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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。 {.qeVE{  
插入排序: Fy37I/#)r&  
AE? 0UVI  
package org.rut.util.algorithm.support; S#_g/3w  
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import org.rut.util.algorithm.SortUtil; T'B43Q  
/** 8Y?zxmwn]  
* @author treeroot W{:^P0l  
* @since 2006-2-2 ZmeSm& hQ_  
* @version 1.0 #{KYsDtvx  
*/ kk#%x#L[  
public class InsertSort implements SortUtil.Sort{ yIy'"BCxM  
wd*8w$\  
/* (non-Javadoc) CC&opC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;]!QLO.bs^  
*/ ?_)b[-N!  
public void sort(int[] data) { 1c8Nr&Jl  
int temp; 4o?_G[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9'+Eu)l:  
} =f0qih5.4  
} v6=pV4k9  
} IlN: NS  
xe?!UCUb@  
} w3l2u1u  
QL/I/EgqC  
冒泡排序: Io_bS+  
:Y wb  
package org.rut.util.algorithm.support; X<G"Ga L  
q[?xf3  
import org.rut.util.algorithm.SortUtil; h;" 9.  
TL u+5f  
/** H.ha}0 J  
* @author treeroot >D]g:t@v  
* @since 2006-2-2 eka<mq|W  
* @version 1.0 F(h jP  
*/ EPeKg{w  
public class BubbleSort implements SortUtil.Sort{ rnAQwm-8O%  
7slpj8  
/* (non-Javadoc) ri.}G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -sjyv/%_  
*/ 7b8+"5~  
public void sort(int[] data) { ^mwS6WH6  
int temp; 'Fq +\J#%  
for(int i=0;i for(int j=data.length-1;j>i;j--){ KXrZ:4bg  
if(data[j] SortUtil.swap(data,j,j-1); +/+>:  
} {$>Pg/  
} deLLqdZa  
} *jQ?(Tf  
} #jj+/>ZOi  
jouA ]E  
} j_3`J8WwF  
'G>$W+lT^  
选择排序: gOy;6\/  
xeNj@\jdC5  
package org.rut.util.algorithm.support; &9Kni/  
zgNzdO/B  
import org.rut.util.algorithm.SortUtil; J?#Xy9dz  
/@w w"dmqU  
/** qdnwaJ;&  
* @author treeroot U9"(jl/o  
* @since 2006-2-2 [s{ B vn  
* @version 1.0 'MgYSP<  
*/ b(_f{R7PY  
public class SelectionSort implements SortUtil.Sort { r03%+:  
q6'Q-e)  
/* "wy2u~  
* (non-Javadoc) oGRd ;hsF  
* Xj9\:M-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?}e^-//*i  
*/ 5 ) q_Aro  
public void sort(int[] data) { $ \+x7"pI  
int temp; s(T0lul  
for (int i = 0; i < data.length; i++) { )+Y"4?z~  
int lowIndex = i; 9.%t9RM^  
for (int j = data.length - 1; j > i; j--) { t"s$YB>}  
if (data[j] < data[lowIndex]) { 9Nw&l@  
lowIndex = j;  PI.Zd1r  
} IeZ9 "o h  
} n)0M1o#  
SortUtil.swap(data,i,lowIndex); |}?H$d  
} D0Mxl?S?  
} }Y^o("c(  
Aydpr_lp  
} [D+,I1u2h  
z/]]u.UP  
Shell排序: x2sKj"2?@  
q3v v^~  
package org.rut.util.algorithm.support; ?[uHRBR'  
bg!(B<!X  
import org.rut.util.algorithm.SortUtil; 2!6E~<~HC  
@j!(at4B  
/** "=w:LRw  
* @author treeroot A=0{}B#  
* @since 2006-2-2 P!"{-m'  
* @version 1.0 qm"SN<2S*  
*/ H C=ZcK'W  
public class ShellSort implements SortUtil.Sort{ ?YMBZ   
oI!"F=?&6  
/* (non-Javadoc) @ x .`z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }SC&6B?G  
*/ 0hhxTOp  
public void sort(int[] data) { Xt:$H6 y  
for(int i=data.length/2;i>2;i/=2){ Ims?  
for(int j=0;j insertSort(data,j,i); 5S8>y7knQ  
} o l41%q*  
} sE'c$H  
insertSort(data,0,1); $E&T6=Wn  
} ^.R!sQ  
Qu1&$oO  
/** g^Hf^%3xP  
* @param data I eJI-lo  
* @param j %Z4*;VwQ  
* @param i I`(53LCqo  
*/ sfipAM  
private void insertSort(int[] data, int start, int inc) { mI5J] hk  
int temp; Y6&v&dA;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);  =   
} bZ1*:k2  
} G^tazAEfo  
} NTD1QJ  
jC_'6sc`  
} _}Qtx/Cg  
E a&NJ]& g  
快速排序: >I0;MNX  
ZM})l9_o"  
package org.rut.util.algorithm.support; Zj!,3{jX^  
QmjE\TcK/  
import org.rut.util.algorithm.SortUtil; |,@D <  
.SjJG67OyA  
/** faDS!E' +  
* @author treeroot ,{!,%]bC  
* @since 2006-2-2 "o+?vx-  
* @version 1.0 41Z@_J|&  
*/ F$DA/{.D  
public class QuickSort implements SortUtil.Sort{ pHmqwB~|  
>zqaV@T  
/* (non-Javadoc) _\KFMe= PV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u{_,S3Aa  
*/ ?tY+P`S  
public void sort(int[] data) { }< H>9iJ:  
quickSort(data,0,data.length-1); {QM rgyQ E  
} dkz% Y]  
private void quickSort(int[] data,int i,int j){ IK\~0L;ozE  
int pivotIndex=(i+j)/2; g%l ,a3"  
file://swap |J,zU6t  
SortUtil.swap(data,pivotIndex,j); &RYdSXM  
{o5|(^l  
int k=partition(data,i-1,j,data[j]); ]CF-#q}'  
SortUtil.swap(data,k,j); F| eWHw?t  
if((k-i)>1) quickSort(data,i,k-1); 5aizWz  
if((j-k)>1) quickSort(data,k+1,j); jcJ 4?  
+Q u.86dH  
} {6H[[7i  
/** `=H*4I-"  
* @param data salC4z3  
* @param i ekvs3a^  
* @param j "G [Nb:,CR  
* @return ;:D-}t;  
*/ -y-}g[`  
private int partition(int[] data, int l, int r,int pivot) { _K9`o^g%PJ  
do{ ).;{'8Q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); w\acgQ^%e  
SortUtil.swap(data,l,r); HpEd$+Mz  
} E%bhd4$G  
while(l SortUtil.swap(data,l,r); ,gVVYH?qR  
return l; FuiR\"Ww  
} UON=7}=$&  
3W7^,ir  
} @4*:qj?  
j**[[  
改进后的快速排序: !b+4[ xky  
zbxW U]<S?  
package org.rut.util.algorithm.support; =@Oo3*>  
F,Q;sq  
import org.rut.util.algorithm.SortUtil; +r3)\L{U  
ML_VD*t9  
/** Ei_ ~ K';  
* @author treeroot }_'5Vb_  
* @since 2006-2-2 w w^\_KGu7  
* @version 1.0 6Cj7 =|L7  
*/ wtek5C^  
public class ImprovedQuickSort implements SortUtil.Sort { ^xa, r#N:V  
n{;Q"\*Sg  
private static int MAX_STACK_SIZE=4096; T#Z&*  
private static int THRESHOLD=10; }*6BaB  
/* (non-Javadoc) 49MEGl;K0\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -'$ob~*  
*/ 'GJB9i+a^  
public void sort(int[] data) { )$n%4 :  
int[] stack=new int[MAX_STACK_SIZE]; TN0KS]^A3  
cX-M9Cz  
int top=-1; +X/a+y-  
int pivot; yiZtG#6K{  
int pivotIndex,l,r; ^Gk`n  
}/a%-07R  
stack[++top]=0; a!$kKOK  
stack[++top]=data.length-1; yNns6  
`*8}q!.  
while(top>0){ iqDyE*a  
int j=stack[top--]; W"Ip]LJ  
int i=stack[top--]; bCw{9El!K4  
kG>jb!e@(  
pivotIndex=(i+j)/2; |C4fg6XDL  
pivot=data[pivotIndex]; 4EqThvI{  
x?wvS]EBg  
SortUtil.swap(data,pivotIndex,j); z)3TB&;  
:lB*kmg  
file://partition ^~H}N$W"-q  
l=i-1; {zb'Z Yz  
r=j; '3>;8(s l  
do{ z(\a JW  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~tp]a]yV  
SortUtil.swap(data,l,r); LIID(s!bX  
} Q VTL}AT2:  
while(l SortUtil.swap(data,l,r); Yqs=jTq`{  
SortUtil.swap(data,l,j); 4zMvHe  
Z 8rD9 k$6  
if((l-i)>THRESHOLD){ RCR= W6  
stack[++top]=i; 60+zoL'  
stack[++top]=l-1; A%8 Q}s$<s  
} D^[l~K  
if((j-l)>THRESHOLD){ O)dnr8*  
stack[++top]=l+1; cu/"=]D  
stack[++top]=j; xk,Uf,,>  
} b9j}QK  
GeR#B;{  
} hZ45i?%  
file://new InsertSort().sort(data); V"#0\ |]m  
insertSort(data); vvxxwZa=O  
} =!\Nh,\eQ  
/** <j'K7We/tP  
* @param data D :@W*,  
*/ X?_rD'3  
private void insertSort(int[] data) { "|3I|#s  
int temp; 5eTA]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E22o-nI?1  
} -N' (2'  
} UPfE\KN+p#  
} HJl?@& l/  
E'WXi!>7p  
} o-8{C0>:  
wC{sP"D  
归并排序: iV{_?f1jo  
oKn$g[,SJh  
package org.rut.util.algorithm.support; s$#64"F  
9~UR(Ts}l  
import org.rut.util.algorithm.SortUtil; l+Wux$6U  
[(n5-#1S  
/** ko}& X=  
* @author treeroot ='"Yj  
* @since 2006-2-2 *ra)u-  
* @version 1.0 )w].m  
*/ BwHJr(n  
public class MergeSort implements SortUtil.Sort{ F8w7N$/V",  
B!&5*f}*  
/* (non-Javadoc) IOFXkpK R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VN)WBv  
*/ NO*, }aeG  
public void sort(int[] data) { goR_\b SU  
int[] temp=new int[data.length]; #4AU&UM+i  
mergeSort(data,temp,0,data.length-1); F+*E}QpM  
} >v,X:B?+FL  
?6 2zv[#  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^JY {<   
int mid=(l+r)/2; RC7F/|w.z  
if(l==r) return ; :cA P{rSe  
mergeSort(data,temp,l,mid); EP38Ho=[  
mergeSort(data,temp,mid+1,r); t]&.'n,  
for(int i=l;i<=r;i++){ Oem1=QpaC  
temp=data; Sj ovL@X  
} 8ve-g\C8 H  
int i1=l; xI<l1@  
int i2=mid+1; 0s`6d;  
for(int cur=l;cur<=r;cur++){ S\Z*7j3;M  
if(i1==mid+1) 3Y P! B=  
data[cur]=temp[i2++]; w^L`"  
else if(i2>r) 0@_8JB ?E  
data[cur]=temp[i1++]; XB'rh F8rl  
else if(temp[i1] data[cur]=temp[i1++]; }6l:'nW  
else TY]0aw2]|7  
data[cur]=temp[i2++]; 4s m [y8  
} /,I?"&FWc  
} "pt[Nm76)8  
I e!KIU  
} ZvuY] =^3  
$idToOkw  
改进后的归并排序: :/6:&7s  
.;?ha'  
package org.rut.util.algorithm.support; R.|h<bur  
A#$l;M.3R  
import org.rut.util.algorithm.SortUtil; +!@xH];  
tic3a1  
/** G,A?yM'Vw  
* @author treeroot C=c&.-Nb9  
* @since 2006-2-2 ]oix))'n  
* @version 1.0 ->|eMV'd  
*/ em'3 8L|(  
public class ImprovedMergeSort implements SortUtil.Sort { fe4/[S{a   
Il/`#b@h  
private static final int THRESHOLD = 10; !o'a]8  
]@SEOc@ j  
/* wB8548C}-  
* (non-Javadoc) P3bRv^  
* =2Ju)!%wr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) je\]j-0$u  
*/ mC ]Krnx  
public void sort(int[] data) { f:q2JgX  
int[] temp=new int[data.length]; (|W6p%(  
mergeSort(data,temp,0,data.length-1); !/2kJOSp  
} #~*v*F~3  
BI2'NN\  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,DKW_F|  
int i, j, k; s/?(G L+Ae  
int mid = (l + r) / 2; U&kdR+dB  
if (l == r) <O9WCl  
return; _z^&zuO  
if ((mid - l) >= THRESHOLD) ;).QhHeg>  
mergeSort(data, temp, l, mid); o) eW5s,6  
else R{4[.  
insertSort(data, l, mid - l + 1); sN[q. M?  
if ((r - mid) > THRESHOLD) C/"Wh=h6  
mergeSort(data, temp, mid + 1, r); i/N68  
else DKQQZ` PF  
insertSort(data, mid + 1, r - mid); -J!k|GK#MX  
qB3& F pgW  
for (i = l; i <= mid; i++) { S r7EcT-  
temp = data; hEFn>  
} >48)@sS  
for (j = 1; j <= r - mid; j++) { w RTzpG4  
temp[r - j + 1] = data[j + mid]; A- hWg;  
} ELV$!f|u  
int a = temp[l]; >*w(YB]/$V  
int b = temp[r]; am WIA`n=  
for (i = l, j = r, k = l; k <= r; k++) { 9hwn,=Vh)  
if (a < b) { q|;+Wp?  
data[k] = temp[i++]; =uR[Jewa  
a = temp; /Bnh%6#ab  
} else { QEL3b4Vm  
data[k] = temp[j--]; M\9p-%"L  
b = temp[j]; FCr>$  
} z2V_nkI  
} bO{wQ1)Z_  
} $ "^yoL  
l< |)LD q~  
/** Ps MCs|*  
* @param data .7zdA IKW  
* @param l _EZrZB  
* @param i Jo ]8?U(^  
*/ Jqi^Z*PuX  
private void insertSort(int[] data, int start, int len) { U@?Ro enn  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \\Huk*Jn{  
} I%G6V a@  
} T%:W6fH7  
} \xaK?_hv  
} 3>sA_  
G&*2h2,]  
堆排序: E^jb#9\R  
AUAJMS!m  
package org.rut.util.algorithm.support; D7x"P-ie  
6ax|EMw  
import org.rut.util.algorithm.SortUtil; O%kX=6  
/e}NZo{)g  
/** ;/Dp  
* @author treeroot 4h~o>(Sq  
* @since 2006-2-2 pTJJ.#$CEF  
* @version 1.0 c`&<"Us  
*/ Fn!kest  
public class HeapSort implements SortUtil.Sort{ paW7.~3 R  
<Cw)S8t  
/* (non-Javadoc) e[7n`ka '  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B@Q Ate7   
*/ poYO  
public void sort(int[] data) { V}kZowWD  
MaxHeap h=new MaxHeap(); x;Jy-hMNl  
h.init(data); ^i^/d#  
for(int i=0;i h.remove(); =X11x)]F9  
System.arraycopy(h.queue,1,data,0,data.length); y  ZsC>  
} /r Hd9^Y  
~sSlfQWMzy  
private static class MaxHeap{ PSQ5/l?\>  
tQ:)j^\  
void init(int[] data){ -Ug  
this.queue=new int[data.length+1]; l(@UpV-  
for(int i=0;i queue[++size]=data; y#Ao6Od6  
fixUp(size); !$x9s'D  
} Xj&fWu A  
} q]Cmaf(  
io$!z=W  
private int size=0;  T^ ^o  
>?q()>l  
private int[] queue; uf (`I  
Wej8YF@  
public int get() { eEIa=MB*  
return queue[1]; DDT)l+:XP  
} Ax4nx!W,   
8=H!&+aGh  
public void remove() { s HSZIkB-r  
SortUtil.swap(queue,1,size--); H\7Qf8s|{  
fixDown(1); t%wC~1  
} 1;R1Fj&  
file://fixdown F{a--  
private void fixDown(int k) { +v3@WdLcD  
int j; C{<qc,!4  
while ((j = k << 1) <= size) { @54D<Lj  
if (j < size %26amp;%26amp; queue[j] j++; ON|Bpt2Qp  
if (queue[k]>queue[j]) file://不用交换 18pi3i[  
break; VQO6!ToKY  
SortUtil.swap(queue,j,k); V^WR(Q}  
k = j; n0:Y* Op  
} G%w hOIFRq  
}  g-MaP  
private void fixUp(int k) { ({g7{tUy^H  
while (k > 1) { o/bmS57  
int j = k >> 1; GtRc7,  
if (queue[j]>queue[k]) #wL}4VN  
break; j'#M'W3@  
SortUtil.swap(queue,j,k); Z> jk\[  
k = j; J fFOU!F\  
} )54;YK  
} ORhe?E]  
&)@|WLW  
} mrR~[533j  
48JD >=@7  
} V )CS,w  
(a0q*iC%  
SortUtil: I^*&u,  
XS5*=hv:  
package org.rut.util.algorithm; I;]Q}SUsm  
\M-}(>Pfk  
import org.rut.util.algorithm.support.BubbleSort; u/3[6MIp  
import org.rut.util.algorithm.support.HeapSort; #%t&f"j2  
import org.rut.util.algorithm.support.ImprovedMergeSort; O`_!G`E  
import org.rut.util.algorithm.support.ImprovedQuickSort; AV\6K;~  
import org.rut.util.algorithm.support.InsertSort; Gj^JpG  
import org.rut.util.algorithm.support.MergeSort; t{n|!T&  
import org.rut.util.algorithm.support.QuickSort; <u2rb6  
import org.rut.util.algorithm.support.SelectionSort; m%Ah]x;  
import org.rut.util.algorithm.support.ShellSort; {//;GC*  
bkfwsYZx  
/** TxL;qZRY ^  
* @author treeroot gPs%v`y)*D  
* @since 2006-2-2 B]Vnu7  
* @version 1.0 UV}\#86!  
*/ W<<{}'Db/#  
public class SortUtil { l<fZt#T  
public final static int INSERT = 1; n]$50_@  
public final static int BUBBLE = 2; 7#K%Bo2pG  
public final static int SELECTION = 3; 4FK|y&p4r  
public final static int SHELL = 4; 9aYDi)  
public final static int QUICK = 5; HAa2q=  
public final static int IMPROVED_QUICK = 6; R%)ZhG*  
public final static int MERGE = 7; CG!/Lbd  
public final static int IMPROVED_MERGE = 8; tmM8YN|  
public final static int HEAP = 9; Jj=0{(X  
l AF/O5b  
public static void sort(int[] data) { ATq)8Rm\  
sort(data, IMPROVED_QUICK); @]$qJFXx  
} Wez"E2J`  
private static String[] name={ Q2[@yRY/z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 29P vPR6  
}; @* a'B=7  
N<bNJD}  
private static Sort[] impl=new Sort[]{ L`E^BuP/  
new InsertSort(), 8SmtEV[b3  
new BubbleSort(), (x7AV$N  
new SelectionSort(), @.T w*t  
new ShellSort(), *Jd,8B/hC  
new QuickSort(), mIu-  
new ImprovedQuickSort(), Fa]fSqy@;  
new MergeSort(), vwZd@%BO  
new ImprovedMergeSort(), {)^P_zha[9  
new HeapSort() Sb_T _m  
}; @bu5{b+8  
v/%q*6@  
public static String toString(int algorithm){ 2I!STP{!l  
return name[algorithm-1]; x!rHkuH~  
} u@!iByVAg  
YLc 2:9  
public static void sort(int[] data, int algorithm) { I{Pny/d`  
impl[algorithm-1].sort(data); " bHeNWZ  
} cI#2MjL  
IEb"tsel  
public static interface Sort { MZ_+doN  
public void sort(int[] data); =}@m$g  
} QInow2/u  
:Uu Py|>  
public static void swap(int[] data, int i, int j) { 79J@`  
int temp = data; D}Jhg`9  
data = data[j]; F">>,Oc)U"  
data[j] = temp; @uc N|r}=R  
} U'i L|JRF  
} USVM' ~p I  
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