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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。 YLV$#a3  
插入排序: 4Cvo^k/I  
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package org.rut.util.algorithm.support; l_fERp#y  
W61:$y}8  
import org.rut.util.algorithm.SortUtil; 0b2;  
/** 5'xZ9K  
* @author treeroot iT1HbAT]  
* @since 2006-2-2 w h^I|D?"  
* @version 1.0 \d w["k  
*/ d"+ _`d=`  
public class InsertSort implements SortUtil.Sort{ vY,]f^F"  
Tn$| Xa+:s  
/* (non-Javadoc) :5:_Dr<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w aDJ  
*/ |8\et  
public void sort(int[] data) { h5))D!  
int temp; +:z%#D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y|WOw(#  
} [U{RDX  
} 'b_SQ2+A  
} ^Ux*"\/Es  
Ll^9,G"Tt  
} <a2Kc '  
PU\@^)$  
冒泡排序: 1$"wN z  
O[ ^zQA  
package org.rut.util.algorithm.support; MO79FNH2\  
v2mqM5Z  
import org.rut.util.algorithm.SortUtil; jF5oc   
GU)NZ[e  
/** lpefOnO[  
* @author treeroot ,Lw '3  
* @since 2006-2-2 >Wj8[9zf  
* @version 1.0 2K2jko9'a  
*/ l" H/PB<.  
public class BubbleSort implements SortUtil.Sort{ M]e _@:!  
l,Ixz1S3e  
/* (non-Javadoc) uC1v^!D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) et}s yPH  
*/ w"j[c#vM  
public void sort(int[] data) { dJZ 9mP!d  
int temp; e1K{*h  
for(int i=0;i for(int j=data.length-1;j>i;j--){ bJ6v5YA%  
if(data[j] SortUtil.swap(data,j,j-1); GZ"J6/0-|  
} sT"{ e7;F;  
} \Eyy^pb  
} !q*]_1  
} =/HTe&  
;p)fW/<  
} [kZe6gYP&  
|7G=f9V  
选择排序: 'gz@UE1  
((Wq  
package org.rut.util.algorithm.support; I4 4bm?[S  
Ea3 4x  
import org.rut.util.algorithm.SortUtil; qd?k#Gw&  
%5 ?0+~  
/** [2ZZPY9?Q  
* @author treeroot HLDg_ On8  
* @since 2006-2-2 ekuRGG  
* @version 1.0 ` _]tN  
*/ wmgKh)`@_{  
public class SelectionSort implements SortUtil.Sort { p:^;A/D  
5nG$6Hw  
/* %g%#=a;]q  
* (non-Javadoc) 9=;ETLL "  
* @Tf5YZ*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XZ&q5]PJI  
*/ {2%@I~US  
public void sort(int[] data) { _{'HY+M  
int temp; !8>tT  
for (int i = 0; i < data.length; i++) { F!yejn [  
int lowIndex = i; YPsuG -is  
for (int j = data.length - 1; j > i; j--) { 81U(*6  
if (data[j] < data[lowIndex]) { Nv_"?er+y  
lowIndex = j; GvT'v0&+  
} w.H\j9E l  
} v#`P?B\  
SortUtil.swap(data,i,lowIndex); s&zg!~@5b  
} 'B4j=K*  
} m/W)IG>  
l=< :  
} Z"G@I= Q(  
@~<M_63  
Shell排序: ySwvjP7f  
*a4nd_!  
package org.rut.util.algorithm.support; DcQsdeuQ  
'y.'Xj:l  
import org.rut.util.algorithm.SortUtil; ``mW\=fe  
/8w _jjW  
/** $ OMGo`z  
* @author treeroot u4[3JI>  
* @since 2006-2-2 i<nUp1r(  
* @version 1.0 &U8W(NxN  
*/ X+T +y>e a  
public class ShellSort implements SortUtil.Sort{ fhp][)g;  
~;0J 4hR  
/* (non-Javadoc) w/HGmVa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `7zNVYur8  
*/ /xRPQ|  
public void sort(int[] data) { ?Y#0Je  
for(int i=data.length/2;i>2;i/=2){ ,-*oc>  
for(int j=0;j insertSort(data,j,i); ZKa.MBde  
} ef=LPCi?  
} VZ8HnNAbX  
insertSort(data,0,1); Ni[2 p  
} @cZNoD  
Yxt`Uvc(^h  
/** SD^6ib/]b  
* @param data xI7; (o"  
* @param j P=V=\T<4_  
* @param i #:?vpV#i  
*/ :kDHwYv$  
private void insertSort(int[] data, int start, int inc) { RHGs(d7-  
int temp; 438+ zU  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tA2I_W Cl  
} -\!"Kz/  
} +;Jb)8  
} V{[vIt*  
 w|>O!]K]  
} fhAK^@h  
\{G1d"n  
快速排序: @iwg`j6ol  
9+\3E4K  
package org.rut.util.algorithm.support; gs_nUgcA  
}*4K]3et$  
import org.rut.util.algorithm.SortUtil; GJY7vS^#  
?B2 T'}~  
/** it~>)_7*P  
* @author treeroot `}^_>  
* @since 2006-2-2 ;$\d^i{N  
* @version 1.0 "$tP>PO{<  
*/ L;0ZB=3n  
public class QuickSort implements SortUtil.Sort{ xhIC["z5  
FXPw 5  
/* (non-Javadoc) $b/oiy!=|3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~E=.*: 5(  
*/ ;m3SlP{F  
public void sort(int[] data) { yU~OfwQ  
quickSort(data,0,data.length-1); L s=2!  
} SPxgIP;IR  
private void quickSort(int[] data,int i,int j){ F.b;O :  
int pivotIndex=(i+j)/2; AoEG%nT  
file://swap ]3C&l+m$ot  
SortUtil.swap(data,pivotIndex,j); X'Dg= |  
V11Zl{uOl  
int k=partition(data,i-1,j,data[j]); Fa$ pr`  
SortUtil.swap(data,k,j); qsUlfv9L6  
if((k-i)>1) quickSort(data,i,k-1); zR_#c3o  
if((j-k)>1) quickSort(data,k+1,j); f#a ~av9rC  
VGY#ph%  
} L "L@4 B  
/** n; 0bVVMV  
* @param data 3 n/U4fn_  
* @param i Wm nsD!  
* @param j ;Bo{.916  
* @return `n]y"rj'  
*/ `<h}Ygo>k/  
private int partition(int[] data, int l, int r,int pivot) { \5$N> 2kO  
do{ _W4i?Bde  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \$2E  
SortUtil.swap(data,l,r); ki#O ^vl  
} z F'{{7o  
while(l SortUtil.swap(data,l,r); xr) Rx{)3h  
return l; XX5 ):1  
} %Lexu)odW  
50oNN+; =R  
}  ] }XK  
0sq1SHI{  
改进后的快速排序: `J^J_s  
a3L]'E'*#  
package org.rut.util.algorithm.support; sT9P  
#_}lF<k  
import org.rut.util.algorithm.SortUtil; )FM/^  
3VbQDPG  
/** ip4:px-  
* @author treeroot +pJ;}+  
* @since 2006-2-2 xQC.ap  
* @version 1.0 W xyQA:3s  
*/ t i)foam  
public class ImprovedQuickSort implements SortUtil.Sort { <`sVu  
ul+ +h4N  
private static int MAX_STACK_SIZE=4096; `Y-uNJ'.N  
private static int THRESHOLD=10; gOZ$rv^g  
/* (non-Javadoc) }'dnL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wh:O"&qk  
*/ 3_2(L"S2  
public void sort(int[] data) { |,j6cFNw  
int[] stack=new int[MAX_STACK_SIZE]; .!Kdi|a)  
W$@q ~/E  
int top=-1; *usfJ-  
int pivot; P@:#NU[  
int pivotIndex,l,r; \Nu(+G?e  
 gM20n^  
stack[++top]=0; KUVsCmiT  
stack[++top]=data.length-1; dWE[*a\g  
J4h7] qt  
while(top>0){ uAR!JJ  
int j=stack[top--]; FfN==2:b  
int i=stack[top--]; ~wIVw}  
ehI*cf({  
pivotIndex=(i+j)/2; B2%)G$B  
pivot=data[pivotIndex];  ;uNcrv0J  
 GWgjbp  
SortUtil.swap(data,pivotIndex,j); 4_J* 0=U  
M ]W'>g)G  
file://partition ;"\e aKl  
l=i-1; 0ANqEQX  
r=j; WEUr;f  
do{ |Sy |E  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^q@.yL  
SortUtil.swap(data,l,r); ZVJbpn<lo)  
} zv!%u=49  
while(l SortUtil.swap(data,l,r); :k075Zr/#D  
SortUtil.swap(data,l,j); {Q?AIp6u|  
{IJV(%E   
if((l-i)>THRESHOLD){ +/7UM x1  
stack[++top]=i; {%@zQ|OO0  
stack[++top]=l-1; [a\:K2*'  
} Lw?4xerLsb  
if((j-l)>THRESHOLD){ )H#Hs<)Qy  
stack[++top]=l+1; Er Ji  
stack[++top]=j; ' eO 4h^  
} 1agyT  
r80w{[S$  
} <O&L2E @~f  
file://new InsertSort().sort(data); /s(/6~D|  
insertSort(data); IP$^)t[  
} |uQJMf[L)  
/** qr$=oCqa  
* @param data Yva^JB  
*/ kg7oH.0E  
private void insertSort(int[] data) { \&]'GsfF  
int temp; KP[ax2!x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R~CQ=KQ.  
} {*As-Y:'F  
} Gk*Mx6|N  
} vY<(3[pp  
CTbdY,=B  
} "0+_P{w+  
@P6K`'.0  
归并排序: HQK%Y2S  
gAC}  
package org.rut.util.algorithm.support; !E,$@mvd  
\i}n1Qd  
import org.rut.util.algorithm.SortUtil; P49lE  
~!&WK,k6  
/** ]]Ypi=<'  
* @author treeroot aG8}R~wH&  
* @since 2006-2-2 lz EF^6I  
* @version 1.0 $:s1x\ol  
*/ u}D.yI8  
public class MergeSort implements SortUtil.Sort{ bQow,vf  
?3kfh R  
/* (non-Javadoc) U5z^R>k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y. @7aT5  
*/ /}-]n81m  
public void sort(int[] data) { {7[^L1  
int[] temp=new int[data.length]; S3i%7f^C?N  
mergeSort(data,temp,0,data.length-1); aAF:nyV~~0  
} F*o{dLJ)  
#IA[erf:  
private void mergeSort(int[] data,int[] temp,int l,int r){ CtV$lXxup  
int mid=(l+r)/2; NwoBM6 #  
if(l==r) return ; ++F #Z(p  
mergeSort(data,temp,l,mid); 7m{ 'V`F  
mergeSort(data,temp,mid+1,r); gfw,S;  
for(int i=l;i<=r;i++){ dY68wW>d|  
temp=data; "3LOL/7f  
} kdman nM  
int i1=l; v2G_p |+O  
int i2=mid+1; Pon 2!$  
for(int cur=l;cur<=r;cur++){ 9 }iEEI  
if(i1==mid+1) mm'n#%\G  
data[cur]=temp[i2++]; bv5,Yk  
else if(i2>r) ;hJTJMA6/6  
data[cur]=temp[i1++]; )}hp[*C  
else if(temp[i1] data[cur]=temp[i1++]; 1Z6<W~,1OM  
else "'p:M,:  
data[cur]=temp[i2++]; nV,qC .z  
} |8 c3%jve  
} wo$9$~(  
mMjY I1F  
} 4K[E3aA  
YwQxN"  
改进后的归并排序: Cy4@\X%W  
Bjq1za  
package org.rut.util.algorithm.support; O9oYuC:q  
?P ,z^  
import org.rut.util.algorithm.SortUtil; ;RB]awE  
(Ybc~M)z  
/** 3_~V(a  
* @author treeroot Ovv~ymj  
* @since 2006-2-2 ZK1d3  
* @version 1.0 r@f8-!{s2h  
*/ >y"W(  
public class ImprovedMergeSort implements SortUtil.Sort { Jm0P~E[n  
9TBkVbqV  
private static final int THRESHOLD = 10; RZ:Yu  
Bab`wfUve  
/* WW\u}z.QJ  
* (non-Javadoc) =LDzZ:' X  
* g2JNa?z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [U]U *x  
*/ \Pi\c~)Pr  
public void sort(int[] data) { /qed_w.p  
int[] temp=new int[data.length]; 57*z0<  
mergeSort(data,temp,0,data.length-1); #Gx%PQ`  
} wUW^ O  
7/a[;`i*!  
private void mergeSort(int[] data, int[] temp, int l, int r) { d }=fJ  
int i, j, k; *%7[{Loz  
int mid = (l + r) / 2;  gPh;  
if (l == r) "}!|V)K  
return; ci0)kxUBF  
if ((mid - l) >= THRESHOLD) >N62t9Ll[  
mergeSort(data, temp, l, mid); ST5L O#5  
else Q&@Ls?pu  
insertSort(data, l, mid - l + 1); J:Ea|tXK^  
if ((r - mid) > THRESHOLD) ?OW 4J0B'  
mergeSort(data, temp, mid + 1, r); N9tH0  
else #3>o^cN~8k  
insertSort(data, mid + 1, r - mid); NQz*P.q  
7n9&@D3 :P  
for (i = l; i <= mid; i++) { dIg/g~ t"  
temp = data; d00#;R  
} uf]S PG#/D  
for (j = 1; j <= r - mid; j++) { <k!M+}a 9V  
temp[r - j + 1] = data[j + mid]; njtz,qt_;G  
} "XlNKBgM  
int a = temp[l]; 6=U81  
int b = temp[r]; DDQ}&`s  
for (i = l, j = r, k = l; k <= r; k++) { JFH3)Q  
if (a < b) { |tIr?nXSW3  
data[k] = temp[i++]; ug{@rt/"Z  
a = temp; [Gop-Vi/~  
} else { 0uV3J  
data[k] = temp[j--]; -0r 0M )  
b = temp[j]; v/*}M&vo  
} AD K)p?  
} ^\ A[^' 9  
} 4&X D  
S "'0l S   
/** @&?E3?5ll  
* @param data `|coA2$rw  
* @param l u^|c_5J(  
* @param i $9+|_[ ]v.  
*/ h?R{5?RxK  
private void insertSort(int[] data, int start, int len) { J!Er%QUR  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :dq.@:+<R  
} 94VtGg=b}  
} J{;XNf =  
} KBE3q)  
} Wip@MGtJ  
vZ,DJ//U,  
堆排序: R d'P\  
:No`+X[Kq  
package org.rut.util.algorithm.support; DmU,}]#:  
>RJjm&M  
import org.rut.util.algorithm.SortUtil; 7irpD7P>  
-fpe  
/** H3-(.l[!b)  
* @author treeroot ^Ej$o@PH  
* @since 2006-2-2 jq%%|J.x  
* @version 1.0 '&hz *yk  
*/ <G|i!Pm  
public class HeapSort implements SortUtil.Sort{ j5m KJC  
!q\MXS($#u  
/* (non-Javadoc) ]QKo>7%[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p3r("\Za,  
*/ GsIVx!  
public void sort(int[] data) { 6_|iXs(&  
MaxHeap h=new MaxHeap(); R !g'zS'  
h.init(data); `#HtVI  
for(int i=0;i h.remove(); +t*V7nW  
System.arraycopy(h.queue,1,data,0,data.length); j9gn7LS  
} i(T[  
mi[t1cN)=  
private static class MaxHeap{ OT 0%p)  
)5T82=[h<  
void init(int[] data){ wcH,!;3z+  
this.queue=new int[data.length+1]; }uZ/^_U.  
for(int i=0;i queue[++size]=data; @$}Ct  
fixUp(size); 4>^LEp  
} `%QXaKO-  
} (#kKL??W  
Hjhgu=  
private int size=0; &~mJ ).*  
'8J!(+  
private int[] queue; H9;0$Y(e-  
;~D$ rT  
public int get() { yFoPCA86y  
return queue[1]; $%BI8_  
} <W] RyEg`  
Ri>4:V3K  
public void remove() { nTsKJX%\  
SortUtil.swap(queue,1,size--); Pi+pQFz5  
fixDown(1); "C0?s7Y  
} wZ4w`|'  
file://fixdown m)7Ql!l  
private void fixDown(int k) { &F- \t5X=i  
int j; y1{TVpN  
while ((j = k << 1) <= size) { = 6Fpixq>  
if (j < size %26amp;%26amp; queue[j] j++; )ifjK6*  
if (queue[k]>queue[j]) file://不用交换 :FTx#cZ  
break; XHU\;TF  
SortUtil.swap(queue,j,k); Qy ghNImp  
k = j; (}g4}A@x  
} GY>G}bfh  
} O&dBLh!G  
private void fixUp(int k) { {FQ@eeU  
while (k > 1) { @E 8P>kq  
int j = k >> 1; @An}  
if (queue[j]>queue[k]) 0=0,ix7?#  
break; (Bq^ D9  
SortUtil.swap(queue,j,k); l1bkhA b  
k = j; Y~ xo=v(  
} lArKfs/   
} +7\d78U  
ho-#Xbq#g  
} /KLkrW  
zmU@ k  
} SZ29B  
l+#J oc<8  
SortUtil: 0iYo&q'n  
"(r%`.l=I  
package org.rut.util.algorithm; ;6eBfMhL  
jme`Tyd  
import org.rut.util.algorithm.support.BubbleSort; 0~~yYo&  
import org.rut.util.algorithm.support.HeapSort; \q($8<  
import org.rut.util.algorithm.support.ImprovedMergeSort; {xAd>fGG+y  
import org.rut.util.algorithm.support.ImprovedQuickSort; vPz$+&{I  
import org.rut.util.algorithm.support.InsertSort; y\omJx=,  
import org.rut.util.algorithm.support.MergeSort; e2e!"kEF  
import org.rut.util.algorithm.support.QuickSort; ;FQNO:NP  
import org.rut.util.algorithm.support.SelectionSort; 9X?RJ."J  
import org.rut.util.algorithm.support.ShellSort; +4$][3.  
@XJ#oxM^  
/** C}#$wge  
* @author treeroot @ ]40xKF  
* @since 2006-2-2 f8 BZkh  
* @version 1.0 F\, vIS  
*/ [~PR\qm  
public class SortUtil { Ur]/kij  
public final static int INSERT = 1; o%bf7)~s  
public final static int BUBBLE = 2; |1GOm=GNK  
public final static int SELECTION = 3; 6Df*wi!jI  
public final static int SHELL = 4; ,<N{Y[n]e  
public final static int QUICK = 5; HfZ^ED"}  
public final static int IMPROVED_QUICK = 6; 0 N"N$f  
public final static int MERGE = 7; Xp] jF^5  
public final static int IMPROVED_MERGE = 8; j7U&a}(  
public final static int HEAP = 9; 1fvN[  
PB *v45  
public static void sort(int[] data) { []v$QR&u#v  
sort(data, IMPROVED_QUICK); )s,LFIy<A  
} qu1+.z=|  
private static String[] name={ =z;]FauR!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" RL:B.Lv/W  
}; O6/:J#X%  
;yajt\a  
private static Sort[] impl=new Sort[]{ /oW]? 9  
new InsertSort(), DK eB%k  
new BubbleSort(), iO&*WIbg  
new SelectionSort(), #i .,+Q  
new ShellSort(), ,PmUl=  
new QuickSort(), Nc &J%a  
new ImprovedQuickSort(), %3O))Ug5  
new MergeSort(), J%-4ZB"  
new ImprovedMergeSort(), {G0=A~  
new HeapSort() X;H\u6-|>6  
}; NXQ=8o9,9  
-%5#0Ogh M  
public static String toString(int algorithm){ re_nb)4g  
return name[algorithm-1]; .uVd'  
} 6I: 6+n  
jQxhR  
public static void sort(int[] data, int algorithm) { O/|))H?C  
impl[algorithm-1].sort(data); U(0FL6sPC  
} d#TA20`  
K-~gIlbQ`  
public static interface Sort { JO*/UC>"  
public void sort(int[] data); BPa,P_6(  
} CIz0Gjtx6m  
Q^ZM|(s#  
public static void swap(int[] data, int i, int j) { ]Zt]wnL+  
int temp = data; Q5ff&CE  
data = data[j]; JOpH Z?  
data[j] = temp; .dMdb7  
} ^GAJ9AF@(  
} iMt3h8  
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