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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。 q |^O  
插入排序: ZAH<!@qh  
8W[]#~77b  
package org.rut.util.algorithm.support; fDqXM;a"  
bg*{1^  
import org.rut.util.algorithm.SortUtil; KJ)&(Yx  
/** Z%{f[|h9}  
* @author treeroot %UJ4wm  
* @since 2006-2-2 f,a %@WT  
* @version 1.0 X[~CLKH(  
*/ LG|,g3&  
public class InsertSort implements SortUtil.Sort{ ^aW[~ c  
KRZV9AJ  
/* (non-Javadoc) M<srJ8|'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kZ9pgdI  
*/ &Kp+8D*  
public void sort(int[] data) { DS2$w9!  
int temp; EG.C2]Fi  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); KxwLKaImI  
} UVJ(iNK"  
} 9p4U\hx  
} P.B'Gh#^  
fdG.=7`  
} (FYJ^o  
(d#Z-w-  
冒泡排序: z0[ZO1Fo(  
Y%l3SB,5L  
package org.rut.util.algorithm.support; :a@z53X@M  
_[o^23Hj  
import org.rut.util.algorithm.SortUtil; OF/)-}!  
?|GxVOl  
/** gu[dw3L  
* @author treeroot "%t`I)  
* @since 2006-2-2 Q$L(fH kw  
* @version 1.0  0QqzS  
*/ ]!aa#?Fc  
public class BubbleSort implements SortUtil.Sort{ A_~5|  
)"uG*}\?b  
/* (non-Javadoc) ha! "BR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3og$'#6P  
*/ X$iJ|=vW  
public void sort(int[] data) { AuipK*&g  
int temp; c@7hLUaE2  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S{T d/1}  
if(data[j] SortUtil.swap(data,j,j-1); lkg*AAR?'  
}  ca*[n~np  
} cCGXB|9fYR  
} ;OU>AnWr(&  
} X6GkJ R  
*/y]!<\v!k  
} 0DVZRB  
cievC,3*  
选择排序: 'Sy *'&  
#x@lZ!Y  
package org.rut.util.algorithm.support; S/<"RfVU#o  
,]_(-tyN|  
import org.rut.util.algorithm.SortUtil; q,+kPhHEgy  
T) tZU?  
/** s[2ZxCrCw  
* @author treeroot @@3,+7%1  
* @since 2006-2-2 i(yAmo9h  
* @version 1.0 Wo9psv7.  
*/ vd7N&c9  
public class SelectionSort implements SortUtil.Sort { s7nX\:Bw:  
tWSvxGCzn%  
/* 27E9NO=  
* (non-Javadoc) ~K-*q{6Q  
* 4!~ .6cp3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ryba[Fz4Di  
*/ IgVo%)n  
public void sort(int[] data) { j H.Ju|nO  
int temp; C nSX  
for (int i = 0; i < data.length; i++) { "4ozlWx  
int lowIndex = i; 5u|=;Hz*)  
for (int j = data.length - 1; j > i; j--) { 7XVzd]jH  
if (data[j] < data[lowIndex]) { ^/C $L8#  
lowIndex = j; BnaU)E h  
} &H4uvJ_<  
} OVUs]uK  
SortUtil.swap(data,i,lowIndex); -M:hlwha  
} 5Hwo)S]r  
} kUg+I_j6*  
5&<d2EG6l'  
} uqa4&2(I=j  
O| 1f^_S/  
Shell排序: 6i]Nr@1C  
jKj=#O  
package org.rut.util.algorithm.support; ;;YcuzQI3  
?{"XrQw  
import org.rut.util.algorithm.SortUtil; xz"Z3B  
lHcZi  
/** "B9[cDM&  
* @author treeroot Jm %ynW  
* @since 2006-2-2 \m=-8KpU  
* @version 1.0 oI_oz0nHk  
*/ h"u<E\g  
public class ShellSort implements SortUtil.Sort{ y8w0eq94  
qukjS#>+  
/* (non-Javadoc) 9u ?)vR[@e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =de<WoKnu2  
*/ %XJQ0CE<(  
public void sort(int[] data) { c$Xe.:QY  
for(int i=data.length/2;i>2;i/=2){ DO&+=o`"  
for(int j=0;j insertSort(data,j,i); YVB% kKv{  
} ]{IR&{EI-  
} \}$*}gW[}  
insertSort(data,0,1); xdd:yrC   
} b:P\=k]8#  
"_K}rI6(t  
/** L!;^ #g  
* @param data @72x`&|I?u  
* @param j 2#z=z d  
* @param i Ro'jM0(KE  
*/ g!1I21M1~  
private void insertSort(int[] data, int start, int inc) { 29"mE;j  
int temp; 5oz>1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0jR){G9+  
} `nT?6gy  
} $brKl8P  
} CE~r4  
`FUFK/7 w\  
} UhsO\9}qH  
q}>M& *  
快速排序: /@&(P#h  
3PsxOb+  
package org.rut.util.algorithm.support; 6 -]>]Hr-  
VR "u*  
import org.rut.util.algorithm.SortUtil; saatU;V  
hzaU8kb  
/** RNGO~:k?r  
* @author treeroot :I2H&,JT  
* @since 2006-2-2 1|W2s\  
* @version 1.0 GF&_~48GD  
*/ Jf2e<?`  
public class QuickSort implements SortUtil.Sort{ [!W5}=^H  
ZQ|5W6c  
/* (non-Javadoc) c8T/4hU MN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SGt5~T xj  
*/ M3ZOk<O<R  
public void sort(int[] data) { {Jrf/p9w  
quickSort(data,0,data.length-1); '}_=kp'X  
} 4iwf\#  
private void quickSort(int[] data,int i,int j){ G(3;;F7"  
int pivotIndex=(i+j)/2; d [r-k 2  
file://swap C ck#Y  
SortUtil.swap(data,pivotIndex,j); Hj2<ZL  
x.ba|:5  
int k=partition(data,i-1,j,data[j]); 6.[)`iF+#  
SortUtil.swap(data,k,j); ^;+[8:Kb  
if((k-i)>1) quickSort(data,i,k-1); d,UCH  
if((j-k)>1) quickSort(data,k+1,j); [P{a_(  
8&%Cy'TIz4  
} "e@n:N!  
/** })P O7:  
* @param data :<H8'4>  
* @param i 19p8B&  
* @param j wqP2Gw7jh6  
* @return ;,k=<]  
*/ Fwb5u!_,  
private int partition(int[] data, int l, int r,int pivot) { Hs$'0:  
do{ E~qQai=]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .%IslLZ  
SortUtil.swap(data,l,r); ~ ltg  
} h,t:]  
while(l SortUtil.swap(data,l,r); J#''q"rZ  
return l; { D+Ym%n  
} l[oe*aYN7  
b1xpz1  
} ;}K62LSR  
Plfdr~$  
改进后的快速排序: 6Hk="$6K  
>I^9:Q  
package org.rut.util.algorithm.support; s7l23*Czl  
g5Hr7K m  
import org.rut.util.algorithm.SortUtil; xzr<k Sp  
epkD*7  
/** H O*YBL  
* @author treeroot JhP\u3 QE  
* @since 2006-2-2 )c+k_;t'+  
* @version 1.0 pawl|Z'Ez  
*/ ,EI:gLH  
public class ImprovedQuickSort implements SortUtil.Sort { kAo.C Nj7  
y3JMbl[S0  
private static int MAX_STACK_SIZE=4096; RgZOt[!.  
private static int THRESHOLD=10; \k; n20\u  
/* (non-Javadoc) e;h,V(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .T8K-<R  
*/ )R &,'`\  
public void sort(int[] data) { |##GIIv;i  
int[] stack=new int[MAX_STACK_SIZE]; w7 *V^B  
~=cmM  
int top=-1; '!Wvqs  
int pivot; R5(T([w'  
int pivotIndex,l,r; :c=.D;,  
-[heV|$;  
stack[++top]=0; %\6Q .V#s  
stack[++top]=data.length-1; +~35G:&:  
t)a;/scT  
while(top>0){ !Z|($21W  
int j=stack[top--]; 6Hf,6>  
int i=stack[top--]; zk}{ dG^M:  
fYX<d%?7  
pivotIndex=(i+j)/2; yWb4Ify  
pivot=data[pivotIndex]; H=~9CJ+tc  
>5ChcefH  
SortUtil.swap(data,pivotIndex,j); 8ObeiVXf)  
ea9oakF  
file://partition J ^ G  
l=i-1; S v`qB'e2  
r=j; 6q/ ?-Qcy  
do{ ."6[:MF  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 'EhBRU%  
SortUtil.swap(data,l,r); /aqEJGG>  
} `I;F$`\  
while(l SortUtil.swap(data,l,r); #wR;|pN  
SortUtil.swap(data,l,j); C9~~O~7x  
L%\b'fs  
if((l-i)>THRESHOLD){ #&8rcu;/  
stack[++top]=i; D E/:['  
stack[++top]=l-1; 4. qtp`  
} Wf26  
if((j-l)>THRESHOLD){ QlZ@ To  
stack[++top]=l+1; )"<8K}%!  
stack[++top]=j; zfI}Q}p  
} 3$/ 4wH^  
lB;FUck9  
} n"D ?I  
file://new InsertSort().sort(data); #JW+~FU`  
insertSort(data); 3iX?~  
} 9Kv|>#zff  
/** rofNZ;nu  
* @param data x3G:(YfO  
*/ >SmV74[s2  
private void insertSort(int[] data) { AC- )BM';  
int temp; _^ |2}t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,<Kx{+ [h  
} j?i#L}.I  
} oF&l-DHp  
}  #ToK$8  
<i. a pBH  
} V!/:53  
Ctu?o+^;z  
归并排序: j;~%lg=)  
?&+9WJ<M  
package org.rut.util.algorithm.support; M[]A2'fS  
2umv|]n+l|  
import org.rut.util.algorithm.SortUtil; \,G#<>S  
Tl("IhkC  
/** OjE` 1h\  
* @author treeroot 3`.P'Fh(k  
* @since 2006-2-2 :D:DnVZ-[@  
* @version 1.0 2[yBD-":  
*/ }FqA ppr  
public class MergeSort implements SortUtil.Sort{ ))h6~1`  
Q;/a F`  
/* (non-Javadoc)  >]D4Q<TY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UK[v6".^h  
*/ [1G^/K"  
public void sort(int[] data) {  k+ o|0  
int[] temp=new int[data.length]; mh/n.*E7  
mergeSort(data,temp,0,data.length-1); .p` pG3  
} 2h=%K/hhY  
^ZRYRA  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]2SI!Ai7  
int mid=(l+r)/2; E>jh"|f:{  
if(l==r) return ; (]2H7X:b  
mergeSort(data,temp,l,mid); ,T,:-E  
mergeSort(data,temp,mid+1,r); i^`9syD  
for(int i=l;i<=r;i++){ a6xj\w  
temp=data; [I*! lbt  
} iI1n2>V3y  
int i1=l; #s-iy+/1oN  
int i2=mid+1; uzOYVN$t  
for(int cur=l;cur<=r;cur++){ RBKOM$7  
if(i1==mid+1) xb2?lL]  
data[cur]=temp[i2++]; ~EiH-z4U  
else if(i2>r) (?)7)5H  
data[cur]=temp[i1++]; U\@A _ B  
else if(temp[i1] data[cur]=temp[i1++]; Wzq>JNn y  
else }=](p-]5  
data[cur]=temp[i2++]; alMYk  
} Yf_6PGNzX  
} w&h 2y4  
:;;E<74e i  
} =JLh?Wx  
1 k8x%5p  
改进后的归并排序: !v|ISyK  
{BBw$m,o  
package org.rut.util.algorithm.support; W[bmzvJ_X  
V)M1YZV{  
import org.rut.util.algorithm.SortUtil; #U7_a{cn"M  
's?Ai2=#  
/** FVsj;  
* @author treeroot pcS+o  
* @since 2006-2-2 }l0&a!C  
* @version 1.0  P\m7 -  
*/ y7\"[<E`(V  
public class ImprovedMergeSort implements SortUtil.Sort { nt1CTWKM8^  
bKVj[r8D~  
private static final int THRESHOLD = 10; K<sC F[  
hn)a@  
/* yTM3^R(  
* (non-Javadoc) P,pnga3Wu  
* 7k%T<;V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [dX`K`k  
*/ yqOuX>m1c  
public void sort(int[] data) { 7^TV~E#  
int[] temp=new int[data.length]; f&@BKx  
mergeSort(data,temp,0,data.length-1); a~LC+8|JW  
} E:E4ulak  
 4-Z()F  
private void mergeSort(int[] data, int[] temp, int l, int r) { Btt]R  
int i, j, k; er.L7  
int mid = (l + r) / 2; x<i}_@Sn_+  
if (l == r) gIEl.  
return; zzGYiF ?  
if ((mid - l) >= THRESHOLD) \kam cA  
mergeSort(data, temp, l, mid); `D5HC  
else X~.f7Ao[  
insertSort(data, l, mid - l + 1); ~`#-d ^s:  
if ((r - mid) > THRESHOLD) .S\&L-{  
mergeSort(data, temp, mid + 1, r); Oeya%C5'  
else d^ ZMS~\*  
insertSort(data, mid + 1, r - mid); ^t "iX9  
S*)1|~pRvQ  
for (i = l; i <= mid; i++) { RuW!*LI  
temp = data; 'Yy&G\S  
} ) iQ   
for (j = 1; j <= r - mid; j++) { gieJ}Bv  
temp[r - j + 1] = data[j + mid]; M&Y .;  
} ~=r^3nZR/J  
int a = temp[l]; Y]`.InG@  
int b = temp[r]; he3SR @\T  
for (i = l, j = r, k = l; k <= r; k++) { Z^KA  
if (a < b) { $.St ej1  
data[k] = temp[i++]; eEc4bVQa  
a = temp; uUR~&8ERX  
} else { 2h30\/xkU  
data[k] = temp[j--]; Jc4L5*Xn/  
b = temp[j]; XV>JD/K2  
} l?E a#  
} 7[v%GoE  
} {2'm^0Kl  
n7LfQWc  
/** Si}HX!s  
* @param data I{0 k  
* @param l [(LV  
* @param i )QKf7 [:  
*/ -#`c5y}P  
private void insertSort(int[] data, int start, int len) { Nw J:!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -l+P8:fL~  
} kW=z+  
} 5R MS(  
} 2R-A@UE2  
} ihL/n  
TrVWv  
堆排序: =x#FbvV  
6V9doP]i  
package org.rut.util.algorithm.support; Weoj|0|t  
^o?SM^  
import org.rut.util.algorithm.SortUtil; dHnR_.  
k ^'f[|}  
/** _S0+;9fhY  
* @author treeroot z:Sigo_z[  
* @since 2006-2-2 {aKqXL[UP  
* @version 1.0 `XTh1Z\  
*/  /RZR}  
public class HeapSort implements SortUtil.Sort{ B=L&bx  
v'2[[u{7*  
/* (non-Javadoc) FaTa(3$%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ! {,F~i9  
*/ 3{% LS"c  
public void sort(int[] data) { Y>."3*^  
MaxHeap h=new MaxHeap(); w^k;D,h  
h.init(data); `i~ Y Fr  
for(int i=0;i h.remove(); UUo;`rkT  
System.arraycopy(h.queue,1,data,0,data.length); 0Y=![tO8  
} FX <b:#  
IHfzZHy  
private static class MaxHeap{ MjfFf} @  
Z[!d*O%R_  
void init(int[] data){ T70QJ=,  
this.queue=new int[data.length+1]; %WG9 dYdS  
for(int i=0;i queue[++size]=data; $$Vt7"F  
fixUp(size); ~Aad9yyi  
} 9&%fq)gS  
} /T^ JS  
Hk_y/97OO  
private int size=0; nq} Q  
y]..= z_ql  
private int[] queue; 7DW]JK l  
p_*M:P1Ma4  
public int get() { f"#m=_Xm  
return queue[1]; M/PFPJ >`  
} p5=|Y^g !  
qJ!Z~-hS  
public void remove() { \ A1uhHP!  
SortUtil.swap(queue,1,size--); iq#b#PYA  
fixDown(1); '[|+aJ  
} Z0!5d<  
file://fixdown Zd^6ulx  
private void fixDown(int k) { Eh</? Qv\  
int j; A$0H .F>  
while ((j = k << 1) <= size) { -W{DxN1  
if (j < size %26amp;%26amp; queue[j] j++; F+ <Z<q  
if (queue[k]>queue[j]) file://不用交换 "eWk#/  
break; WS-dS6Q}  
SortUtil.swap(queue,j,k); p?[Tm*r  
k = j; `J<*9dq%  
} 5 hj  
} N/YWby=H  
private void fixUp(int k) { Jk|Q`h  
while (k > 1) { e:E0"<  
int j = k >> 1; "]'?a$\ky:  
if (queue[j]>queue[k]) ~0$NJrUy  
break; q>f<u&  
SortUtil.swap(queue,j,k); exh/CK4;  
k = j; .LVQx  
} rD?L  
} T J^u"j-'  
I&?Qq k  
} ;Mm7n12z C  
D.D$#O_n.S  
} \y6OUM2y  
#Lsnr.80  
SortUtil: sb:d>6  
dca ;'$  
package org.rut.util.algorithm; GWsE;  
{l_{T4xToB  
import org.rut.util.algorithm.support.BubbleSort; Yw5'6NU  
import org.rut.util.algorithm.support.HeapSort; ~pa!w?/bQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; kK 8itO  
import org.rut.util.algorithm.support.ImprovedQuickSort; A[G0 .>Wk  
import org.rut.util.algorithm.support.InsertSort; yJuQ8+vgR}  
import org.rut.util.algorithm.support.MergeSort; tH=P6vY  
import org.rut.util.algorithm.support.QuickSort; b[z]CP  
import org.rut.util.algorithm.support.SelectionSort; }:: S 0l  
import org.rut.util.algorithm.support.ShellSort; PcB_oG g  
F4=}}k U  
/** xI ,2LGO  
* @author treeroot sGvIXD  
* @since 2006-2-2 pEECHk  
* @version 1.0 r&-m=Kk$  
*/ ,mRyQS'F  
public class SortUtil { }QZQ3@  
public final static int INSERT = 1; zf3v5Hk  
public final static int BUBBLE = 2; 9nu3+.&P  
public final static int SELECTION = 3; IwGqf.!.>  
public final static int SHELL = 4; **69rN  
public final static int QUICK = 5; TW !&p"Us+  
public final static int IMPROVED_QUICK = 6; !lo/xQ<  
public final static int MERGE = 7; MX@IHc  
public final static int IMPROVED_MERGE = 8; ^ 9!!;)  
public final static int HEAP = 9; $d?.2Kg  
9@Cv5L?p\  
public static void sort(int[] data) { tabT0  
sort(data, IMPROVED_QUICK); 5zON}"EC  
} X.`~>`8  
private static String[] name={ fM^[7;]7e  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "RIZV  
}; `6+"Z=:  
+iOKbc'  
private static Sort[] impl=new Sort[]{ VK@!lJ u!  
new InsertSort(), 0527Wj  
new BubbleSort(), "`N-*;*W  
new SelectionSort(), KZPEG!-5  
new ShellSort(), $1ndKB8)`J  
new QuickSort(), }1IpON  
new ImprovedQuickSort(), uslQ*7S[^  
new MergeSort(), 4tY ss  
new ImprovedMergeSort(), HaIM#R32T  
new HeapSort() ,AT[@  
}; \TU3rk&X  
[z 7bixN  
public static String toString(int algorithm){ >LDhU%bH  
return name[algorithm-1]; b+Br=Fv"T  
} _UuC,Pl3  
s.8{5jVG  
public static void sort(int[] data, int algorithm) { w6j/ Dq!  
impl[algorithm-1].sort(data); 4*$G & TX  
} _YRE (YZ/  
{T].]7Z  
public static interface Sort { + nF'a(  
public void sort(int[] data); AlJ} >u  
} Q|@4bzi)  
3do)Vg4  
public static void swap(int[] data, int i, int j) { }V\N16f  
int temp = data; ({o'd=nO  
data = data[j]; 1@$Ko5  
data[j] = temp; )m. 4i=X  
} qgrg CJ  
} m4*@o?Ow  
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