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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。 t,|`#6Ft  
插入排序: ]A)`I  
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package org.rut.util.algorithm.support;  ;ew j  
<:=}1t.Z  
import org.rut.util.algorithm.SortUtil; B;f\H,/59  
/** U_!Wg|  
* @author treeroot QRb iO  
* @since 2006-2-2 [:Kl0m7  
* @version 1.0 $*EK v'g[n  
*/ d $~q  
public class InsertSort implements SortUtil.Sort{ \ci'Cbn\o  
C" vj#Tx  
/* (non-Javadoc) ox9$aBjJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O_@  
*/ ~"-+BG(5  
public void sort(int[] data) { > cFH=um  
int temp; os/_ObPiX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O3, IR1  
} := OdjfhY  
} k@QU<cvI  
} [|{2&830  
_?]E)i'RI  
} w7d(|`  
CMk0(sztU_  
冒泡排序: Y"J' 'K  
q)S70M_1  
package org.rut.util.algorithm.support; x;d*?69f]  
xD[O8vQE  
import org.rut.util.algorithm.SortUtil; LU$aCw5 B;  
pU4k/v555;  
/** VKUoVOFvPR  
* @author treeroot $#q:\yQsPC  
* @since 2006-2-2 \ZSZ(p#1  
* @version 1.0 q1C) *8*g  
*/ ry bs9:_}  
public class BubbleSort implements SortUtil.Sort{ c s0;:H*N*  
09FHE/L  
/* (non-Javadoc) ~dkN`1$v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %mLQ'$  
*/ =2;2_u?  
public void sort(int[] data) { -"m4 A0  
int temp; l)@Zuh  
for(int i=0;i for(int j=data.length-1;j>i;j--){ lP$bxUNt  
if(data[j] SortUtil.swap(data,j,j-1); JBY`Y ]V3  
} \Km gFyF  
} !ho~@sc{W  
} ,+`1/  
} IK#W80y  
"`Y.N$M`k  
} )tc"4lp -  
>(N0''eM]  
选择排序: khS b|mR)  
01bBZWX  
package org.rut.util.algorithm.support; uCX+Lw+As  
;IklS*p]  
import org.rut.util.algorithm.SortUtil; V5 $J  
<HReh>)[  
/** j SLC L'  
* @author treeroot y*i_Ec\h  
* @since 2006-2-2 Ln~Z_!  
* @version 1.0 GTvp)^ h  
*/ ]`[r=cG  
public class SelectionSort implements SortUtil.Sort { >e F4YZ"  
\1k(4MWd  
/* v]`}T/n  
* (non-Javadoc) VU~ R  
* @y3u'Y,B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AawK/tfs  
*/  U~%V;*|4  
public void sort(int[] data) { EbTjBq  
int temp; i:8g3|JfMe  
for (int i = 0; i < data.length; i++) { gDY+'6m;  
int lowIndex = i; p72:oX\Q I  
for (int j = data.length - 1; j > i; j--) { /`d|W$vN  
if (data[j] < data[lowIndex]) { ARcPHV<(2  
lowIndex = j; A\{dq:  
} L`$m<9w'  
} J$Huzs#  
SortUtil.swap(data,i,lowIndex); pVuJ4+`  
} }d<xbL!#  
} p.Y =  
3_%lN4sz  
} wW5:p]<Y  
Jptzc:~B  
Shell排序: B.:DW3  
dy>iIc>  
package org.rut.util.algorithm.support; RL0#WBR  
014p= W  
import org.rut.util.algorithm.SortUtil; P<Wtv;Z1Z  
g[Tl#X7F  
/** sY @S  
* @author treeroot N#C"@,}Y  
* @since 2006-2-2 eVRFb#EU0e  
* @version 1.0 -K+" :kiS  
*/ eh`sfH  
public class ShellSort implements SortUtil.Sort{ @y )'h]d  
r3OTU$t?  
/* (non-Javadoc) -c%K_2`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q(tdBd'o6  
*/ () l#}H`m  
public void sort(int[] data) { \>8r)xC  
for(int i=data.length/2;i>2;i/=2){ .#py5&`%  
for(int j=0;j insertSort(data,j,i); MjGeH>c  
} ["5Z =4  
} k]J!E-yI8  
insertSort(data,0,1); QfLDyJv`e  
} &4g]#A>@  
SZGeF;N  
/** D{b*,F:&@)  
* @param data N$Pi4  
* @param j ?kOtK  
* @param i `5VEGSP]  
*/ ~d+.w%Z `  
private void insertSort(int[] data, int start, int inc) { < 5%:/j  
int temp; <<xUh|zE  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); B/P E{ /  
} 9XU"Ppv  
} iy{n"#uX  
} Ww8C}2g3  
5C03)Go3Z  
} "rV-D1Dki  
YMlnC7?_ /  
快速排序: 7/p&]0w  
wHGiN9A+  
package org.rut.util.algorithm.support; (:JX;<-  
^TC<_]7  
import org.rut.util.algorithm.SortUtil; -ahSFBZlg  
3['aK|qk.  
/**  y">_$  
* @author treeroot +/">]QJ  
* @since 2006-2-2 %t*_Rtz\o  
* @version 1.0 L|O'X4"&_  
*/ Qktj  
public class QuickSort implements SortUtil.Sort{ $d<vPpJ3  
*2K/)(  
/* (non-Javadoc) }|MPQy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ba=-F4?  
*/ iX 3Y:   
public void sort(int[] data) { RyI(6TZl  
quickSort(data,0,data.length-1); Gp0B^^H$  
} $L~?!u&N  
private void quickSort(int[] data,int i,int j){ J>H$4t#HX  
int pivotIndex=(i+j)/2; {'.[N79xP  
file://swap k!{0ku}]  
SortUtil.swap(data,pivotIndex,j); =F!_ivV  
x,f=J4yco  
int k=partition(data,i-1,j,data[j]); ^/K]id7 2  
SortUtil.swap(data,k,j); p2v+sWO  
if((k-i)>1) quickSort(data,i,k-1); 3^ct;gz  
if((j-k)>1) quickSort(data,k+1,j); %kod31X3<  
xJ/<G$LNJ0  
} 5xHP5+&  
/** WtT* 1Z  
* @param data J%_m`?  
* @param i 9Ai e$=  
* @param j ; O6Ez-"  
* @return pZpAb+  
*/ Ec44JD  
private int partition(int[] data, int l, int r,int pivot) { (\CT "u-  
do{ ;oe j~  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +[ +4h}?  
SortUtil.swap(data,l,r); A Th<=1  
} z.NJu q  
while(l SortUtil.swap(data,l,r); D)XV{Wit  
return l;  73:y&U  
} )oEHE7y  
# :^aE|s  
} 4Nz@s^9  
-?m"+mUP  
改进后的快速排序: hJkP_( +J\  
SN${cs%  
package org.rut.util.algorithm.support; {8!\aYI  
W@X/Z8.(  
import org.rut.util.algorithm.SortUtil; jH 4,-  
9 n(.v}  
/** /< OoZf+[  
* @author treeroot aP#nK  
* @since 2006-2-2 k9V#=,K0  
* @version 1.0 K,ccM[hu|  
*/ =) Aav!  
public class ImprovedQuickSort implements SortUtil.Sort { +3;`4bW  
~,*=j~#h  
private static int MAX_STACK_SIZE=4096; gpIq4Q<  
private static int THRESHOLD=10; .u+ZrA#  
/* (non-Javadoc) 5_|Sm=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XZ|%9#6  
*/ *wSz2o),  
public void sort(int[] data) { \yQs[l%J  
int[] stack=new int[MAX_STACK_SIZE]; 5:oteNc3  
E< 57d,3l  
int top=-1; e`N/3q7  
int pivot; GmjTxNU@  
int pivotIndex,l,r; ws^ 7J/8  
!>n^ ;u  
stack[++top]=0; il=:T\'U9  
stack[++top]=data.length-1; E46+B2_~zk  
!foiGZ3g  
while(top>0){ E41ay:duAl  
int j=stack[top--]; GN&-`E]-  
int i=stack[top--]; /Dmuvb|A  
vr:5+wew  
pivotIndex=(i+j)/2; fz9 ,p;b  
pivot=data[pivotIndex]; VL[}  
:1O49g3R  
SortUtil.swap(data,pivotIndex,j); *$+:Cbe-F  
z2/E?$(  
file://partition aMLtZ7i>  
l=i-1; lRy^Wp  
r=j; HVG:q#=C  
do{ Hzn6H4Rc  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =!?4$vW  
SortUtil.swap(data,l,r); _? aI/D  
} >j%4U*  
while(l SortUtil.swap(data,l,r); <w9<G  
SortUtil.swap(data,l,j); [v,Y-}wQ)  
R&!{3!V  
if((l-i)>THRESHOLD){ B %L dH  
stack[++top]=i; H N )@sLPc  
stack[++top]=l-1; eHIsTL@Fp  
} <kc9KE  
if((j-l)>THRESHOLD){ `~+1i5-}  
stack[++top]=l+1; bb@3%r|_<  
stack[++top]=j; [k<w'n*  
} JSCZX:5  
;7 F'xz"  
} Klv~#9Si  
file://new InsertSort().sort(data); JX $vz*KF  
insertSort(data); Qf$3!O}G  
} 1( nK|  
/** ]b&"](A  
* @param data vz87]InI  
*/ zCuN 8  
private void insertSort(int[] data) { fG`<L;wi  
int temp; /XeCJxo8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ws_/F  
} O{Y_j&1  
} x&['g*[L0  
} 2Nau]y]=  
$+%eLx*  
} r ?e''r  
!#b8QER  
归并排序: 9_/dj"5  
xO` `X<  
package org.rut.util.algorithm.support; K'DRX85F  
F?3zw4Vt~  
import org.rut.util.algorithm.SortUtil; HOPi2nf{  
@`D`u16]i  
/** 7hq$vI%0  
* @author treeroot xDtJ& 6uFw  
* @since 2006-2-2 T`Jj$Lue{  
* @version 1.0 ej^pFo  
*/ '|jN!y^ 2p  
public class MergeSort implements SortUtil.Sort{ ?Z{:[.  
:5 zXW;s  
/* (non-Javadoc) {0?]weN*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \-2O&v'}  
*/ ]?/7iM  
public void sort(int[] data) { :jP4GCxU|  
int[] temp=new int[data.length]; %s(Ri6R&  
mergeSort(data,temp,0,data.length-1); D'UYHc {  
} ;bh[TmQTJ  
uJg|  
private void mergeSort(int[] data,int[] temp,int l,int r){ |GqKa  
int mid=(l+r)/2; 0DR:qw  
if(l==r) return ; g"P!KPrf1p  
mergeSort(data,temp,l,mid); ^j)0&}fB  
mergeSort(data,temp,mid+1,r); \l d{Z;e  
for(int i=l;i<=r;i++){ C3#mmiL-  
temp=data; qe@ctHpn  
} V]fsjpvlmr  
int i1=l; jeLC)lQ*  
int i2=mid+1; {YT@$K]w,  
for(int cur=l;cur<=r;cur++){ "6} #65  
if(i1==mid+1) +kdZfv>  
data[cur]=temp[i2++]; mY& HK)  
else if(i2>r) TQjM3Ri=V  
data[cur]=temp[i1++]; fd CN?p[_  
else if(temp[i1] data[cur]=temp[i1++]; S@WzvM  
else x_eR/B>  
data[cur]=temp[i2++]; '_`O&rbT  
} &|j^?ro6  
} tXu_o6]  
:Dn{  
} Pd^v-}[  
0DIXd*oj&  
改进后的归并排序: B?|url6h  
.on}F>3k$  
package org.rut.util.algorithm.support; {rE]y C^  
>i:h dcxe  
import org.rut.util.algorithm.SortUtil; G|,'6|$jE  
E#I^D/0  
/** <lxE^M  
* @author treeroot dh.vZ0v=7  
* @since 2006-2-2 ~UhTy~jya  
* @version 1.0 no`>r}C  
*/ }@'Zt6+tS  
public class ImprovedMergeSort implements SortUtil.Sort { zK@DQ5  
q,->E<8  
private static final int THRESHOLD = 10; 9bVPMq7}i  
U$+G9  
/* rERHfr`OU  
* (non-Javadoc) ySXQn#}-,  
* !U?Z<zh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OY?x'h  
*/ Bl6>y/  
public void sort(int[] data) { k#Bq8d  
int[] temp=new int[data.length]; N-Jp; D  
mergeSort(data,temp,0,data.length-1); teDO,$  
} {WYHT6Z  
{YoK63b$  
private void mergeSort(int[] data, int[] temp, int l, int r) { q=+AN</  
int i, j, k; \as^z!<  
int mid = (l + r) / 2; 'GJ'Vli  
if (l == r) p~!UE/V  
return; fSL'+l3  
if ((mid - l) >= THRESHOLD) 7yDWcm_y  
mergeSort(data, temp, l, mid); 8F#z)>q~  
else /GQN34RD  
insertSort(data, l, mid - l + 1); JXa5snh{h  
if ((r - mid) > THRESHOLD) LaolAqU  
mergeSort(data, temp, mid + 1, r); 61"w>;d6  
else #;WKuRv   
insertSort(data, mid + 1, r - mid); U<"@@``+N  
+LEU|#  
for (i = l; i <= mid; i++) { @|hn@!YK  
temp = data; f(r=S Xa*  
} )t#v55M  
for (j = 1; j <= r - mid; j++) { ;xKPa6`E  
temp[r - j + 1] = data[j + mid]; WU" Lu  
} ha -KfkPFE  
int a = temp[l]; btZ9JZvMx  
int b = temp[r]; )rce%j7  
for (i = l, j = r, k = l; k <= r; k++) { ztRe\(9bL  
if (a < b) { ),u)#`.l G  
data[k] = temp[i++]; (aQNe{D#  
a = temp; },W<1*|  
} else { <RFT W}f!  
data[k] = temp[j--]; zZ11J0UI  
b = temp[j]; ^zs]cFN#%  
} `Zm- F  
} F CbU> 1R  
} dQkp &.  
Q Jnji  
/** 2xx  
* @param data c<c"n'  
* @param l HT: p'Yyi  
* @param i \F }s"#  
*/ + yF._Ie=  
private void insertSort(int[] data, int start, int len) { 'q:t48&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ff3HR+%M  
} u#c3T'E  
} (> {CwtH][  
} MkCq$MA  
} z|5Sy.H>  
-3)]IA  
堆排序: jwe^(U  
8>KBh)q  
package org.rut.util.algorithm.support; k-`5T mW  
ZI0C%c.~  
import org.rut.util.algorithm.SortUtil; t;?TXAA  
f L}3I(VK  
/** <:t D m  
* @author treeroot e/{1u$  
* @since 2006-2-2 ^q$m>|KI  
* @version 1.0 :{YOJDtR  
*/ <Z -d5D>  
public class HeapSort implements SortUtil.Sort{ 1l(_SD;90t  
zv%9?:  
/* (non-Javadoc)  >>nt3q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e7cqm*Qi  
*/ _?+gfi+  
public void sort(int[] data) { V:wx@9m)  
MaxHeap h=new MaxHeap(); Bn5O;I13  
h.init(data); Z^ e?V7q  
for(int i=0;i h.remove(); %v_w"2x;  
System.arraycopy(h.queue,1,data,0,data.length); !&ly :v!  
} =DT7]fU  
,vnHEY&  
private static class MaxHeap{ 4%]wd}'#Un  
bc{ {a  
void init(int[] data){ mqx#N%  
this.queue=new int[data.length+1]; .8O.  
for(int i=0;i queue[++size]=data; 0)?.rthk4S  
fixUp(size); %e71BZo~^s  
} YjT7_|`(]  
} j?YZOO>X  
z TM1 e  
private int size=0; b/I_iJ8t  
*s"dCc  
private int[] queue; (}|QSf:  
,dG2[<?o  
public int get() { %O! ~!'  
return queue[1]; 7E-1 #4  
} S\F;b{S1  
)G a%Eg9  
public void remove() { _Kw<4 $0<p  
SortUtil.swap(queue,1,size--); B}(+\Q$I  
fixDown(1); [YsN c  
} me7?   
file://fixdown C XZO  
private void fixDown(int k) { |?tUUT!`t  
int j; 6^Q Bol  
while ((j = k << 1) <= size) { ks=l Nz9  
if (j < size %26amp;%26amp; queue[j] j++; vuOixAkw  
if (queue[k]>queue[j]) file://不用交换 I`~ofq?r  
break; rTgCmr'&  
SortUtil.swap(queue,j,k); ^D{!!)O  
k = j; 3miEF0x[  
} )sh+cfTCb  
} JIGoF  
private void fixUp(int k) { ~Lyy7 B9  
while (k > 1) { \R6D'Yt  
int j = k >> 1; 8w:A""  
if (queue[j]>queue[k]) 4^KeA".  
break; ^hpdre"  
SortUtil.swap(queue,j,k); aQzu[N  
k = j; i"#36CVT~  
} *gJ:irah  
} # -0}r  
\KGi54&Y  
} sI@y)z  
3Pj 6(cf  
} A`NkgVq5:  
 u Z(vf  
SortUtil: rfl-(_3  
@-7h}2P Q  
package org.rut.util.algorithm; f:=y)+@1My  
6eUM[C.  
import org.rut.util.algorithm.support.BubbleSort; {GTOHJ2  
import org.rut.util.algorithm.support.HeapSort; ZW6ZO[`6  
import org.rut.util.algorithm.support.ImprovedMergeSort; M_5$y )M  
import org.rut.util.algorithm.support.ImprovedQuickSort; #`1@4,iC  
import org.rut.util.algorithm.support.InsertSort; s bxOnw P\  
import org.rut.util.algorithm.support.MergeSort; tML[~AZh  
import org.rut.util.algorithm.support.QuickSort; U X?EOrfJ  
import org.rut.util.algorithm.support.SelectionSort; 'T8(md299  
import org.rut.util.algorithm.support.ShellSort; D9cpw0{nc  
.+;;-]})  
/** Y"x9B%e  
* @author treeroot gCVgL]jj(  
* @since 2006-2-2 y)s+/Teb  
* @version 1.0 N,iYUM?  
*/ cVx#dDdA  
public class SortUtil { pCE,l'Xa  
public final static int INSERT = 1; &.> 2@  
public final static int BUBBLE = 2; aSKLSl't`  
public final static int SELECTION = 3; s$V'|Pt  
public final static int SHELL = 4;  8>}k5Qu  
public final static int QUICK = 5; 'Mfn:n+  
public final static int IMPROVED_QUICK = 6; {hS9FdWA;  
public final static int MERGE = 7; -2{NIF^H  
public final static int IMPROVED_MERGE = 8; ^1#"FU2cP  
public final static int HEAP = 9; hzT,0<nw  
1Q&\y)@bT  
public static void sort(int[] data) { k u@sQn  
sort(data, IMPROVED_QUICK); doIcO,Q  
} oj|\NlR  
private static String[] name={ .4jU G=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" z qM:'x*  
}; Au-_6dT  
@Kx@ 2#~b  
private static Sort[] impl=new Sort[]{ s/;iZiWK  
new InsertSort(), 8f\sG:$  
new BubbleSort(), +A 4};]W|  
new SelectionSort(), @w%{yzr%  
new ShellSort(), b,Z\{M:f;F  
new QuickSort(), Kzj9!'0R  
new ImprovedQuickSort(), lK}W%hzU  
new MergeSort(), Z{9 mZ lIy  
new ImprovedMergeSort(), h!vq~g  
new HeapSort() |#y+iXTJ   
}; z'FpP  
E{Tvjh+  
public static String toString(int algorithm){ l7+[Zn/v *  
return name[algorithm-1]; nB; yS<  
} j4!g&F _y  
0[f8Gb3  
public static void sort(int[] data, int algorithm) { _a~uIGN  
impl[algorithm-1].sort(data); &<oZl.T  
} ([mC!d@a  
\:'|4D]'I  
public static interface Sort { a2'si}'3  
public void sort(int[] data); aSN"MTw.  
} d x/NY1  
yF~iVt  
public static void swap(int[] data, int i, int j) { ]TE,N$X  
int temp = data;  QB/H  
data = data[j]; u?ALZxj?  
data[j] = temp; q ,C)AZ  
} W)RCo}f  
} #>]o'KQx  
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