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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。 AMc`qh  
插入排序: C^nTLw;K  
QW_W5|_  
package org.rut.util.algorithm.support; #wfb-`,5&9  
{=<m^ 5b9  
import org.rut.util.algorithm.SortUtil; C,nU.0  
/** H:.l:PJ  
* @author treeroot ]6z ; M;F`  
* @since 2006-2-2 b]Z>P{ j  
* @version 1.0 q ,*([yX  
*/ }WEF *4B!  
public class InsertSort implements SortUtil.Sort{ c<]~q1  
S)vNWBO  
/* (non-Javadoc) =SLCG.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hO0g3^  
*/ S F&EVRv  
public void sort(int[] data) { -VkPy<)  
int temp; ioJr2wq6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z^r? MX/  
} T9&bY>f?  
} <}bF49z  
} ##|]el%Y  
aF%V  
} f'%Pkk  
iBaz1pDc  
冒泡排序: dI) 9@UL  
X^9eCj;c  
package org.rut.util.algorithm.support; &M*f4PeXb  
HAc1w]{(  
import org.rut.util.algorithm.SortUtil; Bd>a"3fA  
p5JRG2zt  
/** %rq/&#jC  
* @author treeroot =Bw2{]w  
* @since 2006-2-2 zt/N)5\V  
* @version 1.0 T7~Vk2o%(  
*/ DBk]2W|i  
public class BubbleSort implements SortUtil.Sort{ POt 8G  
vbSycZ2M7  
/* (non-Javadoc) o2W^!#]=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ! ,&{1p  
*/ =uD^#AX  
public void sort(int[] data) { ?<6yKxn  
int temp; ;cp,d~mrf  
for(int i=0;i for(int j=data.length-1;j>i;j--){ XG}9) fT  
if(data[j] SortUtil.swap(data,j,j-1); =9L1Z \f  
} wi@Qf6(mn  
} 'rDai [  
} p-JGDjR0G  
} 6"<q{K  
tl+ 9SBl  
} -8m3L  
9q_c`  
选择排序: Ji7<UJ30x  
!i5~>p|4@  
package org.rut.util.algorithm.support; MyaJhA6c  
V3c7F4\  
import org.rut.util.algorithm.SortUtil; yrQf PR  
s0*@zn>h  
/** eq,`T;  
* @author treeroot #gSLFM{p  
* @since 2006-2-2 <Xl/U^B  
* @version 1.0 qUKSo9  
*/ G*%:"qleT$  
public class SelectionSort implements SortUtil.Sort { ~NG+DyGa=  
^j]_MiA4  
/* w'7=CzfYn  
* (non-Javadoc) 5Sx.'o$  
* B\Uocn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lL"ANlX-P  
*/ ki'CW4x  
public void sort(int[] data) { !8OgaMngzF  
int temp; -~v1@  
for (int i = 0; i < data.length; i++) { &AP`k  
int lowIndex = i; ndS8p]P&o(  
for (int j = data.length - 1; j > i; j--) { Ri;_ 8v[H|  
if (data[j] < data[lowIndex]) { Aqo90(jffx  
lowIndex = j; r>cN,C  
} 7mtX/w9  
} ?,^ Aoy  
SortUtil.swap(data,i,lowIndex); 1"UHe*2  
} z4{ :X Da  
} 5]~4 51  
oMHTB!A=2  
} j9~lf  
]Gf`nJDV  
Shell排序: lb\VQZp!y  
4Be\5Byr  
package org.rut.util.algorithm.support; D hD^w;f]  
D";@)\jN  
import org.rut.util.algorithm.SortUtil; ^]MLEr!S  
' wni.E&  
/** h&2l0 |8k  
* @author treeroot fi  [4F  
* @since 2006-2-2 %jn)=;\  
* @version 1.0 u7lO2 C7  
*/ k8z1AP  
public class ShellSort implements SortUtil.Sort{ -{A*`.[v  
D|$Fw5!^k6  
/* (non-Javadoc) y_r(06"z1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (!%9#  
*/ M< /  
public void sort(int[] data) { ;@xlrj+  
for(int i=data.length/2;i>2;i/=2){ 4d\V=_);r  
for(int j=0;j insertSort(data,j,i); Ui.S)\B  
} DB3qf>@?  
} nM|F MK^  
insertSort(data,0,1); Vh N6 oI  
} EO%"[k  
?OS0.  
/** a'(B}B=h  
* @param data Vrs?VA`v$  
* @param j qyP={E9A  
* @param i ZlP+t>  
*/ X}H?*'-  
private void insertSort(int[] data, int start, int inc) { U=PTn(2  
int temp; ^@^K <SVc  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `T{'ufI4B  
} hlmeT9v{  
} @MO/LvD  
} V.Tn1i-v  
PU8dr|!  
}  fj'7\[nZ  
3,-[lG@o  
快速排序: 1Eb2X}XC  
b8E7/~<z3  
package org.rut.util.algorithm.support; Bk[C=<X  
J";4+wA7  
import org.rut.util.algorithm.SortUtil; < n/ 2  
}$i/4?dYsQ  
/** 9}5o> iR  
* @author treeroot VS>xvF  
* @since 2006-2-2 1!NrndJI  
* @version 1.0 }=Ul8 <  
*/ .wB'"z8L  
public class QuickSort implements SortUtil.Sort{ c(aykIVOo  
6V*,nocL_+  
/* (non-Javadoc) ,Oe:SZJ>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F^81?F i.  
*/ 1) 5$,+~lL  
public void sort(int[] data) { nc6PSj X  
quickSort(data,0,data.length-1); 8OiCldw:HN  
} Jv}&8D  
private void quickSort(int[] data,int i,int j){ 51Vqbtj^  
int pivotIndex=(i+j)/2; "6 ~5RCZ  
file://swap <w`EU[y_  
SortUtil.swap(data,pivotIndex,j); _ s*p$/V\  
.><-XJ  
int k=partition(data,i-1,j,data[j]); -Aojk8tc  
SortUtil.swap(data,k,j); D -d  
if((k-i)>1) quickSort(data,i,k-1); x#gZC 1$Y  
if((j-k)>1) quickSort(data,k+1,j); fUr%@&~l^  
<@P. 'rE  
} LosRjvQ:  
/** xkv%4H>  
* @param data XJ5@/BW  
* @param i '6; {DX  
* @param j [S1 b\f#  
* @return \*[DR R0  
*/ huW,kk<]y  
private int partition(int[] data, int l, int r,int pivot) { hQ'W7EF  
do{ YmOj.Q&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ea]qX6)UZ  
SortUtil.swap(data,l,r); $JUkw sc  
} ja9=b?]0,  
while(l SortUtil.swap(data,l,r); S`$%C=a.  
return l; x-]:g&5T  
} t+_\^Oa)  
D|ra ;d  
} (cyvE}g  
;dPaWS1D  
改进后的快速排序: U!NuiKaQ26  
zXD/hM  
package org.rut.util.algorithm.support; h8X[*Wme  
lrj&60R`w  
import org.rut.util.algorithm.SortUtil; bv VkN  
b $yIM  
/** &>]U c%JK  
* @author treeroot 6~Dyr82"B  
* @since 2006-2-2 e^oGiL ~  
* @version 1.0 Yxbg _RQm  
*/ T*%rhnTv0  
public class ImprovedQuickSort implements SortUtil.Sort { eh> |m> JY  
r}es_9*~Z  
private static int MAX_STACK_SIZE=4096; YC')vv3o(  
private static int THRESHOLD=10; H6{Bx2J1*  
/* (non-Javadoc) M[~{!0Uz g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7e\Jg/FU  
*/ JsNj!aeU%  
public void sort(int[] data) { qS9<_if2  
int[] stack=new int[MAX_STACK_SIZE]; D'vaK89\  
3&CV!+z  
int top=-1; WMC\J(@.  
int pivot;  %S%IW  
int pivotIndex,l,r; #/o~h|g  
uAqiL>y  
stack[++top]=0; }79O[&  
stack[++top]=data.length-1; T~k@Z  
-gm5E qi  
while(top>0){ -fXQ62:S  
int j=stack[top--]; 9!(%Vf>  
int i=stack[top--]; yo/;@}g}  
g'b|[ q  
pivotIndex=(i+j)/2; K4jHha  
pivot=data[pivotIndex]; ge(,>xB  
1G7l+6w5~^  
SortUtil.swap(data,pivotIndex,j); jU~ x^Y  
e5 L_<V^Jo  
file://partition #-@Uq6Y  
l=i-1; DH%PkGn  
r=j; ]WYV  
do{ `FQ]ad Fz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >~nr,V.q  
SortUtil.swap(data,l,r); yvj/u c  
} NLK1IH#  
while(l SortUtil.swap(data,l,r); T[)!7@4r  
SortUtil.swap(data,l,j); ,h*N9}xYTi  
rJkJ/9s  
if((l-i)>THRESHOLD){ :\JCxS=EW  
stack[++top]=i; 0FtwDM))  
stack[++top]=l-1; zWhj >Za  
} YLi6G Y  
if((j-l)>THRESHOLD){ ;Mo_B9  
stack[++top]=l+1; p]EugLEmG  
stack[++top]=j; \*=wm$p&*  
} 9?MzIt  
nj:w1E/R  
} "3\y~<8%'  
file://new InsertSort().sort(data); ||>4XDV#  
insertSort(data); hNsi  8/  
} w2UEU5%  
/** *U,J Q  
* @param data `_)H aF>/  
*/ vQyY %  
private void insertSort(int[] data) { ^!\AT!OT  
int temp; JPAjOcmU/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g i6s+2  
} fs 2MYat  
} l=p_  
} 4NW!{Vw ,  
'E9{qPLk(  
} h{iuk3G`h6  
wpuK?fP  
归并排序: 6ICW>#fI`  
! #_2 ![  
package org.rut.util.algorithm.support; o+&Om~W  
JR#4{P@A  
import org.rut.util.algorithm.SortUtil; j :B/ FL  
uR :EH.K  
/** R%RxF=@  
* @author treeroot &TBFt;  
* @since 2006-2-2 oG1zPspL  
* @version 1.0 WM?-BIlT=  
*/ W/bW=.d Jd  
public class MergeSort implements SortUtil.Sort{ - [h[  
F0p=|W  
/* (non-Javadoc) X':FFD4h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ajm!;LA[jO  
*/ } LS8q  
public void sort(int[] data) { EN\cwa#FU  
int[] temp=new int[data.length]; (&Rk#iU 2  
mergeSort(data,temp,0,data.length-1); NGSts\D'}  
} d/ ^IL*O  
/]3[|  
private void mergeSort(int[] data,int[] temp,int l,int r){ QR#>Ws  
int mid=(l+r)/2; k\ .9iI'6  
if(l==r) return ; t_jn-Idcf  
mergeSort(data,temp,l,mid); Rtz~:v%  
mergeSort(data,temp,mid+1,r); u6Gqg(7hw  
for(int i=l;i<=r;i++){ FHQ`T\fC$@  
temp=data; Au'y(KB  
} %rG4X  
int i1=l; k3qQU)  
int i2=mid+1; vvv'!\'#  
for(int cur=l;cur<=r;cur++){ yiQ?p:DM  
if(i1==mid+1) N'VTdf?  
data[cur]=temp[i2++]; ?-<lIF Fh  
else if(i2>r) P.XT1)qo*  
data[cur]=temp[i1++]; T,/rC{  
else if(temp[i1] data[cur]=temp[i1++]; f(w>(1&/B  
else O'wmhLa"W  
data[cur]=temp[i2++]; h'-4nu;*  
} 8C@u+tx  
} / S]RP>cQ  
;7z6B|8  
} ?'TK~,dG/  
isL zgN%  
改进后的归并排序: q7Hf7^a  
_x<NGIz  
package org.rut.util.algorithm.support; g77M5(ME  
sQ#e 2  
import org.rut.util.algorithm.SortUtil; hz4?ku  
U_"!\lI_yg  
/** }8x+F2i  
* @author treeroot "a)6g0gw  
* @since 2006-2-2 " _2 k 3  
* @version 1.0 y<Q"]H.CkQ  
*/ uVn"L:_  
public class ImprovedMergeSort implements SortUtil.Sort { Ah wi  
sWo`dZ\6WB  
private static final int THRESHOLD = 10; |ZH(Z}m  
'-%1ILK$3r  
/* .@,t}:lD  
* (non-Javadoc) d#0:U Y%~  
* z9ADF(J?0'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]@Zv94Z(  
*/ 6i[Ts0H%<!  
public void sort(int[] data) { >NBc-DX^  
int[] temp=new int[data.length]; 'Nl hLu  
mergeSort(data,temp,0,data.length-1); nU>P%|loXx  
} pNb2t/8%%  
gQ{ #C'  
private void mergeSort(int[] data, int[] temp, int l, int r) { PK2;Ywk`  
int i, j, k; 6h>#;M  
int mid = (l + r) / 2; ;bB#P g  
if (l == r) }CBQdH&g;  
return; ?z9!=A%<V~  
if ((mid - l) >= THRESHOLD) Pz2 b  
mergeSort(data, temp, l, mid); wu.l-VmGp)  
else [j0[c9.p [  
insertSort(data, l, mid - l + 1); +=8wZ]  
if ((r - mid) > THRESHOLD) e%JIqKS  
mergeSort(data, temp, mid + 1, r); eT".psRiC  
else K|Sq_/#+U  
insertSort(data, mid + 1, r - mid); *,$5EN  
>8(i;)(3  
for (i = l; i <= mid; i++) { 4]U=Y>\Sr  
temp = data; 4[$:KGh3  
} _U^[h!  
for (j = 1; j <= r - mid; j++) { Xk4wU$1F  
temp[r - j + 1] = data[j + mid]; $K^l=X  
} #h[>RtP:  
int a = temp[l]; (I}owr5:  
int b = temp[r]; $os]$5(  
for (i = l, j = r, k = l; k <= r; k++) { ;Sivu-%  
if (a < b) { %1Q:{m  
data[k] = temp[i++]; 0A) 0Zw  
a = temp; V8M()7uJ  
} else { Qfm$q~`D^W  
data[k] = temp[j--]; "@nH;Xlq  
b = temp[j]; 4?+K `  
} l/G +Xj4M  
} dxs5woP  
} %VO+\L8Fs  
'Bue*  
/** d%8n   
* @param data Nbpn"*L,  
* @param l dBXiLrEbs  
* @param i [~{F(Le  
*/ 1nAm\/&  
private void insertSort(int[] data, int start, int len) { rC-E+%y  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U80=f2  
} ,j*9)  
} i=Qy?aU?  
} '8;bc@cE  
} |_TiF ;^  
> ubq{'  
堆排序: 7\ _MA!:<  
h=A  
package org.rut.util.algorithm.support; "b hK %N;  
Nnh\FaI  
import org.rut.util.algorithm.SortUtil; NuQ!huh  
s>J5.Z7"'j  
/** -MTk9<qnT  
* @author treeroot #"UO`2~`l  
* @since 2006-2-2 wG,"X'1  
* @version 1.0 MR1I"gqE}I  
*/ 2#.s{Bv  
public class HeapSort implements SortUtil.Sort{ %P0  
0&,D&y%  
/* (non-Javadoc) hQ@k|3=Re  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Xd"'cXw  
*/ \}jA1oy  
public void sort(int[] data) { 3*h"B$g!  
MaxHeap h=new MaxHeap(); lJdBUoO  
h.init(data); (fF8)4l  
for(int i=0;i h.remove(); wo0j/4o  
System.arraycopy(h.queue,1,data,0,data.length); :PT{>r[  
} =>;&M)+q  
&4-;;h\H  
private static class MaxHeap{ 8 MO-QO  
+F)-n2Bi  
void init(int[] data){ ./F:]/Mt  
this.queue=new int[data.length+1]; =5\*Zh1  
for(int i=0;i queue[++size]=data; Xq;|l?,O  
fixUp(size); \|0z:R;X  
} w7@`:W  
} N#ggT9>X  
i3w~&y-  
private int size=0; QJ XP -  
<<0sv9qw1  
private int[] queue; \\k=N(n  
<Z%=lwtX  
public int get() { G3DgB!  
return queue[1]; ov_l)vt  
} G`FYEmD  
I}_}VSG(  
public void remove() { BY~Tc5  
SortUtil.swap(queue,1,size--); vIRT$W' O}  
fixDown(1); fxd+0R;f  
} '[WL8,.Q  
file://fixdown 9f! M1  
private void fixDown(int k) { vxmX5.  
int j; }:2##<"\t  
while ((j = k << 1) <= size) { ^m#tWb)f  
if (j < size %26amp;%26amp; queue[j] j++; T [SK>z  
if (queue[k]>queue[j]) file://不用交换 )h}IZSm  
break; *S}@DoXS  
SortUtil.swap(queue,j,k); $Lp [i <O]  
k = j; WutPy_L<  
} 6nL^"3@S!  
} FoetP`   
private void fixUp(int k) { 01'>[h#_n  
while (k > 1) { MDlH[PJ@i  
int j = k >> 1; M.Yp'Av  
if (queue[j]>queue[k]) C 7C4 eW8  
break; ooVs8T2  
SortUtil.swap(queue,j,k); 9ngxkOGx  
k = j; w-n}&f  
} <MbhBIejr  
} ,ucRQ&P  
e#*3X4<\K  
} !5} }mf  
_f^6F<!  
} lEHx/#qt9  
*6?mZ*GYY  
SortUtil:  i"<W6  
(\F9_y,6*\  
package org.rut.util.algorithm; 1b%Oi.;  
(I~   
import org.rut.util.algorithm.support.BubbleSort; n[Q(q[ULV  
import org.rut.util.algorithm.support.HeapSort; r-y;"h'  
import org.rut.util.algorithm.support.ImprovedMergeSort; _Ay^v#a  
import org.rut.util.algorithm.support.ImprovedQuickSort; qSNCBn '  
import org.rut.util.algorithm.support.InsertSort; UQDAql  
import org.rut.util.algorithm.support.MergeSort; o-=|}u]mz  
import org.rut.util.algorithm.support.QuickSort; f8;?WSGyD2  
import org.rut.util.algorithm.support.SelectionSort; }<^mUG  
import org.rut.util.algorithm.support.ShellSort; _^& q,S  
N-K/jY  
/** r!&174DSR1  
* @author treeroot B@(d5i{h  
* @since 2006-2-2 #4Z e2T|  
* @version 1.0 1b~21n  
*/ #+ch  
public class SortUtil { #NFB=o JI  
public final static int INSERT = 1; 94w)Yln  
public final static int BUBBLE = 2; "OenYiz  
public final static int SELECTION = 3; F1.Xk1y%  
public final static int SHELL = 4; \ivxi<SR  
public final static int QUICK = 5; 'V?FeWp  
public final static int IMPROVED_QUICK = 6; 9qftMDLZJ\  
public final static int MERGE = 7; F%6wdM W  
public final static int IMPROVED_MERGE = 8; c]u ieig0~  
public final static int HEAP = 9; UDJjw  
'JOCL0FP  
public static void sort(int[] data) { BaQyn 6B  
sort(data, IMPROVED_QUICK); K%dQ; C*?  
} ],weqs  
private static String[] name={ a<&K^M&  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <G}Lc  
}; cTq@"v di  
4G,FJjE`p  
private static Sort[] impl=new Sort[]{ Pdf-2 Tx  
new InsertSort(), ~LuGfPO^  
new BubbleSort(), 6=/sEzS'  
new SelectionSort(), J3mLjYy  
new ShellSort(), J]U_A/f  
new QuickSort(), <mFDC?j  
new ImprovedQuickSort(), )J[m>tyY5  
new MergeSort(), Z9DfwWI2nu  
new ImprovedMergeSort(), ` Tap0V  
new HeapSort() vi}16V84l  
}; q5_zsUR=  
I#2$CSJ  
public static String toString(int algorithm){ =_`q;Tu=  
return name[algorithm-1]; i3 eF_  
} vcFR Td  
c K\   
public static void sort(int[] data, int algorithm) { L ?/AKg  
impl[algorithm-1].sort(data); OWibmX  
} x:Q\pZ  
sMMOZ'bT  
public static interface Sort { i6WPf:#wr  
public void sort(int[] data); {N}az"T4f  
} ?xqS#^Z  
W^8  
public static void swap(int[] data, int i, int j) { n$C- ^3 c  
int temp = data; 7K.75%}  
data = data[j]; (B4)L%  
data[j] = temp; 5@xR`g-  
} > '=QBW  
} { YQS fk  
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