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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。 vE>J@g2#  
插入排序: ]B:g<}5$4  
6;l{9cRgc  
package org.rut.util.algorithm.support; ch 4z{7   
&%>l9~F'~  
import org.rut.util.algorithm.SortUtil; :tedtV ~  
/** 1 [[` ^v  
* @author treeroot >E#| H6gx  
* @since 2006-2-2 \d&j`UVY  
* @version 1.0 ` *&*jdq&i  
*/ a,#f%#J\  
public class InsertSort implements SortUtil.Sort{ I$n 0aR6  
zob^z@2  
/* (non-Javadoc) 5:hajXd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aM9^V MOb  
*/ 9FP6Z[4  
public void sort(int[] data) { ' 6Ybf  
int temp; 1wW8D>f]K  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  PQa {5"  
} KX"?3#U#Fm  
} @r%[e1.  
} o`+6E q0w  
%q;3b fq@N  
} R."<he ;  
{[jcT>.3j  
冒泡排序: 9Y&n$svB  
 fv5'Bl  
package org.rut.util.algorithm.support; M+gQN}BAr  
;'`T  
import org.rut.util.algorithm.SortUtil; up=4B  
Q|@!zMy  
/** %+L:Gm+^g#  
* @author treeroot f h)Cz)  
* @since 2006-2-2 2ELw}9  
* @version 1.0 2_x}wB0P  
*/ X{| 1E85fl  
public class BubbleSort implements SortUtil.Sort{ )r~$N0\D  
pT>[w1Kk^  
/* (non-Javadoc) J|W~\(W6i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8do]5FE  
*/ f` 2W}|(jA  
public void sort(int[] data) { 6Hi3h{  
int temp; \tye:!a?;@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2IFri|;-eb  
if(data[j] SortUtil.swap(data,j,j-1); ^' lx5+-  
} e#:.JbJ:D  
} uH^/\  
} .</d$FM JE  
} R61.!ql%w  
ctTg-J2.  
} u_dTJ, m  
ZK[4n5}  
选择排序: izebQVQO*  
` Xhj7%>  
package org.rut.util.algorithm.support; -N<s =  
ax[-907  
import org.rut.util.algorithm.SortUtil; D?44:'x+-  
SpdQ<]  
/** EFW'D=&h8  
* @author treeroot ^o,P>u!9  
* @since 2006-2-2 Y#{ L}  
* @version 1.0 T\:Vu{|  
*/ rZLTai}`>  
public class SelectionSort implements SortUtil.Sort { |_&vW\  
+XLy Pj  
/* w,SOvbAxX2  
* (non-Javadoc) `{c %d  
* =5 l7{i*`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) btkD<1{g  
*/ E y1mlW  
public void sort(int[] data) { 1&ukKy,[  
int temp; g>12!2}  
for (int i = 0; i < data.length; i++) { #(j'?|2o%  
int lowIndex = i; - K0>^2hh  
for (int j = data.length - 1; j > i; j--) { jutEb@nog  
if (data[j] < data[lowIndex]) { c/DB"_}!a  
lowIndex = j; 0.'$U}#b  
} z2vrV?:  
} OIGu`%~js  
SortUtil.swap(data,i,lowIndex); 8L`J](y  
} ts`c_hH,1'  
} {f((x1{HZx  
gtHWd;1&f  
} v#q7hw=  
-Ob'/d5&  
Shell排序: i^eU!^KF  
z|^:1ov,  
package org.rut.util.algorithm.support; 3,DUT{2  
:aI[ lZ  
import org.rut.util.algorithm.SortUtil; 1Jg&L~Ws"  
y2;uG2IS_g  
/** &m&Z^CA  
* @author treeroot `wj<d>m  
* @since 2006-2-2 KC9_H>  
* @version 1.0 %JeT,{  
*/ ekND>Qjj  
public class ShellSort implements SortUtil.Sort{ 8iaP(*J  
y!&6"l$K]  
/* (non-Javadoc) .aV#W@iyK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Eyv%"+>  
*/ u|&"l  
public void sort(int[] data) { as=Z_a:0N  
for(int i=data.length/2;i>2;i/=2){ 0"o%=i;  
for(int j=0;j insertSort(data,j,i); w[}5qAI5*f  
} Jte:U*2  
} KV0M^B|W  
insertSort(data,0,1); 2kzm(K  
} C ?JcCD2  
XZde}zUWn  
/** piIj t  
* @param data VRQ'sn@  
* @param j [0<N[KZ)  
* @param i T}d% XMXq  
*/ %$}aWzQxll  
private void insertSort(int[] data, int start, int inc) { A:Pp;9wl  
int temp; eLWD?-v%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }G}2Y (  
} %MGbIMpY  
} >Vc;s !R  
} 4WU%K`jnXb  
 b)/,  
} aqJ>l}{  
mX66}s}#  
快速排序: 6..G/,TB  
0aj4.H*%  
package org.rut.util.algorithm.support; gg $/  
TR}ztf[e  
import org.rut.util.algorithm.SortUtil; mucKmb/  
[hC-} 9  
/** "I+71Ce  
* @author treeroot }TE4)vXs  
* @since 2006-2-2 7vO3+lT/Y;  
* @version 1.0 S bI7<_  
*/ E>>@X^ =  
public class QuickSort implements SortUtil.Sort{ LgFF+z  
M9so3L<N0  
/* (non-Javadoc) $fZVh%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w6FtDl$  
*/ P(AcDG6K  
public void sort(int[] data) { |rW,:&;  
quickSort(data,0,data.length-1); U?BuV  
} =E$Hq4I  
private void quickSort(int[] data,int i,int j){ Ot,eAiaX  
int pivotIndex=(i+j)/2; ukNB#2 "  
file://swap .rpKSf.  
SortUtil.swap(data,pivotIndex,j); |uL"/cMW7  
:+Ti^FF`w  
int k=partition(data,i-1,j,data[j]); r0jhIE#  
SortUtil.swap(data,k,j); rUgTJx&ds  
if((k-i)>1) quickSort(data,i,k-1); T7+_/ Qh  
if((j-k)>1) quickSort(data,k+1,j); $}_a`~u  
86+nFk  
} bz$)@gLc  
/** N;N,5rxV  
* @param data Eci,];S7  
* @param i +'aG&^k4  
* @param j G_OLUuK?C  
* @return mtfEK3?2*  
*/ NABVU0}   
private int partition(int[] data, int l, int r,int pivot) { nz-( 8{ae  
do{ @px 4[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); wX?< o  
SortUtil.swap(data,l,r); &\Kp_AR  
} 3jx5Lou)&  
while(l SortUtil.swap(data,l,r); Z'/sZ3Q}  
return l; RC{|:@]8  
} y*K]z  
.zDm{_'  
} |Iq#Q3w  
 3"B$M  
改进后的快速排序: ]CL t Km  
XNZW J  
package org.rut.util.algorithm.support; s,~)5nL  
>2kjd  
import org.rut.util.algorithm.SortUtil; Owt|vceT  
zNg8Oq&  
/** v>ygr8+C,  
* @author treeroot [&_c.ti  
* @since 2006-2-2 #ArMX3^+w7  
* @version 1.0 d4(!9O.\  
*/ w+ MCOAB  
public class ImprovedQuickSort implements SortUtil.Sort { !u0|{6U  
(zv)cw%  
private static int MAX_STACK_SIZE=4096; (>.+tq}  
private static int THRESHOLD=10; ~m0l_:SF  
/* (non-Javadoc) pXL@&]U+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b Ag>;e(  
*/ j=>:{`*c  
public void sort(int[] data) { /U1&#"P  
int[] stack=new int[MAX_STACK_SIZE]; w]-,X`  
H<YhO&D*u  
int top=-1; Ic!8$NhRS  
int pivot; L"Vi:zdp  
int pivotIndex,l,r; T1Gy_ G/  
;Nfd  
stack[++top]=0; fG{ 9doUD  
stack[++top]=data.length-1; d]bM,`K* 6  
H6fR6Kr4j  
while(top>0){ XMJEIG  
int j=stack[top--]; sD_"  
int i=stack[top--]; OsSGVk #Qh  
gJkvH[hDY  
pivotIndex=(i+j)/2; X.YMb .\<  
pivot=data[pivotIndex]; L~Hgf/%5  
kuEB  
SortUtil.swap(data,pivotIndex,j); >wPMJ> 2  
0/Q"~H?%  
file://partition X!'nfN  
l=i-1; Adyv>T9  
r=j; "~-Y 'O  
do{ $d[ -feU  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e1d);m$  
SortUtil.swap(data,l,r); !X 8<;e}2  
} ;R#:? r;t  
while(l SortUtil.swap(data,l,r); Q|3SYJf  
SortUtil.swap(data,l,j); @-g'BvS  
k-~HUC.A.  
if((l-i)>THRESHOLD){ |izf|*e  
stack[++top]=i; LEM^8G]O  
stack[++top]=l-1; 0nX.%2p#Je  
} ;?-`n4B&  
if((j-l)>THRESHOLD){ VOmWRy"L  
stack[++top]=l+1; [p 6#fG *  
stack[++top]=j; zSU06Y  
} }zK/43Vx  
ohy?l  
} jT6zpi~]E  
file://new InsertSort().sort(data); 9S _N*wC.  
insertSort(data); J&<uP)<  
}  4hzS  
/** o{QU?H5h  
* @param data Ku W$  
*/ `/1Zy}cD  
private void insertSort(int[] data) { ^KK9T5H  
int temp; Dq~PxcnI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HDTdOG)  
} g;M\4o  
} *`(/wE2v]  
} A \6Q*VhK  
$1(FN+ M b  
} wd=xs7Dz<p  
l:Y$A$W]>  
归并排序: [;]@PKW?w  
JN{xh0*  
package org.rut.util.algorithm.support; _tGR:E  
e1k\:]6  
import org.rut.util.algorithm.SortUtil; cuw3}4m%  
OR\-%JX/5  
/** wG&+*,}  
* @author treeroot HOb-q|w  
* @since 2006-2-2 H=7z d|W  
* @version 1.0 o`@B*, @  
*/ JW5SBt>  
public class MergeSort implements SortUtil.Sort{ w|1Gb[  
ElEa*70~g  
/* (non-Javadoc) hVfiF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v{H3DgyG  
*/ e$wbYByW  
public void sort(int[] data) { X> *o\   
int[] temp=new int[data.length]; F! |?S:X  
mergeSort(data,temp,0,data.length-1); kP6P/F|RcZ  
} kZlRS^6  
>v+ia%o  
private void mergeSort(int[] data,int[] temp,int l,int r){ \sy;ca)[6g  
int mid=(l+r)/2; Z~Mq5#3F  
if(l==r) return ; Q~'a1R  
mergeSort(data,temp,l,mid); z~g7O4#  
mergeSort(data,temp,mid+1,r); ,8F?v~C  
for(int i=l;i<=r;i++){ >%"Q]p  
temp=data; vd5"phn 3  
} kRk=8^."By  
int i1=l; zn4Yo  
int i2=mid+1; t?-7Z6  
for(int cur=l;cur<=r;cur++){ j=^b'dyL  
if(i1==mid+1) J6!t"eB+  
data[cur]=temp[i2++]; ;,z^!bD  
else if(i2>r) g>[|/z P  
data[cur]=temp[i1++]; W biUz2)  
else if(temp[i1] data[cur]=temp[i1++]; UeRx ^  
else Xcq 9*!%o  
data[cur]=temp[i2++]; -9S.G  
} )-3!-1  
} 1m/=MET]  
by {G{M`X  
} ,{C(<1  
GXEOgf#i  
改进后的归并排序: /WDz;,X  
AJ;Y Nb  
package org.rut.util.algorithm.support; Y[Gw<1F_  
RRD\V3C84  
import org.rut.util.algorithm.SortUtil; ^"w.v' sL  
;z9(  
/** NVnKgGlHgd  
* @author treeroot /HNZwbh]uJ  
* @since 2006-2-2 "9[K  
* @version 1.0 >4d2IO1\  
*/ MwxfTH"wi  
public class ImprovedMergeSort implements SortUtil.Sort { z]k=sk  
Ne]/ sQ0  
private static final int THRESHOLD = 10; ; y#6Nx,:  
6TE R Q  
/* yG0Wr=/<?  
* (non-Javadoc) mI=^7 'Mk  
* b'$j* N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;8~`fK  
*/ XR^VRn6O  
public void sort(int[] data) { A a2*f[  
int[] temp=new int[data.length]; r +] J {k  
mergeSort(data,temp,0,data.length-1); @o+T<}kWX  
} SnbH`\U"  
dXh@E 7  
private void mergeSort(int[] data, int[] temp, int l, int r) { 1Tn!.E *  
int i, j, k; E<3hy  
int mid = (l + r) / 2; 3zb;q@JV  
if (l == r) y+RT[*bX5o  
return; VI%879Z\e  
if ((mid - l) >= THRESHOLD) /Q"nQSG  
mergeSort(data, temp, l, mid); M* W=v  
else p[e|N;W8A  
insertSort(data, l, mid - l + 1); +w/Ax[K  
if ((r - mid) > THRESHOLD) 'f`~"@  
mergeSort(data, temp, mid + 1, r); -[#Mx}%  
else L%a ni}V  
insertSort(data, mid + 1, r - mid); tg~&kaz  
66=6;77  
for (i = l; i <= mid; i++) { ( $3j  
temp = data; 'uUp1+  
} v@k62@;  
for (j = 1; j <= r - mid; j++) { ~?vm97l  
temp[r - j + 1] = data[j + mid]; :~^ec|tp  
} qy@gW@IU  
int a = temp[l]; DR9M8E  
int b = temp[r]; 1!\!3xaV  
for (i = l, j = r, k = l; k <= r; k++) { )J_!ZpMC  
if (a < b) { rsf A.o  
data[k] = temp[i++]; K0]'v>AWr  
a = temp; w\;=3C`  
} else { ?ZSG4La\  
data[k] = temp[j--]; &a8#qv"l  
b = temp[j]; I TJ>[c]x  
} `sN3iD!@R  
}  ew4IAF  
} @hm %0L  
TE*$NxQ 2  
/** 0+8ThZ?n  
* @param data %_1~z[Dv  
* @param l /-$`GT?l  
* @param i Fm-W@  
*/ 3h"; 2  
private void insertSort(int[] data, int start, int len) { 1 X2oz  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C[r YVa .  
} Y[T;j p(k  
} Ii*v(`2b  
} )?pin|_x  
} hzPx8sO  
5vY h~|  
堆排序: %>i7A?L  
mo#4jtCE  
package org.rut.util.algorithm.support; e=Kv[R'(M  
c6s(f  
import org.rut.util.algorithm.SortUtil; c0<Y017sG  
`Dh%c%j)  
/** N>Y`>5  
* @author treeroot GU'5`Yzd9  
* @since 2006-2-2 f\~e&`PV  
* @version 1.0 v5w I?HE  
*/ l4F4o6:]n  
public class HeapSort implements SortUtil.Sort{ =Gd[Qn83.%  
*8/Q_w  
/* (non-Javadoc) 2{p`"xX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p/lMv\`5  
*/ j Xi<ZJ  
public void sort(int[] data) { ynM{hN.+H  
MaxHeap h=new MaxHeap(); o^&; `XOd  
h.init(data); N,'JQch},8  
for(int i=0;i h.remove(); (L|SE4  
System.arraycopy(h.queue,1,data,0,data.length); [X^JV/R  
} h%+8}uywZ  
 R76'1o  
private static class MaxHeap{ <$Uj ~jN  
:`3b|u=KZ  
void init(int[] data){ }jiqUBn%  
this.queue=new int[data.length+1]; ADv a@P  
for(int i=0;i queue[++size]=data; 6{azzk8  
fixUp(size); 7@EYF  
} Yc?taL)  
} ,l; &Tb=k  
(G PJ=r  
private int size=0; %/etoK  
|,dMF2ADc  
private int[] queue; tt J,rM  
bHS2;K~  
public int get() { K!I]/0L  
return queue[1]; `y YgL@Zt  
} Oku4EJFJ  
m3_e]v3{o  
public void remove() { P603P  
SortUtil.swap(queue,1,size--); >+vWtO 2  
fixDown(1); :1Fm~'  
} B"KsYB79t  
file://fixdown *$# r%  
private void fixDown(int k) { 9d[0i#`:q  
int j; kP;:s  
while ((j = k << 1) <= size) { (= !_ 5l  
if (j < size %26amp;%26amp; queue[j] j++; XZ|"7as  
if (queue[k]>queue[j]) file://不用交换 n#J$=@  
break; crgYr$@s?  
SortUtil.swap(queue,j,k); [b#jw,7  
k = j;  b 1[U 9  
} 5)$U<^uy  
} 'R]Z9h  
private void fixUp(int k) { M5ZWcD.1  
while (k > 1) { q`$QroZT"  
int j = k >> 1; xo@N~  
if (queue[j]>queue[k]) %m+MEh"b5  
break; m\Tq0cT$  
SortUtil.swap(queue,j,k); $d8A_CUU  
k = j; n;Iey[7_E`  
} ['s_qCA[  
} mH{cGu?  
3Vw%[+lY9  
} Plq [Ml9  
y'@l,MN{  
} *?K` T^LS  
JyB>,t)  
SortUtil: bLV@Ts  
4uftx1o   
package org.rut.util.algorithm; t&P5Zw*B  
_)_XO92~  
import org.rut.util.algorithm.support.BubbleSort; l?FNYvL  
import org.rut.util.algorithm.support.HeapSort; C>K/C!5?  
import org.rut.util.algorithm.support.ImprovedMergeSort; _ZS<zQ'  
import org.rut.util.algorithm.support.ImprovedQuickSort; X!2|_  
import org.rut.util.algorithm.support.InsertSort; dhVwS$O )  
import org.rut.util.algorithm.support.MergeSort; <}mT[;:"  
import org.rut.util.algorithm.support.QuickSort; @tj0Ir v  
import org.rut.util.algorithm.support.SelectionSort; +] 5a(/m.~  
import org.rut.util.algorithm.support.ShellSort; _r8AO>  
Y}?@Pm drz  
/** E,6E-9  
* @author treeroot rk. UW  
* @since 2006-2-2 \FKIEg+(2  
* @version 1.0 6op\g].P  
*/ XdS<51 C  
public class SortUtil { $1dI  
public final static int INSERT = 1; |Q I3H]T7  
public final static int BUBBLE = 2;  +;!w;t  
public final static int SELECTION = 3; WX=+\`NyJ(  
public final static int SHELL = 4; /uyQ>Y*-\Y  
public final static int QUICK = 5; 4Dd9cG,lN  
public final static int IMPROVED_QUICK = 6; RsOK5XnQn  
public final static int MERGE = 7; l:|Fs=\  
public final static int IMPROVED_MERGE = 8; H~~(v52wD  
public final static int HEAP = 9; yv:NH|,/y  
@<6-uk3S  
public static void sort(int[] data) { X_YD[  
sort(data, IMPROVED_QUICK); V3+%KkN  
} \)#3S $L~  
private static String[] name={ &qpA<F@7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3+$O#>  
}; 8/F2V?iT  
R|M:6]}   
private static Sort[] impl=new Sort[]{ nWl0R=  
new InsertSort(), $U0(%lIU  
new BubbleSort(), MnS"M[y3  
new SelectionSort(), (,TO|  
new ShellSort(), f7W=x6Z4  
new QuickSort(), 3PEs$m9e  
new ImprovedQuickSort(), }GC{~ SZ4  
new MergeSort(), aLq;a  
new ImprovedMergeSort(), 0=5i\*5 p  
new HeapSort() B~ez>/H^  
}; gU%GM  
2?ednMoE  
public static String toString(int algorithm){ >lj3MNSH  
return name[algorithm-1]; v6n(<0:  
} T*ic?!  
c"$_V[m  
public static void sort(int[] data, int algorithm) { -)Vj08aP  
impl[algorithm-1].sort(data); [< `+9R  
} A^Zs?<C-  
&p%ctg  
public static interface Sort { K@,VR3y /  
public void sort(int[] data); WE"'3u^k  
} .=FJ5?:4i%  
#Nd+X@j  
public static void swap(int[] data, int i, int j) { 2X]\:<[4  
int temp = data; B>mQ\Q  
data = data[j]; !I Nr  
data[j] = temp; pqr" x2=.  
} 5a~1RL  
} I|5OCTu  
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