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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。 KK?R|1VK9  
插入排序: %O9P|04]3  
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package org.rut.util.algorithm.support; I6i qC"BK  
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import org.rut.util.algorithm.SortUtil; !{F\ \D/  
/** W 'PW;.,  
* @author treeroot =j%ORD[  
* @since 2006-2-2 O[8wF86R  
* @version 1.0 FI@kE19  
*/ -I:L6ft8  
public class InsertSort implements SortUtil.Sort{ 6?'; ip  
pmiC|F83!8  
/* (non-Javadoc) <u  ImZC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZEB,Q~  
*/ &8dj*!4H  
public void sort(int[] data) { B A i ^t  
int temp; J u"/#@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [U,hb1Wi3  
} s( :N>K5*  
} ll ^I ;o0  
} a|ZJzuqo  
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} D1V^DbUm_  
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冒泡排序: sWq@E6,I  
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package org.rut.util.algorithm.support;  [33=+C a  
#[]B: n6  
import org.rut.util.algorithm.SortUtil; K8uqLSP '  
6RfS_  
/** _6`H `zept  
* @author treeroot +.a->SZ5"  
* @since 2006-2-2 :n OCs  
* @version 1.0 g6h=Q3@  
*/ Yq:+.UU  
public class BubbleSort implements SortUtil.Sort{ l]L"Ex{  
7WHq'R{@  
/* (non-Javadoc) !]MGIh#u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &S[>*+}{+  
*/ (Bss%\  
public void sort(int[] data) { +;a\ gF^  
int temp; au+ a7~0~  
for(int i=0;i for(int j=data.length-1;j>i;j--){ lT8^BT  
if(data[j] SortUtil.swap(data,j,j-1); /BrbP7  
} ;It1i`!R  
} L,3%}_  
} ,Qt2?  
} 2 U3WH.o  
IIAm"=*  
} -yMD9b  
t?FPmbj v  
选择排序: ,o\~d ?4  
$*7AG  
package org.rut.util.algorithm.support; -l <[CI  
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import org.rut.util.algorithm.SortUtil; }q)dXFL=I#  
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/** {;={ abj  
* @author treeroot 85{@&T  
* @since 2006-2-2 5r^u7k  
* @version 1.0 2SYV2  
*/ Cp]q>lM"  
public class SelectionSort implements SortUtil.Sort { G C@U['  
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/* npcL<$<6X  
* (non-Javadoc) `o%Ua0x2  
* Px`z$~*B:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) > M4QEv  
*/ e9eBD   
public void sort(int[] data) { ;h4w<OqcM  
int temp; |E FbT>  
for (int i = 0; i < data.length; i++) { @|}=W Q  
int lowIndex = i; `7_s@4:  
for (int j = data.length - 1; j > i; j--) { GTW5f  
if (data[j] < data[lowIndex]) { lsOZ%p%fV  
lowIndex = j; {&h=  
} @qB1:==@7  
} AA K}t6  
SortUtil.swap(data,i,lowIndex); #+;0=6+SM  
} 0{>P^z  
} $,jynRk7q  
l_ycB%2e^  
} [4HOWM>\  
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Shell排序: yV5AVM o  
L)_L#]Yy  
package org.rut.util.algorithm.support; BoXGoFn  
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import org.rut.util.algorithm.SortUtil; ^qPS&G  
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/** rY(^6[!  
* @author treeroot \E,Fe:/g  
* @since 2006-2-2 #}zL?s^G  
* @version 1.0 {pEbi)CF,}  
*/ K[i|OZWu  
public class ShellSort implements SortUtil.Sort{ nNcmL/(  
u/4|Akui  
/* (non-Javadoc) zbP#y~[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~[ x}  
*/ !S[7IBk%  
public void sort(int[] data) { g/x\#W  
for(int i=data.length/2;i>2;i/=2){ G 4 C 7  
for(int j=0;j insertSort(data,j,i); EXT_x q  
} +#g?rCz  
} fQ~YBFhlr  
insertSort(data,0,1); 4vf,RjB-5  
} !e:HE/&>i  
WAp#[mW.fx  
/** *M()z.N  
* @param data b+mh9q'5E  
* @param j AME6Zu3Y  
* @param i Js!V,={iX  
*/ RLX?3u&  
private void insertSort(int[] data, int start, int inc) { W\<p`xHk  
int temp; u6BLhyS  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); wQ/FJoB  
} }\_[+@*EJ  
} 06vxsT@  
} }&Jml%F4uR  
1R"ymWg"  
} H He~OxWg  
@|J+ f5O  
快速排序: DmgWIede|:  
OcGHMGdn  
package org.rut.util.algorithm.support; w1P8p>vA1  
U/bQ(,3}  
import org.rut.util.algorithm.SortUtil; _sp/RU,J-3  
Gv zw=~8  
/** '}T6e1#JV  
* @author treeroot $NhKqA`0  
* @since 2006-2-2 ;&G8e* bM2  
* @version 1.0 Kly`V]XE  
*/ &d^u$Y5  
public class QuickSort implements SortUtil.Sort{ m8njP-CZ  
W]DZ'  
/* (non-Javadoc) fF} NPl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aqAWaO  
*/ 8k`rj;  
public void sort(int[] data) { N>4uqFo  
quickSort(data,0,data.length-1); vd'd@T  
} edD"jq)J  
private void quickSort(int[] data,int i,int j){ VC@{cVT  
int pivotIndex=(i+j)/2; Xm}~u?$3  
file://swap CJu3h&Rp  
SortUtil.swap(data,pivotIndex,j); 2u|} gZts  
|,Xrt8O/[  
int k=partition(data,i-1,j,data[j]); _o-D},f*e  
SortUtil.swap(data,k,j); _oJq32  
if((k-i)>1) quickSort(data,i,k-1); *R^ulp[W  
if((j-k)>1) quickSort(data,k+1,j); B!cg)Y?.bd  
-(fvb  
} QR;E>eEq  
/** 'Nbae-pf  
* @param data X#*|_(^  
* @param i ;n,@[v  
* @param j ;Y>cegG\  
* @return RZeU{u<O  
*/ , 1{)B  
private int partition(int[] data, int l, int r,int pivot) {  uM9[  
do{ jTJ]: EN  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z;#Ei.7p|  
SortUtil.swap(data,l,r); -6KGQc}U  
} :LwNOuavN  
while(l SortUtil.swap(data,l,r); h[0,/`qb{  
return l; GKNH{|B$D  
} l[q%1-N  
U ExK|t  
} dM1)wkbET  
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改进后的快速排序: /Ma"a ^  
;h"?h*}m!\  
package org.rut.util.algorithm.support; ,HFoy-Yq  
duKR;5:  
import org.rut.util.algorithm.SortUtil; YkKq}DXj  
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/** "38ya2*  
* @author treeroot HV??B :  
* @since 2006-2-2 `%x6;Ha  
* @version 1.0 ;hOrLy&O  
*/ \=yx~c_$L  
public class ImprovedQuickSort implements SortUtil.Sort { \HB4ikl  
;O2r+n  
private static int MAX_STACK_SIZE=4096; /M-%]sayj  
private static int THRESHOLD=10; Jyx6{O j  
/* (non-Javadoc) / ` 7p'i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;@@1$mzK  
*/ yH8 N8  
public void sort(int[] data) { : qKxm(  
int[] stack=new int[MAX_STACK_SIZE]; qxsK-8KT<  
z6K"}C%  
int top=-1; $#dPM*E  
int pivot; E:N~c'k  
int pivotIndex,l,r; +FWkhmTv  
Gv!* Qk4  
stack[++top]=0; ~$N%UQn?b#  
stack[++top]=data.length-1; / W}Za&]  
0.+"K}  
while(top>0){ uOqWMRsoi  
int j=stack[top--]; !S[8w9q  
int i=stack[top--]; tIgKnKr^)  
#KonVM(`  
pivotIndex=(i+j)/2; f.`noZN  
pivot=data[pivotIndex]; T6|zT}cb  
O7shY4Sr  
SortUtil.swap(data,pivotIndex,j); {@u;F2?  
_-*Lj;^V  
file://partition V=}b>Jo2j  
l=i-1; L_.BcRy  
r=j; 9IKFrCO9,  
do{ aZYa<28?L%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); dE*n!@  
SortUtil.swap(data,l,r); =>Vo|LBoe  
} )POuH*j  
while(l SortUtil.swap(data,l,r); r[zxb0YA  
SortUtil.swap(data,l,j); 1FS Jqad  
\k1psqw^O  
if((l-i)>THRESHOLD){ 6=kA  
stack[++top]=i; D 5]sf>~  
stack[++top]=l-1; 8VJUaL@  
} xV'\2n=1T  
if((j-l)>THRESHOLD){ vMXS%Q  
stack[++top]=l+1; }Lx?RU+@=  
stack[++top]=j; ;%Jw9G\h  
} |\ j'Z0  
+k'5W1e  
} ) =<,$|g  
file://new InsertSort().sort(data); &UUIiQm~  
insertSort(data); CUT D]:\  
} F7`3,SzHp  
/** #;Y JR9VN  
* @param data :0.Z/s -  
*/ adh=Kp e!w  
private void insertSort(int[] data) { u0^: XwZ!  
int temp; |~bl%g8xP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pq6}q($Rk  
} tm~V+t!mj  
} DD\:glo  
} I_J;/!l=  
]l>)Di#*o  
} 8/f ,B:by  
2*-s3 >VK  
归并排序: T^8t<S@`  
udDhJ?  
package org.rut.util.algorithm.support; nsqs*$  
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import org.rut.util.algorithm.SortUtil; f0fN1  
'H2TwSbIXI  
/** Ql> DS~a  
* @author treeroot bR@ e6.<i  
* @since 2006-2-2 .Y!*6I  
* @version 1.0 ^WP`;e  
*/ FFl[[(`%D  
public class MergeSort implements SortUtil.Sort{ _|xO4{X  
"P=OpFV  
/* (non-Javadoc) + ?n81|7`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Crmxsw.W^Y  
*/ l;: L0(('  
public void sort(int[] data) { , gk49z9  
int[] temp=new int[data.length]; 7_taqcj  
mergeSort(data,temp,0,data.length-1); !Ac<A.  
} U(DK~#}  
8*3<Erv  
private void mergeSort(int[] data,int[] temp,int l,int r){ l [?o du4  
int mid=(l+r)/2; ]:JoGGE a0  
if(l==r) return ; PD12gUU?  
mergeSort(data,temp,l,mid); ~AxA ,  
mergeSort(data,temp,mid+1,r); gvO}u2.:  
for(int i=l;i<=r;i++){ 9@ 6y(#s  
temp=data; )_OKw?Zi  
} z%;b-PpS  
int i1=l; bE.,)GY  
int i2=mid+1; NyI0 []z  
for(int cur=l;cur<=r;cur++){ j`A%(()d  
if(i1==mid+1) j^T.7Zv  
data[cur]=temp[i2++]; m UpLD+-j  
else if(i2>r) @ 9D, f  
data[cur]=temp[i1++]; &,2h=H,M  
else if(temp[i1] data[cur]=temp[i1++]; 7jT]J   
else XKB)++Q=  
data[cur]=temp[i2++]; tT87TmNsA  
} D(D:/L8T,  
} Rz1&(_Ps  
D\]gIXg  
} f n )m$\2  
4[|^78  
改进后的归并排序: *SQ hXTn  
AzVON#rj  
package org.rut.util.algorithm.support; kD S  
>S3iP?V7  
import org.rut.util.algorithm.SortUtil; Zf}]sW$H  
s@K)RhTY  
/** C3Q[L}X\  
* @author treeroot *z;4. OX  
* @since 2006-2-2 W}bed],l  
* @version 1.0 Vo<V!G{  
*/ 4bqi&h3  
public class ImprovedMergeSort implements SortUtil.Sort { Juj"cjob  
-l<b|`s=w.  
private static final int THRESHOLD = 10; 7OX5"u!2  
PI(;t9]b  
/* e.jrX;;$!&  
* (non-Javadoc) X[:Hp`_$  
* Enn7p9&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IlJ6&9  
*/ .}S9C]d:a  
public void sort(int[] data) { = ;#?CAa:  
int[] temp=new int[data.length]; DVt;I$  
mergeSort(data,temp,0,data.length-1); SuU,SE'TX  
} n=l>d#}$%T  
.ml24SeC  
private void mergeSort(int[] data, int[] temp, int l, int r) { lN#W  
int i, j, k; 1X2MhV  
int mid = (l + r) / 2; Tz3 L#0:j  
if (l == r) 7N,E%$QL  
return; B)g7MG  
if ((mid - l) >= THRESHOLD) js)M c*]&  
mergeSort(data, temp, l, mid); %719h>$  
else -jdS8n4  
insertSort(data, l, mid - l + 1); HtB>#`'  
if ((r - mid) > THRESHOLD) 0]=|3-n  
mergeSort(data, temp, mid + 1, r);  -iWt~  
else Ac}+U q  
insertSort(data, mid + 1, r - mid); o<bZ.t  
+<7~yZ[Z8  
for (i = l; i <= mid; i++) { XQ]noaU  
temp = data; &^Q-:Kxs8  
} >%5Ld`c:SD  
for (j = 1; j <= r - mid; j++) { awh<CmcZ  
temp[r - j + 1] = data[j + mid]; 9HrT>{@  
} ;X,|I)  
int a = temp[l]; {J;[ Hf5  
int b = temp[r]; WzZ<ZCHm  
for (i = l, j = r, k = l; k <= r; k++) { @S\!wjl]C  
if (a < b) { Ya{$:90(4  
data[k] = temp[i++]; b HRH2Ss  
a = temp; ,%7>%*nhk  
} else { 2%UzCK  
data[k] = temp[j--]; "C%<R  
b = temp[j]; G(W/.*  
} b{JcV  
}  |`[0U  
} ,Bax0p  
tIfA]pE  
/** ekC 1wN l  
* @param data AL@8v=  
* @param l QG {KEj2V  
* @param i \Fg%V>  
*/ 69ZGdN  
private void insertSort(int[] data, int start, int len) { q ww*  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %0l'Nuz  
} S?ELFq(g  
} 3y?I^ .B  
} 4{4VC"fa  
} cB#5LXbCE  
*P2_l Q=  
堆排序: 3gtQS3$4s  
Kab"r_'  
package org.rut.util.algorithm.support; 6D3hX>K4  
@=JOAo  
import org.rut.util.algorithm.SortUtil; ieuq9ah#  
oS3'q\  
/** 1) 7n (  
* @author treeroot vOIK6-   
* @since 2006-2-2 A) {q 7WI  
* @version 1.0 4.Luy  
*/ -{[5P!  
public class HeapSort implements SortUtil.Sort{ .kKU MyW(  
=hD@hQ i  
/* (non-Javadoc) ramYSX@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N?7MYP  
*/ MYNNeO  
public void sort(int[] data) { VwJ A  
MaxHeap h=new MaxHeap(); DmzK* O{  
h.init(data); mY6d+  
for(int i=0;i h.remove(); -yyim;Nj  
System.arraycopy(h.queue,1,data,0,data.length); cW%QKdTQY0  
} ! R rk  
j#4 Iu&YJ  
private static class MaxHeap{ 5B6twn~[  
tNpBRk(}  
void init(int[] data){ {jdtNtw  
this.queue=new int[data.length+1]; |Z6M?n  
for(int i=0;i queue[++size]=data; ?RW7TWf  
fixUp(size); 2tPW1"M.n  
} %-9?rOr  
} n!Hj4~T0  
M~'4>h}  
private int size=0; I_h u s  
Z[9) hGh  
private int[] queue; _yx~t  
8(d Hn  
public int get() { 0QJ :  
return queue[1]; DpD19)ouy  
} RHO | g0  
rdj_3Utv  
public void remove() { fv@mA--  
SortUtil.swap(queue,1,size--); 3an9Rb V  
fixDown(1); S+wy^x@@  
} YkWv*l  
file://fixdown arVu`pD*n  
private void fixDown(int k) { ki|KtKAu_9  
int j; LAs#g||M  
while ((j = k << 1) <= size) { 287g 5  
if (j < size %26amp;%26amp; queue[j] j++; *LuR <V  
if (queue[k]>queue[j]) file://不用交换 Uk1|y\  
break; v@,n]"  
SortUtil.swap(queue,j,k); }+mIP:T  
k = j; #BPJRNXd  
} eR1SPS1+  
} (U_`Q1Jo  
private void fixUp(int k) { vbA<=V*P  
while (k > 1) { JRgrg &#  
int j = k >> 1; # <?igtUO  
if (queue[j]>queue[k]) OdKfU^  
break; h@kq>no  
SortUtil.swap(queue,j,k); WZ@hP'Zc  
k = j; I1f4u6\*X  
} }xx"  
} ,5*Z<[*  
) wZ;}O  
} L<D<3g|4  
8NF93tqD6  
} 7C;oMh5  
@ra^0  
SortUtil: hw 5NHZ I'  
z:Y Z]   
package org.rut.util.algorithm; ,r5'nDV=d  
,|}}Ml  
import org.rut.util.algorithm.support.BubbleSort; yN@3uYBF  
import org.rut.util.algorithm.support.HeapSort; Yamu"#  
import org.rut.util.algorithm.support.ImprovedMergeSort; ;{L~|q J  
import org.rut.util.algorithm.support.ImprovedQuickSort; <6.aSOS  
import org.rut.util.algorithm.support.InsertSort; 7y?aw`Sw:  
import org.rut.util.algorithm.support.MergeSort; |lDxk[  
import org.rut.util.algorithm.support.QuickSort; b#%$y  
import org.rut.util.algorithm.support.SelectionSort; -s3q(SH  
import org.rut.util.algorithm.support.ShellSort; cy-o@U"s8  
UWXl c  
/** Ei HQ&u*  
* @author treeroot #zf,%IYF  
* @since 2006-2-2 I%|,KWM  
* @version 1.0 nmo<t]  
*/ qkbGM-H%U  
public class SortUtil { zH5pe  
public final static int INSERT = 1; n2V $dF4m  
public final static int BUBBLE = 2; #}p@+rkg2  
public final static int SELECTION = 3; Cg8s9qE?  
public final static int SHELL = 4; n 9>**&5L  
public final static int QUICK = 5; C ^IPddw>  
public final static int IMPROVED_QUICK = 6; W5*Kq^6Pd  
public final static int MERGE = 7; \V(w=   
public final static int IMPROVED_MERGE = 8; ""f'L,`{.  
public final static int HEAP = 9; P:#KBF;a  
:{LNr!I?I  
public static void sort(int[] data) { BQ:hUF3  
sort(data, IMPROVED_QUICK); !qu/m B  
} u<['9U  
private static String[] name={ 7!;H$mxP  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^j!2I&h1  
}; B7QRG0  
f&L3M)T  
private static Sort[] impl=new Sort[]{ RW`j^q,c3  
new InsertSort(), FoQy@GnM5  
new BubbleSort(), h`n) b  
new SelectionSort(), 0f5c#/7C9  
new ShellSort(), %y{'p:  
new QuickSort(), Q2>o+G  
new ImprovedQuickSort(), Nov)'2g7G  
new MergeSort(), Cut7  
new ImprovedMergeSort(), \1He9~6  
new HeapSort() V8hmfV~=]P  
}; F$j?}  
G"F)t(iX  
public static String toString(int algorithm){ g-~]^$  
return name[algorithm-1]; [xdi.6 %  
} |}o6N5)  
cx ~XG  
public static void sort(int[] data, int algorithm) { 8w$q4fg0  
impl[algorithm-1].sort(data); j4:Xel/  
} 60R]Q  
q4T98s2J  
public static interface Sort { 4KX\'K  
public void sort(int[] data); 4aiI&,  
} *e25!#o1  
qKD Nw8>  
public static void swap(int[] data, int i, int j) { ElA(1o|9I  
int temp = data; 9vckQCLM  
data = data[j]; g)1`A 24  
data[j] = temp; sj3[ny;b  
} yBRYEqS+  
} Js<DVe,  
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