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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。 EeS VY  
插入排序: WR4\dsgCU  
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package org.rut.util.algorithm.support; }9(:W</}  
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import org.rut.util.algorithm.SortUtil;  =u Ieur  
/** [+4--#&{  
* @author treeroot \g\,  
* @since 2006-2-2 _cXLQ)-  
* @version 1.0 5TcirVO82  
*/ rfc;   
public class InsertSort implements SortUtil.Sort{ Fu#mMn0c  
YW)& IA2  
/* (non-Javadoc) _#6ekl|%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fk:oCPo  
*/ -<WQ>mrB&  
public void sort(int[] data) { ]!04L}hy|P  
int temp; @K.[;-;g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iKuSk~  
} rz3!0P!"K  
} 0 6S-3bis  
} - +=+W  
.jC-&(R +  
} X3;|h93.a  
RzLbPSTQ  
冒泡排序: Y;WHjW(K  
hM @F|t3  
package org.rut.util.algorithm.support; jB!Q8#&Q  
C@L8,Kj ~.  
import org.rut.util.algorithm.SortUtil;  7ehs+GI  
d*xKq"+ &E  
/** hZ@Wl6FG;  
* @author treeroot nWAx!0G  
* @since 2006-2-2 7 -hSso.'  
* @version 1.0 Z6I^HG{:  
*/ RwC1C(ZP  
public class BubbleSort implements SortUtil.Sort{ O7z -4r  
gLef6q{}  
/* (non-Javadoc) qm1;^j&y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8'B   
*/ m# ]VdO'f  
public void sort(int[] data) { /HmD/E\  
int temp; Ph*tZrd*#  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,!?&LdPt>  
if(data[j] SortUtil.swap(data,j,j-1); 3,cZ*4('d  
} K2glkGK  
} `|i[*+WC  
} j7|r^  
} :3# t;  
_ ecKX</Q  
} Gdd lB2L)x  
qUY QN2wG  
选择排序: M"eiKX  
{Y! -]_ 5  
package org.rut.util.algorithm.support; |3?qL  
PZQ n]lbak  
import org.rut.util.algorithm.SortUtil; > T,^n {_v  
 d!%:Ok  
/** W^Jh'^E  
* @author treeroot *LbRLwt  
* @since 2006-2-2 bF'^eR  
* @version 1.0 lth t'|  
*/ i-'rS/R  
public class SelectionSort implements SortUtil.Sort { JR1/\F<}  
MXbt`]`_  
/* U!L<v!$  
* (non-Javadoc) ]R8}cbtU  
* 4%TY` II  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jp<Y2-  
*/ p xrd D7  
public void sort(int[] data) { .r/6BDE"  
int temp; %Bo/vB'  
for (int i = 0; i < data.length; i++) { piE9qXn  
int lowIndex = i; D_%y&p?<Ls  
for (int j = data.length - 1; j > i; j--) { cCd2f>EHw  
if (data[j] < data[lowIndex]) { ^h z4IZ^  
lowIndex = j; 821@qr|`e  
} ]:B|_| H  
} .R/`Y)4  
SortUtil.swap(data,i,lowIndex); }\E2Z[  
} ~G!>2 +L  
} _h4{Sx  
`Trpv$   
} kETu@la}  
}5Yd:%u5  
Shell排序: fdIk{o  
p.9VyM  
package org.rut.util.algorithm.support; ^[{\ZX  
_VFxzM9f  
import org.rut.util.algorithm.SortUtil; ad).X:Qs  
J;pn5k~3  
/** `2S G{5o;  
* @author treeroot  }xcEWC\  
* @since 2006-2-2 E"D+CD0  
* @version 1.0 !JtVp&?  
*/ Aen)r@Y:  
public class ShellSort implements SortUtil.Sort{ d^"<Tz!  
?:(BkY,K5  
/* (non-Javadoc) Z }(,OZh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +~Ni7Dp]  
*/ lLy^@s  
public void sort(int[] data) { {umdW x.*  
for(int i=data.length/2;i>2;i/=2){ )K2,h5zU  
for(int j=0;j insertSort(data,j,i); a $pxt!6  
} +;7Rz_.6f  
} Fv \yhR  
insertSort(data,0,1); jX5lwP Q|F  
} 6@`Y6>}$_  
.80^c  
/** tSK{Abw1B  
* @param data |A".Mo_5  
* @param j }Wf\\  
* @param i ,/n<Qg"`  
*/ rWKc,A[  
private void insertSort(int[] data, int start, int inc) { q.6$-w  
int temp; 5a1)`2V2M  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1df }gG  
} ]K'iCYY  
} trL:qD+{(  
} y#HDJ=2  
F%!ZHE7  
} X(F 2 5  
%\8E{M:  
快速排序: {7!WtH;-  
$ BV4i$  
package org.rut.util.algorithm.support; tZR%s  
Ie(vTP1Cj  
import org.rut.util.algorithm.SortUtil; Rckqr7q  
}ie\-V  
/** `~'yy q  
* @author treeroot 4:Adn?"  
* @since 2006-2-2 Y>*{(QD  
* @version 1.0 .K>r ao'  
*/ 4J3cQ;z  
public class QuickSort implements SortUtil.Sort{ i;!#:JX  
)0Av:eF-+  
/* (non-Javadoc) EAYx+zI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #w3cImgp2  
*/ _MfXN$I?}  
public void sort(int[] data) { ~3bn?'`  
quickSort(data,0,data.length-1); dLQV>oF  
} HY[eo/nM1d  
private void quickSort(int[] data,int i,int j){ U  JO  
int pivotIndex=(i+j)/2; "|&xUWJ!)  
file://swap B\BxF6 y  
SortUtil.swap(data,pivotIndex,j); ~Ti  
.iFd  
int k=partition(data,i-1,j,data[j]); ajFSbi)l  
SortUtil.swap(data,k,j); <t[WHDO`  
if((k-i)>1) quickSort(data,i,k-1); cl s-x@ Kd  
if((j-k)>1) quickSort(data,k+1,j); l!z0lh- J  
H6Q1r[(B  
} _bp9UJ  
/** 3(|8gWQ  
* @param data p-QD(+@M  
* @param i i}mvKV?!|1  
* @param j <a_Q1 l  
* @return pq0F!XmU  
*/ h\GlyH~  
private int partition(int[] data, int l, int r,int pivot) { :n36}VG|  
do{ 5N=QS1<$5  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gKK*` L~  
SortUtil.swap(data,l,r); {VOLUC o 4  
} Dk&@AjJga  
while(l SortUtil.swap(data,l,r); Z6G>j  
return l; Z~O1$,Z  
} Gb]t%\  
0_7A <   
} fv?vO2nj  
M7rVH\:[-  
改进后的快速排序: J)R;NYl  
-A}U^-'a}  
package org.rut.util.algorithm.support; $ K>.|\  
Q)}_S@v|%  
import org.rut.util.algorithm.SortUtil; *^]Hqf(`  
S i[:l  
/** $J8?!Xg  
* @author treeroot ;E? Z<3{  
* @since 2006-2-2 gp Aqz Y  
* @version 1.0 NijvFT$V1  
*/ 9/N=7<$  
public class ImprovedQuickSort implements SortUtil.Sort { 7VWq8FH`  
"PO>@tY  
private static int MAX_STACK_SIZE=4096; |7G +O+j  
private static int THRESHOLD=10; uh`W} n  
/* (non-Javadoc) ,r<!30~f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tz{W69k+  
*/ ~s_n\r&23  
public void sort(int[] data) { gWcl@|I;\  
int[] stack=new int[MAX_STACK_SIZE]; 4RgEN!d?H  
{<XPE:1>Y  
int top=-1; s?h=%; T[  
int pivot; <[9{Lg*D  
int pivotIndex,l,r; N;4tvWI  
(+Ia:D  
stack[++top]=0; sB|>\O#-  
stack[++top]=data.length-1; 8*O]  
_&0_@  
while(top>0){ >^vyp!  
int j=stack[top--]; 4{!7T  
int i=stack[top--]; L`v7|!X  
q'u^v PO  
pivotIndex=(i+j)/2; y%* hHnGd  
pivot=data[pivotIndex]; *_Y{wNF *  
:q6j{C(  
SortUtil.swap(data,pivotIndex,j); F/BB]gUB  
KjK.Sv{N  
file://partition O>P792)  
l=i-1; i"eUacBz/-  
r=j; ILsw'  
do{ sC ,[CN:b  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #=~n>qn]  
SortUtil.swap(data,l,r); 1:2 t4}  
} tqdw y.  
while(l SortUtil.swap(data,l,r); 6I,^4U  
SortUtil.swap(data,l,j); !JZ)6mtlr  
4.?tP7UE  
if((l-i)>THRESHOLD){ tPDd~fOk  
stack[++top]=i; ZaxBr  
stack[++top]=l-1; +&t`"lRl&  
} /%W&zd=%#  
if((j-l)>THRESHOLD){ QFn .<@  
stack[++top]=l+1; 9 F"2$;  
stack[++top]=j; R*m=V{iu`  
} <B,z)c  
ZbS* zKEW  
} eUa2"=M  
file://new InsertSort().sort(data); /, G-1E  
insertSort(data); u;{,,ct  
} JA .J~3  
/** KW&5&~)2  
* @param data KHK|Zu#k '  
*/ Q& p'\6~  
private void insertSort(int[] data) { 0taopDi ;d  
int temp; <+0TN]?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Knd2s~S  
} Kwc~\k  
} nq9|cS%-  
} 58T<~u7  
37j-FLbW  
} (]*otVJ  
B?;!j)FUtt  
归并排序: d(LX;sq?  
@@&([f  
package org.rut.util.algorithm.support; hrLPy V:  
l$j/Ye]  
import org.rut.util.algorithm.SortUtil;  3+[R !  
IaDN[:SX  
/** ;>#YOxPl  
* @author treeroot KJ/ *BBf  
* @since 2006-2-2 U_1syaY!  
* @version 1.0 jrOqspv   
*/ ,U-aZ  
public class MergeSort implements SortUtil.Sort{ o;d><  
j?5s/  
/* (non-Javadoc) VeLuL:4I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g\Ck!KJ/y  
*/ ;@I4[4ph}  
public void sort(int[] data) { @vy {Q7aM  
int[] temp=new int[data.length]; jJ(()EJ  
mergeSort(data,temp,0,data.length-1); ]VarO'  
} ,-55*Rbi  
?b}d"QsmU  
private void mergeSort(int[] data,int[] temp,int l,int r){ p2(U'x c  
int mid=(l+r)/2; 38I.1p9  
if(l==r) return ; "4 Lt:o4x  
mergeSort(data,temp,l,mid); `i'72\(  
mergeSort(data,temp,mid+1,r); 9GH11B_A  
for(int i=l;i<=r;i++){ b.Yl0Y  
temp=data; WAzYnl'p  
} HAkEJgV  
int i1=l; FCk4[qOp7  
int i2=mid+1; sYt\3/yL'  
for(int cur=l;cur<=r;cur++){ V3^=Mj2"  
if(i1==mid+1) J\WUBt-M  
data[cur]=temp[i2++]; dKKh^D`~  
else if(i2>r) fR:BF47  
data[cur]=temp[i1++]; ^rHG#^hA  
else if(temp[i1] data[cur]=temp[i1++]; 4| 6<nk_  
else WcG!6.U>  
data[cur]=temp[i2++]; 7K*\F}2)q  
} eU[f6OGqC  
} aJQx"6 c?  
p "J^  
} \R m2c8Z2  
}qqE2;{ND  
改进后的归并排序: hI&ugdf  
1XwW4cZ>:  
package org.rut.util.algorithm.support; 5BztOYn,  
$p(,Qz(.8  
import org.rut.util.algorithm.SortUtil; <c,/+ lQ^  
{*X8!P7C  
/** Qh 3V[br  
* @author treeroot k|ol+ 9Z  
* @since 2006-2-2 \Mi] !b|8  
* @version 1.0 h{$mL#J  
*/ IQ&o%   
public class ImprovedMergeSort implements SortUtil.Sort { X2 Z E9b  
jJX-S  
private static final int THRESHOLD = 10; Hy?+p{{G  
_fVC\18T  
/* VcLB0T7m\  
* (non-Javadoc) v7V.,^6+  
* ?gq',F FDq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r_5k$u(  
*/ 3Zr'Mn  
public void sort(int[] data) { 3eqVY0q  
int[] temp=new int[data.length]; r]C`#  
mergeSort(data,temp,0,data.length-1); @V9qbr= Z  
} OG M9e!  
__FhuP P  
private void mergeSort(int[] data, int[] temp, int l, int r) { A7/ R5p  
int i, j, k; ^kS44pr\Q  
int mid = (l + r) / 2; 6{XdLI  
if (l == r) $'9b,- e  
return; *\UxdL 22  
if ((mid - l) >= THRESHOLD) dHcGe{T^(  
mergeSort(data, temp, l, mid); NXwlRMbo  
else Gk.;<d  
insertSort(data, l, mid - l + 1); # j=r  
if ((r - mid) > THRESHOLD) L5"|RI}  
mergeSort(data, temp, mid + 1, r); Fu K(SP3  
else ]^='aQ  
insertSort(data, mid + 1, r - mid); w|"cf{$^x  
=,*4:TU  
for (i = l; i <= mid; i++) { q=o"] 6  
temp = data; QQd%V#M?  
} W|go*+`W%  
for (j = 1; j <= r - mid; j++) { t`"]"Re  
temp[r - j + 1] = data[j + mid]; +O@v|}9"w3  
} bt$+l[U^J  
int a = temp[l]; JG2)-x;9  
int b = temp[r]; lL*k!lNs  
for (i = l, j = r, k = l; k <= r; k++) { 8gA:s`ofJ  
if (a < b) { dM A"% R  
data[k] = temp[i++]; n ..9F$a  
a = temp; N"i'[!H%  
} else { w85PRruW  
data[k] = temp[j--]; nly`\0C  
b = temp[j]; -?8;-h, h  
} q><E?  
} 'qosw:P  
}  c`'2  
lgxG:zAC  
/** EW* 's(  
* @param data KUC (n!  
* @param l Q k`yK|(0=  
* @param i 7p}.r J54  
*/ fbbk;Rq.'3  
private void insertSort(int[] data, int start, int len) { hM!D6: t  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0 ]v:Ix  
} ZaCUc Px  
} YpFh_Zr[  
} @K 8sNPK  
} !l7eB@O  
k^|P8v+"D  
堆排序: zc QFIP  
M PMa  
package org.rut.util.algorithm.support; =YPvh]][  
~W q[H  
import org.rut.util.algorithm.SortUtil; k+^-;=u 6<  
KrQ8//Ih  
/** G22= 8V  
* @author treeroot /f!CX|U  
* @since 2006-2-2 _,h hO  
* @version 1.0 _)q,:g~fu  
*/ JrF\7*rh9  
public class HeapSort implements SortUtil.Sort{ ZJotg *I  
qb+vptg@I  
/* (non-Javadoc) p]d3F^*i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c k=  
*/ &n% 3rC5{  
public void sort(int[] data) { r5!I|E  
MaxHeap h=new MaxHeap(); l<7)uO^8  
h.init(data); wo;`D  
for(int i=0;i h.remove(); N?d4Pu1m  
System.arraycopy(h.queue,1,data,0,data.length); Nl_Sgyx,\  
} K0xZZ`  
0&1!9-(d  
private static class MaxHeap{ Vi~9[&.E\!  
4Fr0/="H  
void init(int[] data){ X@u-n_  
this.queue=new int[data.length+1]; ;J3az`  
for(int i=0;i queue[++size]=data; f#:7$:{F1  
fixUp(size); D.2HM  
} Ly?yW S-x  
} ;C8'7  
F=C8U$'S  
private int size=0; (ilU<Ht  
_ i )Z8#  
private int[] queue; !$'s?rnh  
[@@Ovv  
public int get() { |C9qM  
return queue[1]; xN\ PQ,J  
} * pN,@ZV$  
,*fvA?  
public void remove() { ^F<[5e)M  
SortUtil.swap(queue,1,size--); ".z~c%'  
fixDown(1); DiF=<} >x  
} ,4 ftQJ  
file://fixdown ;b:Ct<  
private void fixDown(int k) { 8H_3.MK  
int j; ;8UHnhk_O  
while ((j = k << 1) <= size) { t@-:e^ v  
if (j < size %26amp;%26amp; queue[j] j++; y 1fl=i  
if (queue[k]>queue[j]) file://不用交换 O$B]#]L+  
break; rm*Jo|eH`  
SortUtil.swap(queue,j,k); jyPY]r  
k = j; MT" 2^&R  
} K,YKU? z6  
} )J+vmY~&  
private void fixUp(int k) { Au'[|Pr r  
while (k > 1) { T`46\KkN  
int j = k >> 1; UO}Kk*  
if (queue[j]>queue[k]) \HF h?3-g  
break; F9]j{'#  
SortUtil.swap(queue,j,k); T"-HBwl  
k = j; 6C>x,kU  
} :g/HN9  
} "V:B-q  
s%`o  
} b w5|gmO  
a  1bu  
} NL))!Pi  
MId\ dFu  
SortUtil: 6sl*Ko[  
Dm6WSp1|b  
package org.rut.util.algorithm; r?d601(fa  
Gk2\B]{  
import org.rut.util.algorithm.support.BubbleSort; UT$G?D";M  
import org.rut.util.algorithm.support.HeapSort; >L?)f3_a  
import org.rut.util.algorithm.support.ImprovedMergeSort; f+Nq?GvwBQ  
import org.rut.util.algorithm.support.ImprovedQuickSort; yB(^t`)}N  
import org.rut.util.algorithm.support.InsertSort; XXacWdh \  
import org.rut.util.algorithm.support.MergeSort; +r9:n(VP  
import org.rut.util.algorithm.support.QuickSort; %VsuG A  
import org.rut.util.algorithm.support.SelectionSort; zLue j'  
import org.rut.util.algorithm.support.ShellSort; J=W"FEXTL7  
?f[#O&#  
/** 0*W=u-|s6  
* @author treeroot ~h?zK 1  
* @since 2006-2-2 6w<jg/5t  
* @version 1.0 o <8L, u(U  
*/ -uN5 DJSW  
public class SortUtil { 71nXROB  
public final static int INSERT = 1; <9YRSE [Ed  
public final static int BUBBLE = 2; ~:Dr]kt  
public final static int SELECTION = 3; 5[[4A]#T  
public final static int SHELL = 4; N54U [sy  
public final static int QUICK = 5; ^,'!j/w5  
public final static int IMPROVED_QUICK = 6; U,Nf&g  
public final static int MERGE = 7; )(b]-  )  
public final static int IMPROVED_MERGE = 8; K[PIw}V$?:  
public final static int HEAP = 9; bl(rCbj(w  
YmFJlMK  
public static void sort(int[] data) { uG&xtN8  
sort(data, IMPROVED_QUICK); |i7|QLUT  
} "n:z("Q*  
private static String[] name={ 5E?{>1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" BdB/`X*  
}; Af1mTbf=  
bcC ;i~9  
private static Sort[] impl=new Sort[]{ Jj_E/c"  
new InsertSort(), HlgF%\@a+U  
new BubbleSort(), [2~Et+r6g  
new SelectionSort(), =K~<& l8  
new ShellSort(), ^aN;M\  
new QuickSort(), Vq2d+ ,fb  
new ImprovedQuickSort(), <H`&Zqqk  
new MergeSort(), _C DUUr  
new ImprovedMergeSort(), F#eZfj~  
new HeapSort() #GT/Q3{C  
}; TB\#frG  
xrxORtJ<  
public static String toString(int algorithm){ qk{2%,u$@{  
return name[algorithm-1]; Co&#mVY4,  
} fI;6!M#  
6MvjNbQ  
public static void sort(int[] data, int algorithm) { Eb{Zm<TP  
impl[algorithm-1].sort(data); xX*I .saK  
} }&Ngh4/  
C:xg M'~+  
public static interface Sort { Z0s}65BR  
public void sort(int[] data); zMxHJNQ\D  
} !E8y!|7$  
BZP}0  
public static void swap(int[] data, int i, int j) { FM$XMD0=  
int temp = data; P!3)-apP\  
data = data[j]; c+,F)i^`  
data[j] = temp; @{3$H^  
} 3Cmbt_WV  
} l8 k@.<nCO  
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