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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。 4 g^oy^~  
插入排序: G=%SMl>[  
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package org.rut.util.algorithm.support; >vY5%%}  
:u>9H{a  
import org.rut.util.algorithm.SortUtil; <',bqsg[  
/** Lj03Mx.2S  
* @author treeroot tXnD>H YV  
* @since 2006-2-2  6,;7iA]  
* @version 1.0 6@o *"4~Q  
*/ 4E DwZR>./  
public class InsertSort implements SortUtil.Sort{ Qcr-|?5L  
G[5z3  
/* (non-Javadoc) +cnBEv~y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RP4P"m(   
*/ lGtTZ cg  
public void sort(int[] data) { 4Fpu68y  
int temp; Vtr5<:eEx  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j -j,0!T~b  
} )YP 9  
} Yn }Ivg  
} 'VTLp.~G~  
rfS kQT  
} 73OYHp_j  
42mZ.,<  
冒泡排序: F[ 5\ x0  
gT~Yn~~b  
package org.rut.util.algorithm.support; b^]@8I[M  
L@HWm;aN  
import org.rut.util.algorithm.SortUtil; Sx3R 2-!Z  
Z>zW83a  
/** )j>BvO  
* @author treeroot <i!7f26r  
* @since 2006-2-2 CA{(x(W\:  
* @version 1.0 Z,jK(7D(  
*/ c*#*8R9.y  
public class BubbleSort implements SortUtil.Sort{ q k+(Ccl  
+Qe&#"O0  
/* (non-Javadoc) Iz[T.$9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VDP \E<3"  
*/ ]DO"2r  
public void sort(int[] data) { 9!sR}  
int temp; Ki:.^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ V,CVMbn/%N  
if(data[j] SortUtil.swap(data,j,j-1); Lk~aM bw#  
} 2E":6:Wsw  
} J<'I.KZ\z  
} <ny)yK  
} .[KXO0Ui6u  
c={bunnz#  
} u9}k^W)E  
'P^6H$0  
选择排序: %>G(2)Fb\\  
;,yjkD[mWE  
package org.rut.util.algorithm.support; _ X* A  
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import org.rut.util.algorithm.SortUtil; R2[-Q"|Ra  
u \zP`Y  
/** hqKftk)+  
* @author treeroot b:w {7  
* @since 2006-2-2 ZNEWUt{+;^  
* @version 1.0 D,H v(6({  
*/ 8Ekk"h 6  
public class SelectionSort implements SortUtil.Sort { PHh&@:  
9AsK=/Buf  
/* :"oQ _bLT  
* (non-Javadoc) +/E yX =  
* F};G&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8#MiM . f  
*/ i #%17}  
public void sort(int[] data) { aA-gl9  
int temp; h^}r$k_n  
for (int i = 0; i < data.length; i++) { _#8OHG.x  
int lowIndex = i; ZCbnDj  
for (int j = data.length - 1; j > i; j--) { Y@Zv52,  
if (data[j] < data[lowIndex]) { &gL &@';,  
lowIndex = j; 8T#tB,<fFW  
} \%FEQa0u  
} )Q%hd|R  
SortUtil.swap(data,i,lowIndex); -}Iw!p#O3  
} ![,W?  
} _s_%}8o  
*uq}jlD`!  
} >[ox|_o  
?Hd/!I&  
Shell排序: `bdCom  
#&cNR_"w  
package org.rut.util.algorithm.support; ?U`~,oI0  
RN%*3{-  
import org.rut.util.algorithm.SortUtil; UpU2H4  
R}-<ZJe  
/** +W6QtB6  
* @author treeroot ]E hW  
* @since 2006-2-2 ~X`_ g/5X  
* @version 1.0 };:+0k/  
*/ JP t=~e(  
public class ShellSort implements SortUtil.Sort{ 18AKM  
pUz;e#J|  
/* (non-Javadoc) E?z~)0z2`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^at X/  
*/ h8Bs=T  
public void sort(int[] data) { !A\Qwg>  
for(int i=data.length/2;i>2;i/=2){ ; =FSpZ@  
for(int j=0;j insertSort(data,j,i); d/k70Ybk  
} B7fV_-p:G  
} [JY1|N  
insertSort(data,0,1); 8a^E{x@HT  
} ,/=Fm  
n8.W$&-ia  
/** .ZB(!v/2  
* @param data 9f ^c9@=  
* @param j (0=e ,1 n  
* @param i vncak  
*/ g(i_di  
private void insertSort(int[] data, int start, int inc) { ugwZAC  
int temp; XRMYR97  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {F/0pvP9  
} csPziH$wl  
} Sl8A=Ez  
} h}k/okG  
NRM=0-16u$  
} VoOh$&"M  
a&Stdh  
快速排序: KL8G2"Z  
YjTRz.e{[7  
package org.rut.util.algorithm.support; Wy[Ua#Dd  
R*l#[D5A  
import org.rut.util.algorithm.SortUtil; 3:XF7T  
8<Y*@1*j  
/** W?n)IBj8  
* @author treeroot .@  3  
* @since 2006-2-2 z)RJUmY3B  
* @version 1.0 JFyw,p&xB  
*/ +ti_?gfx  
public class QuickSort implements SortUtil.Sort{ }W:Rg}v  
H+oQ L(i|_  
/* (non-Javadoc) t4RI%m\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xb2xl.2x!  
*/ KkIxtFM  
public void sort(int[] data) { TJHab;7F  
quickSort(data,0,data.length-1); YTc X4cC  
} a,GOS:?O5  
private void quickSort(int[] data,int i,int j){ yl>V '  
int pivotIndex=(i+j)/2; %[<@$qP  
file://swap )<?^~"h  
SortUtil.swap(data,pivotIndex,j); 5d7AE^SHsH  
']N1OVw^vf  
int k=partition(data,i-1,j,data[j]); -A?6)ggf.  
SortUtil.swap(data,k,j); xp!M A  
if((k-i)>1) quickSort(data,i,k-1); &DX&*Xq2  
if((j-k)>1) quickSort(data,k+1,j); /Ria"lLv  
% Rv ;e  
} /E/Z0<l7  
/** qSg#:;(O  
* @param data J <"=c z$  
* @param i $Z{ap  
* @param j n#2tFuPE  
* @return ^~3u|u  
*/ 0^H"eQO  
private int partition(int[] data, int l, int r,int pivot) { vn]e`O>y  
do{ MY8[)<q"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v0D~zV"<y  
SortUtil.swap(data,l,r); ; i)NP X  
} -W/Lg5eK  
while(l SortUtil.swap(data,l,r); b9 F:X  
return l; m a!rZ n  
} DLigpid  
"Je*70LG#  
} FN$sST  
kM0TQX)$m  
改进后的快速排序: Bb,l.w  
8=GgTpO5  
package org.rut.util.algorithm.support; JE a~avyJ  
tJ"8"T#6Vr  
import org.rut.util.algorithm.SortUtil; 0tL#-47  
9BZyCz  
/** 5^,"Ve|  
* @author treeroot +N|}6e  
* @since 2006-2-2 &V`~ z e  
* @version 1.0 I@$cw3  
*/ '7oWN,-  
public class ImprovedQuickSort implements SortUtil.Sort { yHXQCWY{8;  
}T)0:DF1,  
private static int MAX_STACK_SIZE=4096; ]^ e4coC  
private static int THRESHOLD=10; %4=r .9  
/* (non-Javadoc) U<YP@?w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \aEarIX#*  
*/ n(}W[bZ4  
public void sort(int[] data) { oMb&a0-7u  
int[] stack=new int[MAX_STACK_SIZE]; ^=CO gO]e  
BF="gZoU<  
int top=-1; -4%{Jb-1  
int pivot; g< F7UA  
int pivotIndex,l,r; b1*5#2rs.  
C[-M ~yIL  
stack[++top]=0; Jq5](F!z  
stack[++top]=data.length-1; ajy +%sXf=  
T3_3k. ,|  
while(top>0){ \CY_nn|&g  
int j=stack[top--]; ujLz<5gKuO  
int i=stack[top--]; 7f$ hg8  
U.$7=Zl8t  
pivotIndex=(i+j)/2; m0}1P]dc  
pivot=data[pivotIndex]; 8]`LRzM  
?2q;`Nb  
SortUtil.swap(data,pivotIndex,j); PnUYL.v  
}akF=/M  
file://partition aqw;T\GI+~  
l=i-1;  )S8fFV  
r=j; l_ES $%d  
do{ &OM e'P  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e5GJ:2sH  
SortUtil.swap(data,l,r); 6T qs6*  
} 7)i6L'r  
while(l SortUtil.swap(data,l,r); ;VS\'#{e  
SortUtil.swap(data,l,j); (lz Z=T  
oMUyP~1  
if((l-i)>THRESHOLD){ fz[-pJ5[  
stack[++top]=i; _Nx#)(x  
stack[++top]=l-1; o^\L41x3  
} C$<['D?8  
if((j-l)>THRESHOLD){ 1MPn{#Ff  
stack[++top]=l+1; 1v?|n8  
stack[++top]=j; @ptE&m  
} S^ ,q{x*T  
ta*6xpz-\Q  
} 3d>3f3D8;  
file://new InsertSort().sort(data); A.v'ws+VDP  
insertSort(data); Fv )H;1V  
} o6v'`p '  
/** #cAX9LV  
* @param data C-TATH%f^  
*/ 4g "_E  
private void insertSort(int[] data) { h{Zd, 9H  
int temp; gK6_vS4K)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m%p;>:"R  
} pR,eus;8  
} H wu (}  
} 79bt%P  
/7o{%~O  
} 9R1S20O  
V49[XX  
归并排序: p(8[n^~,i  
6a%dq"5 +  
package org.rut.util.algorithm.support; FRR`<do5$,  
{ ML)F]]  
import org.rut.util.algorithm.SortUtil; \G~<O071  
fJdTVs@  
/** {Rv0@)P$  
* @author treeroot XZew$Om[  
* @since 2006-2-2 KB\A<(o,  
* @version 1.0 +FGw)>g8'm  
*/ qJyGr ?  
public class MergeSort implements SortUtil.Sort{ }TDoQ]P  
C}D\^(nLu.  
/* (non-Javadoc) VmbfwHRWb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b;~?a#Z}  
*/ m+LP5S  
public void sort(int[] data) { +ak<yV1=  
int[] temp=new int[data.length]; vyXL F'L  
mergeSort(data,temp,0,data.length-1); Tg;1;XM%  
} GX@=b6#-  
H2iC? cSR  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7K`Z<v&*  
int mid=(l+r)/2; _enS_R  
if(l==r) return ; gc"A Tc  
mergeSort(data,temp,l,mid); 9u^yEqG`  
mergeSort(data,temp,mid+1,r); Y *?hA'  
for(int i=l;i<=r;i++){ FDQP|,  
temp=data; f.{/PL  
} &~MM\,KML  
int i1=l; l(j._j~p  
int i2=mid+1; }^"#&w3<  
for(int cur=l;cur<=r;cur++){ ys DGF@wZC  
if(i1==mid+1) 62Q`&n6  
data[cur]=temp[i2++]; ~ ~U,  
else if(i2>r) l2ww3)Z  
data[cur]=temp[i1++]; 8n~ o="  
else if(temp[i1] data[cur]=temp[i1++]; G{!adBna  
else %'3Y?d  
data[cur]=temp[i2++]; rWS],q=c  
} F./$nwb  
} ~z$+uK  
}Lc8tj<  
} yq]/r=e!k  
g5>c-i  
改进后的归并排序: "( NJ{J#A  
<)4>"SN&^  
package org.rut.util.algorithm.support; mgL{t"$c  
#P/}'rdt  
import org.rut.util.algorithm.SortUtil; $>6Kn`UX  
SYaL@54  
/** Nxr%xTD  
* @author treeroot [qHtN.  
* @since 2006-2-2 NB)$l2<d  
* @version 1.0 {K ,-fbE  
*/ ;]I~AGH:  
public class ImprovedMergeSort implements SortUtil.Sort { *m.4)2u=  
f)9{D[InM^  
private static final int THRESHOLD = 10; m1{OaHxKh  
y-R:-K XH=  
/* U!D\Vd  
* (non-Javadoc) !`qw" i  
* f J$>VN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I5H#]U  
*/ E7AYK&  
public void sort(int[] data) { -s,guW |  
int[] temp=new int[data.length]; &O;' ?/4 S  
mergeSort(data,temp,0,data.length-1); k.K;7GZC  
} &:}}T=@M1  
 97-=Vb  
private void mergeSort(int[] data, int[] temp, int l, int r) { 9Lp[y%{GP  
int i, j, k; =c Krp'  
int mid = (l + r) / 2; 5lYzgt-oP  
if (l == r) .~Y% AI  
return; M7. fz"M  
if ((mid - l) >= THRESHOLD) 1Uf8ef1,  
mergeSort(data, temp, l, mid); m>8tA+K)+)  
else 1WJ%n;  
insertSort(data, l, mid - l + 1); ,mm9X\ '  
if ((r - mid) > THRESHOLD) Ps=<@,dks  
mergeSort(data, temp, mid + 1, r); Ua\<oD79]  
else yIG*  
insertSort(data, mid + 1, r - mid); 0OF]|hH  
nA 5-P}  
for (i = l; i <= mid; i++) { LAcK%  
temp = data; Y>a2w zr  
} x^u [L$  
for (j = 1; j <= r - mid; j++) { ,?(IRiq%  
temp[r - j + 1] = data[j + mid]; Wt $q{g{C  
} %o4HCzId<  
int a = temp[l]; \L4+Dv<z  
int b = temp[r]; 8Ssk>M*  
for (i = l, j = r, k = l; k <= r; k++) { @$] CC1Y  
if (a < b) { r}~|,O3bc'  
data[k] = temp[i++]; d_w^u|(K  
a = temp; ]~J.YX9ST  
} else { Qu6Q)dZ<  
data[k] = temp[j--]; ganXO5T$  
b = temp[j]; u8sK~1CPf  
} 3oE3bBj  
} "u.4@^+i  
} q A?j-H  
01AzM)U3"m  
/** DY'1#$;  
* @param data * u{CnH  
* @param l BzyzOtBp3L  
* @param i 0$e]?]X6  
*/ y+K21(z.  
private void insertSort(int[] data, int start, int len) {  EWn\ ]f|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); S)~Riuy$  
} l! 9G  
} ]xf|xs  
} [/Ya4=C@  
} _?J:Z*z?  
oMer+=vH  
堆排序: x"xtILrI  
#M5[TN!  
package org.rut.util.algorithm.support; Tt*n.HA  
(U#9  
import org.rut.util.algorithm.SortUtil; :"e,& %  
Z2soy-  
/** 7\p<k/TS  
* @author treeroot +' f38D*  
* @since 2006-2-2 '@ C\,E  
* @version 1.0 pGhA  
*/ q)E J?-  
public class HeapSort implements SortUtil.Sort{ RiNKUk{-  
j_Z"=  
/* (non-Javadoc) J^]Y`Q`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $IB>a  
*/ 6D n[9V  
public void sort(int[] data) { +(9qAB7  
MaxHeap h=new MaxHeap(); KtY_m`DY4R  
h.init(data); ecl$z6'c  
for(int i=0;i h.remove(); IsjD-t  
System.arraycopy(h.queue,1,data,0,data.length); \/ 8 V|E  
} DGllJ_/Z  
w+Cs=!  
private static class MaxHeap{ |e#ea~/b  
+ysP#uAA  
void init(int[] data){ \JX.)&> -  
this.queue=new int[data.length+1]; I_/kJ#7vj  
for(int i=0;i queue[++size]=data; 3[E)/~-  
fixUp(size); //\UthOT  
} a|\ZC\(xI  
} 3kl\W[`?  
\hcb~>=C  
private int size=0; i'}Z>g5D  
(HZzA7eph  
private int[] queue; V3]"ROH  
C)Ez>~Z  
public int get() { hc4W|Ofj  
return queue[1]; ND|!U#wMNV  
} DTw3$:  
3%$nRP X  
public void remove() { 1]l m0bfs  
SortUtil.swap(queue,1,size--); |( =`l  
fixDown(1); .5PcprE/  
} ixFuqPij  
file://fixdown &%/kPF~<  
private void fixDown(int k) { xo46L\  
int j; nS}XY  
while ((j = k << 1) <= size) { HBc^[fJ^-  
if (j < size %26amp;%26amp; queue[j] j++; 8}0O @ wq  
if (queue[k]>queue[j]) file://不用交换 jLEwFPz  
break; ]c \gUU  
SortUtil.swap(queue,j,k); utz!ElzA  
k = j; TLk=H Gw  
} u\-f\Z7  
} B3V=;zn3  
private void fixUp(int k) { tE: m& ;I  
while (k > 1) { {t;{={$  
int j = k >> 1; !a[1rQH  
if (queue[j]>queue[k]) ]zza/O;31(  
break; -$]Tn#`Fb  
SortUtil.swap(queue,j,k); ?r,lgaw  
k = j; u}7#3JfLn  
} ttwfWfX  
} N}*|*!6hI  
n0T'"i[  
} W]UGo,  
6J|Y+Y$  
} @ qfVt  
v_gQCS  
SortUtil: 1o;+.]B  
[8VB"{{&  
package org.rut.util.algorithm; TuBl9 p'6  
]tVU$9D   
import org.rut.util.algorithm.support.BubbleSort; tCk;tu!d  
import org.rut.util.algorithm.support.HeapSort; ">G|\_ZF  
import org.rut.util.algorithm.support.ImprovedMergeSort; Vc! ;O9dP  
import org.rut.util.algorithm.support.ImprovedQuickSort; 'j)xryw  
import org.rut.util.algorithm.support.InsertSort; 0.~Pzg  
import org.rut.util.algorithm.support.MergeSort; L{)e1p]q  
import org.rut.util.algorithm.support.QuickSort; !6pOY*> j  
import org.rut.util.algorithm.support.SelectionSort; 'y [eH  
import org.rut.util.algorithm.support.ShellSort; }wh)I]]U  
62&(+'$n  
/** }/yhwijg  
* @author treeroot 1r?<1vh:z  
* @since 2006-2-2 |8$x  
* @version 1.0 \S)\~>.`y!  
*/ ?dukK3u  
public class SortUtil { TvE M{  
public final static int INSERT = 1; S3[rv  
public final static int BUBBLE = 2; +oZq~2?*S6  
public final static int SELECTION = 3; K.Tfu"6  
public final static int SHELL = 4; .O{2]e$  
public final static int QUICK = 5; LsnM5GU7  
public final static int IMPROVED_QUICK = 6; z\,g %u41  
public final static int MERGE = 7; g3%Xh0007{  
public final static int IMPROVED_MERGE = 8; 99@uU[&IJ  
public final static int HEAP = 9; n# %mL<  
u6A ReL 'f  
public static void sort(int[] data) { IRemF@  
sort(data, IMPROVED_QUICK); <|NP!eMsw8  
} 4ey m$UWw  
private static String[] name={ ;[]{O5TB  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :!M/9D*}0  
}; t%e}'?#^  
2<Tbd"x?  
private static Sort[] impl=new Sort[]{ coHzbD~#H  
new InsertSort(), )v-sde\  
new BubbleSort(), 8I)66  
new SelectionSort(), I_('Mr)  
new ShellSort(), 1f]04TI  
new QuickSort(), x1\,WOrmK  
new ImprovedQuickSort(), Fg)Iw<7_2  
new MergeSort(), M1^?_;B  
new ImprovedMergeSort(), 92F (Sl  
new HeapSort() OAMsqeWYA  
}; ,~-"EQT  
8F(lW)An  
public static String toString(int algorithm){ ,BCtNt(  
return name[algorithm-1]; F$UvYy4O d  
} y#5xS  
#Mt'y8|}$  
public static void sort(int[] data, int algorithm) { ugEh}3  
impl[algorithm-1].sort(data); bwG2=  
} ^[no Gjy  
84UH& b'n  
public static interface Sort { G};os+FxF  
public void sort(int[] data); +_tK \MN  
} $R3]y9`?  
P%A^TD|  
public static void swap(int[] data, int i, int j) { IWvLt  
int temp = data; .az +'1  
data = data[j]; 4=S.U`t7  
data[j] = temp; .7Zb,r  
} %e2,p&0G  
} F_o5(`>^  
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