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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。 XaV h.  
插入排序: IPoNAi<b  
QuJ)WaJkC  
package org.rut.util.algorithm.support; O?9&6x   
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import org.rut.util.algorithm.SortUtil; j9YI6X"  
/** viT/$7`AI  
* @author treeroot w#5^A(NR  
* @since 2006-2-2 S]3t{s#JW7  
* @version 1.0 RS~jHwIh  
*/ ^U.8grA  
public class InsertSort implements SortUtil.Sort{ Y\ len  
I7hE(2!$  
/* (non-Javadoc) n%]1p36  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0BM3:]=wr  
*/ )q\|f_  
public void sort(int[] data) { ~ b ;%J:  
int temp; v'*#P7%Kf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z17x%jXy  
} ^[SQw)*  
} Dxu2rz!li-  
} uf (`I  
G:QaWqUb  
} K_4}N%P/))  
7 p(^I*|  
冒泡排序: ^E8XPK]-~  
@O/-~, E68  
package org.rut.util.algorithm.support; ;aip1Df  
k ckWBL  
import org.rut.util.algorithm.SortUtil; Bg*Oj)NM  
}^;Tt-*k  
/** %+U.zd$  
* @author treeroot H\7Qf8s|{  
* @since 2006-2-2 3PLv;@!#j}  
* @version 1.0 (8u.Xbdh  
*/ t3.;W/0_  
public class BubbleSort implements SortUtil.Sort{ aCe<*;b@  
O<Rm9tZ8  
/* (non-Javadoc)  h+Dp<b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (7G5y7wI"  
*/ y1!c:&  
public void sort(int[] data) { C&b^TLe  
int temp; ika/ GG  
for(int i=0;i for(int j=data.length-1;j>i;j--){ GQOz\ic  
if(data[j] SortUtil.swap(data,j,j-1); A=/|f$s+  
} vlAYKtl3]  
} y-gSal  
} :yo tpa  
} F7wpGtt  
oO-kO!59y  
} %l!Gt"\xm  
f:gXXigY,  
选择排序: NWuS/Ur`9  
 "MD  
package org.rut.util.algorithm.support; pt&(c[  
%Uj7 g>  
import org.rut.util.algorithm.SortUtil; (-tF=wR,W  
\e64Us>"x  
/** #8G (r9  
* @author treeroot w:P$ S  
* @since 2006-2-2 TOp|Qtn  
* @version 1.0 Q<.84 7 )  
*/ b/:&iG;  
public class SelectionSort implements SortUtil.Sort { ^b=9{.5  
s_A<bW566F  
/* |'xVU8  
* (non-Javadoc) gf()NfUvRH  
* ."<mL}Fi(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vkWh2z  
*/ s)ymm7?  
public void sort(int[] data) { u/3 4E=  
int temp; 3>Ts7 wM  
for (int i = 0; i < data.length; i++) { p}%T`e=Z9  
int lowIndex = i; 01VEz 8[\  
for (int j = data.length - 1; j > i; j--) { hiWfVz{~  
if (data[j] < data[lowIndex]) { :<l(l\MC  
lowIndex = j; 2yk32|  
} 6vySOVMj  
} ZtPq */'  
SortUtil.swap(data,i,lowIndex); yES+0D5<  
} z;GR(;w/  
} c`94a SnV  
D3s]49j)  
} pZ?7'+u$L  
~wmc5L/!?  
Shell排序: x}t,v.:  
^W|B Xxo  
package org.rut.util.algorithm.support; RHc63b\  
w,fA-*bZ 0  
import org.rut.util.algorithm.SortUtil; 5|>FM&  
pJ Iq`)p5  
/** AV\6K;~  
* @author treeroot ^sR]w]cz.  
* @since 2006-2-2 8.4 1EKr2  
* @version 1.0 bM[!E8dF  
*/ *5'U3py  
public class ShellSort implements SortUtil.Sort{ cs[_5r&:  
BFP (2j  
/* (non-Javadoc) f$vWi&(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9~8 A>  
*/ f>\guuG  
public void sort(int[] data) { :=qblc  
for(int i=data.length/2;i>2;i/=2){ $Fx:w  
for(int j=0;j insertSort(data,j,i); :r%H sur(  
} <smi<syx  
} 41f4zisZ  
insertSort(data,0,1); `NqX{26GV+  
} dHp(U :)  
a g Za+a  
/** xxWrSl`fB  
* @param data /XtpGk_1)  
* @param j %a- *Ku  
* @param i f;1DhAS  
*/ =SJwCT0;  
private void insertSort(int[] data, int start, int inc) { o  RT<h  
int temp; egcJ@Of  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2%Bq[SMuN  
} fx &b*O C  
} $^|I?5xD  
} ]B'Ac%Rx  
88\0opL-  
} y5;l?v94  
$2u^z=`b!%  
快速排序: ;8z40cD  
i[obQx S94  
package org.rut.util.algorithm.support; ?;1^8 c0  
t?J Y@hT*  
import org.rut.util.algorithm.SortUtil; )c vA}U.z  
M{#  
/** LgN\%5f-  
* @author treeroot !vNZ- }  
* @since 2006-2-2 L'XX++2  
* @version 1.0 nO{@p_3mi  
*/ Wez"E2J`  
public class QuickSort implements SortUtil.Sort{ ?M'_L']N[  
^+Ho#]  
/* (non-Javadoc) W\xM$#)m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,VK! 3$;|  
*/ Ul@ Jg    
public void sort(int[] data) { '\yp}r'u  
quickSort(data,0,data.length-1); 0Y7b$~n'Y  
} VO"f=gFg  
private void quickSort(int[] data,int i,int j){ WR'm<u  
int pivotIndex=(i+j)/2; ub^v ,S8O  
file://swap 3m1]Ia -9  
SortUtil.swap(data,pivotIndex,j); (x7AV$N  
P} =eR  
int k=partition(data,i-1,j,data[j]); ? U~}uG^  
SortUtil.swap(data,k,j); Ta;'f7Oz  
if((k-i)>1) quickSort(data,i,k-1); 5r1{l%?  
if((j-k)>1) quickSort(data,k+1,j); >Xz P'h  
+^!;J/24  
} HD"Pz}k4  
/** -~z]ut<Z  
* @param data CS[[TzC=5  
* @param i }2qmL$  
* @param j V'vDXzk\  
* @return BPAz.K Q  
*/ 56!>}!8!  
private int partition(int[] data, int l, int r,int pivot) { -]=-IiC#  
do{ rN3i5.*/t  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >?b<)Q*<  
SortUtil.swap(data,l,r); CRsgR)  
} v/%q*6@  
while(l SortUtil.swap(data,l,r); UO-<~DgH  
return l; $.Fti-5  
} )3O0:]<H  
y?BzZ16\bL  
} "X/cG9Lw  
zPwU'TbF  
改进后的快速排序: YLc 2:9  
`V N $ S  
package org.rut.util.algorithm.support; EA )28]Y.  
_H#l&bL@C  
import org.rut.util.algorithm.SortUtil; J)6A,:wt  
"m^whHj  
/** Z,~"`9>Ss  
* @author treeroot IEb"tsel  
* @since 2006-2-2 K*&?+_v :  
* @version 1.0 ]V9z)uz  
*/ gemjLuf  
public class ImprovedQuickSort implements SortUtil.Sort { fneg[K  
:v/6k  
private static int MAX_STACK_SIZE=4096; ![H!Y W'  
private static int THRESHOLD=10; {,r7dxI)`  
/* (non-Javadoc) .;gK*`G2W)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gR `:)>  
*/ BV=L.*  
public void sort(int[] data) { 2Z]<MiAxD  
int[] stack=new int[MAX_STACK_SIZE]; !oXA^7Th6]  
9T*%CI  
int top=-1; Rg*zUfu5%o  
int pivot; %y zFWDg  
int pivotIndex,l,r; C#]%  
6km{= ```  
stack[++top]=0; ,}&E=5MF\  
stack[++top]=data.length-1; 'TPRGX~&  
?L|Jc_E  
while(top>0){ Ck,.4@\tK  
int j=stack[top--]; kqYvd]ss  
int i=stack[top--]; {Kp<T  
PPCZT3c=  
pivotIndex=(i+j)/2; A:"J&TbBx  
pivot=data[pivotIndex]; G>hmVd  
\! 8`kC  
SortUtil.swap(data,pivotIndex,j); .ON+ ( #n  
a7G0  
file://partition gI A{6,A  
l=i-1; =l`xXma  
r=j; yVPkJ  
do{ ]Y[8|HJ8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); v2<roG6.V  
SortUtil.swap(data,l,r); rQNT  
} m,n V,}@J  
while(l SortUtil.swap(data,l,r); )=\W sQ  
SortUtil.swap(data,l,j); UXB[3SP  
!=#230Y  
if((l-i)>THRESHOLD){ mfu >j,7l  
stack[++top]=i; tK&.0)*=  
stack[++top]=l-1; )2X ng_,  
} SM:SxhrGt  
if((j-l)>THRESHOLD){ fTi,S)F'  
stack[++top]=l+1; Xq&x<td  
stack[++top]=j; HF-Msu6  
} t`{^gt  
3Lwl~h!  
} K[LTw_oE  
file://new InsertSort().sort(data); pk'@!|g%=  
insertSort(data); w $7J)ngA9  
} ~Z5?\a2Ld  
/** H[%F o  
* @param data .kM74X=S  
*/ to Ei4u)m  
private void insertSort(int[] data) { (^g?/i1@d  
int temp; ]?F05!$*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9E _C u2B  
} 3 uwZ#   
} r;w_B%9  
} |7Z,z0 ?V  
>vg!<%]W]  
} ]>@; 2%YvY  
 l;>#O  
归并排序: {+[~;ISL  
Yt*M|0bL  
package org.rut.util.algorithm.support; RIX0AE  
xJ9_#$ngeM  
import org.rut.util.algorithm.SortUtil; 96F:%|yG  
@18@[ :d"  
/** O?@1</r^  
* @author treeroot {xt<`_R  
* @since 2006-2-2 3Z'{#<1>^;  
* @version 1.0 G?QFF6)}!  
*/ ~c!zTe  
public class MergeSort implements SortUtil.Sort{ S>7Zq5*  
my")/e  
/* (non-Javadoc) uAyj##H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pi6C1uY6  
*/ |bDN~c:/  
public void sort(int[] data) { K G~](4JE(  
int[] temp=new int[data.length]; O#A1)~  
mergeSort(data,temp,0,data.length-1); < W,k$|w  
} w;Qo9=-  
 L}AR{  
private void mergeSort(int[] data,int[] temp,int l,int r){ q 9qmz[  
int mid=(l+r)/2; <C6/R]x#  
if(l==r) return ; lg;Y}?P  
mergeSort(data,temp,l,mid); \E.t=XBn  
mergeSort(data,temp,mid+1,r); 14\%2nE  
for(int i=l;i<=r;i++){ .]ZM2  
temp=data; {mL/)\  
} f7X#cs)a  
int i1=l; &tZ?%sr  
int i2=mid+1; UA,&0.7  
for(int cur=l;cur<=r;cur++){ ^Gv<Xl  
if(i1==mid+1) I(Nsm3L  
data[cur]=temp[i2++]; lGPC)Hu{`  
else if(i2>r) S^)r,cC  
data[cur]=temp[i1++]; $E|W|4N  
else if(temp[i1] data[cur]=temp[i1++]; |dD!@K  
else  -/  
data[cur]=temp[i2++]; 3HbHl?-UNU  
} >^:g[6Sj  
} q30WUO;  
YH<F~F _  
} ~N[hY1}X[  
CpS' 2@6  
改进后的归并排序: -7ct+3"J  
/_,~dt  
package org.rut.util.algorithm.support; 6Epns s  
NOx&`OU+  
import org.rut.util.algorithm.SortUtil; /BT;Q)( &  
g8XGZW!  
/** C4Z~9fzT  
* @author treeroot SX^fh.  
* @since 2006-2-2 94APjqV6'  
* @version 1.0 g) v"nNS  
*/ n{BC m %  
public class ImprovedMergeSort implements SortUtil.Sort { NG'VlT  
ErESk"2t  
private static final int THRESHOLD = 10; PR|Trnd&D  
Z55,S=i  
/* lha )'   
* (non-Javadoc) Ef,@}S  
* '0 ( Bb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _$ixE~w-!  
*/ *, *"G?  
public void sort(int[] data) { FZ=6x}QZ  
int[] temp=new int[data.length]; ~n[LL)v  
mergeSort(data,temp,0,data.length-1); 7gVWu"  
} A</[Q>8  
Qb|w\xT^Y  
private void mergeSort(int[] data, int[] temp, int l, int r) { $:u,6|QsS=  
int i, j, k; YfMe69/0I  
int mid = (l + r) / 2; hQL9 Zl~  
if (l == r) EE}NA{b  
return; }#'KME4  
if ((mid - l) >= THRESHOLD) ,;+\!'lS  
mergeSort(data, temp, l, mid); 7Wb.(` a<  
else A^,(Vyd  
insertSort(data, l, mid - l + 1); "fpj"lf-  
if ((r - mid) > THRESHOLD) ]nX.zE|F  
mergeSort(data, temp, mid + 1, r); dt`L}Yi  
else =AD/5E,3  
insertSort(data, mid + 1, r - mid); %4 SREq  
v9inBBC q  
for (i = l; i <= mid; i++) { _D,8`na>K  
temp = data; tB_V%qH  
} hsqUiB tc6  
for (j = 1; j <= r - mid; j++) { uTl:u  
temp[r - j + 1] = data[j + mid]; /kw4":{]  
} yN>"r2   
int a = temp[l]; ^OBaVb  
int b = temp[r]; W77JXD93  
for (i = l, j = r, k = l; k <= r; k++) { #eUfwd6.Y  
if (a < b) { :ZL>JVk  
data[k] = temp[i++]; Vj2GK"$v  
a = temp; r`;C9#jZ  
} else { Z$ftG7;P0  
data[k] = temp[j--]; ^7"%eWT`  
b = temp[j]; raqLXO!j  
} 3$Is==>7  
} I.8|kscM  
} E*w 2yWR  
/t>o -  
/** v,D_^?]@  
* @param data Tby+Pd;  
* @param l ';ZJuJ.  
* @param i WN?T*bz2  
*/ a^=4 '.ok  
private void insertSort(int[] data, int start, int len) { l4/TJ%`MG  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `|/|ej]$P  
} >}4]51s  
} b8]oI"&G  
} Ro<!n>H  
} . \d0lJSr  
|iwTzlt*#  
堆排序: tLvli>y@  
D~?kvyJ  
package org.rut.util.algorithm.support; %I.{umU  
)K?GAj]Pq  
import org.rut.util.algorithm.SortUtil; ! 4oIx`  
Qy70/on9  
/** VuPET  
* @author treeroot M:I,j  
* @since 2006-2-2 F}AbA pTv  
* @version 1.0 Cfi2N V  
*/ T^nX+;:|  
public class HeapSort implements SortUtil.Sort{ aDOH3Ri0K!  
I"!gzI`Sd  
/* (non-Javadoc) GDcV1$NA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )_Oc=/c|f  
*/ z5vryhX_Z  
public void sort(int[] data) { EmUxM_ T/2  
MaxHeap h=new MaxHeap(); 7q^/.:wlf  
h.init(data); Z~c7r n  
for(int i=0;i h.remove(); ^=W&p%Y(!  
System.arraycopy(h.queue,1,data,0,data.length); TdE_\gEo/R  
} f.f4<_v'h  
5o3_x ~e  
private static class MaxHeap{ L|Ydd!m  
sN g"JQ  
void init(int[] data){ ZH}NlEn  
this.queue=new int[data.length+1]; RdDcMZ  
for(int i=0;i queue[++size]=data; -of= Lp  
fixUp(size); ('lnQD.Hd  
} 7 %|>7  
} 19rUvgC{M  
# _7c>gn  
private int size=0; %nCUct@c  
z<fEJN  
private int[] queue; 2"MI8EK  
8;'n.SC{  
public int get() { UA9LI<Y  
return queue[1]; K$]QzPXS  
} zh.c_>jS  
|{ [i M  
public void remove() { Ck:J  
SortUtil.swap(queue,1,size--); < 5PeI  
fixDown(1); )aC+qhh  
} i3"sAr P"|  
file://fixdown "_K 6=  
private void fixDown(int k) { /iN\)y#u1  
int j; h|H;ZC(B  
while ((j = k << 1) <= size) { 64vSJx>u  
if (j < size %26amp;%26amp; queue[j] j++; -Fdi,\e  
if (queue[k]>queue[j]) file://不用交换 C5M-MZaS  
break; &\H5*A.HkA  
SortUtil.swap(queue,j,k); ul%bo%&~  
k = j; l xfdJNb  
} #TWc` 8  
} <S}qcjG  
private void fixUp(int k) { kW~F*  
while (k > 1) { ?c2TT Q  
int j = k >> 1; B1M/5cr.  
if (queue[j]>queue[k]) VM,ZEt3Vy  
break; Za6oYM_z  
SortUtil.swap(queue,j,k); Hj\~sR$L-  
k = j; aOHCr>po,  
} ul?BKV+3E  
} qL P +@wbJ  
asi1c y\  
} X]fw9tZ  
V~_nyjrJM  
} S8=4C`>jf  
m?j!0>  
SortUtil: 9C$!tz>>+i  
#{M -3  
package org.rut.util.algorithm; 5a ~tp'  
*o[%?$8T  
import org.rut.util.algorithm.support.BubbleSort; duS #&w  
import org.rut.util.algorithm.support.HeapSort; z~ H Gc"~  
import org.rut.util.algorithm.support.ImprovedMergeSort; i njmP9ed  
import org.rut.util.algorithm.support.ImprovedQuickSort; gJ&!w8v.  
import org.rut.util.algorithm.support.InsertSort; H5s85"U#  
import org.rut.util.algorithm.support.MergeSort; x/7G0K2\}  
import org.rut.util.algorithm.support.QuickSort; 6.|~~/  
import org.rut.util.algorithm.support.SelectionSort; LU{Z  
import org.rut.util.algorithm.support.ShellSort; ]~^/w}(K  
is(!_Iv  
/** \uk#pL  
* @author treeroot 9^^#I ~-  
* @since 2006-2-2 $<cZ<g5)  
* @version 1.0 Fsf22  
*/ ;*2e;m~)?  
public class SortUtil { gQuw|u  
public final static int INSERT = 1; kYB <FwwB  
public final static int BUBBLE = 2; vb- .^l  
public final static int SELECTION = 3; ?I'-C?(t@1  
public final static int SHELL = 4; v-3zav  
public final static int QUICK = 5; Hl;p>>n  
public final static int IMPROVED_QUICK = 6; J,O@T)S@  
public final static int MERGE = 7; j/<y  
public final static int IMPROVED_MERGE = 8;  J31M:<  
public final static int HEAP = 9; 7LwS =yP  
XijLS7Aw|  
public static void sort(int[] data) { V]]qu:Mh8  
sort(data, IMPROVED_QUICK); |T_Pz& -  
} @vYmkF`  
private static String[] name={ !C#RW=h9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~ ZL`E  
}; @MB _gt)7?  
_vdxxhJ=P3  
private static Sort[] impl=new Sort[]{ ik *)j  
new InsertSort(), 0Qp'}_  
new BubbleSort(), Qcy`O m^2  
new SelectionSort(), 38rZ`O*D  
new ShellSort(), 5|CiwQg|,p  
new QuickSort(), ZZU8B?)  
new ImprovedQuickSort(), #( sNk,^Ax  
new MergeSort(), X`n0b<  
new ImprovedMergeSort(), b 0b9#9x  
new HeapSort() s[q4K  
}; U"+ ry.3`  
ig}e@]  
public static String toString(int algorithm){ Qe$>Jv5  
return name[algorithm-1]; !>< %\K  
} r ` &|)Hx  
yim$y, =d  
public static void sort(int[] data, int algorithm) { 50ew/fZj|  
impl[algorithm-1].sort(data); SECQVA_y`  
} 5TneuGD  
1[BvHOI2  
public static interface Sort { Ue#yDTjc  
public void sort(int[] data); =Rx?6%  
} J,G9m4Z7  
{7Avba  
public static void swap(int[] data, int i, int j) { P! Ed  
int temp = data; RVnyl`s  
data = data[j]; h+3Z.WKhwP  
data[j] = temp; `4.sy +2  
} Ig3(|{R  
} g]<Z]R`  
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