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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。 {Eqx'j  
插入排序: p=|S %  
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package org.rut.util.algorithm.support; "EE (O9q  
31QDN0o!~  
import org.rut.util.algorithm.SortUtil; [lu+"V,<LJ  
/** X}ihYM3y/  
* @author treeroot U_Q;WPJ  
* @since 2006-2-2 cxx8I  
* @version 1.0 - Nt8'-  
*/ D<WGau2H  
public class InsertSort implements SortUtil.Sort{ {CFy %  
(Bv~6tj~J  
/* (non-Javadoc) [ /<kPi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <)Y jVGG  
*/ <Ynrw4[)t  
public void sort(int[] data) { ~n(LBA  
int temp; 0r?]b*IEK  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $FZcvo3@*S  
} B$7Cjv  
} y k\/Cf  
} @xk;]H80  
t[AA=  
} |qU~({=b  
43~v1pf{!  
冒泡排序: H.o3d/8:  
<UTO\w%  
package org.rut.util.algorithm.support; Zcg-i:@  
,C:^K`k&  
import org.rut.util.algorithm.SortUtil; J*AYZS-tSE  
v] m`rV8S[  
/** EiyHZ  
* @author treeroot %MEWw  
* @since 2006-2-2 +"|TPKas  
* @version 1.0 <)"i'v $  
*/ D z[ ,;  
public class BubbleSort implements SortUtil.Sort{ Ylgr]?Db*  
j+>N&.zs  
/* (non-Javadoc) .B'ws/%5\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qca=a }  
*/ Pu'NSNT  
public void sort(int[] data) { ;*d?Qe:  
int temp; sLSH`Xy?5  
for(int i=0;i for(int j=data.length-1;j>i;j--){ d ]#`?}  
if(data[j] SortUtil.swap(data,j,j-1); :b!&Xw$  
} 9%m^^OOf  
} :'[ha$  
} st>%U9  
} \tP*Pz  
NceK>:: 56  
} n]>L"D,  
|3hNTH?  
选择排序: Ix~rBD9  
Ds{DVdqA$c  
package org.rut.util.algorithm.support; LCe6](Z  
57_AJT hR  
import org.rut.util.algorithm.SortUtil; 2tQ?=V(Di  
_{GD\Ai_W  
/** 8v=t-GJW  
* @author treeroot +WguWLO"  
* @since 2006-2-2 QT|\TplJt  
* @version 1.0 m';4`Y5-  
*/ *Xn6yL9  
public class SelectionSort implements SortUtil.Sort { H|'n|\{lt  
l7Wdbx5x0  
/* M<SVH_  
* (non-Javadoc) J<&?Hb*|  
* omT^jh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lg{M\ +  
*/ Pjq()\/[Z  
public void sort(int[] data) { L D%SLJ:  
int temp; Pj5:=d8z(  
for (int i = 0; i < data.length; i++) { IBW-[lr7  
int lowIndex = i; `trcYmR=k  
for (int j = data.length - 1; j > i; j--) { 6LqF*$+$`  
if (data[j] < data[lowIndex]) { Hr \vu`p$  
lowIndex = j; :!FGvR6  
} @ *5+ZAF  
} v"<M ~9T)  
SortUtil.swap(data,i,lowIndex); H8m[:K]_H  
} R{6M(!x  
} } V"A;5j`  
OU*skc>  
} 0%yPuY>  
f?(g5o*2  
Shell排序: o?I`n*u"X  
8:Dkf v  
package org.rut.util.algorithm.support; J?1Eh14KZ  
*|gl1S  
import org.rut.util.algorithm.SortUtil; Fu[GQ6{f  
n- 1  
/** P!{J28dj  
* @author treeroot |\)Y,~;P  
* @since 2006-2-2 a|k*A&5u2  
* @version 1.0 JZE<oQ_Jm  
*/ gj&5>brP  
public class ShellSort implements SortUtil.Sort{ shiw;.vR{B  
:*cd$s  
/* (non-Javadoc) 'CRjd~L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) []?*}o5&>T  
*/ 3@1$y`SN  
public void sort(int[] data) { G\(*z4@Gz  
for(int i=data.length/2;i>2;i/=2){ dki3(  
for(int j=0;j insertSort(data,j,i); V|<'o<h8  
} t$lJgj(  
} 3(:?Z-iKe  
insertSort(data,0,1); g+xcKfN{  
} {J/+KK  
7'ws: #pC  
/** OUN"'p%%  
* @param data yvnvIy  
* @param j !P6?nS  
* @param i ;Q[E>j?w=  
*/ ( v$ i  
private void insertSort(int[] data, int start, int inc) { Qz$Wp*  
int temp;  TZdJq  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);  \7e4t  
} KYq<n& s  
} 0;%\L:,O  
} ly@%1  
x6vkd%fCj  
} c]|Tg9AW  
ojVN -*5  
快速排序: Ij9=J1c4  
v7D0E[)~  
package org.rut.util.algorithm.support; VS65SxHA  
}Q-Tw,j  
import org.rut.util.algorithm.SortUtil; c57`mOe/b  
xX8 c>p  
/** v2YU2-X[  
* @author treeroot V2g"5nYT  
* @since 2006-2-2 \\Z?v,XsS  
* @version 1.0 SzG?m]  
*/ 46H@z=5  
public class QuickSort implements SortUtil.Sort{ [lz H%0 V  
}T53y6J#  
/* (non-Javadoc) <d{>[R)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZR8y9mx2"  
*/ V-"#Kf9  
public void sort(int[] data) { aaI5x  
quickSort(data,0,data.length-1); SXV2Y-  
} <irr .O  
private void quickSort(int[] data,int i,int j){ I}awembw g  
int pivotIndex=(i+j)/2; T ^/\Rr  
file://swap "J `#  
SortUtil.swap(data,pivotIndex,j); %mOQIXr1s  
aED73:b  
int k=partition(data,i-1,j,data[j]); ho!qXS  
SortUtil.swap(data,k,j); TnuA uui*  
if((k-i)>1) quickSort(data,i,k-1); EV;"]lC9  
if((j-k)>1) quickSort(data,k+1,j); 52r\Q}v$  
j ~I_by  
} 4UN|`'c  
/** 5{-54mwo  
* @param data &0+Ba[Z ^  
* @param i gGs"i]c  
* @param j V]Uc@7S/  
* @return 9rM#w"E?<  
*/ _# &_`bZH  
private int partition(int[] data, int l, int r,int pivot) { %xC}#RDf  
do{ 6f+@@=Xc  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !)`m mr  
SortUtil.swap(data,l,r); hl,x|.f}4Y  
} HLqDI lL  
while(l SortUtil.swap(data,l,r); lEw!H^O4  
return l; SN$3cg]z  
} ,5x9o"N!  
yEVnG` 1  
} p;mV?B?oAQ  
xzf/W+.>.  
改进后的快速排序: ~e5E%bXxC  
O1oh,~W  
package org.rut.util.algorithm.support; 41+@!`z7  
Yv[<c!\   
import org.rut.util.algorithm.SortUtil; w4RtIDW:  
= jTC+0u  
/** .la_u8A]  
* @author treeroot .RbPO#(  
* @since 2006-2-2 ;r XZ?"  
* @version 1.0 uzS;&-nA  
*/ tHFUV\D;,  
public class ImprovedQuickSort implements SortUtil.Sort { EIOP+9zP  
C`8.8  
private static int MAX_STACK_SIZE=4096; k?_uv  
private static int THRESHOLD=10; k:&B b"  
/* (non-Javadoc) ZtpbKy!\$B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "}0)~,{x B  
*/ Ls&-8  
public void sort(int[] data) { - R`nitf  
int[] stack=new int[MAX_STACK_SIZE]; Y{8}z ZD  
JRDIGS_~  
int top=-1; c7R6.T  
int pivot; g? C<@  
int pivotIndex,l,r; 0aYoc-( A  
e )]  
stack[++top]=0; WKq{g+a  
stack[++top]=data.length-1; ^KQZ;[B  
:=K+~?  
while(top>0){ (?P\;yDG  
int j=stack[top--]; z/pxZ B ~"  
int i=stack[top--]; 0 R>!jw  
jori,"s  
pivotIndex=(i+j)/2; +Ecn  
pivot=data[pivotIndex]; qh6Q#s>tH  
|gfG\fL3V  
SortUtil.swap(data,pivotIndex,j); | 8akp  
 |  
file://partition Q%0 N\  
l=i-1; M[0NB2`Wp  
r=j; &p55Cg@e)  
do{ > v4+@o[~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %'Z`425a  
SortUtil.swap(data,l,r); D<T:UJ  
} , ksr%gR+  
while(l SortUtil.swap(data,l,r); 9ol&p>  
SortUtil.swap(data,l,j); 9]g`VD6 <v  
6N/6WrQEeg  
if((l-i)>THRESHOLD){ *tl;0<n  
stack[++top]=i; ",S146Y+  
stack[++top]=l-1; ~@"H\):/  
} 5W09>C>OC  
if((j-l)>THRESHOLD){ D+Z2y1  
stack[++top]=l+1; $qiM_06  
stack[++top]=j; <qBM+m$|)  
} xqv&^,ic  
#eKH'fE  
} w[u>*I  
file://new InsertSort().sort(data); 5#dJga/88  
insertSort(data); )1!0'j99.  
} _*wlK;`  
/** )J 8mn*  
* @param data 4?c0rC<  
*/ iz27yXHZ~  
private void insertSort(int[] data) { ziv*4  
int temp; e8k|%m<Sp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 352RJC  
} ;/!o0:m^I  
} 3E!3kSh|  
} pzT`.#N:M  
{wf5HA  
} u/J1Z>0  
tSVS ogGd  
归并排序: RvyCc!d  
cEGR?4z  
package org.rut.util.algorithm.support; XM`&/)  
B3E}fQm )  
import org.rut.util.algorithm.SortUtil; yB4eUa!1  
GGsAisF"N  
/** MKX58y{+  
* @author treeroot s6Il3K f  
* @since 2006-2-2 `X(H,Q}*;  
* @version 1.0 )c<[@ ::i  
*/ QvlV jDIy  
public class MergeSort implements SortUtil.Sort{ *b"aJ<+  
V%voe  
/* (non-Javadoc) z -'e<v;w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "!:)qVL^  
*/ {O4&HW%  
public void sort(int[] data) { UXOf  
int[] temp=new int[data.length]; %kuUQ%W1  
mergeSort(data,temp,0,data.length-1); Pje 1,B q  
} _lfS"ae  
6h1pPx7zU  
private void mergeSort(int[] data,int[] temp,int l,int r){ K}p0$Lc  
int mid=(l+r)/2; P}he}k&IR  
if(l==r) return ; C-&s$5MzGb  
mergeSort(data,temp,l,mid); \cHF V  
mergeSort(data,temp,mid+1,r); 5dL!e<<  
for(int i=l;i<=r;i++){ {`9J8qRY  
temp=data; N,&bBp  
} S>d7q  
int i1=l; )qRE['M  
int i2=mid+1; !z]{zM%  
for(int cur=l;cur<=r;cur++){ %]o/p_<  
if(i1==mid+1) &jh17y  
data[cur]=temp[i2++]; `_OB_F  
else if(i2>r) 4XSq\.@G  
data[cur]=temp[i1++]; eRg;)[#0>$  
else if(temp[i1] data[cur]=temp[i1++]; U/-|hfh  
else R+9 hog  
data[cur]=temp[i2++]; k>:\4uI|<\  
} SOluTFxUw  
} vtRz;~,Z  
zT'(I6 S:)  
} XLlJ|xhY-K  
P8 R^46  
改进后的归并排序: VYQ]?XF3i  
|A2o$H  
package org.rut.util.algorithm.support; .+~9 vH  
'^tC|)  
import org.rut.util.algorithm.SortUtil; H5be5  
C-/+n5J  
/** Sre:l'.  
* @author treeroot )O>M~  
* @since 2006-2-2 1|$J>  
* @version 1.0 Lv *USN  
*/ SGpe\P]k  
public class ImprovedMergeSort implements SortUtil.Sort { K~~LJU3  
/pJr%}sc  
private static final int THRESHOLD = 10; R4S))EHg  
UK .=Y9  
/*  }S}%4c>  
* (non-Javadoc) -$`q:j  
* 0"i QHi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2nSK}q  
*/ eH%i8a  
public void sort(int[] data) { y_T%xWK5  
int[] temp=new int[data.length]; BfQ#5  
mergeSort(data,temp,0,data.length-1); 0,6! 6>BOT  
} wIF)(t-):  
b 2~5LZ  
private void mergeSort(int[] data, int[] temp, int l, int r) { <@;bxSUx  
int i, j, k; _$KkSMA~_  
int mid = (l + r) / 2; ;.7]zn.X]2  
if (l == r) w} r mYQ  
return; J,k.*t:  
if ((mid - l) >= THRESHOLD) #,OiZQJC  
mergeSort(data, temp, l, mid); i"n1E@  
else sfsK[c5bm  
insertSort(data, l, mid - l + 1);  9-y<= )  
if ((r - mid) > THRESHOLD) Xet} J@C  
mergeSort(data, temp, mid + 1, r); T^Hq 5Oy  
else ?]>;Wr  
insertSort(data, mid + 1, r - mid); R_#k^P^  
,n$HTWa@0  
for (i = l; i <= mid; i++) { 9<5ii  
temp = data; h#u k-7  
} Cm-dos  
for (j = 1; j <= r - mid; j++) { h2 >a_0"  
temp[r - j + 1] = data[j + mid]; MF +F8h>/  
} x/%/MFK)>8  
int a = temp[l]; _;:B@Z  
int b = temp[r]; ^vTp.7o~5  
for (i = l, j = r, k = l; k <= r; k++) { .xtam 8@  
if (a < b) { 4!Lj\.!$  
data[k] = temp[i++]; * K0aR!  
a = temp; 2 y& k  
} else { f5'vjWJ30  
data[k] = temp[j--]; :*J!  
b = temp[j]; +<WNAmh   
} Z;6?,5OSc  
} `(~oZbErM  
} 4cDe'9 LA  
b>nwX9Y/U  
/** T|uG1  
* @param data _"82W^Wi  
* @param l ZJHaY09N  
* @param i m2Wi "X(I_  
*/ B8zc#0!1  
private void insertSort(int[] data, int start, int len) { ` bZgw  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^C;ULUn3  
} |43Oc:Ah+  
} i \@a&tw  
} D*ZswHT{y  
} KqXPxp^_Al  
Lo}zT-F  
堆排序: iL'j9_w,  
_: !7M ^IU  
package org.rut.util.algorithm.support; Bu4@FIK!C  
j_SUR)5  
import org.rut.util.algorithm.SortUtil; ] m #*4  
v+'*.Iv:  
/** ubl)$jZ:Q  
* @author treeroot _Pn 1n  
* @since 2006-2-2 (ZQ?1Qxo  
* @version 1.0 R HmT$^=  
*/ \ F)}brPc  
public class HeapSort implements SortUtil.Sort{ P3TM5  
TmJXkR.5  
/* (non-Javadoc) )&ucX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H_w?+Rig  
*/ ZN!<!"~  
public void sort(int[] data) { {}BAQ9|q  
MaxHeap h=new MaxHeap(); 3lN@1jlh  
h.init(data); l_P90zm39!  
for(int i=0;i h.remove(); U"L-1]L  
System.arraycopy(h.queue,1,data,0,data.length); l _zTpyOZ  
} 0m4'm<2m  
Tj!rAMQk  
private static class MaxHeap{ A&X XL~yH  
8*&YQId~  
void init(int[] data){ ,Eo\(j2F.  
this.queue=new int[data.length+1]; (SByN7[g b  
for(int i=0;i queue[++size]=data; J#\oc@  
fixUp(size); W4)bEWO+q  
} yn.[-  
} TpxAp',#7  
X5+$:jq&  
private int size=0; ix5<h }  
Twk<<  
private int[] queue; d1 lxz?r  
40 zO4  
public int get() { mcxD#+H 3  
return queue[1]; ,?wxW  
} $5>m\wrl  
_Zxo <}w}y  
public void remove() { >".@;  
SortUtil.swap(queue,1,size--); -cP1,>Ahv  
fixDown(1); 0+AMN-  
} N\Ab0mDOV.  
file://fixdown z</^qy  
private void fixDown(int k) { 0R}hAK+| 4  
int j; kv<(N  
while ((j = k << 1) <= size) { As j<u!L  
if (j < size %26amp;%26amp; queue[j] j++; j? Vs"d|  
if (queue[k]>queue[j]) file://不用交换 ts r{-4V  
break; o+Q2lO5  
SortUtil.swap(queue,j,k); aTs9lr:  
k = j; )*aAkM  
} :)%cL8Nz]$  
} Yh{5O3(;  
private void fixUp(int k) { $ SZIJe"K  
while (k > 1) { <Ik5S1<h$H  
int j = k >> 1; dcfwUjp[  
if (queue[j]>queue[k]) Jv!f6*&<  
break; gwFW+*h  
SortUtil.swap(queue,j,k); 6xu%M&ht  
k = j; OXbC\^qo@  
} *?+2%zP  
} N:,V{Pw  
im F,8'  
} 6rlvSdB  
]hZk #rp}  
} GK#D R/OM  
E CPSE {  
SortUtil: ,Qj\_vr@  
olK*uD'`  
package org.rut.util.algorithm; 9fsc>9  
Z 4c^6v  
import org.rut.util.algorithm.support.BubbleSort; 7H4kj7UK  
import org.rut.util.algorithm.support.HeapSort; \jAI~|3  
import org.rut.util.algorithm.support.ImprovedMergeSort; ,C|aiSh0-  
import org.rut.util.algorithm.support.ImprovedQuickSort; )))AxgM  
import org.rut.util.algorithm.support.InsertSort; qos/pm$&i  
import org.rut.util.algorithm.support.MergeSort; ~w(A3I.  
import org.rut.util.algorithm.support.QuickSort; W >|'4y)  
import org.rut.util.algorithm.support.SelectionSort; Sp]ov:]%f  
import org.rut.util.algorithm.support.ShellSort; Y@+9Ukd/  
[YJ*zO  
/** u\km_e  
* @author treeroot U@:l~ xJ  
* @since 2006-2-2 /9| 2uw`  
* @version 1.0 _S CY e  
*/ #;UoZJ B  
public class SortUtil { WN o+%  
public final static int INSERT = 1; (@S 9>z4s  
public final static int BUBBLE = 2; |I3&a=,  
public final static int SELECTION = 3; ,<[x9 "3\  
public final static int SHELL = 4; TJuS)AZ C  
public final static int QUICK = 5; /mwDVP<z /  
public final static int IMPROVED_QUICK = 6; S5~(3I )v  
public final static int MERGE = 7; GqgJ]m  
public final static int IMPROVED_MERGE = 8; e' |c59E  
public final static int HEAP = 9; a&[>kO  
]NKz5[9D  
public static void sort(int[] data) { EW/NH&{  
sort(data, IMPROVED_QUICK); 'lmjZ{k  
} epcvwM/A  
private static String[] name={ P#"_H}qC*  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" T7N\b]?j@Y  
}; _,w*Rv5=  
FPEab69  
private static Sort[] impl=new Sort[]{ Ad4-aWH  
new InsertSort(), ,/[1hhP@  
new BubbleSort(), Ld=6'C8ud  
new SelectionSort(), x[$ :^5V  
new ShellSort(), ]Nue1xV_  
new QuickSort(), i'}"5O+  
new ImprovedQuickSort(), VYrs4IFT$  
new MergeSort(), A$?o3--#]G  
new ImprovedMergeSort(), TBgiA}|\D  
new HeapSort() ?yA 2N;  
}; _V` QvnT}  
~L.5;8a3Pe  
public static String toString(int algorithm){ ZQmg;L&7  
return name[algorithm-1]; &+/$~@OK  
} Zm#,Ike?#  
'@"A{mrE  
public static void sort(int[] data, int algorithm) { 51'V[tI;8  
impl[algorithm-1].sort(data); LtNspFoLb  
} SA [(1dy;  
B'6(Ao=3/  
public static interface Sort { 9W j9=  
public void sort(int[] data); %t$)sg]  
} #:Ukv?  
{3 >`k.w  
public static void swap(int[] data, int i, int j) { w# ;t$qz}  
int temp = data; l!IN#|{(  
data = data[j]; Ub[UB%(T  
data[j] = temp; OO;I^`Yn  
} o^u}(wZ{  
} =E&1e;_xlE  
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