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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。 'K,:j 388  
插入排序: "@,}p\  
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package org.rut.util.algorithm.support; "OnGE$   
,:\|7F  
import org.rut.util.algorithm.SortUtil; mUF,@>o  
/** hODWB&b  
* @author treeroot 0b(N^$js'  
* @since 2006-2-2 WU=59gB+jL  
* @version 1.0 @/-\k*T  
*/ 5( HG|  
public class InsertSort implements SortUtil.Sort{ t |A-9^t'!  
jPW#(3hoE  
/* (non-Javadoc) SQt 4v"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N7R!C)!IL  
*/ pr UM-u8  
public void sort(int[] data) { [Nbm|["q~  
int temp; C#Iybg  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O55 xS+3^k  
} 9o:Lz5 o  
} M{hg0/}sUW  
} G,Azm }+  
pgZXJ  
} agW@ {c  
OMg<V  
冒泡排序: dQR-H7U  
_8UDT^?8,  
package org.rut.util.algorithm.support; pOG1jI5<{8  
um>6z_"  
import org.rut.util.algorithm.SortUtil; Q%mB |i|  
^V Zk+'4  
/** qE3UO<FA  
* @author treeroot mZ"4&U  
* @since 2006-2-2 ` 3K)GA  
* @version 1.0 Ob&<]  
*/ 7X'u6$i  
public class BubbleSort implements SortUtil.Sort{ GKc`xIQ  
-"60d @.  
/* (non-Javadoc) CDR@ `1-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qfRH5)k  
*/ ILShd)]Rw  
public void sort(int[] data) { =uYYsC\T  
int temp; o@i#|kx,  
for(int i=0;i for(int j=data.length-1;j>i;j--){ =\:qo'l  
if(data[j] SortUtil.swap(data,j,j-1); r{I% \R!@  
} lHe{\N[C  
} wLJ:\_Jaf  
} "v({ ,  
} MC:@U~}6  
I5n^,@md  
} Ay w ;N  
FOy|F-j  
选择排序: 8~z~_TD6m@  
kH7(@Pa  
package org.rut.util.algorithm.support; jeH~<t{  
P?B;_W+~A.  
import org.rut.util.algorithm.SortUtil; x&Kh>PVh\  
Jx7C'~,J  
/** 6'G6<8 >-  
* @author treeroot 5T2CISmu  
* @since 2006-2-2 K<ft2anY5  
* @version 1.0 ,-d 0b0  
*/ PV\+P6aIb  
public class SelectionSort implements SortUtil.Sort { 9s$CA4?HP  
*<jAiB ,O*  
/* D"rK(  
* (non-Javadoc) g<f <Ip=  
* "haL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .e=:RkI,  
*/ 92x(u%~E  
public void sort(int[] data) { Be=u&T:~  
int temp; Zrk4*/ VY  
for (int i = 0; i < data.length; i++) { :f}9($  
int lowIndex = i; 6qoyiT%P&  
for (int j = data.length - 1; j > i; j--) { -$jEfi4I  
if (data[j] < data[lowIndex]) { %GA"GYL9'  
lowIndex = j; Xr$J9*Jk-  
} S^>,~R.TX  
} 'H&2HXw&2  
SortUtil.swap(data,i,lowIndex); ()Y4v  
} ],FMwCI  
} L>W'LNXCv  
bg&zo;Ck8T  
} >eqxV|]i  
g Vv>9W('  
Shell排序: )d1_Wm#B  
1V4s<m>#  
package org.rut.util.algorithm.support; zHL@i0>^  
f]|ysf  
import org.rut.util.algorithm.SortUtil; ,)Ju[  
BJB^m|b)  
/** Ov4y %Pj  
* @author treeroot 7;sj%U^'l  
* @since 2006-2-2 s(%oTKjt  
* @version 1.0 Z&4&-RCi  
*/ Hh-+/sO~"  
public class ShellSort implements SortUtil.Sort{ 8U>B~9:JO  
VsgE!/>1  
/* (non-Javadoc) !2A:"2Kys:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R)z4n  
*/ dC $Em@Nb  
public void sort(int[] data) { v!Pb`LCqK  
for(int i=data.length/2;i>2;i/=2){ ^3{TZ=_;|  
for(int j=0;j insertSort(data,j,i); 9:,\gw>F  
} KgOqbSJ  
} W?aI|U1  
insertSort(data,0,1); c^u"I'#Q  
} 04'~ta(t  
~ ! 3I2  
/** 3k# /{Z  
* @param data 8p9bCE>\  
* @param j ,:`4%  
* @param i 2f:Eof(B  
*/ =p?WBZT|:  
private void insertSort(int[] data, int start, int inc) { P h}|dGb  
int temp; "D'B3; uWK  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T/xp?Vq6/  
} Y$Y_fjd_  
} {%{ `l-  
} !{ )tSipd  
%1O[i4s:-  
} ^Au _U  
oiyzHx  
快速排序: ZAUQJS 91E  
 eDJ fU  
package org.rut.util.algorithm.support; >teO m?@U  
8 <7GdCME  
import org.rut.util.algorithm.SortUtil; =gvBz| +  
S_v'hlrrT  
/** vab@-=%k  
* @author treeroot \&3"<6xA  
* @since 2006-2-2 &q~:~   
* @version 1.0 S.Ma$KL~'^  
*/ \, &co  
public class QuickSort implements SortUtil.Sort{ =;|QZ"%E  
<~!Hx+j   
/* (non-Javadoc) nJ"YIT1K]p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A"l?:?rtw]  
*/ >sjhA|gXk  
public void sort(int[] data) { mBJeqG  
quickSort(data,0,data.length-1); Vc%R$E%  
} Ra/Ukv_v  
private void quickSort(int[] data,int i,int j){ `S.ZS}~!F  
int pivotIndex=(i+j)/2; PN<C=gAe  
file://swap RUUk f({(  
SortUtil.swap(data,pivotIndex,j); |vMpXiMxxT  
ZP$-uaa-  
int k=partition(data,i-1,j,data[j]); wwowez tER  
SortUtil.swap(data,k,j);  "t$k  
if((k-i)>1) quickSort(data,i,k-1); N2$I}q%  
if((j-k)>1) quickSort(data,k+1,j); ym/fFm6h  
X3:XTuV   
} lR`'e0Lq  
/** ww{_c]My  
* @param data NU\ 5{N<  
* @param i >'5_Y]h4m|  
* @param j 1 s*.A6EP"  
* @return zYv#:>C8  
*/ 5P+t^\  
private int partition(int[] data, int l, int r,int pivot) { x]{E)d"!  
do{ ror|R@;y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -l-E_6|/W  
SortUtil.swap(data,l,r); m8JR@!t7  
} =!UR=Hq  
while(l SortUtil.swap(data,l,r); H:JLAK  
return l; FvuGup`w  
} tYqs~B3  
j! NO|&k  
} 1b>C<\  
u@P[Vb   
改进后的快速排序: $]&(7@'qo  
dj&}Gedy  
package org.rut.util.algorithm.support; !epgTN  
AdoZs8Q  
import org.rut.util.algorithm.SortUtil; y466A]|  
}GnwY97  
/** $ 'QdFkOr  
* @author treeroot qq0?e0H  
* @since 2006-2-2 w.+Eyu_I\  
* @version 1.0 8C.!V =@\  
*/ c;I, O  
public class ImprovedQuickSort implements SortUtil.Sort { IdRdW{o  
8xI`jE"1  
private static int MAX_STACK_SIZE=4096; EkKnUD  
private static int THRESHOLD=10; r<L#q)]  
/* (non-Javadoc) ;? uC=o>Z{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r7!J&8;{K  
*/ qG >DTKIU  
public void sort(int[] data) { $ A-b vL  
int[] stack=new int[MAX_STACK_SIZE]; U06o ;s(  
]Bb7(JX  
int top=-1; ^,2c-  
int pivot; 7-9;PkGG.A  
int pivotIndex,l,r; o;-<|W>  
BSp$F WvT?  
stack[++top]=0; K:qOoY  
stack[++top]=data.length-1; H] qq ~bO[  
iIU( C.I  
while(top>0){ ?SUQk55w  
int j=stack[top--]; R~B0+:6  
int i=stack[top--]; j+748QAhh  
g^o_\ hp  
pivotIndex=(i+j)/2; c%YDt`  
pivot=data[pivotIndex]; 2A$0CUMb  
,p,Du F  
SortUtil.swap(data,pivotIndex,j); ix Ow=!@  
%9c|%#3  
file://partition 12r` )  
l=i-1; D$_8rHc\A  
r=j; ~! Lw1]&  
do{ JY4_v>Aob  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ] EyeBF)$  
SortUtil.swap(data,l,r); {u]CHN`%Z  
} owMuT^x?  
while(l SortUtil.swap(data,l,r); @]3*B %t  
SortUtil.swap(data,l,j); BpXEK.Xw  
mW$ot.I  
if((l-i)>THRESHOLD){ VA]ZR+m  
stack[++top]=i; A. Nz_!  
stack[++top]=l-1; E2yz=7sv5  
} 5K(n3?1z)  
if((j-l)>THRESHOLD){ '{D%\w5{  
stack[++top]=l+1; mahi7eU P  
stack[++top]=j; "X?LAo  
} U3q5^{0d/  
ECdfLn*c  
} ag/u8  
file://new InsertSort().sort(data); )n7)}xy#z  
insertSort(data); &kq7gCd  
} CI1m5g [P  
/** #HcI4j:s!  
* @param data M7H~;S\3IM  
*/ g Np-f  
private void insertSort(int[] data) { & 3I7]Wm  
int temp; uk{J@&F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wL|7mMM,  
} @S}|Ccfc_  
} &@oq~j_7  
} /kb$p8!C".  
Pu/lpHm|  
} 1(F'~i|5  
7#/|VQX<A  
归并排序: wO\!xW:  
{G]`1Q1DR  
package org.rut.util.algorithm.support; a j_:|]j  
Kk56/(_S  
import org.rut.util.algorithm.SortUtil; a:xgjUt&5  
6g5]=Q@U:  
/** VG#$fRrZ  
* @author treeroot |<2JQ[]  
* @since 2006-2-2 HO G=c!b  
* @version 1.0 A9.;>8!u  
*/ 8Y]}Gb!  
public class MergeSort implements SortUtil.Sort{ i!ds{`d  
zVn*!c  
/* (non-Javadoc) %L.rcbg:<c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FL~9</  
*/  2w;G4  
public void sort(int[] data) { l+'`BBh*]  
int[] temp=new int[data.length]; %G^(T%q| m  
mergeSort(data,temp,0,data.length-1); 's/27=o  
} Xd5! Ti}  
%!#rrt,F  
private void mergeSort(int[] data,int[] temp,int l,int r){ Y~}QJ+`?  
int mid=(l+r)/2; ] +sSg=N7i  
if(l==r) return ; 'II vub#q  
mergeSort(data,temp,l,mid); {!>E9Px  
mergeSort(data,temp,mid+1,r); 7n$AkzO0  
for(int i=l;i<=r;i++){ .Lp Nm'=R  
temp=data; R0z?)uU#  
} c@)pKi#W  
int i1=l; YGi/]^Nba  
int i2=mid+1; CD$u=E ]  
for(int cur=l;cur<=r;cur++){ '&1  
if(i1==mid+1) kz3?j<  
data[cur]=temp[i2++]; D'Jm!Ap  
else if(i2>r) z1)$  
data[cur]=temp[i1++]; m.|qVN  
else if(temp[i1] data[cur]=temp[i1++]; _-YL!oP  
else Kn3YI9  
data[cur]=temp[i2++]; | 3hT{  
} -(|7`U  
} A;b=E[i v  
IH*U!_ `  
} c g3Cl[s  
,7WK<0  
改进后的归并排序: uVoF<={  
cS. 7\0$  
package org.rut.util.algorithm.support; 8b8e^\l(  
ktkn2Twa/  
import org.rut.util.algorithm.SortUtil; d)pz  
)ylv(qgV  
/** ~pDRF(  
* @author treeroot vCYSm  0  
* @since 2006-2-2 Xq} n^W  
* @version 1.0 nEeQL~:  
*/  3J'Bm"  
public class ImprovedMergeSort implements SortUtil.Sort { 5e~ j  
HMl!?%%  
private static final int THRESHOLD = 10; wliGds  
|*/uN~[  
/* ir( -$*J  
* (non-Javadoc) .I f"'hMY  
* ;C7BoHB9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FB?q/ _  
*/ [esX{6,i  
public void sort(int[] data) { 1( QWt  
int[] temp=new int[data.length]; &Sa_%:*D(  
mergeSort(data,temp,0,data.length-1); y^0HCp{  
} c,{&  
UpE1PLZlB  
private void mergeSort(int[] data, int[] temp, int l, int r) { P22y5z~  
int i, j, k; ly[\mGr  
int mid = (l + r) / 2; [<@A8Q5,y  
if (l == r) ] k3GFPw  
return; 71}L# nQ  
if ((mid - l) >= THRESHOLD) %nG~u,_2f  
mergeSort(data, temp, l, mid); f0N)N}y  
else gz)wUQ|W  
insertSort(data, l, mid - l + 1); -=v/p*v0o  
if ((r - mid) > THRESHOLD) 8as$h*W h  
mergeSort(data, temp, mid + 1, r); d=c1WK  
else %Hl:nT2M  
insertSort(data, mid + 1, r - mid); m;$F@JJ  
7#~m:K@  
for (i = l; i <= mid; i++) { nEZ-h7lzl(  
temp = data; =%#$HQ=  
} 5Qm.ECXV  
for (j = 1; j <= r - mid; j++) { leX7(Y;!a7  
temp[r - j + 1] = data[j + mid]; p8}5x 2F  
} *BP\6"X  
int a = temp[l]; 1Q2k>q8  
int b = temp[r]; k8t Na@H  
for (i = l, j = r, k = l; k <= r; k++) { X<@y*?D9D  
if (a < b) { :g]HB ,78  
data[k] = temp[i++]; pyb}ha  
a = temp; 3gfV0C\  
} else { ^r?sgJ  
data[k] = temp[j--]; .k!k-QO5La  
b = temp[j]; ,co9f.(w  
} A=YEY n  
} D/%b@Ls2ze  
} 1rvf\[  
|WwFE|<  
/** +oKpA\mz  
* @param data   xhVq  
* @param l VQW)qOR9  
* @param i 0o^#Fmuz  
*/ >-./kI "  
private void insertSort(int[] data, int start, int len) { ^VLUZ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); J1v0 \  
} ] l qFht  
} >i#_)th"U!  
} #I{Yf(2Z  
} rc{[\1 -N  
}FdcbNsP  
堆排序: ;?L[]Ezzt  
s R0e&Y  
package org.rut.util.algorithm.support; w]P7!t  
gm%bxr@X~  
import org.rut.util.algorithm.SortUtil; k`J..f9  
576-X _a,  
/** i!+3uHWu`)  
* @author treeroot p/^\(/\])  
* @since 2006-2-2 =D"63fP1  
* @version 1.0 HBf8!\0|/  
*/ ?}>Z_ ("  
public class HeapSort implements SortUtil.Sort{ < $?}^ 0R  
;g)Fhdy!  
/* (non-Javadoc) QT&Ws+@ s{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t-gNG!B  
*/ uJ5%JB("E  
public void sort(int[] data) { s!RA_%8/>  
MaxHeap h=new MaxHeap(); Dqcu$ V]  
h.init(data); GbrPtu2{@V  
for(int i=0;i h.remove(); qYiK bzy  
System.arraycopy(h.queue,1,data,0,data.length); \f Fy$  
} 9QQ@Y}  
$Aoqtz d\  
private static class MaxHeap{ W%<]_u[-}  
$j2)_(<A%Q  
void init(int[] data){ ua>~$`@gX  
this.queue=new int[data.length+1]; 58ZiCvqv  
for(int i=0;i queue[++size]=data; D$!p+Q  
fixUp(size); F^bQ-  
} N#!1@!2BN  
} T9v#Jb6  
3&Zx*:  
private int size=0; NHVx!Kc  
8q[WfD  
private int[] queue; 1,!\7@<CT  
)0V]G{QN  
public int get() { W>s9Mp  
return queue[1]; ?-&D'  
} NcMq>n  
<>/MKMq!  
public void remove() { Gqb-3n gH  
SortUtil.swap(queue,1,size--); $P9$ ,w4  
fixDown(1); KK3xz*W0  
} 5va&N<U  
file://fixdown {%~ Ec4r  
private void fixDown(int k) { 5 9HaTq  
int j; r&~iEO|?\  
while ((j = k << 1) <= size) { !td.ks0  
if (j < size %26amp;%26amp; queue[j] j++; @[Qg}'i  
if (queue[k]>queue[j]) file://不用交换 m)2hl~o_  
break; Dk6\p~q  
SortUtil.swap(queue,j,k); BQ)43Rr>  
k = j; o5@P>\ u>  
} vX24W*7  
} fx"+ZR  
private void fixUp(int k) { yk6UuI^/  
while (k > 1) { ,/U 9v~  
int j = k >> 1; uKzz/Y{  
if (queue[j]>queue[k]) {NqGWkGt*b  
break; 0|vWwZq  
SortUtil.swap(queue,j,k); )F2tV ]k\  
k = j; }H^^v[4  
} Q*{ 2  
} FLOJ  
^Exq=oV  
} R6.#gb8^oS  
k~F/Ho+R&  
} g o Z#  
0t0:soZ x  
SortUtil: N Uml"  
/YR $#&N2  
package org.rut.util.algorithm; Db:WAjU  
m,q<R1  
import org.rut.util.algorithm.support.BubbleSort; "7/YhLq7  
import org.rut.util.algorithm.support.HeapSort; +:Zi(SuS]  
import org.rut.util.algorithm.support.ImprovedMergeSort; ^: j:;\;  
import org.rut.util.algorithm.support.ImprovedQuickSort; TC}u[kM  
import org.rut.util.algorithm.support.InsertSort; !A0bbJ  
import org.rut.util.algorithm.support.MergeSort; Lj,%pzJ  
import org.rut.util.algorithm.support.QuickSort; OaWq8MIZ-  
import org.rut.util.algorithm.support.SelectionSort; [! BH3J!  
import org.rut.util.algorithm.support.ShellSort; i*>yUav"  
!!>G{  
/** =? aB@&  
* @author treeroot ,"ZlY}!Gn  
* @since 2006-2-2 dj]N59<  
* @version 1.0 r&RSQHa)  
*/ N`MQHQ1  
public class SortUtil { z<*]h^ !3  
public final static int INSERT = 1; ;hDr+&J|  
public final static int BUBBLE = 2; I78pul8!  
public final static int SELECTION = 3; WKML#U]5T  
public final static int SHELL = 4; h^,a 1'  
public final static int QUICK = 5; _=#mmZkq  
public final static int IMPROVED_QUICK = 6; (1vS)v $L  
public final static int MERGE = 7; ;wZ.p"T9^  
public final static int IMPROVED_MERGE = 8; wl9icrR>  
public final static int HEAP = 9; ".IhV<R  
L 'y+^L|X  
public static void sort(int[] data) { wuCODz@~  
sort(data, IMPROVED_QUICK); '4EJ_Vhztc  
} $v,_8{ !  
private static String[] name={ utv.uwfat  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" uP:'e8  
}; ja2LXM  
* -)aGL  
private static Sort[] impl=new Sort[]{ HXX"B,N  
new InsertSort(), ~9=g"v  
new BubbleSort(), *"wsMO  
new SelectionSort(), 38 F8(QU{  
new ShellSort(), S"*wP[d.9  
new QuickSort(), SX#ATf6#  
new ImprovedQuickSort(), o/&Q^^Xj^~  
new MergeSort(), K7|BXGL8r8  
new ImprovedMergeSort(), {>#Ya;E  
new HeapSort() Onao'sjY  
}; 9#+X?|p+0  
h1xYQF_`Z  
public static String toString(int algorithm){ *5^h>Vk/  
return name[algorithm-1]; ;-59#S&?tB  
} 8WMC ~  
/}Max@.`  
public static void sort(int[] data, int algorithm) { YIfbcR5  
impl[algorithm-1].sort(data); rR xqV?>n!  
} D?$f[+  
o4xZaF4+  
public static interface Sort { QM=X<?m/,=  
public void sort(int[] data); j:g/[_0s  
} ne%ckW?ks  
LaRY#9  
public static void swap(int[] data, int i, int j) { -g~$HTsGm  
int temp = data; v q|W&  
data = data[j]; ZDlMkHJ  
data[j] = temp; {=TD^>?  
} _("{fJ,A  
} w1[F]|  
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3+5=?,请输入中文答案:八 正确答案:八