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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 cPh @3  
插入排序: ;\4}Hcg  
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package org.rut.util.algorithm.support; 'e;*V$+  
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import org.rut.util.algorithm.SortUtil; #vLDNR  
/** t8]u#bx"?  
* @author treeroot mQ VduG  
* @since 2006-2-2  ?o9l{4~g  
* @version 1.0 dL6sb;7R  
*/ ` mALx! `  
public class InsertSort implements SortUtil.Sort{  gT O%  
MI',E?#yB  
/* (non-Javadoc) MT%ky  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I>L lc Y  
*/ 3w!oJB  
public void sort(int[] data) { a ^4(7  
int temp; wnt^WW=a[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0e:KiUr  
} -_>c P  
} clG3t eC  
} rAP+nh ans  
jD H)S{k  
} 4zJ9bF4  
Br \/7F  
冒泡排序: /xrt,M@  
6K?+adKlc  
package org.rut.util.algorithm.support; zs[t<`2  
``aoLQc`  
import org.rut.util.algorithm.SortUtil; cf0em!  
]vKxgfF  
/** Wd~}O<"  
* @author treeroot `Bkba:  
* @since 2006-2-2 `n5RDz/f0  
* @version 1.0 6u8`,&U  
*/ $Cc4Sggq  
public class BubbleSort implements SortUtil.Sort{ LT'#0dCC  
2R<1  ^  
/* (non-Javadoc) ]r|.\}2Y7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g&_0)(a\  
*/ mI0| lp 1$  
public void sort(int[] data) { [}P|OCW  
int temp; G=yQYsC$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1DZGb)OU  
if(data[j] SortUtil.swap(data,j,j-1); 4XX21<yn  
} MKoN^(7  
} c!w4N5aM  
} pjjs'A*y  
} !B-&I E?  
hrEKmRmF-  
} MzJ5_}  
W=F?+Kg L  
选择排序: "* 'rzd  
H~x0-q<8  
package org.rut.util.algorithm.support; !aLByMA  
RsTpjY*Xb  
import org.rut.util.algorithm.SortUtil; 9;h 1;9sC|  
^0X86  
/** pjbKMx  
* @author treeroot K")-P9I6-f  
* @since 2006-2-2 !H?#~{ W}  
* @version 1.0 9H.E15B  
*/ DPy"FQYZb  
public class SelectionSort implements SortUtil.Sort { 9dKrE_zK:  
7sHtJr  
/* ps<JKHC/c  
* (non-Javadoc) < >f12pu  
* iW)FjDTP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o Q{gh$6*  
*/ @iWIgL  
public void sort(int[] data) { 2"V?+Hhz  
int temp; v]_{oj_(-  
for (int i = 0; i < data.length; i++) { /xf %Rp4}  
int lowIndex = i; ''f  
for (int j = data.length - 1; j > i; j--) { go{'mX)}u  
if (data[j] < data[lowIndex]) { =( Gv_  
lowIndex = j; = @ph  
} mjy%xzVr6^  
} n:k~\-&WJ  
SortUtil.swap(data,i,lowIndex); ,`-6!|:  
} '%K,A-7W  
} eJ7A.O  
/!7m@P|&D  
} W.0dGUi*  
7 NJ1cQ-}t  
Shell排序: -Frx{3  
!>t |vgW  
package org.rut.util.algorithm.support; ,Sz*]X  
lza'l  
import org.rut.util.algorithm.SortUtil; oSy[/Y44a  
]^aece t  
/** ;Iv)J|*  
* @author treeroot S=M$g#X`5  
* @since 2006-2-2 R<k4LHDy  
* @version 1.0 8 kd  
*/ Is?0q@  
public class ShellSort implements SortUtil.Sort{ m_(+-G  
fE_QB=9 cz  
/* (non-Javadoc) ^pZ(^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q] ,&$d^@  
*/ (*"R"Y  
public void sort(int[] data) { *,pG4kh!  
for(int i=data.length/2;i>2;i/=2){ J. {[>  
for(int j=0;j insertSort(data,j,i); uCUQxFp  
} HjV83S;  
} qZA?M=NT?  
insertSort(data,0,1); &t%ICz&3  
} fqvA0"tv  
W%~ S~wx  
/** yfuvU2nVH  
* @param data "C}nS=]8m  
* @param j [/5>)HK} C  
* @param i Mgf80r=  
*/ WWq)Cw R  
private void insertSort(int[] data, int start, int inc) { QD / | zi  
int temp; yUEUIPL  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m6'YFpf)V  
} JLc\KVmF  
} $@Hw DRP  
} sV3/8W13  
AO/J:`  
} }5DyNfZ]+0  
vxbO>c   
快速排序: ab3" ?.3m  
.hT^7|Jz[  
package org.rut.util.algorithm.support; I uhyBo  
T[ky7\  
import org.rut.util.algorithm.SortUtil; y . AN0  
uOm fpgO  
/** ^@L  
* @author treeroot e|Lh~sVq  
* @since 2006-2-2 V3F2Z_VH2  
* @version 1.0 PT>,:zY  
*/ !m]76=@  
public class QuickSort implements SortUtil.Sort{ 5+,&9;'Y^  
k]I<%  
/* (non-Javadoc) t {x&|%u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 64>Zr  
*/ !cWKY \lpv  
public void sort(int[] data) { Q.vtU%T  
quickSort(data,0,data.length-1); ]+fL6"OD/2  
} >Q"eaJxE!l  
private void quickSort(int[] data,int i,int j){ ?t?!)#X  
int pivotIndex=(i+j)/2; MIi:\m5  
file://swap #?8'Z/1 )  
SortUtil.swap(data,pivotIndex,j); gzl_  "j  
+F+jC9j(<  
int k=partition(data,i-1,j,data[j]); (QqKttL:  
SortUtil.swap(data,k,j); ZTHr jW1  
if((k-i)>1) quickSort(data,i,k-1); *-` /A  
if((j-k)>1) quickSort(data,k+1,j); 5k<HO_]  
2/(gf[elX  
} mlIc`GSI  
/** gIRFqEz@o  
* @param data ihs@ 'jh  
* @param i ;~xkT'  
* @param j IvH0sS`F  
* @return //| 9J(B]  
*/ ~Dgui/r9J  
private int partition(int[] data, int l, int r,int pivot) { ` YIpZ rB  
do{ cl14FrpYu  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fa"eyBO50  
SortUtil.swap(data,l,r); RwY) O5  
} )mp0k%  
while(l SortUtil.swap(data,l,r); WS2TOAya)  
return l; MqXA8D  
} tAYu|\]  
va#~ \%`  
} N[r@Y{  
1 5rE|m^  
改进后的快速排序: PvKe|In(  
H6e ^" E  
package org.rut.util.algorithm.support; ,!bOzth2>K  
N b(se*Y#  
import org.rut.util.algorithm.SortUtil; pE15[fJ`  
o$Hc5W([Z  
/** scN}eg:5  
* @author treeroot Gz ^g!N[  
* @since 2006-2-2 pOw4H67  
* @version 1.0 :i?Z1x1`  
*/ b!_l(2  
public class ImprovedQuickSort implements SortUtil.Sort { )e]:T4*vo  
WMl_$Fd6  
private static int MAX_STACK_SIZE=4096; dk;Ed  
private static int THRESHOLD=10; x"_f$,:!  
/* (non-Javadoc) b]CJf8'u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %xWmzdn  
*/ vWzNsWPK"{  
public void sort(int[] data) { ~5]AXi'e~  
int[] stack=new int[MAX_STACK_SIZE]; Og-M nx3  
p 4(-  
int top=-1; [NaU\;w\  
int pivot; -hhE`Y  
int pivotIndex,l,r; ]:]2f 9y  
qF( ]Ce  
stack[++top]=0; uCmdNY  
stack[++top]=data.length-1; {TUCa  
v }P~g  
while(top>0){ =ngu*#?c4  
int j=stack[top--]; h_y<A@[P}  
int i=stack[top--]; 69q8t*%O  
Gs*ea'T)  
pivotIndex=(i+j)/2; $#"}g#u  
pivot=data[pivotIndex]; t41\nTZr  
8v(Xr}q,r  
SortUtil.swap(data,pivotIndex,j); 8>O'_6Joj  
?55('+{l  
file://partition c.jnPVf:  
l=i-1; I~4 `NV0  
r=j; l\MiG Na  
do{ V<ODt%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <2|x]b 8  
SortUtil.swap(data,l,r); zA-?x1th&  
} 1Kwl_jf  
while(l SortUtil.swap(data,l,r); F"B!r-J  
SortUtil.swap(data,l,j); zse! t  
etGquW.  
if((l-i)>THRESHOLD){ swlxV@NQ  
stack[++top]=i; 5dYIL`  
stack[++top]=l-1; NW!e@;E+i  
} oJXZ}>>iT  
if((j-l)>THRESHOLD){ :!{aey  
stack[++top]=l+1; jY ^ndr0;  
stack[++top]=j; )Tb{O  
} 7"8HlOHA  
YMqL,& Q{1  
} t}*teo[  
file://new InsertSort().sort(data); S5bk<8aPP  
insertSort(data); ?&/9b)cS  
} = ng\  
/** {L<t6A  
* @param data mHw1n=B  
*/ /0@}7+&  
private void insertSort(int[] data) { x-%nnC6e  
int temp; w8{deSdfP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5'oWd e  
} yd>kJk^~/  
} Prjl ;[I}  
} sU+~#K$ b  
O7rm(  
} i<%(Z[9Lk  
_$Z46wHmB  
归并排序: \a|gzC1G  
~(hmiNa;  
package org.rut.util.algorithm.support; LJI&j \  
mv30xcc  
import org.rut.util.algorithm.SortUtil; Snh\Fgdz  
#Oe=G:+A  
/** O\G%rp L$w  
* @author treeroot S:^Q(w7  
* @since 2006-2-2 a?+) K  
* @version 1.0 _Zb_9&  
*/ Xwx;m/  
public class MergeSort implements SortUtil.Sort{ FK mFjqY  
lkw[Z}\  
/* (non-Javadoc) cl)MI,/>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dw.>4bA.  
*/ Zc%S`zK`7  
public void sort(int[] data) { ",~3&wx  
int[] temp=new int[data.length]; UbMcXH8=F  
mergeSort(data,temp,0,data.length-1); ! '2'db  
} #2cH.`ty  
!$_mWz  
private void mergeSort(int[] data,int[] temp,int l,int r){ [a+?z6qI\}  
int mid=(l+r)/2; ,pAMQ5  
if(l==r) return ; Qt@~y'O  
mergeSort(data,temp,l,mid); 8mCr6$|%  
mergeSort(data,temp,mid+1,r); $xloB  
for(int i=l;i<=r;i++){ v,>q]! |a  
temp=data; J^t=.-a|  
} e3(0L I  
int i1=l; UejG$JyHP  
int i2=mid+1; lg!1q8  
for(int cur=l;cur<=r;cur++){ G&3j/5V  
if(i1==mid+1) !gT6S o  
data[cur]=temp[i2++]; TOBAh.1  
else if(i2>r) ~t#'X8.)  
data[cur]=temp[i1++]; ?V7[,I1?  
else if(temp[i1] data[cur]=temp[i1++]; 59EAqz[:  
else c 6?5?_ne  
data[cur]=temp[i2++]; Z?v9ub~%  
} m{V @Om  
} | sQ5`lV?  
VQ}=7oe%q  
} 8PQ$X2)  
I7[+:?2  
改进后的归并排序: 7Y!^88,f.  
"CZ`hx1|^  
package org.rut.util.algorithm.support; y ruN5  
>,~JQ%1  
import org.rut.util.algorithm.SortUtil; pq4+n'uO  
if `/LJsa  
/** !XtbZ-  
* @author treeroot Qs,LK(1  
* @since 2006-2-2 (:hPT-1  
* @version 1.0 k@wT,?kD  
*/ 3w^q0/ GD  
public class ImprovedMergeSort implements SortUtil.Sort { I/Vlw-  
^U`[P@T  
private static final int THRESHOLD = 10; UO!OO&l!  
gzC\6ca  
/* SJy?^  
* (non-Javadoc) - 6  
* _`;6'}]s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z NuyGo;  
*/ ,:,c kul  
public void sort(int[] data) { ]jy6C'Mp  
int[] temp=new int[data.length]; 40:YJ_n  
mergeSort(data,temp,0,data.length-1); %*/?k~53  
} ^K;,,s;0  
S&R~*  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~ xXB !K~C  
int i, j, k; 5))?,YkrrI  
int mid = (l + r) / 2; [u-~<80  
if (l == r) &[kwM3 95  
return; *1>XlVx,  
if ((mid - l) >= THRESHOLD) fEgZ/p!g  
mergeSort(data, temp, l, mid); D6v0n6w  
else O'!k$iJNb  
insertSort(data, l, mid - l + 1); ,ciNoP*-~%  
if ((r - mid) > THRESHOLD) q WP1i7]=/  
mergeSort(data, temp, mid + 1, r); Nzr zLK  
else N"2@y aN  
insertSort(data, mid + 1, r - mid); r]8B6iV  
IOfo]p-  
for (i = l; i <= mid; i++) { H]}- U8}sp  
temp = data; dnN"  
} M g;;o  
for (j = 1; j <= r - mid; j++) { <'s1+^LC  
temp[r - j + 1] = data[j + mid]; [#14atv  
} > m5j.GP;  
int a = temp[l]; ch< zpo:  
int b = temp[r]; .Sb|+[{  
for (i = l, j = r, k = l; k <= r; k++) { 4;j #7  
if (a < b) { G\Sd!'?p  
data[k] = temp[i++]; +z9;BPw %  
a = temp; S Xgpj  
} else { =D3Y q?  
data[k] = temp[j--]; b z<wihZj  
b = temp[j]; 2{{M{#}S.  
} Ij4\*D!  
} ;/e!!P]jP  
} *A8CJ  
s7&% _!4  
/** (o e;p a  
* @param data ) Oa"B;\j  
* @param l DhB: 8/J  
* @param i |!&,etu  
*/ <G6wpf8M  
private void insertSort(int[] data, int start, int len) { 17nWrTxR$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )_+#yaC  
} {!E<hQ2<$9  
} XFd[>U<X  
} sPbtv[bC  
} +mAMCM2N  
M0_K%Z(zaR  
堆排序: fzSZ>I0R  
DY,Sfh;tp  
package org.rut.util.algorithm.support; b_][Jye&P  
ZXr]V'Q?  
import org.rut.util.algorithm.SortUtil; `[Lap=.' .  
U:8^>_  
/** UVU}  
* @author treeroot qf7.Sh  
* @since 2006-2-2 (<1DPpy95O  
* @version 1.0 r+ vtKb  
*/ >"ZTyrK  
public class HeapSort implements SortUtil.Sort{ WhK?>u  
|a'Q^aT  
/* (non-Javadoc) =m-_0xo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mflI>J=g  
*/ i 0L7`TB  
public void sort(int[] data) { \ fwf\&  
MaxHeap h=new MaxHeap(); 9:@os0^O  
h.init(data); >) 5rOU  
for(int i=0;i h.remove(); Kji}2j'a  
System.arraycopy(h.queue,1,data,0,data.length); 6x -PGq  
} Sw(%j1uL  
*~fN^{B'!  
private static class MaxHeap{ yv'mV=BMJ!  
v[lytX4)  
void init(int[] data){ sW=@G'}3  
this.queue=new int[data.length+1]; q2,@>#  
for(int i=0;i queue[++size]=data; \ iP[iE=  
fixUp(size); L.|GC7$0  
} $SXF>n{}  
} iUl{_vb  
gqe z-  
private int size=0; 3V,X=  
GWP"i77y0s  
private int[] queue; 8uCd|dJ  
dQizM^j  
public int get() { Mzb_o2^(  
return queue[1]; d2(eX\56Z  
} {CGk5`g~  
-Fl3m  
public void remove() { %%-kUe  
SortUtil.swap(queue,1,size--); =z@'vu$Fh  
fixDown(1); Jg%sl& 65  
} 8zpK; +  
file://fixdown V-X n&s  
private void fixDown(int k) { dxASU|Yo9  
int j; VUx~Y'b  
while ((j = k << 1) <= size) { fA+M/}=  
if (j < size %26amp;%26amp; queue[j] j++; WG^D$L:  
if (queue[k]>queue[j]) file://不用交换 $G=\i>R.  
break; `|PxEif+J  
SortUtil.swap(queue,j,k); v}cm-_*v  
k = j; eueXklpg+  
} DO %YOv  
} P- vA.7  
private void fixUp(int k) { xw?G?(WO  
while (k > 1) { tG#F7%+E  
int j = k >> 1; neZ_TT/3K  
if (queue[j]>queue[k]) fnXl60C%  
break; i!Ne<Q  
SortUtil.swap(queue,j,k); :F<a~_k  
k = j; 9xu&n%L=  
} |kVxrq  
} c=| a\\  
mKn[>M1  
} 1 9)78kV{  
{O"dj;RU  
} 16aaIK  
1}'Jbj"/  
SortUtil: %%DK?{jo`  
S[ 2`7'XV  
package org.rut.util.algorithm; "#JoB X@yE  
LLU>c]a  
import org.rut.util.algorithm.support.BubbleSort; :Mt/6}  
import org.rut.util.algorithm.support.HeapSort; z&- `<uV~  
import org.rut.util.algorithm.support.ImprovedMergeSort; -,+JE0[  
import org.rut.util.algorithm.support.ImprovedQuickSort; 0\ gE^=o[  
import org.rut.util.algorithm.support.InsertSort; |Z "h q  
import org.rut.util.algorithm.support.MergeSort; DSnsi@Mi  
import org.rut.util.algorithm.support.QuickSort; +B&FZ4'  
import org.rut.util.algorithm.support.SelectionSort; Rdv"Aj:  
import org.rut.util.algorithm.support.ShellSort; @yek6E&9  
XM_S"  
/** 5 WAsEP  
* @author treeroot km3-Hp1  
* @since 2006-2-2 $[1 M2>[  
* @version 1.0 _e-a>y  
*/ Z`:V~8=l  
public class SortUtil { fmSA.z  
public final static int INSERT = 1; )c!f J7o:  
public final static int BUBBLE = 2; xt-;7  
public final static int SELECTION = 3; &2[OH}4  
public final static int SHELL = 4; hRTw8-wy:  
public final static int QUICK = 5; 5xe} ljo  
public final static int IMPROVED_QUICK = 6; G vMhgG=D  
public final static int MERGE = 7; S0\QZ/je  
public final static int IMPROVED_MERGE = 8; 42E]&=Cet  
public final static int HEAP = 9; Bee`Pp2  
2%UzCK  
public static void sort(int[] data) { fTd=}zY  
sort(data, IMPROVED_QUICK); \=PnC}7I  
} IHHL. gT  
private static String[] name={ V:HxRMF2X  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ")m 0 {  
}; 2#LTd{  
W5 ^eCYHoi  
private static Sort[] impl=new Sort[]{ %0l'Nuz  
new InsertSort(), ){^o"A?-:  
new BubbleSort(), 5<ZE.'O  
new SelectionSort(), ci*rem  
new ShellSort(), xa#;<8 iV  
new QuickSort(), "=<T8M  
new ImprovedQuickSort(), 0N.B =j|  
new MergeSort(), 0Cd )w4C  
new ImprovedMergeSort(), 3NU{7,F  
new HeapSort() >tc#Ofgzd  
}; |j:"n3~6  
zA/ tHlKc  
public static String toString(int algorithm){ r ,I';vm<`  
return name[algorithm-1]; [Z~h!}  
} DmzK* O{  
,5}%_  
public static void sort(int[] data, int algorithm) {  *-Y`7=^$  
impl[algorithm-1].sort(data); Wk<heF  
} b7-M'-Km0_  
|Z6M?n  
public static interface Sort { Q8-;w{%  
public void sort(int[] data); EHI %QT  
} Z*uv~0a>9Q  
u}_,4J  
public static void swap(int[] data, int i, int j) { HK}br!?  
int temp = data; xib?XzxGo  
data = data[j]; =Q+i(UGHi  
data[j] = temp; rdj_3Utv  
} S7oPdzcU-  
} {"kE u  
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