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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。 Vn4wk>b}$2  
插入排序: E0R6qS:'  
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package org.rut.util.algorithm.support; \?>M?6D  
IC&P-X_aP  
import org.rut.util.algorithm.SortUtil; ^e_LnJ+  
/** chKK9SC+|  
* @author treeroot n'v\2(&uYN  
* @since 2006-2-2 -z~!%4 a  
* @version 1.0 Ac|\~w[\  
*/ cd1G.10  
public class InsertSort implements SortUtil.Sort{ t$z[ ja=  
_0v+'&bz  
/* (non-Javadoc) u30D`sky  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K\rQb  
*/ V-}}?c1 F  
public void sort(int[] data) { <M@-|K"Eb  
int temp; ey=KAt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N"G aQ  
} OIL8'xY.w  
} :${tts2g  
} # G 77q$  
UMR?q0J  
}  vUJ; D  
0mujf  
冒泡排序: /@k#tdj  
@wgd 3BU  
package org.rut.util.algorithm.support; ]~I+d/k d  
~_vSMX  
import org.rut.util.algorithm.SortUtil; )rK2%\Z  
\~ChbPnc  
/** +ODua@ULFB  
* @author treeroot OALNZKP  
* @since 2006-2-2 x_nwD"   
* @version 1.0 ^~;ia7V&2  
*/ +Cw_qS"=  
public class BubbleSort implements SortUtil.Sort{ W~'xJ  
)"pvF8JR%3  
/* (non-Javadoc) R~4X?@ZB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n(J>'Z  
*/ RyJy%| \-S  
public void sort(int[] data) { xKG7d8=  
int temp; 3$nK   
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^obuMQ;  
if(data[j] SortUtil.swap(data,j,j-1); z~pp7  
} V_gl#e#  
} b<00 %Z  
} `y3'v]  
} :J`@@H  
Sl G v  
} E7fQ9]  
t1adS:)s  
选择排序: e4tIO   
LigB!M  
package org.rut.util.algorithm.support; fz=?QEG  
#y83tNev  
import org.rut.util.algorithm.SortUtil; ,r~+ 9i0N  
25)9R^  
/** TC?B_;a  
* @author treeroot cjEqN8  
* @since 2006-2-2 qh~bX i!  
* @version 1.0 q++r\d^{  
*/ ?eIb7O  
public class SelectionSort implements SortUtil.Sort { vd4@jZ5  
;>v.(0FE6  
/* /h0bBP  
* (non-Javadoc) Q v9q~l  
* =0=#M(w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CJ\a7=*i  
*/ iYStl  
public void sort(int[] data) { U=.PL\  
int temp; G;l7,1;MU:  
for (int i = 0; i < data.length; i++) { z l@^[km{  
int lowIndex = i;  2h   
for (int j = data.length - 1; j > i; j--) { J,yKO(}<C  
if (data[j] < data[lowIndex]) { (`.OS)&  
lowIndex = j; XP@dg4Z=z  
} ,Z@#( =f  
} R+M=)Z  
SortUtil.swap(data,i,lowIndex); g#J aw|N  
} KdR4<qVV}  
} h=7q;-@7  
b_31 \  
} qNQ54#  
e^Zm09J  
Shell排序: );gY8UL^  
}csA|cC  
package org.rut.util.algorithm.support; W[8Kia-OD  
a;HAuy`M x  
import org.rut.util.algorithm.SortUtil; E 5&Z={  
7Jf~Bn  
/** j,M$l mR')  
* @author treeroot *): |WDR  
* @since 2006-2-2 |h]V9=  
* @version 1.0 fg^25g'_  
*/ ZRagM'K  
public class ShellSort implements SortUtil.Sort{ OUv<a `0  
pLB2! +  
/* (non-Javadoc) UCLM*`M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d05xn7%!{  
*/ ,Xn2xOP  
public void sort(int[] data) { }%_|k^t  
for(int i=data.length/2;i>2;i/=2){ Zhq_ pus"a  
for(int j=0;j insertSort(data,j,i); $D^\[^S  
} P8d  
} +~^S'6yB  
insertSort(data,0,1); G(&[1V%x  
} ,9P-<P  
U**8^:*y#:  
/** J/je/PC  
* @param data ,X?/FAcb  
* @param j rVz.Ws#  
* @param i ED&nrd1P  
*/ C?z S}ob  
private void insertSort(int[] data, int start, int inc) { kTb$lLG\xk  
int temp; UBaXS_c\  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]RCo@QW  
} GE/!$3  
} * 65/gG8>  
} d51lTGH7Z  
<Vhd4c  
} G^c,i5}w  
v Y[s#*+  
快速排序: jrib"Bh3,  
 Unk/uk  
package org.rut.util.algorithm.support; @{y'_fw  
*7!MG  
import org.rut.util.algorithm.SortUtil; Xh@K89`uX  
QQl.5'PP  
/** @nktD.  
* @author treeroot *g(d}C!  
* @since 2006-2-2 s@\3|e5g  
* @version 1.0 cbJgeif  
*/ `|'w]rj:"+  
public class QuickSort implements SortUtil.Sort{ #J[g r_  
C`.YOkpj  
/* (non-Javadoc) nrl?<4 _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t1']q"  
*/ P7drUiX  
public void sort(int[] data) { l]]NVBA])  
quickSort(data,0,data.length-1); fs! dI  
} l~r;G rd/5  
private void quickSort(int[] data,int i,int j){ C]L)nCOBX  
int pivotIndex=(i+j)/2; hfwJZ\_60  
file://swap )CFJ Xc:  
SortUtil.swap(data,pivotIndex,j); >XgoN\w  
P6gkbtg  
int k=partition(data,i-1,j,data[j]); .(@=L1C<}J  
SortUtil.swap(data,k,j); UsE\p9mCuV  
if((k-i)>1) quickSort(data,i,k-1); WyO*8b_ D  
if((j-k)>1) quickSort(data,k+1,j); |bnd92fvks  
]v ${k  
} A({czHLhN5  
/** ;(NTzBq!1  
* @param data Z0<Vss  
* @param i kF|$oBQ  
* @param j PL:(Se%  
* @return z9o]);dZ  
*/ >dAl*T  
private int partition(int[] data, int l, int r,int pivot) { IK -vcG  
do{ S@qPf0dL<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K"!rj.Da  
SortUtil.swap(data,l,r); &f.5:u%{b  
} @@ Q4{o  
while(l SortUtil.swap(data,l,r); zIc6L3w$  
return l; 7P{= Pv+  
} 6r~9$IM  
q%3VcR$J  
} w~]2c{\Qz  
P27Ot1px  
改进后的快速排序: C @Ts\);^  
3qWrSziD  
package org.rut.util.algorithm.support; ,cxqr3 o  
(qA F2&  
import org.rut.util.algorithm.SortUtil; $JFjR@j  
2Io| ?  
/** 0)dpU1B#M  
* @author treeroot (TeH)j!  
* @since 2006-2-2 ~?/7: S  
* @version 1.0 0F$|`v"0  
*/ | R,dsBd  
public class ImprovedQuickSort implements SortUtil.Sort { PF4[;E S'  
UynGG@P@  
private static int MAX_STACK_SIZE=4096; A;U c&G  
private static int THRESHOLD=10; oiyvKMHz7  
/* (non-Javadoc) QytO0K5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?1\5X<|,  
*/ k5RzW4zq;  
public void sort(int[] data) { SzLlJUVX  
int[] stack=new int[MAX_STACK_SIZE]; HYl+xH'.j  
%pZT3dcK  
int top=-1; "@x( 2(Y&  
int pivot; +wQ5m8E  
int pivotIndex,l,r; Ec7xwPk  
r9f- C  
stack[++top]=0; \9+,ynJH8z  
stack[++top]=data.length-1; dX?j /M-  
G]B0LUT6c  
while(top>0){ r'i99 ~  
int j=stack[top--]; ]D6<6OB  
int i=stack[top--]; kHK<~srB  
$ DN.  
pivotIndex=(i+j)/2; U`*we43  
pivot=data[pivotIndex]; _kD5pC =  
lg|6~=aQ  
SortUtil.swap(data,pivotIndex,j); h#zm+([B*  
i}T* | P  
file://partition as:=QMV  
l=i-1; ei2?H;H;  
r=j; DS8HSSD  
do{ 2?,l r2  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); dwn|1%D  
SortUtil.swap(data,l,r); 8i6iynR  
} c<1$ zQY!  
while(l SortUtil.swap(data,l,r); u/tJ])~@  
SortUtil.swap(data,l,j); o9sQ!gptw  
GVT 6cR  
if((l-i)>THRESHOLD){ !MSa -  
stack[++top]=i; i%yKyfD  
stack[++top]=l-1; +HE,Q6-A  
} Pr>$m{ Z  
if((j-l)>THRESHOLD){ ( %sf wv  
stack[++top]=l+1; 1XS~b-St  
stack[++top]=j; MKtI 3vi?  
} 51}C`j|V3{  
XzAXcxC6G  
} pll5m7[  
file://new InsertSort().sort(data); >(:3H+  
insertSort(data); 55v=Ij?M  
} ejg!1*H@n  
/** J#d,?  
* @param data .UxkTads  
*/ y1`%3\  
private void insertSort(int[] data) { T3b0"o27  
int temp; jzi%[c<G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *r>Y]VG;S  
} '(lsJY[-x  
} OBFM70K  
} #W:.Fsq  
&'\-M6GW  
} @kd$.7Y9  
s\.r3U&6  
归并排序: drCL7.j#L  
%~eu&\os  
package org.rut.util.algorithm.support; ycN!N  
PR;Bxy  
import org.rut.util.algorithm.SortUtil; w[2E:Nj  
1sUgjyGQ  
/** E2hML  
* @author treeroot V^(W)\  
* @since 2006-2-2 .t ^1e  
* @version 1.0 qPu?rU{2  
*/ W&A^.% 2l  
public class MergeSort implements SortUtil.Sort{ + fvVora  
HmXxM:[4;  
/* (non-Javadoc) Njo.-k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L `2{H%J`  
*/ uToi4]w"y  
public void sort(int[] data) { aV f sF|,  
int[] temp=new int[data.length]; >>=zkPy  
mergeSort(data,temp,0,data.length-1); 25G~rklk  
} VU\G49  
B4OFhtYE  
private void mergeSort(int[] data,int[] temp,int l,int r){ }T%E;m-  
int mid=(l+r)/2; 1% @i4  
if(l==r) return ; _576Qa'rm  
mergeSort(data,temp,l,mid); h6Vd<sV\tf  
mergeSort(data,temp,mid+1,r); EhW@iYL  
for(int i=l;i<=r;i++){ }lk9|U#6*`  
temp=data; pJ?y  
} uxW |&q  
int i1=l; 7WV"Wrl]  
int i2=mid+1; %i&am=  
for(int cur=l;cur<=r;cur++){ MDpx@.A,  
if(i1==mid+1) +MS*YpPW  
data[cur]=temp[i2++]; fN`Prs A  
else if(i2>r) |r*y63\T  
data[cur]=temp[i1++]; ~H ctXe'x  
else if(temp[i1] data[cur]=temp[i1++]; Ow0~sFz  
else T+V:vuK  
data[cur]=temp[i2++]; D<Z\6)|%I  
} Lxa<zy~b  
} 0l(G7Ju  
sI)jqHZG  
} #;2kN &  
]<},[s  
改进后的归并排序: 7CT446  
.j!:Hp(z}  
package org.rut.util.algorithm.support; TIV|7nKL  
9dg+@FS}=  
import org.rut.util.algorithm.SortUtil; `=TJw,q  
S{cK~sZj  
/** 'pAq;2AA  
* @author treeroot *XXa 9z  
* @since 2006-2-2 k%RQf0`T  
* @version 1.0 WAr6Dv,8  
*/ ?AQR\)P  
public class ImprovedMergeSort implements SortUtil.Sort { C-2#-{<  
eET1f8 B=L  
private static final int THRESHOLD = 10; CwF=@:*d  
o>M&C X+j$  
/* `)jAdad-s  
* (non-Javadoc) $nthMx$  
* mqQ//$Y   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 RyvPP  
*/ o<S(ODOfi  
public void sort(int[] data) { n%dh|j2u  
int[] temp=new int[data.length]; (.M &nN'Ce  
mergeSort(data,temp,0,data.length-1); gA+@p'XnR  
} :JxuaM8  
=HoA2,R)  
private void mergeSort(int[] data, int[] temp, int l, int r) { M/6q ^*  
int i, j, k; `?"[u" *  
int mid = (l + r) / 2; *fDhNmQ `  
if (l == r) L{1PCs36c  
return; .|6Wmn-uS  
if ((mid - l) >= THRESHOLD) k1^&;}/f:  
mergeSort(data, temp, l, mid); F-?s8RD  
else -1F+,+m  
insertSort(data, l, mid - l + 1); 9(9\kQj{C  
if ((r - mid) > THRESHOLD) 7baQ4QY?n  
mergeSort(data, temp, mid + 1, r); y#{> tC  
else LZpqv~av  
insertSort(data, mid + 1, r - mid); 2)`4(38  
0o!Egq_  
for (i = l; i <= mid; i++) { $T'lWD*  
temp = data; [{-;cpM \  
} K30{Fcb< h  
for (j = 1; j <= r - mid; j++) { gDsb~>rb|  
temp[r - j + 1] = data[j + mid]; sU?%"q  
} nrZZkQNI  
int a = temp[l]; 9<!Ie^o?  
int b = temp[r]; )e\IdKl=  
for (i = l, j = r, k = l; k <= r; k++) { XgZ.UT  
if (a < b) { XCZNvLG  
data[k] = temp[i++]; x_KJCU  
a = temp; v+2t;PJd2  
} else { 7gbu7"Qc  
data[k] = temp[j--]; Pu|3_3^  
b = temp[j]; 7N fA)$  
} *p%=u>?&  
} 8DJoQl9  
} pj'[ H  
v+`gQXJ"G  
/** .37Jrh0Iv  
* @param data zC\L-i>G  
* @param l !.5,RIf  
* @param i 4T:@W C  
*/ e/!xyd  
private void insertSort(int[] data, int start, int len) { _"c?[n  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); dX~$#-Ad86  
} 5@@ilvwzz  
} q vGkTE  
} Ut^ {4_EC  
} V> @+&q  
 HO =\  
堆排序: 0=KyupwXC  
t=(CCq_N,  
package org.rut.util.algorithm.support; 5XA{<)$  
z0-`D.D@\  
import org.rut.util.algorithm.SortUtil; s(Llz]E~ZX  
]PjJy/vkjj  
/** b$1W>  
* @author treeroot 9TbRrS09  
* @since 2006-2-2 *5|q_K Pt  
* @version 1.0 <%]i7&8|  
*/ s8 0$   
public class HeapSort implements SortUtil.Sort{ ":N E I  
uz;z+Bd^  
/* (non-Javadoc) <2{-ey]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J9*$@&@S  
*/ hE>%LcP  
public void sort(int[] data) { le J\  
MaxHeap h=new MaxHeap(); ,O/ t6'  
h.init(data); $Q< >M B7  
for(int i=0;i h.remove(); &ywU^hBh  
System.arraycopy(h.queue,1,data,0,data.length); )>|x2q  
} j UCrj'  
aaM76;  
private static class MaxHeap{ f& >[$zh  
8!(09gW'>  
void init(int[] data){ VsM~$ )  
this.queue=new int[data.length+1]; V t@]  
for(int i=0;i queue[++size]=data; yd4\%%]  
fixUp(size); z<9wh2*M  
} bs=x>F  
} v46 5Z  
[ GqQ6\  
private int size=0; iSg^np  
^9*kZV<K  
private int[] queue; Pwg?a  
)Cfk/OnRd  
public int get() { ||t"}Y  
return queue[1]; Zw<\^1  
} 05gdVa,  
1iTI8h&[@  
public void remove() { { vOr'j@  
SortUtil.swap(queue,1,size--); SV0h'd(b  
fixDown(1); B78e*nNS#2  
} _)? 59  
file://fixdown n6]8W^g  
private void fixDown(int k) { MYVgi{  
int j;  )tW0iFY  
while ((j = k << 1) <= size) { =9AX\2w*H;  
if (j < size %26amp;%26amp; queue[j] j++; soXIPf  
if (queue[k]>queue[j]) file://不用交换 2/m4|  
break; hFp\,QSx  
SortUtil.swap(queue,j,k); 8\ { 1y:|  
k = j; _gl7Ma  
} ^\ocH|D  
} ~ '/Yp8 (  
private void fixUp(int k) { c Y(2}Ay  
while (k > 1) { 5b5Hc Inu  
int j = k >> 1; R *uwp'@  
if (queue[j]>queue[k]) TKBW2  
break; 2jiH&'@  
SortUtil.swap(queue,j,k); 2=/,9ka~  
k = j; \hr2#!  
} wYAi-gdOi  
} [DzZ:8  
BL^\"Xh$|  
} |qFCzK9tD/  
}5qpiS"V9  
} $zUHka   
Yg kd1uI.  
SortUtil: l" P3lKS  
E6Uiw]3  
package org.rut.util.algorithm; O4.`N?Xq  
9`X}G`  
import org.rut.util.algorithm.support.BubbleSort; 7`_`V&3s  
import org.rut.util.algorithm.support.HeapSort; :[C"}m R1  
import org.rut.util.algorithm.support.ImprovedMergeSort; o!-kwtw`l  
import org.rut.util.algorithm.support.ImprovedQuickSort; cA8A^Iv:0  
import org.rut.util.algorithm.support.InsertSort; 6A23H7  
import org.rut.util.algorithm.support.MergeSort; Cl>{vS N  
import org.rut.util.algorithm.support.QuickSort; j}fu|-  
import org.rut.util.algorithm.support.SelectionSort; 9H#;i]t&  
import org.rut.util.algorithm.support.ShellSort; g/f^|:  
R Q2DTQ-$  
/** 3JJEj1O  
* @author treeroot @zGz8IF  
* @since 2006-2-2 =)mA.j}E2  
* @version 1.0 I->BDNk  
*/ ^ 9`O ^  
public class SortUtil { =d M'n}@U  
public final static int INSERT = 1; &b:SDl6  
public final static int BUBBLE = 2;  :qe.*\ c  
public final static int SELECTION = 3; ly~tB LH}  
public final static int SHELL = 4; zz_(*0,Qcr  
public final static int QUICK = 5; 0hr4}FL8  
public final static int IMPROVED_QUICK = 6; dn}'B%  
public final static int MERGE = 7; VkJBqRzBOa  
public final static int IMPROVED_MERGE = 8; SW WeN#Q  
public final static int HEAP = 9; w1J%%//(h  
<A`zK  
public static void sort(int[] data) { Mj5&vs~n;  
sort(data, IMPROVED_QUICK); [wv;CUmgc  
} e WWtMnq  
private static String[] name={ *P0sl( &  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" AREpZ2GiU  
}; (R|Ftjs .  
>o,l/# z  
private static Sort[] impl=new Sort[]{ 1 ` ={* *  
new InsertSort(), fuao*L]  
new BubbleSort(), Pof]9qE-y  
new SelectionSort(), mP[ZlS~"  
new ShellSort(), /JbO$A  
new QuickSort(), q)rxv7Iu\  
new ImprovedQuickSort(), ]7DS>%m Y(  
new MergeSort(), Yx"un4  
new ImprovedMergeSort(), K zWqHq  
new HeapSort() gO%o A} !i  
}; p|9Eue3j2  
bTepTWv  
public static String toString(int algorithm){ .6HHUy  
return name[algorithm-1]; $3)Z>p   
} e.VR9O]G  
q:ah%x[  
public static void sort(int[] data, int algorithm) { s)9d\{  
impl[algorithm-1].sort(data); O~DdMW  
} 6O\a\z  
sX[k}=HCK  
public static interface Sort { -a\[`JHi  
public void sort(int[] data); !}I+)@~\w  
} ={[9kR i  
]Mb:zs<r  
public static void swap(int[] data, int i, int j) { !&#5 *  
int temp = data; V<ExR@|}.%  
data = data[j]; Gk-49|qIV  
data[j] = temp; VbfTdRD-  
} hA:RVeS{  
} O0RV>Ml'&  
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