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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。 Yy!G?>hC  
插入排序: b5p;)#  
wPyc?:|KD?  
package org.rut.util.algorithm.support; >$<Q:o}^  
AB!({EIi  
import org.rut.util.algorithm.SortUtil; <q MX,h2  
/** 4&]NC2I  
* @author treeroot Q2|6WE  
* @since 2006-2-2 7DW-brd   
* @version 1.0 YU87l  
*/ R^E-9S\@  
public class InsertSort implements SortUtil.Sort{ d6W&u~  
PVKq&Q?  
/* (non-Javadoc) &=8ZGjR< }  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mc  
*/ RplcM%YJn  
public void sort(int[] data) { qyIy xJ  
int temp; Cn9MboXX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $YBH;^#  
} }Ny~.EV5^  
} >03JQe_#*L  
} fQU_A  
7")&njQ/x  
} OUHd@up@n  
V6<Ki  
冒泡排序: TI'~K}Te  
|?fc]dl1]  
package org.rut.util.algorithm.support; (w'k\y  
w68VOymD/  
import org.rut.util.algorithm.SortUtil; piUfvw  
atFu KYI  
/** /3vj`#jD  
* @author treeroot 1 pzd  
* @since 2006-2-2 [h :FJ  
* @version 1.0 :n?}G0y  
*/ $r)nvf`\  
public class BubbleSort implements SortUtil.Sort{ `^E(P1oJ3  
 hWu#}iN  
/* (non-Javadoc) wa9{Q}wSa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rNHV  
*/ > cJX'U9  
public void sort(int[] data) { A7 :W0Gg  
int temp; \-s'H:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ M8lR#2n|  
if(data[j] SortUtil.swap(data,j,j-1); p&\x*~6u  
} (aH_K07  
} BUKh5L  
} &-Zg0T&tZ  
} $VJ=A<  
K>$od^f%c  
} seH#v  
*SZ*S %oS3  
选择排序: ]+S.#x`#  
tU7eW#"w  
package org.rut.util.algorithm.support; Ec]cCLB  
7,"1%^tU  
import org.rut.util.algorithm.SortUtil; eVWnD,'  
'W j Q  
/** .~ W^P>t  
* @author treeroot LNU9M>  
* @since 2006-2-2 5k}UXRB?  
* @version 1.0 1k>*   
*/ 'x10\Q65[  
public class SelectionSort implements SortUtil.Sort { Z5{M_^  
dDk<J;~jGJ  
/* {/ _.]Vh  
* (non-Javadoc) D &wm7,  
* Hca)5$yL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x2TCw  
*/ 2S8/ lsB  
public void sort(int[] data) { 2{h9a0b  
int temp; 'u.`!w '|L  
for (int i = 0; i < data.length; i++) { B: uW(E  
int lowIndex = i; ZD0Q<8%  
for (int j = data.length - 1; j > i; j--) { ziy~~J  
if (data[j] < data[lowIndex]) { GL1!Z3  
lowIndex = j; !/$BXUrd  
} *pv hkJ g(  
} Wm.SLr,o0  
SortUtil.swap(data,i,lowIndex); rReZ$U  
} hD l+  
} W#0pFofXw  
?P`]^#  
} GYv2 ^IB:  
@v2kAOw[  
Shell排序: <  v_?}  
^QV;[ha,o  
package org.rut.util.algorithm.support; Vo(d)"m?  
t/S~CIA  
import org.rut.util.algorithm.SortUtil; ScfW;  
/{1xpR  
/** !cE)LG  
* @author treeroot JUU0Tx:`9)  
* @since 2006-2-2  Jb {m  
* @version 1.0 <v[,A8Q  
*/ P67r+P,  
public class ShellSort implements SortUtil.Sort{ wEzLfZ Oz/  
&2#x(v  
/* (non-Javadoc) R_ 4600  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /tP"r}l   
*/ I[<C)IG  
public void sort(int[] data) { D@4hQC\  
for(int i=data.length/2;i>2;i/=2){ ~Cj+6CrT  
for(int j=0;j insertSort(data,j,i); XX}RbE#4  
} S)$ES6]9/  
} n&[U/`o  
insertSort(data,0,1); h+ELtf  
} 59T:{d;~  
/1tqTi  
/** ybf`7KEP2A  
* @param data {My/+{eS!?  
* @param j I#S6k%-'  
* @param i Dw6Q2Gnv  
*/ ]rHdG^0uss  
private void insertSort(int[] data, int start, int inc) { }QG6KJh_%  
int temp; j t-ayLq  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }L@!TWR-Qu  
}  nKkI  
} o $p*C  
} 3Xf}vdgdM$  
tX Z5oG7  
} &gcKv1a\  
|7UR_(}KC  
快速排序: }3^t,>I=,6  
H-0A&oG  
package org.rut.util.algorithm.support; M_UhFY='  
Y R#_<o  
import org.rut.util.algorithm.SortUtil; =JNoC01D  
PS!f&IY}[.  
/** Gv6EJV1i  
* @author treeroot #th^\pV  
* @since 2006-2-2 2Wq)y1R<T  
* @version 1.0 Ry[VEn>C1  
*/ 07# ~cVI  
public class QuickSort implements SortUtil.Sort{ SAc}5.  
Y-@K@Zu]?  
/* (non-Javadoc) }N*6xr*X+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^0A'XCULG  
*/ +'hcFZn(T  
public void sort(int[] data) { (?I8/KYR  
quickSort(data,0,data.length-1); SpjL\ p0  
} 70a7}C\/o  
private void quickSort(int[] data,int i,int j){ xhj A!\DS  
int pivotIndex=(i+j)/2; wp-*S}TT  
file://swap D*DCMMp=0  
SortUtil.swap(data,pivotIndex,j); 4U~[ 8U}g  
/)MzF6  
int k=partition(data,i-1,j,data[j]); 5A Vo#}&\  
SortUtil.swap(data,k,j); tlQ3 BKp  
if((k-i)>1) quickSort(data,i,k-1); NHPpHY3^.  
if((j-k)>1) quickSort(data,k+1,j); s==gjA e:  
b,$H!V *  
} W$v5o9\Px  
/**  o-_0  
* @param data DL_2%&k/  
* @param i N3TkRJZ  
* @param j t+W+f  
* @return k2" Z:\?z  
*/ QROe+:  
private int partition(int[] data, int l, int r,int pivot) { +kd88Fx  
do{ tb/bEy^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); IE+$ET> t  
SortUtil.swap(data,l,r); _hMMm6a|  
} i_)j K  
while(l SortUtil.swap(data,l,r); cx&jnF#$  
return l; Ef;_im  
} SVpvx`&kT  
a9(1 6k  
} 5Q^ L"&0  
-z-58FLlO  
改进后的快速排序: &-470Z%/  
-:Nowb  
package org.rut.util.algorithm.support; g(7htWr4  
!O-q13\Y  
import org.rut.util.algorithm.SortUtil; /iQ}DbtRb  
zT6ng#  
/** x;# OM  
* @author treeroot B)Hs>Mh|W  
* @since 2006-2-2 !t3)j>h:  
* @version 1.0 jX$TiG  
*/ o) `zb?  
public class ImprovedQuickSort implements SortUtil.Sort { no?TEXp*  
xC9^x7%3O  
private static int MAX_STACK_SIZE=4096; A=o p R  
private static int THRESHOLD=10; 1uG?R  
/* (non-Javadoc) ? }|;ai  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kZs  
*/ {:$0j|zL1  
public void sort(int[] data) { 7]_UZ)u  
int[] stack=new int[MAX_STACK_SIZE]; OY*BVJ^  
Uq 2Uv  
int top=-1; +[V[{n  
int pivot; rteViq+|.  
int pivotIndex,l,r; Hv>A$x$q  
7 6~x|6)  
stack[++top]=0; [R)?93  
stack[++top]=data.length-1; nchhNU  
J*F-tRuEw  
while(top>0){ 5YUn{qtD  
int j=stack[top--]; 2lDgv ug  
int i=stack[top--]; Jvw~b\  
=i~/.Nu&  
pivotIndex=(i+j)/2; W1f]A#t<  
pivot=data[pivotIndex]; + V4BJ/H  
AMA :hQ  
SortUtil.swap(data,pivotIndex,j); yL^1s\<ddW  
={ c=8G8T  
file://partition _tS<\zy@y  
l=i-1; O?L _9L*  
r=j; 0PE $n  
do{ F'lG=c3N  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }r3, fH  
SortUtil.swap(data,l,r); -q[T0^e S  
} jb$sIZ%i  
while(l SortUtil.swap(data,l,r); "?Wwc d\  
SortUtil.swap(data,l,j); "tBdz V  
aD8cqVhM3&  
if((l-i)>THRESHOLD){ #!u P >/  
stack[++top]=i; h ^g"FSzP  
stack[++top]=l-1; &NZN_%  
} PA 5ET@mD  
if((j-l)>THRESHOLD){ Qf0$Z.-  
stack[++top]=l+1; z[b,:G  
stack[++top]=j; `0 uKJF g  
} Kg=TPNf"$  
V:9|9$G  
} ?`_US7.@  
file://new InsertSort().sort(data); HWT0oh]  
insertSort(data); 5(q\x(N  
} E D*=8 s2  
/** 18z{d9'F   
* @param data 90|p]I%  
*/ L7_(KCh  
private void insertSort(int[] data) { iaQ[}'6!$  
int temp; I: U/%cr,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5)' _3r  
} >};,Byv!%  
} fs&J%ku\  
} y GT"k,a  
VQU[5C  
} ^_9 ^iL  
h>sz@\{  
归并排序: R[LVx-e7'  
QG?7L_I  
package org.rut.util.algorithm.support; q@F"fjWBr  
D$q"k"  
import org.rut.util.algorithm.SortUtil; L!V`Sb  
G]E$U]=9r:  
/** >"jV8%!sM  
* @author treeroot {S%)GvrT  
* @since 2006-2-2 o+;=C@,'  
* @version 1.0 `!S5FE"-  
*/ z}.!q{Q  
public class MergeSort implements SortUtil.Sort{ MVg`6&oH  
2`+?s  
/* (non-Javadoc) ;_amgRP7$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bW;0E%_  
*/ Q-F'-@`(C  
public void sort(int[] data) { I{<6GIU+  
int[] temp=new int[data.length]; 33J}AK^FE  
mergeSort(data,temp,0,data.length-1); )b m|],'  
} 3:<+9X  
VD/Wl2DK  
private void mergeSort(int[] data,int[] temp,int l,int r){ \hdR&f5q  
int mid=(l+r)/2; %\_I% yF  
if(l==r) return ; :{h,0w'd  
mergeSort(data,temp,l,mid); g-pDk*|I,Q  
mergeSort(data,temp,mid+1,r); daaUC  
for(int i=l;i<=r;i++){ <]/`#Xgh  
temp=data; B h@R9O<  
} 583ej2HPg  
int i1=l; THJ KuWy  
int i2=mid+1; _Jk-nZgn  
for(int cur=l;cur<=r;cur++){ -?e~dLu  
if(i1==mid+1) |(}uagfrd  
data[cur]=temp[i2++]; LnZ*,>1 Z  
else if(i2>r) >r{3t{  
data[cur]=temp[i1++]; z~4L=tA(  
else if(temp[i1] data[cur]=temp[i1++]; CWE jX-  
else _S8]W !c  
data[cur]=temp[i2++]; `PSr64h:D  
} +6*oO|   
} f<xF+wE  
TcZ Ci^1F  
} C+P}R]cT"  
dS0G+3J&+E  
改进后的归并排序: 2c5>0f  
Mki(,Y|1~  
package org.rut.util.algorithm.support; hOfd<k\A  
S#jH2fRo  
import org.rut.util.algorithm.SortUtil; ]j*o&6cQf  
BS*cG>T  
/** bsM`C]h&  
* @author treeroot 3=t}py7M  
* @since 2006-2-2 L]9!-E  
* @version 1.0 $msT,$NJ  
*/ uP|AP  
public class ImprovedMergeSort implements SortUtil.Sort { oVoTnGNM6  
j0 =`Jf  
private static final int THRESHOLD = 10; -5p=gO  
<2A4}+p:  
/* m f4@g05  
* (non-Javadoc) /,Ln)?eD  
* =_%:9FnQ0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .w$v<y6C  
*/ !\ y_ik  
public void sort(int[] data) { feNr!/  
int[] temp=new int[data.length]; x18ei@c  
mergeSort(data,temp,0,data.length-1); WHbvb3'  
} Fj1/B0acS  
g/`i:=  
private void mergeSort(int[] data, int[] temp, int l, int r) { ^%go\ C ;  
int i, j, k; xd(AUl4qY  
int mid = (l + r) / 2; &`@,mUi{Ac  
if (l == r) ><\mt  
return; )KXLL;]  
if ((mid - l) >= THRESHOLD) 9!2KpuWji  
mergeSort(data, temp, l, mid); w$Dp m.0(  
else q n=6>wP  
insertSort(data, l, mid - l + 1); ]lz,?izMR  
if ((r - mid) > THRESHOLD) \VtCkb  
mergeSort(data, temp, mid + 1, r); E'MMhl o  
else $23="Jcl  
insertSort(data, mid + 1, r - mid); iY;)R|6  
Ao{wd1  
for (i = l; i <= mid; i++) { 1O(fI|gcO  
temp = data; ]NTHit^EX  
} K<|b>PI.s  
for (j = 1; j <= r - mid; j++) { m?[F)<~a  
temp[r - j + 1] = data[j + mid]; s<<vHzm  
} !m_'<=)B4~  
int a = temp[l]; 4RTEXoXs  
int b = temp[r]; !29 Rl`9  
for (i = l, j = r, k = l; k <= r; k++) { &]#D`u  
if (a < b) { ~0/=5 dC  
data[k] = temp[i++]; v`wPdb  
a = temp; QZh8l-!#5  
} else { OmU.9PDg-  
data[k] = temp[j--]; x!I7vs~~zW  
b = temp[j]; QQC0uta`  
} 0Fbq/63  
} ]j1BEO!Bg  
} {jk {K6 }  
!*CL>}-,  
/** UK _2i(I"e  
* @param data VaX>tUW  
* @param l \9ap$  
* @param i i~K~Czmok+  
*/ |$1j;#h  
private void insertSort(int[] data, int start, int len) { Ui?t@.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =faV,o&{`  
} o<C~67o_  
} ENqJ9%sk7  
} xhimRi  
} $]Fe9E?   
ia?8 Z"&lK  
堆排序: ,j5fzA  
[k1N`K(M  
package org.rut.util.algorithm.support; Kx<bVK4"  
c-s ~q/  
import org.rut.util.algorithm.SortUtil; qPzgGbmD9  
H 5sj% v  
/** :SYg)|s  
* @author treeroot D, 3x:nK  
* @since 2006-2-2 ^-=,q.[7  
* @version 1.0 T[<9Ty'^  
*/ a<vCAFQ  
public class HeapSort implements SortUtil.Sort{ Gia_B6*Y[  
|@d7o]eM|  
/* (non-Javadoc) :L\@+}{(c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ri\r%x  
*/ a&y%|Gs^f  
public void sort(int[] data) { sq :ff  
MaxHeap h=new MaxHeap(); >nTGvLOq  
h.init(data); iLS' 47  
for(int i=0;i h.remove(); :r#FI".qx  
System.arraycopy(h.queue,1,data,0,data.length); {)k}dr  
} uFECfh  
V1"+4&R^T_  
private static class MaxHeap{ ]1p&*xX:Bj  
WH'[~O  
void init(int[] data){ .Olq_wuH  
this.queue=new int[data.length+1]; 3YRhqp"E  
for(int i=0;i queue[++size]=data; #M8"b]oh6  
fixUp(size); )8e_<^M  
} .s, hl(w,  
} Fdvex$r&  
BBy/b c!  
private int size=0; lf Wxdi  
nDaQ1  
private int[] queue; c t,p?[Q  
2&5"m;<  
public int get() { m: w/[|_  
return queue[1]; N5oao'7|A  
} #ljfcQm  
+]*?J1 Y8Z  
public void remove() {  H\)on"  
SortUtil.swap(queue,1,size--); \.Q"fd?a_D  
fixDown(1); <PJwBA%{  
} ^V>sNR  
file://fixdown [h,T.zpa  
private void fixDown(int k) { G?8,&jP~T  
int j; #nn2odR  
while ((j = k << 1) <= size) { J}<k`af  
if (j < size %26amp;%26amp; queue[j] j++; O7q-MeMM  
if (queue[k]>queue[j]) file://不用交换  aA0aW=R  
break; KWhw@y-5j@  
SortUtil.swap(queue,j,k); Ks!.$y:x  
k = j; Po=)jkW  
} :^?ZVi59j  
}  ZY keW  
private void fixUp(int k) { m"@M~~bh  
while (k > 1) { <W\~A$  
int j = k >> 1; k(hes3JV  
if (queue[j]>queue[k]) P1H`NOC  
break; DA[-( s  
SortUtil.swap(queue,j,k); nG{j x_{`  
k = j; O/l|\n  
} !L-.bve!  
} '{U56^b]  
&~^"yo#b  
} g8}/Ln*W'  
uVOOw&q_  
} )Q(tryiSi  
+B c/@.Q'  
SortUtil: B 2&fvv?  
Wc03Sv&FZ  
package org.rut.util.algorithm; =^=9z'u"=  
&bnF{~<\  
import org.rut.util.algorithm.support.BubbleSort; uXu'I  
import org.rut.util.algorithm.support.HeapSort; PS(9?rX#+  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1 dI  
import org.rut.util.algorithm.support.ImprovedQuickSort; ma?569Z8~0  
import org.rut.util.algorithm.support.InsertSort; MdZ7Yep  
import org.rut.util.algorithm.support.MergeSort; r 'pFHX  
import org.rut.util.algorithm.support.QuickSort; 6$ @Pk<w  
import org.rut.util.algorithm.support.SelectionSort; <hQ@]2w$  
import org.rut.util.algorithm.support.ShellSort; 'Ys"yY@  
:3{@LOil^  
/** yBht4"\Al  
* @author treeroot esbxx##\  
* @since 2006-2-2 x\;`x$3t  
* @version 1.0 BP*gnXj  
*/ \f0I:%-  
public class SortUtil { Lg_y1Mu7o  
public final static int INSERT = 1; pShSK Rg  
public final static int BUBBLE = 2; #qm<4]9 1  
public final static int SELECTION = 3; aztP`S$h  
public final static int SHELL = 4; SM! [ yC  
public final static int QUICK = 5; 3 +BPqhzf  
public final static int IMPROVED_QUICK = 6; RYS]b[-xZz  
public final static int MERGE = 7; htlsU*x  
public final static int IMPROVED_MERGE = 8; fC]+C(*d  
public final static int HEAP = 9; ]n\WCU ]0  
:a#]"z0  
public static void sort(int[] data) { 1:q55!b  
sort(data, IMPROVED_QUICK); RAXqRP,iw  
} =EsKFt"  
private static String[] name={ nLQ 3s3@1>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" f9&D0x?  
}; VH,k EbJ  
bq<QUw=]q&  
private static Sort[] impl=new Sort[]{ B58H7NH ;G  
new InsertSort(), X f!Bsp#\g  
new BubbleSort(), peR=J7  
new SelectionSort(), -H'_%~OV(  
new ShellSort(), JR'Q Th:z  
new QuickSort(), ^X"G~#v=q  
new ImprovedQuickSort(), ;QREwT~H  
new MergeSort(), =n9adq  
new ImprovedMergeSort(), Nd^9.6,JU  
new HeapSort() 4#;rv$ {  
}; jr" yIC_  
h_* =_2|}  
public static String toString(int algorithm){ Xdq2.:\  
return name[algorithm-1]; Y@M=6G  
} \C/`?"4w  
!ny; YV  
public static void sort(int[] data, int algorithm) { sjWhtd[fgG  
impl[algorithm-1].sort(data); 3f eI   
} 8Tt2T} Y  
DY~~pi~  
public static interface Sort { *z` {$hc  
public void sort(int[] data); V1xpJ  
} `: i|y  
UyD=x(li  
public static void swap(int[] data, int i, int j) { <4C`^p  
int temp = data; :NA cad  
data = data[j]; Q%o   
data[j] = temp; q+WOnTS  
} _+z@Qn?#6h  
} J j yQ  
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