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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。 z9HQFRbo[  
插入排序: K?[pCF2C  
(%#d._j>fZ  
package org.rut.util.algorithm.support; N/{A ' Wd  
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import org.rut.util.algorithm.SortUtil; Ef,@}S  
/** xOT'4v&.  
* @author treeroot ?%Y?z ]L#  
* @since 2006-2-2 2+=|!+f  
* @version 1.0 {]<D"x ;  
*/ YGWb!|Z$  
public class InsertSort implements SortUtil.Sort{ X""'}X|O  
YfMe69/0I  
/* (non-Javadoc) +"3eh1q[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )lw7 W9  
*/ IJ4"X#Q/  
public void sort(int[] data) { e!4akKw4wD  
int temp; u~s'<c+8_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ys#M* {?  
} f{AgKW9"  
} qh7o;x~,  
} hsqUiB tc6  
-m|b2g}"3  
} >t D-kzN  
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冒泡排序: =R>Sxaq  
p,tB  
package org.rut.util.algorithm.support; ,6M-xSDs  
g~B@=R  
import org.rut.util.algorithm.SortUtil; U~H'c p  
^F"*;8$  
/** NWAF4i&$  
* @author treeroot izC>-  
* @since 2006-2-2 gE ,j\M*  
* @version 1.0 =k$d8g ez  
*/ l4/TJ%`MG  
public class BubbleSort implements SortUtil.Sort{ pM46I"  
Q}=RG//0*  
/* (non-Javadoc) $AXz/fGV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zr[~wM  
*/ E`?BaCrG~  
public void sort(int[] data) { /ruf1?\,R  
int temp; )K?GAj]Pq  
for(int i=0;i for(int j=data.length-1;j>i;j--){ L}21[ N~ky  
if(data[j] SortUtil.swap(data,j,j-1); 9Np0<e3p  
} :?UIyN?  
} J,D{dYLDD  
} 9~; Ju^b  
} _yoG<qI  
eAuJ}U[  
} GDcV1$NA  
bv+e'$U3  
选择排序: EmUxM_ T/2  
AN%.LK  
package org.rut.util.algorithm.support; 8@A[ `5  
_bd#C   
import org.rut.util.algorithm.SortUtil; kdHql>0  
:5*<QJuI#A  
/** `UI)H*GA8  
* @author treeroot }fCM_w  
* @since 2006-2-2 IRU2/Ycg  
* @version 1.0 |M?HdxPa  
*/ AO]lXa  
public class SelectionSort implements SortUtil.Sort { X3-1)|g !z  
Kulg84<AwM  
/*  \1MDCP9:  
* (non-Javadoc) \\lC"Z#J`  
* t<k8.9 M$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d5=xOEv; :  
*/ < 5PeI  
public void sort(int[] data) { &7W6IM   
int temp; {S}@P~H =  
for (int i = 0; i < data.length; i++) { }M7kApb>Y  
int lowIndex = i; NN:TT\!v  
for (int j = data.length - 1; j > i; j--) { -Fdi,\e  
if (data[j] < data[lowIndex]) { RnrM rOh  
lowIndex = j; -,;Ep'  
} @j (jOe  
} iN*>Z(b"  
SortUtil.swap(data,i,lowIndex); Vj]kJ,j\y  
} o{he) r6)_  
} (J4utw Z  
uqUo4z5T  
} C|I 1 m  
_+N^yw,r*  
Shell排序: X]fw9tZ  
yq}{6IyZ^  
package org.rut.util.algorithm.support; UIl_& |  
wuk7mIJ  
import org.rut.util.algorithm.SortUtil; vVW=1(QWI#  
j vV8`BQ{  
/** `Ek!;u>  
* @author treeroot c6HU'%v  
* @since 2006-2-2 !{Y#<tG]  
* @version 1.0 ?lK!OyCkc  
*/ /pU6trIM  
public class ShellSort implements SortUtil.Sort{ XNU qZ-M :  
9^^#I ~-  
/* (non-Javadoc) hwzUCh 5!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qX(%Wn;n  
*/ cDiz!n*.q  
public void sort(int[] data) { /;rN/ot2o  
for(int i=data.length/2;i>2;i/=2){ Uot-@|l  
for(int j=0;j insertSort(data,j,i); >, E$bm2  
} m GhJn  
} B`scuLl3  
insertSort(data,0,1); #Qr4Ke$g[l  
} skz]@{38  
mM} Ukmy  
/** RfBb{?PP)  
* @param data qDM[7q3.  
* @param j ql~{`qoD~  
* @param i jw[BtRW  
*/  +Rgw+o  
private void insertSort(int[] data, int start, int inc) { ~(j'a!#Vvk  
int temp; CFm1c1%Hg  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D:E~yh)$-  
}  <%D"eD  
} Sx)Il~ x  
} kI 3zYD^:  
`4H9f&8(  
} 1Wk EPj,  
o#P3lz  
快速排序: n2 mw@Ay!  
pPqN[OJ  
package org.rut.util.algorithm.support; P\4tK<P|  
5\0.[W{^  
import org.rut.util.algorithm.SortUtil; ky[Xf -9#  
{7Avba  
/** qW~ R-g]  
* @author treeroot c^Jgr(Ow  
* @since 2006-2-2 ~H|LWCU)K8  
* @version 1.0 {[5L96RH%  
*/ p=+*g.,O  
public class QuickSort implements SortUtil.Sort{ iM|"H..  
OawrS{  
/* (non-Javadoc) D}/=\J/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "qTC(F9N$.  
*/ DRW.NL o  
public void sort(int[] data) { Ik5jwfz  
quickSort(data,0,data.length-1); 9G&l qfX:  
} :"P hkR  
private void quickSort(int[] data,int i,int j){ H='9zqYZ<W  
int pivotIndex=(i+j)/2; ]jVSsSv  
file://swap L%K_.!d^  
SortUtil.swap(data,pivotIndex,j); LAY)">*49H  
Z!-<rajl  
int k=partition(data,i-1,j,data[j]); bEQtVe@`  
SortUtil.swap(data,k,j); to!W={S<ol  
if((k-i)>1) quickSort(data,i,k-1); gQh Ccv  
if((j-k)>1) quickSort(data,k+1,j); 5Ue^>8-  
U aj`  
} qi SEnRG.  
/** R_Gq8t$  
* @param data ^s@*ISY  
* @param i j t`p<gI  
* @param j UI<PNQvo9  
* @return ;Co[y=Z  
*/ \ ~LU 'j  
private int partition(int[] data, int l, int r,int pivot) { Iwt2}E(e  
do{ V1`5D7Z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); r$r&4d Y  
SortUtil.swap(data,l,r); *2Vp4  
} {{]=zt|69  
while(l SortUtil.swap(data,l,r); ui56<gI-  
return l; 7c29Ua~[  
} QFNz9c  
B) *#g  
} Jl> at  
\Qi#'c$5+a  
改进后的快速排序: l<aqiZSY  
[)H,zpl  
package org.rut.util.algorithm.support; :nKsZ1bX  
7/&C;"  
import org.rut.util.algorithm.SortUtil; wI@zPVY_i  
Lf; ta  
/** -y l4tW  
* @author treeroot FI`nRFq)C  
* @since 2006-2-2 Q+N7:o!;<b  
* @version 1.0 EFRZ% Y  
*/ {(M&-~Yh  
public class ImprovedQuickSort implements SortUtil.Sort { 8g[ (nxI~  
Pe$^Mo.q  
private static int MAX_STACK_SIZE=4096; C`2*2Y%xkG  
private static int THRESHOLD=10; ) ]/i  
/* (non-Javadoc) Iuu<2#gb8"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *#Lsjk~_-  
*/ _@#uIOcE  
public void sort(int[] data) { o\@ A2r3  
int[] stack=new int[MAX_STACK_SIZE]; I 9{40_  
:$M9XZ~\  
int top=-1; l$k]O  
int pivot; yD3bl%uZ  
int pivotIndex,l,r; YW?7*go'Z  
M.xhVgFf)  
stack[++top]=0; #MhNdH#  
stack[++top]=data.length-1; =E [4H  
fqcU5l[v,  
while(top>0){ ;g: UE  
int j=stack[top--]; s6uF5]M;2  
int i=stack[top--]; t4f (Y,v  
KjFZ  
pivotIndex=(i+j)/2; saGRP}7?  
pivot=data[pivotIndex]; qs6Nb'JvQR  
}mKGuCoH>  
SortUtil.swap(data,pivotIndex,j); C1X}3bB  
*F\T}k7  
file://partition a&$Zpf!!  
l=i-1;  OLk9A  
r=j; F^.om2V|9  
do{ DAjG *K{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "XGD:>Q.  
SortUtil.swap(data,l,r); $Cz1C  
} Z B~l2  
while(l SortUtil.swap(data,l,r); 1YJ_1VJ  
SortUtil.swap(data,l,j); cJxW;WI!,  
p+orBw3  
if((l-i)>THRESHOLD){ ?!bd!:(N  
stack[++top]=i; [3t0M5x w  
stack[++top]=l-1; Pv< QjY  
} +mJ :PAy4  
if((j-l)>THRESHOLD){ <\ y!3;  
stack[++top]=l+1; &?SX4c~?u  
stack[++top]=j; FWuw/b$  
} lbQ6 a  
Ap11b|v  
} r0)JUc}Fyq  
file://new InsertSort().sort(data); y\^@p=e  
insertSort(data); 7#~4{rjg  
} ctp?y  
/** "Z;~Y=hC13  
* @param data w?kGi>7E  
*/ MQwIPjk8  
private void insertSort(int[] data) { i~9?:plS  
int temp; tS?a){^:c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bRWIDPh  
} {bT9VZ>  
} hdo&\Q2D8  
} uCw>}3  
lwVk(l Z  
} LyGUvi  
-7k[Vg?  
归并排序: Tak t_N  
Ks#A<! ;=  
package org.rut.util.algorithm.support; 92ZWU2"  
q^5yk=2fq  
import org.rut.util.algorithm.SortUtil; -^yXLa;D  
gdl| ^*tc  
/** 2R~6<W+&:>  
* @author treeroot M~als3  
* @since 2006-2-2 @cZ\*,T  
* @version 1.0 4AQ[igTDP  
*/ u+m4!`  
public class MergeSort implements SortUtil.Sort{ eI^gV'UK  
rOW;yJ[  
/* (non-Javadoc) R<|ejw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W@^J6sH  
*/ sm1;MF]/u  
public void sort(int[] data) { zDB" r  
int[] temp=new int[data.length]; mwIk^Sz]@  
mergeSort(data,temp,0,data.length-1); Axlm<3<wf"  
} q]TqI' o  
dByjcTPA  
private void mergeSort(int[] data,int[] temp,int l,int r){ J_PH7Z*=,  
int mid=(l+r)/2; r?pZ72 q  
if(l==r) return ; *<IR9.~{6%  
mergeSort(data,temp,l,mid); :N2E}hxk  
mergeSort(data,temp,mid+1,r); ]KWK}Zyi  
for(int i=l;i<=r;i++){ qz`rL#W]  
temp=data; !4t`Hv?'  
} :k~dj C  
int i1=l; ?eV_ACpZ8  
int i2=mid+1; /g@^H/DO  
for(int cur=l;cur<=r;cur++){ X'x3esw w  
if(i1==mid+1) V.8%|-d  
data[cur]=temp[i2++]; ]v\^&7pW  
else if(i2>r) T`\]!>eb  
data[cur]=temp[i1++]; mw4JQ\  
else if(temp[i1] data[cur]=temp[i1++]; I^G^J M!  
else BqB |Fo  
data[cur]=temp[i2++]; |n`PESf_  
} zb:kanb-  
} Efx=T$%^&  
{E51Kv&_  
} KQ{Lt?S  
u]M\3V.  
改进后的归并排序: d)tiO2W  
=((yWn+t  
package org.rut.util.algorithm.support; ^"x<)@X  
'Jydu   
import org.rut.util.algorithm.SortUtil; SE)nD@:  
 ?Vc0)  
/** % 5z gd>  
* @author treeroot a9l8{ 3  
* @since 2006-2-2 m5*[t7@%  
* @version 1.0 NYB "jKMk  
*/ I9 &lO/c0  
public class ImprovedMergeSort implements SortUtil.Sort { c -B/~&  
n@ [  
private static final int THRESHOLD = 10; o=_c2m   
=45W\  
/* rF] +,4  
* (non-Javadoc) 9S>g6}[E#0  
* 68e[:wf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H0>yi[2f  
*/ wL3,g2-L  
public void sort(int[] data) { 89H sPB1"t  
int[] temp=new int[data.length]; |m;L?)F<  
mergeSort(data,temp,0,data.length-1); }mk>!B}=  
} `}fw1X5L  
"9XfQ"P  
private void mergeSort(int[] data, int[] temp, int l, int r) { N3%*7{X 9  
int i, j, k; ] fwZAU  
int mid = (l + r) / 2; V.=lGhi  
if (l == r) .L EY=j!-s  
return; uMmXs% 9T  
if ((mid - l) >= THRESHOLD) .=c<>/ 0  
mergeSort(data, temp, l, mid); wC CV2tk  
else : ]WqfR)#  
insertSort(data, l, mid - l + 1); 4kl Ao$  
if ((r - mid) > THRESHOLD) )9L/sKz  
mergeSort(data, temp, mid + 1, r); }6]0hWsN[  
else }]6f+  
insertSort(data, mid + 1, r - mid); p&Ed\aQ%z;  
m3.sVI0I  
for (i = l; i <= mid; i++) { }dYBces  
temp = data; GF$`BGW  
} A''pS  
for (j = 1; j <= r - mid; j++) { M.[rLJZ4  
temp[r - j + 1] = data[j + mid];  P_Hv%g  
} t ^SzqB  
int a = temp[l]; >:1P/U  
int b = temp[r]; UE"GJt`I  
for (i = l, j = r, k = l; k <= r; k++) { ,wAz^cK|  
if (a < b) { o{WyQ&2N  
data[k] = temp[i++]; 1AD]v<M  
a = temp; SA"8!soY3  
} else { q3P+9/6  
data[k] = temp[j--]; (u1m]WYL  
b = temp[j]; #,NvO!j<4  
} 6'-As= iw  
} 3V<&|  
} 19UN*g3(  
I5ZqBB  
/** kHK0(bYK  
* @param data Zjh2{ :  
* @param l +&=?BC}L9^  
* @param i  aSutM  
*/ 8|^CK|m6*  
private void insertSort(int[] data, int start, int len) { R[B?C;+(O  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); SU.ythU2,c  
} gABr@>Vv  
} } ^kL|qmjR  
} s>n(`?@L  
} ~@W*r5/  
BMyzjteS+  
堆排序: 3L5r*fa  
}hpm O-  
package org.rut.util.algorithm.support; p *w$:L  
1GCzyBSbb  
import org.rut.util.algorithm.SortUtil; IH *s8tPc  
?Bi*1V<R  
/** J @IS\9O  
* @author treeroot Xd `vDgD  
* @since 2006-2-2 l@Z6do  
* @version 1.0 }28=  
*/ ?/hZb"6W  
public class HeapSort implements SortUtil.Sort{ ne}+E  
BqK(DH^9N  
/* (non-Javadoc) l`9t}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4'1m4Ugg  
*/ OX]V) QHVZ  
public void sort(int[] data) { e.d #wyeX  
MaxHeap h=new MaxHeap(); xGk6n4Gg  
h.init(data); 7r# ymQ  
for(int i=0;i h.remove(); y[};J vk  
System.arraycopy(h.queue,1,data,0,data.length); _f0C Y"  
} KL,/2 (  
hB;VCg8  
private static class MaxHeap{ bBcp9C)iY  
<6TT)t<h  
void init(int[] data){ VSX@e|Nj  
this.queue=new int[data.length+1]; T=f|,sK +7  
for(int i=0;i queue[++size]=data; Z4K+ /<I  
fixUp(size); w8Q<r.  
} ?4H#G)F  
} k*rZ*sSp  
:'L2J  
private int size=0; UB`ToE|Ii  
wBj-m  
private int[] queue; `$LWmm#  
X r63?N  
public int get() { 4LcX<B U9  
return queue[1];  +ECDD'^!  
} e1myH6$W  
S{]7C?4`  
public void remove() { ZIR0PQh\  
SortUtil.swap(queue,1,size--); N{SQ( %V  
fixDown(1); WO5O?jo'  
} Qp,DL@mp>8  
file://fixdown \`V$ 'B{.  
private void fixDown(int k) { U6ZR->:  
int j; ]M>9ULQ  
while ((j = k << 1) <= size) { J&/lx${  
if (j < size %26amp;%26amp; queue[j] j++; gJiK+&8I  
if (queue[k]>queue[j]) file://不用交换 _mvxsG  
break; 5<pftTcZ  
SortUtil.swap(queue,j,k); ?<&O0'Q  
k = j; AE`We$!  
} 3ya1'qUC  
} lE8&..~l$+  
private void fixUp(int k) { >7`<!YJkK  
while (k > 1) { X=JmF97  
int j = k >> 1; /v|"0  
if (queue[j]>queue[k]) 9//+Bh  
break; p9U?!L!y  
SortUtil.swap(queue,j,k);  XY.5Rno4  
k = j; AsS$C&^  
} TC~Q G$NW  
} 87%*+n:?*  
G&xo1K]  
} E9|eu\  
aV o;~h~  
} <e]Oa$  
etT +  
SortUtil: e~ aqaY~}  
[ xOzzp4  
package org.rut.util.algorithm; zl-2$}<a  
^_t%kmL`  
import org.rut.util.algorithm.support.BubbleSort; RCTQhTy=  
import org.rut.util.algorithm.support.HeapSort; &mj6rIz  
import org.rut.util.algorithm.support.ImprovedMergeSort; )b<k#(i@#  
import org.rut.util.algorithm.support.ImprovedQuickSort; YSJy`  
import org.rut.util.algorithm.support.InsertSort; ]q- g[e'  
import org.rut.util.algorithm.support.MergeSort; PkE5|d*,  
import org.rut.util.algorithm.support.QuickSort; cYx4~V^  
import org.rut.util.algorithm.support.SelectionSort; 4Wy <?O2  
import org.rut.util.algorithm.support.ShellSort; Q9d`zR]  
lf>*Y.!@me  
/** FJ*i\Q/D  
* @author treeroot RT93Mt%P  
* @since 2006-2-2 ,\ 2a=Fp  
* @version 1.0 6Ao%>;e*  
*/ H/M Au7  
public class SortUtil { V._6=ZJ  
public final static int INSERT = 1; !3mA 0-!+  
public final static int BUBBLE = 2; qQpnLV4  
public final static int SELECTION = 3; AC O)Dt(Y  
public final static int SHELL = 4; N=:5eAza  
public final static int QUICK = 5; {T"0DSV   
public final static int IMPROVED_QUICK = 6; G*S|KH  
public final static int MERGE = 7; -~eJn'W  
public final static int IMPROVED_MERGE = 8; U. AjYez  
public final static int HEAP = 9; 7NC=*A~  
OmM=o*d  
public static void sort(int[] data) { w;Q;[:y  
sort(data, IMPROVED_QUICK); S$f6a'  
} k5kdCC0FCk  
private static String[] name={ *A}cL  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Qn ^bVhG+  
}; Oz|K8p  
|AlR^N  
private static Sort[] impl=new Sort[]{ 6"c1;P!4   
new InsertSort(), /h v4x9  
new BubbleSort(), eI1GXQ%  
new SelectionSort(), tb :L\A^:  
new ShellSort(), axHK_1N{  
new QuickSort(), ,>t69 Ad  
new ImprovedQuickSort(), e*+F pW@  
new MergeSort(), %/>xO3"T  
new ImprovedMergeSort(), K1V#cB WO  
new HeapSort() L< zD<M  
}; h^ -. ]Y  
|QV!-LK  
public static String toString(int algorithm){ %>gW9}kB  
return name[algorithm-1]; .(J?a"  
} b':|uu*/  
Z):n c% S  
public static void sort(int[] data, int algorithm) { a[lY S{  
impl[algorithm-1].sort(data); AxxJk"v'y  
} !v]b(z`Y  
v/*Y#(X  
public static interface Sort { %4 \OPw&  
public void sort(int[] data); = 8gHS[  
} ++L?+^h  
M MzGd:0b  
public static void swap(int[] data, int i, int j) { i(? ,6)9  
int temp = data; 1<ro7A4hK  
data = data[j]; U/lM\3v/e  
data[j] = temp; ;n\= R 5.  
} fw oQ' &  
} '8Phxx|  
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