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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。 ax|1b`XUr"  
插入排序: Zj VWxQ  
L1 #Ij#  
package org.rut.util.algorithm.support; r;m`9,RW  
|vILp/"9=W  
import org.rut.util.algorithm.SortUtil; %*W<vu>H  
/** 50~K,Jx6B  
* @author treeroot ^gYD*K!*  
* @since 2006-2-2 g^~Kze  
* @version 1.0 gEJi[E@  
*/ _[K#O,D,  
public class InsertSort implements SortUtil.Sort{ z`U Ukl}T  
c`G&KCw)d  
/* (non-Javadoc) '2nqHX D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e3m*i}K}  
*/ N1x@-/xa|  
public void sort(int[] data) { d,cN(  
int temp; '&yeQ   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jbmTmh1q  
} Y(6Sp'0  
} ..<3%fL3  
} XL5Es:"+?S  
0 f/.>1M=  
} %2l7Hmp4H  
uT_!'l$fr  
冒泡排序: !#x=JX  
;#k-)m%  
package org.rut.util.algorithm.support; q/gB<p9  
G/?~\ }:s  
import org.rut.util.algorithm.SortUtil; <{J5W6  
" I+p  
/** ofdZ1F  
* @author treeroot 6}dR$*=  
* @since 2006-2-2 l]_=:)" ]  
* @version 1.0 )TmtSSS  
*/ 3,eIB(  
public class BubbleSort implements SortUtil.Sort{ ma& To=  
"Ty/k8?  
/* (non-Javadoc) ,FQK;BU!lh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NAr1[{^E,  
*/ d&(_|xq#  
public void sort(int[] data) { n$)_9:Z-j  
int temp; Mz=!w]qDH  
for(int i=0;i for(int j=data.length-1;j>i;j--){ HOi C  
if(data[j] SortUtil.swap(data,j,j-1); \\4Eh2 Y  
} A74920X`W  
} ,|T7hTn=  
} Z)"61) )  
} t+TYb#Tc  
`\Unpp\I  
} s8gU7pT49  
0b|zk <  
选择排序: >G"X J<IO  
Y}STF  
package org.rut.util.algorithm.support; cO#oH2}  
*r,b=8|  
import org.rut.util.algorithm.SortUtil; \f Lvw  
r/:%}(7;  
/** 2>PH 8  
* @author treeroot 'r} fZ  
* @since 2006-2-2 p@Q5b}xCG_  
* @version 1.0 @gfDp<  
*/ RW7(r/C  
public class SelectionSort implements SortUtil.Sort { 7C,T&g 1:  
IB5BO7J  
/* ;N=G=X|}  
* (non-Javadoc) n!ok?=(kQ  
* SZ!=`a]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [`_io>*g  
*/ :+&AY2`  
public void sort(int[] data) { -$a>f4]  
int temp; 0@=MOGQb  
for (int i = 0; i < data.length; i++) { H AB#pd9  
int lowIndex = i; $#NQ <3  
for (int j = data.length - 1; j > i; j--) { F} DUEDND*  
if (data[j] < data[lowIndex]) { eiMH['X5  
lowIndex = j; 6[dur'x  
} @,H9zrjVFZ  
} u5E]t9~Pq  
SortUtil.swap(data,i,lowIndex); Rm>^tu -  
} j|(Z#3J  
} c6AWn>H  
]$iN#d|ZU  
} Tupiq  
(Xx n\*S  
Shell排序: n&XGBwgW  
Qvoqx>2p5  
package org.rut.util.algorithm.support; g"8 .}1)~r  
0~gO'*2P  
import org.rut.util.algorithm.SortUtil; NucM+r1P  
+|RB0}hFS-  
/** 3{Q,h pZN  
* @author treeroot  lhLGG  
* @since 2006-2-2 7v"lNP-?jU  
* @version 1.0 3sm M,fi  
*/ ": ;@Hnb/  
public class ShellSort implements SortUtil.Sort{ i6PM<X,{;  
'/%zi,0  
/* (non-Javadoc) UVu DQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )mcEQ-!b  
*/ fys  
public void sort(int[] data) { MXh "Y*}  
for(int i=data.length/2;i>2;i/=2){ ]Yyia.B  
for(int j=0;j insertSort(data,j,i); X]*QUV]i  
} |;vi*u  
} Sfjje4R  
insertSort(data,0,1); K`KLC.j  
} _7)F ?  
v90T{1+M|4  
/** j2n,f7hl.  
* @param data O}ejWP8>  
* @param j ) M<vAUF  
* @param i 'ktHPn ,K  
*/ Z@rN_WXx  
private void insertSort(int[] data, int start, int inc) { u=l1s1>  
int temp; JiS5um=(.  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); x;E2~&E  
} Cpl;vQ  
} ]`=X'fED  
} ] Uc`J8p,  
quu*xJ;Ci  
} \+PIe7f_  
BN_7Ay/k  
快速排序: 5i So8*9}  
(Ye>Cp+]  
package org.rut.util.algorithm.support; jx`QB')kX  
O9h+Q\0\W  
import org.rut.util.algorithm.SortUtil; gPC@Yy  
W0`Gc {  
/** H:{7X1bV  
* @author treeroot {{yt*7k{  
* @since 2006-2-2 Owv +1+B  
* @version 1.0 YoODR  
*/ QL7>;t;  
public class QuickSort implements SortUtil.Sort{ Hgc=M  
W  0[N0c  
/* (non-Javadoc) Uu p(6`7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !^fa.I'mM  
*/ 9l/EjF^  
public void sort(int[] data) { r4 dOK] 0  
quickSort(data,0,data.length-1); 6vzk\n  
} \>/M .2  
private void quickSort(int[] data,int i,int j){ HRa@  
int pivotIndex=(i+j)/2; rp34?/Nz  
file://swap &lc8G  
SortUtil.swap(data,pivotIndex,j); L):qu  
[Gr*,nVvB  
int k=partition(data,i-1,j,data[j]); y6HuN  
SortUtil.swap(data,k,j); Bstk{&ew  
if((k-i)>1) quickSort(data,i,k-1); $So%d9k  
if((j-k)>1) quickSort(data,k+1,j); +{`yeZ9S  
w=b(X q+:  
} *<V^2z$y_  
/**  3yS  
* @param data ni CE\B~  
* @param i 4g _"ku  
* @param j Lm)\Z P+W  
* @return 5MxL*DB=b  
*/ @$@mqHI}  
private int partition(int[] data, int l, int r,int pivot) { %,*$D} H  
do{ {==pZpyyh  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =(r* 5vd  
SortUtil.swap(data,l,r); $6f\uuTU2"  
} D$k8^Vs  
while(l SortUtil.swap(data,l,r); vFmJ;J  
return l; vxlOh.a|/L  
} wzcai 0y*  
USML~]G z  
} 0(>rG{u  
ph:3|d  
改进后的快速排序: Mio>{%/  
g9h(sLSF  
package org.rut.util.algorithm.support; h+7>#*DH  
XFZ~ #DT&  
import org.rut.util.algorithm.SortUtil; }2>"<)  
qB6dFl\ (  
/** <|6%9@  
* @author treeroot 0&Gl@4oZ"  
* @since 2006-2-2 M++0zhS  
* @version 1.0 y&T&1o  
*/ (g8*d^u#PO  
public class ImprovedQuickSort implements SortUtil.Sort { |KCOfVh?|.  
m7]hJ,0  
private static int MAX_STACK_SIZE=4096; [G|mY6F^  
private static int THRESHOLD=10; Y#V8(DTyH  
/* (non-Javadoc) P<dy3 ;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !4#"!Md4o  
*/ DtCEm(b0  
public void sort(int[] data) { 8pZ< 9t'  
int[] stack=new int[MAX_STACK_SIZE]; t@zdm y  
'w/qcD-  
int top=-1; 2i=H"('G)+  
int pivot; PK6iY7Qp)  
int pivotIndex,l,r; #} ,x @]p  
~XM[>M\qB  
stack[++top]=0; 8}p8r|d!ls  
stack[++top]=data.length-1; <EX7WA  
|(IO=V4P  
while(top>0){ 0OZMlt%z  
int j=stack[top--]; LC69td&  
int i=stack[top--]; .=R lOK  
!F4;_A`X  
pivotIndex=(i+j)/2; JMV50 y  
pivot=data[pivotIndex]; 3 pWM~(#>-  
H -t|i  
SortUtil.swap(data,pivotIndex,j); {Q (}DI  
:>3=gex@^0  
file://partition &K%aw  
l=i-1; SOh-,c\C  
r=j; E$\~lcq  
do{ 8^ep/b&|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); lvSdY(8  
SortUtil.swap(data,l,r); *MM#Z?mP  
} >=,ua u7  
while(l SortUtil.swap(data,l,r); nL `9l1  
SortUtil.swap(data,l,j); I`B'1"{  
iDb;_?  
if((l-i)>THRESHOLD){ xp \S2@<  
stack[++top]=i; u</8w&!  
stack[++top]=l-1; I+?hG6NM  
} rs8\)\z  
if((j-l)>THRESHOLD){ B&KL2&Z~Pq  
stack[++top]=l+1; {ShgJ ;! Q  
stack[++top]=j; mB 55PYA  
} 3Kq`<B~%  
\{|ImCH  
} 9(1rh9`=  
file://new InsertSort().sort(data); #*$p-I=  
insertSort(data);  !rL<5L  
} kEN#u  
/** %CH6lY=lI  
* @param data ]?l{j  
*/ O12Q8Oj!0  
private void insertSort(int[] data) { @"87F{!  
int temp; *YV S|6bs  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4cgIEw[6  
} 0irr7Y  
} ROAI9sW0  
} v|t{1[C  
?m%h`<wgMc  
} %e%7oqR?  
_^!vCa7f  
归并排序: Opg#*w%-  
[ = M%  
package org.rut.util.algorithm.support; 4jwu'7 Q  
= 7/-i  
import org.rut.util.algorithm.SortUtil; = 1|"-  
[Eq<":)  
/** d "<F!?8  
* @author treeroot [s6C ZcL  
* @since 2006-2-2 7!4V >O8@  
* @version 1.0 >.%4~\U  
*/ Epjff@ 7A  
public class MergeSort implements SortUtil.Sort{ @PkJY  
E%pz9gcSx  
/* (non-Javadoc) H oy7RC&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RIy\u >  
*/ r|Zi3+  
public void sort(int[] data) { 7Ua7A  
int[] temp=new int[data.length]; Zr/r2  
mergeSort(data,temp,0,data.length-1); gQVBA %  
} e1(h</MU2  
RXSf,O  
private void mergeSort(int[] data,int[] temp,int l,int r){ __N.#c/l{  
int mid=(l+r)/2; !vqC+o>@  
if(l==r) return ; Jbw!:x [  
mergeSort(data,temp,l,mid); s;.=5wcvi?  
mergeSort(data,temp,mid+1,r); R,0Oq5  
for(int i=l;i<=r;i++){ $Xf(^K  
temp=data; G2Qjoe`Uc  
} DZ`k[Z.VZ  
int i1=l; :F(9"L  
int i2=mid+1; LJuW${Y  
for(int cur=l;cur<=r;cur++){ 8C&x MA^  
if(i1==mid+1) 9C}qVoNu  
data[cur]=temp[i2++];  &"S/Lt  
else if(i2>r) ?S`>>^  
data[cur]=temp[i1++]; \9m*(_Qf  
else if(temp[i1] data[cur]=temp[i1++]; /=T"=bP#/  
else L]-w;ll-  
data[cur]=temp[i2++]; ;iX<`re~  
} x mo&![P  
} 3)E(RyQA3  
*g7DPN$aQ  
} gY5l.&  
o0Gx%99'  
改进后的归并排序: ;sQbn|=e"  
@EZ>f5IO+  
package org.rut.util.algorithm.support; C3"&sdLb$  
$G";2(-k  
import org.rut.util.algorithm.SortUtil; gA:TL{X0  
bx;f`8SN  
/** tbur$ 00  
* @author treeroot {*xBm#  
* @since 2006-2-2 ejcwg*i  
* @version 1.0 3wt  
*/ (2txM"Dja  
public class ImprovedMergeSort implements SortUtil.Sort { PZOORjF8A  
~"7J}[i 5  
private static final int THRESHOLD = 10; fPQ|e"?  
F=Y S^  
/* )/Y~6A9>  
* (non-Javadoc) f%Ke8'&  
* UxqWnHH.`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q1V2pP+=@  
*/ /~hbOs/ L  
public void sort(int[] data) { 2VYvO=KA  
int[] temp=new int[data.length]; UKs$W`  
mergeSort(data,temp,0,data.length-1); g [L  
} htHv&  
TA;,>f*  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]N}]d +^6  
int i, j, k; Q_}n%P:u  
int mid = (l + r) / 2; j jY{Uq  
if (l == r) 9q|7<raS  
return;  P\(30  
if ((mid - l) >= THRESHOLD) Lk nVqZ|k  
mergeSort(data, temp, l, mid); iZTa>@   
else yYX :huw  
insertSort(data, l, mid - l + 1); <Cq"| A  
if ((r - mid) > THRESHOLD) Z<]VTo  
mergeSort(data, temp, mid + 1, r); ua#K>su r.  
else `]>on`n?  
insertSort(data, mid + 1, r - mid); VO-784I  
qZsnd7o{l.  
for (i = l; i <= mid; i++) { VkXn8J  
temp = data; w%u5<  
} n-OWwev)  
for (j = 1; j <= r - mid; j++) { .<w)Bmh  
temp[r - j + 1] = data[j + mid]; !sK#zAR2  
} DQ_ 2fX~)  
int a = temp[l]; !R{em48D  
int b = temp[r]; r$DZkMue  
for (i = l, j = r, k = l; k <= r; k++) { BE4\U_]a3  
if (a < b) { NbDda/7ki  
data[k] = temp[i++]; ZNy9_a:dX  
a = temp; I9/KM4&  
} else { %UG/ak%z  
data[k] = temp[j--]; )E~mJln  
b = temp[j]; t aV|YP$  
} F@^N|;_2  
} PP4d?+;V  
} 5"2@NL  
=1Sy@MbH3  
/** MB O,\t.  
* @param data ;tr)=)q &  
* @param l Rp4FXR jC  
* @param i gMay  
*/ 9:\A7 =  
private void insertSort(int[] data, int start, int len) { D pNX66O  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O3xz|&xY&  
} m)k-uWc$C  
} I}%mfojC  
} }K;iJ~kD1  
} %&1$~m0  
E7 L bSZ  
堆排序: hg&u0AQ2  
hXnw..0"  
package org.rut.util.algorithm.support; gix>DHq$k  
p XNtN5@FQ  
import org.rut.util.algorithm.SortUtil; Cz[5Ug'V  
~Jxlj(" 0(  
/** B3 .X}ys#  
* @author treeroot `&,_xUA  
* @since 2006-2-2 /J.0s0 @  
* @version 1.0 (zEYpTp  
*/ |rFJ*.nD  
public class HeapSort implements SortUtil.Sort{ i&pMF O  
Ej5^Y ?-6  
/* (non-Javadoc) #:I^&~:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !p"Kd ~  
*/ (xQI($Wq*M  
public void sort(int[] data) { fv/v|  
MaxHeap h=new MaxHeap(); -s33m]a;  
h.init(data); <>?^4NC<M  
for(int i=0;i h.remove(); L:^Y@[f  
System.arraycopy(h.queue,1,data,0,data.length); QU%N*bFW%P  
} Ks51:M  
'Ye]eL,I\  
private static class MaxHeap{ F]0Jwm{  
WS5"!vz   
void init(int[] data){ - BjEL;  
this.queue=new int[data.length+1]; /rOnm=P+Q  
for(int i=0;i queue[++size]=data; Y` q!V=  
fixUp(size); w&9F>`VET  
} d(\1 } l  
} m]e0X*Kg  
vj(@.uU)  
private int size=0; sgD@}":m  
@21u I{  
private int[] queue; L*IU0Jy>  
+Bn?-{h=  
public int get() { nE^wxtY  
return queue[1]; k=FcPF"  
} pBvo M={2!  
W*3o|x   
public void remove() { DWdLA~'t  
SortUtil.swap(queue,1,size--); JqQ3C}z  
fixDown(1); a0)vvo=bz  
} &'NQ)Dn  
file://fixdown %qONJP  
private void fixDown(int k) { )v};C<  
int j; "wF*O"WQo  
while ((j = k << 1) <= size) {  L2k;f]  
if (j < size %26amp;%26amp; queue[j] j++; {.cB>L  
if (queue[k]>queue[j]) file://不用交换 >*Sv0#  
break; )'w]YIv9  
SortUtil.swap(queue,j,k); @ljZw(  
k = j; U:J /\-  
} ]m RF[b$  
} }@3$)L%n_u  
private void fixUp(int k) { :^K~t!@  
while (k > 1) { %odw+PhO  
int j = k >> 1; xL|?(pQ/BK  
if (queue[j]>queue[k]) Mi<*6j0  
break; i4 P$wlO  
SortUtil.swap(queue,j,k); =SA 4\/  
k = j; Bk@bN~B4  
} |%n|[LP'  
} 3SmqXPOw  
7Zhli Y1  
} |_!PD$i-  
{6ajsy5=  
} 9'D8[p%  
KX]-ll  
SortUtil: zj%cd;  
9]"\"ka3>  
package org.rut.util.algorithm; bx1G CD  
pVdhj^n  
import org.rut.util.algorithm.support.BubbleSort; kWI]fZ_n  
import org.rut.util.algorithm.support.HeapSort; U9bFUK/z  
import org.rut.util.algorithm.support.ImprovedMergeSort; kVy"+ZebK  
import org.rut.util.algorithm.support.ImprovedQuickSort; >>/nuWdpO  
import org.rut.util.algorithm.support.InsertSort; "sC$%D<oc  
import org.rut.util.algorithm.support.MergeSort; \? J=mE@;1  
import org.rut.util.algorithm.support.QuickSort; _CHKh*KHML  
import org.rut.util.algorithm.support.SelectionSort; t!NrB X  
import org.rut.util.algorithm.support.ShellSort; (q055y  
k&n\ =tKN  
/** 4U_rB9K$  
* @author treeroot o-~-F+mj#  
* @since 2006-2-2 gGF$M `  
* @version 1.0 ^.nwc#  
*/ ?SBh^/zf  
public class SortUtil { Kw)C{L5a  
public final static int INSERT = 1; w;@`Yi.WQ  
public final static int BUBBLE = 2; goG] WGVr  
public final static int SELECTION = 3; bDxPgb7N=  
public final static int SHELL = 4; 1 OuSH+  
public final static int QUICK = 5; ^Z#<tN;  
public final static int IMPROVED_QUICK = 6; ]%b0[7[  
public final static int MERGE = 7; ?U7&R%Lh`  
public final static int IMPROVED_MERGE = 8; n\~"Wim<b  
public final static int HEAP = 9; }S Y`KoC1  
a g|9$  
public static void sort(int[] data) { BF@m )w.v  
sort(data, IMPROVED_QUICK); F^4*|g  
} KB$ vQ@N  
private static String[] name={ ;""-[4C  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" f J,8g/f8  
}; F[Qsv54  
C6Um6 X9/i  
private static Sort[] impl=new Sort[]{ ZS07_6.~  
new InsertSort(), g`y/ _  
new BubbleSort(), b#bO=T$e-  
new SelectionSort(), 89 _&X[X  
new ShellSort(), #MmmwPB_  
new QuickSort(), J$o[$G_Z  
new ImprovedQuickSort(), 1',+&2)oj  
new MergeSort(), k i~Raa/e  
new ImprovedMergeSort(), ":5~L9&G  
new HeapSort() VKl~oFKXJ  
}; H J2O@e  
h5h-}qBA  
public static String toString(int algorithm){ 1"87EP   
return name[algorithm-1]; _Eet2;9  
} C`=`Ce~|d  
3/]f4D{MMY  
public static void sort(int[] data, int algorithm) { -K{\S2  
impl[algorithm-1].sort(data); #$9U=^Z[  
} 2nOe^X!*  
9 &?tQ"@x  
public static interface Sort { ^v()iF !  
public void sort(int[] data); \J#I}-a&j  
} ^/4 {\3  
?,A8  fR  
public static void swap(int[] data, int i, int j) { n=<q3}1Jej  
int temp = data; ,58kjTM  
data = data[j]; 'dd<<E  
data[j] = temp; XmE_F  
} ]}*G[[ ^p  
} +LvZ87O^~  
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