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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。 1dsMmD[O  
插入排序: YC,s]~[[   
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package org.rut.util.algorithm.support; f&5'1tG  
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import org.rut.util.algorithm.SortUtil; 5SOl:{A +  
/** 1^R[kaY  
* @author treeroot Lt 8J^}kwl  
* @since 2006-2-2 YC,)t71l{  
* @version 1.0 .eZsKc-@  
*/ PRTn~!Z0  
public class InsertSort implements SortUtil.Sort{ ePD~SO9*  
>s*ZT%TF  
/* (non-Javadoc) >v\t> [9t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g$CWGB*%lm  
*/ TDqH"q0  
public void sort(int[] data) { )7`2FLG  
int temp; 3fdx&}v/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o'#ow(X  
} A.[~}ywH  
} eW"L")  
} VgBZ@*z(x  
qHQWiu% h  
} Dej_(Dz_S  
0<^!<i(%  
冒泡排序: LN!e_b  
16pk4f8  
package org.rut.util.algorithm.support; L'A>IBrz  
1\XR6q:2  
import org.rut.util.algorithm.SortUtil; >5%;NI5 G  
>)+ -:  
/** 3_5]0:?]-  
* @author treeroot h! yI(cY  
* @since 2006-2-2 2*[Gm e  
* @version 1.0 sfo+B$4|  
*/ TAE@KSPvo  
public class BubbleSort implements SortUtil.Sort{ }I )%Gw  
3 *g>kRMJ  
/* (non-Javadoc) [p:mja.6y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZUg ~8VVe  
*/ Q)lN7oD  
public void sort(int[] data) { mBtXa|PJ  
int temp; |``rSEXYs  
for(int i=0;i for(int j=data.length-1;j>i;j--){ L9"yQD^R7?  
if(data[j] SortUtil.swap(data,j,j-1); gS VWv9+  
} 78u9> H  
} *i`t4N A  
} }HLs.k4-;  
} PKxI09B  
YU]|N 'mL2  
} ' 5F3,/r  
KFuP gp  
选择排序: O3*}L2 j@  
vAV{HBQ*  
package org.rut.util.algorithm.support; Kn#CIFbBN  
C2a2K={  
import org.rut.util.algorithm.SortUtil; $eSSW+8q"  
To!` T$Xh  
/** |qAU\m"Pc  
* @author treeroot 1 x'H #  
* @since 2006-2-2 (p?7-~6|:  
* @version 1.0 1*VArr6*6  
*/ 2d60o~ E  
public class SelectionSort implements SortUtil.Sort { mD"[z}r)  
gXb * zt2  
/* n)bbEXO  
* (non-Javadoc) pPD}>q  
* .@`5>_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <Na .6P  
*/ z&Kh$ $)[  
public void sort(int[] data) { C" 2K U*  
int temp; g^mnYg5  
for (int i = 0; i < data.length; i++) { <0h,{28  
int lowIndex = i; {^ jRV@  
for (int j = data.length - 1; j > i; j--) { FpYeuH%  
if (data[j] < data[lowIndex]) { 4^IqHx;bj  
lowIndex = j; J=`2{ 'l  
} H'_v  
} nQm (UN  
SortUtil.swap(data,i,lowIndex); d"nms\=p  
} wV{jJyRl  
} ;i>(r;ZM  
:G8:b.  
} ]IM/R@  
g)**)mz[  
Shell排序: n~mP7X%wE7  
]*&`J4i  
package org.rut.util.algorithm.support; G)8H9EV  
]ME2V  
import org.rut.util.algorithm.SortUtil; 7 ~9Lj  
$ vt6~nfI  
/** :< *xG&  
* @author treeroot 8iwH^+h~  
* @since 2006-2-2 gK_#R]  
* @version 1.0 Ja[7/  
*/ ,T;T %/ S  
public class ShellSort implements SortUtil.Sort{ mJYG k_ua  
$MYAYj9r)  
/* (non-Javadoc) zEMZz$Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \T:*tgU  
*/ <KEVA?0>  
public void sort(int[] data) { #!>QXiyR  
for(int i=data.length/2;i>2;i/=2){ ?#obNQ"u]  
for(int j=0;j insertSort(data,j,i); OBEHUJ5  
} o @(.4+2m  
} m.b}A'GT  
insertSort(data,0,1); szw|`S>o  
} ph~ d%/^jI  
u$Ty|NBjn  
/**  oHR@*2b  
* @param data ~gA^tc3G  
* @param j W6!o=()  
* @param i "x4}FQ  
*/ T%TfkQ__d  
private void insertSort(int[] data, int start, int inc) { >^bSjE  
int temp; SFkB,)Z N  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $X ]t}=  
} go!jx6~;x  
} uMb[0-5  
} =EQaZ8k  
rk7d7`V  
} }Q-%ij2  
^tRy6zG  
快速排序: J_}Rsp ED  
iVZ X  
package org.rut.util.algorithm.support; o! Y61S(  
\L:+k `  
import org.rut.util.algorithm.SortUtil; Sh;Z\nj  
HvJ-P#  
/** B{2WvPX~q  
* @author treeroot eEZZ0NNe;  
* @since 2006-2-2 {D`_q|  
* @version 1.0 iNG =x   
*/ V:h3F7  
public class QuickSort implements SortUtil.Sort{ R d|M)  
G"|c_qX  
/* (non-Javadoc) -40s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9FcH\2J  
*/ 9w}_CCj3  
public void sort(int[] data) { X(qs]:  
quickSort(data,0,data.length-1); rvG0aqO `  
} N+CcWs!E  
private void quickSort(int[] data,int i,int j){ |gwGCa+  
int pivotIndex=(i+j)/2; >)8<d3m  
file://swap = 6.i.(L_S  
SortUtil.swap(data,pivotIndex,j); N D1'XCN  
z:W|GDD1  
int k=partition(data,i-1,j,data[j]); 5]F4.sa  
SortUtil.swap(data,k,j); HzZ.q2Zz%  
if((k-i)>1) quickSort(data,i,k-1); kB]?95>Wx  
if((j-k)>1) quickSort(data,k+1,j); >goG\y  
9ohO-t$XkY  
} ot; ]?M  
/** %h4|$  
* @param data D22jWm2  
* @param i UYkuz  
* @param j ur JR[$p  
* @return VX,@Gp_'m  
*/ CJf4b:SY@  
private int partition(int[] data, int l, int r,int pivot) { jVInTR0f[  
do{ ofy)}/i  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &]jCoBj+_  
SortUtil.swap(data,l,r); w|( ix;pK  
} .,&6 x.  
while(l SortUtil.swap(data,l,r); 8ps1Q2|  
return l; >d<tcaB  
} <hB~|a<#  
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} UdK+,k~m/  
U!i@XA%P  
改进后的快速排序: |3dIq=~1"Y  
k56*eEc  
package org.rut.util.algorithm.support; 4R28S]Gb  
a{+;&j[!  
import org.rut.util.algorithm.SortUtil; ,.TwM;w=  
#)z7&nD  
/** l;vA"b=]  
* @author treeroot GEZ!z5";BQ  
* @since 2006-2-2 n{E9p3i  
* @version 1.0 =0_((eXwf  
*/ l( uV@_3  
public class ImprovedQuickSort implements SortUtil.Sort { )@E'yHYO>  
~NZ}@J{00_  
private static int MAX_STACK_SIZE=4096; 7~2V5 @{<  
private static int THRESHOLD=10; szas(7kDS  
/* (non-Javadoc) n~'cKy )m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $x;(C[  
*/ &O|qx~(  
public void sort(int[] data) { UmOK7SPi  
int[] stack=new int[MAX_STACK_SIZE]; pL`)^BJ  
Bt(U,nFB  
int top=-1; n*y@3.  
int pivot; M(#]NTr ~4  
int pivotIndex,l,r; YnW,6U['{g  
eDL0Vw  
stack[++top]=0; g#r,u5<*?  
stack[++top]=data.length-1; ~vstuRRST  
41^ $  
while(top>0){ VCc57 Bo  
int j=stack[top--]; iuHs.k<z  
int i=stack[top--]; V u1|5  
d;E (^l  
pivotIndex=(i+j)/2; ^=,N] j  
pivot=data[pivotIndex]; L,* #  
e\WG-zi/  
SortUtil.swap(data,pivotIndex,j); KK41I 8Mw  
L ]QBh\  
file://partition -14~f)%NQ*  
l=i-1; mmBZ}V+&=  
r=j; 0JX/@LNg0  
do{ u!9bhL`  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7 ^n{BsN  
SortUtil.swap(data,l,r); -A)/CFIZ  
} qY|NA)E)Bp  
while(l SortUtil.swap(data,l,r); "<1-9CMl  
SortUtil.swap(data,l,j); Vo(V<2lw}  
_NB8>v  
if((l-i)>THRESHOLD){ 28=L9q   
stack[++top]=i; 6M X4h  
stack[++top]=l-1; ~[`*)(4E  
} `fUP q ;  
if((j-l)>THRESHOLD){ N3o kN8d  
stack[++top]=l+1; {14sI*b16  
stack[++top]=j; CV7%ud]E  
} A\T9>z^k  
7,,#f&jP  
} ~ _W>ND  
file://new InsertSort().sort(data); @j+X>TD  
insertSort(data); 'Z`fZ5q  
} _VI3b$  
/** ~=9]M.$  
* @param data CQ^I;[=d  
*/ kf2e-)uUs  
private void insertSort(int[] data) { x(bM   
int temp; (5&l<u"K~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &E$:^a4d  
} p^i]{"sjbU  
} *kKdL  
} jWJ/gv~ $  
u,),kj<  
} k=JT%  
F>co#  
归并排序: (*dJ   
HQtUNtZ  
package org.rut.util.algorithm.support; o!}/& '(  
{p M3f  
import org.rut.util.algorithm.SortUtil; Uiu9o]n  
V SUz+W  
/** 2~q(?wY  
* @author treeroot R4Si{J*O  
* @since 2006-2-2 ^9xsbv B0  
* @version 1.0 \'Ewn8Qv8  
*/ iWMgU:T  
public class MergeSort implements SortUtil.Sort{ dX ;G [\  
Jej-b<HmQ  
/* (non-Javadoc) q<!Kt I4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2-.%WhE/  
*/ }*3#*y "  
public void sort(int[] data) { a#i%7mfn  
int[] temp=new int[data.length]; ?*A"#0  
mergeSort(data,temp,0,data.length-1); O!.mc=Gx7  
} 3:G94cp5  
kU$M 8J.  
private void mergeSort(int[] data,int[] temp,int l,int r){ j aq/]I7  
int mid=(l+r)/2; aIABx!83>  
if(l==r) return ; NZ?|#5 3  
mergeSort(data,temp,l,mid); .47tj`L   
mergeSort(data,temp,mid+1,r); 4 Q FX  
for(int i=l;i<=r;i++){ %QKRl 5RM-  
temp=data; "f3KE=cUm  
} ?ne!LDlE|  
int i1=l; wO3K2I]>0  
int i2=mid+1; /e4#D H  
for(int cur=l;cur<=r;cur++){ ?jRyw(Q  
if(i1==mid+1) ?UV ^6  
data[cur]=temp[i2++]; J t,7S4JL  
else if(i2>r) rCFTch"  
data[cur]=temp[i1++]; x:WxEw>R  
else if(temp[i1] data[cur]=temp[i1++]; +jpC%o}C  
else QW1d&Gb.(  
data[cur]=temp[i2++]; b=j]tb,  
} O.~@V(7ah  
} .3*VkAs  
m1(cN%DBd  
} NK0hT,_  
bLpGrGJs  
改进后的归并排序: ?{M!syD<  
9dXtugp|  
package org.rut.util.algorithm.support; a?QDf5C q  
6 w:@i_2^  
import org.rut.util.algorithm.SortUtil; @C fxPA  
8ncgTCH:  
/** t?R=a-ZI  
* @author treeroot "7tEk<x  
* @since 2006-2-2 7Vxe]s  
* @version 1.0 + s snCr  
*/ Mb0cdK?hA  
public class ImprovedMergeSort implements SortUtil.Sort { 9Ucn 6[W  
MOEB{~v`;  
private static final int THRESHOLD = 10; HJ,sZ4*]]  
$S0eERg a  
/* ooPH [p  
* (non-Javadoc) 34P5[j!h  
* !^*I?9P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <r{ )*]#l  
*/ k(v8zDq*  
public void sort(int[] data) { 4?a!6  
int[] temp=new int[data.length]; 1@Zjv>jy[  
mergeSort(data,temp,0,data.length-1); K?o}B  
} Ghgo"-,#  
"nK(+Z  
private void mergeSort(int[] data, int[] temp, int l, int r) { `kP (2b  
int i, j, k; %Pb 5PIk4  
int mid = (l + r) / 2; n|oAfJUk,  
if (l == r) @#%rTKD9F  
return; F+@E6I'g  
if ((mid - l) >= THRESHOLD) @Pc]qu  
mergeSort(data, temp, l, mid); i-EFq@xl  
else c=T^)~$$  
insertSort(data, l, mid - l + 1); o(/(`/  
if ((r - mid) > THRESHOLD) 3e g<)  
mergeSort(data, temp, mid + 1, r); 3 TN?yP)  
else >Rbgg1^]5  
insertSort(data, mid + 1, r - mid);  *YFe  
r4~Bn7j2  
for (i = l; i <= mid; i++) { 2\z"6  
temp = data; Pe !eID8  
} i7[CqObzc  
for (j = 1; j <= r - mid; j++) { Q\~4J1  
temp[r - j + 1] = data[j + mid]; [k9aY$baT^  
} $z+iB;x  
int a = temp[l]; $3! j1  
int b = temp[r]; k]Y#-Q1p~  
for (i = l, j = r, k = l; k <= r; k++) { `1NxS35u  
if (a < b) { h !~u9  
data[k] = temp[i++]; J(\"\Z  
a = temp; xi=qap=S^9  
} else { 4><b3r;T'  
data[k] = temp[j--]; )-9G*3  
b = temp[j]; :ji_dQ8k  
} ~7!J/LHg  
} b\ %=mN  
} [ed%"f  
G^F4c{3c~  
/** 'r%`(Z{~  
* @param data ;C%D+"l1g  
* @param l NBR6$n  
* @param i '!!w|k d  
*/ | %af}# FQ  
private void insertSort(int[] data, int start, int len) { ctOC.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <GShm~XD2  
} k3[ ~I'  
} uKqN  
} &G@*/2A  
} r+;C}[E  
6:B[8otQ  
堆排序: {W }.z  
A==P?,RG  
package org.rut.util.algorithm.support; g?M\Z";  
WZRrqrjq  
import org.rut.util.algorithm.SortUtil; >.PLD} zE_  
'=x   
/** v|jBRKU99  
* @author treeroot .F.4fk  
* @since 2006-2-2 !wvP 24"y  
* @version 1.0 /Z>#lMg\.  
*/ ReP7c3D>p  
public class HeapSort implements SortUtil.Sort{ F5.Vhg  
!O)Ruwy  
/* (non-Javadoc) !$St=!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gyieSXz[  
*/ i}RxTmG<  
public void sort(int[] data) { #:z.Br`  
MaxHeap h=new MaxHeap(); DI9x] CR  
h.init(data); HPp Kti7g  
for(int i=0;i h.remove(); 0<Px 2/  
System.arraycopy(h.queue,1,data,0,data.length); @g""*T1:$  
} v%V$@MF  
^o|igyS9  
private static class MaxHeap{ /bVU^vo  
+"T?.,  
void init(int[] data){ 6+FmYp  
this.queue=new int[data.length+1]; mN_RB{g{  
for(int i=0;i queue[++size]=data; ]m(Uv8/6  
fixUp(size); (ui"vLk8PP  
} Z KnEg2a  
} eUVE8pZl  
F)lDK.  
private int size=0; rjQV;kX>  
&~G>pvZ  
private int[] queue; \x)T_]Gcm  
zXvAW7  
public int get() { ;-@^G 3C:  
return queue[1]; lW?}jzuo  
} &iL"=\#  
3yDa5q{  
public void remove() { [1dlV/  
SortUtil.swap(queue,1,size--); 6I72;e ^!  
fixDown(1); 4'?kyTO~  
} pb}QP  
file://fixdown kfg9l?R$I<  
private void fixDown(int k) { D>~z{H%\  
int j; 4&r^mGs,  
while ((j = k << 1) <= size) { ed2QGTgR  
if (j < size %26amp;%26amp; queue[j] j++; ~DhYiOSo  
if (queue[k]>queue[j]) file://不用交换 uOs 8|pj,  
break; %Ox*?l _  
SortUtil.swap(queue,j,k); ?A2#V(4  
k = j; 5X nA.?F^  
} {G/4#r 2>  
} ?H0 #{!s  
private void fixUp(int k) { &I:5<zK{  
while (k > 1) { mE%H5&VSI  
int j = k >> 1; m /JpYv~  
if (queue[j]>queue[k])  EP'2'51  
break; zm9>"(H  
SortUtil.swap(queue,j,k); d>)*!l2,C  
k = j; ,S2D/Y^>  
} l^%Ez?-:s  
} K]oFV   
7P?z{x':T  
} {b"V7vn,  
GG5wiN*2S  
} #<S+E7uTs  
 4EJ  
SortUtil: nxKV7d@R  
O2q`2L~  
package org.rut.util.algorithm; ]P<u^ `{*  
hoD (G X  
import org.rut.util.algorithm.support.BubbleSort; ZTVX5"#Q  
import org.rut.util.algorithm.support.HeapSort; 4W*52*'F,  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8{8J(~  
import org.rut.util.algorithm.support.ImprovedQuickSort; fl!8\4  
import org.rut.util.algorithm.support.InsertSort; AwAUm 2^  
import org.rut.util.algorithm.support.MergeSort; A|I7R -  
import org.rut.util.algorithm.support.QuickSort; ^9%G7J:vGO  
import org.rut.util.algorithm.support.SelectionSort; c-z ,}`  
import org.rut.util.algorithm.support.ShellSort; G}&B{Ir  
[, 3o  
/** kKr7c4q  
* @author treeroot ']4b}F:}  
* @since 2006-2-2 0+}42g|_Z  
* @version 1.0 ?"N, do  
*/ D/'kYoAEO  
public class SortUtil { 75u/'0~5  
public final static int INSERT = 1; y$Sn3_9 V  
public final static int BUBBLE = 2; S4aN7.'Q  
public final static int SELECTION = 3; Kp'_lKW)]q  
public final static int SHELL = 4; `|P fa  
public final static int QUICK = 5; szu!*wc9  
public final static int IMPROVED_QUICK = 6; __fa,kK{?  
public final static int MERGE = 7; 7IB<0  
public final static int IMPROVED_MERGE = 8; ;!q _+P  
public final static int HEAP = 9; eRKuy l  
S}f 3b N  
public static void sort(int[] data) { NGcd  
sort(data, IMPROVED_QUICK); :hr% 6K7  
} N DZ :`D  
private static String[] name={ +F.{:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" T"xq^h1\  
}; ?{[ ISk)  
V9&7K65-1  
private static Sort[] impl=new Sort[]{ B9^ @d  
new InsertSort(), YRa{6*M  
new BubbleSort(), y.(Yh1  
new SelectionSort(), n}/?nP\%  
new ShellSort(), 'APtY;x^{  
new QuickSort(), _<s[HGA`z  
new ImprovedQuickSort(), &YC Z L  
new MergeSort(), (8T36pt~  
new ImprovedMergeSort(), tIn dve  
new HeapSort() `G7LM55  
}; N^</:R  
5x856RQ'  
public static String toString(int algorithm){ .' foS>W=t  
return name[algorithm-1]; tljZE)  
} <LL+\kfTZO  
Sk7l&B  
public static void sort(int[] data, int algorithm) { cq:<,Ke  
impl[algorithm-1].sort(data); zG-pqE6  
} fy9mS  
j3>0oe!  
public static interface Sort { KYa}k0tVAp  
public void sort(int[] data); qaJ$0,]H+  
} &CBW>*B  
E)w6ZwV  
public static void swap(int[] data, int i, int j) { 1<|\df.  
int temp = data; v~E\u  
data = data[j]; X!H[/b:1O  
data[j] = temp; :&SvjJR  
} 4`E[ WE:Q  
}  PL"u^G`  
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