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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。 ~B(6+~%  
插入排序: Alxx[l\<J  
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package org.rut.util.algorithm.support; L{`JRu  
BGu?<bET  
import org.rut.util.algorithm.SortUtil; x UD-iSY  
/** pLzk   
* @author treeroot yiA<,!;4P  
* @since 2006-2-2 2Roc|)-47  
* @version 1.0 2m2;t0  
*/ *v3]}g[<  
public class InsertSort implements SortUtil.Sort{ aUtnR<6  
b 'pOJS  
/* (non-Javadoc) 8M`#pN^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >cCR2j,r  
*/ u5%7}<nNi  
public void sort(int[] data) { EB8\_]6XJ  
int temp; qm8&*UuKJ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JC3m.)/  
} w:<W.7y?0  
} i?F >+  
} 8UVmv=T  
PuZf/um  
} M%0C_=zg  
UTH_^HAN#G  
冒泡排序: BFOq8}fX2  
YS%h^>I^  
package org.rut.util.algorithm.support; `6xkf&Kt  
}dd8N5b  
import org.rut.util.algorithm.SortUtil; 8Bjib&im  
/Dj=iBO  
/** 9 o&`5  
* @author treeroot WV_.Tiy<  
* @since 2006-2-2 [a wjio  
* @version 1.0 ]&pds\  
*/ N/K.%<h  
public class BubbleSort implements SortUtil.Sort{ :H wA 5Z#  
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/* (non-Javadoc) ~S7 D>D3S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yLQ*"sw\  
*/ +P`*kj-P\  
public void sort(int[] data) { f V'ZsJ N  
int temp; 7G>dTO  
for(int i=0;i for(int j=data.length-1;j>i;j--){ z3;*Em8Ir  
if(data[j] SortUtil.swap(data,j,j-1); 7*Ej. HK  
} :1bWVM)  
} VeQg -#&I  
} !74S  
} !*%WuyCgr4  
Z Z:}AQ  
} T, )__h  
v63"^%LX  
选择排序: TO?R({yx*  
#T=LR@y  
package org.rut.util.algorithm.support; YLzx<~E4a  
S9~ +c  
import org.rut.util.algorithm.SortUtil; .G#8a1#  
~2QR{; XQ  
/** yooX$  
* @author treeroot e(GP^oK  
* @since 2006-2-2 UZJCvfi  
* @version 1.0 .xm.DRk3  
*/ [Q/TlOt5  
public class SelectionSort implements SortUtil.Sort { li}1S  
rFj-kojg  
/* c_'OPJ  
* (non-Javadoc) U$WxHYo  
* nwF2aRNV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 65 #'\+  
*/ )\J+Kiy)  
public void sort(int[] data) { 0dGAP  
int temp; 5BlR1*  
for (int i = 0; i < data.length; i++) { q#,f 4P  
int lowIndex = i; #/Vh|UeX  
for (int j = data.length - 1; j > i; j--) { ]dGw2y  
if (data[j] < data[lowIndex]) { "J [K 3  
lowIndex = j; 10q'Z}34  
} 0Tx{3#  
} y)W@{@{kl  
SortUtil.swap(data,i,lowIndex); WSp  
} )GM41t1i  
} C1m]*}U  
LE9(fe) fe  
} w&o&jAb-M  
`lO[x.[  
Shell排序: &:dH,  
C9n?@D;S  
package org.rut.util.algorithm.support; jY% na HaI  
+zaA,e?\  
import org.rut.util.algorithm.SortUtil; ]+XYEv  
C/vI EYG4  
/** d4>Z8FF|1B  
* @author treeroot 4W#vP  
* @since 2006-2-2 Q@<S[Qh[.  
* @version 1.0 )4<__|52"1  
*/ qln3 k`  
public class ShellSort implements SortUtil.Sort{ .<x&IJ /  
;CmS ~K:  
/* (non-Javadoc) +;N2p1ZBf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]* F\"C@  
*/ m'6&9Ja k  
public void sort(int[] data) { T>x&T9  
for(int i=data.length/2;i>2;i/=2){ zF8dKFE~  
for(int j=0;j insertSort(data,j,i); H%UL%l$  
} 4cabP}gBk  
} wVicyiY]  
insertSort(data,0,1); 4'`{H@]tb  
} bx{$Y_L+p  
#sPHdz'3M  
/** 2 Ga7$q  
* @param data ;V*R*R  
* @param j tiB_a}5IB  
* @param i #{?PbBE}  
*/ e vrXo"3  
private void insertSort(int[] data, int start, int inc) { )0"wB  
int temp; 4C<j dv_J  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &]e'KdXF  
} m?pstuUK(  
} L+Xc-uv["p  
} \K@'Z  
ej4W{IN~:  
} PP;}e  
!UG 7Uer  
快速排序: v0-cd  
kbTm^y"  
package org.rut.util.algorithm.support; !46RGU:I  
M m[4yP%  
import org.rut.util.algorithm.SortUtil; ?t/~lv  
@&%'4j&+  
/** iVp,e  
* @author treeroot 5R'TcWf#W  
* @since 2006-2-2 ohFJZ'  
* @version 1.0 //T>G_1  
*/ rR9|6l 3  
public class QuickSort implements SortUtil.Sort{ 2 ^mJ+v<  
C~nzH,5  
/* (non-Javadoc) <j&DK2u=i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |X0Y-  
*/ 4wID]bKM  
public void sort(int[] data) { T*#/^%HSG  
quickSort(data,0,data.length-1); r\b3AKrIN  
} OTGofd2zf  
private void quickSort(int[] data,int i,int j){ qUjmB sB  
int pivotIndex=(i+j)/2; P|.]DJ  
file://swap _A+s)]}  
SortUtil.swap(data,pivotIndex,j); P;P%n  
m@"QDMHk.  
int k=partition(data,i-1,j,data[j]); MaRi+3F  
SortUtil.swap(data,k,j); B:gjAb}9T  
if((k-i)>1) quickSort(data,i,k-1); J6U$qi  
if((j-k)>1) quickSort(data,k+1,j); (@%gS[]  
lDOCmdt@N  
} w8kOVN2b  
/** O\E/. B  
* @param data z.GMqW%B  
* @param i }\HN&@  
* @param j ] 8Q4BW  
* @return R%Q@   
*/ }._eIx"  
private int partition(int[] data, int l, int r,int pivot) { jDy-)2<  
do{ 4*Q#0`um  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S `#w+C#EW  
SortUtil.swap(data,l,r); 5Yl <h)1  
} ny`#%Vs  
while(l SortUtil.swap(data,l,r); ;.TRWn#  
return l; ~(Q)"s\1I  
} JBJhG<J  
&Q>k7L!  
} t^6dzrF  
&K.?p2$X  
改进后的快速排序: a#>Yh;FA  
5[A@ gw0u  
package org.rut.util.algorithm.support; ,=Mt`aN  
cIav&Zko  
import org.rut.util.algorithm.SortUtil; 95YL]3V  
W0l,cOOZJ  
/** i(iXD  
* @author treeroot }HY-uQ%@g  
* @since 2006-2-2 ;~"FLQg@  
* @version 1.0 !Cr(P e]  
*/ d5oIH  
public class ImprovedQuickSort implements SortUtil.Sort { #7MUJY+ 9  
?)u@Rf9>  
private static int MAX_STACK_SIZE=4096; qNYN-f~@,  
private static int THRESHOLD=10; CbwJd5tk  
/* (non-Javadoc) qWODs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hRs&t,{&  
*/ ~g5[$r-u-u  
public void sort(int[] data) { B oC5E#;G  
int[] stack=new int[MAX_STACK_SIZE]; ~} ,=OF-b  
]=>F.GE  
int top=-1;  \4v]7SV  
int pivot; 8$0rR55  
int pivotIndex,l,r; H^s<{E0<  
eD*A )  
stack[++top]=0; }Q=!Y>Tc  
stack[++top]=data.length-1; cNM3I,o7  
SV2M+5#;  
while(top>0){ vSi.txV2  
int j=stack[top--]; ~])t 6i  
int i=stack[top--]; bT^I"  
B2C$N0R#  
pivotIndex=(i+j)/2; U$_xUG  
pivot=data[pivotIndex]; uf&myV7  
Tl2C^j  
SortUtil.swap(data,pivotIndex,j); a{ ?`t|  
(]Y 5eM  
file://partition TWQG591  
l=i-1; J"=vE=  
r=j; 1T-8K r  
do{ \}p6v}  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i`dC G[  
SortUtil.swap(data,l,r); Y#u}tE d  
} ?kB2iU_f+  
while(l SortUtil.swap(data,l,r); vK _?<>  
SortUtil.swap(data,l,j); dIRm q+d^  
rdJ d#S  
if((l-i)>THRESHOLD){ DGAX3N;r6{  
stack[++top]=i; v" OY 1<8  
stack[++top]=l-1; 9hOJvQ2U]  
} H\qC["  
if((j-l)>THRESHOLD){ 5A sP5  
stack[++top]=l+1; ?q; Fp  
stack[++top]=j; W!?7D0q  
} %2XHNW  
`eIenA  
} 5ZMR,SZhC  
file://new InsertSort().sort(data); WXmn1^"kK}  
insertSort(data); fp[|M  
} ~ ; -! n;  
/** ,0hA'cp  
* @param data i1>- QDYnJ  
*/ qL6 |6-?  
private void insertSort(int[] data) { }lfnnK#  
int temp; L7V G`h;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U`Wauv&  
} _g~qu [1  
} (Nx;0"5IX  
} ^sVX)%  
JvT"bZk( o  
} m"o ;L3  
qU#BJON]BR  
归并排序: wyQzM6:,yX  
A` AaTP  
package org.rut.util.algorithm.support; Um: Hrjw  
<j5NFJ9  
import org.rut.util.algorithm.SortUtil; G=A,9@+c  
VxXzAeM  
/** ?_Q/}@`  
* @author treeroot 9Iz%ht  
* @since 2006-2-2 l"2OP6d  
* @version 1.0 4qYUoCR&  
*/ RW}"2  
public class MergeSort implements SortUtil.Sort{ &d5ia+ #  
])Qs{hs~s  
/* (non-Javadoc) 7 <Q5;J&;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2c:#O%d(  
*/ 4y5UkU9|  
public void sort(int[] data) { 3l3'bw2  
int[] temp=new int[data.length]; Ie4hhW  
mergeSort(data,temp,0,data.length-1); d\FJFMW*9  
} I= .z+#Y  
a'jR#MQl?  
private void mergeSort(int[] data,int[] temp,int l,int r){ H03jDM8Q  
int mid=(l+r)/2; [w&$|h:;  
if(l==r) return ; L[20m (6?  
mergeSort(data,temp,l,mid); X0M1(BJgGo  
mergeSort(data,temp,mid+1,r); ]<q[Do8k  
for(int i=l;i<=r;i++){ T7d9ChU\#.  
temp=data; hwI Mn33  
} }LijnHH.  
int i1=l; Kbb78S30  
int i2=mid+1; jvV9eA:zl  
for(int cur=l;cur<=r;cur++){ 9gEssTkts  
if(i1==mid+1) = pzn u+,  
data[cur]=temp[i2++]; Z+StB15  
else if(i2>r) p!<$vE  
data[cur]=temp[i1++]; .LuB\o$  
else if(temp[i1] data[cur]=temp[i1++]; bgK<pi)d  
else n]u<!.X  
data[cur]=temp[i2++]; %T[^D&9$,  
} ^+1#[E  
} L:k9# 6  
A,) VM9M_l  
} if]Noe  
<6G1 1-K  
改进后的归并排序:  =Mb1o[  
DS%\SrC  
package org.rut.util.algorithm.support; 4#'(" #R  
| /|  
import org.rut.util.algorithm.SortUtil; R3!@?mcr  
03iv3/{H  
/** |P.6<  
* @author treeroot B=@ jWz"  
* @since 2006-2-2 9P<[7u  
* @version 1.0 )Y8",Ig  
*/ V&|!RxWK  
public class ImprovedMergeSort implements SortUtil.Sort { n 8pt\i0  
~-83Q5/[  
private static final int THRESHOLD = 10;  N<L`c/  
tWdhDt8$&  
/* wO>L#"X^v  
* (non-Javadoc) \@;\t7~  
* wfjc/u9W6R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7 ua6l[c  
*/ /n4pXT  
public void sort(int[] data) { u<n`x6gL  
int[] temp=new int[data.length]; Y= 7%+WyD  
mergeSort(data,temp,0,data.length-1); lI/0:|l  
} =5s F"L;b  
}N*>QR5K  
private void mergeSort(int[] data, int[] temp, int l, int r) { vwr74A.g0  
int i, j, k; Xm4CKuU@  
int mid = (l + r) / 2; o_Si mJFK  
if (l == r) 2Nj9U#A  
return; #2:a[ ~Lf  
if ((mid - l) >= THRESHOLD) a? R[J==  
mergeSort(data, temp, l, mid);  j4R 4H;  
else {FI\~ q  
insertSort(data, l, mid - l + 1); 9Z6C8J v  
if ((r - mid) > THRESHOLD) .!}hhiF,Z  
mergeSort(data, temp, mid + 1, r); ~^vC,]hU  
else D0;tcm.$  
insertSort(data, mid + 1, r - mid); >x[`;O4  
ap}5ElMR  
for (i = l; i <= mid; i++) { PVa o  
temp = data; @+_&Y]  
} t?^9HP1b_  
for (j = 1; j <= r - mid; j++) { 2>\\@ 1  
temp[r - j + 1] = data[j + mid]; y@wF_WX2  
}  0v^:  
int a = temp[l]; 9zgNjjCl]  
int b = temp[r]; XV'fW~j\  
for (i = l, j = r, k = l; k <= r; k++) { =w<v3wWN4  
if (a < b) { 5% nt0dc  
data[k] = temp[i++]; d \>2  
a = temp; >m_v5K  
} else { yoqa@V  
data[k] = temp[j--]; ;5 <-)  
b = temp[j]; `dJDucD  
} S2~@nhO`U(  
} |xr32g s  
} 'Zk<l#"}  
i=v]:TOu  
/** U '[?9/T  
* @param data ~_!ts{[E  
* @param l v9}[$HWx  
* @param i ykq'g|  
*/ hbuZaxo<  
private void insertSort(int[] data, int start, int len) { s0{ NsK>  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `HUf v@5  
} J-J3=JG  
} LD+f'^>>Z  
} Kla:e[{  
} /BH.>R4`A  
8.I9}_  
堆排序: /aUFc'5  
7unA"9=[4V  
package org.rut.util.algorithm.support; Sb^ b)q"  
\Tq "mw9P  
import org.rut.util.algorithm.SortUtil; p q-!WQ  
$ u2Cd4  
/** vmKT F!;  
* @author treeroot Um ;kd&#x  
* @since 2006-2-2 E_[ONm=,  
* @version 1.0 - 8syjKTg  
*/ 0&`}EXe<f  
public class HeapSort implements SortUtil.Sort{ @ t@|q  
#J+\DhDEPO  
/* (non-Javadoc) *5wv%-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pi%tsKk%  
*/ k.Zll,s  
public void sort(int[] data) { 'P/taEi=R  
MaxHeap h=new MaxHeap(); II#  
h.init(data); 9kd.j@C  
for(int i=0;i h.remove(); }W "(c YN_  
System.arraycopy(h.queue,1,data,0,data.length); 3#9M2O\T  
} 7l}~4dm2J  
v,\93mNp[  
private static class MaxHeap{ $i&\\QNn  
zjoo{IH}  
void init(int[] data){ JfKg_&hM  
this.queue=new int[data.length+1]; zZYHc?Z  
for(int i=0;i queue[++size]=data; Ak|b0l>^  
fixUp(size); 7Jc<.Z"/Gd  
} )tPl<lb  
} pU[K%@sC  
")\ *2d  
private int size=0; l-=e62I{=|  
rHo6iJj  
private int[] queue; 14u^[M" U  
j}RM.C\7  
public int get() { 8AX3C s_G  
return queue[1]; </hR!Sb]  
} >;.*  
h~.V[o7=  
public void remove() { A xR\ ned  
SortUtil.swap(queue,1,size--); F$C+R&V_  
fixDown(1); .6I%64m  
} /]l f>\x1  
file://fixdown ;l#?SYY  
private void fixDown(int k) { lzI/\%  
int j; 0, "ZV}  
while ((j = k << 1) <= size) { PJ6$);9}6  
if (j < size %26amp;%26amp; queue[j] j++; Z0z)  
if (queue[k]>queue[j]) file://不用交换 $WM8tF?H  
break; X{|k<^:  
SortUtil.swap(queue,j,k); zlN+edgY#,  
k = j;  z8tt+AU  
} Z_!9iA:X  
} b__n~\q_  
private void fixUp(int k) { ur`V{9g  
while (k > 1) { o+R. u}|  
int j = k >> 1; _]Z$YM  
if (queue[j]>queue[k]) @nW'(x(  
break; >0ssza  
SortUtil.swap(queue,j,k); \J\vp0[nO}  
k = j; W|)(|W  
} Ubpg92  
} 'fX er!L}  
%{c2lyw  
} AZ}%MA; q  
KS8\F0q  
} 78\\8*  
`~sf}S :  
SortUtil: HL|0d }  
s-y'<(ll  
package org.rut.util.algorithm; fdvi}SS8  
30e(4@!4vW  
import org.rut.util.algorithm.support.BubbleSort; D_]i/ F%  
import org.rut.util.algorithm.support.HeapSort; &Qz"nCvJ  
import org.rut.util.algorithm.support.ImprovedMergeSort; c M|af#o  
import org.rut.util.algorithm.support.ImprovedQuickSort; zX006{vig  
import org.rut.util.algorithm.support.InsertSort; %pQdq[J={  
import org.rut.util.algorithm.support.MergeSort; \0xzBs1!  
import org.rut.util.algorithm.support.QuickSort; <$Xn:B<H  
import org.rut.util.algorithm.support.SelectionSort; hnlU,p&y3  
import org.rut.util.algorithm.support.ShellSort; tVK?VNW  
^2P;CAjj-  
/** '&&~IB4ud  
* @author treeroot c1=;W$T(s  
* @since 2006-2-2 .f[\G*   
* @version 1.0 Bx_8@+  
*/ X*D5y8<  
public class SortUtil { rl_1),J\qG  
public final static int INSERT = 1; V~tu<"%  
public final static int BUBBLE = 2; K'ed5J  
public final static int SELECTION = 3; -#:Y+"'  
public final static int SHELL = 4; oQKcGUZ  
public final static int QUICK = 5; ,(5dQ`hA0  
public final static int IMPROVED_QUICK = 6; 70I4-[/z[d  
public final static int MERGE = 7; ~%::r_hQ  
public final static int IMPROVED_MERGE = 8; S@l a.0HDA  
public final static int HEAP = 9; 'ocwXyP,  
#m[w=Pu}  
public static void sort(int[] data) { "Hsq<oV8  
sort(data, IMPROVED_QUICK); fM zAf3  
} C=pPI  
private static String[] name={ U(=f5|-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #z1ch,*3;  
}; 6='_+{   
J,&`iL-  
private static Sort[] impl=new Sort[]{ 2Q;Y@%G  
new InsertSort(), Jh/M}%@|  
new BubbleSort(), 9# .NPfMF  
new SelectionSort(), FK/ro91L  
new ShellSort(), hBs>2u|z9  
new QuickSort(), FcbA)7dD  
new ImprovedQuickSort(), jwtXI\@MS  
new MergeSort(), :)3$&QdHT  
new ImprovedMergeSort(), _tR.RAaa"  
new HeapSort() PK|`}z9  
}; |] f"j':  
f T+n-B  
public static String toString(int algorithm){ j#.-MfB  
return name[algorithm-1]; K:Xrfn{s  
}  C.TCDl  
R'a5,zEo/  
public static void sort(int[] data, int algorithm) { {D_4~heF  
impl[algorithm-1].sort(data); ,BN}H-W\2  
} Rc m(Y7  
h0EGhJs  
public static interface Sort { :Y)kKq d  
public void sort(int[] data); e7j]BzGvl  
} N#6A>  
qytGs@p_  
public static void swap(int[] data, int i, int j) { -QNMB4  
int temp = data; s }R:q  
data = data[j]; 7=ga_2  
data[j] = temp; JNz"lTt>[g  
} p?gLW/n  
} <t|9`l_XW  
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