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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。 5;MK1l  
插入排序: @52=3  
iC|6roO!jk  
package org.rut.util.algorithm.support; QjjJtKz  
y~c4:*L3  
import org.rut.util.algorithm.SortUtil; $ l sRg:J  
/** .V 3X#t  
* @author treeroot PP[)h,ZL*  
* @since 2006-2-2 q8 xc70: R  
* @version 1.0 yCkW2p]s,K  
*/ %{~mk[d3  
public class InsertSort implements SortUtil.Sort{ -?w v}o  
zNr_W[  
/* (non-Javadoc) <aSLm=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _h=< _Z  
*/ AV[PQI  
public void sort(int[] data) { JIbzh?$aD  
int temp; XJlDiBs9=Q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YNgR1 :l  
} 9CK\tx&  
} E0)mI)RW.  
} ),p]n  
f-v ND'@  
} @t; O"q'|  
~?`9i>3W~  
冒泡排序: G9'YgW+$7  
+ersP@G  
package org.rut.util.algorithm.support; ksOANLRN  
w] 5U  
import org.rut.util.algorithm.SortUtil; fv j5[Q  
dy6F+V\DG  
/** U8QR*"GmT  
* @author treeroot M,_^hm7  
* @since 2006-2-2 j^$3vj5E[  
* @version 1.0 JM+sHHs  
*/ xH`j7qK.  
public class BubbleSort implements SortUtil.Sort{ $~G0#JL  
h*\TCl)  
/* (non-Javadoc) ^=izqh5S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3<)@ll  
*/ $E`i qRB  
public void sort(int[] data) { Y6f+__O  
int temp; 7<QYT+6xV  
for(int i=0;i for(int j=data.length-1;j>i;j--){ HzG~I8o(d  
if(data[j] SortUtil.swap(data,j,j-1); qD$GKN.  
} t.>te'DK/  
} n$m]58w  
} {*<O"|v  
} @wB'3q}(  
d)hzi  
} ^aD/ .  
N}}PlGp$  
选择排序: =hugnX<9  
3<jAp#bE  
package org.rut.util.algorithm.support; 1fO2)$Y  
fUp|3bBE  
import org.rut.util.algorithm.SortUtil; `Dz]z_  
mHI4wS>()+  
/** D?\"  
* @author treeroot k67i`f=  
* @since 2006-2-2 %7C%`)T]  
* @version 1.0 nv_m!JG7  
*/ STXqq[+Rf  
public class SelectionSort implements SortUtil.Sort { gf3u0' $  
<(#xOe  
/* N'eQ>2>O@  
* (non-Javadoc) 2sd ) w  
* s.p1L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EvSnZB1 y  
*/ C>JekPeM  
public void sort(int[] data) { x  tYV"  
int temp; $K6?(x_  
for (int i = 0; i < data.length; i++) { #!8^!}nFO  
int lowIndex = i; "5o;z@(  
for (int j = data.length - 1; j > i; j--) { RFZU}.*K$  
if (data[j] < data[lowIndex]) { Pghva*&  
lowIndex = j; AT%* ~tr  
} As6)_8w  
} M\\e e3Ih  
SortUtil.swap(data,i,lowIndex); "UhK]i*@l  
} Z0()pT  
} ;"d,~nLn  
`Ct'/h{  
} %?]{U($?  
[Hv*\rb  
Shell排序: [D<RV3x9  
"q9~ C  
package org.rut.util.algorithm.support; WIEx '{  
a%MzNH  
import org.rut.util.algorithm.SortUtil; @O}IrC!bf  
$tDCS  
/** koncWyW  
* @author treeroot ;Ch+X$m9  
* @since 2006-2-2 =2.tu*!C  
* @version 1.0 zJnL<Q  
*/ )d770Xg+  
public class ShellSort implements SortUtil.Sort{ ^Txu ~r0@  
xUiWiOihr6  
/* (non-Javadoc) t-*VsPy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (aDb^(]>  
*/ >0Fxyv8  
public void sort(int[] data) { ^MWEfPt  
for(int i=data.length/2;i>2;i/=2){ [ 5CS}FB  
for(int j=0;j insertSort(data,j,i); :"OZc7 ~  
} RsqRR`|X?  
} !q~X*ZKse  
insertSort(data,0,1); 7gVh!rm  
} J^+_8  
#;\L,a|>*  
/** tsTR2+GZS  
* @param data P[Y{LKAbb  
* @param j $'A4RVVT  
* @param i iX8h2l  
*/ a' IX yj  
private void insertSort(int[] data, int start, int inc) { 71k!k&Im  
int temp; }j+~'O4m  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qy7hkq.uX  
} fbh6Ls/  
} olD@W UB  
} l?[{?Luq  
f p v= P  
} %+AS0 JhB  
T7>4 8eH  
快速排序: I!|y;mh:it  
:Az8K)  
package org.rut.util.algorithm.support; ttK,((=@  
=&di4'`  
import org.rut.util.algorithm.SortUtil; b34zhZ  
2x7(}+eD  
/** c&E*KfOG  
* @author treeroot bn0"M+7)f  
* @since 2006-2-2 a za o`z  
* @version 1.0 d u.HSXK  
*/ Zw;$(="  
public class QuickSort implements SortUtil.Sort{ O{lIs_1.Z  
8yHq7=  
/* (non-Javadoc) ~/^y.SsWM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mV6#!_"  
*/ a(PjcQ4dY  
public void sort(int[] data) { eP V-yy  
quickSort(data,0,data.length-1); G*kE~s9R  
} 07.nq;/R  
private void quickSort(int[] data,int i,int j){ 3c01uObTL  
int pivotIndex=(i+j)/2; "-G&=(  
file://swap u/z,92mmS  
SortUtil.swap(data,pivotIndex,j); 8ku? W  
d4jVdOq2  
int k=partition(data,i-1,j,data[j]); 1U717u  
SortUtil.swap(data,k,j); T{_1c oL  
if((k-i)>1) quickSort(data,i,k-1); @PYW|*VS  
if((j-k)>1) quickSort(data,k+1,j); E)KB@f<g*  
f:_=5e +  
} #^5a\XJb  
/** :~\LOKf  
* @param data [NQmL=l  
* @param i 9T8|y]0F  
* @param j ;):8yBMk  
* @return L_tjcfVo  
*/ %)zk..K{l  
private int partition(int[] data, int l, int r,int pivot) { 9k+N3vA  
do{ v57N^DR{  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U8 Z~Y}29  
SortUtil.swap(data,l,r); ' oBo|  
} gb.f%rlZ`  
while(l SortUtil.swap(data,l,r); \BN|?r$a  
return l; ^ H'hD  
} M%7`8KQ  
@''&nRC1  
} w@87]/4Rq  
_aVJ$N.  
改进后的快速排序: /)sDnJ1r  
* eA{[  
package org.rut.util.algorithm.support; Gh2#-~|cB  
%GM>u2baw  
import org.rut.util.algorithm.SortUtil; ^$e0t;W=  
~RcNZ\2y  
/** VT'0DQ!NIq  
* @author treeroot o^6jyb!j  
* @since 2006-2-2 4uFIpS|rq  
* @version 1.0 3Z_t%J5QZ$  
*/ [_j6cj]  
public class ImprovedQuickSort implements SortUtil.Sort { :9(3h"  
`2>XH:+7F  
private static int MAX_STACK_SIZE=4096;  `>%-  
private static int THRESHOLD=10; 7;^((.]ln  
/* (non-Javadoc) {?w"hjy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MKomq  
*/ BqQ] x'AF  
public void sort(int[] data) { ||R0U@F,  
int[] stack=new int[MAX_STACK_SIZE]; /rqqC(1  
3 t/ R2M  
int top=-1; - o4@#p>>  
int pivot; \^Ep>Pq`]  
int pivotIndex,l,r; 7 n\mj\  
$2Kau 1  
stack[++top]=0; iwvt%7  
stack[++top]=data.length-1; Vre=%bGw  
dAL0.>|`0  
while(top>0){ (RExV?:  
int j=stack[top--]; Kl2}o|b   
int i=stack[top--]; #>BX/O*D  
$+7ci~gs  
pivotIndex=(i+j)/2; X2i*iW<  
pivot=data[pivotIndex]; YdK _.t0Mu  
T0;u+$  
SortUtil.swap(data,pivotIndex,j); FX7M4t#<  
K*[9j 0  
file://partition M|ms$1x  
l=i-1; !IN @i:m  
r=j; DUqJ y*F(  
do{ w nWgy4:  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); B#1:Y;Z  
SortUtil.swap(data,l,r); mU>&ql?e  
} ~ W@X-  
while(l SortUtil.swap(data,l,r); r)Or\HL  
SortUtil.swap(data,l,j); WPtMds4  
J`W-]3S#  
if((l-i)>THRESHOLD){ A1Ka(3"  
stack[++top]=i;  -H`\? R  
stack[++top]=l-1; ]\7lbLv  
} 9MT? .q  
if((j-l)>THRESHOLD){ JfbKf~g  
stack[++top]=l+1; L1rwIOgq^  
stack[++top]=j; &&&9  
} z* RSMfRW  
>jv\Qh  
} $.wA?`1aSk  
file://new InsertSort().sort(data); F,Q?s9s  
insertSort(data); {H+?z<BF<  
} #Gd7M3  
/** B=r0?%DX"1  
* @param data TiQ^}5~M  
*/ GYd]5`ri  
private void insertSort(int[] data) { EA6t36|TX  
int temp; +GYS26  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W+.{4 K  
} O"\nR:\  
} Cw%BZ  
} RE 9nU%!  
MA$Xv`6I\  
} Gbn4 *<N  
3524m#4&@  
归并排序: Qo.Uqz.C  
alc]  
package org.rut.util.algorithm.support; DKTD Z*  
%MbyKz:X  
import org.rut.util.algorithm.SortUtil; t-!m vx9Z  
pr$~8e=c  
/** D;jK/2  
* @author treeroot #MglHQO+  
* @since 2006-2-2 U-eI\Lu  
* @version 1.0 3?@?-q2g  
*/ 7lR<@$q  
public class MergeSort implements SortUtil.Sort{ Ew]<jF|.#  
c yP,[?N  
/* (non-Javadoc) H'Ln P>@n#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PS$k >_=t  
*/ }a^|L"  
public void sort(int[] data) { 9#Bx]wy  
int[] temp=new int[data.length]; e=7W 7^"_  
mergeSort(data,temp,0,data.length-1);  &+G; R  
} R]Ek}1~?  
IM=+3W;ak  
private void mergeSort(int[] data,int[] temp,int l,int r){ %l]Rh/VPn?  
int mid=(l+r)/2; mB`D}g$  
if(l==r) return ; lufeieW  
mergeSort(data,temp,l,mid); L<=)@7  
mergeSort(data,temp,mid+1,r); (UGol[f<  
for(int i=l;i<=r;i++){ 'B`#:tX^N  
temp=data; c" +zgP  
} #]y5z i  
int i1=l; O#:&*Mv  
int i2=mid+1; =JW[pRI5a  
for(int cur=l;cur<=r;cur++){ AWT"Y4Ie  
if(i1==mid+1) f`?0WJ(M  
data[cur]=temp[i2++]; #uKWuGz]  
else if(i2>r) B6MkF"J<  
data[cur]=temp[i1++]; 3$_*N(e  
else if(temp[i1] data[cur]=temp[i1++]; 7}%H2$Do  
else  HxIoA  
data[cur]=temp[i2++]; P6YQK+  
} B?3juyB`--  
} hVM2/j  
r|fO7PD  
} 5)`h0TK  
('4wXD]C  
改进后的归并排序: ,9\Snn  
K6B4sE  
package org.rut.util.algorithm.support; 8teJ*sz  
K &dT(U  
import org.rut.util.algorithm.SortUtil; DW|vMpU]u  
kiX%3(  
/** gu<V (M\  
* @author treeroot >v5k{Cbp0  
* @since 2006-2-2 yubSj*  
* @version 1.0 BN_7Ay/k  
*/ FH5ql~  
public class ImprovedMergeSort implements SortUtil.Sort { .m4;^S2cO  
[w \?j,  
private static final int THRESHOLD = 10; f|7u_f  
T=Z.U$  
/* M^madx6`  
* (non-Javadoc) _GtBP'iN  
* >H|` y@]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e(B9liXM  
*/ ug&[ IL~lc  
public void sort(int[] data) { CC >=UF  
int[] temp=new int[data.length]; Vy)hDa[&  
mergeSort(data,temp,0,data.length-1); !sSQQo2Sv  
} N+W&NlZ   
UHO_Z  
private void mergeSort(int[] data, int[] temp, int l, int r) { PH4%R]{8{  
int i, j, k; Wa"(m*hW  
int mid = (l + r) / 2; ;GHvPQc_  
if (l == r) "E=j|q  
return; Pt< s* (  
if ((mid - l) >= THRESHOLD) JcO08n  
mergeSort(data, temp, l, mid); B/uniR^x  
else w Fn[9_`*  
insertSort(data, l, mid - l + 1); l95<QI  
if ((r - mid) > THRESHOLD) Z0,~V  
mergeSort(data, temp, mid + 1, r); d.<~&.-$  
else k)(Biz398E  
insertSort(data, mid + 1, r - mid); Y;J*4k]  
_O:WG&a6  
for (i = l; i <= mid; i++) { F1azZ (  
temp = data; WgR4Ix^L#  
} *<V^2z$y_  
for (j = 1; j <= r - mid; j++) {  3yS  
temp[r - j + 1] = data[j + mid]; ni CE\B~  
} =v6*|  
int a = temp[l]; 5"Kx9n|  
int b = temp[r]; b B  
for (i = l, j = r, k = l; k <= r; k++) { p#8W#t$  
if (a < b) { 3NK ^AaTK  
data[k] = temp[i++]; q`|CrOzO  
a = temp; < a rZbM  
} else { |PVt}*0"  
data[k] = temp[j--]; M@UVpQwgv  
b = temp[j]; l0]d  
} ;."<m   
} WT3gNNx|  
} ),^eA  
6iezLG 5  
/** PFSLyV*  
* @param data W=}Okq)x9I  
* @param l &R-H"kK?  
* @param i h5%|meZQb  
*/ . 5HQ   
private void insertSort(int[] data, int start, int len) { <!^ [~`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); cSP*f0n,eo  
} y7u^zH6wj  
} > R^@Ww;|q  
} MLVB^<qkeH  
} YrI|gz)  
R""%F#4XJ2  
堆排序: %uESrc-;  
*e.*=$  
package org.rut.util.algorithm.support; ;]D(33) (  
H6kf K5,  
import org.rut.util.algorithm.SortUtil; P1kB>" bR  
0`#(Toe{B  
/** =o dkz}bU  
* @author treeroot KlxN~/gyik  
* @since 2006-2-2 "`tXA  
* @version 1.0 PK6iY7Qp)  
*/ #} ,x @]p  
public class HeapSort implements SortUtil.Sort{ =J'P.  
Qu*1g(el!o  
/* (non-Javadoc) _cI_#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FY0%XW  
*/ $r.U  
public void sort(int[] data) { n[+'OU[  
MaxHeap h=new MaxHeap(); $ACx*e%  
h.init(data); "l~Ci7& !a  
for(int i=0;i h.remove(); |cbd6e{!  
System.arraycopy(h.queue,1,data,0,data.length); ,32xcj}j)r  
} f|3q^wjs  
('k<XOi  
private static class MaxHeap{ 5fjd{Y[k  
8^ep/b&|  
void init(int[] data){ lvSdY(8  
this.queue=new int[data.length+1]; *MM#Z?mP  
for(int i=0;i queue[++size]=data; >=,ua u7  
fixUp(size); F#r#}.B='U  
} T.&7sbE_  
} XJ\hd,R   
3fS}:!sQ  
private int size=0; mX# "+X|  
6Z:YT&,f  
private int[] queue; C0 ) Z6  
C*~aSl7  
public int get() { HD`>-E#  
return queue[1]; F3E[wdT  
} AHh#Fx+K  
a' FN 3  
public void remove() { TRvZ  
SortUtil.swap(queue,1,size--); cgZaPw2 bw  
fixDown(1); D@54QJ<  
} J\co1kO9/  
file://fixdown n@>wwp  
private void fixDown(int k) { ]?l{j  
int j; O12Q8Oj!0  
while ((j = k << 1) <= size) { @"87F{!  
if (j < size %26amp;%26amp; queue[j] j++; *YV S|6bs  
if (queue[k]>queue[j]) file://不用交换 fv'4f$U  
break; 85Y|CN] vQ  
SortUtil.swap(queue,j,k); 0&w0a P`Y  
k = j; }p3b#fAr  
} rzLd"`  
} gSi5u# }J  
private void fixUp(int k) { HMQI&Lh=U  
while (k > 1) { ZW4aY}~)$  
int j = k >> 1; mf$j03tu  
if (queue[j]>queue[k]) YcM;S  
break; +&v\ /  
SortUtil.swap(queue,j,k); U@lV  
k = j; yyl#{Nl@t  
} QJ X/7RA  
} Cnh|D^{s  
,Qc.;4s-  
} 7XAvd-  
IM( u<c$  
} e<+<lj "  
!c(QSf502  
SortUtil: UZxmh sv  
[~%`N*G  
package org.rut.util.algorithm; &w\ I<J`T  
yXfMzG  
import org.rut.util.algorithm.support.BubbleSort; :hqZPajE  
import org.rut.util.algorithm.support.HeapSort; V0i9DK|!  
import org.rut.util.algorithm.support.ImprovedMergeSort; G?)vWM`j  
import org.rut.util.algorithm.support.ImprovedQuickSort; .Ao0;:;(2-  
import org.rut.util.algorithm.support.InsertSort; K b(9)Re  
import org.rut.util.algorithm.support.MergeSort; ';YgG<u  
import org.rut.util.algorithm.support.QuickSort; D'i6",Z>  
import org.rut.util.algorithm.support.SelectionSort; !$xu(D.  
import org.rut.util.algorithm.support.ShellSort; R{}qK r  
:=.*I  
/** !k&)EWP?  
* @author treeroot ~l4f{uOD>]  
* @since 2006-2-2 F8mC?fbK9  
* @version 1.0 Yv\!vW7I  
*/ g`Md80*Zfk  
public class SortUtil { 00<{:  
public final static int INSERT = 1; >M4"|W U_  
public final static int BUBBLE = 2; =4NqjSH  
public final static int SELECTION = 3; L]bVN)JU  
public final static int SHELL = 4; <0j{ $.  
public final static int QUICK = 5; Ol+Kp!ocY  
public final static int IMPROVED_QUICK = 6; pM$ @m]  
public final static int MERGE = 7; @p!Q1-]=  
public final static int IMPROVED_MERGE = 8; /^<en(0=P  
public final static int HEAP = 9; !D:k!  
F @SG((`  
public static void sort(int[] data) { vOT*iax0  
sort(data, IMPROVED_QUICK); JeQ[qQ  
} s-D?)  
private static String[] name={ ([pSVOnIz  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $G";2(-k  
}; gA:TL{X0  
bx;f`8SN  
private static Sort[] impl=new Sort[]{ qu{mqkfN>  
new InsertSort(), J_"3UZ~&  
new BubbleSort(), 3wt  
new SelectionSort(), qo;)X0 N  
new ShellSort(), ~[18q+,  
new QuickSort(), IC~ljy]y_  
new ImprovedQuickSort(), &YX6"S_B  
new MergeSort(), zixE Mi[8  
new ImprovedMergeSort(), L#j/0IHD  
new HeapSort() $h[Yzl  
}; j$P I,`  
TmP8 q  
public static String toString(int algorithm){ x:-`o_Q*i  
return name[algorithm-1]; (V9h2g&8L  
} ixI:@#5wY  
/$`;r2LG  
public static void sort(int[] data, int algorithm) { h}6_ybmZ  
impl[algorithm-1].sort(data); tgN92Q.i6T  
} #5{sglC"|F  
j%xBo:  
public static interface Sort { Bw-s6MS  
public void sort(int[] data); sR79 K1*j  
} 6VR[)T%  
u4"r>e6 _B  
public static void swap(int[] data, int i, int j) { ~ x`7)3  
int temp = data; vInFo.e[4  
data = data[j]; l9Pu&M?5  
data[j] = temp; $9H[3OZPVv  
} jT^!J+?6K+  
} 0xP:9rm  
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