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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。 #:" ]-u^  
插入排序: eSoX|2g  
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package org.rut.util.algorithm.support; *{?2M6Z  
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import org.rut.util.algorithm.SortUtil; 4AhF E@  
/** aKMX-?%t4  
* @author treeroot `G":y[Q  
* @since 2006-2-2 \zJ^XpC  
* @version 1.0 ^:?z7m  
*/ q2 7Ac; y  
public class InsertSort implements SortUtil.Sort{ SsX$l<t*  
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/* (non-Javadoc) 9y\nO)\Tv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w8D8\`i!"  
*/ _LF'0s*  
public void sort(int[] data) { pXNhU88  
int temp; V.3#O^S  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ybJa:  
} }|h-=T '  
} m:Rx<E E  
} =x w:@(]{  
=pe O %  
} 5M\0t\uEn  
Mxz X@GBX  
冒泡排序: ,~;`@  
5%S5*c6BD  
package org.rut.util.algorithm.support; j 1'H|4  
J>dj]1I  
import org.rut.util.algorithm.SortUtil; 0D:uM$ i]  
yzpa\[^  
/** 3>(~5  
* @author treeroot WL% T nux  
* @since 2006-2-2 BCExhp  
* @version 1.0 y%--/;  
*/ *QW.#y>"j  
public class BubbleSort implements SortUtil.Sort{ dY?l oFz  
A f?&VD4K  
/* (non-Javadoc) h<m>S,@g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ct /6<  
*/ Ql7opl,  
public void sort(int[] data) { p"\-iY]  
int temp; JK md'ZGw  
for(int i=0;i for(int j=data.length-1;j>i;j--){ dFeGibI{  
if(data[j] SortUtil.swap(data,j,j-1); *y"|/_ *  
} O'S xTwO  
} >y+j!)\  
} Kc9)Lzu+  
} o\j<EQb.  
oi3Ix7  
} pfim*\'  
?fs#K;w  
选择排序: #tPy0Q H  
XSZjuQ<[3  
package org.rut.util.algorithm.support; :\#]uDT2=  
VyU!r* o  
import org.rut.util.algorithm.SortUtil; IsL=DV/  
r~;.8qs  
/** .hvn/5s  
* @author treeroot t[%=[pJHW  
* @since 2006-2-2 QL(}k)dB  
* @version 1.0 `).;W  
*/ :?%_JM5U  
public class SelectionSort implements SortUtil.Sort { >fR#U"KPAB  
>|T?87  
/* /=OSGIJzm  
* (non-Javadoc) b!37:V\#}  
* CvTgtZ '  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \v_t: "  
*/ ,TO&KO1;&  
public void sort(int[] data) { qf] OSd  
int temp; `|JQ)!Agx  
for (int i = 0; i < data.length; i++) { Y@%6*uTLa  
int lowIndex = i; m4P=,=%  
for (int j = data.length - 1; j > i; j--) { ;Wr,VU]  
if (data[j] < data[lowIndex]) { Vo2frWF$  
lowIndex = j; r3{o _w  
} ]*;+ U6/?  
} "=!QSb  
SortUtil.swap(data,i,lowIndex); {&(bKQ  
} ]O&A:Us  
} +ACV,GG  
;v+CQx  
} OEGAwP?F  
>Q\H1|?  
Shell排序: ELNA-ZKp  
J=]w$e ?.P  
package org.rut.util.algorithm.support; Zr 2QeLQC(  
u= +  
import org.rut.util.algorithm.SortUtil; f{z%PI[  
0\}j[-`pF  
/** PuABS>.;  
* @author treeroot ~KfjT p#  
* @since 2006-2-2 `TsfscN  
* @version 1.0 ! xqG-rd '  
*/ <u($!ATb  
public class ShellSort implements SortUtil.Sort{ $X&OGTlw^  
E.% F/mM  
/* (non-Javadoc) :* /``  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C1rCKKh  
*/ :~)Q]G1Nj  
public void sort(int[] data) { $v oyXi`*  
for(int i=data.length/2;i>2;i/=2){ RBgkC+2  
for(int j=0;j insertSort(data,j,i); izW l5}+'B  
} 3S2'JOTY  
} |]\bgh  
insertSort(data,0,1); +[ }]a3)  
} _&![s]  
zB]T5]  
/** L,4 ^Of  
* @param data R +JI ?/H  
* @param j x?<5=,  
* @param i j1iC1=`ZM  
*/ Q6W)rJ[|  
private void insertSort(int[] data, int start, int inc) { /tv;W  
int temp; 80]TKf>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ];2eIe  
} rqh,BkQ0t  
} QBn>@jq  
} Yh%wf3 UEO  
Tk2kis(n  
} g4$%)0x%  
Zz&i0 r  
快速排序: 0 De M  
mVL,J=2  
package org.rut.util.algorithm.support; E;d 5$  
CC-:dNb  
import org.rut.util.algorithm.SortUtil; z|?R=;,u`  
Po4cbFZ  
/** |8`;55G  
* @author treeroot x[^A9  
* @since 2006-2-2 r;T/  
* @version 1.0 ry]7$MQyV  
*/ v#+w<gRq  
public class QuickSort implements SortUtil.Sort{ )?bb]hZg?O  
IP;@unBl  
/* (non-Javadoc) t(rU6miN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G-^ccdT  
*/ pz IMj_  
public void sort(int[] data) { yl 8v&e{  
quickSort(data,0,data.length-1); J3.Q8f  
} .M{[J]H`t  
private void quickSort(int[] data,int i,int j){ Q%xY/xH]  
int pivotIndex=(i+j)/2; ?(<AT]hV:  
file://swap 9c7 }-Go  
SortUtil.swap(data,pivotIndex,j); udZ: OU<  
Yr=mLT|JN  
int k=partition(data,i-1,j,data[j]); S7q &|nI  
SortUtil.swap(data,k,j); "qm>z@K  
if((k-i)>1) quickSort(data,i,k-1); mfN@tMp  
if((j-k)>1) quickSort(data,k+1,j); bgK(l d`  
rpT<cCem1  
} >oNk(. %  
/** Z%{f[|h9}  
* @param data GDB>!ukg  
* @param i U44H/5/  
* @param j )x7hhEk=^  
* @return *vO'Z &  
*/ piFQ7B  
private int partition(int[] data, int l, int r,int pivot) { e,*[5xQ  
do{ ;2|H6IN"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 19u? ^w  
SortUtil.swap(data,l,r); Aii[=x8  
} Xh/av[Q  
while(l SortUtil.swap(data,l,r); ,6S 8s  
return l; feW9 >f;  
} E\S&} K,s  
bN&da [K  
} VT7NWT J,  
)\;r V';  
改进后的快速排序: 7&)F;;H  
k9xKaJ %1  
package org.rut.util.algorithm.support; 6v#G'M#r  
!v L :P2  
import org.rut.util.algorithm.SortUtil; W 8NA.  
iIw ea`  
/** i?/?{p$#a-  
* @author treeroot $bosGG  
* @since 2006-2-2 ~&:R\  
* @version 1.0 eFI4(Y  
*/ \(FDR  
public class ImprovedQuickSort implements SortUtil.Sort { _64@zdL+  
OJ 5 !+#>  
private static int MAX_STACK_SIZE=4096; mD)O\.uA  
private static int THRESHOLD=10; 2AW{qwk7  
/* (non-Javadoc) (d#Z-w-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SXz([Z{)  
*/ >2 qP  
public void sort(int[] data) { b]#d04]  
int[] stack=new int[MAX_STACK_SIZE]; !S-U8KI|  
F8Wq&X#r  
int top=-1; l7!)#^`2_  
int pivot; 6{X>9hD  
int pivotIndex,l,r; 9`{2h$U  
8w[EyVHA  
stack[++top]=0; 9Ol_z\5  
stack[++top]=data.length-1; l5ds`uR#  
q*nz4QTOE  
while(top>0){ Gnt!!1_8L  
int j=stack[top--]; uP2a\C,$  
int i=stack[top--]; K>6k@okO  
- (}1o9e\7  
pivotIndex=(i+j)/2; Z|% 2495\  
pivot=data[pivotIndex]; ?\M6P?tpo&  
k& s7 -yY  
SortUtil.swap(data,pivotIndex,j); +yH~G9u(  
)>5k'1  
file://partition vqi$}=%n?W  
l=i-1; S\;.nAR  
r=j; )"uG*}\?b  
do{ am+mXb  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ha! "BR  
SortUtil.swap(data,l,r); !cwVJe  
} wP0+Xv,  
while(l SortUtil.swap(data,l,r); c@7hLUaE2  
SortUtil.swap(data,l,j); O f@#VZ  
So.P @CCd  
if((l-i)>THRESHOLD){ mS}x2 &  
stack[++top]=i; `j}d=zZ  
stack[++top]=l-1; ]UT|BE4v  
} !o':\hex6  
if((j-l)>THRESHOLD){ L_K\i?  
stack[++top]=l+1; lY*]&8/=  
stack[++top]=j; bK8F |  
} rOb"S*  
:yjK*"T|OD  
} F(~_L.  
file://new InsertSort().sort(data); /&as)  
insertSort(data); */y]!<\v!k  
} fbTw6Fde$  
/** Wx)U<:^e  
* @param data fR%1FXpK&  
*/ 2 U`W[  
private void insertSort(int[] data) { hUvuq,LH_  
int temp; 3;S`<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SuH.lCF-g  
} M6iO8vY  
} yL x .#kx6  
} \R\@t] >Y  
L2.`1Aag  
} D#Yx,`Ui  
Ij}F<ZgZG  
归并排序: (e3Gs+;  
T) tZU?  
package org.rut.util.algorithm.support; ;GFB@I@  
s[2ZxCrCw  
import org.rut.util.algorithm.SortUtil; |EV\a[  
!FO^:V<|5  
/** #lshN,CPm  
* @author treeroot 6mpg&'>  
* @since 2006-2-2 vF6*c  
* @version 1.0 J2< QAX  
*/ [ 7Lxt  
public class MergeSort implements SortUtil.Sort{ tb?F}MEe  
Z<|_+7T  
/* (non-Javadoc) Iei7!KLW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wEnuUC4j  
*/ =ch Af=  
public void sort(int[] data) { ~K-*q{6Q  
int[] temp=new int[data.length]; tG2OVRx8u  
mergeSort(data,temp,0,data.length-1); ' q<EZ {  
} \btR^;_\A  
#>m, Cm  
private void mergeSort(int[] data,int[] temp,int l,int r){  ;[KriW  
int mid=(l+r)/2; `o8{qU,*]N  
if(l==r) return ; =6Sj}/   
mergeSort(data,temp,l,mid); n~)HfY  
mergeSort(data,temp,mid+1,r); rH&r6Xv[  
for(int i=l;i<=r;i++){ s'aV qB  
temp=data; q bZ,K@0  
} ?(/j<,m^  
int i1=l; mDF"&.(j  
int i2=mid+1; mk%"G=w  
for(int cur=l;cur<=r;cur++){ r3H}*Wpf  
if(i1==mid+1) *M&VqG4P9w  
data[cur]=temp[i2++]; 3_\{[_W  
else if(i2>r) 2@3.xG  
data[cur]=temp[i1++]; }x?H ~QQT  
else if(temp[i1] data[cur]=temp[i1++]; 1KYbL8c  
else 8S1P&+iKs  
data[cur]=temp[i2++]; RHx+HBZ  
} )0U3w#,JQ  
} !<=%;+  
RJRq` T|m  
} ?#*  
v=*Bb3dt  
改进后的归并排序: /}nrF4S  
_D>as\dP  
package org.rut.util.algorithm.support; 88#qu.  
UROj9CO v  
import org.rut.util.algorithm.SortUtil; ?H[5O+P[  
8{G?92 {rN  
/** Q\27\2  
* @author treeroot C^/ -lc  
* @since 2006-2-2 X$-b oe?  
* @version 1.0 %]chL.s  
*/ 2fzKdkJhe  
public class ImprovedMergeSort implements SortUtil.Sort { %R5Com  
," C[Qg(  
private static final int THRESHOLD = 10; y^ X\^Kq  
XJmFJafQD  
/* lHcZi  
* (non-Javadoc) WXLe,7y  
* {}g %"mi#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z(Eke  
*/ \7,MZt  
public void sort(int[] data) { $AA~]'O>6:  
int[] temp=new int[data.length]; my\o P(e\  
mergeSort(data,temp,0,data.length-1); ` y^zM/Ib  
} _oJ2]f6KX  
a IpPL8a  
private void mergeSort(int[] data, int[] temp, int l, int r) { KbwTj*k[  
int i, j, k; kUn2RZ6$#  
int mid = (l + r) / 2; 2#AeN6\@  
if (l == r) 7`b lGzP_  
return; }iua] 4 |  
if ((mid - l) >= THRESHOLD) : F7k{~  
mergeSort(data, temp, l, mid); NV} RRs  
else =de<WoKnu2  
insertSort(data, l, mid - l + 1); +z:CZ(fb  
if ((r - mid) > THRESHOLD) b|sc'eP#?  
mergeSort(data, temp, mid + 1, r); O->_/_  
else (ve+,H6w\  
insertSort(data, mid + 1, r - mid); ]~ !X iCqu  
*?_qE  
for (i = l; i <= mid; i++) { `E} p77  
temp = data; <$jKy3@  
} r"{Is?yKe  
for (j = 1; j <= r - mid; j++) { 6kt]`H`cfJ  
temp[r - j + 1] = data[j + mid]; \}$*}gW[}  
} RDs,sj/Y9?  
int a = temp[l]; Jo{ zy  
int b = temp[r]; mb0n}I_AC  
for (i = l, j = r, k = l; k <= r; k++) { Ky[bX  
if (a < b) { kqVg2#<@M  
data[k] = temp[i++]; 8^/+wa+G  
a = temp; [ 8F \;  
} else { LkJ$aW/  
data[k] = temp[j--]; T&1-eq>l  
b = temp[j]; {q&@nm40  
} 2#z=z d  
} Qm.z@DwFM{  
} AH&9Nye8  
>j50 ;</  
/** ==]Z \jk  
* @param data wVgi+P  
* @param l ?. zu2  
* @param i bK3B3r#$  
*/ { EA2   
private void insertSort(int[] data, int start, int len) { Y 3o^Euou  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +w "XNl  
} =m`l%V[  
} EfKM*;A  
} [O=W>l  
} "A%MVym."  
;"1/#CY773  
堆排序: &&X$d!V  
 bt;lq!g  
package org.rut.util.algorithm.support; EVR! @6@  
`$J'UXtGc  
import org.rut.util.algorithm.SortUtil; /^w"' '  
Ns'FH(:  
/** VR "u*  
* @author treeroot hIR@^\?  
* @since 2006-2-2 qh%i5Mu  
* @version 1.0 oG!6}5  
*/ "?$L'!bM@  
public class HeapSort implements SortUtil.Sort{ !q!"UMiG  
,# ]+HS^B  
/* (non-Javadoc) $zdd=.!KiK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mv{<'  
*/ $h,d? .u6w  
public void sort(int[] data) { i wUv`>l&  
MaxHeap h=new MaxHeap(); PmHd9^C  
h.init(data); ]de\i=?|  
for(int i=0;i h.remove(); Ujf,6=M  
System.arraycopy(h.queue,1,data,0,data.length); W:WQaF`2x  
} cI5N"U@yN  
T-^0:@5o9  
private static class MaxHeap{ sr\cVv")  
UanEzx%  
void init(int[] data){ W/sY#"  
this.queue=new int[data.length+1]; RF:04d  
for(int i=0;i queue[++size]=data; @9aGz6k+  
fixUp(size); h{I`7X  
} gt'*B5F(  
} a_Jb> }  
nh<Z1tMU  
private int size=0; GSP?X$E  
YNI;h%w  
private int[] queue; SgiDh dE  
C#0brCQq3  
public int get() { sa G8g  
return queue[1]; }"hW b(  
} ] @ufV  
> V8sm/M  
public void remove() { M;qBDT~)  
SortUtil.swap(queue,1,size--); wZQ)jo7*g  
fixDown(1); WVOoHH  
} P7Xg{L&@.  
file://fixdown sdrWOq  
private void fixDown(int k) { rS4%$p"  
int j; (Ux [[  
while ((j = k << 1) <= size) { [,rn3CA  
if (j < size %26amp;%26amp; queue[j] j++; (Izf L1  
if (queue[k]>queue[j]) file://不用交换 %yfE7UPS]  
break; iUTU*El>  
SortUtil.swap(queue,j,k); Hte[TRbM  
k = j; Bhe{L?}0  
} fH[Wkif  
} )9B:Y;>)  
private void fixUp(int k) { FNC[59   
while (k > 1) { 1eHe~p ,  
int j = k >> 1; i3P9sdTD  
if (queue[j]>queue[k]) Hs$'0:  
break; ~q 7;8<U  
SortUtil.swap(queue,j,k); H'Nq#K  
k = j; -G-3q6A  
} tF^g<)S;t  
} ->h5T%sn  
\%TyrY+`K  
} ya.n'X14  
xz8G}Ku  
} FIS "Z(  
l[oe*aYN7  
SortUtil: Lc|{aN  
P 6.!3%y  
package org.rut.util.algorithm; TcJ$[  
tb,9a!?  
import org.rut.util.algorithm.support.BubbleSort; P\AqpQv  
import org.rut.util.algorithm.support.HeapSort; t+O e)Ns  
import org.rut.util.algorithm.support.ImprovedMergeSort; ,:UX<6l R  
import org.rut.util.algorithm.support.ImprovedQuickSort; q_sEw~~@!  
import org.rut.util.algorithm.support.InsertSort; i$C-)d]  
import org.rut.util.algorithm.support.MergeSort; lI6W$V\,  
import org.rut.util.algorithm.support.QuickSort; &n>7Ir  
import org.rut.util.algorithm.support.SelectionSort;  L=]p_2+  
import org.rut.util.algorithm.support.ShellSort; xzr<k Sp  
[pL*@9Sa&  
/** t"|DWC*  
* @author treeroot -uj3'g (;w  
* @since 2006-2-2 oQ\&}@(V  
* @version 1.0 G>K@AW #  
*/ RYy,wVh}  
public class SortUtil { bq NP#C  
public final static int INSERT = 1; ,EI:gLH  
public final static int BUBBLE = 2; #K4*6LI  
public final static int SELECTION = 3; [Gtb+'8  
public final static int SHELL = 4; O,'#C\   
public final static int QUICK = 5; E7`qmn  
public final static int IMPROVED_QUICK = 6; 64umul  
public final static int MERGE = 7; +rc SL8C  
public final static int IMPROVED_MERGE = 8; C6]OAUXy:F  
public final static int HEAP = 9; $gvr -~  
?:uNN  
public static void sort(int[] data) { VD [pZ2;4  
sort(data, IMPROVED_QUICK); "VTF}#Uo  
}  z)w-N  
private static String[] name={ : G=FiC  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" t7*#[x)a  
}; ^~1<f1(  
wd+K`I/v7h  
private static Sort[] impl=new Sort[]{ Ryv_1gR!  
new InsertSort(), 0` 5e  
new BubbleSort(), I2[]A,f ,  
new SelectionSort(), '3Q3lM'lh  
new ShellSort(), R\O.e  
new QuickSort(), snC/H G7  
new ImprovedQuickSort(),  prrT:Y  
new MergeSort(), nB] Ia?  
new ImprovedMergeSort(), wxdyF&U n  
new HeapSort() :kG)sw7  
}; x-;`-Uo%  
t)a;/scT  
public static String toString(int algorithm){ HdNnUDb$B  
return name[algorithm-1]; !0" nx{7.  
} N'?u1P4G  
bK*~ol  
public static void sort(int[] data, int algorithm) { H M:r0_  
impl[algorithm-1].sort(data); T1bd:mC}n  
} kO_5|6  
L l}yJ#3,  
public static interface Sort { K 1W].(-@4  
public void sort(int[] data); !20X sO  
} 76@qHTh }  
H=~9CJ+tc  
public static void swap(int[] data, int i, int j) { (MLhaux-  
int temp = data; +@:L|uFU  
data = data[j]; OfZN|S+~W  
data[j] = temp; -6C +LbV  
} *9 D!A  
} N`$!p9r  
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