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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。 s88y{o  
插入排序: `6UtxJSx  
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package org.rut.util.algorithm.support; )]3L/  
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import org.rut.util.algorithm.SortUtil; uC)Zs, _5  
/** _Cj(fFL  
* @author treeroot %oR>Uo  
* @since 2006-2-2 M= atls  
* @version 1.0 URLk9PI  
*/ =88t*dH(,"  
public class InsertSort implements SortUtil.Sort{ 3Mur*tj#  
0juDuE?  
/* (non-Javadoc) f'i6QMk\&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v O PMgEI  
*/ QsM*wT&aa  
public void sort(int[] data) { IEc>.J|T&  
int temp; 4aA9\\hfGY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); moaodmt]x  
} 1EQvcw #  
} V +.Q0$~F5  
} \<=IMa0  
j6H R&vIM  
} xuF5/(__  
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冒泡排序: -nOq\RYV  
v"/TmiZ  
package org.rut.util.algorithm.support; ZOC#i i`:  
>GmN~"iJ  
import org.rut.util.algorithm.SortUtil; 4 ]sCr+   
~x\Cmu9`  
/** Z~_8P  
* @author treeroot svqvG7  
* @since 2006-2-2 -IbbPuRq  
* @version 1.0  9|<Be6  
*/ y)tYSTJK  
public class BubbleSort implements SortUtil.Sort{ e+l\\9v  
V'C-'Ythwf  
/* (non-Javadoc) vcwK6G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HZ{n&iJ  
*/ fQP,=  
public void sort(int[] data) { 0`6),R'x  
int temp; jAZ >mo[  
for(int i=0;i for(int j=data.length-1;j>i;j--){ `2,a(Sk#  
if(data[j] SortUtil.swap(data,j,j-1); oE6|Zw  
} 4 A5t*e  
} Oi6Eo~\f  
} 5tMh/]IeS  
} 5y040 N-  
b9DR%hO:  
} /,LfA2^_j{  
o(zTNk5d  
选择排序:  `Klrr  
ODek%0=  
package org.rut.util.algorithm.support; x^X$M$o,l  
mbGcDG[HQ  
import org.rut.util.algorithm.SortUtil; g#|oi f9o  
obj!I7  
/** (![t_r0  
* @author treeroot Ox|TMSb^  
* @since 2006-2-2 _0.pvQ  
* @version 1.0 gJKKR]4*  
*/ K?[)E3  
public class SelectionSort implements SortUtil.Sort { %Lyz_2q A  
1|]xo3j"'  
/* dqxd3,Z  
* (non-Javadoc) ,z G(u 1  
* %<AS?Ry  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _[F@1NJ  
*/ O) 1E$#~  
public void sort(int[] data) { S+iP^*L,c  
int temp; Xo8DEr  
for (int i = 0; i < data.length; i++) { <}]{~y  
int lowIndex = i; bNXAU\M^  
for (int j = data.length - 1; j > i; j--) { iE=P'"I  
if (data[j] < data[lowIndex]) { #52NsVaT@  
lowIndex = j; |by@ :@*y  
} u1N1n;#  
} ^aHh{BQ%  
SortUtil.swap(data,i,lowIndex); GQ[pG{ _+  
} =LK}9ViH  
} ik IzhUWE  
kZv*rWAm  
} =U c$D*  
<wa(xDBw  
Shell排序: EX+,:l\^  
n]v7V&mj\  
package org.rut.util.algorithm.support; H]]c9`ayt  
~z`/9 ;  
import org.rut.util.algorithm.SortUtil; 5 < GDW=  
*i@T!O(1)M  
/** jq[x DwPG  
* @author treeroot ;NP[_2|-,  
* @since 2006-2-2 B4^`Sw  
* @version 1.0 >(3'Tnu  
*/ ~~q}cywBk  
public class ShellSort implements SortUtil.Sort{ ABZ06S/  
hiN/S|JN8y  
/* (non-Javadoc) 5 q65nF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O_AGMW/2+  
*/ <sc\EK  
public void sort(int[] data) { h R~v  
for(int i=data.length/2;i>2;i/=2){ @hsbq  
for(int j=0;j insertSort(data,j,i); x2m]Us@LIU  
} LipxAE?O  
} &[~[~m|  
insertSort(data,0,1); `.8UKSH+  
} >XnO&hW  
Um\0i;7 ~4  
/** ;ctU&`  
* @param data ;cLUnsB\  
* @param j 3~<}bee5|q  
* @param i i. M2E$b|  
*/ GI_DhU]~)  
private void insertSort(int[] data, int start, int inc) { Pin/qp&Fa8  
int temp; "{ FoA3g|  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0;<OYbm3<  
} cgN>3cE  
} auL^%M|$R  
} a q kix"J  
K:_($X]  
} {R8=}Qo  
[e1L{_*l  
快速排序: ^yJ:+m;6K  
vI|As+`$d  
package org.rut.util.algorithm.support; Hk9U&j$  
T>F9Hs  W  
import org.rut.util.algorithm.SortUtil; /WYh[XKe  
dhtb?n{  
/** 1a8$f5  
* @author treeroot 5r7h=[N  
* @since 2006-2-2 f'_M0x  
* @version 1.0 L=g_@b   
*/ oCuV9dA.  
public class QuickSort implements SortUtil.Sort{ Hm4bN\%  
:1MM a6  
/* (non-Javadoc) %E.S[cf%8&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `)tA YH  
*/ HTR1)b  
public void sort(int[] data) { ~K` 1  
quickSort(data,0,data.length-1); bjzx!OCpV  
} Ow)R|/e /  
private void quickSort(int[] data,int i,int j){ R&Ci/  
int pivotIndex=(i+j)/2; .[(P  
file://swap TY6 rwU  
SortUtil.swap(data,pivotIndex,j); +N R n0 z(  
jyQVSQ s  
int k=partition(data,i-1,j,data[j]); K(OaW)j  
SortUtil.swap(data,k,j); $3#%aA!(#  
if((k-i)>1) quickSort(data,i,k-1); FUqt)YHi  
if((j-k)>1) quickSort(data,k+1,j); K'Spbn!nC  
Ue!Q."  
} #8UseK  
/** u]bz42]  
* @param data LS6ry,D"7  
* @param i 8t[t{"  
* @param j d.cCbr:  
* @return <+q$XL0  
*/ enumK\  
private int partition(int[] data, int l, int r,int pivot) { K(3&27sGN  
do{ P^zy;Qs7  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |X3">U +-  
SortUtil.swap(data,l,r); On%,l  
} lwJipIO  
while(l SortUtil.swap(data,l,r); 8K^f:)Qw  
return l; aDveU)]=1  
} +nQ!4  
<T4(H[9B  
} n1 v,#GE  
?0z)EPQ|  
改进后的快速排序: X" \}sl 5  
sOQcx\dK  
package org.rut.util.algorithm.support; &I)\*Ue2t  
I.a0[E/,  
import org.rut.util.algorithm.SortUtil; }p*?1N  
<4f,G]UH_  
/** Abf1"#YImy  
* @author treeroot >[Rz <yv  
* @since 2006-2-2 liD47}+  
* @version 1.0 gn.Ol/6D  
*/ tW(+xu36  
public class ImprovedQuickSort implements SortUtil.Sort { )eq}MaW+j  
`Cg^in\  
private static int MAX_STACK_SIZE=4096; !tBeuemN%  
private static int THRESHOLD=10; rS,j;8D-  
/* (non-Javadoc) ~p.%.b;~t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p8>R#9  
*/ (: OHyeNt  
public void sort(int[] data) { ohsH2]C  
int[] stack=new int[MAX_STACK_SIZE]; qiU5{}  
.YC;zn^  
int top=-1; VA2<r(y~(  
int pivot; ?Pnx ~m{%*  
int pivotIndex,l,r; QnU0"_-  
Q S;F+cmTh  
stack[++top]=0; :H\&2/j  
stack[++top]=data.length-1; :~33U)?{T  
$T/#1w P  
while(top>0){ = t-fYV  
int j=stack[top--]; [-58Ezyr  
int i=stack[top--]; $?$9y ^\  
)E~_rDTl  
pivotIndex=(i+j)/2; QkE,T0,/?h  
pivot=data[pivotIndex]; : I)Gv  
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SortUtil.swap(data,pivotIndex,j); {82rne `[  
UE;Bb*<   
file://partition R,b59,&3/  
l=i-1; v F[CWV.  
r=j; o8tS  
do{ 0[9I0YBJ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qguVaV4Y  
SortUtil.swap(data,l,r); -#%X3F7/w  
} W>:kq_gT  
while(l SortUtil.swap(data,l,r); *%?d\8d  
SortUtil.swap(data,l,j); Cya5*U0=  
3 Ta>Ki  
if((l-i)>THRESHOLD){ HEpM4xe$  
stack[++top]=i; 8Z!*[c>K-?  
stack[++top]=l-1; =)*JbwQ   
} .+vd6Uc5a  
if((j-l)>THRESHOLD){ XNlhu^jh  
stack[++top]=l+1; C fSl 54  
stack[++top]=j; n}:t<  
} 9gR.RwR X  
!o<ICHHH  
} u}m.}Mws  
file://new InsertSort().sort(data); :MBS>owR  
insertSort(data); `Hd9\;NJ  
} 2Y;!$0_rv  
/** Aqu]9M~  
* @param data R+F,H`  
*/ H!. ZH(asY  
private void insertSort(int[] data) { 3KT_AJ4}  
int temp; H+R7X71{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yZ~b+=UM  
} x ^[F]YU  
} AWL[zixR  
} ~v\hIm3=m  
YLmjEs%  
} #s{aulx  
]9@X? q  
归并排序: EZ{/]gCK  
Of#K:`1@  
package org.rut.util.algorithm.support; esteFLm`6  
$l#{_~ "m7  
import org.rut.util.algorithm.SortUtil; '%ebcL  
VWD.J  
/** CrO`=\  
* @author treeroot 1vsu[n  
* @since 2006-2-2 6}STp_x  
* @version 1.0 JaFUcpZk$  
*/ eQ\jZ0s;p  
public class MergeSort implements SortUtil.Sort{ 6y9C@5p}B  
u?Z <n:  
/* (non-Javadoc) 9N1#V K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [9HYO  
*/ {NV:|M!  
public void sort(int[] data) { qg)qjBQwA  
int[] temp=new int[data.length]; U3N(cFXn  
mergeSort(data,temp,0,data.length-1); |i u2&p >  
} k#?| yP:  
hk.yR1Y|  
private void mergeSort(int[] data,int[] temp,int l,int r){ 0+|>-b/%  
int mid=(l+r)/2; eK *W =c#@  
if(l==r) return ; kXMP=j8  
mergeSort(data,temp,l,mid); B5 &YL  
mergeSort(data,temp,mid+1,r); Br&^09S  
for(int i=l;i<=r;i++){ gg(k7e  
temp=data; (FG^UA#'  
} :Dj#VN  
int i1=l; 5pmQp}}R  
int i2=mid+1; o~k;D{Snr  
for(int cur=l;cur<=r;cur++){ !pl_Ao~(  
if(i1==mid+1) Rhv%6ekI  
data[cur]=temp[i2++]; }>,CUz  
else if(i2>r) .8x@IWJD  
data[cur]=temp[i1++];  -tMA  
else if(temp[i1] data[cur]=temp[i1++]; b@!:=_Mr  
else jJ c07r']  
data[cur]=temp[i2++]; F:,#?  
} >"b[r  
} 8(^ ,r#Gy  
kJ__:rS(T_  
} hm6pxFkX_  
?y46o2b*)  
改进后的归并排序: ZBC@xM&-  
6: GN(R$0  
package org.rut.util.algorithm.support; r*]uR /Z$  
8 #Fh>  
import org.rut.util.algorithm.SortUtil; Wxc^_iqA1  
h&P {p _Y  
/** d "B5==0I  
* @author treeroot La]4/=a  
* @since 2006-2-2 XR<G} x  
* @version 1.0 hRLKb}  
*/ POY=zUQ'/  
public class ImprovedMergeSort implements SortUtil.Sort { 9':/Sab:7v  
oAaf)?8  
private static final int THRESHOLD = 10; H<XlUCr_~+  
E)Srj~$d  
/* :cb[M5c  
* (non-Javadoc) -aT=f9u  
* 5Fh8*8u6hL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .5N Zf4:C  
*/ rXuAixu!t  
public void sort(int[] data) { .c03}RTC^  
int[] temp=new int[data.length]; (qbc;gBy  
mergeSort(data,temp,0,data.length-1); UC(9Dz  
} *.xZfi_|  
7G2vYKC'  
private void mergeSort(int[] data, int[] temp, int l, int r) { 38"cbHE3  
int i, j, k; egbb1+tY  
int mid = (l + r) / 2; OFQ{9  
if (l == r) "!^c  
return; 'cYQ ?;  
if ((mid - l) >= THRESHOLD) C?S~L5a#oC  
mergeSort(data, temp, l, mid); u,\xok"  
else L/5z!  
insertSort(data, l, mid - l + 1); &%}bRPUl  
if ((r - mid) > THRESHOLD) wCC-Y kA  
mergeSort(data, temp, mid + 1, r); }d@LSaM  
else T6;>O`B.r  
insertSort(data, mid + 1, r - mid); P$Ax c/H  
FJW`$5?  
for (i = l; i <= mid; i++) { -h=c=P  
temp = data; ?f9$OLEB  
} &`m~o/  
for (j = 1; j <= r - mid; j++) { %Dl_}  
temp[r - j + 1] = data[j + mid]; ti+pUlVrM  
} -;f+; M  
int a = temp[l]; BJ"Ay@D*  
int b = temp[r]; Na-q%ru  
for (i = l, j = r, k = l; k <= r; k++) { Up'."w_zE  
if (a < b) { V54q"kP,@.  
data[k] = temp[i++]; SK}HXG{?  
a = temp; 2=Jmi?k  
} else { B JU*`Tx  
data[k] = temp[j--]; 9Y\F53p&j  
b = temp[j]; aam1tm#Q  
} -}N Ab^d  
} 8.PXTOhVL  
} Z5yt]-WN&  
'H|;%J6d>  
/** *TJ<  
* @param data yB|]LYh  
* @param l +A&EKk%$ |  
* @param i P&h/IBA_  
*/ 7G?Ia%u  
private void insertSort(int[] data, int start, int len) { y{:]sHyG  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); PMD,8]|  
} X E!2Q7Q9  
} ?!R %o  
} {7/A  
} 1`nc8qC  
AUu5g  
堆排序: >c&4_?d&,A  
H7y&N5.V  
package org.rut.util.algorithm.support; {jrZ?e-q  
IruyE(;HS  
import org.rut.util.algorithm.SortUtil; G3oxa/mO  
:~-)Sm+^  
/** VyRW'  
* @author treeroot dE+CIjW5  
* @since 2006-2-2 )`e^F9L  
* @version 1.0 -,[~~  
*/ _!| =AIX  
public class HeapSort implements SortUtil.Sort{ <XU8a:w'T  
h5<T.vV  
/* (non-Javadoc) c9 gz!NE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W<Bxm|  
*/ 0c%@e2(N  
public void sort(int[] data) { aB/{ %%o  
MaxHeap h=new MaxHeap(); 6JUav."`~  
h.init(data); 3we.*\2$  
for(int i=0;i h.remove(); jq7vOr-_g  
System.arraycopy(h.queue,1,data,0,data.length); (N&k}CO]W  
} /QV [N  
u Eu6f  
private static class MaxHeap{ n$nne6|O  
TJeou# =/  
void init(int[] data){ H9.oVF^~  
this.queue=new int[data.length+1]; S(@*3]!q  
for(int i=0;i queue[++size]=data; _G_ &Me0  
fixUp(size); kyp U&F  
} tn(f rccy  
} }G"r3*  
Q>cL?ie  
private int size=0; #nxER   
U` ? zC~  
private int[] queue; o'9OPoof:.  
/h{go]&Nb  
public int get() { rTN"SQt  
return queue[1]; B:.;,@r]  
} Vp5V m  
;9 =}_h)]  
public void remove() { QwKky ^A  
SortUtil.swap(queue,1,size--); PR48~K,?  
fixDown(1); CnM+HN30o  
} D? ^`(X P  
file://fixdown :u[ oc.  
private void fixDown(int k) { H>gWxJ 5  
int j; O('i*o4!}  
while ((j = k << 1) <= size) { yffU% )  
if (j < size %26amp;%26amp; queue[j] j++; ?CcR 7l  
if (queue[k]>queue[j]) file://不用交换 vHZX9LQU0+  
break; Rfkzv=<"X  
SortUtil.swap(queue,j,k); PPuXas?i  
k = j; 9n06n$F  
} P wt ?9I  
} c,b`N0dOKL  
private void fixUp(int k) { c ,g]0S?gu  
while (k > 1) { 0KWy?6 X  
int j = k >> 1; ~v{C6)  
if (queue[j]>queue[k]) ?qq!%4mTB  
break; gxBl1  
SortUtil.swap(queue,j,k); [Gh%nsH  
k = j; B^Rw?: hN  
} $1Q3Y'Q9  
} $9j>VGf=  
n1k$)S$iiy  
} Wl9I`Itg  
a#OhWqu$  
} u&l>cJ'  
*SMoodFBS  
SortUtil: b#/V;  
0+VncL)u  
package org.rut.util.algorithm; 1@1+4P0NF[  
%^Q@*+{:f  
import org.rut.util.algorithm.support.BubbleSort; Zu [?'  
import org.rut.util.algorithm.support.HeapSort; b.w(x*a  
import org.rut.util.algorithm.support.ImprovedMergeSort; '&_y*"/c  
import org.rut.util.algorithm.support.ImprovedQuickSort; Up1$xLSl  
import org.rut.util.algorithm.support.InsertSort; ,=q7}5o Y  
import org.rut.util.algorithm.support.MergeSort; 5 b#" G"  
import org.rut.util.algorithm.support.QuickSort; mcP{-oJ0W  
import org.rut.util.algorithm.support.SelectionSort; =/!{<^0  
import org.rut.util.algorithm.support.ShellSort;  \\E_W9.u  
8CN7+V  
/** V29S*  
* @author treeroot :yFTaniJ'.  
* @since 2006-2-2 &y+PSa%n  
* @version 1.0 SSA%1l 2!  
*/ h0Sy'] 3m  
public class SortUtil { &K}(A{  
public final static int INSERT = 1; I;kUG_c(4  
public final static int BUBBLE = 2; W?4&lC^G  
public final static int SELECTION = 3; V5(tf'  
public final static int SHELL = 4; 5~kW-x  
public final static int QUICK = 5; cx1WGbZ  
public final static int IMPROVED_QUICK = 6; D x >1y  
public final static int MERGE = 7; sJjl)Qs)T  
public final static int IMPROVED_MERGE = 8; ECE{xoc  
public final static int HEAP = 9; mPw56>  
6qHvq A,  
public static void sort(int[] data) { 8h@)9Q]d\  
sort(data, IMPROVED_QUICK); l/y Kc8^<  
} 4%#V^??E  
private static String[] name={ 9$4/frd  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" qMW%$L\HA  
}; TGt1d  
#:Sy`G6!?  
private static Sort[] impl=new Sort[]{ -G^t-I  
new InsertSort(), bdsHA2r`s  
new BubbleSort(), tc49Ty9$[  
new SelectionSort(), j4 &  
new ShellSort(), c}I8!*\  
new QuickSort(), @88z{  
new ImprovedQuickSort(), cQ8$,fo  
new MergeSort(), _n Iqy&<  
new ImprovedMergeSort(), 4LB9w 21  
new HeapSort() tl,x@['p`  
}; &d|VH y+  
2A18hP`^  
public static String toString(int algorithm){ LK-K_!F  
return name[algorithm-1]; /Mi-lh^j-  
} 9B?t3:  
w7*b}D@65\  
public static void sort(int[] data, int algorithm) { BF1O|Q|d6  
impl[algorithm-1].sort(data); ,$zSJzS  
} #G4~]Qml  
-XDP-Trk  
public static interface Sort { \aJ-q?=  
public void sort(int[] data); bTy' 5"  
} 3Mh,NQB  
T0]%(F/8  
public static void swap(int[] data, int i, int j) { D=I5[t0c4  
int temp = data; gQ@Pw4bA  
data = data[j]; 65`'Upu  
data[j] = temp; A86lyBDQ*  
} ]9yA0,z/  
} lo]B 5_en  
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