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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。 a"gZw9m@  
插入排序: lt\. )Y>4  
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package org.rut.util.algorithm.support; z97RNT|Y7U  
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import org.rut.util.algorithm.SortUtil; %fB]N  
/** ^$-ID6  
* @author treeroot 9?$Qk0jc  
* @since 2006-2-2 3oX\q/$  
* @version 1.0 NuZiLtC  
*/ X6I"&yct  
public class InsertSort implements SortUtil.Sort{ "NR`{1f:O  
cKt=_4Lf  
/* (non-Javadoc) Fd!Np7xw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D4nYyj1O3  
*/ qKu/~0a/  
public void sort(int[] data) { JB.f7-  
int temp; SPfz/ q{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m{T:<:q~  
} ,MH/lQq%  
} JmL{&  
} *HiN:30DZ  
wq$+m (  
} ?:DeOBAb  
KQGdV{VFs  
冒泡排序: BZHba8c(  
)5n*4A  
package org.rut.util.algorithm.support; V0 70oZ  
yOHVL~F  
import org.rut.util.algorithm.SortUtil; s6=jHrdvv  
GH ] c  
/** [t #xX59  
* @author treeroot 8NCu;s  
* @since 2006-2-2 !R@v\Eu  
* @version 1.0 (55k70>i3  
*/ G)~/$EF,_  
public class BubbleSort implements SortUtil.Sort{ a`/\0~  
>Pa&f20Hp  
/* (non-Javadoc) IZ?+c@t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j{QzD^t  
*/ miWog8j  
public void sort(int[] data) { {v CB$@/o  
int temp; ;1x(~pD*o  
for(int i=0;i for(int j=data.length-1;j>i;j--){ v+\&8)W=  
if(data[j] SortUtil.swap(data,j,j-1); Cn6<I{`\  
} R^u 1(SF  
} O7DaVlln  
} n{'LF #4l  
} vH14%&OcN  
);*:Uz sC_  
} :Y4 m3|  
JTg:3<L  
选择排序: z{;~$."  
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package org.rut.util.algorithm.support; oUSv)G.zb  
l-/fFy)T  
import org.rut.util.algorithm.SortUtil; R3 Zg,YM  
3Lg)237&j  
/** 4^*+G]]wZ~  
* @author treeroot B Oc2<M/\  
* @since 2006-2-2 /i:c!l9  
* @version 1.0 C[X2]zr  
*/ M%{,?a0V  
public class SelectionSort implements SortUtil.Sort { /[V}   
nC6 ;:uM  
/* wlC7;u  
* (non-Javadoc) 8&q[jxI@8  
* <PMQ$s>KK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fX:=_c   
*/ Pi/V3D) B  
public void sort(int[] data) { kH4xP3. i  
int temp; W=-:<3XL  
for (int i = 0; i < data.length; i++) { WR :I2-1  
int lowIndex = i;  =&8Cg  
for (int j = data.length - 1; j > i; j--) { )#%v1rR  
if (data[j] < data[lowIndex]) {  yxx9h3  
lowIndex = j; |[+/ ]Y  
} NC @L,)F  
} ^uCZO  
SortUtil.swap(data,i,lowIndex); -d+o\qp"#  
} d U}kimz  
} I9VU,8~  
7cMHzh k^  
} m7 $t$/g  
Gf<f#.5y ,  
Shell排序: eVRPjVzQ'Q  
9_Ws8nE  
package org.rut.util.algorithm.support; ,S V34+(  
FTJvkcc?m  
import org.rut.util.algorithm.SortUtil; UI]UxEJ  
?GT,Y5  
/** b f j]Q  
* @author treeroot q+ZN$4m  
* @since 2006-2-2 OyG#  
* @version 1.0 *4 HogC  
*/ n.l7V<1  
public class ShellSort implements SortUtil.Sort{ G4<M@ET  
S4O'N x  
/* (non-Javadoc) fUKi@*^ZUa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oVAY}q|wU  
*/ :iEIo7B  
public void sort(int[] data) { R!z32 <5k  
for(int i=data.length/2;i>2;i/=2){ `fM]3]x>  
for(int j=0;j insertSort(data,j,i); E7`Q =4@e  
} KAI/*G\z  
} @h E7F}  
insertSort(data,0,1); Ge_Gx*R  
} 4 Q<c I2|  
%=*nJvYS  
/** *]K/8MbiF  
* @param data o=)["V  
* @param j Dkyw3*LCn%  
* @param i ;N?raz2mEi  
*/ @3v[L<S{  
private void insertSort(int[] data, int start, int inc) { sZh| <2  
int temp; D/oO@;`'c  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !;%+1j?d  
} #+ai G52+  
} /RBIZ_  
} +@mgb4_  
*|*6 q/  
} aH'=k?Of;  
8#h~J>u.  
快速排序: HceZTe@  
iF^    
package org.rut.util.algorithm.support; 4?',E ddo  
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import org.rut.util.algorithm.SortUtil; ~{00moN"m  
d`sIgll&n  
/** kE[Hq-J=N  
* @author treeroot AAc*\K  
* @since 2006-2-2 XCyAt;neon  
* @version 1.0 f+V^q4  
*/ /oC@:7  
public class QuickSort implements SortUtil.Sort{ P ~rTuj  
L43]0k  
/* (non-Javadoc) `)n/J+g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p%#=OtkC  
*/ ZxoAf;U~  
public void sort(int[] data) { AYHefAF<w  
quickSort(data,0,data.length-1); J`'wprSBb  
} h=o%\F4  
private void quickSort(int[] data,int i,int j){ #q9cjEd_7  
int pivotIndex=(i+j)/2; Mh"vH0\Lj  
file://swap XtftG7r9S  
SortUtil.swap(data,pivotIndex,j); >k9W+mk  
5J2tR6u-(  
int k=partition(data,i-1,j,data[j]); fqm-?vy}  
SortUtil.swap(data,k,j); *5z"Xy3J  
if((k-i)>1) quickSort(data,i,k-1); K06x7W  
if((j-k)>1) quickSort(data,k+1,j); As+^6  
*}RV)0mif  
} ?656P=b)  
/** /D,<2>o  
* @param data Z"N}f ,  
* @param i jn._4TQ*}  
* @param j (Y~gItej  
* @return FB }8  
*/ `7 3I}%?  
private int partition(int[] data, int l, int r,int pivot) { JrGY`6##p  
do{ hOR1R B  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xY@<<  
SortUtil.swap(data,l,r); E6+ 6  
}  I#U)  
while(l SortUtil.swap(data,l,r); 7R#$Hm  
return l; $^5c8wT  
} bOdQ+Y6  
HSlAm&Y\  
} I;UCKoFT  
L8~zQV$h  
改进后的快速排序: b@ OF  
PwS7!dzH-  
package org.rut.util.algorithm.support; ve*m\DU  
& d@N3y  
import org.rut.util.algorithm.SortUtil; O)D+u@RhH  
@,;VMO  
/** KvNw'3Ua  
* @author treeroot gV;9lpZ2  
* @since 2006-2-2 H|s,;1#  
* @version 1.0 v@Bk)Z  
*/ +P|Z1a -jB  
public class ImprovedQuickSort implements SortUtil.Sort { KA{ JSi  
u iR[V~  
private static int MAX_STACK_SIZE=4096; R=<uf:ca  
private static int THRESHOLD=10; _Eus7  
/* (non-Javadoc) ^-g-]?q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bq"dKN`  
*/  ;GZ/V;S  
public void sort(int[] data) { Z3N^)j8  
int[] stack=new int[MAX_STACK_SIZE]; C7_nA:Rc  
?vg|;Q  
int top=-1; Wq"^{  
int pivot; ,A;wLI  
int pivotIndex,l,r; VL8yL`~zc.  
*x@.$=NF"  
stack[++top]=0; XpT+xv1`;  
stack[++top]=data.length-1; R@lA5w  
j!/=w q  
while(top>0){ ;bYLQ  
int j=stack[top--]; a=AP*adx8  
int i=stack[top--]; lJ(] ;/%  
P|rreSv*  
pivotIndex=(i+j)/2; *B%ulsm  
pivot=data[pivotIndex]; IZ&FNOSZ+4  
v 0D@`C  
SortUtil.swap(data,pivotIndex,j); 0'O6-1Li  
U@"f(YL+"  
file://partition r(p@{L185  
l=i-1; I0v4TjHH  
r=j; VPUm4%?p$  
do{ FV5~sy  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2i~zAD'  
SortUtil.swap(data,l,r); N&]_U%#Q  
} +J  <<me4  
while(l SortUtil.swap(data,l,r); 4C`p`AQqpQ  
SortUtil.swap(data,l,j); DNGj81'c  
x?n13C  
if((l-i)>THRESHOLD){ KpfQ=~'  
stack[++top]=i; "q3W& @  
stack[++top]=l-1; @9\L|O'~?  
} #s0Wx47~  
if((j-l)>THRESHOLD){ cOb ,Md  
stack[++top]=l+1; `c/mmS  
stack[++top]=j; fB`7f $[  
} o>@9[F,h+  
U%l<48@8  
} RZTC+ylj  
file://new InsertSort().sort(data); %]fi;Z  
insertSort(data); r 9whW;"q  
} 9 $ Ud\   
/** d5l].%~  
* @param data lj"72   
*/ k*!f@ M  
private void insertSort(int[] data) { SoNT12>  
int temp; z~\Y*\f^Y3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {]3Rk  
} ^u$?& #  
} ]=jpqxlx  
} &0JCZ /e  
6w*q~{"(  
} n--w-1  
`Uy4>?  
归并排序: M:cW/&ZJ  
,&0iFUwN_  
package org.rut.util.algorithm.support; Or"+d 5  
Usf7 AS=  
import org.rut.util.algorithm.SortUtil; w/Y6m.i1  
@{o3NR_  
/** W'f)W4D$6  
* @author treeroot i3U_G^8  
* @since 2006-2-2 Ztj~Q9mu  
* @version 1.0 Z=[?T f  
*/ xOBzT&  
public class MergeSort implements SortUtil.Sort{ TY]-L1$  
*S] K@g  
/* (non-Javadoc) N)o/}@]6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qZ rv2dT  
*/ .Uh|V -  
public void sort(int[] data) { /rZ`e'}  
int[] temp=new int[data.length]; 92 =huV  
mergeSort(data,temp,0,data.length-1); (cdtUE8  
} taqmtXU=(  
Jpr`E&%I6  
private void mergeSort(int[] data,int[] temp,int l,int r){ "t:9jU  
int mid=(l+r)/2; } TsND6Ws3  
if(l==r) return ; Is#w=s}2  
mergeSort(data,temp,l,mid); ;}QM#5Xdt  
mergeSort(data,temp,mid+1,r); ZmzYJ$:6  
for(int i=l;i<=r;i++){ 2t 1u{  
temp=data; UwVc!Lys  
} W~2T/~M  
int i1=l; CyV(+KBe_  
int i2=mid+1;   7)  
for(int cur=l;cur<=r;cur++){ -/gAb<=  
if(i1==mid+1) 6*%E4#4  
data[cur]=temp[i2++]; vz}_^8O  
else if(i2>r) P"ATqQG%D  
data[cur]=temp[i1++]; l_0/g^(  
else if(temp[i1] data[cur]=temp[i1++]; _p,1m[&M  
else Oj0,Urs7  
data[cur]=temp[i2++]; m1,yf*U  
} T;Zv^:]0  
} )&wJ_ (z  
*?s"~ XVs  
} 0)nY- f0  
xI,7ld~  
改进后的归并排序: t+%tN^87:  
5M mSQ_  
package org.rut.util.algorithm.support; dBM> ;S;v  
`cn}}1Lg]  
import org.rut.util.algorithm.SortUtil; i[rXs/]  
Lk:Sju  
/** v&}^8j  
* @author treeroot ,<,#zG[.  
* @since 2006-2-2 Yb=Z `)  
* @version 1.0 .jvRUD8A7  
*/ m5\/7 VC  
public class ImprovedMergeSort implements SortUtil.Sort { :+$/B N:iO  
EViQB.3w\  
private static final int THRESHOLD = 10; >cRE$d?  
GK8x<Aq%z  
/* >do3*ko A  
* (non-Javadoc) ZD t|g^  
* o}VW%G"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ct\n1T }  
*/ O.^1r  
public void sort(int[] data) { NI33lp$V  
int[] temp=new int[data.length]; VVVw\|JB>  
mergeSort(data,temp,0,data.length-1); P DtLJt$  
} {j4J(dtO  
ebmU~6v k  
private void mergeSort(int[] data, int[] temp, int l, int r) { E !}~j  
int i, j, k; o%V%@q H  
int mid = (l + r) / 2; {*Tnl-m~  
if (l == r) C|H/x\?zRv  
return; *7:HO{P>Y  
if ((mid - l) >= THRESHOLD) j/*4Wj[  
mergeSort(data, temp, l, mid); Q=T/hb  
else CZ.XEMN\  
insertSort(data, l, mid - l + 1); &I=F4 z  
if ((r - mid) > THRESHOLD) m* JbZT  
mergeSort(data, temp, mid + 1, r); 'Nn>W5#))  
else YDo Vm?  
insertSort(data, mid + 1, r - mid); U?sio%`(  
JtGBNz!"  
for (i = l; i <= mid; i++) { 6O# xV:Uc<  
temp = data; qGH\3g-  
} )7TuV"  
for (j = 1; j <= r - mid; j++) { \o2cztl=  
temp[r - j + 1] = data[j + mid];  :bBMy\(u  
} SXx;- Ws  
int a = temp[l]; 3Z-N*bhC  
int b = temp[r]; $S_G:}tna  
for (i = l, j = r, k = l; k <= r; k++) { "Z70 jkW[  
if (a < b) { c>pbRUMH  
data[k] = temp[i++]; W^Z#_{  
a = temp; @A;Ouu(  
} else { Hb|y`Ok  
data[k] = temp[j--]; t,>j{SK~  
b = temp[j]; 'awZ-$#  
} |JRaskd  
} /By`FW Y  
} dp'xd>m  
R7j'XU  
/** }!n90 9 L  
* @param data /\C5`>x  
* @param l ? > 7SZiC`  
* @param i oNK-^N?-T  
*/ B`1"4[{  
private void insertSort(int[] data, int start, int len) { `-QY<STTP9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y4Fuh nb>  
} [yf&]0  
} g?=|kp  
} %}x$YD O  
} =V(|3?N  
v#WD$9QWs  
堆排序: PShluhY  
cc_v4d{x  
package org.rut.util.algorithm.support; NwB;9ZhZ  
U9:w^t[Pp  
import org.rut.util.algorithm.SortUtil; syR +;  
 #:st>V_h  
/** Y,;$RV@g  
* @author treeroot #k*P/I~  
* @since 2006-2-2 xY,W[?3CY  
* @version 1.0 x;L.j7lzA;  
*/ R;2q=%  
public class HeapSort implements SortUtil.Sort{ /ig'p53jL  
1j":j%9M  
/* (non-Javadoc) oGa8#>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w +~,Mv\  
*/ |r%lJmBB  
public void sort(int[] data) { =n7 3bm  
MaxHeap h=new MaxHeap(); @CUYl*.PD  
h.init(data); m+a\NXWR?N  
for(int i=0;i h.remove(); ceUhCb  
System.arraycopy(h.queue,1,data,0,data.length); qk *b,`;  
} l2*o@&.  
' O+)[D  
private static class MaxHeap{ DTMoZm  
F*['1eAmdY  
void init(int[] data){ 11g_!X -g@  
this.queue=new int[data.length+1]; ~ubcD6f  
for(int i=0;i queue[++size]=data; DmA~Vj!a^y  
fixUp(size); N+9W2n  
} ?s-Z3{k  
} 5{Oq* |  
wR%F>[ 6.{  
private int size=0; DCheG7lo{  
wxc24y  
private int[] queue; ;]PP +h  
v(`9+*  
public int get() { 1Uaj}= @M  
return queue[1]; 5@-[[ $dk  
} >3qfo2K 0  
csd~)a nb  
public void remove() { GD -cP5$  
SortUtil.swap(queue,1,size--); Zn{Y+ce7d  
fixDown(1); {u (( y D  
} @r*w 84  
file://fixdown 8-u #<D.  
private void fixDown(int k) { @km@\w  
int j; Klj -dz  
while ((j = k << 1) <= size) { uf/4vz,  
if (j < size %26amp;%26amp; queue[j] j++; 2CY4nS KW  
if (queue[k]>queue[j]) file://不用交换 &~K4I  
break; M?ObK#l!_  
SortUtil.swap(queue,j,k); ]5',`~jkF  
k = j; 8fSY@  
} =MjkD)l  
} v1VH&~e  
private void fixUp(int k) { %nV6#pr  
while (k > 1) { 1$#1  
int j = k >> 1; AeR*79x  
if (queue[j]>queue[k]) O\+b1+&b3Y  
break; 53<.Knw5a  
SortUtil.swap(queue,j,k); p&$O}AX|  
k = j; /_[?i"GW  
} w\zNn4B})A  
} *w OU=1+  
hCPyCq]  
} R KXhD PA  
)_a;xB` S(  
} `Iqh\oY8-  
''?iJFR  
SortUtil: ^:u-wr8?{  
:LxsiDrF[  
package org.rut.util.algorithm; EpCF/i?9:  
P\ia ?9  
import org.rut.util.algorithm.support.BubbleSort; j_{f(.5  
import org.rut.util.algorithm.support.HeapSort; qHl>d*IZ  
import org.rut.util.algorithm.support.ImprovedMergeSort; r]=Z :  
import org.rut.util.algorithm.support.ImprovedQuickSort; =oT4!OUf  
import org.rut.util.algorithm.support.InsertSort; &hcD/*_Z  
import org.rut.util.algorithm.support.MergeSort; ;Qi0j<dXd  
import org.rut.util.algorithm.support.QuickSort; <  UD90}  
import org.rut.util.algorithm.support.SelectionSort; re)7h$f}  
import org.rut.util.algorithm.support.ShellSort; E"zC6iYZ;  
k!"6mo@rd  
/** \#!B*:u  
* @author treeroot U62Z ?nge%  
* @since 2006-2-2 {HtW`r1)Tt  
* @version 1.0 4Ifz-t/  
*/ .x'?&7#(  
public class SortUtil { h7kn >q;  
public final static int INSERT = 1; Vj[hT~{f  
public final static int BUBBLE = 2; 'm TQ=1  
public final static int SELECTION = 3; _-|+k  
public final static int SHELL = 4; vyvb-oz;u  
public final static int QUICK = 5; p5aqlYb6r  
public final static int IMPROVED_QUICK = 6; GDQQ4-|O  
public final static int MERGE = 7; ) W/_2Q.  
public final static int IMPROVED_MERGE = 8; Gzc`5n{"  
public final static int HEAP = 9; (_3QZ  
UB,0c)   
public static void sort(int[] data) { gE9x+g  
sort(data, IMPROVED_QUICK); m(w9s;<  
} vc C"  
private static String[] name={ 69S*\'L  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0[f[6mm%m  
}; 5c0$oyl)M  
5VSc5*[  
private static Sort[] impl=new Sort[]{ rpUTn!*u/  
new InsertSort(), .aQ8I1~  
new BubbleSort(), .#}A/V.-Y  
new SelectionSort(), CI1K:K AM  
new ShellSort(), _`lPLBr6  
new QuickSort(), TF?~vS%@P  
new ImprovedQuickSort(), ~NTKWRaR  
new MergeSort(), zm mkmTp  
new ImprovedMergeSort(), }ag;yf;  
new HeapSort() fRjp(m  
}; AO,^v+ $  
vty:@?3\  
public static String toString(int algorithm){ .cz7jD  
return name[algorithm-1]; wUfm)Q#  
} B9wQ;[gQB  
@D$ogU,#  
public static void sort(int[] data, int algorithm) { ?_d3|]N  
impl[algorithm-1].sort(data); hd W7Qck"  
} AquO#A[,#  
tB`IBuy9!"  
public static interface Sort { i_:#][nWX  
public void sort(int[] data); K7t_Q8  
} aF[#(PF  
Sq x'nXgO  
public static void swap(int[] data, int i, int j) { Te`MIR  
int temp = data; NNMn,J  
data = data[j]; #~4;yY\$I  
data[j] = temp; Myf2"\}  
} a4 mRu|x  
} q ,+29  
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