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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。 ;;6\q!7`  
插入排序: Qf~| S9,  
4Qhx[Hv>(  
package org.rut.util.algorithm.support; S `wE$so>  
S r[IoF)  
import org.rut.util.algorithm.SortUtil; 9 G((wiE  
/** x/[8Wi,yB  
* @author treeroot K5+!(5V~  
* @since 2006-2-2 %)dI2 J^Xf  
* @version 1.0 :3 PGf  
*/ -|$*l Q  
public class InsertSort implements SortUtil.Sort{ e Ri!\Fx  
_jk|}IB;X  
/* (non-Javadoc) ]t7ClT)n!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w=gQ3j#s  
*/ U!_sh<  
public void sort(int[] data) { 7~lB}$L  
int temp; NB3/A"}"02  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `lvh\[3^  
} s V&`0N  
} &8juS,b  
} 78^Y;2 P]W  
l4DeX\ly7f  
} SUSc  
0ZFB4GL  
冒泡排序: ^U" q|[qy  
vFR 1UPF  
package org.rut.util.algorithm.support; #[C< J#;  
=sL(^UISl  
import org.rut.util.algorithm.SortUtil; 6O%=G3I  
cy9N:MR(c  
/** cyDiA(ot&  
* @author treeroot ~S! L!qY  
* @since 2006-2-2 -aA<.+  
* @version 1.0 my=*zziN  
*/ ?! _u,sT  
public class BubbleSort implements SortUtil.Sort{ YlG; A\]k  
E#8J+7  
/* (non-Javadoc) .!!79 6hS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q^u6f?B  
*/ z{@= _5;  
public void sort(int[] data) { A"`L~|&  
int temp; M3)v-"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ R<_mK33hd  
if(data[j] SortUtil.swap(data,j,j-1); h#vL5At  
} j}i,G!-u  
} d|R HG  
} W&WB@)ie  
} KPD@b=F  
X"laZd947>  
} (=6P]~,  
VvzPQk  
选择排序: xAFek;GY?  
fYv ;TV>73  
package org.rut.util.algorithm.support; 5 1v r^  
DIL)7K4  
import org.rut.util.algorithm.SortUtil; D[+|^,^>  
|>M-+@g j  
/** ;CLR{t(N#V  
* @author treeroot ngtuYASc  
* @since 2006-2-2 ks)fQFSbu  
* @version 1.0 aA7S'[NjB  
*/ Yjpb+}  
public class SelectionSort implements SortUtil.Sort { ;|2U f   
S6= \r{V  
/* 27}.s0{D  
* (non-Javadoc) 4u7c7K>\Y  
* m>g}IX&K'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o:p{^D@#k  
*/ Qf/j:  
public void sort(int[] data) { Jv-zB]3&  
int temp; 2pVVoZV.<  
for (int i = 0; i < data.length; i++) { j*zB { s K  
int lowIndex = i; sxf}Mmsk  
for (int j = data.length - 1; j > i; j--) { n5/ZJur  
if (data[j] < data[lowIndex]) { kO /~i  
lowIndex = j; H0 {Mlu9  
} bWhJ^L D  
} bkJwPs  
SortUtil.swap(data,i,lowIndex); hhN(;.  
} ?*B;514  
} t sC z+MP  
 ^xBb$  
} F Bd+=bx,Z  
FjK Ke7  
Shell排序: =MQ2sb  
X20<r?^,,  
package org.rut.util.algorithm.support; :7zI3Ml@7  
1c1e+H  
import org.rut.util.algorithm.SortUtil; EU`' 8*4  
V3aY]#Su  
/** B3ohHxHu  
* @author treeroot q8&4=eV\A  
* @since 2006-2-2 \JF57t}Zk  
* @version 1.0 nS?S6G5h  
*/ UHTb61Gs  
public class ShellSort implements SortUtil.Sort{ ~hxeD" w  
Y- z~#;  
/* (non-Javadoc) .H*? '*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4nX'a*'D~}  
*/ W$x K^}  
public void sort(int[] data) { n^g-`  
for(int i=data.length/2;i>2;i/=2){ >KH(nc$  
for(int j=0;j insertSort(data,j,i); !XG/,)A  
} { &6l\|  
} V}3~7(   
insertSort(data,0,1); 6%Cna0x:&  
} b}"vI Rz  
6 d{D3e[p^  
/** :Kt{t46)  
* @param data *J*zml3  
* @param j ;h*"E(P p  
* @param i .)oQM:F (h  
*/ d#M?lS>  
private void insertSort(int[] data, int start, int inc) { NK*:w *SOI  
int temp; VLl&>Pbe-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [U+<uZzOC  
} J:M<9W  
} FQv02V+&<  
} d1C/u@8^  
)%-\hl]  
} C/grrw  
\, X?K  
快速排序: OP\^c  
O~c+$(  
package org.rut.util.algorithm.support; ~a0d .dU  
r;5 AY  
import org.rut.util.algorithm.SortUtil; dqK  
\Ho#[k=y*/  
/** -v/?>  
* @author treeroot AmrJ_YP/t~  
* @since 2006-2-2 3oNt]2w/'  
* @version 1.0 \dQ2[Ek  
*/ [{Klv&>_/  
public class QuickSort implements SortUtil.Sort{ b W`)CWd  
`s|\" @2  
/* (non-Javadoc) _YD<Q@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +eH=;8  
*/ [jmAMF<F  
public void sort(int[] data) { +L<w."WG  
quickSort(data,0,data.length-1); 9h)P8B.>M  
} eN7yjd'Y6  
private void quickSort(int[] data,int i,int j){ PT= 2LZ  
int pivotIndex=(i+j)/2; QjT#GvHY  
file://swap Xl '\krz  
SortUtil.swap(data,pivotIndex,j); =-#iXP@  
_cnrGi}T  
int k=partition(data,i-1,j,data[j]); ZS 7)(j$.  
SortUtil.swap(data,k,j); YpbdScz  
if((k-i)>1) quickSort(data,i,k-1); 5,I*F9[3  
if((j-k)>1) quickSort(data,k+1,j); u]+ +&~i  
Vo58Nz:%  
} q0xE&[C[M  
/** Luu-c<*M  
* @param data tL 9e~>,`  
* @param i 55)ep  
* @param j p-ii($~ }  
* @return v6, o/3Ex  
*/ 2oNPR+ -  
private int partition(int[] data, int l, int r,int pivot) { itvy[b-*  
do{ SJY"]7  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); T<_1|eH  
SortUtil.swap(data,l,r); e^ K=8IW  
} FCw VVF0 y  
while(l SortUtil.swap(data,l,r); 2* cKFv{  
return l; WLA_YMlA  
} RdpQJ)3F  
K <fq=:I3  
} v \L Ip  
~wQ WWRk  
改进后的快速排序: bB[*\  
}j5@\c48  
package org.rut.util.algorithm.support; I(r5\A=   
~(L<uFU V  
import org.rut.util.algorithm.SortUtil; ZYp-dlEXq  
:/?R9JVI  
/** {  /Q?  
* @author treeroot Y$DgL h  
* @since 2006-2-2 *1 eTf  
* @version 1.0 -V)5Tr=  
*/ $y |6<  
public class ImprovedQuickSort implements SortUtil.Sort { A_$Mt~qKi^  
mZ.6Njb  
private static int MAX_STACK_SIZE=4096; "{1}  
private static int THRESHOLD=10; fCo2".Tk  
/* (non-Javadoc) c`[uQXv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nCmrt*&}  
*/ d~oWu [F*  
public void sort(int[] data) { 3t}o0Ai9  
int[] stack=new int[MAX_STACK_SIZE]; >w2WyYJYH  
MjeI?k}LJ  
int top=-1; #esu@kMU`  
int pivot; .J! $,O@  
int pivotIndex,l,r; 7'l{I'Z  
x#xO {  
stack[++top]=0; ;@UX7NA  
stack[++top]=data.length-1; _-2n3py  
nJ`a1L{N  
while(top>0){ Yka yT0!  
int j=stack[top--]; OKH~Y-%<  
int i=stack[top--]; InGbV+ I  
lb XkZ,  
pivotIndex=(i+j)/2; qSs^}eN  
pivot=data[pivotIndex]; rcb/X`l=  
rG'k<X~7  
SortUtil.swap(data,pivotIndex,j); YSUH*i/%  
pzp"NKx i  
file://partition Zvw3C%In  
l=i-1; 9MlfZsby  
r=j; \7?MUa.4  
do{ AZ@Zo'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); YedipYG9;  
SortUtil.swap(data,l,r); q|_ 5@Ly  
} !ES#::;z?  
while(l SortUtil.swap(data,l,r); LR?#H)$  
SortUtil.swap(data,l,j); wEn&zZjx  
ktJLp Z<0O  
if((l-i)>THRESHOLD){ wOl-iN=  
stack[++top]=i; SYhspB  
stack[++top]=l-1; %3B>1h9N  
} f v7g93  
if((j-l)>THRESHOLD){ ml \yc'  
stack[++top]=l+1; PX{~!j%n  
stack[++top]=j; 7)X&fV6<8  
} Q`fA)6U  
/hy!8c7  
} dD2e"OIX  
file://new InsertSort().sort(data); dK`O,[}  
insertSort(data); w)c#ZJHG  
} K>~cY%3^i  
/** ,#FH8%Yf  
* @param data G U/k^ Qy  
*/ NjMLq|X  
private void insertSort(int[] data) { ATkqzE`;  
int temp; #6Ph"\G/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8*){*'bf  
} .aRxqFi_  
} 1;9E*=  
} |?b"my$g$  
s+t eYL#Zi  
} F4l6PGxF&\  
~a|Q[tiV]  
归并排序: yKy)fn!  
<%5uzlp  
package org.rut.util.algorithm.support; 545xs`Q_  
~}l,H:jk@  
import org.rut.util.algorithm.SortUtil; `I:,[3_/   
+004 2Yi  
/** LOo#  
* @author treeroot mM%BO(X{=  
* @since 2006-2-2 mT$tAwzTC{  
* @version 1.0 "N"k8,LH  
*/ _Dt TG<E  
public class MergeSort implements SortUtil.Sort{ , |B\[0p  
&BR?;LD  
/* (non-Javadoc) ?2/M W27w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bd[}A9O[  
*/ c>k6i?u:X7  
public void sort(int[] data) { cHd39H9  
int[] temp=new int[data.length]; d$ 7 b  
mergeSort(data,temp,0,data.length-1); )y Y;%  
} a"N_zGf2$  
Vp94mi#L }  
private void mergeSort(int[] data,int[] temp,int l,int r){ : \`MrI^  
int mid=(l+r)/2; =l_"M  
if(l==r) return ; ~1!kU 4  
mergeSort(data,temp,l,mid); ~hX'FV  
mergeSort(data,temp,mid+1,r); lO@Ba;x  
for(int i=l;i<=r;i++){ 51usiOq  
temp=data; :S2MS{>Mo  
} eT?LMBn\  
int i1=l; +t6m>IBu  
int i2=mid+1; t, YAk ?}  
for(int cur=l;cur<=r;cur++){ hY'%SV p  
if(i1==mid+1) ;sJ2K"c  
data[cur]=temp[i2++]; <C xet~x  
else if(i2>r) &"0[7zgYQz  
data[cur]=temp[i1++]; 'D{abm0  
else if(temp[i1] data[cur]=temp[i1++]; Q)8t;Kx  
else 7 4UE-H)  
data[cur]=temp[i2++]; XcneH jpR  
} );LwWKa  
} PUArKBYM-  
$cCB%}  
} 3E9j%sYk  
CAO{$<M5m  
改进后的归并排序: ;c}];ZU3G  
vnpX-c  
package org.rut.util.algorithm.support; ,iy   
n&JP/P3Y  
import org.rut.util.algorithm.SortUtil; dy'?@Lj;  
B&D z(Bs  
/** jz0\F,s  
* @author treeroot &Gl&m@-j  
* @since 2006-2-2 C I0^eaFs  
* @version 1.0 Czn7,KE8X  
*/ 4v$AM8/o  
public class ImprovedMergeSort implements SortUtil.Sort { i{0_}"B  
#a:C=GV;4  
private static final int THRESHOLD = 10; N<%,3W_-_  
:Tl?yG F  
/* {5`?0+  
* (non-Javadoc) WdnP[x9  
* @TDcj~oR ?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eU0-_3gN_  
*/ [5-5tipvWp  
public void sort(int[] data) { yFqC-t-i  
int[] temp=new int[data.length]; pj6Cvq4bD  
mergeSort(data,temp,0,data.length-1); M IJ~j><L  
} Sq QB>;/p  
zKr(Gt8  
private void mergeSort(int[] data, int[] temp, int l, int r) { nm.d.A/]Z  
int i, j, k; cx) EFy.  
int mid = (l + r) / 2; }vIm C [  
if (l == r) .}wir,  
return; ]Re<7_xt  
if ((mid - l) >= THRESHOLD) xOlkG*3c  
mergeSort(data, temp, l, mid); g11K?3*%Q  
else g(^l>niF:  
insertSort(data, l, mid - l + 1); =\.|'  
if ((r - mid) > THRESHOLD) w8Yff[o  
mergeSort(data, temp, mid + 1, r); |Sq>uC)  
else $G[##j2  
insertSort(data, mid + 1, r - mid); b :00w["  
JZ [&:  
for (i = l; i <= mid; i++) { L`v,:#Y   
temp = data; q)X&S*-<o~  
} w93,N+es6  
for (j = 1; j <= r - mid; j++) { *yx:nwmo  
temp[r - j + 1] = data[j + mid]; FqfeH_-U  
} l(W3|W#P  
int a = temp[l]; G 2##M8:U0  
int b = temp[r]; OJaU,vQ#  
for (i = l, j = r, k = l; k <= r; k++) { Z"u/8  
if (a < b) { $9/r*@bu8d  
data[k] = temp[i++]; $}@l l^  
a = temp; Yc}b&  
} else { \T?O.  
data[k] = temp[j--]; 9)qx0  
b = temp[j]; V'B 6C#jT  
} FgxQ}VvlH  
} 0Qz \"gr  
} v)06`G  
U<x3=P  
/** 3 0Z;}<)9  
* @param data P%c<0y"O:>  
* @param l 9^n ]qg^  
* @param i pFh2@O  
*/ D? ($R9t  
private void insertSort(int[] data, int start, int len) { LCt m@oN  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Ue7~rPdlR  
} SL*(ZEn"  
} 4-MA!&  
} eM}Xn^}  
} WW.=>]7;  
BshS@"8r  
堆排序: E+gUzz5  
O;~1M3Ii  
package org.rut.util.algorithm.support; 7K~=QEc  
)u$A!+fo  
import org.rut.util.algorithm.SortUtil; YG_3@`-<  
YeQX13C"Z  
/** :3k(=^%G!  
* @author treeroot Q["}U7j  
* @since 2006-2-2 R[b?kT-%  
* @version 1.0 8mi IlB  
*/ +.=a R<Q  
public class HeapSort implements SortUtil.Sort{ ]du pU"VV  
*k/_p ^  
/* (non-Javadoc) B*{CcQ<5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vCJjZ%eO%D  
*/ +#O?sI#  
public void sort(int[] data) { &wJ"9pQ~6E  
MaxHeap h=new MaxHeap(); B}vI<?c  
h.init(data); rei<{woX  
for(int i=0;i h.remove(); /2c?+04+  
System.arraycopy(h.queue,1,data,0,data.length); vR-/c  
} Gc>\L3u  
u+*CpKR}  
private static class MaxHeap{ o_cj-  
5i0<BZDTef  
void init(int[] data){ B!:(*lF  
this.queue=new int[data.length+1]; _z_uz \#,  
for(int i=0;i queue[++size]=data; wi!Ml4Sb  
fixUp(size); {2,V3*NF  
} LWY`J0/  
} M/BBNT  
O!a5  
private int size=0; bz@4obRqf  
%9IM|\ulp  
private int[] queue; :U~[%]  
{pVD`#Tl[  
public int get() { *w!H -*`  
return queue[1]; 9 eP @}C6  
} +s`n]1HC  
[hs{{II  
public void remove() { rVkHo*Q  
SortUtil.swap(queue,1,size--); UXd\Q''  
fixDown(1); pJ{sBp_$  
} _r&#Snp  
file://fixdown  @521 zi  
private void fixDown(int k) { zITXEorF!J  
int j; qh=lF_%uj  
while ((j = k << 1) <= size) { 9khD7v   
if (j < size %26amp;%26amp; queue[j] j++; hNQ,U{`;^  
if (queue[k]>queue[j]) file://不用交换 6,k}v:  
break; !dZHG R  
SortUtil.swap(queue,j,k); A w83@U  
k = j; L|v1=qNH4  
} En1pz\'  
} zD?<m J`  
private void fixUp(int k) { :z.< ||T  
while (k > 1) { JIK;/1  
int j = k >> 1; &D/_@\ 0  
if (queue[j]>queue[k]) yHCBf)N7\  
break; 0%vXPlfnY  
SortUtil.swap(queue,j,k); $"sf%{~  
k = j; <jV_J+#  
} KnlVZn[3t  
} /<GygRs  
qUCiB}  
} GeE|&popO  
k*M1m'1  
} m|'TPy  
p 3X>  
SortUtil: y>|7'M*+  
&}rh+z  
package org.rut.util.algorithm; [~ fJ/  
vQztD _bX%  
import org.rut.util.algorithm.support.BubbleSort; `6UW?1_Z5  
import org.rut.util.algorithm.support.HeapSort; 9hcZbM]  
import org.rut.util.algorithm.support.ImprovedMergeSort; uRJLSt9m  
import org.rut.util.algorithm.support.ImprovedQuickSort; f ^z7K  
import org.rut.util.algorithm.support.InsertSort; (ZDRjBth[  
import org.rut.util.algorithm.support.MergeSort; ! XA07O[@  
import org.rut.util.algorithm.support.QuickSort; e%"L79Of6)  
import org.rut.util.algorithm.support.SelectionSort; ceAK;v o  
import org.rut.util.algorithm.support.ShellSort; lv,<[Hw1  
< jfi"SJu  
/**  u"tv6Qp  
* @author treeroot A2]N :=  
* @since 2006-2-2 "#(]{MY  
* @version 1.0 IS"UBJ6p  
*/ 7x`uGmp1  
public class SortUtil { FD[* mCGZ  
public final static int INSERT = 1; )'92{-A0  
public final static int BUBBLE = 2; (eHvp  
public final static int SELECTION = 3; <Cm:4)~  
public final static int SHELL = 4; )t0t*xu#  
public final static int QUICK = 5; IeE+h-3p  
public final static int IMPROVED_QUICK = 6; eo"6 \3z  
public final static int MERGE = 7; l1a=r:WhH  
public final static int IMPROVED_MERGE = 8; .hnGHX  
public final static int HEAP = 9; 8\/E/o3  
^KmyB6Yg  
public static void sort(int[] data) { BT >8  
sort(data, IMPROVED_QUICK); Z3=t"  
} ACc.&,!IZ  
private static String[] name={ >AV?g8B;  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" -49OE*uF  
}; _<&IpT{w+  
KD=T04v  
private static Sort[] impl=new Sort[]{ tvZpm@1  
new InsertSort(), &!a[rvtZ+  
new BubbleSort(), Jt@7y"<  
new SelectionSort(), P6dIU/w  
new ShellSort(), h$y1"!N(  
new QuickSort(), (:-=XR9A`  
new ImprovedQuickSort(), yin"+&<T  
new MergeSort(), }B^KV#_{S  
new ImprovedMergeSort(), L9&Z?$6J_p  
new HeapSort() t: r   
}; CZt)Q4  
| \C{R  
public static String toString(int algorithm){ -7>vh|3  
return name[algorithm-1];  jmz, 1[  
} ,@8>=rT  
=2# C{u.  
public static void sort(int[] data, int algorithm) { U5%EQc-"P  
impl[algorithm-1].sort(data); lhKd<Y"  
} 9["yL{IPe  
:^%My]>T  
public static interface Sort {  Jcy  
public void sort(int[] data); Jx(%t<2  
} Q];+?Pu.  
b> Iq k  
public static void swap(int[] data, int i, int j) { 3;@t {rIin  
int temp = data; rer=o S  
data = data[j]; 77.5 _  
data[j] = temp; FX4](oM  
} RV.*_FG  
} 52,pCyU  
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