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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。 K6BP~@H_D  
插入排序: !:^?GN#~x  
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package org.rut.util.algorithm.support; kM JA#{<  
GxynLXWo>  
import org.rut.util.algorithm.SortUtil; V1]QuQ{&s  
/** Sy0-tK4  
* @author treeroot `|2p1Ei  
* @since 2006-2-2 zKllwIf i  
* @version 1.0 n mN3Z_  
*/ (\zxiK  
public class InsertSort implements SortUtil.Sort{ ^T< HD  
Ug P  
/* (non-Javadoc) P/ XO5`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bd$``(b`v  
*/ j8cXv  
public void sort(int[] data) { t(.jJ>|+*  
int temp; +U^H`\EUr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c|2+J :}p  
} ^VOA69n>$  
} tbm/gOBw  
} YLU.]UC  
*~%QXNn`  
} :|z.F+-/  
* ujJpJZ2  
冒泡排序: ]fdxpqz  
04E S>'@  
package org.rut.util.algorithm.support; 7W]0bJK+E  
VLP'3 qX  
import org.rut.util.algorithm.SortUtil; Sdr,q9+__  
ny'wS  
/** VEG p!~D  
* @author treeroot 7 ~9Lj  
* @since 2006-2-2 pl.x_E,HP  
* @version 1.0 }7+`[g  
*/ $a.,; :  
public class BubbleSort implements SortUtil.Sort{ % s),4  
Id<O/C  
/* (non-Javadoc) {+CBThC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3jzmiS]  
*/ C lWxL#L6~  
public void sort(int[] data) { gnWEsA\!  
int temp; g><i tA?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ xhw0YDGzf  
if(data[j] SortUtil.swap(data,j,j-1); 3cSP1=$*  
} *Me&> "N"  
} Lyy:G9OV  
} Nq >"vEq)  
} DWXHx  
 Uip-qWI  
} ~LU$ no^  
w^=uq3X?  
选择排序: M=t;t0  
l\"wdS}  
package org.rut.util.algorithm.support; ,1e\}^  
/1z3Q_M  
import org.rut.util.algorithm.SortUtil; 0wpGIT!2  
mXK7y.9\  
/** iu.$P-s  
* @author treeroot Zk<Y+!  
* @since 2006-2-2 Cb i;CF\{  
* @version 1.0 k* e $_  
*/ WCL#3uYk"  
public class SelectionSort implements SortUtil.Sort { 0o]T6  
n>L24rL  
/* 3ahbv%y  
* (non-Javadoc) i0g/'ZP  
* ]?*L"()kp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?atHZLF  
*/ F [S'l  
public void sort(int[] data) { n h&[e  
int temp; CSVL,(Uw  
for (int i = 0; i < data.length; i++) { kR]AW60OE  
int lowIndex = i; )tp;2rJ/  
for (int j = data.length - 1; j > i; j--) { 3\Tqs  
if (data[j] < data[lowIndex]) { {D`_q|  
lowIndex = j; iNG =x   
} J}Ji /  
} R d|M)  
SortUtil.swap(data,i,lowIndex); 7Rl/F1G o}  
} nPg,(8Tt  
} Tr$37suF  
3hPp1wZd   
} -Zfq:Kr  
~aL&,0  
Shell排序: +T8]R7b9  
?O.'_YS  
package org.rut.util.algorithm.support; 01">$  
Gr|IM,5P4  
import org.rut.util.algorithm.SortUtil; 8!|LJI  
LLU]KZhtY|  
/** z *~rd2  
* @author treeroot HbMD5(  
* @since 2006-2-2 ( yv)zg9  
* @version 1.0 <uXQT$@?  
*/ @s8wYcW  
public class ShellSort implements SortUtil.Sort{ @ev8"JZ1  
aFd87'^  
/* (non-Javadoc) ~n{lu'SIX2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6e4A| <  
*/ TFYp=xK(  
public void sort(int[] data) { VmP5`):?b  
for(int i=data.length/2;i>2;i/=2){ gI{56Z  
for(int j=0;j insertSort(data,j,i); Ur,{ZGm  
} "Ax#x  
} ofy)}/i  
insertSort(data,0,1); wY{!gQ  
} w|( ix;pK  
'~n=<Y  
/** 8ps1Q2|  
* @param data _[{oK G^u  
* @param j Ch7&9NW  
* @param i ds:&{~7L<T  
*/ LR% P\~  
private void insertSort(int[] data, int start, int inc) { mt]50}eK  
int temp; ?(E?oJ)(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); EE,C@d!*k7  
} m=qyPY  
} d'!abnF[d  
} %R@&8  
H5/w!y@  
} C sx EN4  
NUM+tg>KM  
快速排序: ;s!GpO7+  
#/o1D^  
package org.rut.util.algorithm.support; |v@ zyOq&b  
Dfw%Bu  
import org.rut.util.algorithm.SortUtil; }ZkGH}K_}  
7f\/cS^  
/** Q'c[yu  
* @author treeroot 5Tiap8x+<  
* @since 2006-2-2 0khAi|PY  
* @version 1.0 KYC<*1k  
*/ >+F +"NAN  
public class QuickSort implements SortUtil.Sort{ 9ve)+Lk  
b0h>q$b  
/* (non-Javadoc) F:'>zB]-}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R:Tv'I1-L  
*/ j38>5DM6L  
public void sort(int[] data) { !DZ4C.  
quickSort(data,0,data.length-1); T~)zgu%q_  
} Pw/$ }Q9X  
private void quickSort(int[] data,int i,int j){ yPT\9"/  
int pivotIndex=(i+j)/2; mJa8;X!r6  
file://swap *#c^.4$'  
SortUtil.swap(data,pivotIndex,j); cW?~]E'<  
Qo])A6$IU  
int k=partition(data,i-1,j,data[j]); '$Fu3%ft  
SortUtil.swap(data,k,j); )!g@MHHL  
if((k-i)>1) quickSort(data,i,k-1); s,]z6L0  
if((j-k)>1) quickSort(data,k+1,j); +9]CGYj  
r)Fd3)e   
} A1/[3Bz  
/** /9(8ML#E  
* @param data 2hFOwI  
* @param i 4S*7*ak{  
* @param j <c]?  
* @return 7YQ689"J6B  
*/ 8rM1kOCf  
private int partition(int[] data, int l, int r,int pivot) { '[Z.\   
do{ Rq,Fp/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); dZ"d`M>o6  
SortUtil.swap(data,l,r); Rkh ^|_<!  
} $X]Z-RCK3  
while(l SortUtil.swap(data,l,r); R*>EbOuI  
return l; 7&*d]#&~j  
} k*o>ZpjNH  
2br~Vn0N  
} 7 ^n{BsN  
z[*Y%o8-r  
改进后的快速排序: 1j\wvPLr  
=8 01nZJ  
package org.rut.util.algorithm.support; S\W&{+3  
c*Q6k<SKR  
import org.rut.util.algorithm.SortUtil; 3?-2~s3gp  
SS"Z>talw  
/** h f9yK6  
* @author treeroot N3o kN8d  
* @since 2006-2-2 W;ADc2#)  
* @version 1.0 %\?Gzc_  
*/  q a}=p  
public class ImprovedQuickSort implements SortUtil.Sort { pb}4{]sI  
&1M#;rE;D#  
private static int MAX_STACK_SIZE=4096; }W$}blbp  
private static int THRESHOLD=10; [eZ'h8  
/* (non-Javadoc) q\T}jF\t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &T[BS;  
*/ 9Lqo^+0)\  
public void sort(int[] data) { D[bPm:\0M  
int[] stack=new int[MAX_STACK_SIZE]; ~Pi CA  
K])| V  
int top=-1; 0uO<7IW9  
int pivot; ky0,#ZOF  
int pivotIndex,l,r; of>}fJ_p  
*kKdL  
stack[++top]=0; jWJ/gv~ $  
stack[++top]=data.length-1; XYHVw)  
<G#z;]N  
while(top>0){ V|G[j\]E<  
int j=stack[top--]; m`H9^w%W  
int i=stack[top--]; QliP9-im3  
-KU@0G  
pivotIndex=(i+j)/2; Ps9YP B-  
pivot=data[pivotIndex];  Wkc^?0p  
VO+3@d:  
SortUtil.swap(data,pivotIndex,j); hSfLNvK  
jS'hs>Ot  
file://partition hv 8j$2m  
l=i-1; P<s:dH"  
r=j; V9<CeTl'  
do{ .}DL%E`n  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); HK!Vd_&9,  
SortUtil.swap(data,l,r); }*R.>jQ+Y  
} ~7"6Y ]  
while(l SortUtil.swap(data,l,r); ~#V1Gunq  
SortUtil.swap(data,l,j); ts~$'^K[-  
iMXK_O%  
if((l-i)>THRESHOLD){ SM8m\c  
stack[++top]=i; IX y  $  
stack[++top]=l-1; qD/FxR-!  
} a@U0s+V&a0  
if((j-l)>THRESHOLD){ } P/ x@N  
stack[++top]=l+1; "Go)t + -  
stack[++top]=j; R22P ol  
} U&<w{cuA  
}doJ= lc  
} ?ne!LDlE|  
file://new InsertSort().sort(data); wO3K2I]>0  
insertSort(data); Mv^G%zg2  
} ?jRyw(Q  
/** V0'_PR@;  
* @param data ZeY kZzN  
*/ sKuPV  
private void insertSort(int[] data) { }^ G&n';J  
int temp; ufWd) Q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }%I)bU  
} H-Z1i  
} qvhol  
} RXU#.=xvy  
6 &)fZt  
} Hxzdxwz%$  
9dXtugp|  
归并排序: a?QDf5C q  
Il9pL~u  
package org.rut.util.algorithm.support; O`W&`B(*k  
13:0%IO  
import org.rut.util.algorithm.SortUtil; 1F_ 1bAh$  
B)`^/^7  
/** :i_k A'dl&  
* @author treeroot mQ]wLPP{1  
* @since 2006-2-2 L?( % *  
* @version 1.0 k 1   
*/ IRW%*W#  
public class MergeSort implements SortUtil.Sort{ jboQ)NxT!,  
K;_.WzWD=  
/* (non-Javadoc) Obm@2;^g6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,0R2k `m!  
*/ W!G2$e6  
public void sort(int[] data) { pr(16P  
int[] temp=new int[data.length]; $6]7>:8mz  
mergeSort(data,temp,0,data.length-1); N}2xt)JZz  
} <r{ )*]#l  
RU^lR8;  
private void mergeSort(int[] data,int[] temp,int l,int r){ !.ot&EbE  
int mid=(l+r)/2; 3e.v'ccK&  
if(l==r) return ; Kzd`|+?'`M  
mergeSort(data,temp,l,mid); `X7ns?  
mergeSort(data,temp,mid+1,r); M1f ^Lx  
for(int i=l;i<=r;i++){ X@ Gm:6  
temp=data; I=3e@aTZ,  
} ;qF#!Kb5  
int i1=l; "nK(+Z  
int i2=mid+1; &JpFt^IHi  
for(int cur=l;cur<=r;cur++){ wbaXRvg  
if(i1==mid+1) De*Z UN|<  
data[cur]=temp[i2++]; n|oAfJUk,  
else if(i2>r) ToHCS/J59  
data[cur]=temp[i1++]; wGC)gW  
else if(temp[i1] data[cur]=temp[i1++]; kFG>Km(y}  
else hp E?  
data[cur]=temp[i2++]; S6sw)  
} \KaWR  
} Q(2X$7iRq  
{m/\AG)1I  
} hL,+wJ+A  
D~xU r )E  
改进后的归并排序: M7(vI4V  
0Up@+R2  
package org.rut.util.algorithm.support; %q@eCN  
2\z"6  
import org.rut.util.algorithm.SortUtil; C||A[JOS  
G'<J8;B* t  
/** *eO@<j?  
* @author treeroot &!{wbm@  
* @since 2006-2-2 ~OXC6z  
* @version 1.0 U$`)|/8  
*/ >_biiW~x:  
public class ImprovedMergeSort implements SortUtil.Sort { qK4E:dD  
 |Aw(v6  
private static final int THRESHOLD = 10; h !~u9  
O]n"aAu@  
/* }Vpr7_  
* (non-Javadoc) xi=qap=S^9  
* O\ T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *Bt`6u.>e,  
*/ /AR;O4X+  
public void sort(int[] data) {  kQ$Q}3f  
int[] temp=new int[data.length]; :ji_dQ8k  
mergeSort(data,temp,0,data.length-1);  8IH&=3  
} OjCT*qyU<  
byv(:xk|'e  
private void mergeSort(int[] data, int[] temp, int l, int r) { HlB'yOHv!  
int i, j, k; D4m2*%M  
int mid = (l + r) / 2; X?b]5?K;r  
if (l == r) Tv0|e'^  
return; z+1#p.F$@  
if ((mid - l) >= THRESHOLD) 9BGPq)#  
mergeSort(data, temp, l, mid); Jr18faEZw  
else .e2u)YqA  
insertSort(data, l, mid - l + 1); (9BjZ&ej  
if ((r - mid) > THRESHOLD) ?J+[|*'yK  
mergeSort(data, temp, mid + 1, r); ~u&3Ki*x  
else 0*%j6*XDq9  
insertSort(data, mid + 1, r - mid); 3R?7&oXvH  
5( lE$&   
for (i = l; i <= mid; i++) { 9jiZtwRpk  
temp = data; AjaG .fa]k  
} ,LXuU8sB  
for (j = 1; j <= r - mid; j++) { &tKs t,UR8  
temp[r - j + 1] = data[j + mid]; <}%>a@  
} &j/ WjZPF  
int a = temp[l]; +b] g;  
int b = temp[r]; M"K$81  
for (i = l, j = r, k = l; k <= r; k++) { :eI .E:/'  
if (a < b) { vZC2F  
data[k] = temp[i++]; x!q$`zF\\  
a = temp; ,SJB 3if  
} else { g?M\Z";  
data[k] = temp[j--]; ^"ywltW>  
b = temp[j]; ~fs{Ff'  
} f3-=?Z  
} 9c806>]U^  
} '=x   
S,vrz!'>A  
/** TD,W*(b  
* @param data  :XF;v  
* @param l Wn24eld"x  
* @param i !wvP 24"y  
*/ 'r4 j;Jn  
private void insertSort(int[] data, int start, int len) { q:-8W[_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $qy%Q]  
} [S":~3^B6  
} >E?626*  
} DJrE[wI  
} <!&nyuSz  
PBr-< J  
堆排序: FgRlxz  
YmHn*N}:U  
package org.rut.util.algorithm.support; L1.<LB^4'  
A7-QOqST(  
import org.rut.util.algorithm.SortUtil; !yH&l6s  
@6ZQkX/  
/** VbK| VON[  
* @author treeroot }MrR svN  
* @since 2006-2-2 S'V0c%'QQV  
* @version 1.0 DI**fywu[3  
*/ 9wC q  
public class HeapSort implements SortUtil.Sort{ @y9_\mX!s  
-sGfpLy<6  
/* (non-Javadoc) R#Id"O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a)4.[+wnRf  
*/ bWwc2##7jo  
public void sort(int[] data) { A[;R_  
MaxHeap h=new MaxHeap();  F[115/  
h.init(data); ;hmy7M1%  
for(int i=0;i h.remove(); fT/;TK>z>  
System.arraycopy(h.queue,1,data,0,data.length); 2M= gpy  
} ,/|"0$p2x  
j* g5f  
private static class MaxHeap{ WU{G_Fqaz  
sBq @W4  
void init(int[] data){  {k}S!T  
this.queue=new int[data.length+1]; <"AP&J'H  
for(int i=0;i queue[++size]=data; I 8`@Srw8  
fixUp(size); N4}/n  
} Z|uUE   
} qWtvo';3  
5>"$95D  
private int size=0; [st4FaQ36  
 hPx=3L$  
private int[] queue; : UD<1fh  
sk$MJSE ~  
public int get() { yFshV\   
return queue[1]; 1'R]An BV  
} P$N\o@  
RXb+"/   
public void remove() { %IW=[D6Tg  
SortUtil.swap(queue,1,size--); d"Hh9O}6  
fixDown(1); U8?QyG 2A  
} !V$m!i;  
file://fixdown PE|_V  
private void fixDown(int k) { d>)*!l2,C  
int j; 9EK5#_L[=  
while ((j = k << 1) <= size) { F.?^ko9d  
if (j < size %26amp;%26amp; queue[j] j++; >"{3lDyq-  
if (queue[k]>queue[j]) file://不用交换 @ bPQhn#(g  
break; W'-B)li   
SortUtil.swap(queue,j,k); @.a[2,o_  
k = j; pqBd#  
} d11~ mU\  
} 5K;jW  
private void fixUp(int k) { #<S+E7uTs  
while (k > 1) {  4EJ  
int j = k >> 1; nxKV7d@R  
if (queue[j]>queue[k]) O2q`2L~  
break; .4^Ep\\  
SortUtil.swap(queue,j,k); cc*A/lD  
k = j; 4W*52*'F,  
} TPt<(-}W  
} /^G1wz2  
6OF&Q`*4  
} `!kOyh:X  
CQW#o_\  
} {l%Of  
|gA~E>IqF  
SortUtil: c-z ,}`  
81O`#DfZ  
package org.rut.util.algorithm; 7;) T;X  
'mp@!@_  
import org.rut.util.algorithm.support.BubbleSort; 8Sd<!  
import org.rut.util.algorithm.support.HeapSort; 6FiI\  
import org.rut.util.algorithm.support.ImprovedMergeSort; !0CC&8C`  
import org.rut.util.algorithm.support.ImprovedQuickSort; HbX>::J8  
import org.rut.util.algorithm.support.InsertSort; ^J< I Ia4  
import org.rut.util.algorithm.support.MergeSort; WOrz7x  
import org.rut.util.algorithm.support.QuickSort; )AEJ` xC  
import org.rut.util.algorithm.support.SelectionSort; G?jKm_`L  
import org.rut.util.algorithm.support.ShellSort; <3m_} =\  
M^AwOR7<  
/** 3E$M{l  
* @author treeroot ?]]> WP  
* @since 2006-2-2 Fc M  
* @version 1.0 IC{\iwO/~c  
*/ :$~)i?ge<5  
public class SortUtil { Jajo!X*Wai  
public final static int INSERT = 1; }KEyJj3"DA  
public final static int BUBBLE = 2; b lP@Cn2  
public final static int SELECTION = 3; k(pI5N}pJZ  
public final static int SHELL = 4; X+z!?W*a  
public final static int QUICK = 5; P hs4]!  
public final static int IMPROVED_QUICK = 6; &q^\*<B.^  
public final static int MERGE = 7; @#hd8_)A.  
public final static int IMPROVED_MERGE = 8; 7IB<0  
public final static int HEAP = 9; [fiB!G ]?  
!1$Q Nxgi  
public static void sort(int[] data) { /bv1R5  
sort(data, IMPROVED_QUICK); vxhs1vh  
}  s!X@ l  
private static String[] name={ 0?8O9i  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <^c?M[ j  
}; y[:\kI  
:hr% 6K7  
private static Sort[] impl=new Sort[]{ dl mF?N|EC  
new InsertSort(), y{ %2Q)  
new BubbleSort(), u9ObFm$7  
new SelectionSort(), 0}C> e`<'  
new ShellSort(), [nZf4KN  
new QuickSort(),  S<#>g s4  
new ImprovedQuickSort(), {4J:t_<nKO  
new MergeSort(), Anr''J&9`H  
new ImprovedMergeSort(), 1O]'iS"  
new HeapSort() epuN~T  
}; j*+[=X/  
[-5%[ty9X  
public static String toString(int algorithm){ Sio^FOTD  
return name[algorithm-1]; HX%lL }E  
} xl8=y  
rp^= vfW  
public static void sort(int[] data, int algorithm) { ~~>`WA\G5,  
impl[algorithm-1].sort(data); : 8dQ8p;  
} %Hx8%G!  
]CHO5'%,$  
public static interface Sort { 1BK!<}yI{  
public void sort(int[] data); h+=xG|1R[5  
} v EppkS U1  
-< D7  
public static void swap(int[] data, int i, int j) { yw2Mr+9I  
int temp = data; $c"byQ[3S  
data = data[j]; ]^j:}#R  
data[j] = temp; wX5Yo{  
} 2[!#Xf  
} hEUS&`K  
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