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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。 4D4j7  
插入排序: >kVz49j  
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package org.rut.util.algorithm.support; DvvK^+-~  
onzxx4bax  
import org.rut.util.algorithm.SortUtil; 4!?eRY  
/** wmLs/:~  
* @author treeroot VI86KJu  
* @since 2006-2-2 ^ Ze=uP  
* @version 1.0 4tBYR9|  
*/ H.MI5O(Q  
public class InsertSort implements SortUtil.Sort{ "chDg(jMZ  
e9 B064  
/* (non-Javadoc) iYy1!\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S,he6zS  
*/ {`@G+JV~Jw  
public void sort(int[] data) { |CyE5i0  
int temp; I!K6o.|1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3!]rmZ-W  
} (GfZ*  
} =Xr.'(U  
} KZf+MSq? B  
Q~Wqy~tS  
} s$j,9uRr  
InI$:kJ  
冒泡排序: ww1[rCh\+  
:V||c5B+  
package org.rut.util.algorithm.support; d2$IH#~9B  
OneY_<*a<  
import org.rut.util.algorithm.SortUtil; Q=$2c[Uk  
K}Qa~_  
/** vFmZ<C' )  
* @author treeroot 3bI9Zt#J%&  
* @since 2006-2-2 es7=%!0  
* @version 1.0 nxFBID  
*/ eHUOU>&P]  
public class BubbleSort implements SortUtil.Sort{ kAUymds;O  
f!X[c?Xy"  
/* (non-Javadoc) ~P-mC@C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CrTw@AW9)  
*/ p!%pP}I  
public void sort(int[] data) { G3T]`Atf  
int temp; |[8Th4*n  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9\(| D#  
if(data[j] SortUtil.swap(data,j,j-1); Q3?F(ER@  
} p]c%f 2E>d  
} ;O,jUiQ  
} hhvyf^o   
} 4*;MJ[|  
K|=A:  
} I&5!=kR  
m1AJ{cs  
选择排序: {)<v&'*c~  
Ow,b^|  
package org.rut.util.algorithm.support; *o ix6  
]Hv[IodJ  
import org.rut.util.algorithm.SortUtil; #/37V2E  
Fsg*FH7J  
/** F!K>Kz  
* @author treeroot Tid aa  
* @since 2006-2-2 \i &<s;  
* @version 1.0 rytyw77t(  
*/ "0TZTa1e  
public class SelectionSort implements SortUtil.Sort { BMf@M  
N'=gep0V@  
/* fc>L K7M  
* (non-Javadoc) M',?u  
* klhtKp_p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F:DrX_O%  
*/ _)-o1`*-  
public void sort(int[] data) { \fe]c :  
int temp; q5S9C%b  
for (int i = 0; i < data.length; i++) { dAj$1Ke  
int lowIndex = i; ]]yO1x$Kk  
for (int j = data.length - 1; j > i; j--) { I%Z  
if (data[j] < data[lowIndex]) { Dvln/SBk  
lowIndex = j; e+K^A q  
} BJ(M2|VH  
} 08{@rOr  
SortUtil.swap(data,i,lowIndex); Etm?'  
} w4Z'K&d=  
} #`s"WnP9'!  
poFg 1  
} ybUaTD@?}b  
4B][S'f  
Shell排序: P!k{u^$L  
#X"@<l4F  
package org.rut.util.algorithm.support; kG*~ |ma  
fF kj+  
import org.rut.util.algorithm.SortUtil; |wj?ed$ f  
+ck}l2&#  
/** FN73+-:n:j  
* @author treeroot i}?>g-(  
* @since 2006-2-2 Y<8vw d  
* @version 1.0 /a o5FL  
*/ U/BR*Zn]*  
public class ShellSort implements SortUtil.Sort{ :M5l*sIO2  
zx7{U8*`<  
/* (non-Javadoc) zdH kG_PT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9_s`{(0?  
*/ ?bu>r=oIO]  
public void sort(int[] data) { F6dP,(  
for(int i=data.length/2;i>2;i/=2){ :U x_qB  
for(int j=0;j insertSort(data,j,i); HpnWo DM  
} Z%\,w(o[h  
} GPkpXVm  
insertSort(data,0,1); Du){rVY^d  
} Lj;2\]  
<0?W{3NqI  
/** DlNX 3  
* @param data igAtRX%Qx  
* @param j _J[P[(ab  
* @param i xkR0  
*/ GuL<Z1<c  
private void insertSort(int[] data, int start, int inc) { >F&47Yn  
int temp; Sa5G.^ XI  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )\^-2[;  
} pD]OT-8  
} ~u+9J}  
} N}YkMJy  
~e.L.,4QZ8  
} gPc=2  
I++. ee  
快速排序: 7t_^8I%[  
8HdAFRw  
package org.rut.util.algorithm.support; -|\ZrE_h  
^sg,\zD 'X  
import org.rut.util.algorithm.SortUtil; sn>~O4"  
Ecx<OTo  
/** WMP,\=6k0  
* @author treeroot ,6W>can  
* @since 2006-2-2 HUOj0T  
* @version 1.0 B?o7e<l[  
*/ #cLBQJq  
public class QuickSort implements SortUtil.Sort{ BFW&2  
+d-NL?c  
/* (non-Javadoc) yR.Ong  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 76` .Y  
*/ dAe')N:KPI  
public void sort(int[] data) { '[O;zJN;  
quickSort(data,0,data.length-1); ~< x:q6  
} y18Y:)DkL  
private void quickSort(int[] data,int i,int j){ 6\S~P/PkE  
int pivotIndex=(i+j)/2; 9]@!S|1  
file://swap P L+sR3bR  
SortUtil.swap(data,pivotIndex,j); s&J]zb`  
R_xRp&5  
int k=partition(data,i-1,j,data[j]); /|#fejPh  
SortUtil.swap(data,k,j); t);/'3|  
if((k-i)>1) quickSort(data,i,k-1); Vs{|xG7W D  
if((j-k)>1) quickSort(data,k+1,j); e(8Ba X _  
/JU.?M35  
} Oz#{S:24M+  
/** d*Fj3Wkx  
* @param data Q)z8PQl O  
* @param i sFTy(A/  
* @param j ji,kkipY?w  
* @return RY*U"G0#w  
*/ qb` \)X]9  
private int partition(int[] data, int l, int r,int pivot) { f'3$9x  
do{ VgS_s k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); O%HHYV%[m  
SortUtil.swap(data,l,r); ,wdD8ZT'Ip  
} 9@)O_@=  
while(l SortUtil.swap(data,l,r); ##4HYQ%E  
return l; t<?,F  
} )sQ*Rd@t[8  
-RK- Fu<e  
} uhutg,[  
m<2M4u   
改进后的快速排序: BJo*'US-Q  
?5 [=(\/.  
package org.rut.util.algorithm.support; W'u>#  
vEz"xz1j!]  
import org.rut.util.algorithm.SortUtil; ib791  
xFg>SJ7]  
/** wo 5   
* @author treeroot SOvF[,+  
* @since 2006-2-2 `n?DU;,  
* @version 1.0 R .2wqkY  
*/ Ef13Q]9|  
public class ImprovedQuickSort implements SortUtil.Sort { 0Z]!/AsC  
YkQd  
private static int MAX_STACK_SIZE=4096; 1]/.` ]1  
private static int THRESHOLD=10; g9 5`.V}  
/* (non-Javadoc) @2v_pJy^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2gVm9gAHUd  
*/ 2SR:FUV/  
public void sort(int[] data) { t#eTV@-  
int[] stack=new int[MAX_STACK_SIZE]; Hl |z</*+  
3%=~) 7cF  
int top=-1; G'aDb/  
int pivot; tcog'nAz  
int pivotIndex,l,r; }?v )N).kW  
)IZ~G\Ra'  
stack[++top]=0; hqkz^!rp  
stack[++top]=data.length-1; x# 5A(g  
>t_6B~x9  
while(top>0){ 5rZ  
int j=stack[top--]; t}tEvh  
int i=stack[top--]; G?Hdq;  
~gRf:VXX=_  
pivotIndex=(i+j)/2; 4)o  
pivot=data[pivotIndex]; h;NYdX5  
OprkR  
SortUtil.swap(data,pivotIndex,j); OY@ %p}l  
vd4ytC  
file://partition PXNh&N  
l=i-1; WVvvI9  
r=j; (7=9++uU  
do{ %vi<Ase g  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); As<bL:>dE  
SortUtil.swap(data,l,r); Jo23P.#<  
} 1|-Dj|  
while(l SortUtil.swap(data,l,r); 8E]F$.6U  
SortUtil.swap(data,l,j); RhLVg~x  
3I-MdApT  
if((l-i)>THRESHOLD){ q;)JISf.  
stack[++top]=i; 0v$~90)  
stack[++top]=l-1; K0Fh%Y4)QH  
} T0rG M  
if((j-l)>THRESHOLD){ yY&I dE  
stack[++top]=l+1; #$qTFN  
stack[++top]=j; \6*I'|5 d  
} hTi$.y!k  
Ck7uJI<x  
} pBA7,z"`mP  
file://new InsertSort().sort(data); ~Vjl7G\7i  
insertSort(data); q.`NtsW!\+  
} k7A-J\  
/** x{/g(r={}  
* @param data 5iyd Z  
*/  zi`o#+  
private void insertSort(int[] data) { ]+:^W^bs:  
int temp; (;^syJrh  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J!U}iD@occ  
} S\!ana])  
} ChXq4]  
} #" iu| D  
[-oc>; `=l  
} AX/m25x  
w!clI8v/  
归并排序: Pce;r*9  
$aXer:  
package org.rut.util.algorithm.support; /{--+ C  
K~eh P[^  
import org.rut.util.algorithm.SortUtil; F;0}x;:>  
o"R7,N0rB  
/** ?R.j^ S^  
* @author treeroot u.Tcg^v  
* @since 2006-2-2 2u*KM`fa`  
* @version 1.0 LvUj9eVb/L  
*/ 9.B KI/  
public class MergeSort implements SortUtil.Sort{ oc0G |  
A`o8'+`C  
/* (non-Javadoc) PGV/ h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qE3UO<FA  
*/ %m$Sp47  
public void sort(int[] data) { ?|B&M\}g  
int[] temp=new int[data.length]; a8Nh=^Py  
mergeSort(data,temp,0,data.length-1); mmRJ9OhS  
} =k`Cr0aPF  
h6`6tk  
private void mergeSort(int[] data,int[] temp,int l,int r){ UVIKQpA]A  
int mid=(l+r)/2; uT7B#b7  
if(l==r) return ; gz#i.-  
mergeSort(data,temp,l,mid); q2:6QM&  
mergeSort(data,temp,mid+1,r); h Pa_VrH  
for(int i=l;i<=r;i++){ I- >Ss},U  
temp=data; qfRH5)k  
} 5 -RsnF  
int i1=l; 6h,(wo3Y  
int i2=mid+1; j@uOOhy  
for(int cur=l;cur<=r;cur++){ e@* EzvO  
if(i1==mid+1) p hzKm9  
data[cur]=temp[i2++]; /9p wZ%:<  
else if(i2>r) {w^+\]tC  
data[cur]=temp[i1++]; dNL(G%Qj+"  
else if(temp[i1] data[cur]=temp[i1++]; M>ruKHipFE  
else {vyv7L  
data[cur]=temp[i2++]; q6`b26  
} q}#6e]t  
} "v({ ,  
~=RT*>G_  
} @x'"~"%7b  
[o+q>|q  
改进后的归并排序: y0.8A-2:  
.Cl:eu,]  
package org.rut.util.algorithm.support; c*L\_Vx+  
iq( E'`d  
import org.rut.util.algorithm.SortUtil; EkNunCls  
@? QoF#D  
/** jeH~<t{  
* @author treeroot .Blf5b  
* @since 2006-2-2 L4z ~B!uvF  
* @version 1.0 ww $  
*/ qPy1;maXP  
public class ImprovedMergeSort implements SortUtil.Sort { kN4{13Qs*  
64G[|" j D  
private static final int THRESHOLD = 10; k" PayyAC  
?3zc=J"t  
/* \VyZ  
* (non-Javadoc) "8^ Ch{G-  
* v)t:|Q{I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OJ5#4qJ[  
*/ <;m<8RjX  
public void sort(int[] data) { r@t9Ci=}  
int[] temp=new int[data.length]; Mh/dpb\Z  
mergeSort(data,temp,0,data.length-1); ,*hLFaR-  
} pRIhFf  
:^WKT  
private void mergeSort(int[] data, int[] temp, int l, int r) { BB*f4z$Y%  
int i, j, k; ~8P!XAU56%  
int mid = (l + r) / 2; z(Pe,zES  
if (l == r) .e=:RkI,  
return; ADP%QTdqFJ  
if ((mid - l) >= THRESHOLD) Et/\xL  
mergeSort(data, temp, l, mid); @As[k2  
else c[4i9I3v  
insertSort(data, l, mid - l + 1); `e|0g"oP  
if ((r - mid) > THRESHOLD) <vh/4  
mergeSort(data, temp, mid + 1, r); kJzoFFWo$  
else 6qoyiT%P&  
insertSort(data, mid + 1, r - mid); [] `&vWZ  
_'>oXQJ  
for (i = l; i <= mid; i++) { ``Dq  
temp = data; vAh6+K.e  
} ,3p~w5C/+[  
for (j = 1; j <= r - mid; j++) { BJsz2t :0  
temp[r - j + 1] = data[j + mid]; W;L7SF g)  
} C|). ;V&  
int a = temp[l]; 1&)?JZhg  
int b = temp[r]; nvJf/90$  
for (i = l, j = r, k = l; k <= r; k++) { ]?+p5;{y4  
if (a < b) { !K}~/9Z=m  
data[k] = temp[i++]; (ehK?6[  
a = temp; `W:%mJd9  
} else { >x+6{^}Q>  
data[k] = temp[j--]; o` ZQd,3  
b = temp[j]; Avd ^  
} )d1_Wm#B  
} ,PuL{%PXu  
} r1.nTO%  
zHL@i0>^  
/** ICs\ z  
* @param data %g$V\zmU  
* @param l /VS [pXXT|  
* @param i m~P CB_ifW  
*/ V4P; 5[  
private void insertSort(int[] data, int start, int len) { Gh}LlX!w  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Y*>#T  
} 5JCG2jqx0  
} y8L D7<1u  
} wrbLDod /  
} Z&4&-RCi  
WDc+6/<  
堆排序: EQ`(yj  
{G}.b)9FG  
package org.rut.util.algorithm.support; 0Lc9M-Lg  
Lz!,kwg  
import org.rut.util.algorithm.SortUtil; Fzpfoz<N  
D@|W<i-  
/** jR2 2t`4  
* @author treeroot ^ZhG>L*  
* @since 2006-2-2 GCX G/k?w:  
* @version 1.0 E4W -hq~  
*/ 2FF4W54I  
public class HeapSort implements SortUtil.Sort{ 8:>1F,  
u7[ykyV  
/* (non-Javadoc) v:o({Y 1Aq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H!nr^l'+  
*/ ~Ro9u p  
public void sort(int[] data) { n'01Hh`0  
MaxHeap h=new MaxHeap(); #qI= Z0Y  
h.init(data); LbG_z =A  
for(int i=0;i h.remove(); TUDr\' @/f  
System.arraycopy(h.queue,1,data,0,data.length); Fpa ;^F  
} j!4et;  
'0uh D.|G  
private static class MaxHeap{ ]*FVz$>XM  
[}8|R0KF  
void init(int[] data){ *@Y3oh}S  
this.queue=new int[data.length+1]; ,(?po (']  
for(int i=0;i queue[++size]=data; 2 :mn</z  
fixUp(size); k RD%b[*d  
} H nUYqhZS  
} GXjfQ~<]  
L19C<5>  
private int size=0; ?jt}*q>X]  
*l;B\=KR  
private int[] queue; x.zbD8l/9  
1~ t{aLPz  
public int get() { =ng\ 9y[;D  
return queue[1]; ks97k8B  
} 80&.JP.  
TJ'[--  
public void remove() { +$(2:S*r  
SortUtil.swap(queue,1,size--); K+8-9$w6  
fixDown(1); Q7C;1aO  
} 4*mS y  
file://fixdown 6{+{lBm=y  
private void fixDown(int k) { _5m#2u51i  
int j; w'fT=v)  
while ((j = k << 1) <= size) { DUe&r,(4O  
if (j < size %26amp;%26amp; queue[j] j++; 0i|oYaC  
if (queue[k]>queue[j]) file://不用交换 rBTeb0i?  
break; C2xL1`  
SortUtil.swap(queue,j,k); )+"'oY$]}  
k = j; |t) }VM%  
} !x>%+&c>k  
} T?1Du"d8  
private void fixUp(int k) { lGk{LO)  
while (k > 1) { _uKZMl  
int j = k >> 1; dT$M y`>  
if (queue[j]>queue[k]) f1)x5N  
break; V$icWu  
SortUtil.swap(queue,j,k); D8nD/||;Z  
k = j; 5qkH|*Z3  
} jfx8EbQ  
} g'u?Rn 7*J  
<[J[idY1he  
} -,aeM~  
RQp|T5Er*  
} !>`N$-U X  
<ggtjw S  
SortUtil: !!V#v9{  
#gaQaUjR  
package org.rut.util.algorithm; G0{H5_h  
{}m PEd b  
import org.rut.util.algorithm.support.BubbleSort; f\1A! Yp  
import org.rut.util.algorithm.support.HeapSort; e)IpPTj#  
import org.rut.util.algorithm.support.ImprovedMergeSort; ym/fFm6h  
import org.rut.util.algorithm.support.ImprovedQuickSort; Q33"u/-v  
import org.rut.util.algorithm.support.InsertSort; %#Z/2<_  
import org.rut.util.algorithm.support.MergeSort; lR`'e0Lq  
import org.rut.util.algorithm.support.QuickSort; ]I.n\2R]om  
import org.rut.util.algorithm.support.SelectionSort; d90Z,nex  
import org.rut.util.algorithm.support.ShellSort; 7GS V  
G #T<`>T  
/** B_l{<  
* @author treeroot m6yIR6H  
* @since 2006-2-2 8W+gl=C~  
* @version 1.0 + "}=d3E6  
*/ q4$+H{xB  
public class SortUtil { F3lw@b3])  
public final static int INSERT = 1; Z,;cCxE  
public final static int BUBBLE = 2; 'snn~{hG  
public final static int SELECTION = 3; -l-E_6|/W  
public final static int SHELL = 4; u!U"N*Y"  
public final static int QUICK = 5; Af5D>/  
public final static int IMPROVED_QUICK = 6; {[t`j+J  
public final static int MERGE = 7; :!f(F9  
public final static int IMPROVED_MERGE = 8; q$.{j"cZV  
public final static int HEAP = 9; dg7=X{=9jv  
KZ e)K_1[  
public static void sort(int[] data) { tYqs~B3  
sort(data, IMPROVED_QUICK); h~,JdDV8l*  
} qr50E[  
private static String[] name={ ORWm C!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [;oCYb$9  
}; BtdXv4V  
!epgTN  
private static Sort[] impl=new Sort[]{ CG&`16KN7  
new InsertSort(), %T=A{<[`  
new BubbleSort(), \#x}q'BC4  
new SelectionSort(), @l(vYJ:f  
new ShellSort(), x/MZ(A%D  
new QuickSort(), ^D_/=4rz8  
new ImprovedQuickSort(), *Sf -; U  
new MergeSort(),  <n\`d  
new ImprovedMergeSort(), YEx)"t8E  
new HeapSort() "$5\,  
};  `}no9$l~  
Hj1 EGCA  
public static String toString(int algorithm){ PaCzr5!~f  
return name[algorithm-1]; jSQ9.%4  
} 5NXt$k5  
qG9+/u)\  
public static void sort(int[] data, int algorithm) { F{\gc|!i  
impl[algorithm-1].sort(data); 0ZPV' `KGp  
} 9kY[j2,+  
8g7,2f/ }  
public static interface Sort { kK~IwA  
public void sort(int[] data); )W&>[B  
} A?"h@-~2  
HT_TP q  
public static void swap(int[] data, int i, int j) { ) I@L+  
int temp = data; $H'X V"<o  
data = data[j]; =FBpo2^QB;  
data[j] = temp; qkP/Nl. u  
} /WnE:3G  
} ]y)Q!J )Q  
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