l~zn%!X  
} |) {)w`  
private void quickSort(int[] data,int i,int j){ *C*n( the  
int pivotIndex=(i+j)/2; 5/-{.g   
file://swap Td%[ -  
SortUtil.swap(data,pivotIndex,j); yrO \\No#H  
%k(V 2]WF  
int k=partition(data,i-1,j,data[j]); 3*9<JHu  
SortUtil.swap(data,k,j); :K{!@=o  
if((k-i)>1) quickSort(data,i,k-1); e1ru#'z  
if((j-k)>1) quickSort(data,k+1,j); >gqM|-uY  
1Wzm51RU  
} .JIn(  
/** ZW\}4q;[A  
* @param data .^BL7  
* @param i W$=MuF7R  
* @param j JAM4 R_  
* @return QEIu}e6b  
*/ ;C,D1_20Z  
private int partition(int[] data, int l, int r,int pivot) { {Muw4DV  
do{ &Pu}"M$[MH  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1:S75~b-`  
SortUtil.swap(data,l,r); HY[eo/nM1d  
} {U?UM  
while(l SortUtil.swap(data,l,r); 1DPgiIG~  
return l; $y~!ePKh  
} Y <;A989D  
8w &A89  
} 6|*em4  
gZQ,br*  
改进后的快速排序: M$j]VZ  
_<x4/".}B3  
package org.rut.util.algorithm.support; zb/w^~J_i  
<t[WHDO`  
import org.rut.util.algorithm.SortUtil; S'"(zc3 =  
__jFSa`at  
/** L7i^?40  
* @author treeroot L=zt\L  
* @since 2006-2-2 QF 2Eg  
* @version 1.0 l n}2   
*/ /I@nPH<y  
public class ImprovedQuickSort implements SortUtil.Sort { @&!HMl  
vr#_pu)f4  
private static int MAX_STACK_SIZE=4096; Ba-Ftkb  
private static int THRESHOLD=10; %j9'HtjEa  
/* (non-Javadoc) <a_Q1 l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bd8,~8  
*/ oW]~\vp^0  
public void sort(int[] data) { _\M:h+^  
int[] stack=new int[MAX_STACK_SIZE]; OEc$ro=m*  
48 DC  
int top=-1; V6%J9+DK  
int pivot; Z3Le?cMt^  
int pivotIndex,l,r; 'LY.7cW  
^b-o  
stack[++top]=0; -DgJkyt+<  
stack[++top]=data.length-1; {1 fva^O  
qH(3Z^#.|  
while(top>0){ G5~ Jp#uA  
int j=stack[top--]; :p^7XwX%w  
int i=stack[top--]; ~x`BV+R  
afEhC0j  
pivotIndex=(i+j)/2; e-vwve  
pivot=data[pivotIndex]; tjw4.L<r  
9L+dN%C  
SortUtil.swap(data,pivotIndex,j); &_cMbFLBP  
\ UCOe  
file://partition (dl7+  
l=i-1; '5j$wr zt  
r=j; QAiont ,!  
do{ 5x";}Vp>P  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0. _)X  
SortUtil.swap(data,l,r); ^F @z +q  
} /DPD,bA  
while(l SortUtil.swap(data,l,r); d\Q~L 3x  
SortUtil.swap(data,l,j); Zi$v-b*<  
$@y<.?k>UP  
if((l-i)>THRESHOLD){ (gd+-o4  
stack[++top]=i; hVPSW# .d  
stack[++top]=l-1; -z"=d<@  
} tY=sl_  
if((j-l)>THRESHOLD){ 5v:c@n  
stack[++top]=l+1; jr$]kLY  
stack[++top]=j; ~3YN;St-  
} :sD/IM",},  
hiKgV|ZD  
} BfmSM9  
file://new InsertSort().sort(data); =<nx [J  
insertSort(data); 7VWq8FH`  
} 5c*kgj:x  
/** |> mx*G  
* @param data WVPnyVDc  
*/ 6 Fz?'Xf  
private void insertSort(int[] data) { G:TM k4  
int temp; ]oy>kRnb {  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wm>I;|gA)  
} 34lt?6%j  
} Qo7]fnnaV  
} pJ*x[y  
}[a  
}  c=? =u  
%J`cYn#  
归并排序: a#i;*J  
%W!C  
package org.rut.util.algorithm.support; &m@~R|  
1&_9 3  
import org.rut.util.algorithm.SortUtil; V[&4Km9C  
t#pF.!9=  
/** kaBP& 6|Z  
* @author treeroot "o+E9'Dm  
* @since 2006-2-2 NE Br) ~  
* @version 1.0 ROZOX$XM  
*/ t;ZA}>/  
public class MergeSort implements SortUtil.Sort{ hrsMAh!  
_&0_@  
/* (non-Javadoc) i|zs Li/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BJzNh>-#=  
*/ e))fbv&V  
public void sort(int[] data) { .GG6wL<$?  
int[] temp=new int[data.length]; )m . KV5K!  
mergeSort(data,temp,0,data.length-1); .qBL.b_`  
} E .2b@  
y%* hHnGd  
private void mergeSort(int[] data,int[] temp,int l,int r){ YKF5|;}  
int mid=(l+r)/2; yQ5F'.m9e  
if(l==r) return ; `Mj>t(  
mergeSort(data,temp,l,mid); 1\G S"4~P  
mergeSort(data,temp,mid+1,r); e C\;n  
for(int i=l;i<=r;i++){ di^E8egR$  
temp=data; `?Wy;5-  
} !1+yb.{\  
int i1=l; p$r=jF&  
int i2=mid+1; m0XdIC]s  
for(int cur=l;cur<=r;cur++){ cuenDw=eC  
if(i1==mid+1) KW^#DI6tr  
data[cur]=temp[i2++]; :by EXe;3  
else if(i2>r) @=@7Uu-  
data[cur]=temp[i1++]; !`j}%!K!  
else if(temp[i1] data[cur]=temp[i1++]; U&DD+4+28:  
else N%8O9Dp8;  
data[cur]=temp[i2++]; 4`(b(DL]  
} fQZ,kl  
} yk1.fxik'  
(8bo"{zI  
} 1A>>#M=A  
t[L0kF9en  
改进后的归并排序: Yvky=RM  
:Iy4 B+  
package org.rut.util.algorithm.support; 07L >@Gf  
2"Oj* ;  
import org.rut.util.algorithm.SortUtil; r*e<`Is  
NkWU5E!  
/** OMaG*fb=  
* @author treeroot x'Uv;mGo  
* @since 2006-2-2 .Y;ljQ  
* @version 1.0 3ya_47D  
*/ ZbS* zKEW  
public class ImprovedMergeSort implements SortUtil.Sort { `/WX!4eR,  
)?@X{AN&  
private static final int THRESHOLD = 10; /5@4}m>Z@  
@EPO\\C"f  
/* P)VysYb?  
* (non-Javadoc) %!_okf   
* &~ =q1?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8T3j/ D<r  
*/ 3vs;ZBM  
public void sort(int[] data) { tS1(.CRk  
int[] temp=new int[data.length]; 'q+CL&D  
mergeSort(data,temp,0,data.length-1); 9NX/OctFa'  
} | Vl Q0{  
} v#Tm  
private void mergeSort(int[] data, int[] temp, int l, int r) { G5JZpB#o  
int i, j, k; {yPJYF_l  
int mid = (l + r) / 2; nq9|cS%-  
if (l == r) }jF67c->  
return; Ni"M.O);t  
if ((mid - l) >= THRESHOLD) q|Oz   
mergeSort(data, temp, l, mid); X?p.U  
else FQc8j:'  
insertSort(data, l, mid - l + 1); u ##.t  
if ((r - mid) > THRESHOLD) [QC|Kd^#  
mergeSort(data, temp, mid + 1, r); vjfV??XSU  
else <F~0D0G  
insertSort(data, mid + 1, r - mid); ^ +e5 M1U=  
~,199K#'  
for (i = l; i <= mid; i++) { -kFPmM;  
temp = data; !nPwRK>  
} EfTuHg$pe  
for (j = 1; j <= r - mid; j++) { [N$#&4{Je  
temp[r - j + 1] = data[j + mid]; Rd4 z+G  
} @"B"*z-d  
int a = temp[l]; Re`'dde=  
int b = temp[r]; hj~nLgpN  
for (i = l, j = r, k = l; k <= r; k++) { I-=H;6w7  
if (a < b) { jrOqspv   
data[k] = temp[i++]; *)+K+J  
a = temp; 8OYw72&  
} else { 3B{B6w}t&  
data[k] = temp[j--]; V(-=@UW  
b = temp[j]; Fo$kD(  
} O!Rw? Y  
} (5-4`:1ux  
} 5Z2tTw'i  
O@$wU9 D<  
/** bV'^0(Zv  
* @param data K6C@YY(  
* @param l  X`REhvT  
* @param i @wzzI 7}C  
*/ u0Nag=cU  
private void insertSort(int[] data, int start, int len) { H<hFA(M  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); //[zUn  
} ENmfbJ4d~  
} v6Vd V.BI  
} h x _,>\@  
} p5 !B  
4P1<Zi+<  
堆排序: n"p|tEK  
o.)8  A8  
package org.rut.util.algorithm.support; 38I.1p9  
@U~i<kt  
import org.rut.util.algorithm.SortUtil; Wr3).m52}P  
>= G{.H  
/** Zx%ib8| j  
* @author treeroot $i:wS= w'  
* @since 2006-2-2 2YU-iipdOq  
* @version 1.0 d[cqs9=\  
*/ )#NT*@j`  
public class HeapSort implements SortUtil.Sort{ @Ido6Z7  
`^mPq?f  
/* (non-Javadoc) BCrX>Pp }r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @raw8w\Zj+  
*/ @W{VT7w  
public void sort(int[] data) { &}YJ"o[I  
MaxHeap h=new MaxHeap(); Py&DnG'H  
h.init(data); 'G6M:IXno  
for(int i=0;i h.remove(); dtXA EL\q  
System.arraycopy(h.queue,1,data,0,data.length); mX4u#$xs:  
} +Wr"c  
I U Mt^z  
private static class MaxHeap{ ^rHG#^hA  
`|{6U"n  
void init(int[] data){ X=sC8Edx  
this.queue=new int[data.length+1]; zc}qAy'<  
for(int i=0;i queue[++size]=data; \.@fAgv  
fixUp(size); ^oL43#Nlo  
} `{1&*4!  
} PT`];C(he  
W .B>"u  
private int size=0; 47GL[ofY  
{~Q9jg(A  
private int[] queue; KGVAP  
iyj,0T  
public int get() { ?Re6oLm<B  
return queue[1]; J ejDF*Q  
} ?u*gKI  
n$jOk |W  
public void remove() { MS_@ Xe  
SortUtil.swap(queue,1,size--); mKsTA;  
fixDown(1); F5*NK!U  
} F"#8`Ps>  
file://fixdown W(C\lSE0  
private void fixDown(int k) { *%{  
int j; {*X8!P7C  
while ((j = k << 1) <= size) { T)!$-qdz/  
if (j < size %26amp;%26amp; queue[j] j++; $?Et sf#*'  
if (queue[k]>queue[j]) file://不用交换 YY&3M  
break; 3@d{C^\  
SortUtil.swap(queue,j,k); !I 7bxDzK$  
k = j; +PCsp'D d  
} Usa  
} eHjna\C  
private void fixUp(int k) { 't3@dz_dG  
while (k > 1) { W7j-siWJ  
int j = k >> 1; -T s8y  
if (queue[j]>queue[k]) &~%( RO  
break; N33{vx  
SortUtil.swap(queue,j,k); iva?3.t  
k = j; rO_|_nV[  
} r`; "  
} 01/?  
4yk!T  
} 17itC9U  
@,Re<%\  
} N@oNg}D&:  
-w0U }Te^  
SortUtil: ))pp{X2m  
mt0ZD}E  
package org.rut.util.algorithm; :X?bWxOJ  
s+=JT+g  
import org.rut.util.algorithm.support.BubbleSort; P,(Tu.EPk  
import org.rut.util.algorithm.support.HeapSort; l$i^e|*  
import org.rut.util.algorithm.support.ImprovedMergeSort; .7BB*!CP  
import org.rut.util.algorithm.support.ImprovedQuickSort; [P,/J$v^~  
import org.rut.util.algorithm.support.InsertSort; %LL*V|  
import org.rut.util.algorithm.support.MergeSort; ylV.ZoY6  
import org.rut.util.algorithm.support.QuickSort; O_f+#K)  
import org.rut.util.algorithm.support.SelectionSort; #4?(A[]>H  
import org.rut.util.algorithm.support.ShellSort; ndsu}:my  
|5ifgSZ  
/** f;Iaf#V_  
* @author treeroot |o:[*2-   
* @since 2006-2-2 .^?^QH3  
* @version 1.0 #rE#lHo  
*/ DeMF<)#  
public class SortUtil { <])w@QOA#  
public final static int INSERT = 1; :4{;^|RgU  
public final static int BUBBLE = 2; 'G.^g}N1  
public final static int SELECTION = 3; + lha=  
public final static int SHELL = 4; Bn[5M [  
public final static int QUICK = 5; -:5]*zVp+-  
public final static int IMPROVED_QUICK = 6; S`!MoIMsD  
public final static int MERGE = 7; jq4'=L$4  
public final static int IMPROVED_MERGE = 8; 4z~%gt74O]  
public final static int HEAP = 9; &HPzm6.3  
33R_JM{  
public static void sort(int[] data) { /,>@+^1  
sort(data, IMPROVED_QUICK); ~-"<)XPe  
}  >%~E <  
private static String[] name={ ?z:Xdx\l  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,| \62B`  
}; c{iF  
$WOiXLyCk  
private static Sort[] impl=new Sort[]{ DwQa j"1<%  
new InsertSort(), vd4}b>  
new BubbleSort(), tRqg')y  
new SelectionSort(), J!%cHqR  
new ShellSort(), HuX{8nl a  
new QuickSort(), q{rc[ s?  
new ImprovedQuickSort(), $] js0 )>  
new MergeSort(), \X'{ ee  
new ImprovedMergeSort(), a"!D @a  
new HeapSort() oNgu- &  
}; gFsnL*L0  
WsA(8Ck<  
public static String toString(int algorithm){ 8a\ Pjk  
return name[algorithm-1]; 8:BPXdiK  
} n ..9F$a  
[@Db7]nG  
public static void sort(int[] data, int algorithm) { C,+ Sv-  
impl[algorithm-1].sort(data); 1I#S?RSb  
} 7qyv.{+  
;K'1dsA  
public static interface Sort { bd n{Y  
public void sort(int[] data); y=L9E?  
} H:~41f[  
Q~5!c#r  
public static void swap(int[] data, int i, int j) { y6[^I'kz  
int temp = data; JsOu *9R  
data = data[j]; Eua\N<!aai  
data[j] = temp; n3-2;xuNKE  
} zuWfR&U|W  
} D@Zb|EI%<  
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