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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。 ?t$sju(\  
插入排序: St-:+=V_  
l %=yT6  
package org.rut.util.algorithm.support; ePa:_?(  
CTp~bGIv!=  
import org.rut.util.algorithm.SortUtil; N{46DS  
/** -20o%t  
* @author treeroot p<Wb^BE  
* @since 2006-2-2 d*,% -Io  
* @version 1.0 n9]^v-]K  
*/ .FK[Y?ci#  
public class InsertSort implements SortUtil.Sort{ J?)vsnD.H  
HAEgR  
/* (non-Javadoc) !I-+wc{ss  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F#7ZR*ZB1  
*/ jy(,^B,]  
public void sort(int[] data) { B~^MhX +j  
int temp; y GT"k,a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J0a]Wz%  
} Z2)f$ c  
} Q2cF++Q1  
} B)O=wx  
NoO>CjeFb  
} l " pCxA  
iC?s`c0B  
冒泡排序: P0~3<h?U8  
<Q/^[  
package org.rut.util.algorithm.support; 5u T 9ssC  
5#g<L ~  
import org.rut.util.algorithm.SortUtil; fO[X<|9  
`J[(Dx'y=t  
/** G]E$U]=9r:  
* @author treeroot V.)y7B  
* @since 2006-2-2 @;qC % +^  
* @version 1.0 (9*s:)zD-  
*/ @ \J RxJ  
public class BubbleSort implements SortUtil.Sort{ /%po@Pm#I  
Wy@Z)z?  
/* (non-Javadoc) q~p,A>K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bxyEn'vNvQ  
*/ tPPnW  
public void sort(int[] data) { $_k'!/5  
int temp; t>7t4>X  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "Ol;0>$  
if(data[j] SortUtil.swap(data,j,j-1); %1gJOV  
} bW;0E%_  
} }oYR.UH  
} N[^%|  
} 9Re605x Q6  
d8<Lk9H9R  
} bv;&oc:r  
FH)bE#4  
选择排序: RKdf1C  
E"!9WF(2t5  
package org.rut.util.algorithm.support; ?=jmyDXH!  
b5Rjn1@  
import org.rut.util.algorithm.SortUtil; $Rv}L'L  
?Pw# !t  
/** V[wEn9   
* @author treeroot H1| -f]!  
* @since 2006-2-2 *U.$=4Az  
* @version 1.0 bv9\Jp0c  
*/ jec03wH_0  
public class SelectionSort implements SortUtil.Sort { ]/p0j$Tq$  
M$1+,[^f  
/* }U7>_b2  
* (non-Javadoc) qnW5I_]  
* l<PGUm:_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fly@"W4a  
*/ #j d?ocoY  
public void sort(int[] data) { ,a?)#X  
int temp; _Jk-nZgn  
for (int i = 0; i < data.length; i++) { BS;rit:  
int lowIndex = i; "sz LTC]*6  
for (int j = data.length - 1; j > i; j--) { Yk(OVl T  
if (data[j] < data[lowIndex]) { Z%Y=Lx  
lowIndex = j; L'6_~I  
} TUJ]u2J8?  
} W2|*:<Jt  
SortUtil.swap(data,i,lowIndex); CWE jX-  
} eM/|"^%  
} \cPGyeq  
`PSr64h:D  
} Y((z9-`  
*u>2"!+Ob  
Shell排序: eG|e1tK+  
-yg9ug  
package org.rut.util.algorithm.support; _E)xR  
\9Itu(<f  
import org.rut.util.algorithm.SortUtil; 9V?MJZ@aG  
AS|gi!OVA  
/** P0RM df  
* @author treeroot / Zz2=gDY  
* @since 2006-2-2 $Pzvv`f*  
* @version 1.0 wC!(STu  
*/ a: iIfdd4'  
public class ShellSort implements SortUtil.Sort{ hOfd<k\A  
+hY/4Tx<  
/* (non-Javadoc) gwThhwR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :KgLjhj|)  
*/ AbZ:AJ(  
public void sort(int[] data) { X^_,`H@  
for(int i=data.length/2;i>2;i/=2){ dLD"Cx  
for(int j=0;j insertSort(data,j,i); ?Y ) Qy,  
} )7q;F m_/  
} :eQ@I+  
insertSort(data,0,1); lADi  
} rMe` HM@  
(S5'iks x  
/** &BG^:4b  
* @param data H\8i9RI  
* @param j (oq(-Wv  
* @param i @WhcY*R2  
*/ akm)X0!-}  
private void insertSort(int[] data, int start, int inc) { xVfJ ]Y  
int temp; QlJCdCSy  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "uGJ\  
} J9/9k  
} s]L`&fY]O  
} ?U|~h1   
}-zx4<4BH  
} YH':cze  
!\ y_ik  
快速排序: C1p |.L?m  
v&H&+:<  
package org.rut.util.algorithm.support; fQ#mx.|8y  
&^9f)xb  
import org.rut.util.algorithm.SortUtil; s<:"rw`  
SnQ$  
/** d#ld*\|  
* @author treeroot 8k_,Hni  
* @since 2006-2-2 S wC,=S  
* @version 1.0 *sAoYx  
*/ xhUQ.(S`r6  
public class QuickSort implements SortUtil.Sort{ 8Y5* 1E*  
rRT9)wDa  
/* (non-Javadoc) b\=0[kBQw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;a{ Dr  
*/ `*}#Bks!  
public void sort(int[] data) { )KXLL;]  
quickSort(data,0,data.length-1); +]uy  
} !G\1$"T$  
private void quickSort(int[] data,int i,int j){ 8"oS1W  
int pivotIndex=(i+j)/2; w$Dp m.0(  
file://swap  V}8J&(\  
SortUtil.swap(data,pivotIndex,j); >/e#Z h  
4yRT!k}o  
int k=partition(data,i-1,j,data[j]); Ba`]Sm=  
SortUtil.swap(data,k,j); qf)]!w U9  
if((k-i)>1) quickSort(data,i,k-1); 9!bD|-6y  
if((j-k)>1) quickSort(data,k+1,j); ((.PPOdJV  
gl]{mUZz}  
} %*|XN*iXC  
/** yc%AkhX*  
* @param data gP/]05$e  
* @param i IFG`  
* @param j *ZN"+ wf\  
* @return E_ mgYW*5  
*/ CXUNdB  
private int partition(int[] data, int l, int r,int pivot) { .WyI.Y1  
do{ y;<jE.7>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z]9 )1&  
SortUtil.swap(data,l,r); guwnYS  
} +BzKO >  
while(l SortUtil.swap(data,l,r); =@3Qsd  
return l; 9oc[}k-M  
} F>^k<E?,C  
ShCAkaj_  
} c (\-7*En  
N66jFRA;x  
改进后的快速排序: v+Mt/8  
%eD&2$q*  
package org.rut.util.algorithm.support; i}HF  
R?l>Vr  
import org.rut.util.algorithm.SortUtil; {jk {K6 }  
7RdL/21K  
/** T*YdGIFO  
* @author treeroot @Chj0wWZ>  
* @since 2006-2-2 c?IIaj !  
* @version 1.0 !>>$'.nb@~  
*/ X_%78$N-a`  
public class ImprovedQuickSort implements SortUtil.Sort { o^7NZ]m  
Ui?t@.  
private static int MAX_STACK_SIZE=4096; w5~<jw%>  
private static int THRESHOLD=10; (q +Q.Q  
/* (non-Javadoc) k)S7SbQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !3HMGzt  
*/ v t(kL(}v  
public void sort(int[] data) { U6M4}q(N]  
int[] stack=new int[MAX_STACK_SIZE]; eQ C`e#%  
_k ~bH\(  
int top=-1; Q%t8cJ L  
int pivot; ?dxhe7m  
int pivotIndex,l,r; [k1N`K(M  
[dt1%DD`M  
stack[++top]=0; DVpqm6$ Q  
stack[++top]=data.length-1; y#x]?%m  
n'M}6XUw  
while(top>0){ :+[q `  
int j=stack[top--]; 9KAXc(-  
int i=stack[top--]; 2RM0ca _F  
:SYg)|s  
pivotIndex=(i+j)/2; @8/-^Rh*  
pivot=data[pivotIndex]; 0|4XV{\qT$  
)ZiJl5l@  
SortUtil.swap(data,pivotIndex,j); {H0B"i  
 wl9E  
file://partition cT.1oaAM0  
l=i-1; 6J&L5E  
r=j; Gia_B6*Y[  
do{ oq0G@  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0eUsvzz 15  
SortUtil.swap(data,l,r); }1(F~6RH  
} L\n_q6n  
while(l SortUtil.swap(data,l,r); ~~yo& ]  
SortUtil.swap(data,l,j); ;itz` 9T  
qU=$ 0M  
if((l-i)>THRESHOLD){ F;MFw2G  
stack[++top]=i; M+nz~,![  
stack[++top]=l-1; >TtkG|/U-T  
} -y$|EOi?  
if((j-l)>THRESHOLD){ tWc!!Hf2j  
stack[++top]=l+1; @-u/('vpB  
stack[++top]=j; (wbG0lu  
} O<o_MZN  
&4B N9`|:  
} d3Y#_!)  
file://new InsertSort().sort(data); E5 Y92vu  
insertSort(data); }0f[x ?V  
} DmD*,[rD  
/** =_v_#;h&  
* @param data pT[C[h:  
*/ \9D '7/$I,  
private void insertSort(int[] data) { O{%y `|m  
int temp; dq|z;,`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )8e_<^M  
} 8 Z#)Xb4  
} SJ+.i u/  
} .!=g  
1Rwk}wL  
} n]_8!NU  
<K 4zH<y  
归并排序: o1kLT@VCl  
j7uiZU;3Rx  
package org.rut.util.algorithm.support; T_I"Tsv  
SD JAk&Z}R  
import org.rut.util.algorithm.SortUtil; 4Jo:^JV  
?b2%\p`"  
/** K4l,YR;r  
* @author treeroot t;E-9`N  
* @since 2006-2-2 Af*^u|#  
* @version 1.0 u^V`Ucd"R  
*/ qW7S<ouh  
public class MergeSort implements SortUtil.Sort{ @gs Kb* ,  
sFB; /*C  
/* (non-Javadoc) zf2]|]*xz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \.Q"fd?a_D  
*/ a"hlPJlG  
public void sort(int[] data) { WO_cT26Y  
int[] temp=new int[data.length]; &a-:ZA@  
mergeSort(data,temp,0,data.length-1); 6)DYQ^4y  
} Z mYp!B_~  
9h~>7VeZ)  
private void mergeSort(int[] data,int[] temp,int l,int r){ A!@D }n  
int mid=(l+r)/2; P3@[x  
if(l==r) return ; OGh b Ha  
mergeSort(data,temp,l,mid); v>0xHQD*<M  
mergeSort(data,temp,mid+1,r); TX8,+s+  
for(int i=l;i<=r;i++){ @\[&_DZ  
temp=data; gxL5%:@  
} HiVF<tN  
int i1=l; | \Qr cf  
int i2=mid+1; :2  
for(int cur=l;cur<=r;cur++){ Po=)jkW  
if(i1==mid+1) 0y|}}92:  
data[cur]=temp[i2++]; Vk>aU3\c  
else if(i2>r) 9j9A'Y9(  
data[cur]=temp[i1++]; rWSw1(sAA  
else if(temp[i1] data[cur]=temp[i1++]; VU)ywIs  
else >#c]rk:  
data[cur]=temp[i2++]; ,/JrQWgD  
} xae}8E   
} RI cA)I.  
zneK)C8&q3  
} GQ)hZt0  
7kG>s9O  
改进后的归并排序: `<+D<x)(3  
hwkol W  
package org.rut.util.algorithm.support; UGr7,+N&w  
voV=}.(p  
import org.rut.util.algorithm.SortUtil; js7J#b7  
ILTd*f  
/** I)DLnnQQ  
* @author treeroot O,:ent|  
* @since 2006-2-2 o_os;  
* @version 1.0 &|Z:8]'P  
*/ T4qbyui{  
public class ImprovedMergeSort implements SortUtil.Sort { ugucq},[  
)Q(tryiSi  
private static final int THRESHOLD = 10; Uj6R?E{Jt  
F]SexP4:A  
/* E}\^GNT  
* (non-Javadoc) QT\S>}  
* sStaT R{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $eRxCX?b2  
*/ =^=9z'u"=  
public void sort(int[] data) { xdp{y =,[  
int[] temp=new int[data.length]; +<@7x16  
mergeSort(data,temp,0,data.length-1); %E~4Ur  
} 3(6i6 vV  
PS(9?rX#+  
private void mergeSort(int[] data, int[] temp, int l, int r) { 0Q%'vBX\`  
int i, j, k; In=3#u ,M  
int mid = (l + r) / 2; ZXHG2@E)  
if (l == r) j:$2 ,?|5  
return; xzIs,i}U  
if ((mid - l) >= THRESHOLD) F!j@b!J8  
mergeSort(data, temp, l, mid); r 'pFHX  
else D OPOzh  
insertSort(data, l, mid - l + 1); kw|bEL9!u  
if ((r - mid) > THRESHOLD) <hQ@]2w$  
mergeSort(data, temp, mid + 1, r); \L6U}ZQ2V  
else uZ%b6+(  
insertSort(data, mid + 1, r - mid); 6"eGd"  
Og"50-  
for (i = l; i <= mid; i++) { ObMsncn  
temp = data; #y}@FG  
} #j iQa"  
for (j = 1; j <= r - mid; j++) { c3i|q@ k  
temp[r - j + 1] = data[j + mid]; e +4p__TmZ  
} ^/mQo`[G  
int a = temp[l]; LQNu]2  
int b = temp[r]; m7^a4  
for (i = l, j = r, k = l; k <= r; k++) { g|e^}voRM  
if (a < b) { `=b*g24z[N  
data[k] = temp[i++]; NZ9`8&93  
a = temp; J'^BxN&  
} else { SM! [ yC  
data[k] = temp[j--]; F)5QpDmqb  
b = temp[j]; 1H-R-NNJ:  
} RYS]b[-xZz  
} (!DH'2I[  
} 9v 0.]  
fC]+C(*d  
/** @MAk/mb&  
* @param data (Qq! u  
* @param l oQWS$\Rr.  
* @param i `k _5Pz\  
*/ DV*8Mkzg  
private void insertSort(int[] data, int start, int len) { Nr3td`;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %v : a  
} pRUN [[L  
} c{rX7+bN  
} zO9|s}J8q  
} WO^sm Ck  
./J.OU1  
堆排序: Y\sLwLLlG  
~}z p}Pt  
package org.rut.util.algorithm.support; w0^(jMQe^  
*G>V`||RW  
import org.rut.util.algorithm.SortUtil; Qf7]t-Kp  
<74q]C  
/** =@gH$Q_1  
* @author treeroot ?VS {,"X  
* @since 2006-2-2 wC'KI8-  
* @version 1.0 Z UAWSJ,s  
*/ sB-c'`,w`  
public class HeapSort implements SortUtil.Sort{ 0ydAdgD  
eey <:n/Z  
/* (non-Javadoc) yTkYPx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bN<c5  
*/ Nd^9.6,JU  
public void sort(int[] data) { '1=/G7g  
MaxHeap h=new MaxHeap(); 0f;L!.eP  
h.init(data);  @*%Q,$  
for(int i=0;i h.remove(); jr" yIC_  
System.arraycopy(h.queue,1,data,0,data.length); <s]K~ Vo  
} ,^:Zf|V  
Xdq2.:\  
private static class MaxHeap{ T1\Xz-1  
}_@cqx:n^  
void init(int[] data){  6:ZqS~-  
this.queue=new int[data.length+1]; #}:VZ2Z  
for(int i=0;i queue[++size]=data; "g>uNtt~  
fixUp(size); ( F0.lDZ  
} sjWhtd[fgG  
} 2"yzrwZ:  
D#W{:_f  
private int size=0; n_.2B$JD  
8[(c'rl|)|  
private int[] queue; UFouIS#L  
pb_mW;JVu  
public int get() { q|=tt(}G  
return queue[1]; %zb7M%dC6`  
} &=X1kQG  
QbxjfW"/+  
public void remove() { 3vQ?vS|2  
SortUtil.swap(queue,1,size--); hY-;Wfg  
fixDown(1); |KplbU0iC  
} TjgX' j  
file://fixdown cS4e}\q,  
private void fixDown(int k) { ogip#$A}3  
int j; o=q N+-N  
while ((j = k << 1) <= size) { {~b]6}O  
if (j < size %26amp;%26amp; queue[j] j++; %q2dpzNW  
if (queue[k]>queue[j]) file://不用交换 qqS-0U2  
break; hKt AvTg  
SortUtil.swap(queue,j,k); \dbpC Z  
k = j; Vu^J'>X  
} +qD4`aI   
} o PR^Z pt  
private void fixUp(int k) { H8P il H  
while (k > 1) { rAn''X6H  
int j = k >> 1; r_FW)Fu^  
if (queue[j]>queue[k]) 9]1-J5iO  
break; RTHdL  
SortUtil.swap(queue,j,k); &zb_8y,  
k = j; +_ K7x5g  
} F{bET  
} ,#gA(B#  
&,{cm^*  
} #++MoW}'g  
u9N?B* &{  
} O 4l[4,`  
_d A-{  
SortUtil: =WJ*$j(  
az F"tke  
package org.rut.util.algorithm; .7+_ubj&,  
wV W+~DJ  
import org.rut.util.algorithm.support.BubbleSort; (aiE!c  
import org.rut.util.algorithm.support.HeapSort; 42U3>  
import org.rut.util.algorithm.support.ImprovedMergeSort; W%Br%VQJ  
import org.rut.util.algorithm.support.ImprovedQuickSort; frc>0\  
import org.rut.util.algorithm.support.InsertSort; E88_15'3D  
import org.rut.util.algorithm.support.MergeSort; e_\4(4x  
import org.rut.util.algorithm.support.QuickSort; 3/}=x<ui  
import org.rut.util.algorithm.support.SelectionSort; L a0H  
import org.rut.util.algorithm.support.ShellSort; NZi5rX N  
- FA#hUK$  
/** qB<D'h7  
* @author treeroot WTY{sq\' o  
* @since 2006-2-2 1,,o_e\nn3  
* @version 1.0 o+/x8:   
*/ TcO@q ]+S  
public class SortUtil { k{y@&QNj  
public final static int INSERT = 1; OHp 121  
public final static int BUBBLE = 2; ra_`NsKF}  
public final static int SELECTION = 3; fVb&=%e  
public final static int SHELL = 4; g9GE0DbT`  
public final static int QUICK = 5; ~Jmn?9 3  
public final static int IMPROVED_QUICK = 6; I&Yu=v/_  
public final static int MERGE = 7; 3::DURkjf  
public final static int IMPROVED_MERGE = 8; w/h?, L|  
public final static int HEAP = 9; } Yj ic4?  
xJ^Gtq Um  
public static void sort(int[] data) { SobK<6  
sort(data, IMPROVED_QUICK); Fg5>CppH  
} {B\ar+9>  
private static String[] name={ )q&uvfQ1(  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?Xh=rx_  
}; p`33`25  
S7E:&E&  
private static Sort[] impl=new Sort[]{ t+q:8HNh  
new InsertSort(), Q4CxtY  
new BubbleSort(), q:J,xC_sF(  
new SelectionSort(), -UUP hGC  
new ShellSort(), @xSS`&b  
new QuickSort(), kTc'k  
new ImprovedQuickSort(), n8iejdA'  
new MergeSort(), *oZBv4Vh   
new ImprovedMergeSort(), _d %H;<_  
new HeapSort() lwQI 9U[O2  
}; 5a5 I+* c  
2+sNt6B2  
public static String toString(int algorithm){ w KXKc\r  
return name[algorithm-1]; KosAc'/ M  
} vT\`0di~  
;w}ZI<ou  
public static void sort(int[] data, int algorithm) { K}&|lCsb  
impl[algorithm-1].sort(data); \Ao M'+  
} iNd 8M V  
}y x'U 3  
public static interface Sort { 0K@s_C=n#  
public void sort(int[] data); P]j{JL/g&  
} M:Xswwq  
iN<&  
public static void swap(int[] data, int i, int j) { 7evE;KL  
int temp = data; y5BNHweaRb  
data = data[j]; 8iqx*8}  
data[j] = temp; o_b j@X  
} /DQoM@X  
} 9_ KUUA  
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