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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。 (x/:j*`K  
插入排序: e0TxJ*  
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package org.rut.util.algorithm.support; XZ8rM4 ]  
U!Zj%H1XQ0  
import org.rut.util.algorithm.SortUtil; lr;ubBbT  
/** iex%$> "  
* @author treeroot h*y+qk-!\g  
* @since 2006-2-2 $Yu'B_E6p  
* @version 1.0 glo G_*W  
*/ |uz<)  
public class InsertSort implements SortUtil.Sort{ <Qv/# k  
\reVA$M [  
/* (non-Javadoc) tb oQn~&4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '{~[e**  
*/  WvF{`N  
public void sort(int[] data) { Q\IViM  
int temp; ;*zLf 9i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5*A5Y E-  
} ^1c7\"{  
} y2?9pVLa\y  
} 1k:yU(  
6~ y'  
} KC; o   
[/*;}NUv  
冒泡排序: ;Q q_  
r{d@74  
package org.rut.util.algorithm.support; CeOA_M  
Go:(R {P  
import org.rut.util.algorithm.SortUtil; !nJl.Y$  
am3JzH  
/** ayn aV  
* @author treeroot E<! L^A M`  
* @since 2006-2-2 =AzkE]   
* @version 1.0 05HCr"k  
*/ GK,{$SC+=  
public class BubbleSort implements SortUtil.Sort{ t 3N}):  
t@#5 G* _Q  
/* (non-Javadoc) (i(E~^O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n7~3~i` D;  
*/ t>%b[(a  
public void sort(int[] data) { IFr"IOr'l  
int temp; _hl| 3 eW5  
for(int i=0;i for(int j=data.length-1;j>i;j--){  r90tXx  
if(data[j] SortUtil.swap(data,j,j-1); `EMGrw_  
} \fC;b"j  
} bG"FN/vg  
} u=s,bt,"5  
} a""9%./B  
t1 9f%d  
} e~)4v  
D5Sbs(  
选择排序: 60%fva  
i83Jy w,f  
package org.rut.util.algorithm.support; N lm}'Xt  
lU=VCuW!  
import org.rut.util.algorithm.SortUtil; [];wP '*  
IMdp"  
/** Z)~?foe'  
* @author treeroot OOIp)=4  
* @since 2006-2-2 ,Js_d  
* @version 1.0 .WN&]yr,  
*/ |zfFB7}v  
public class SelectionSort implements SortUtil.Sort { Mi(6HMA.SF  
@VOegf+N  
/* ^J^~5q8  
* (non-Javadoc) WwnBe"7M  
* *]<=04v]R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BHgs,  
*/ N#-. [9!  
public void sort(int[] data) { =bJ$>Djp  
int temp; @,Dnl v|?  
for (int i = 0; i < data.length; i++) { v+sF0 j\P  
int lowIndex = i; n{<@-6  
for (int j = data.length - 1; j > i; j--) { AIQ {^:  
if (data[j] < data[lowIndex]) { {U3jJ#K  
lowIndex = j; \pK&gdw  
} xo @|;Z>&F  
} KgD$P(J:[  
SortUtil.swap(data,i,lowIndex); 4mp)v*z  
} CpX[8>&osD  
} zCA8}](C^  
t xnH~;(  
} t'W6Fmwkx  
B[8 RBTsA  
Shell排序: 8R\6hYJ%F  
[D+PDR  
package org.rut.util.algorithm.support; GFbn>dY  
G] tT=X[  
import org.rut.util.algorithm.SortUtil; b9i_\  
B$s6|~  
/** F+R1}5-3cl  
* @author treeroot ZT/f  
* @since 2006-2-2 d!&LpODI]*  
* @version 1.0 0]DX KI  
*/ LR#.xFQ+  
public class ShellSort implements SortUtil.Sort{ =M@)q y  
\J?&XaO=  
/* (non-Javadoc) ^hEN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V?^qW#AG  
*/ w > GW  
public void sort(int[] data) { r:0RvWif  
for(int i=data.length/2;i>2;i/=2){ Dvz 6 E  
for(int j=0;j insertSort(data,j,i); VY~*QF~P  
} =|$U`~YB  
} c; .y  
insertSort(data,0,1); ]moBVRd  
} p\'X%R  
G^|b*n!!  
/** UDJ#P9uy  
* @param data zN+jn  
* @param j t,XbF  
* @param i zTG1 0  
*/ +YCWoX 2  
private void insertSort(int[] data, int start, int inc) { xk8NX-:  
int temp; G;t< dJ8  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]+qd|}^  
} g_tEUaiK  
} Fgwe`[  
} :nnch?J_  
(1er?4  
}  L=!h`k  
<$uDN].T4  
快速排序: si]MQ\i+  
v/]xdP^Z  
package org.rut.util.algorithm.support; Y@ ;/Sf$Q  
qB$QC  
import org.rut.util.algorithm.SortUtil; |4aU&OX  
BgCEv"G5  
/** ,T  3M  
* @author treeroot V+0pvgS[  
* @since 2006-2-2 6,~ %  
* @version 1.0 /N/jwLr  
*/ 1#>uqUxah  
public class QuickSort implements SortUtil.Sort{ 8BS Nm  
w[QC  
/* (non-Javadoc) Zmk 9C@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +\PLUOk  
*/ *$('ous8  
public void sort(int[] data) { yswf2F  
quickSort(data,0,data.length-1); V*%><r  
} 1)N#  
private void quickSort(int[] data,int i,int j){ LG("<CU  
int pivotIndex=(i+j)/2; ) AGE"M3X  
file://swap UAI'tRY N_  
SortUtil.swap(data,pivotIndex,j); /k\)q  
ee Bw\f0  
int k=partition(data,i-1,j,data[j]); Ix=(f0|  
SortUtil.swap(data,k,j); !]7L9TGn  
if((k-i)>1) quickSort(data,i,k-1); ky]L`w  
if((j-k)>1) quickSort(data,k+1,j); ]wbV1Y"  
3<a|_(K  
} fx^yC.$2  
/** 6(A"5B=\  
* @param data m5?t<H~  
* @param i 1Sns$t%b  
* @param j q8e]{sT'!  
* @return [zrFW g6N  
*/ daQJ{Cd,w  
private int partition(int[] data, int l, int r,int pivot) { +H? XqSC  
do{ ##] `  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?6MUyH]a  
SortUtil.swap(data,l,r); 9I1`*0A  
} gIGi7x  
while(l SortUtil.swap(data,l,r); KAr5>^<zw  
return l; 6TQ[2%X'  
} vsq |m 5  
[NGq$5  
} jR3mV  
[-)BI|S:  
改进后的快速排序: ?%Pi#%P  
vhU $GG8  
package org.rut.util.algorithm.support; XzBl }4s  
56Lt "Z F  
import org.rut.util.algorithm.SortUtil; RtaMrG=D  
\:Hh'-77q  
/** [A;0I jKam  
* @author treeroot U:aaa  
* @since 2006-2-2 =| r% lx  
* @version 1.0 q{q;X{  
*/ h)r=+Q\'(S  
public class ImprovedQuickSort implements SortUtil.Sort { 1:I _ ;O_  
b^P\Kky  
private static int MAX_STACK_SIZE=4096; gb^'u  
private static int THRESHOLD=10; )o::~ eu  
/* (non-Javadoc) u@4khN: ^p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0SZ:C(]  
*/ B-$ps=G+z  
public void sort(int[] data) { }qhND-9#@  
int[] stack=new int[MAX_STACK_SIZE]; cdL0<J b,  
|Yi_|']#  
int top=-1; &c= 3BEh  
int pivot; "t>H B6^  
int pivotIndex,l,r; +5Y;JL<%/  
d&DQ8Gm ^  
stack[++top]=0; Hv =7+O$  
stack[++top]=data.length-1; #J$z0%P  
|A)a ='Ap  
while(top>0){ [Z]CBEE  
int j=stack[top--]; ~.S/<:`U  
int i=stack[top--]; $|19]3T@Z  
3HndE~_C&  
pivotIndex=(i+j)/2; -ozcK  
pivot=data[pivotIndex]; t0ZaIE   
#6 $WuIG  
SortUtil.swap(data,pivotIndex,j); k,/2]{#53d  
v@:m8Y(t  
file://partition 5lE9UoG[Q  
l=i-1; OK:YnSk"  
r=j; t1o_x}z4.  
do{ ]rO/IuB  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); VQ2B|v  
SortUtil.swap(data,l,r); e= ",58  
} 1L _(n  
while(l SortUtil.swap(data,l,r); MnW"ksH  
SortUtil.swap(data,l,j); ;'4Kg@/  
6.3qux9  
if((l-i)>THRESHOLD){ #4& <d.aw'  
stack[++top]=i; -D_xA10  
stack[++top]=l-1; jXyK[q&O&  
} kl5Y{![/&f  
if((j-l)>THRESHOLD){ A^7}:[s20  
stack[++top]=l+1; :rN5HOg^9  
stack[++top]=j; Ec!R3+  
} *,XT;h$'>  
].N%A07  
} [ldx_+xa:E  
file://new InsertSort().sort(data); 69``j{Z+  
insertSort(data); Gwfi  
} 4m_CPe  
/** DV~g  
* @param data K=J">^uW  
*/ KyzdJ^xC"  
private void insertSort(int[] data) { G>+iisb%  
int temp;  11-?M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !4+@b s  
} {MmK:C  
} cq 1)b\|  
} %T~LK=m  
+?C7(-U>  
} 8wzQr2:  
wg KM6?  
归并排序: $"{I| UFC  
U0dhr;l  
package org.rut.util.algorithm.support; )s8{|)-  
FzQ6UO~'  
import org.rut.util.algorithm.SortUtil; Z}r9jM  
9Qc=D"'  
/** ~qb-uT\(99  
* @author treeroot 24d{ol)  
* @since 2006-2-2 @Yzb6@g"  
* @version 1.0 esHcE{GNOS  
*/ TZE;$:1vx>  
public class MergeSort implements SortUtil.Sort{ I !g+K  
Vs&Ul6@N  
/* (non-Javadoc) 4]ETF+   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q<Wz9lDMNR  
*/ 2!6-+]tC  
public void sort(int[] data) { Q|W~6  
int[] temp=new int[data.length]; -T.C?Q g  
mergeSort(data,temp,0,data.length-1); }Ld eU:E4  
} _n!W4zwi  
Q+^"v]V`d  
private void mergeSort(int[] data,int[] temp,int l,int r){ h8?E+0  
int mid=(l+r)/2; Ku]<$uo  
if(l==r) return ; 95BRZ!ts  
mergeSort(data,temp,l,mid); xayd_RB9  
mergeSort(data,temp,mid+1,r); :@sjOY  
for(int i=l;i<=r;i++){ TM`6:5ONv  
temp=data; w?A6S-z  
} p!p:LSk"/b  
int i1=l; tD3v`Ke  
int i2=mid+1; :3By7BZgj  
for(int cur=l;cur<=r;cur++){ sKGR28e  
if(i1==mid+1) \t']Lf  
data[cur]=temp[i2++]; bc*CP0t|  
else if(i2>r) #TG.weTC  
data[cur]=temp[i1++]; FK`M+ j  
else if(temp[i1] data[cur]=temp[i1++]; S1d{! ` 3  
else , Y cF~  
data[cur]=temp[i2++]; 4j-%I7  
} fdzaM&  
} 1<&nHFJ;[  
ZD`0(CkXb  
} 0^zp*u  
G}gmkp]z  
改进后的归并排序: iig@$ i#  
kZHIzU  
package org.rut.util.algorithm.support; Nmu=p~f}3`  
,~qjL|9  
import org.rut.util.algorithm.SortUtil; )W$@phY(I  
$|!@$Aj  
/** 9i/VvW  
* @author treeroot {&s.*5  
* @since 2006-2-2 ?M@ff0  
* @version 1.0 @N+6qO}  
*/ XiN@$  
public class ImprovedMergeSort implements SortUtil.Sort { _6{XqvWqb  
{x/)S*:Z  
private static final int THRESHOLD = 10; =9cN{&qf  
. I#dR*  
/* !6DH6<HC  
* (non-Javadoc) !ZTBiC5R  
* 3q:>NB<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bq#B+JwX  
*/ >r5s>A[YC  
public void sort(int[] data) { ?UV!^w@L:0  
int[] temp=new int[data.length]; g)Dg=3+>  
mergeSort(data,temp,0,data.length-1); Sv|jR r'  
} '7/c7m/$X<  
&{H LYxh   
private void mergeSort(int[] data, int[] temp, int l, int r) { <& p0:S7  
int i, j, k; _q1E4z  
int mid = (l + r) / 2; "o>gX'm*  
if (l == r) 56^#x  
return; !Di*y$`}b  
if ((mid - l) >= THRESHOLD) s!F` 0=J^  
mergeSort(data, temp, l, mid); 2]f?c%)I  
else EiWsVic[  
insertSort(data, l, mid - l + 1); .]H1uoci|  
if ((r - mid) > THRESHOLD) 2vx1M6a)L  
mergeSort(data, temp, mid + 1, r); ! )PV-[2  
else AWn$od`#s  
insertSort(data, mid + 1, r - mid); C9%2}E3Z$)  
P`!31P#]L  
for (i = l; i <= mid; i++) { kC4}@{4i  
temp = data; m #}%l3$  
} (SGU]@)g  
for (j = 1; j <= r - mid; j++) { rk .tLk  
temp[r - j + 1] = data[j + mid]; Z^SF $+UN  
} yUp"%_t0  
int a = temp[l]; S 0L"5B@  
int b = temp[r]; 0dKi25J  
for (i = l, j = r, k = l; k <= r; k++) { xRPU GGv  
if (a < b) { ]J>{ZL   
data[k] = temp[i++]; `u7"s'  
a = temp; iP^o]4[c  
} else { "Zq)y_1  
data[k] = temp[j--]; S67>yqha  
b = temp[j]; 3pk `&'  
} /5 6sPl 7}  
} >pq= .)X}  
} $@ Fvl-lK  
}E]&,[4&M  
/** j9]H~:g$d  
* @param data O[/l';i  
* @param l 47 *,  
* @param i y( uE  
*/ =[T_`*s&  
private void insertSort(int[] data, int start, int len) { ZVX!=3VT  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5zR9N>!c  
} f+iM_MI  
} ^t#W?rxp&  
} +U];  
} `U[s d*C"  
?ta(`+"  
堆排序: mhZ60RW  
{Mx3G*hr  
package org.rut.util.algorithm.support; 8O0E;6b  
-^+!:0';  
import org.rut.util.algorithm.SortUtil; NT}r6V(Aju  
[$[1|r *Q  
/** ^jxV  
* @author treeroot Zr U9oy&!C  
* @since 2006-2-2 ?*h 2:a$  
* @version 1.0 &m J +#vT  
*/ ~i ImM|*0  
public class HeapSort implements SortUtil.Sort{ g8^YDrH  
qS{E+)P  
/* (non-Javadoc) s#*T(pY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [h^>Iq (Z  
*/ Gcz@z1a=n  
public void sort(int[] data) { 4OOH 3O  
MaxHeap h=new MaxHeap(); pk,]yi,ZF  
h.init(data); ,]UCq?YW)T  
for(int i=0;i h.remove(); GIGC,zP@k  
System.arraycopy(h.queue,1,data,0,data.length); , e6}p  
} //_aIp  
h<8.0  
private static class MaxHeap{ ?rG>SA>o  
q V +gQ  
void init(int[] data){ D3BT>zTGK  
this.queue=new int[data.length+1]; ?6=u[))M&  
for(int i=0;i queue[++size]=data; rbw5.NU  
fixUp(size); JL1z8Nu  
} ~p0M|  
} bm:"&U*tu'  
sa26u`?  
private int size=0; 4Y#F"+m.]  
'**dD2 n  
private int[] queue; 50l! f7  
,-GkP>8f(  
public int get() { Ja@zeD)f"  
return queue[1]; wQV[ZfU^h  
} _R 6+bB$  
ySEhi_)9^  
public void remove() { Xi~%,~  
SortUtil.swap(queue,1,size--); ;&N=t64"  
fixDown(1); vL,:Yn@b  
} &+v!mw>  
file://fixdown yaD_c;  
private void fixDown(int k) { X/l{E4Ex  
int j; 3r]:k) J  
while ((j = k << 1) <= size) { ~Os1ir.  
if (j < size %26amp;%26amp; queue[j] j++; ,4&?`Q  
if (queue[k]>queue[j]) file://不用交换 `f~\d.*U  
break; QxaW x  
SortUtil.swap(queue,j,k); g} /efE  
k = j; [_pw|BGp  
} MY]<^/Q  
} 6 ?C|pO  
private void fixUp(int k) { ?mCino  
while (k > 1) { <HC5YA)4  
int j = k >> 1; w#!^wN  
if (queue[j]>queue[k]) zc n/LF  
break; (v'#~)R_`  
SortUtil.swap(queue,j,k); F^/1 u  
k = j; qlJzXq{|`  
} (WISf}[l;  
} z9B" "ws  
[$<\*d/  
} ..5rW0lr  
(&)PlIi7  
} 8w Xnc%  
WX9ABh&5  
SortUtil: g]V_)}  
m@Vz42g~+  
package org.rut.util.algorithm; @*VfG CQ(  
Z@G[\"  
import org.rut.util.algorithm.support.BubbleSort; TJY  [s-  
import org.rut.util.algorithm.support.HeapSort; @g{FNXY$m  
import org.rut.util.algorithm.support.ImprovedMergeSort; 3iI 4yg  
import org.rut.util.algorithm.support.ImprovedQuickSort; Q2L>P<87T  
import org.rut.util.algorithm.support.InsertSort; \pVmSac,  
import org.rut.util.algorithm.support.MergeSort; ]#fmih^  
import org.rut.util.algorithm.support.QuickSort; |*T3TsP u  
import org.rut.util.algorithm.support.SelectionSort; ~g|Z6-?4Jj  
import org.rut.util.algorithm.support.ShellSort; B,_/'DneQK  
1#D&cx6  
/** %\|9_=9Wn  
* @author treeroot {%"n[DLps  
* @since 2006-2-2 $q iY)RE  
* @version 1.0 pr) `7VuKp  
*/ R'udC}  
public class SortUtil { ?m(]@6qa  
public final static int INSERT = 1; s6k@WT?"^  
public final static int BUBBLE = 2; a At<36{?  
public final static int SELECTION = 3; )#H&lH  
public final static int SHELL = 4; L^{1dVGWNa  
public final static int QUICK = 5; 6Kbc:wlR  
public final static int IMPROVED_QUICK = 6; E<~Fi .M;\  
public final static int MERGE = 7; o^!_S5zKe.  
public final static int IMPROVED_MERGE = 8; djk?;^8  
public final static int HEAP = 9; Jx jP'8  
+~x'1*A_  
public static void sort(int[] data) { %lbDcEsf9  
sort(data, IMPROVED_QUICK); Oe/&Ryj=mm  
} g"dq;H  
private static String[] name={ hp$/O4fD  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .yF@Ow  
}; cOq'MDr  
zarxv| }$  
private static Sort[] impl=new Sort[]{ Ki,SFww8r  
new InsertSort(), cUH. ^_a  
new BubbleSort(), 1z6$>{FUR  
new SelectionSort(), wOLDHg_  
new ShellSort(), 0'QX*xfa>  
new QuickSort(), d5z=fH9  
new ImprovedQuickSort(), 2&,jO+BqE@  
new MergeSort(), tpY]Mz[J  
new ImprovedMergeSort(), v><c@a=[  
new HeapSort() :]rb}1nLB  
}; `k.Tfdu)K  
 mdtG W  
public static String toString(int algorithm){ xk:=.Qqh  
return name[algorithm-1]; 'e(]woe  
} T) Zef  
' a>YcOw  
public static void sort(int[] data, int algorithm) { )-s9CWJv  
impl[algorithm-1].sort(data); 'xP&u<(F  
} pK|~G."6e  
2A95vC'u>|  
public static interface Sort { -P.51q  
public void sort(int[] data); %A$5mi^  
} JqmxS*_P  
n6xJ  
public static void swap(int[] data, int i, int j) { HVHd@#pDZ  
int temp = data; V'q?+p] a  
data = data[j]; RDSkFK( D  
data[j] = temp; {O=PVW2S  
} #aua6V!"  
} 1 O?bT,"b  
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