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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。 e{&gF1" [  
插入排序: ty>O}9%  
51x,[y+Xe  
package org.rut.util.algorithm.support; x{$NstGB  
if>] )g2lr  
import org.rut.util.algorithm.SortUtil; RMK U5A7  
/** X;h~s:LM  
* @author treeroot y1X.Mvc  
* @since 2006-2-2 ~_%[j8o&l  
* @version 1.0 .Ko`DH~!,C  
*/ "Q1hP9xV  
public class InsertSort implements SortUtil.Sort{ 2+PIZ6=hN  
0P(}e[~Z  
/* (non-Javadoc) M_K&x-H0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]mSVjF3l  
*/ ?L^ Gu ]y  
public void sort(int[] data) { {Hu0  
int temp; =%LS9e^7D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gj=il-Po  
} Ry C7  
} 8@-US , |  
} A7H=#L+C  
zVu}7v()  
} OK=t)6&b  
GF&"nW9A  
冒泡排序: o/R-1\Dn  
Wm 61  
package org.rut.util.algorithm.support; s/V[tEC*z  
)1/O_N6C  
import org.rut.util.algorithm.SortUtil; ^gG,}GTl  
rQJoaP+\q  
/** YC~+r8ME$j  
* @author treeroot F/8y p<_r  
* @since 2006-2-2 6]VTn-  
* @version 1.0 iYnt:C  
*/ x>cu<,e$d\  
public class BubbleSort implements SortUtil.Sort{ pN[i%\vh  
6%TV X  
/* (non-Javadoc) aC*J=_9o #  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n" sGI  
*/ <d4^gAfs*  
public void sort(int[] data) { *d(Dk*(  
int temp; ;6?K&}J)-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ rgr> ;   
if(data[j] SortUtil.swap(data,j,j-1); Wxjpe4  
} rlD@O~P4  
} Ch3##-  
} U/>5C:  
} +xMDm_TGLA  
RaAq>B WPr  
} 4"{q|~&=:$  
JmkJ^-A 6  
选择排序: d=[ .   
gIeo7>u  
package org.rut.util.algorithm.support; [eImP V]  
\gdd  
import org.rut.util.algorithm.SortUtil; VrpY BU  
BtspnVB ez  
/** q6q= ,<T%S  
* @author treeroot Nbr{)h  
* @since 2006-2-2 `g7' )MSy  
* @version 1.0 q07>FW R  
*/ nN[,$`JD,  
public class SelectionSort implements SortUtil.Sort { [yz;OoA:;  
m9/a!|fBE  
/* Mvux=Ws  
* (non-Javadoc) H_9~gi  
* tZJKB1#WbP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1*Z}M%  
*/ .$Y[>9  
public void sort(int[] data) { B6BOy~B0  
int temp; QFMS]  
for (int i = 0; i < data.length; i++) { Z EW`?6  
int lowIndex = i; X:YxsZQ 5Y  
for (int j = data.length - 1; j > i; j--) { Z=#!FZ{  
if (data[j] < data[lowIndex]) { "QMHY\C  
lowIndex = j; Epx.0TA=t  
} _QQO&0Z  
} =&vV$UtV  
SortUtil.swap(data,i,lowIndex); YPN|qn(  
} 4WLB,<b}  
} /SyiJCx0  
s;bqUY?LD  
} @^%# ]x,:  
_b+3;Dy  
Shell排序: Q,scjt[  
k vb"n}  
package org.rut.util.algorithm.support; ak R*|iK#b  
W*P/~U=  
import org.rut.util.algorithm.SortUtil; ,\VNs'j  
3 Tt8#B  
/** .NjOaK)\  
* @author treeroot  '{),gV.  
* @since 2006-2-2 \eN}V  
* @version 1.0 IlH*s/  
*/ 5z0SjQ  
public class ShellSort implements SortUtil.Sort{ by- B).7  
b(wiJ&t  
/* (non-Javadoc) ,$*$w<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'E9\V\bi  
*/ Q WOd&=:  
public void sort(int[] data) { G*ecM`Bl  
for(int i=data.length/2;i>2;i/=2){ Yt&^ i(  
for(int j=0;j insertSort(data,j,i); DwoO([&I  
} {&xKS WNc  
} ^s^X nQhE  
insertSort(data,0,1); nfc&.(6x<  
} Jg@PhN<9  
5WEF^1  
/** HH^eEh4g  
* @param data %N2=:;f  
* @param j Hg<]5  
* @param i }nkX-PG9  
*/ \MnlRBUM,  
private void insertSort(int[] data, int start, int inc) { ^27r-0|l^  
int temp; ^hU7QxW  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); w9vqFtj  
} [-Dx)N  
} &P rx=L`  
} QHK$2xtq|  
y:xZ(RgfF  
} B&cC;Hw  
r.[9/'>  
快速排序: O>UR\l|+:2  
fxjs"rD5  
package org.rut.util.algorithm.support; %{axoGd  
WUKYwA/t  
import org.rut.util.algorithm.SortUtil; h&&ufF]D  
60Y&)UR  
/** d&F8nBIM5  
* @author treeroot ~i(X{ ^,3  
* @since 2006-2-2 ~qs 97'  
* @version 1.0 TC'tui  
*/ Q 1g@FsW&U  
public class QuickSort implements SortUtil.Sort{ M*|x,K=U  
Ue! &Vm  
/* (non-Javadoc) 'RXh E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i&RPY bT{  
*/ .^ soX}  
public void sort(int[] data) { =}F &jl  
quickSort(data,0,data.length-1); sT|8a  
} K%.\@l2Cp  
private void quickSort(int[] data,int i,int j){ ]JbGP{UiN  
int pivotIndex=(i+j)/2; Dr&2q X!  
file://swap c5pF?kFaD  
SortUtil.swap(data,pivotIndex,j); &0~E+ 9b  
Pr9$( 6MX  
int k=partition(data,i-1,j,data[j]); Iell`;  
SortUtil.swap(data,k,j); K%O%#Kk  
if((k-i)>1) quickSort(data,i,k-1); _uID3N%  
if((j-k)>1) quickSort(data,k+1,j); *zJ}=%)f  
e+j7dmGa  
} .hXxh)F  
/** W-2,QVp%  
* @param data YhRES]^  
* @param i YP/BX52 v  
* @param j 6Gwk*%sb  
* @return h,45-#+  
*/ 5$/ED3mcK  
private int partition(int[] data, int l, int r,int pivot) { ,,OO2EgZ`  
do{ pri=;I(2A  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -r7*C :E  
SortUtil.swap(data,l,r); /{6PwlP5  
} P-.>vi^+  
while(l SortUtil.swap(data,l,r); 7' ]n_-fu  
return l; 8i;EpAwB  
} j@ lHgis  
q{ i9VJ]  
} 2Gd.B/L6  
L TzD\C'  
改进后的快速排序: oSq4g{xvMH  
J4&d6[40  
package org.rut.util.algorithm.support; sA[hG*#/S  
N*y09?/h  
import org.rut.util.algorithm.SortUtil; 8c3Qd  
q#$Al  
/** A!\ g!*  
* @author treeroot LB1LQ 0M  
* @since 2006-2-2 hOG9  
* @version 1.0 nep0<&"  
*/ YBehyx2eK  
public class ImprovedQuickSort implements SortUtil.Sort { *]:gEO  
9ldv*9v  
private static int MAX_STACK_SIZE=4096; Js.2R$o =*  
private static int THRESHOLD=10;  Y[#EFM  
/* (non-Javadoc) wylbs@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qj/ pd 7\  
*/ -{n2^vvF  
public void sort(int[] data) { ge %ytrst  
int[] stack=new int[MAX_STACK_SIZE]; /}t>o* x  
(e.?). e  
int top=-1; &@NTedg!  
int pivot; aNs~Uad1U  
int pivotIndex,l,r; K Rs e  
4>x]v!d  
stack[++top]=0; >]s\%GO  
stack[++top]=data.length-1; noJ5h |  
ra2sYH1wr  
while(top>0){ l+`f\},  
int j=stack[top--]; <pyLWmO  
int i=stack[top--]; ~$cz`A  
B >2"O  
pivotIndex=(i+j)/2; dY[ XNP  
pivot=data[pivotIndex]; 2[-@ .gH  
: .Y  
SortUtil.swap(data,pivotIndex,j); iZm# "}VG  
4LO4SYW7  
file://partition YW9r'{(D(I  
l=i-1; )lh48Ag0t;  
r=j; iYJ:P  
do{ 5G  @  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sF-{ (  
SortUtil.swap(data,l,r); P&I%!'<   
} A@M%}h  
while(l SortUtil.swap(data,l,r); 4j+FDc`  
SortUtil.swap(data,l,j); _sLSl; /t  
[&y="6No  
if((l-i)>THRESHOLD){ ~xfoZiIA}  
stack[++top]=i; B6 rz  
stack[++top]=l-1; EC#4"bU`'2  
} ,6T F]6:  
if((j-l)>THRESHOLD){ mXAGa8##j  
stack[++top]=l+1; 2w"Xv,*.'i  
stack[++top]=j; |W $epOLg  
} k%2woHSu&  
l}w9c`f  
} / ,Unp1D  
file://new InsertSort().sort(data); ye?4^@u u  
insertSort(data); v|~&I%S7  
} ygI81\ D  
/** rFn%e  
* @param data H[oCI|k  
*/ "MS}@NLUW  
private void insertSort(int[] data) { y-C=_v_X  
int temp; $U . >]i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); xAlyik  
} DPV>2' fV  
} XL=Y~7b  
} 'DLgOUvh  
10.u  
} I'sq0^  
*49({TD6`  
归并排序: {9mXJu$cc  
V/N:Of:\R  
package org.rut.util.algorithm.support; lSW6\jX  
={'*C7K)oK  
import org.rut.util.algorithm.SortUtil; s0D,n1x  
9c pjO  
/** R k'5L  
* @author treeroot VT@,RlB0  
* @since 2006-2-2 WxE^S ??|  
* @version 1.0 VKGH+j[  
*/ (g(.gN]  
public class MergeSort implements SortUtil.Sort{ A8|DB@ Bi  
6>  L)  
/* (non-Javadoc) r [NI#wW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ku 'OM6D<  
*/ Wb)>APL  
public void sort(int[] data) { /kZ{+4M  
int[] temp=new int[data.length]; +F>9hA  
mergeSort(data,temp,0,data.length-1); 'J[ n}r  
} rHSA5.[1P  
%1JN%  
private void mergeSort(int[] data,int[] temp,int l,int r){ Wnf3[fV6P  
int mid=(l+r)/2; gC/~@Z8W]  
if(l==r) return ; S2APqRg*  
mergeSort(data,temp,l,mid); TK! D=M  
mergeSort(data,temp,mid+1,r); uGo tXb  
for(int i=l;i<=r;i++){ 0 oC5W?>8s  
temp=data; H0dHW;U<1  
} U<|hIv-&  
int i1=l; KzgW+6*G  
int i2=mid+1; dx.,  
for(int cur=l;cur<=r;cur++){ M'(4{4rC  
if(i1==mid+1) (B/od#nU  
data[cur]=temp[i2++]; W~W `fm  
else if(i2>r) k_,wa]ws$  
data[cur]=temp[i1++]; <]w(1{q(  
else if(temp[i1] data[cur]=temp[i1++]; Sh@en\m=#S  
else k'6Poz+<  
data[cur]=temp[i2++]; '!V5 #J  
} (7zdbJX  
} K-<kp!v  
^Fop/\E  
} ?^X e^1(  
^i;y2c  
改进后的归并排序: *m>XtBw.  
jIvSjlmI  
package org.rut.util.algorithm.support; O,D/& 0  
M "W~%   
import org.rut.util.algorithm.SortUtil; $E >)  
Uo<iZ3J  
/** \>7hT;Av=G  
* @author treeroot hRc.^"q9  
* @since 2006-2-2 Y-ZTv(<  
* @version 1.0 Bu{1^g:  
*/ U%PII>s'#  
public class ImprovedMergeSort implements SortUtil.Sort { ~#]$YoQ&O  
%C1*`"Jb&  
private static final int THRESHOLD = 10; ZH s' #  
<T^:`p/]4  
/* I\y=uC  
* (non-Javadoc) Zqp<8M2  
* q@+#CUa&n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fcp8RBq  
*/ ,suC`)R  
public void sort(int[] data) { #P,C9OQD  
int[] temp=new int[data.length]; +`(,1L1  
mergeSort(data,temp,0,data.length-1); $qp,7RW  
} _v\L'`bif  
'P`L?/_3  
private void mergeSort(int[] data, int[] temp, int l, int r) { wI{ED  
int i, j, k; KD(}-zUs  
int mid = (l + r) / 2; <\6<-x(H5  
if (l == r) .29y3}[PO  
return; =Z~nzyaN  
if ((mid - l) >= THRESHOLD) =7l'3z8  
mergeSort(data, temp, l, mid); {E3329t|'  
else lYq/ n&@_1  
insertSort(data, l, mid - l + 1); lk[BS*  
if ((r - mid) > THRESHOLD) iC`mj  
mergeSort(data, temp, mid + 1, r); J;R1OJs S  
else '*d);{D8  
insertSort(data, mid + 1, r - mid); RIg `F#, 3  
:}n\ r/i  
for (i = l; i <= mid; i++) { 97L|IZ s)  
temp = data; O9/7?"l"  
} ]ysEj3  
for (j = 1; j <= r - mid; j++) { jWE?$r"  
temp[r - j + 1] = data[j + mid]; sfUKH;xC  
} >P_/a,O8  
int a = temp[l]; I `I+7~t  
int b = temp[r]; $TK<~3`  
for (i = l, j = r, k = l; k <= r; k++) { ? 3'O  
if (a < b) { W&'[Xj  
data[k] = temp[i++]; Up*.z\|'y  
a = temp; MmL)CT  
} else { m .':5  
data[k] = temp[j--]; uB*Y}"Fn  
b = temp[j]; ),%(A~\  
} S +mM S  
} P)k!#*  
} loR,f&80=O  
-V\$oVS0S  
/** JsY|Fv  
* @param data A])+Pe  
* @param l (;(P3h  
* @param i g=q1@)  
*/  ]$=\zL  
private void insertSort(int[] data, int start, int len) { gq`S`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); kaUEv\T   
} &40# _>W7  
} y$h.k"x`  
} #|ILeby  
} R4 x!b`:i  
K4`)srd  
堆排序: nS$_VJ]~  
O dWZYWj  
package org.rut.util.algorithm.support; +C8yzMN\  
~IhLjE  
import org.rut.util.algorithm.SortUtil; $T-Pl57  
9cMQ51k)E  
/** hALg5.E{T  
* @author treeroot /ZpwJc`e  
* @since 2006-2-2 ) Z^b)KAk  
* @version 1.0 F caO-  
*/ B*c@w~E  
public class HeapSort implements SortUtil.Sort{ 4eh~/o&h  
W5c?f,  
/* (non-Javadoc) :IB@@5r1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O% }EpIP_  
*/ K|Kc.   
public void sort(int[] data) { M0$wTmXM  
MaxHeap h=new MaxHeap(); #eZm)KFQg  
h.init(data); [i 7^a/e  
for(int i=0;i h.remove(); {%! >0@7  
System.arraycopy(h.queue,1,data,0,data.length); $?FA7=_  
} &'{?Y;A  
}r _d{nhi  
private static class MaxHeap{ SAUfA5|e  
W}0cM9 g  
void init(int[] data){ ~REP@!\r^  
this.queue=new int[data.length+1];  =o? Q0  
for(int i=0;i queue[++size]=data; 7JL*y\'  
fixUp(size); ~bsL W:.'  
} C A 8N  
} S`?L\R.:  
6U!zc]>  
private int size=0; : l&g5  
A."]6R<  
private int[] queue; YZllfw$9  
Ee0}Xv  
public int get() { `= FDNOwp  
return queue[1]; >mXq= 9L4  
} A KjCm*K(q  
6:$+"@ps  
public void remove() { 23|R $s>}i  
SortUtil.swap(queue,1,size--); |w)S &+  
fixDown(1); 2n3g!M6~  
} [e.@Yx_}  
file://fixdown rfwX:R6,g  
private void fixDown(int k) { k'b'Ay(<  
int j; TLWU7aj&!  
while ((j = k << 1) <= size) { hxX-iQya  
if (j < size %26amp;%26amp; queue[j] j++; 1O@y >cV  
if (queue[k]>queue[j]) file://不用交换 ;:l>Kac  
break; }g]O_fN7~  
SortUtil.swap(queue,j,k); {CH *?|t  
k = j; l+n0=^ Z  
} /tqQAvj  
} y%NZ(Y,v  
private void fixUp(int k) { =T3O;i  
while (k > 1) { p+7ZGB  
int j = k >> 1; PYPDK*Ie  
if (queue[j]>queue[k]) UL<*z!y  
break; oy< q;'  
SortUtil.swap(queue,j,k); }bM=)eUfX  
k = j; DI,8y"!5  
} !c#~g0H+  
} A!n)Fpk  
DwBKqhu  
} g]a5%8*{  
iF!r}fUU6  
} x=jS=3$8  
^`< %Pk  
SortUtil: XaH%i~}3  
%*Aq%,.={  
package org.rut.util.algorithm; +GDT@,/  
l2 [{T^  
import org.rut.util.algorithm.support.BubbleSort; (Ymj  
import org.rut.util.algorithm.support.HeapSort; GL- r;  
import org.rut.util.algorithm.support.ImprovedMergeSort; P{tH4V23T  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1,pg7L8H  
import org.rut.util.algorithm.support.InsertSort; ;VlA~tv  
import org.rut.util.algorithm.support.MergeSort; tuWJj^  
import org.rut.util.algorithm.support.QuickSort; 9X%H$>s  
import org.rut.util.algorithm.support.SelectionSort; SRfnT?u6  
import org.rut.util.algorithm.support.ShellSort; Vub ($  
qQ=\R1l  
/** +\@}IKWl-?  
* @author treeroot V3] Z~@  
* @since 2006-2-2 U) B^R  
* @version 1.0 a-(OAzQ_  
*/ HAOl&\)7"_  
public class SortUtil { v==]v2 -  
public final static int INSERT = 1; S{.G=O  
public final static int BUBBLE = 2; h|Os T  
public final static int SELECTION = 3; v5Qp[O_  
public final static int SHELL = 4; #G`UR  
public final static int QUICK = 5; W]l&mr  
public final static int IMPROVED_QUICK = 6; ),53(=/hl  
public final static int MERGE = 7; ,MRAEa2  
public final static int IMPROVED_MERGE = 8; 4,.B#: 8  
public final static int HEAP = 9; i{.%4tA4  
Qe,aIh  
public static void sort(int[] data) { 6'YsSde".  
sort(data, IMPROVED_QUICK); NKJ+DD:'  
} fAHf}j  
private static String[] name={ {T2=bK~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" fRT4,;  
}; N-cLp}D}WB  
|y}iOI  
private static Sort[] impl=new Sort[]{ LRa^x44  
new InsertSort(), "pLWJvj6-  
new BubbleSort(), )*tV  
new SelectionSort(), WD${f#]N  
new ShellSort(), hNWZ1r~_  
new QuickSort(), CpG]g>]L&[  
new ImprovedQuickSort(), =MCQNyf+  
new MergeSort(), pjVF^gv,*  
new ImprovedMergeSort(), ICxj$b  
new HeapSort() XI"8d.VR  
}; K[/sVaPZ  
[8OQ5}do/  
public static String toString(int algorithm){ 3|qT.QR`Z  
return name[algorithm-1]; hCvK2Xu   
} R3,O;9i  
dnXre*rhz  
public static void sort(int[] data, int algorithm) { wx2 EMr   
impl[algorithm-1].sort(data); ~[H+,+XLY+  
} $-Wn|w+h<a  
(|kcSnF0  
public static interface Sort { ~n<U8cm O  
public void sort(int[] data); YB&b_On,f  
} ` <3xi9  
Sh(Ws2b7  
public static void swap(int[] data, int i, int j) { 'L1=:g.\i  
int temp = data; KbP( ;  
data = data[j]; @_ Q  
data[j] = temp; +^0Q~>=VD  
} y53f73Cg  
} :e|[gEA  
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