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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。 )~ z Z'^  
插入排序: UFENy."P  
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package org.rut.util.algorithm.support; <o0~H  
)acV-+{  
import org.rut.util.algorithm.SortUtil; [X/(D9J  
/** Sj-[%D*  
* @author treeroot IU!Ht>  
* @since 2006-2-2 kus}W  J  
* @version 1.0 2dbRE:v5  
*/ {/}^D-  
public class InsertSort implements SortUtil.Sort{ 8h.V4/?  
3t(c_:[%  
/* (non-Javadoc) {'R)4hL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OM:v`<T!z  
*/ #w>~u2W  
public void sort(int[] data) { 6G_<2bO  
int temp; :a3 xvN-l  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S " pI  
} GGnp Pp  
} w%xCTeK[  
} P5?<_x0v4b  
`ZGcgO<c\  
} 'fY9a(Xt.  
lS9n@  
冒泡排序: Gvx[ 8I  
z"379b7cN  
package org.rut.util.algorithm.support; ;dQAV\  
8_Z/o5s  
import org.rut.util.algorithm.SortUtil; i@zY9,b  
Rs7 |}Dl}  
/** l [%lE  
* @author treeroot DWf$X1M  
* @since 2006-2-2 ai^|N.!  
* @version 1.0 \:&@;!a  
*/ \ =nrt?  
public class BubbleSort implements SortUtil.Sort{ d`%M g&  
K2ewucn  
/* (non-Javadoc) 6 bO;&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =2 jhII  
*/ &]iKr iG  
public void sort(int[] data) { $YM_G=k  
int temp; yV]xRaRr2  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +m/,,+4  
if(data[j] SortUtil.swap(data,j,j-1); rC }}r!!  
} `9 [i79U  
} h?j_Ry  
} PRr*]$\&Mj  
} -s"0/)HD  
!7 _\P7M  
} }5n  
IZNOWX|Z;  
选择排序: >D _F!_  
&drFQ|  
package org.rut.util.algorithm.support; WS,7dz  
A 's-'8m  
import org.rut.util.algorithm.SortUtil; nSS=%,?  
V4K'R2t  
/** f)6))  
* @author treeroot J8Z0D:5  
* @since 2006-2-2 D>kD1B1  
* @version 1.0 (tCib 4  
*/ hbfq]v*X  
public class SelectionSort implements SortUtil.Sort { Zb(t3I>n  
xRxy|x[  
/* Lj 8<' "U#  
* (non-Javadoc) ISNcswN#  
* ^v :Zo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aj8Rb&  
*/ wNDbHR  
public void sort(int[] data) { Ly #_?\bn  
int temp; AsxD}Nw[Z*  
for (int i = 0; i < data.length; i++) { o8S"&O ?  
int lowIndex = i; ct n, ]ld  
for (int j = data.length - 1; j > i; j--) { BIMKsF Zt  
if (data[j] < data[lowIndex]) { r88"#C6E'  
lowIndex = j; .C!vr@@]  
} f j<H6|3  
} VmvQvQ/9R  
SortUtil.swap(data,i,lowIndex); 3V;gW%>  
} t;O1IMF  
} I/uy>*  
4Z5#F]OA7  
} HEY4$Lf(I  
|>1hu1  
Shell排序: ;YH[G;aJ  
?F@%S3h.  
package org.rut.util.algorithm.support; O)#U ^  
k`VM2+9h'^  
import org.rut.util.algorithm.SortUtil; mTf<  
9M-K]0S(  
/** %oof}=MxCL  
* @author treeroot mP^SS Je  
* @since 2006-2-2 Pe ~c  
* @version 1.0 1ThqqB  
*/ ?I W_O~Js  
public class ShellSort implements SortUtil.Sort{ pJ^NA2  
}iww:H-1  
/* (non-Javadoc) Mi 0sC24b|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K-Mc6  
*/ aMwB>bt  
public void sort(int[] data) { 63&^BW  
for(int i=data.length/2;i>2;i/=2){ HlB]38  
for(int j=0;j insertSort(data,j,i); MXZ>"G  
} uA~slS Z  
} B3 zk(RNZ  
insertSort(data,0,1); :1aL ?  
} r`M6!}oa  
@WOM#Kc  
/** vq'k|_Qi=  
* @param data =/9^, 6Q(  
* @param j q]c5MlJXF  
* @param i k$"d^*R  
*/ SW 8x]B  
private void insertSort(int[] data, int start, int inc) { P3o @gkXP  
int temp; {"}V&X160o  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Sycw %k  
} m $dV<  
} !m y8AWO'  
} r o\1]`6  
elO<a]hX  
} W>-B [5O&[  
4na8  
快速排序: x]4Kkpqm  
Gi?_ujZR  
package org.rut.util.algorithm.support; !@L=;1,  
p,!$/Q+l  
import org.rut.util.algorithm.SortUtil; {{{#?~3$7  
R[Fn0fnLx  
/** 9lzQ\}  
* @author treeroot q{' ~+Nq  
* @since 2006-2-2 i*[n{=*l@  
* @version 1.0 IOl+t,0x&  
*/ l*}FXL  
public class QuickSort implements SortUtil.Sort{ dt,3"J  
M]rO;^;6?  
/* (non-Javadoc) \~DM   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gPXa>C  
*/ 2U$"=:Cf  
public void sort(int[] data) { k&6I f0i  
quickSort(data,0,data.length-1); 2}WDw>V  
} {ERMGd6Jp  
private void quickSort(int[] data,int i,int j){ ZFn(x*L  
int pivotIndex=(i+j)/2; 0Y+FRB ]u  
file://swap ${r[!0|   
SortUtil.swap(data,pivotIndex,j); /n{1o\  
`=)2<Ca;~@  
int k=partition(data,i-1,j,data[j]); r@}bDkx  
SortUtil.swap(data,k,j); 9Sg<K)Mc  
if((k-i)>1) quickSort(data,i,k-1); >hsuAU.UOR  
if((j-k)>1) quickSort(data,k+1,j); [~mGsXV  
=JO^XwUOo  
} Paf%rv2  
/** +]wuJSxc  
* @param data q9*MNHg }  
* @param i <M+R\SH-  
* @param j CboLH0Fa  
* @return !!,0'c  
*/ OSDy'@   
private int partition(int[] data, int l, int r,int pivot) { \=e8%.#@J  
do{ :1wrVU-?h  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;y>a nE}n{  
SortUtil.swap(data,l,r); x4kWLy7Sz  
} /@oLe[Mz$  
while(l SortUtil.swap(data,l,r); n=sXSxl  
return l; 1TN}GsAj  
} b{Zpux+  
b$JBL_U5Ch  
} #5ax^p2*~  
On_@HQ/FI  
改进后的快速排序: B(5c9DI`  
]N)DS+V/  
package org.rut.util.algorithm.support; ERMa# L  
kuMKX`_  
import org.rut.util.algorithm.SortUtil; 1 Y/$,Oa5  
\Sy7 "a  
/** 0D&>Gyc*0  
* @author treeroot )}lRd#V  
* @since 2006-2-2 zc+@lJy  
* @version 1.0 J%rP$O$  
*/ yW7'?  
public class ImprovedQuickSort implements SortUtil.Sort { l|`^*%W@u6  
Snw3`|Y~<  
private static int MAX_STACK_SIZE=4096; 2.I^Xf2  
private static int THRESHOLD=10; &9[P-w;7u  
/* (non-Javadoc) nD6G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PX O!t]*  
*/ >t+ qe/  
public void sort(int[] data) { S;\R!%t_  
int[] stack=new int[MAX_STACK_SIZE]; @tT-JwU  
<^R{U&Z@  
int top=-1; D{7w!z  
int pivot; DC4C$AyW r  
int pivotIndex,l,r; ^4Uw8-/9  
&l2TeC@;  
stack[++top]=0; .TB"eUy  
stack[++top]=data.length-1; -apXI.  
tD=@SX'Y  
while(top>0){ DocbxB={I  
int j=stack[top--]; L EWhb!U  
int i=stack[top--]; `#s#it'y  
/Ft:ffR|R  
pivotIndex=(i+j)/2; |i %2%V#  
pivot=data[pivotIndex]; ^_5|BT@  
&Z("D7.G  
SortUtil.swap(data,pivotIndex,j); EMvHFu   
,XKCz ]8V  
file://partition HTjkR*E  
l=i-1; B|Wk?w.{r\  
r=j; y0bq;(~X~  
do{ $K}DB N; 4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S6i@"h5  
SortUtil.swap(data,l,r); }^ FulsC  
} 'xK.U I  
while(l SortUtil.swap(data,l,r); UmU:j@ xvg  
SortUtil.swap(data,l,j); @E9" Zv-$  
PO-"M)M  
if((l-i)>THRESHOLD){ Tbbz'b;{  
stack[++top]=i; B|=|.qp$)  
stack[++top]=l-1; U]6&b  
} &m^@9E)S/  
if((j-l)>THRESHOLD){ P.\nLE J=  
stack[++top]=l+1; e79KbLV  
stack[++top]=j; X JGB)3QI  
} ^z;JVrW  
r`'y?Bra;  
} R=)55qu  
file://new InsertSort().sort(data); D)$8 W[  
insertSort(data); Kyg=$^{>G  
} VDF)zA1V  
/** \FmKJ\  
* @param data PH3 >9/H  
*/ b0<o  
private void insertSort(int[] data) { U^lW@u?:  
int temp; #$ thPZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +=$  
} 9i$NhfOe  
} "eAy^,  
} L1m{]>{-  
D/(CU#i"  
} *#U+qgA;`  
b{M7w  
归并排序: n`7f"'/:  
N#xG3zZl|N  
package org.rut.util.algorithm.support; ^_+XDO  
0Rn+`UnwB  
import org.rut.util.algorithm.SortUtil; NaUr!s  
L{{CAB!  
/** i&Fiq&V)[  
* @author treeroot 9]'&RyH=#  
* @since 2006-2-2 {jKI^aC<[  
* @version 1.0 V\5 L?}  
*/ N!&:rK  
public class MergeSort implements SortUtil.Sort{ b-5y9K  
TX8<J>x  
/* (non-Javadoc) AvJ,SQt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^]C&tG0 !  
*/ ->{d`-}m'  
public void sort(int[] data) { V7Yaks  
int[] temp=new int[data.length]; U/{6% Qy  
mergeSort(data,temp,0,data.length-1); Ddju~510  
} RI n9(r  
`YBkF  
private void mergeSort(int[] data,int[] temp,int l,int r){ d(`AXyw  
int mid=(l+r)/2; WCJxu}!  
if(l==r) return ; &^&zR(o`  
mergeSort(data,temp,l,mid); &[mZD,  
mergeSort(data,temp,mid+1,r); >JwLk[=j  
for(int i=l;i<=r;i++){ |Hr:S":9  
temp=data; B@YyQ'  
} R<ND=[}s  
int i1=l; WG71k8af  
int i2=mid+1; Ter :sge7  
for(int cur=l;cur<=r;cur++){ "6ECgyD+E!  
if(i1==mid+1) qml2XJ>  
data[cur]=temp[i2++]; T'-FV  
else if(i2>r) 1nknSw#  
data[cur]=temp[i1++]; :G w~7v_  
else if(temp[i1] data[cur]=temp[i1++]; d5 Edu44  
else 5+Mdh`  
data[cur]=temp[i2++]; E\ 8  
} BKa- k!  
} LA3<=R]  
smY$-v)@  
} qm*}U3K  
$4FX(O0Q@  
改进后的归并排序: s?Uh|BfB  
S{Hx]\  
package org.rut.util.algorithm.support; M]v=-  
s pLZ2]A  
import org.rut.util.algorithm.SortUtil; HS>f1!  
f;SC{2f  
/** X6+qpp  
* @author treeroot M@1r:4CoKH  
* @since 2006-2-2 k^ F@X  
* @version 1.0 sd#|3  
*/ [L $9p@I  
public class ImprovedMergeSort implements SortUtil.Sort { "& Dx=Yf  
KfCoe[Vv  
private static final int THRESHOLD = 10; $2D uB  
FSuAjBl0-  
/* )QagS.L{z  
* (non-Javadoc) m4E)qCvy  
* gnp~OVDqfL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8;Fn7k_Uf  
*/ %Pqk63QF  
public void sort(int[] data) { l%z<(L5  
int[] temp=new int[data.length]; juF{}J2  
mergeSort(data,temp,0,data.length-1); 4F>Urh+  
} Z|9u]xL  
am_gH  
private void mergeSort(int[] data, int[] temp, int l, int r) { y %$O-q  
int i, j, k; X2mREt9  
int mid = (l + r) / 2; }0`nvAf  
if (l == r) wfvU0]wk}  
return; [a o U5;7  
if ((mid - l) >= THRESHOLD)  O|A_PyW  
mergeSort(data, temp, l, mid); ;R=.iOn  
else +(D$9{y   
insertSort(data, l, mid - l + 1); "1q>At  
if ((r - mid) > THRESHOLD) $P7iRM]  
mergeSort(data, temp, mid + 1, r); j6~nE'sQ  
else X7UuwIIP  
insertSort(data, mid + 1, r - mid); ;g_> ;tR/  
G!8Z~CPF  
for (i = l; i <= mid; i++) { v1k)hFjPK  
temp = data; 5m=I*.qE  
} MC((M,3L  
for (j = 1; j <= r - mid; j++) { K'iIJA*Sn  
temp[r - j + 1] = data[j + mid]; #eU.p&Zc  
} uV-'~8  
int a = temp[l]; jJ4qR:]  
int b = temp[r]; g>d;|sK  
for (i = l, j = r, k = l; k <= r; k++) { I]Tsz'T!9  
if (a < b) { ?.c;oS|  
data[k] = temp[i++]; ^[Ua46/"m  
a = temp; ) yY6rI;:  
} else { b5IA"w  
data[k] = temp[j--]; =&0wr6  
b = temp[j]; Bx"7%[  
} t#nn@Yf  
} LN l#h  
} i`/+,<  
b5m=7;u*h  
/** MC 0TaP  
* @param data #zrTY9m7  
* @param l e}@)z3Q<l  
* @param i @cRZk`|1n  
*/ wi8Yl1p]!z  
private void insertSort(int[] data, int start, int len) { }~h'FHCC+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); IvpcSam'  
} ;Zj]~|  
} +9O5KI?P  
} { 74mf'IW  
} 3ZTE<zRQ  
 %d Ernc$  
堆排序: Iu~\L0R427  
-IlJ^Al4  
package org.rut.util.algorithm.support; Gc.P,K/hr  
2#X4G~>#h  
import org.rut.util.algorithm.SortUtil; (3[z%@I  
>vrxP8_  
/** /2{5;  
* @author treeroot % |q0-x  
* @since 2006-2-2 %8aC1x  
* @version 1.0 s{ V*1$e~  
*/ VN4yn| f/  
public class HeapSort implements SortUtil.Sort{ C=uZ1xg*,  
&Gm$:T'~  
/* (non-Javadoc) ( nW67YTr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D2YZ9e   
*/ B:"THN^  
public void sort(int[] data) { jUj<~:Q}3o  
MaxHeap h=new MaxHeap(); ~,D@8tv  
h.init(data); uUE9g  
for(int i=0;i h.remove(); wn Y$fT9  
System.arraycopy(h.queue,1,data,0,data.length); 6#}93Dgv4  
} RjJU4q  
yix'rA-T  
private static class MaxHeap{ JO&JP3N1  
a/~aFmu6b  
void init(int[] data){ nqR?l4 DX  
this.queue=new int[data.length+1]; >}~#>Ru  
for(int i=0;i queue[++size]=data; ]DFXPV  
fixUp(size); %I!:ITa  
} z s Qo$p  
} h :Xz UxL\  
sDqe(x}a  
private int size=0; _FbC{yI8;  
E{=2\Wkcp  
private int[] queue; _ 7oV<  
fsO9EEn7 X  
public int get() { *fO3]+)d+  
return queue[1]; 3>zN/ f  
} |( (zTf  
,~ ?'Ef80  
public void remove() { u{&B^s)k.  
SortUtil.swap(queue,1,size--); AJt!!crs  
fixDown(1); LL!.c  
} M_B:{%4  
file://fixdown HQ!Xj .y  
private void fixDown(int k) { ->-*]-fv[L  
int j; M|T4~Q U&  
while ((j = k << 1) <= size) { LiDvaF:@L!  
if (j < size %26amp;%26amp; queue[j] j++; ArLvz5WV  
if (queue[k]>queue[j]) file://不用交换 K*K1(_x=  
break; >,C4rC+:XN  
SortUtil.swap(queue,j,k); hovGQHg  
k = j; *, Ld/O;s  
} .=9 s1 ~]  
} 2.}R  
private void fixUp(int k) { y;" n9  
while (k > 1) { O|kKwadC  
int j = k >> 1; 3HG;!D~m;  
if (queue[j]>queue[k]) fLN!EDq  
break; >: 0tA{bV  
SortUtil.swap(queue,j,k); 4kp im  
k = j; ,zcQS-e2  
} KYJ1}5n  
} nR \'[~+  
Tm+;0  
} ;SwC&.I  
E ?2O(  
} rt]S\  
oqkVYlE  
SortUtil: ,reJ(s  
~ <0Z>qr  
package org.rut.util.algorithm; :L?_Y/K  
FD7H@L5  
import org.rut.util.algorithm.support.BubbleSort; }pNX@C#De  
import org.rut.util.algorithm.support.HeapSort; HgBJf~q~U  
import org.rut.util.algorithm.support.ImprovedMergeSort; n[xkSF^)  
import org.rut.util.algorithm.support.ImprovedQuickSort; $BN15x0/:~  
import org.rut.util.algorithm.support.InsertSort; +\`vq"e  
import org.rut.util.algorithm.support.MergeSort; W@L3+4  
import org.rut.util.algorithm.support.QuickSort; [um&X=1V8  
import org.rut.util.algorithm.support.SelectionSort; }m]q}r  
import org.rut.util.algorithm.support.ShellSort; T*2C_oW  
R5Yl1   
/** /z."l!u6  
* @author treeroot 7D"%%|: h  
* @since 2006-2-2 ul7o%Hs  
* @version 1.0 3EFD%9n  
*/ 0V,Nv9!S  
public class SortUtil { khd5 Cf[   
public final static int INSERT = 1; 6y+b5-{'  
public final static int BUBBLE = 2;  GrJ#.  
public final static int SELECTION = 3; UgHf*m  
public final static int SHELL = 4; Gu(lI ~  
public final static int QUICK = 5; O0l^*nZ46t  
public final static int IMPROVED_QUICK = 6; e&Y0}oY  
public final static int MERGE = 7; 'E;W  
public final static int IMPROVED_MERGE = 8; s}x>J8hK  
public final static int HEAP = 9; l4'~}nn(Y  
>}+Q:iNQ)2  
public static void sort(int[] data) { a^nAZ  
sort(data, IMPROVED_QUICK); uq7T{7~<  
} (ClhbfzD  
private static String[] name={ V*n==Nb5L  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5vp|?-\h>  
}; A;K(J4y*  
g9tu %cIkR  
private static Sort[] impl=new Sort[]{ Eyh|a. )-  
new InsertSort(), 8m=Z|"H@  
new BubbleSort(), u4'z$>B  
new SelectionSort(), O??vm?eo  
new ShellSort(), 3*S[eqMJc  
new QuickSort(), @Z(rgF{{  
new ImprovedQuickSort(), =iz,S:[  
new MergeSort(), .:1qK<vz  
new ImprovedMergeSort(), uZjI?Z.A  
new HeapSort() a_T,t'6  
}; vS; '}N  
VC&c)X  
public static String toString(int algorithm){ Rc$h{0K8  
return name[algorithm-1]; {XY3Xo  
} )na&" bJ  
gy_$#e  
public static void sort(int[] data, int algorithm) { _+QwREP  
impl[algorithm-1].sort(data); 97~K!'/^+y  
} Rq)BssdF  
*_hLD5K!  
public static interface Sort { J%v5d*$.  
public void sort(int[] data); GG-[`!>.pw  
} O&?.&h  
W|c.l{A5Q  
public static void swap(int[] data, int i, int j) { M-9gD[m  
int temp = data; 6v z1*\:H~  
data = data[j]; Q |hm1q  
data[j] = temp; -e>|kPfv!  
} Agy <j   
} )^;DGzG  
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