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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。 kwp%5C-S  
插入排序: ^li3*#eT  
a<-aE4wdm  
package org.rut.util.algorithm.support; {J"]tx9 ]  
7)U ik}0  
import org.rut.util.algorithm.SortUtil; nReIi;pi  
/** :i{M1z I  
* @author treeroot f}yRTR GJv  
* @since 2006-2-2 u.A}&'H  
* @version 1.0 `\@n&y[`7  
*/ oLkzLJ  
public class InsertSort implements SortUtil.Sort{ *-ys}sX  
w<~[ad}  
/* (non-Javadoc) B*:I-5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z,p@toj'  
*/ #|T"6jJaQ  
public void sort(int[] data) { fTpG>*{p  
int temp; r], %:imGr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9qDM0'WuU  
} u"zR_CzYc  
} or#] ![7N  
} t<dFH}U`w  
gdCit-3  
} ~0+<-T  
P84YriLo  
冒泡排序: n><ad*|MX  
UB+~K/  
package org.rut.util.algorithm.support; PCwc=  
T}{zh  
import org.rut.util.algorithm.SortUtil; A3.I|/  
4Y'Ne2M{  
/** +-b'+mF  
* @author treeroot xKUWj<+/  
* @since 2006-2-2 ^X6e\]yj  
* @version 1.0 XzIC~}  
*/ kI a16m  
public class BubbleSort implements SortUtil.Sort{ )n"0:"Ou  
]["%e9#aX  
/* (non-Javadoc) 3{.]!   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J0vQqTaT  
*/ B#hvw'}  
public void sort(int[] data) { v .*fJ   
int temp; v6DjNyg<x  
for(int i=0;i for(int j=data.length-1;j>i;j--){ E,\)tZ;,  
if(data[j] SortUtil.swap(data,j,j-1); S]=.p-Am  
} wZ0bD&B  
} yp4[EqME  
} )?OdD7gd  
} e}-fGtFx  
Y,L[0%  
} prt(xr4@  
Ohj^Z&j  
选择排序: %5+X  
%CYo, e  
package org.rut.util.algorithm.support; [;aM8N  
i `f!)1  
import org.rut.util.algorithm.SortUtil; W;T0_=  
UrciCOQf  
/** 8mmnnf{P  
* @author treeroot Q=%W-  
* @since 2006-2-2 i,"Xw[H*s  
* @version 1.0 !4#qaH-Q  
*/ LH}9&FfjU  
public class SelectionSort implements SortUtil.Sort { jP/Vqe%%8  
 wT19m  
/* SJX9oVJeZ  
* (non-Javadoc) OY(CB(2N  
* C7R3W,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W tw,YFT  
*/ lijT L-3  
public void sort(int[] data) { Q jXJo$I6  
int temp; 9[X'9* ,  
for (int i = 0; i < data.length; i++) { Z~h6^h   
int lowIndex = i; ,6MJW#~]  
for (int j = data.length - 1; j > i; j--) { @",#'eC"  
if (data[j] < data[lowIndex]) { Oq% TW|a#  
lowIndex = j; oB!Y)f6H1  
} 4Zu1G#(zP  
} wXp:XZ:]T  
SortUtil.swap(data,i,lowIndex); oL R/\Y(  
} %U}6(~  
} x ~)~v?>T  
|uz<)  
} ed5oN^V.<  
JAjiG^]  
Shell排序: &0[ L2x}7  
uUx7>algF  
package org.rut.util.algorithm.support; - |DWPU!"  
1k:yU(  
import org.rut.util.algorithm.SortUtil; E=,b;S-  
mX.mX70|J  
/** 4P)#\$d:  
* @author treeroot *re?V9  
* @since 2006-2-2 '3^qW  
* @version 1.0 E<! L^A M`  
*/ \hI?XnL#  
public class ShellSort implements SortUtil.Sort{ Hci>q`p#  
rxol7"2l  
/* (non-Javadoc) 9?hF<}1XH}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IFr"IOr'l  
*/ z]%@r 7  
public void sort(int[] data) { W\Scak>  
for(int i=data.length/2;i>2;i/=2){ <4;, y*"n  
for(int j=0;j insertSort(data,j,i); e~)4v  
} mYJ8O$  
} 7;'UC','  
insertSort(data,0,1); (>u1O V  
} [#\OCdb*3  
6A5.n?B{  
/** !F~1+V>zP  
* @param data Mi(6HMA.SF  
* @param j NRG~ya >  
* @param i OA9 P"*  
*/ sVP\EF8PY  
private void insertSort(int[] data, int start, int inc) { a9^})By&  
int temp; Yyd}>+|<,  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Cpd>xXZz&S  
} : Gi8Jo  
} /{8Y,pZbu  
} af6<w.i  
mM/#(Ghl  
} <=%[.. (S  
rttKj{7E  
快速排序: .^F&6'h1H  
I;_T_m4.q  
package org.rut.util.algorithm.support; RYC%;h  
OraT$lV)_  
import org.rut.util.algorithm.SortUtil; 0]DX KI  
r/ATZAgHP  
/** q\!"FDOl4  
* @author treeroot +J|LfXgB  
* @since 2006-2-2 W}D[9zo/  
* @version 1.0 =|$U`~YB  
*/ \?e2qu/ C  
public class QuickSort implements SortUtil.Sort{ Fv/{)H<:y  
a>8] +@  
/* (non-Javadoc) G&wYV[Ln  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p.4Sgeh#  
*/ ;*Y+.?>a  
public void sort(int[] data) { *)\y52z  
quickSort(data,0,data.length-1); O7Jp ;  
} ^Vh^Z)gGi  
private void quickSort(int[] data,int i,int j){ si]MQ\i+  
int pivotIndex=(i+j)/2; mpDxJk!   
file://swap y\iECdPU  
SortUtil.swap(data,pivotIndex,j); h= YTgJ  
J$jLGy&'  
int k=partition(data,i-1,j,data[j]); id`9,IJx  
SortUtil.swap(data,k,j); #gf0*:p  
if((k-i)>1) quickSort(data,i,k-1); =-P<v2|e  
if((j-k)>1) quickSort(data,k+1,j); E){ODyk  
V*%><r  
} NgxJz ]b  
/** \Z~@/OVc  
* @param data >K%+h)%kI  
* @param i y?}<SnjP:  
* @param j gK *=T  
* @return 9Z 6  
*/ vHPsHy7y  
private int partition(int[] data, int l, int r,int pivot) { =7~;*Ts  
do{ K"Irg.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); a*_" nI&lr  
SortUtil.swap(data,l,r); &)!N5Veb  
} 9I1`*0A  
while(l SortUtil.swap(data,l,r); KAr5>^<zw  
return l; {FN4BC`3+  
} jR3mV  
5]3Mj*u\  
} hx~rq `{  
-3y $j+  
改进后的快速排序: \:Hh'-77q  
U:aaa  
package org.rut.util.algorithm.support; e&<=+\ul  
e:QH3|'y  
import org.rut.util.algorithm.SortUtil; leXdxpc  
4 `}6W>*R  
/** &D7Mv5i0@  
* @author treeroot /)Weg1b  
* @since 2006-2-2 E,A9+OKxJ  
* @version 1.0 8tT/w5  
*/ BL\H@D  
public class ImprovedQuickSort implements SortUtil.Sort { w (odgD  
J@q!N;eh|  
private static int MAX_STACK_SIZE=4096; -}>H3hr  
private static int THRESHOLD=10; <Um5w1  
/* (non-Javadoc) #<w2xR]:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R8j\CiV17  
*/ pf&SIG  
public void sort(int[] data) { ]rO/IuB  
int[] stack=new int[MAX_STACK_SIZE]; cMAY8$  
<ZoMKUuB  
int top=-1; 2$joM`j$  
int pivot;  1W>0  
int pivotIndex,l,r; @Wzr rCpj  
6?l|MU"Q.  
stack[++top]=0; Rap_1o9#\  
stack[++top]=data.length-1; MBFn s/  
~H626vT37  
while(top>0){ 1KI5tf>>p  
int j=stack[top--]; p xQh;w  
int i=stack[top--]; o5w =  
hh^_Z| 5  
pivotIndex=(i+j)/2; {MmK:C  
pivot=data[pivotIndex]; JjBlje  
YM +4:P2  
SortUtil.swap(data,pivotIndex,j); wg KM6?  
U0dhr;l  
file://partition k{+ Gv}Y  
l=i-1; DcNwtts  
r=j; wB%;O`Oh  
do{ ]Cc8[ZC  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $7&t`E)qY  
SortUtil.swap(data,l,r); S(5&%}QFQ  
} M}!E :bv'  
while(l SortUtil.swap(data,l,r); 6w $pL(  
SortUtil.swap(data,l,j); M{`uI8vD  
gib;> nuBK  
if((l-i)>THRESHOLD){ d)v'K5  
stack[++top]=i; \yA*)X+  
stack[++top]=l-1; )E=~ _`XO  
} w O*x0$  
if((j-l)>THRESHOLD){ rPoq~p[Y  
stack[++top]=l+1; ey) 8q.5  
stack[++top]=j; "I&,':O+  
} \t']Lf  
OC_i,  
} l=ZX9<3  
file://new InsertSort().sort(data); eRvnN>L  
insertSort(data); xSZ+6R|  
} eih~ SBSH  
/** 0^zp*u  
* @param data >`Zw0S  
*/ "|K D$CY  
private void insertSort(int[] data) { rsC^Re:*jr  
int temp; |j~{gfpSE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >iFi~)i_4y  
} >`D$Jz,  
} JAP4Vwj%j  
} J+0T8 ?A  
? EXYLG  
} |s*tRag  
8YwSaBwO  
归并排序: s N|7   
Sv|jR r'  
package org.rut.util.algorithm.support; PvqG5-L~W  
gC \^"m  
import org.rut.util.algorithm.SortUtil; G}p* oz~  
jp P'{mc  
/** s!F` 0=J^  
* @author treeroot Jx4"~ 4  
* @since 2006-2-2 <B3$ODGJp  
* @version 1.0 \XT~5N6  
*/ FW--|X]8   
public class MergeSort implements SortUtil.Sort{ ^%~ux0%^T  
f%5 s8)  
/* (non-Javadoc) 6F4OISy%3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [ nG@ 3n  
*/ kMY1Xb  
public void sort(int[] data) { !Xf7RT  
int[] temp=new int[data.length]; 5t-dvYgU  
mergeSort(data,temp,0,data.length-1); sDzlNMr?P+  
} /5 6sPl 7}  
EwH_k  
private void mergeSort(int[] data,int[] temp,int l,int r){ RYem(%jq  
int mid=(l+r)/2; z;d]=PT  
if(l==r) return ; K~ShV  
mergeSort(data,temp,l,mid); w,v~  
mergeSort(data,temp,mid+1,r); +1Ua`3dWN_  
for(int i=l;i<=r;i++){ i#W0  
temp=data; !%s&GD8&l  
} VwxLElV  
int i1=l; '2BE"e  
int i2=mid+1; iF1E 5{dH  
for(int cur=l;cur<=r;cur++){ :*MqYny&  
if(i1==mid+1) ^wm>\o;  
data[cur]=temp[i2++]; "o.g}Pv  
else if(i2>r) R#0Z  
data[cur]=temp[i1++]; ,Kw]V %xOb  
else if(temp[i1] data[cur]=temp[i1++]; N! N>/9  
else 6~_ TXy/  
data[cur]=temp[i2++]; P&0o~@`cL  
} N akSIGm  
} N 2\lBi  
?rG>SA>o  
} 7@*l2edXm+  
C+=8?u<  
改进后的归并排序: =Pu;wx9  
R<GnPN:c  
package org.rut.util.algorithm.support; |q:p^;x  
>|S&@<  
import org.rut.util.algorithm.SortUtil; D#I^;Xg0h  
CMI V"-  
/** Xi~%,~  
* @author treeroot [~[)C]-=  
* @since 2006-2-2 /\0 rRT  
* @version 1.0 8UahoNrSt  
*/ ^UEExj f  
public class ImprovedMergeSort implements SortUtil.Sort { dvl'Sq<  
g} /efE  
private static final int THRESHOLD = 10; L~u@n24  
)=vQrMyB  
/* f*IC ZM  
* (non-Javadoc) )*wM DM5q  
* c6@7>PM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &eqeQD6  
*/ +nj 2  
public void sort(int[] data) { ;`f14Fb  
int[] temp=new int[data.length]; TOe=6 Z5h  
mergeSort(data,temp,0,data.length-1); bz1+AJG  
} &# ?2zbZ  
$xK2M  
private void mergeSort(int[] data, int[] temp, int l, int r) { 3iI 4yg  
int i, j, k; Ac2,A>  
int mid = (l + r) / 2; ,@#))2<RK  
if (l == r) ruKm_j#J  
return; (1pR=  
if ((mid - l) >= THRESHOLD) ,_N+t:*#0  
mergeSort(data, temp, l, mid); nN]GO}  
else rEF0A&5  
insertSort(data, l, mid - l + 1); ]"2;x  
if ((r - mid) > THRESHOLD) s6k@WT?"^  
mergeSort(data, temp, mid + 1, r); 5C|Y-G  
else 5!b+^UR;z  
insertSort(data, mid + 1, r - mid); djk?;^8  
ye-EJDZN  
for (i = l; i <= mid; i++) { p" ;5J+?(  
temp = data; 4*D'zJsJ  
} `+\6;nM  
for (j = 1; j <= r - mid; j++) { ~v$1@DQ}  
temp[r - j + 1] = data[j + mid]; c&mLK1A6  
} wigs1  
int a = temp[l]; g5OKhL0u  
int b = temp[r]; 2&,jO+BqE@  
for (i = l, j = r, k = l; k <= r; k++) { (\8~W*ej"  
if (a < b) { ~\oF}7l$  
data[k] = temp[i++]; wqnHaWd*  
a = temp; d:X@zUR*)  
} else { C$+z1z.!  
data[k] = temp[j--]; Mjon++>Z  
b = temp[j]; <3)k M&.B  
} %A$5mi^  
} +v.<Fw2k#  
} vH?rln  
li37*  
/** mp:xR^5c  
* @param data Im g$D*BM  
* @param l #>ob1b|  
* @param i +L,V_z  
*/ 4aGVIQ  
private void insertSort(int[] data, int start, int len) { ;xl0J*r  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); RD|DHio%  
} _yRD*2 !;  
} cFZcBiw  
} qN"Q3mU^h*  
} ^ 7SE2Zi  
LG+2?+tE"  
堆排序: 0g`$Dap  
(uVL!%61k  
package org.rut.util.algorithm.support; sx n{uRF  
^?8/9 o  
import org.rut.util.algorithm.SortUtil; r,HIoeAKP  
*N&~Uq^  
/** sR4B/1'E  
* @author treeroot 6Qk[TL)t  
* @since 2006-2-2 ^m/7T wD  
* @version 1.0 agkGUK/  
*/ QnA~,z/ .w  
public class HeapSort implements SortUtil.Sort{ <Ej`zGhWz  
x']Fe7nv  
/* (non-Javadoc) z*UgRLKZD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pft-.1py  
*/ +# 3e<+!F  
public void sort(int[] data) { RcC5_@W  
MaxHeap h=new MaxHeap(); @h9QfJ_f  
h.init(data); L|L;<  
for(int i=0;i h.remove(); s1]m^,  
System.arraycopy(h.queue,1,data,0,data.length); PX*}.L *x  
} v5\5:b {/  
T#<Q[h=  
private static class MaxHeap{ !nsx!M  
wF9L<<&B  
void init(int[] data){ jU-aa+  
this.queue=new int[data.length+1]; edo+ o{^  
for(int i=0;i queue[++size]=data; PthgxB^  
fixUp(size); uBl&{$<  
} guG&3{&\s  
} =I aWf  
-xG6J.S  
private int size=0; &1Cs'  
&f}w&k2yj  
private int[] queue; U\u07^h[  
 T  5F)  
public int get() { <F8e?xy  
return queue[1];  o*Xfgc  
} n.rn+nuwv  
VEpcCK  
public void remove() { T(qTipq0  
SortUtil.swap(queue,1,size--); QWnGolN  
fixDown(1); q|:wzdmNZ  
} $H)Q UFyC  
file://fixdown *NG\3%}%|@  
private void fixDown(int k) { 2e-`V5{)b  
int j; v$D U q+  
while ((j = k << 1) <= size) { ?% [~J  
if (j < size %26amp;%26amp; queue[j] j++; }h=PW'M{  
if (queue[k]>queue[j]) file://不用交换 *`rfD*  
break; =7JSJ98  
SortUtil.swap(queue,j,k); m^0vux  
k = j; ] j8bv3  
} -pIz-*  
} haY]gmC  
private void fixUp(int k) { Aj|->Y  
while (k > 1) {  |iI dm  
int j = k >> 1; l -xc*lC  
if (queue[j]>queue[k]) t,Ka] /I  
break; "p*'HQ  
SortUtil.swap(queue,j,k); @ ?M\[qeF@  
k = j; 8}m J )9<7  
} tsJR:~  
} SAdE9L =d  
,f2oO?L}  
} jLVG=rOn  
a_V\[V{R=  
} tc0;Ake-&  
6e rYjq  
SortUtil: W-l+%T!  
v@soS1V!  
package org.rut.util.algorithm; ZX` \so,&,  
uQKQC?w  
import org.rut.util.algorithm.support.BubbleSort; 5, ,~k=  
import org.rut.util.algorithm.support.HeapSort; mLqqo2u  
import org.rut.util.algorithm.support.ImprovedMergeSort; P*A+k"DU1  
import org.rut.util.algorithm.support.ImprovedQuickSort; Lo%vG{yTr  
import org.rut.util.algorithm.support.InsertSort; U8 Zb&6  
import org.rut.util.algorithm.support.MergeSort; Vf&U`K  
import org.rut.util.algorithm.support.QuickSort; Jgv Mx  
import org.rut.util.algorithm.support.SelectionSort; ;ND$4$  
import org.rut.util.algorithm.support.ShellSort; ~c35Y9-5  
j*<J&/luYZ  
/** *,4rYb7I w  
* @author treeroot 7h}gIm7e"  
* @since 2006-2-2 q* p  
* @version 1.0 NgDhdOB  
*/ B=TUZ)  
public class SortUtil { M5ZH6X@5  
public final static int INSERT = 1; q4[}b-fF  
public final static int BUBBLE = 2; |${4sUR  
public final static int SELECTION = 3; Uv(R^50>  
public final static int SHELL = 4; S-S%IdL  
public final static int QUICK = 5; e'.BTt58Y  
public final static int IMPROVED_QUICK = 6; b^$`2m-?@f  
public final static int MERGE = 7; %xlpOR4  
public final static int IMPROVED_MERGE = 8; reN\| ?0{  
public final static int HEAP = 9; Gk*u^J(  
K<e #y!  
public static void sort(int[] data) { R%WY!I8C  
sort(data, IMPROVED_QUICK); {Nl?  
} o'#& =h$_  
private static String[] name={ R.rc h2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <R]m(  
}; ojy^ A  
<?KPyg2  
private static Sort[] impl=new Sort[]{ OJcS%-~  
new InsertSort(), Ic2?1<IZA  
new BubbleSort(), 1%+-}yo<  
new SelectionSort(), ']1n?K=A  
new ShellSort(), mH$tG $  
new QuickSort(), ['IH*gi  
new ImprovedQuickSort(), 1,wcf,  
new MergeSort(), @ b!]Jw  
new ImprovedMergeSort(), !q2zuxq!R  
new HeapSort() \ASt&'E  
}; OT 0c5x  
L]kBY2c  
public static String toString(int algorithm){ Z\nDR|3  
return name[algorithm-1]; 9r?Z'~,Za  
} VmqJMU>.  
.g8*K "  
public static void sort(int[] data, int algorithm) { 1B4Qj`:+0  
impl[algorithm-1].sort(data); hTtn /j  
} #d@wjQ0DW  
FH=2, "A  
public static interface Sort { Hh% !4_AMw  
public void sort(int[] data); {XOl &  
} \V>5)R n  
}p~2lOI  
public static void swap(int[] data, int i, int j) { NI s7v  
int temp = data; t8*Jdd^3Z/  
data = data[j]; e(t}$Q=  
data[j] = temp; }^&S^N 7  
} aD: #AmbJ  
} RrMEDMhk6  
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