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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。 7@!ne&8Z?  
插入排序: ^hwTnW9Z1:  
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package org.rut.util.algorithm.support; V*+Z=Y'  
y(6*)~Dh  
import org.rut.util.algorithm.SortUtil; &~N@M!`Dn  
/** PAjH*5I A  
* @author treeroot hRktvO)K  
* @since 2006-2-2 JW=P} h  
* @version 1.0 u`Zj~ t  
*/ !X{>?.@~  
public class InsertSort implements SortUtil.Sort{ WaDdZIz4  
ET=-r  
/* (non-Javadoc) !-|{B3"6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :}~B;s0M\  
*/ FJ V!B&  
public void sort(int[] data) { `< cn  
int temp; .^FdO$"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j !rQa^   
} /HM 0p  
} 0bI} s`sr  
} FP h1}qS  
gY!#=?/S  
} e_t""h4D  
lZhd^69y  
冒泡排序: Xp_G9I,+  
s% (|z  
package org.rut.util.algorithm.support; &/]g@^h9  
wD`jks  
import org.rut.util.algorithm.SortUtil; 0r'<aA`=I  
!:<n]-U  
/** ]w9\q*S]  
* @author treeroot ~&T%u.u 7  
* @since 2006-2-2 q5ja \  
* @version 1.0 ^q)s  
*/ DH{^9HK  
public class BubbleSort implements SortUtil.Sort{ bZzB\FB~  
]='zY3  
/* (non-Javadoc) xe!6Pgcb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =S}SZYw l  
*/ ;UDd4@3`S"  
public void sort(int[] data) { Ny)N  
int temp; ~jn~M_}K  
for(int i=0;i for(int j=data.length-1;j>i;j--){ :]k`;;vh  
if(data[j] SortUtil.swap(data,j,j-1); "1%YtV5R{  
} gOKF%Ej31T  
} ?'r=>'6D  
} Jde@T h  
} d{G*1l(X  
c*HWH$kB  
} 0GP\*Y8  
hV7]/z!d  
选择排序: Q"=$.M~  
Sk|DVV $  
package org.rut.util.algorithm.support; 4-veO3&.h  
"$rmy>d  
import org.rut.util.algorithm.SortUtil; [,As;a*o  
>7I"_#x1:  
/** ,"EgYd8-'  
* @author treeroot |?/,ED+|>D  
* @since 2006-2-2 }0z]sYI  
* @version 1.0 Rt2<F-gY  
*/ Fl0 :Z  
public class SelectionSort implements SortUtil.Sort { nN$aZSb`  
N=@Nn)  
/* eY#_!{*Wn  
* (non-Javadoc) (,!G$~Sy  
* t,vj)|:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0s'H(qE,_  
*/ rf]'V Jg#3  
public void sort(int[] data) { GFppcL@a  
int temp; g;G]Xi.B}  
for (int i = 0; i < data.length; i++) { Ir :y#  
int lowIndex = i; akB+4?+s)  
for (int j = data.length - 1; j > i; j--) { ;>Q.r{P  
if (data[j] < data[lowIndex]) { A4`3yy{0-  
lowIndex = j; ;;? Zd  
} Hm*?<o9mxC  
} 6 r}R%{  
SortUtil.swap(data,i,lowIndex); o1?bqVF;6  
} )CM3v L {  
} TM2pE/P  
(D1$&  
} >4&s7][Q|  
&h_do8R  
Shell排序: wseb]=U  
lZf=#  
package org.rut.util.algorithm.support; Tj v)jD  
g\ q*,1  
import org.rut.util.algorithm.SortUtil; jNu`umS  
asd3J  
/** LOX}  
* @author treeroot gUtxyW  
* @since 2006-2-2  mX&!/U  
* @version 1.0 7ts`uI<E@7  
*/ v3 ]mZ}W$  
public class ShellSort implements SortUtil.Sort{ yHIZpU|(j  
*p Q'w  
/* (non-Javadoc) O/1:2G/`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qnCJrY6]  
*/ kK&M>)&o#  
public void sort(int[] data) { >3&Oe  
for(int i=data.length/2;i>2;i/=2){ uXkc07 r'  
for(int j=0;j insertSort(data,j,i); %.[jz,;)  
} 49d02AU%  
} $9}jU#Z|hd  
insertSort(data,0,1); bji^b@ us_  
} 7x5wT ?2W  
OuuN~yC  
/** ILyI%DA&  
* @param data SL ) ope  
* @param j ;VW->i a6  
* @param i +u\kTn  
*/ TcKt   
private void insertSort(int[] data, int start, int inc) { 2vh@KnNU  
int temp; 7+;$_,Xo<  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v_L2>Pa.  
} c[<>e#s+;  
} n3B#M}R  
} $z48~nu@ j  
3[;fO_R  
} 4Mck/i2  
S\"#E:A  
快速排序: "eG@F  
/{71JqFis  
package org.rut.util.algorithm.support; :pXY/Pa  
vp|'Yy(9z  
import org.rut.util.algorithm.SortUtil; Xdl7'~k  
Ahf71YP  
/** V7(-<})8  
* @author treeroot 2m{d>  
* @since 2006-2-2  hSgH;k  
* @version 1.0 Fz.Ij'8.H  
*/ qac8zt#2 C  
public class QuickSort implements SortUtil.Sort{ -,a@bF:  
`W9~u: F  
/* (non-Javadoc) CAa&,ZR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 57( 5+Zme  
*/ dKJ-{LV  
public void sort(int[] data) { p>9|JMk  
quickSort(data,0,data.length-1); [!ilcHE)  
} E/@  
private void quickSort(int[] data,int i,int j){ 8.ej65r*   
int pivotIndex=(i+j)/2; E]dc4US  
file://swap ^d@ME<mb  
SortUtil.swap(data,pivotIndex,j); y%!zXK`cl]  
Iq@&?,W  
int k=partition(data,i-1,j,data[j]); d.xT8l}sS  
SortUtil.swap(data,k,j); 8T5W6Zs1  
if((k-i)>1) quickSort(data,i,k-1); 4Is Wp!`W  
if((j-k)>1) quickSort(data,k+1,j); 6`WI S4  
Uu[dx}y  
} y&L Lx[8 ^  
/** u9u'!hAGH  
* @param data J;*2[o.N  
* @param i vI \8@97  
* @param j sv)4e)1  
* @return ~B\O{5W  
*/ LbUH`0:%t  
private int partition(int[] data, int l, int r,int pivot) { lS{ ^*(a  
do{ t03T1.:(Mg  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); e7r3o,!  
SortUtil.swap(data,l,r); w0PAtu  
} BG_6$9y  
while(l SortUtil.swap(data,l,r); hdDL92JVg  
return l; QB"+B]rV  
} p]rV\,Yss  
s1bb2R  
} 6 \}.l  
2sYz$ZGC"#  
改进后的快速排序: %$'Z"njO&  
WDJ rN  
package org.rut.util.algorithm.support; GG %*d]  
XwIhD  
import org.rut.util.algorithm.SortUtil; eCjyx|:J  
d)kOW!5\  
/** !@>q^_Gez  
* @author treeroot n(#[[k9&Ic  
* @since 2006-2-2 C6A!JegU  
* @version 1.0 Y^b}~t  
*/ 9L>73P{_  
public class ImprovedQuickSort implements SortUtil.Sort { M44$E4a20  
"u)Le6.  
private static int MAX_STACK_SIZE=4096; Uf9L*Z'6il  
private static int THRESHOLD=10; nh? JiH {  
/* (non-Javadoc) M_h8{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nd"$gi  
*/ JC# 5CCz  
public void sort(int[] data) { qwq5y t?  
int[] stack=new int[MAX_STACK_SIZE]; T0N6k acl  
NInZ~4:  
int top=-1; YB.@zL0.(  
int pivot; piFZu/~Gq\  
int pivotIndex,l,r; jS)YYk5  
Z+_xX  
stack[++top]=0; 0|ekwTx.  
stack[++top]=data.length-1; [U:P&)  
N%9?8X[5  
while(top>0){ AWg'J  
int j=stack[top--]; EUW>8kw0  
int i=stack[top--]; 9W&nAr  
HGF&'@dn  
pivotIndex=(i+j)/2; e?pQuF~  
pivot=data[pivotIndex]; T1%}H3  
h)^|VM   
SortUtil.swap(data,pivotIndex,j); Js^(mRv=  
>J#/IjCW  
file://partition e/x6{~ju^N  
l=i-1; 'EN80+xYX  
r=j; n<1*cL:8B  
do{ Hc-up.?v'v  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qMw_`dC  
SortUtil.swap(data,l,r); ;]k\F  
} :KqSMuKR  
while(l SortUtil.swap(data,l,r); ^oR qu  
SortUtil.swap(data,l,j); R ^ZOcONd-  
@"H7Q1Hg!*  
if((l-i)>THRESHOLD){ ^$]iUb{\  
stack[++top]=i; OI kjO}/7  
stack[++top]=l-1; F$i 6  
} x~F YG  
if((j-l)>THRESHOLD){ p_vl dTIW  
stack[++top]=l+1; ">Ms V/  
stack[++top]=j; f4VdH#eng`  
} ]x(6^:D5  
^^< C9  
} LW#U+bv]Dq  
file://new InsertSort().sort(data); S(/ ^_Y  
insertSort(data); nJ$2RN  
} ia,5=SKJ  
/** '6\ZgOO9  
* @param data 0O>M/ *W  
*/ Jp|eKZ  
private void insertSort(int[] data) { ]wfY<Z  
int temp; D&i, `j  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Bd- &~s^  
} 2vhP'?;K  
} 1/i1o nu}  
} %V#MUi1  
0/1=2E ^,  
} ?9>wG7cps7  
PHJHW#sv  
归并排序: w`fbUh6/  
tx)$4v  
package org.rut.util.algorithm.support; ?uU_N$x  
X|D-[|P  
import org.rut.util.algorithm.SortUtil; 6uKP BL@,  
3,2$Ny3N  
/** KW3<5+w]c  
* @author treeroot EhW"s%Q  
* @since 2006-2-2 TL)7X.1'L  
* @version 1.0 HXC\``E  
*/ $G{j[iLY  
public class MergeSort implements SortUtil.Sort{ Y[_|sIy*  
n-{d7haOa  
/* (non-Javadoc) !aKu9SR^e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *$`N5;7'`  
*/  \m+=|  
public void sort(int[] data) { =vvd)og  
int[] temp=new int[data.length]; |=KzQY|u  
mergeSort(data,temp,0,data.length-1); a)c;z@r  
} #9 Fk&Lx  
Ul6|LTY  
private void mergeSort(int[] data,int[] temp,int l,int r){ l)~ U8  
int mid=(l+r)/2; q'4P/2)va  
if(l==r) return ; iOSt=-p  
mergeSort(data,temp,l,mid); z]-m<#1  
mergeSort(data,temp,mid+1,r); uA;#*eiA/  
for(int i=l;i<=r;i++){ <QC7HR  
temp=data; A?$-Uqb"  
} LI&E.(:  
int i1=l; bsr]Z&9rrk  
int i2=mid+1; ;#S]mso1  
for(int cur=l;cur<=r;cur++){ e+F $fQt>  
if(i1==mid+1) /GM!3%'=  
data[cur]=temp[i2++]; r:$*pC&{  
else if(i2>r) R4P&r=?  
data[cur]=temp[i1++]; |yz o|%]3  
else if(temp[i1] data[cur]=temp[i1++]; >d&0a:  
else f F)M'C  
data[cur]=temp[i2++];  "\T-r2  
} (6NDY5h~=n  
} fA]sPh4Uag  
IR$d?\O3  
} x X[WX#'f  
TJZ/lJU  
改进后的归并排序: z wRF-{s  
 7U1 M;@y  
package org.rut.util.algorithm.support; _+nk3-yQw  
g/ShC8@=u  
import org.rut.util.algorithm.SortUtil; *s-s1v  
-mGG:#yP  
/** " DLIx}  
* @author treeroot H&%oHyK  
* @since 2006-2-2 54JZOtC3~  
* @version 1.0 }9W[7V?  
*/ K3`!0(  
public class ImprovedMergeSort implements SortUtil.Sort { JZ![:$:  
qV idtSb  
private static final int THRESHOLD = 10; @ S[As~9X  
0^nF : F  
/* uDkX{<_Xe  
* (non-Javadoc) 4lpcJ+:o  
* Lu:*nJ%1[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {r$Ewc$Yb7  
*/ QV HI}3~  
public void sort(int[] data) { X>Q44FV!  
int[] temp=new int[data.length]; LAnC8O  
mergeSort(data,temp,0,data.length-1); On~KTt3Mp  
} rNo/H<J%+j  
>5Lp;  
private void mergeSort(int[] data, int[] temp, int l, int r) { ZzTkEz >  
int i, j, k; U^ , !  
int mid = (l + r) / 2; 4e.19H9  
if (l == r) }F/w34+;  
return; I= <eCv  
if ((mid - l) >= THRESHOLD) L@=$0p41;  
mergeSort(data, temp, l, mid); lF.kAEC  
else )*XWe|H_  
insertSort(data, l, mid - l + 1); Vp~ cN  
if ((r - mid) > THRESHOLD) iu*&Jz)D>  
mergeSort(data, temp, mid + 1, r); 0A~UuH0.  
else dQ-shfTr]  
insertSort(data, mid + 1, r - mid); \,X)!%6kZ  
.K(9=yh  
for (i = l; i <= mid; i++) { R) dP=W*  
temp = data; ~$C<^?"b  
} _>;MQ)Km~  
for (j = 1; j <= r - mid; j++) { trrK6(p  
temp[r - j + 1] = data[j + mid]; 1W\wIj.  
} ^0cbN[~/ns  
int a = temp[l]; ",vK~m2W_  
int b = temp[r]; hgW1g#  
for (i = l, j = r, k = l; k <= r; k++) { L[ D+=  
if (a < b) { uKXD(lzX  
data[k] = temp[i++]; ik/ X!YTu*  
a = temp; PX/{!_mM  
} else { X<Cf y  
data[k] = temp[j--]; -ZSN0Xk  
b = temp[j]; y9R%%i  
} 3Og}_  
} ZYY2pY 1  
} x*'H@!!G  
>K4Nn(~ys  
/** d_pIB@J  
* @param data [pm IQ228  
* @param l 0x5Ax=ut  
* @param i !1i-"rR  
*/ : -#w  
private void insertSort(int[] data, int start, int len) { l-v m`-_#  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); uI?Z_  
} ilJ`_QN  
} <dD!_S6@,  
} >2pxl(i  
} =j- ,yxBvJ  
;UpJ_y)n8\  
堆排序: wf]?:'}  
f"j9C% '*  
package org.rut.util.algorithm.support; hI*v )c  
EKF4 ]  
import org.rut.util.algorithm.SortUtil; E' `;  
fi*b]a\'  
/** xl,% Z~[  
* @author treeroot ,'`yh|}G\  
* @since 2006-2-2 R59iuHQ[  
* @version 1.0 SZ[?2z  
*/ a$Ud"  
public class HeapSort implements SortUtil.Sort{ yc3/5]E&  
l P=I0A-  
/* (non-Javadoc) p~8O6h@J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^L d5<  
*/ x X3I`  
public void sort(int[] data) { X,3\c:  
MaxHeap h=new MaxHeap(); bK0(c1*a[e  
h.init(data); [[<TW}  
for(int i=0;i h.remove(); SZrc-f_  
System.arraycopy(h.queue,1,data,0,data.length); j;y(to-e>D  
} TS+jDs  
pA_u;*  
private static class MaxHeap{ Yu)GV7\2  
M_%KhK  
void init(int[] data){ }`QZV_  
this.queue=new int[data.length+1]; XtZd% #2},  
for(int i=0;i queue[++size]=data; -o"b$[sf=Z  
fixUp(size); zo "L9&Hzo  
} aBaiXv/*  
} ;-py h(  
%au>D  
private int size=0; xsRkO9x  
>Q@y8*E\F  
private int[] queue; U@yhFj_y  
Et }%)M  
public int get() { Ieq_XF]U  
return queue[1]; ]W Yub1  
} aLm~.@Q  
52o^]  
public void remove() { T>(X`(  
SortUtil.swap(queue,1,size--); oVHe<zE.  
fixDown(1); Y0lLO0'  
} M"s:*c_6  
file://fixdown  C&qo$C  
private void fixDown(int k) { \Q}Y"oq  
int j; "DvZCf[}  
while ((j = k << 1) <= size) { s=jH1^  
if (j < size %26amp;%26amp; queue[j] j++; P~!,"rY  
if (queue[k]>queue[j]) file://不用交换 o@360#njF  
break; ;g#nGs>  
SortUtil.swap(queue,j,k); )_j(NX-C:  
k = j; x5PM ]~"p  
} =d"5k DK-m  
} "pK<d~Wu  
private void fixUp(int k) { jf;n*  
while (k > 1) { @,,G]4zZ!  
int j = k >> 1; [6g$;SicT  
if (queue[j]>queue[k]) 1CZO+MB&"$  
break; Z~94<*LEp  
SortUtil.swap(queue,j,k); DS%]7,g]  
k = j; ]CcRI|g}  
} M'R ] ''  
} 85dC6wI4K  
*mj=kJ7(  
} X)RgXl{  
#=)>,6Z w  
} 5$:9nPAH  
0w TOdCvmb  
SortUtil: g.62XZF@  
t%^&b'/Z  
package org.rut.util.algorithm; ~};q/-[r  
kFkI[WKyZ  
import org.rut.util.algorithm.support.BubbleSort; u Uq= L  
import org.rut.util.algorithm.support.HeapSort; <"p-0=IgJ  
import org.rut.util.algorithm.support.ImprovedMergeSort; U&*%KPy`  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2x|F Vp  
import org.rut.util.algorithm.support.InsertSort; 5Zhl@v,L%  
import org.rut.util.algorithm.support.MergeSort; 0'A"]6  
import org.rut.util.algorithm.support.QuickSort; jbZTlG  
import org.rut.util.algorithm.support.SelectionSort; ~-H3]  
import org.rut.util.algorithm.support.ShellSort; Qp:m=f6@  
r~QE}00@^  
/** ps`j>vX*  
* @author treeroot hop| xtai;  
* @since 2006-2-2 Au)~"N~p?  
* @version 1.0 c]U+6JH  
*/ 6Xo"?f  
public class SortUtil { PvW4%A@0  
public final static int INSERT = 1; Bnwq!i!M  
public final static int BUBBLE = 2; wmR~e  
public final static int SELECTION = 3; )@Y< <9'2  
public final static int SHELL = 4; /|&4&$  
public final static int QUICK = 5; bxO/FrwTj{  
public final static int IMPROVED_QUICK = 6; BL>~~  
public final static int MERGE = 7; W79.Nj2`  
public final static int IMPROVED_MERGE = 8; `h :!^"G  
public final static int HEAP = 9; qW4\t  
Qqj9o2  
public static void sort(int[] data) { :,$"Gk  
sort(data, IMPROVED_QUICK); %}~(%@qB>+  
} T?Z&\g0yp  
private static String[] name={ {=&( { cS  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" eYkg4O'  
}; I!kR:Z  
@\oZ2sB  
private static Sort[] impl=new Sort[]{ < 0~1   
new InsertSort(), [%6)  
new BubbleSort(), 6,~ 1^g*  
new SelectionSort(), aEa+?6;D  
new ShellSort(), !vK0|eV3  
new QuickSort(), ?D9iCP~~  
new ImprovedQuickSort(), /ET+`=n  
new MergeSort(), CsT&}-C  
new ImprovedMergeSort(), %8Y+Df;ax  
new HeapSort() ~@@$-,}X   
}; *""W`x  
<|G!Qn?2-  
public static String toString(int algorithm){ 5efN5Kt  
return name[algorithm-1]; ;iJxJX\+  
} a ^juZ  
# &5.   
public static void sort(int[] data, int algorithm) { -h ^MX  
impl[algorithm-1].sort(data); qq[Dr|%7  
} Sj/v:  
&AeNrtGu  
public static interface Sort { ;0?OBUDO  
public void sort(int[] data); R/E6n &R  
} '?_~{\9<  
}[@Q**j(  
public static void swap(int[] data, int i, int j) { $II ~tO  
int temp = data; )xz_ }6b]  
data = data[j]; ~h=iZ/g_^_  
data[j] = temp; .EjR<UU  
} @;hdZLG]`&  
} \K%M.>]vq  
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