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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。 KNVu[P)rv  
插入排序: 'C[tPP  
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package org.rut.util.algorithm.support; c#n 2 !  
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import org.rut.util.algorithm.SortUtil; Y sM*d  
/** |b   
* @author treeroot SI}s  
* @since 2006-2-2 E/zf9\  
* @version 1.0 ']M/'CcM  
*/ cM#rus?)+  
public class InsertSort implements SortUtil.Sort{ 2e`}O  
jxog8 E  
/* (non-Javadoc) |toP8 6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yb`PMjj15  
*/ FZHA19Kb  
public void sort(int[] data) { b,xZY1a  
int temp; Xh9QfT,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w*qj0:i5as  
} =XP[3~  
} ]S6Gz/4aV+  
} ?KC(WaGJQ  
nKx)R^]k  
} Tuln#<:  
[9; @1I<x  
冒泡排序: FdU]!GO- X  
Gw*Tz"  
package org.rut.util.algorithm.support; {&51@UX  
,d#*i  
import org.rut.util.algorithm.SortUtil; 8u[_t.y4m  
WK{`_c U^  
/** 51|ky-  
* @author treeroot ~>u .d  
* @since 2006-2-2 cQU/z"?+  
* @version 1.0 &hOz(825r  
*/ -%asHDQ{  
public class BubbleSort implements SortUtil.Sort{ p* >z:=  
}3(!kW  
/* (non-Javadoc) )Qbd/zd\U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XqTguO'  
*/ y* +y&  
public void sort(int[] data) { KkJqqO"EL  
int temp; 7Uenr9)M  
for(int i=0;i for(int j=data.length-1;j>i;j--){ hG1:E:}  
if(data[j] SortUtil.swap(data,j,j-1); Z vysLHj  
} a|ufm^ F  
} *6Wiq5M>.  
} (V{/8%mWc  
} 8Y($ F2  
eADCT  
} 8w0~2-v.?V  
%8'8XDq^8  
选择排序: tB_le>rhl  
ai !u+L  
package org.rut.util.algorithm.support; }icCp)b>v  
'/d51  
import org.rut.util.algorithm.SortUtil; *;<fh,wOk  
KWJVc `  
/** WTSh#L  
* @author treeroot yaUtDC.|  
* @since 2006-2-2 1NZ"\9=U  
* @version 1.0 F y+NJSG  
*/ z0 "DbZ;d  
public class SelectionSort implements SortUtil.Sort { _7Y h[I4  
GP} ;~  
/* c./\sN@  
* (non-Javadoc) VvhfD2*T  
* iU)I"#\l'k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T ,lM(2S[  
*/ r.C6` a  
public void sort(int[] data) { +3v)@18B1  
int temp; iN;Pg _Kq  
for (int i = 0; i < data.length; i++) { e5L+NPeM6v  
int lowIndex = i; l<=;IMWd  
for (int j = data.length - 1; j > i; j--) { 59E9K)c3  
if (data[j] < data[lowIndex]) { s(,S~  
lowIndex = j; =ZgueUz,  
} iE%"Q? Q/  
} JF=R$!5  
SortUtil.swap(data,i,lowIndex); [|]J8o@u^  
} {[y6qQm  
} $WA wMS,  
IiYL2JS;t|  
} xR+vu>f  
N`8K1{>BH  
Shell排序: 9CD ei~  
@Z5q2Q  
package org.rut.util.algorithm.support; k/K)nH@)  
s QDgNJbU  
import org.rut.util.algorithm.SortUtil; 'HA{6v,y  
#6 M] tr  
/** Y{Z&W9U  
* @author treeroot 8v$q+Wic  
* @since 2006-2-2 E0Wc8m"  
* @version 1.0 T7[@ lMa?  
*/ r%,?uim#  
public class ShellSort implements SortUtil.Sort{ N ,~O+  
{cK<iQJ  
/* (non-Javadoc) Y=S0|!u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5KC Qvv\  
*/  s*u A3}j  
public void sort(int[] data) { yD9enYM  
for(int i=data.length/2;i>2;i/=2){ Liqo)m  
for(int j=0;j insertSort(data,j,i); bt}8ymcG  
} {##G.n\~  
} 9b. kso9.  
insertSort(data,0,1); c`O~I<(Pm  
} {oQs*`=l>  
g)hEzL0k  
/** v\x l?F  
* @param data $>rt0LOF  
* @param j mGT('iTM4  
* @param i Iiy5;:CX:q  
*/ 9{Hs1 MD[  
private void insertSort(int[] data, int start, int inc) { Yh<F-WOo2  
int temp; )nm+_U  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4n,&,R r#  
} K?.~}82c  
} &PMQ]B  
} C5~#lNC  
a&s34Pd  
} !I7$e&Uz@  
ff--y8h  
快速排序: iI GK "}  
Aztrq  
package org.rut.util.algorithm.support; F^dJ{<yX  
2BccE  
import org.rut.util.algorithm.SortUtil; 4.9qB  
d4y#n=HnnV  
/** *i"9D:  
* @author treeroot 5`h 6oFxGp  
* @since 2006-2-2 S_lGr k\j  
* @version 1.0 >X~B1D,SV7  
*/ *yZ6"  
public class QuickSort implements SortUtil.Sort{ \/Y(m4<P  
`YOYC  
/* (non-Javadoc)  5%-{r&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [YvS#M3T  
*/ <\229  
public void sort(int[] data) { )%C.IZ_s2  
quickSort(data,0,data.length-1); 4$-R|@,|_  
} tU4#7b:Y  
private void quickSort(int[] data,int i,int j){ aCZ0-X?c  
int pivotIndex=(i+j)/2; `>"#d ?,  
file://swap V^7.@BeT  
SortUtil.swap(data,pivotIndex,j); PT>b%7Of  
@A[)\E1  
int k=partition(data,i-1,j,data[j]); %. 1/ #{  
SortUtil.swap(data,k,j); v :pT(0N  
if((k-i)>1) quickSort(data,i,k-1); 1}VaBsEV  
if((j-k)>1) quickSort(data,k+1,j); yP"2.9\erH  
>}SEU-7&\  
} GcO2oq  
/** `KQx#c>'  
* @param data jg$qp%7i%  
* @param i 86#l$QaK{  
* @param j LnR>!0:c  
* @return WwmYJl0  
*/ 'm<Lx _i  
private int partition(int[] data, int l, int r,int pivot) { zs=3e~o3  
do{ 0cm34\*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); IMM;LC%rD9  
SortUtil.swap(data,l,r); #|9W9\f,  
} XoN~d  
while(l SortUtil.swap(data,l,r); ZU 3Psj  
return l; <H-Nft>O  
} kpgvAKyx  
QE]'Dc%  
} Ts!'>_<Je  
')xOL =w  
改进后的快速排序: L;V 8c  
I%d=c0>%  
package org.rut.util.algorithm.support; -y.cy'$f  
1l-5H7^w2?  
import org.rut.util.algorithm.SortUtil; -Y_, .'ex  
S,5ok0R  
/** t$BjJ -G  
* @author treeroot x?AG*' h&  
* @since 2006-2-2 yY VR]HH  
* @version 1.0 p]aEC+q  
*/ J3yK^@&&  
public class ImprovedQuickSort implements SortUtil.Sort { e#[Klh$]EW  
5]O{tSj  
private static int MAX_STACK_SIZE=4096; "7cty\  
private static int THRESHOLD=10; B.N#9u-vW  
/* (non-Javadoc) ` o)KG,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7xnj\9$m  
*/ ZTR9e\F  
public void sort(int[] data) { N R c4*zQJ  
int[] stack=new int[MAX_STACK_SIZE]; < $zJi V  
'lIs`Zc5N  
int top=-1; ysnW3q!@  
int pivot; '/O:@P5qY  
int pivotIndex,l,r; MCN>3/81  
' ]k<' `b|  
stack[++top]=0; FJvY`zqB  
stack[++top]=data.length-1; HXq']+iC  
JM7mQ'`Ud  
while(top>0){ ?L<B]!9HZt  
int j=stack[top--]; ~& -h5=3  
int i=stack[top--]; 5RPG3ppS  
B&cIx~+  
pivotIndex=(i+j)/2; 3=enk0$  
pivot=data[pivotIndex]; ;!<}oZp{  
OnTe_JML  
SortUtil.swap(data,pivotIndex,j); 5dj" UxH  
u99a"+  
file://partition Xs2}n^#i  
l=i-1; oSCaP,P  
r=j; Sa g)}6+  
do{ W )FxN,  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~qinCIj  
SortUtil.swap(data,l,r); 9c^,v_W@  
} ~0MpB~ {xd  
while(l SortUtil.swap(data,l,r); =E9\fRGU  
SortUtil.swap(data,l,j); kmC@\xTp  
aAjl 58  
if((l-i)>THRESHOLD){ ;UQza ]i  
stack[++top]=i; `Gio 2gl9  
stack[++top]=l-1; D4VDWv  
} y_m+&Oe  
if((j-l)>THRESHOLD){ aHN"I  
stack[++top]=l+1; 8c5YX  
stack[++top]=j; ]}3s/NJi  
} \_Bj"K  
P j   
} C|ZPnm>f30  
file://new InsertSort().sort(data); RU)(|;  
insertSort(data); wn"}<ka  
}  9q"kM  
/** nCYkUDnZ  
* @param data Ty g>Xv  
*/ <YvXyIs  
private void insertSort(int[] data) { E+]}KX:  
int temp; zu d_BOq{f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Im;%.J  
} ;e?M;-  
} ?[JP[ qS  
} J*;RL`  
nH#>_R (  
} C hF~  
Y-ao yoNS  
归并排序: UGAV"0  
t6"%u3W8M  
package org.rut.util.algorithm.support; C:B7%<  
KlT:&1SB9  
import org.rut.util.algorithm.SortUtil; `nF SJlr&  
7ws<' d7/  
/** a{`hAI${  
* @author treeroot ~HmH#"VP  
* @since 2006-2-2 h%/BZC^L]|  
* @version 1.0 Sgi`&;PF  
*/ D?n6h\h\$%  
public class MergeSort implements SortUtil.Sort{ <K0epED  
?c#s}IH  
/* (non-Javadoc) -Q20af-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1'&.6{)P  
*/ Z|t=t"6"  
public void sort(int[] data) { s+:|b~  
int[] temp=new int[data.length]; n\+ c3  
mergeSort(data,temp,0,data.length-1); afrF%!  
} `;85Mo:qJ  
]$/oSa/  
private void mergeSort(int[] data,int[] temp,int l,int r){ Mq\=pxC@  
int mid=(l+r)/2; hhU_kI  
if(l==r) return ; D7hTn@I  
mergeSort(data,temp,l,mid); .~i|kc]Ue  
mergeSort(data,temp,mid+1,r); Go%Z^pF3CO  
for(int i=l;i<=r;i++){ VM$n|[C~  
temp=data; $yx\2   
} 6ld4'oM  
int i1=l; ">[#Ops-;$  
int i2=mid+1; *D|a`R!Y  
for(int cur=l;cur<=r;cur++){ WZ'Z"'  
if(i1==mid+1) 1Dr&BXvf]8  
data[cur]=temp[i2++]; 7(84j5zb  
else if(i2>r) W\l&wR  
data[cur]=temp[i1++]; <{#_;7h"  
else if(temp[i1] data[cur]=temp[i1++]; QP\9#D~  
else gWr7^u&q@|  
data[cur]=temp[i2++]; 'WW:'[Syn'  
} @} Ig*@  
} cQEUHhRg!  
AX`T ku  
} #QwkRzVoy  
}y6|H,t9  
改进后的归并排序: Y D<3#Dr]  
Tri\5O0lPs  
package org.rut.util.algorithm.support; SA<\n+>q^  
h%EeU 3  
import org.rut.util.algorithm.SortUtil; S70#_{  
[QnN1k  
/** "W(D0oy  
* @author treeroot d]0:r]e  
* @since 2006-2-2 w;,34qbf  
* @version 1.0 <q7o"NI6FZ  
*/ T]\1gs41  
public class ImprovedMergeSort implements SortUtil.Sort { V#Wy` ce  
VukbvBWPN  
private static final int THRESHOLD = 10; cy^=!EfA  
-_ 9k+AV  
/* =F@ +~)_  
* (non-Javadoc) *q6XK_  
* X7$]qE K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t=Oq<r  
*/ xUn"XkhP  
public void sort(int[] data) { mOJdx-q?r  
int[] temp=new int[data.length]; BeUyt  
mergeSort(data,temp,0,data.length-1); `Abd=1nH  
} LGhK)]:  
c 4AJ`f.5  
private void mergeSort(int[] data, int[] temp, int l, int r) { naR<  
int i, j, k; !Q>xVlPVu  
int mid = (l + r) / 2; { { \oC$  
if (l == r) $UzSPhv[  
return; KPToyCyR1  
if ((mid - l) >= THRESHOLD) A}lxJ5h0  
mergeSort(data, temp, l, mid); M@T{uo  
else v-#,@&Uwq  
insertSort(data, l, mid - l + 1); )+L|<6JXA  
if ((r - mid) > THRESHOLD) AGFA;X  
mergeSort(data, temp, mid + 1, r); 54p{J  
else Z'i@;^=A  
insertSort(data, mid + 1, r - mid); +QN4hJK  
$2uC%er"H  
for (i = l; i <= mid; i++) { myj/93p}`b  
temp = data; 20}HTV{v  
} >*EZZ\eU!  
for (j = 1; j <= r - mid; j++) { $q\"d?n  
temp[r - j + 1] = data[j + mid]; {<{VJGY7T  
} 8-<F4^i_i  
int a = temp[l]; S})f`X9_}  
int b = temp[r]; '#c#.O  
for (i = l, j = r, k = l; k <= r; k++) { J'2 Yrn  
if (a < b) { |Y Lja87  
data[k] = temp[i++]; wS=vm}}u  
a = temp; fnX[R2KZ  
} else { fd4gB6>  
data[k] = temp[j--]; B :%Vq2`  
b = temp[j]; 43k'96[2d  
} 5$ik|e^:y  
} u4hn9**a1  
} o%'1=d3R1Q  
YXp\C"~g  
/** vN(~}gOd\  
* @param data G/JGb2I/7|  
* @param l N5K(yY_T  
* @param i -L/%2 X  
*/ N)mZ!K44  
private void insertSort(int[] data, int start, int len) { ?pIELezfK  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -Y524   
} }aOqoi7w  
} 8Ay7I  
} \HB fM&  
} F%V|Aa  
pJFn 8&!J  
堆排序: `!cdxKLR  
#;8)UNc)}  
package org.rut.util.algorithm.support; Y%/RGYKh  
4 Y=0>FlY0  
import org.rut.util.algorithm.SortUtil; V<5. 4{[G  
C rR/  
/** $*eYiz3Ue  
* @author treeroot [C EV&B  
* @since 2006-2-2 "3VX9{'%@  
* @version 1.0 N&G'i.w/  
*/ D zD5n  
public class HeapSort implements SortUtil.Sort{ .iV=ybMT  
B!mHO*g  
/* (non-Javadoc) 3PkZXeH/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fYuSfB+<  
*/ !y$##PZ  
public void sort(int[] data) { oU )(/  
MaxHeap h=new MaxHeap(); K\ Wzh;  
h.init(data); g#i~^4-1  
for(int i=0;i h.remove(); 3chx 4  
System.arraycopy(h.queue,1,data,0,data.length); WzFXF{(  
} z#!<[**&  
Aq(cgTNW  
private static class MaxHeap{ I'IFBVhaYn  
GDCp@%xW  
void init(int[] data){ 6)sKg{H  
this.queue=new int[data.length+1]; tC'#dU`=qY  
for(int i=0;i queue[++size]=data; rL\}>VC)  
fixUp(size); Rng-o!   
} HIw)HYF 2  
} |-6`S1.  
8G)~#;x1  
private int size=0; I._ A  
}eSy]r[J  
private int[] queue; dm/3{\ 4  
7W}%ralkg  
public int get() { !Fs$W  
return queue[1]; \X\< +KU  
} s2L]H  
5 v.&|[\k  
public void remove() { A'CD,R+gR  
SortUtil.swap(queue,1,size--); 3]1 ! g6  
fixDown(1); '?$@hqQn  
} mKtMI!FR  
file://fixdown U;3t{~Ym  
private void fixDown(int k) { h];H]15&  
int j; 9Pg6,[*u  
while ((j = k << 1) <= size) { ,62~u'hR5  
if (j < size %26amp;%26amp; queue[j] j++; e,#w* |  
if (queue[k]>queue[j]) file://不用交换 T7i>aM$+  
break; "3jTU  
SortUtil.swap(queue,j,k); Ngx2N<$<*g  
k = j; %H?B5y  
} f'ld6jt|%  
} *[cCY!+Qy  
private void fixUp(int k) { 4w|t|?  
while (k > 1) { 2wO8;wiA  
int j = k >> 1; Wj3i*x$  
if (queue[j]>queue[k]) [[_>D M  
break; Z[[*:9rY|  
SortUtil.swap(queue,j,k); '9]?jkl  
k = j; DCa[?|Y  
} i5(qJ/u  
} n]vCvmt  
7>im2"zm  
} %_n%-Qn  
?`OF n F,K  
} (ID%U  
-`ljKp  
SortUtil: EyR/   
vg?(0Gasm*  
package org.rut.util.algorithm; 6{d?3Jk  
>4bw4 Z1  
import org.rut.util.algorithm.support.BubbleSort; W`LG.`JW  
import org.rut.util.algorithm.support.HeapSort; \="U|LzG  
import org.rut.util.algorithm.support.ImprovedMergeSort; :BR_%$  
import org.rut.util.algorithm.support.ImprovedQuickSort; r[):'ys,C  
import org.rut.util.algorithm.support.InsertSort; =M:Po0?0E  
import org.rut.util.algorithm.support.MergeSort; fiC0'4.,  
import org.rut.util.algorithm.support.QuickSort; ?v,c)  
import org.rut.util.algorithm.support.SelectionSort; tMdSdJ8  
import org.rut.util.algorithm.support.ShellSort; QpzdlB44l  
<gX({FA  
/** A/9<} m  
* @author treeroot JkR%o #>5  
* @since 2006-2-2 noaR3)  
* @version 1.0 ]~$@x=p2e  
*/ ~:,}?9  
public class SortUtil { _Cf:\Xs m  
public final static int INSERT = 1; nGTGX  
public final static int BUBBLE = 2; Ax|'uvVAPT  
public final static int SELECTION = 3; I`xC0ZUKj  
public final static int SHELL = 4; **-rPonM[  
public final static int QUICK = 5; UazK0{t<f  
public final static int IMPROVED_QUICK = 6; RJ3uu NK7  
public final static int MERGE = 7; 8 |= c3Z  
public final static int IMPROVED_MERGE = 8; )Dms9:  
public final static int HEAP = 9; KiMlbF.~V  
*eD[[HbKX  
public static void sort(int[] data) { l %zbx"%x  
sort(data, IMPROVED_QUICK); nQ'NS  
} sBWyUD  
private static String[] name={ HQF@@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" VxOWv8}|  
}; gs0 jwI  
1Cc91  
private static Sort[] impl=new Sort[]{ /xSJljexz  
new InsertSort(), Q7`)&^ Hx  
new BubbleSort(), @) MG&X  
new SelectionSort(), jB9~'>JY  
new ShellSort(), &B :L9^  
new QuickSort(), Xa-TNnws?  
new ImprovedQuickSort(), u1kCvi#N  
new MergeSort(), *Q2 oc:6  
new ImprovedMergeSort(), _UP 9b@Z"  
new HeapSort() /Xc9}~t6  
}; 1fJ~Wp @1  
vnf2Z,f%  
public static String toString(int algorithm){ w"D1mI!L 7  
return name[algorithm-1]; GGLSmfb)  
} ,| 8aDL?  
e7n0=U0  
public static void sort(int[] data, int algorithm) { lZkJ<*z#  
impl[algorithm-1].sort(data); ?t}s3P!Q3w  
} {{bwmNv"  
:Eh}]_  
public static interface Sort { uZf 6W<a  
public void sort(int[] data); d/+s-g p  
} B<myt79F_[  
67H?xsk@n  
public static void swap(int[] data, int i, int j) { REcKfJTj  
int temp = data; bFG?mG:  
data = data[j]; {[bpvK  
data[j] = temp; n}9<7e~/  
} 9I5AYa?  
} L|D9+u L  
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