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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。 g#0h{%3A \  
插入排序: dj,7lJy  
e R"XXF0u  
package org.rut.util.algorithm.support; 4/; X-  
yNVuSj  
import org.rut.util.algorithm.SortUtil; Q*|O9vu'D  
/** Cw1Jl5OVZ  
* @author treeroot (.Tkv Uj`  
* @since 2006-2-2 d5$2*h{^v  
* @version 1.0 +!9&E{pmo  
*/ ??tyz4$;  
public class InsertSort implements SortUtil.Sort{ nHxos` Qx  
kgfOH.P  
/* (non-Javadoc) [v$_BS#u^3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v%c r   
*/ yyZ}qnbx]  
public void sort(int[] data) { xo#&&/6  
int temp; m[S6pqz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WbZ{) i  
} ;!U`GN,tH  
} kGhWr M  
} Zj;2>  
-AwR$<q'  
} 1;E[Ml  
g`~c|bx  
冒泡排序: P~n I6/r1  
b Z c&uq_  
package org.rut.util.algorithm.support; IxC/X5Mp^q  
3\FPW1$i|[  
import org.rut.util.algorithm.SortUtil; D )z'FOaI  
[OFg (R-  
/** DE3>F^ j  
* @author treeroot 5 OR L  
* @since 2006-2-2 IE*GF27n  
* @version 1.0 Ep-{Ew{T_=  
*/ 5Gm,lNQAv  
public class BubbleSort implements SortUtil.Sort{ Z M"J5}h  
yP2[!vYw  
/* (non-Javadoc) S^|Uzc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (pXZ$R:  
*/ M##h<3I  
public void sort(int[] data) { h _6QVab@  
int temp; -Si'[5@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ AkdONKO8{  
if(data[j] SortUtil.swap(data,j,j-1); (9q61z A  
} s>`$]6wPa  
} F[/Bp>P7  
} 4~-"k{Xt  
} P1DYjm[+D  
#UGtYD}"  
} Q: ?]:i/*  
\wRbhN  
选择排序: B6r~4=w_  
vU Bk oC2Q  
package org.rut.util.algorithm.support; 0] e=  
1c);![O  
import org.rut.util.algorithm.SortUtil; g+8{{o=  
@2Xw17[f35  
/** p~1,[]k  
* @author treeroot -+4:} sD  
* @since 2006-2-2 !J ")TP=  
* @version 1.0 s hjb b  
*/ c/.U<  
public class SelectionSort implements SortUtil.Sort { b,kXV<KtU  
un|+YqLf  
/* |0YDCMq(  
* (non-Javadoc) )M(;:#le  
* K FV&Dt}<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xsS/)R?  
*/ SPKGbp&  
public void sort(int[] data) { cl4`FU  
int temp; Dg~r%F  
for (int i = 0; i < data.length; i++) { l1}=>V1  
int lowIndex = i; [L h<k+  
for (int j = data.length - 1; j > i; j--) { LY}%|w  
if (data[j] < data[lowIndex]) { &L}e&5  
lowIndex = j; f?: o  
} 88 ~BE ^  
} B4AV ubMbe  
SortUtil.swap(data,i,lowIndex); *FyBkG'  
} HRO :U%  
} r@L19d)J  
u'cM}y&  
} hMz= \)Pl  
PY=(|2tb4  
Shell排序: 2Jo'!|]  
uP bvN[~t  
package org.rut.util.algorithm.support; xVHZZ?e  
:lz@G 4 =C  
import org.rut.util.algorithm.SortUtil; x5\C MWW  
oiYI$ql3L  
/** Dp|y&x!  
* @author treeroot V&82U w  
* @since 2006-2-2 v^2q\A-?  
* @version 1.0 zs!,PQF(  
*/ 9%aBW7@SK  
public class ShellSort implements SortUtil.Sort{ lN$#lyy  
o= VzVg  
/* (non-Javadoc) b:Oa4vBa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !mhV$2&r  
*/ ; V)pXLE  
public void sort(int[] data) {  m~"<k d  
for(int i=data.length/2;i>2;i/=2){ ?)<DEu:Y  
for(int j=0;j insertSort(data,j,i); .}gGtH,b3  
} @ht= (Jk9  
} &r s+x<  
insertSort(data,0,1); 1,,kU  
} M.|O+K z  
^eke,,~  
/** 4'JuK{/ A7  
* @param data 3u+A/  
* @param j M:V'vme)+  
* @param i @{16j# 'R  
*/ 5P~{*of  
private void insertSort(int[] data, int start, int inc) { 2(V;OWY(@  
int temp; X5i?B b.  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "HI&dC  
} 3>FeTf#:  
} .Fo0AjL}x  
} \x D.rBbt  
 ! K:  
} uCGJe1!Ai>  
?v8.3EE1\o  
快速排序: .OI&Zm-  
-0[?6.(s"  
package org.rut.util.algorithm.support; ]6)^+(zU  
LbX>@2(&  
import org.rut.util.algorithm.SortUtil; 4%#Y)z o.e  
NzB"u+jB  
/** J`/t;xk  
* @author treeroot HD^Ou5YB  
* @since 2006-2-2 :t?Z  
* @version 1.0 ._2#89V  
*/ )EQWc0iKG  
public class QuickSort implements SortUtil.Sort{ 1#rcxUSi  
4cC  
/* (non-Javadoc) )`;Q]?D   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3ZRi@=kWz  
*/ +u+|9@  
public void sort(int[] data) { z|,YO6(L  
quickSort(data,0,data.length-1); 8Mx+tA  
} GZY8%.1{"a  
private void quickSort(int[] data,int i,int j){ N]gJ( g  
int pivotIndex=(i+j)/2; B!:%^S  
file://swap _XLGXJ[B  
SortUtil.swap(data,pivotIndex,j); :iW+CD)j  
\@IEqm6  
int k=partition(data,i-1,j,data[j]); O  |45r   
SortUtil.swap(data,k,j); AAbI+L0m{  
if((k-i)>1) quickSort(data,i,k-1); FvX<(8'#a  
if((j-k)>1) quickSort(data,k+1,j); SM%N ]/@U  
GQ=Zp3[  
} 2d1Z;@x  
/** (C{l4  
* @param data -!d'!; ]  
* @param i -J7BEx  
* @param j FDfLPCQm  
* @return o< )"\f/,  
*/ }J=>nL'B  
private int partition(int[] data, int l, int r,int pivot) { c8uFLM j  
do{ Da.eVU;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); KZ8Hp=s  
SortUtil.swap(data,l,r); z?T;2/_7  
} +fh@m h0[  
while(l SortUtil.swap(data,l,r); 7X+SK&PX  
return l; H&$L1CrdL  
} <%d/"XNg[D  
j1[Ng #.  
} 'OrGt_U  
1Q[I$=-F  
改进后的快速排序: N{/):O  
}STTDq4  
package org.rut.util.algorithm.support; Ag[Zs%X  
BQ8vg8e]B  
import org.rut.util.algorithm.SortUtil; dJvT2s.t[  
v)+E!"R3.  
/** 0v7#vZ  
* @author treeroot h2k"iO }  
* @since 2006-2-2  kwI[BF  
* @version 1.0 .|XG0M  
*/ RCZ"BxleU  
public class ImprovedQuickSort implements SortUtil.Sort { Oy(f h%k#  
]iI2  
private static int MAX_STACK_SIZE=4096; ~PaEhj&8  
private static int THRESHOLD=10; OKW}8qM  
/* (non-Javadoc) g|STegg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !TNp|U!  
*/ aMU0BS"   
public void sort(int[] data) { d_7v1)j  
int[] stack=new int[MAX_STACK_SIZE]; pCacm@(hG  
H$D),s gv  
int top=-1; Ms4~P6;%  
int pivot; _?VMSu  
int pivotIndex,l,r; <8J_[ S  
'{>R-}o[3  
stack[++top]=0; 7~zd % o  
stack[++top]=data.length-1; /)+V(Jlu  
qdW"g$fW  
while(top>0){ r`dQ<U,  
int j=stack[top--]; RpmOg  
int i=stack[top--]; nYFM^56>_  
$O'IbA  
pivotIndex=(i+j)/2; 1eP`  
pivot=data[pivotIndex]; G'#f*) f  
#gq!L  
SortUtil.swap(data,pivotIndex,j); Ji#eA[  
!B*l'OJw  
file://partition mz>GbImVD~  
l=i-1;  i)!2DXn  
r=j; qr@ <'wp/  
do{ \rpXG9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;_~9".'<d  
SortUtil.swap(data,l,r); luWr.<1  
} ,=IGqw  
while(l SortUtil.swap(data,l,r); Tr@|QNu  
SortUtil.swap(data,l,j); uh<e- ;vU  
z7X,5[P  
if((l-i)>THRESHOLD){ ]&;K:#J  
stack[++top]=i; zG* >g  
stack[++top]=l-1; m[}@\y  
} ''Y'ZsQ;  
if((j-l)>THRESHOLD){ ` n#Db  
stack[++top]=l+1; f1$'av  
stack[++top]=j; Ga]\~31NE  
} H`bS::JI-  
0$g;O5y"i  
} :<P3fW  
file://new InsertSort().sort(data); Nsf>b8O  
insertSort(data); C0gY  
} Ur9L8EdC  
/** B&+)s5hh  
* @param data YD{Ppz  
*/ /lS5B6NU  
private void insertSort(int[] data) { V(5*Dn84  
int temp; .du2;` [$r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s-801JpiJ  
} ^wIg|Gc  
} Zmc"  
} /(u# D[  
^)p+)5l   
} yz<$?Gblz  
q o6~)Aws  
归并排序: a=4 `C*)  
iLt2L;v>h  
package org.rut.util.algorithm.support; at+Nd K  
]iY O}JuX  
import org.rut.util.algorithm.SortUtil; Ya `$.D  
K>vi9,4/ks  
/** [G",Yky  
* @author treeroot 2!_DkE  
* @since 2006-2-2 ()Q#@?c~  
* @version 1.0 b_vKP  
*/ u[ E0jI  
public class MergeSort implements SortUtil.Sort{  X`20=x  
5AK@e|G$w  
/* (non-Javadoc) U4N H9-U'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8#nAs\^  
*/ &n'@L9v81  
public void sort(int[] data) { [XhG7Ly  
int[] temp=new int[data.length]; 6DG%pF,  
mergeSort(data,temp,0,data.length-1); \iRmGvT  
} vW-o%u*  
IP  
private void mergeSort(int[] data,int[] temp,int l,int r){ f hjlt#  
int mid=(l+r)/2; %i) 0sE T  
if(l==r) return ; nR=!S5>S  
mergeSort(data,temp,l,mid); ,R\ex =c  
mergeSort(data,temp,mid+1,r); ^ 4Uk'T7V  
for(int i=l;i<=r;i++){ ;efF]")  
temp=data; QM24cm T  
} 5\Rg%Ezl  
int i1=l; pr[V*C/  
int i2=mid+1; DYF(O-hJK  
for(int cur=l;cur<=r;cur++){ t*J?#r  
if(i1==mid+1) j>?`N^  
data[cur]=temp[i2++]; <@$+uZt+  
else if(i2>r) u2S8D uJ  
data[cur]=temp[i1++]; p}Um+I=1  
else if(temp[i1] data[cur]=temp[i1++]; lA` qB1x  
else e'sS",o*  
data[cur]=temp[i2++]; i#aKW'  
} 8!{ }WLwb  
} ~d3|zlh  
IF  cre  
} )KY4BBc  
<TTBIXV  
改进后的归并排序: EbeSl+iMx_  
5,pEJ>dDD3  
package org.rut.util.algorithm.support;  nvCp-Z$  
yIC C8M  
import org.rut.util.algorithm.SortUtil; J|F!$m{  
?O Puv5!pI  
/** H.;2o(vD  
* @author treeroot kCALJRf~d  
* @since 2006-2-2 Y>T<Qn^D  
* @version 1.0 CkRilS<  
*/ icQQLSU5  
public class ImprovedMergeSort implements SortUtil.Sort { Nt;1&dwUb  
aCJ-T8?'  
private static final int THRESHOLD = 10; dlA0&;}z  
C[';B)a  
/* _kc}:  
* (non-Javadoc) JAM]neKiX  
* ,rjl|F* T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a)*(**e$*i  
*/ k(M"k!M  
public void sort(int[] data) { j]U~ZAn,K  
int[] temp=new int[data.length]; W7c B  
mergeSort(data,temp,0,data.length-1); #Cx#U"~G`  
} oJ tmd}  
f1S% p  
private void mergeSort(int[] data, int[] temp, int l, int r) { .mNw^>:cq  
int i, j, k; Z&4L///  
int mid = (l + r) / 2; ^oYRB EIJH  
if (l == r) A<^X P-Nrp  
return; @r^s70{}  
if ((mid - l) >= THRESHOLD) P @J)S ?  
mergeSort(data, temp, l, mid); Fn0 |v66  
else Ct^=j@g  
insertSort(data, l, mid - l + 1);  7|yEf  
if ((r - mid) > THRESHOLD) 7[mP@ {  
mergeSort(data, temp, mid + 1, r); U%0|LQk5  
else F vTswM>  
insertSort(data, mid + 1, r - mid); yVQW|D0,j  
>5E1y!  
for (i = l; i <= mid; i++) { H )>3c1  
temp = data; .2U3_1dX  
} vL;>A]oM2  
for (j = 1; j <= r - mid; j++) { $E!f@L  
temp[r - j + 1] = data[j + mid]; PJ=|g7I  
} *&I _fAh]  
int a = temp[l]; D+jE{v'  
int b = temp[r]; ei>iXDt  
for (i = l, j = r, k = l; k <= r; k++) { Nc HU)  
if (a < b) { YNl".c  
data[k] = temp[i++]; >JA>np  
a = temp; cq5^7.  
} else { '? -N  
data[k] = temp[j--]; Z4:^#98c.  
b = temp[j]; Y DW^N] G  
} >|`1aCg,  
} 8GRB6-.h  
} <CJy3<$u  
86 9sS  
/** M IyT9",Pl  
* @param data :xTm- L  
* @param l , Y,^vzX6  
* @param i GY %$7   
*/ c<lEFk!g  
private void insertSort(int[] data, int start, int len) { .XkD2~;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >y,. `ECn  
} W8Wjq DQ  
} Y@< j vH1  
} _>aP5g?Ep  
} SSbx[<E3  
V rd16s  
堆排序: uL@%M8n  
,L.V>Ae  
package org.rut.util.algorithm.support; ,t;US.s([.  
I<XYLe[_S  
import org.rut.util.algorithm.SortUtil; _yX.Apv]  
+S+=lu _  
/** |H]0pbC)w  
* @author treeroot S{v]B_N[M  
* @since 2006-2-2 %C@p4  
* @version 1.0 -"{g kjuv  
*/ ?Z4%u8Krvz  
public class HeapSort implements SortUtil.Sort{ k.jBu  
s? Xgo&rS_  
/* (non-Javadoc) hSXJDT2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9[W >`JKo  
*/ sekei6#fi  
public void sort(int[] data) { l!KPgRw  
MaxHeap h=new MaxHeap(); =F Y2O`%a  
h.init(data); ms!|a_H7 r  
for(int i=0;i h.remove(); D%LYQ  
System.arraycopy(h.queue,1,data,0,data.length); {]Cn@.TPD  
} hF5T9^8  
%3|/t-US  
private static class MaxHeap{ .p*?g;  
@$j u Qm  
void init(int[] data){ ?E(X>tH  
this.queue=new int[data.length+1]; `u R`O9)e  
for(int i=0;i queue[++size]=data; ,c0LRO   
fixUp(size); KZ%us6  
} g]c6_DMfb1  
} 6$f\#TR  
g oyQ',+  
private int size=0; kM1N4N7  
$+ N~Fa  
private int[] queue; ^c >Bh[  
I}5e{jBB  
public int get() { km][QEXs%  
return queue[1]; ggitUQ+t;G  
} "vQ%` Q  
rlawH}1b  
public void remove() { &l!T2PX!  
SortUtil.swap(queue,1,size--); c#`IF6qj  
fixDown(1); arRU`6?  
} R".$x{{  
file://fixdown ,!GoFu  
private void fixDown(int k) { ='=4tj=z  
int j; 3&5b!Y  
while ((j = k << 1) <= size) { ?G!~&  
if (j < size %26amp;%26amp; queue[j] j++; Iz'Et'w8!  
if (queue[k]>queue[j]) file://不用交换 2/tx5Nc  
break; 'Ha> >2M  
SortUtil.swap(queue,j,k); oyY z3X  
k = j; >SL mlK  
} Xdl dUK[  
} GUqG1u z9  
private void fixUp(int k) { zK1]o-wSAT  
while (k > 1) { ~e]B[>PT  
int j = k >> 1; 98O]tL+k/u  
if (queue[j]>queue[k]) f-|zh#L  
break; fA?v\'Qq/  
SortUtil.swap(queue,j,k); ,b IJW]h0  
k = j; Iz j-,a  
} HS ]c~  
} _x3=i\O,  
WiB~sIp  
} |HYST`  
V=th-o3[  
} mvc ;.+  
QT73=>^B  
SortUtil: TF5jTpGq  
OI"g-+~  
package org.rut.util.algorithm; d=8.cQL:E  
s3yGL  
import org.rut.util.algorithm.support.BubbleSort; &Xh>w(u  
import org.rut.util.algorithm.support.HeapSort; {X{S[(|  
import org.rut.util.algorithm.support.ImprovedMergeSort; %eW7AO>  
import org.rut.util.algorithm.support.ImprovedQuickSort; r\F2X J^  
import org.rut.util.algorithm.support.InsertSort; c2,g %(  
import org.rut.util.algorithm.support.MergeSort; XzX2V">(%  
import org.rut.util.algorithm.support.QuickSort; :@"o.8p   
import org.rut.util.algorithm.support.SelectionSort; _G@Z n[v  
import org.rut.util.algorithm.support.ShellSort; s3nt2$=:t  
<uJ {>~  
/** o@_i&4[MW  
* @author treeroot IDD`N{EA  
* @since 2006-2-2 S5, u| H  
* @version 1.0 D.%%D%AdB  
*/ 83 R_8  
public class SortUtil { 1#7|au%:)  
public final static int INSERT = 1; OHj>ufwVq  
public final static int BUBBLE = 2; $'_Q@ZBq  
public final static int SELECTION = 3; 9&Un|cr  
public final static int SHELL = 4; Mp!1xx  
public final static int QUICK = 5; /wJ4hHY  
public final static int IMPROVED_QUICK = 6; $gz8! f?  
public final static int MERGE = 7; y7CO%SA  
public final static int IMPROVED_MERGE = 8; |6DJ5VFzD  
public final static int HEAP = 9; (Cq 38~mR  
+/eJ#Xw3u8  
public static void sort(int[] data) { X[H.t$w5A  
sort(data, IMPROVED_QUICK); L;?F^RK{U  
} dTCLE t.  
private static String[] name={ }vx,i99W?  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8IWT;%  
}; );}M"W8  
-!qjBK,`X  
private static Sort[] impl=new Sort[]{ 9xq3>(  
new InsertSort(), F%&lM[N%  
new BubbleSort(), ub9[!}r't  
new SelectionSort(), GHn0(o&K  
new ShellSort(), 9+@z:j  
new QuickSort(), ^c(r4#}$"  
new ImprovedQuickSort(), &\~*%:C  
new MergeSort(), Z:>3AJuS_  
new ImprovedMergeSort(), Gf9sexn]l  
new HeapSort() z;e@m2.IM  
}; -AD` (b7q  
`$FX%p  
public static String toString(int algorithm){ zjcSn7iu  
return name[algorithm-1]; sb3z8:r  
} y( 22m+B  
,X:3w3nr^  
public static void sort(int[] data, int algorithm) { wme#8/eUk  
impl[algorithm-1].sort(data); LEtGrA/%@b  
} N}NKQ]=  
/ar0K9`c  
public static interface Sort { 66 R=  
public void sort(int[] data); {dxl8~/I  
} 7G;1n0m-T  
r r\u)D#)  
public static void swap(int[] data, int i, int j) { fJ5mKN  
int temp = data; \?Z7|   
data = data[j]; ):Z #!O<  
data[j] = temp; LJb=9tp~  
} KaOXqFT=  
} _unoDoB  
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