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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。 J;_JH lK  
插入排序: `(o1&  
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package org.rut.util.algorithm.support; g\ *gHHa  
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import org.rut.util.algorithm.SortUtil; R?&S]?H  
/** 6/#= dv  
* @author treeroot [Q 2t,tQx  
* @since 2006-2-2 q}\\p  
* @version 1.0 GF/p|I D  
*/ UN>hJN;c  
public class InsertSort implements SortUtil.Sort{ zRE7 w:  
Zp__  
/* (non-Javadoc) acGmRP9g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E!Fy2h>[Z  
*/ 0|^x[dh  
public void sort(int[] data) { < m9O0  
int temp; 1;:2=8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -ZyFUGd%  
} |g'sRTKJ  
} <RhKlCP  
} i*U\~CZjT  
2Vu|uZd  
} ]7u8m[@  
)uX:f8  
冒泡排序: XIp9=jhSR  
fnmZJJ,Q  
package org.rut.util.algorithm.support; LiB0]+wzj  
n3|~X/I  
import org.rut.util.algorithm.SortUtil; ZXU e4@qfl  
s*8hN*A/,  
/** nO|S+S_9  
* @author treeroot zA"D0fr  
* @since 2006-2-2 QOF;j#H^  
* @version 1.0 M3t_!HP}!  
*/ f`IgfJN  
public class BubbleSort implements SortUtil.Sort{ "rKIXy  
!<YRocQY  
/* (non-Javadoc) quKD\hL$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uRL3v01?H0  
*/ AV2q*  
public void sort(int[] data) { 5r+0^UAO:J  
int temp; %DV@2rC<  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S|>Up%{n[  
if(data[j] SortUtil.swap(data,j,j-1); I Mv^ 9T:  
} x1}q!)e  
} q;>BltU  
} d#b{4zF"  
}  q?^0 o\  
q!H 3JL  
} #/tdZ0  
fF d9D=EW.  
选择排序: j qdI=!H  
G1nW{vce  
package org.rut.util.algorithm.support; i L m1l  
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import org.rut.util.algorithm.SortUtil; }DM2#E`_  
=:g^_Hy  
/** hx2C<;s4  
* @author treeroot .gPsJ?b  
* @since 2006-2-2 gOWyV@  
* @version 1.0 mhVoz0%1X  
*/ | 5L1\O8#  
public class SelectionSort implements SortUtil.Sort { gP`!MlY@  
Q./ lX:  
/* $@Ay0GEI"  
* (non-Javadoc) `-/l$A} U  
* (jm.vL&5j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ILO+=xU  
*/ LQh\j|e9  
public void sort(int[] data) { F d\XDc[g  
int temp; V?O%kd  
for (int i = 0; i < data.length; i++) { o6y,M!p@  
int lowIndex = i; y(]|jRo  
for (int j = data.length - 1; j > i; j--) { dH/t|.%  
if (data[j] < data[lowIndex]) { :U:7iP:  
lowIndex = j; z\E "={P&  
} )4`Ml*7x  
} QhG-1P3#  
SortUtil.swap(data,i,lowIndex); Gzir>'d2'V  
} bMUIe\/v[  
}  vV[dJ%  
5"gRz9Ta`  
} ATzNV=2s  
ZKR z=(  
Shell排序: (k5DbP[  
_eQ P0N  
package org.rut.util.algorithm.support; a?Y1G3U'  
i]53A0l  
import org.rut.util.algorithm.SortUtil; vl5n%m H>^  
O7dFz)$  
/** cyhD%sB[D9  
* @author treeroot 8@fDn(]w  
* @since 2006-2-2 O9|'8"AF  
* @version 1.0 epR~Rlw>2  
*/ Asl H V@K  
public class ShellSort implements SortUtil.Sort{ L@z !,r,  
r;XQ i  
/* (non-Javadoc) Uo @NK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E?XCL8NC  
*/ bF KP V%`  
public void sort(int[] data) { jccW8g~ ~  
for(int i=data.length/2;i>2;i/=2){ +_g T|vlU  
for(int j=0;j insertSort(data,j,i); jSFN/C.9h  
} )T64(_TE  
} {IMzR'PN  
insertSort(data,0,1); 0lRH Yu  
} pq[mM!;#v  
w}.'Tebu  
/** :xw3b)KS  
* @param data I:e2sE ":  
* @param j f)zg&Ib  
* @param i Lm wh`oOl  
*/ ;ULC|7rL  
private void insertSort(int[] data, int start, int inc) { ' 4~5ez|:  
int temp; H<;Fb;b  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); f^)uK+:.  
} 3] qlz?5  
} O&,O:b:@  
} hf<$vRti>  
UPKi/)C;  
} MA+-2pMc|7  
^-IsK#r.k  
快速排序: ^2r}_ AX  
kppRQ Q*[  
package org.rut.util.algorithm.support; +?iM$}8!U  
<s-@!8*(  
import org.rut.util.algorithm.SortUtil; ?*'$(}r3  
,8I AhQa  
/** qP"JNswI_  
* @author treeroot X[Ek'=}  
* @since 2006-2-2 be:phS4vz  
* @version 1.0 -L9R&r#_e  
*/ 8'lhp2#h  
public class QuickSort implements SortUtil.Sort{ <KwK tgzs  
Uk:.2%S2  
/* (non-Javadoc) 16QbB;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z`/.v&<>V  
*/ #Q3PzDfj  
public void sort(int[] data) { RW 7oL:$dt  
quickSort(data,0,data.length-1); %?f:"  
} $a^isd4  
private void quickSort(int[] data,int i,int j){ qd+[ShrhqZ  
int pivotIndex=(i+j)/2; ,Us2UEWNv  
file://swap >J}n@MZ  
SortUtil.swap(data,pivotIndex,j); 5!ubY 6Ph  
HJ qQlEq  
int k=partition(data,i-1,j,data[j]); z"K( bw6  
SortUtil.swap(data,k,j); q{GSsDo-:V  
if((k-i)>1) quickSort(data,i,k-1); p%"yBpSK  
if((j-k)>1) quickSort(data,k+1,j); b;L>%;  
}E5#X R  
} ay(!H~q_U  
/** )@qup _M@  
* @param data (a}  
* @param i fcICFReyV  
* @param j W3/ 7BW`  
* @return 5)yOw|Bd  
*/ ChTXvkdH  
private int partition(int[] data, int l, int r,int pivot) { ,iVPcza  
do{ ]&:b<]K3  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kV ,G,wo  
SortUtil.swap(data,l,r); h1XMx'}B  
} (.1 rtj  
while(l SortUtil.swap(data,l,r); 5}eQaW48  
return l; ,k~j6Z  
} umjhG6  
"]m*816'  
} v'@b.R,  
CofH}-  
改进后的快速排序: ns#~}2"d  
_Dj<Eu_  
package org.rut.util.algorithm.support; 23-t$y]  
&G/|lv>j  
import org.rut.util.algorithm.SortUtil; u<]mv  
HmExfW  
/** &|N%#pYS  
* @author treeroot vWl[l -E  
* @since 2006-2-2 D#7_T KX  
* @version 1.0 ,?k%jcR  
*/ 5#0e={X  
public class ImprovedQuickSort implements SortUtil.Sort { "#twY|wW  
rKzlK 'U  
private static int MAX_STACK_SIZE=4096; P>Q{He:  
private static int THRESHOLD=10; %l} Q?Z  
/* (non-Javadoc) q[G/}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #%^\\|'z  
*/ (`6%og#8  
public void sort(int[] data) { B:-U`CHHQ  
int[] stack=new int[MAX_STACK_SIZE]; -@2'I++"@  
# SQvXMT  
int top=-1; {y-2  
int pivot; &xiOTkqB  
int pivotIndex,l,r; S<nP80C  
:p<kQ4   
stack[++top]=0; X0WNpt&h  
stack[++top]=data.length-1; 5g``30:o  
WRD A `  
while(top>0){ [5Fd P0  
int j=stack[top--]; i3Hz"Qs;  
int i=stack[top--]; Sty! atEWT  
dTN$y\   
pivotIndex=(i+j)/2; *bA+]&dj\  
pivot=data[pivotIndex]; R-pH Quu3  
u 1ZJHry  
SortUtil.swap(data,pivotIndex,j); mX&xn2}qZ"  
Hz?!BV0  
file://partition > z=Ou<,  
l=i-1; ~uI**{  
r=j; s=d+GMa  
do{ yGiP[d|tRc  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5vTv$2@  
SortUtil.swap(data,l,r); (=1q!c`  
} AkrTfi4hC  
while(l SortUtil.swap(data,l,r); ZXsYn  
SortUtil.swap(data,l,j); 1")FWN_K/T  
p9-0?(]  
if((l-i)>THRESHOLD){ lC#RNjDp/~  
stack[++top]=i; G02ox5X  
stack[++top]=l-1; e?V,fzg  
} ~G>jw"r  
if((j-l)>THRESHOLD){ bj@xqAGl  
stack[++top]=l+1; _>Pk8~m  
stack[++top]=j; iJdP>x  
} H9RGU~q4s[  
3Y z]8`C  
} 5W+{U8\  
file://new InsertSort().sort(data); +UxI{,L  
insertSort(data); {A|bBg1!  
} DVI7]+=nV  
/** ITyzs4"VV  
* @param data XHsd-  
*/ }^"0T-ua  
private void insertSort(int[] data) { :peqr!I+K  
int temp; naz:A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^7uX$  
} P,i"&9 8  
} G0}Dq M Ti  
} eC~ jgB  
U98_M)-%&  
} y%4 Gp  
P5xI  
归并排序: q IM  
Z>F@n Tzb>  
package org.rut.util.algorithm.support; k6@b|  
J58#$NC `'  
import org.rut.util.algorithm.SortUtil; 1otspOy  
9e~WK720=  
/** Z_FNIM0f  
* @author treeroot  c/ _yMN  
* @since 2006-2-2 rvic%bsk  
* @version 1.0 /D[dO6.  
*/ 2F1ZAl  
public class MergeSort implements SortUtil.Sort{ Y0@yD#,0~  
*Bs^NU.  
/* (non-Javadoc) ic-IN~J-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ASW4,%cl  
*/ ivfXat-  
public void sort(int[] data) { cC%j!8!  
int[] temp=new int[data.length]; R4b-M0H  
mergeSort(data,temp,0,data.length-1); %M9;I  
} iK!dr1:wSw  
KmQ^?Ad- C  
private void mergeSort(int[] data,int[] temp,int l,int r){ LeSHRoD  
int mid=(l+r)/2; 1Bg_FPu  
if(l==r) return ; 1}!L][(  
mergeSort(data,temp,l,mid); P-'_}*wxi  
mergeSort(data,temp,mid+1,r); "cMNdR1^,y  
for(int i=l;i<=r;i++){ /7gi/uh~-(  
temp=data; S[mM4et|  
} vZ@g@zB4o0  
int i1=l; |3;(~a)%  
int i2=mid+1; p<KIF>rf|  
for(int cur=l;cur<=r;cur++){ =_ y\Y@J  
if(i1==mid+1) xc;DdK=1X  
data[cur]=temp[i2++]; M)JADX  
else if(i2>r) +I5 2EXo  
data[cur]=temp[i1++]; Vl<9=f7[  
else if(temp[i1] data[cur]=temp[i1++]; |SQ|qbe=  
else  H4:ZTl_$  
data[cur]=temp[i2++]; < Dd%  
} W"Q!|#;l.  
} E-fr}R}  
',ZF5T5z@  
} 2n|CD|V$ux  
DyfsTx  
改进后的归并排序: Mra35  
QU T"z'  
package org.rut.util.algorithm.support; O*G1 QX  
l~J*' m2  
import org.rut.util.algorithm.SortUtil; Hx %$ X  
?TpUf  
/** /p)F>WR  
* @author treeroot Zu21L3  
* @since 2006-2-2 P~RhUKfd  
* @version 1.0 -7%X]  
*/ ^ve14mbF#.  
public class ImprovedMergeSort implements SortUtil.Sort { %d;<2b0  
GK?4@<fY  
private static final int THRESHOLD = 10; .9h)bf+  
8>NwCjN  
/* 7,'kpyCj  
* (non-Javadoc) ?NG=8.p  
* +=eR%|!@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 51by  
*/ ~W03{9(Vp8  
public void sort(int[] data) { 3c#s|qW  
int[] temp=new int[data.length]; XErUS80  
mergeSort(data,temp,0,data.length-1); ?Elg?)os  
} V8PLFt;  
$`ztiVu3  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2f{T6=SK  
int i, j, k; *(QH{!-$s  
int mid = (l + r) / 2; a1c1k}  
if (l == r) @dgH50o[  
return; WVX`<  
if ((mid - l) >= THRESHOLD) Qi9-z'  
mergeSort(data, temp, l, mid); E0l _--  
else \+nGOvM  
insertSort(data, l, mid - l + 1); 3`F) AWzdr  
if ((r - mid) > THRESHOLD) =Z,5$6%)  
mergeSort(data, temp, mid + 1, r); M#,Q ^rH#  
else j6g@tx^)'  
insertSort(data, mid + 1, r - mid);  8=;k"  
'bu)M1OLi  
for (i = l; i <= mid; i++) { >t  <pFh  
temp = data; OP! R[27>  
} ]@ M5_%p  
for (j = 1; j <= r - mid; j++) { 3l4NC03I&  
temp[r - j + 1] = data[j + mid]; SVWIEH0?  
} u[oUCTY  
int a = temp[l]; p_2pU)%  
int b = temp[r]; PmX2[7  
for (i = l, j = r, k = l; k <= r; k++) { >v+jh(^  
if (a < b) { E D"!n-Hq  
data[k] = temp[i++]; b]Z@^<_E  
a = temp; Yu3zM79'k  
} else { }< 5F  
data[k] = temp[j--]; r"{<%e  
b = temp[j]; xJwG=$o  
} s9)8b$t]  
} c EnkU]  
} M+P$/Wk  
)3A{GZj#6  
/** ZKpvDH'  
* @param data w:i:~f .  
* @param l DcD{*t?x  
* @param i kv{}C)kt3  
*/ !Ng=Yk>3  
private void insertSort(int[] data, int start, int len) { }8K4-[\  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ZWUP^V  
} 3gZ8.8q3  
} 3_$w| ET  
} jXg  
} BJ}D%nm}  
P9Q~r<7n  
堆排序: !CTxVLl"F  
XMIbUbU k-  
package org.rut.util.algorithm.support; ~Bi_7 Q  
s1N?/>lmB  
import org.rut.util.algorithm.SortUtil; 23\RJpKb  
0&+k.Vg  
/** 9xI GV!  
* @author treeroot zYER  
* @since 2006-2-2 lSwcL  
* @version 1.0 ,:Z^$  
*/ &53]sFZ  
public class HeapSort implements SortUtil.Sort{ 3VO2,PCZ  
c}Z6V1]QP  
/* (non-Javadoc) J:*-gwv9*m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )u%je~Vw  
*/ ~&dyRt W4  
public void sort(int[] data) { feM6K!fL`  
MaxHeap h=new MaxHeap(); ZP\M9Ja  
h.init(data); bm~W EX  
for(int i=0;i h.remove(); C4$:mJ>y  
System.arraycopy(h.queue,1,data,0,data.length); Sl2iz?   
} -Apc$0ZsN  
}L=/A7Nk>  
private static class MaxHeap{ N "tFP9;K  
BR`ygrfe  
void init(int[] data){ df}r% i  
this.queue=new int[data.length+1]; <W8t|jt  
for(int i=0;i queue[++size]=data; 9m2, qr|  
fixUp(size); M9\#Aq&\i  
} "I6P=]|b  
} =W bOwI)u  
Bq\F?zk<  
private int size=0; g#]" hn  
3f.b\4 U  
private int[] queue; t_z>Cl^u  
%M F;`;1  
public int get() { K7knK  
return queue[1]; tc ;'oMUP  
} S^@S%Eg  
} p FQRSOZ  
public void remove() { .T<= z  
SortUtil.swap(queue,1,size--); 3981ie  
fixDown(1); VZr>U*J[:  
} B(a-k?  
file://fixdown v4,h&JLt  
private void fixDown(int k) { ?lGG|9J\  
int j; $4kH3+WJ  
while ((j = k << 1) <= size) { aimarU  
if (j < size %26amp;%26amp; queue[j] j++; ~)LH='|h\}  
if (queue[k]>queue[j]) file://不用交换 E907fX[R~  
break; Ix@&$!'k  
SortUtil.swap(queue,j,k); /@ !CKh`  
k = j; :o-,SrORM  
} E:sz$\Ht)  
} {N2g8W:  
private void fixUp(int k) { >WJf=F`_H  
while (k > 1) { K5ZC:Ks  
int j = k >> 1; l:0s2  
if (queue[j]>queue[k]) oBQ#eW aY  
break; p^<yj0Y  
SortUtil.swap(queue,j,k); ,[S+T.Cu  
k = j; ~LJY6A@y  
} ptatzp]c#  
} 5Wyz=+?m|  
qf@q]wtar  
} 8KB>6[H!wE  
`e9$,h|4  
} Q?ahr~qo  
 B[=(#W  
SortUtil: geQ{EwO8n  
gTgMqvt  
package org.rut.util.algorithm; P./V6i<:  
S= R7`a<.5  
import org.rut.util.algorithm.support.BubbleSort; +;$oJJ  
import org.rut.util.algorithm.support.HeapSort; ](tx<3h  
import org.rut.util.algorithm.support.ImprovedMergeSort; t*z~5_/  
import org.rut.util.algorithm.support.ImprovedQuickSort; 'E/*d2CDM(  
import org.rut.util.algorithm.support.InsertSort; 0iULCK  
import org.rut.util.algorithm.support.MergeSort; f.aSKQD  
import org.rut.util.algorithm.support.QuickSort; `p;eIt  
import org.rut.util.algorithm.support.SelectionSort; M;cO0UIwO  
import org.rut.util.algorithm.support.ShellSort; 0&qr  
xq-17HKs  
/** IdYzgDH  
* @author treeroot d(vsE%/!  
* @since 2006-2-2 EXP%Mk/  
* @version 1.0 2LrJ>Mi  
*/ ~$' \L  
public class SortUtil { ,NnhHb2\  
public final static int INSERT = 1; 3iw{SEY  
public final static int BUBBLE = 2; Nx{$}  
public final static int SELECTION = 3; ju}fL<<e  
public final static int SHELL = 4; 0TfS=scT  
public final static int QUICK = 5; a#mNE*Dg  
public final static int IMPROVED_QUICK = 6; h\plQ[T  
public final static int MERGE = 7; I1[g&9,  
public final static int IMPROVED_MERGE = 8; A7(hw~+@  
public final static int HEAP = 9; 7.DtdyM  
-.g|l\  
public static void sort(int[] data) { NCxqh<  
sort(data, IMPROVED_QUICK); RoCfJ65  
} 0|R# Tb;Y  
private static String[] name={ R@Gq)P9?  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %6AW7q t  
}; KD/V aN  
pF ^#}L  
private static Sort[] impl=new Sort[]{ xs\!$*R  
new InsertSort(), uB!kM  
new BubbleSort(), *~m+Nc`D,N  
new SelectionSort(), Q{k At%  
new ShellSort(), 8G5Da|\  
new QuickSort(), >iS`pb  
new ImprovedQuickSort(), 'J,T{s1J  
new MergeSort(), !61Pl/uQ  
new ImprovedMergeSort(), !LkW zn3  
new HeapSort() jV(6>BAI_  
}; d Le-nF  
.{;Y'Zc14S  
public static String toString(int algorithm){ RI68%ZoL  
return name[algorithm-1]; sXd8rj:o  
} rr#K"SP  
Vd=yr'?  
public static void sort(int[] data, int algorithm) { J8Yd1.Qj  
impl[algorithm-1].sort(data); `%09xMPu  
} _+ .\@{c  
o)OUWGjb/K  
public static interface Sort { qlA7tU2p&  
public void sort(int[] data); k`GA\&zt  
} J9K3s_SN  
^(* n]  
public static void swap(int[] data, int i, int j) { oI^4pwnh  
int temp = data; VCtH%v#S;.  
data = data[j]; PjN =k;  
data[j] = temp; ',GS#~  
} 4t)%<4  
} %pXAeeSY`;  
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