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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。 %/d1x  
插入排序: h@TP=  
:sttGXQX  
package org.rut.util.algorithm.support; q0b*#j  
DPkH:X  
import org.rut.util.algorithm.SortUtil; ,b:~Vpb1I  
/** ">5$;{;2r  
* @author treeroot {w@9\LsU  
* @since 2006-2-2 f`iDF+h<6  
* @version 1.0 9ji`.&#  
*/ u'^kpr`y  
public class InsertSort implements SortUtil.Sort{ MY^o0N  
;0`IFtz  
/* (non-Javadoc) y8Rq2jI;(e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) csA-<}S5]b  
*/ @1i<=r  
public void sort(int[] data) { Ko)f:=Qo  
int temp; 7EVB|gTp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bn7g!2  
} nb ?(zDJ8  
} cI&XsnY  
} 5vLA)Al3  
Mcq!QaO}&  
} 1vS-m x  
{vT9I4d8  
冒泡排序: 'dqecmB  
W0}FOfL9  
package org.rut.util.algorithm.support; Rd<K.7&A}  
>s )L(DHa"  
import org.rut.util.algorithm.SortUtil; 5hh6;)  
LnM$@  
/** ;%k C?Vzi  
* @author treeroot z`p9vlS[  
* @since 2006-2-2 ~z,qr09  
* @version 1.0 q,> C^p|2b  
*/ Hv2[=elc  
public class BubbleSort implements SortUtil.Sort{ cc8Q}   
4aW[`  
/* (non-Javadoc) $/$Hi U`.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6J">@+  
*/ F%.UpV,  
public void sort(int[] data) { 64vj6 &L  
int temp; Ktu~%)k%  
for(int i=0;i for(int j=data.length-1;j>i;j--){ nPDoK!r'  
if(data[j] SortUtil.swap(data,j,j-1); -<sW`HpD'  
} yYP>3]z  
} % [~0<uO  
} dn:\V?9  
} K=r~+4F  
9m\Yi  
} uKj(=Rqq  
KzJJ@D*4M]  
选择排序: Q- w_ @~  
/`0>U  
package org.rut.util.algorithm.support; m#-&<=  
ddbQFAQQQ  
import org.rut.util.algorithm.SortUtil; .&`apQD}  
QjD=JC+  
/** 1f'msy/  
* @author treeroot oKH+Q6S:  
* @since 2006-2-2 &C)97E  
* @version 1.0 gGN 6Yqj0  
*/ bAy\Sr #/  
public class SelectionSort implements SortUtil.Sort { H/Rzs$pnv  
-%Rbd0gVH\  
/* )."dqq^ q  
* (non-Javadoc) 4Xww(5?3  
* `m #i|8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m&z(2yb1  
*/ '=eVem=  
public void sort(int[] data) { fJ6Q:7  
int temp; $*LBZcL  
for (int i = 0; i < data.length; i++) { URt+MTU[  
int lowIndex = i; V F b  
for (int j = data.length - 1; j > i; j--) { )eqF21\  
if (data[j] < data[lowIndex]) { U3{4GmrT  
lowIndex = j; _/u(:  
} ((<\VQ,>(  
} {[hgSVN ;  
SortUtil.swap(data,i,lowIndex); 0cVxP)J+  
} mIPDF1= )  
} $RunGaX!=N  
KD\sU6  
} \ H#"  
a5/Dz&>j6  
Shell排序: G]{^.5  
|n^rI\ p%  
package org.rut.util.algorithm.support; .g?D3$|K  
>3~)2)Q  
import org.rut.util.algorithm.SortUtil; u:6R|%1fNn  
2\1bQ q\  
/** B =7maYeU  
* @author treeroot  cV_-Bcb  
* @since 2006-2-2 wAJ= rRI  
* @version 1.0 )]4=anJu@|  
*/ u^#e7u  
public class ShellSort implements SortUtil.Sort{ ZHlHnUo  
~B? Wg!  
/* (non-Javadoc) 2$`Y 4b3t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zL3zvOhu}  
*/ SoHaGQox  
public void sort(int[] data) { k*!iUz{]  
for(int i=data.length/2;i>2;i/=2){ +@H{H2J4  
for(int j=0;j insertSort(data,j,i); M{jq6c  
} `%EcQ}Nr  
} *-uzsq.W  
insertSort(data,0,1); wh2E$b(-  
} @,-D P41g  
O{Mn\M6  
/** :z *jl'L  
* @param data x9S9%JG :  
* @param j ?;.=o?e9  
* @param i @A<~bod  
*/ JfK4|{@  
private void insertSort(int[] data, int start, int inc) { SU6Aq?`@  
int temp; ^HtB!Xc  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Pl-9FLJ  
} "WO0 rh`  
} ?STO#<a  
} MZB}O" r  
{`T^&b k  
} ,nGQVb   
TtKKU4yp  
快速排序: ez)Ks`  
RCxwiZaf33  
package org.rut.util.algorithm.support; E H%hL5(  
td23Z1Elk#  
import org.rut.util.algorithm.SortUtil; KmM:V2@A$  
NV@$\ <  
/** m6]6 !_  
* @author treeroot %DA`.Z9 #  
* @since 2006-2-2 9sd}Z,l  
* @version 1.0 l4(FM}0X5}  
*/ &-X51O C  
public class QuickSort implements SortUtil.Sort{ 8V9OMOt!  
=dQ/^C_hj  
/* (non-Javadoc) 4\g[&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;DVg[#  
*/ z|Yt|W  
public void sort(int[] data) { Df:/r%  
quickSort(data,0,data.length-1); i1A<0W|  
} v-^tj}jA  
private void quickSort(int[] data,int i,int j){ |.&GmP  
int pivotIndex=(i+j)/2; rKd|s7l  
file://swap mZmEE2h  
SortUtil.swap(data,pivotIndex,j); (/!@ -]1  
~C>Q+tR8  
int k=partition(data,i-1,j,data[j]); _-^mxC|M  
SortUtil.swap(data,k,j); [TFp2B~)#  
if((k-i)>1) quickSort(data,i,k-1); 8lS RK%  
if((j-k)>1) quickSort(data,k+1,j); wzJdS}Yy!y  
n2Mpo\2  
} {6wXDZxv  
/** (TO<SY3AB  
* @param data W:6#0b"_#  
* @param i 25 :vc0  
* @param j n%i L+I  
* @return `D$^SHfyz  
*/ z"QXPIXPk  
private int partition(int[] data, int l, int r,int pivot) { yLK %lP  
do{ &0"*.:J9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &^uaoB0  
SortUtil.swap(data,l,r); G;ZN>8NB  
} RAws{<6T-  
while(l SortUtil.swap(data,l,r); }[MkJ21!  
return l; csxn" Dz\  
} .tyV =B:h  
51H6 W/$  
} }9#GJ:x`  
8bO+[" c  
改进后的快速排序: m}zXy\  
a? PH`5O  
package org.rut.util.algorithm.support; +7n vy^m  
pGy k61  
import org.rut.util.algorithm.SortUtil; w(t1m]pF[  
JO&RuAq  
/**  yOvV"x]  
* @author treeroot DIWyv-  
* @since 2006-2-2 EM!S ;i  
* @version 1.0 s*Z yr%R  
*/ O, :|  
public class ImprovedQuickSort implements SortUtil.Sort { 4mEJu  
/BvMNKb$$  
private static int MAX_STACK_SIZE=4096; TcJJ"[0  
private static int THRESHOLD=10; #F2DEo^0  
/* (non-Javadoc) burSb:JF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kM=&Tfpj  
*/ R!WDQGR(2  
public void sort(int[] data) { AN[pjC<  
int[] stack=new int[MAX_STACK_SIZE]; pS7y3(_  
rg]b$tL~  
int top=-1; @\xEK5SG  
int pivot; a|[f%T<<  
int pivotIndex,l,r; 3u^wK  
qe(C>qjMbG  
stack[++top]=0; :,R>e}lM  
stack[++top]=data.length-1; fQg^^ZXe"  
zxx9)I@?A  
while(top>0){ A&%7Z^Pp  
int j=stack[top--]; @,6*yyO  
int i=stack[top--]; "{H{-`Ni  
fb^R3wd$ff  
pivotIndex=(i+j)/2; nA.U'=`  
pivot=data[pivotIndex]; )FIFf;r  
>r,z^]-  
SortUtil.swap(data,pivotIndex,j); r<LWiM l?  
:eB+t`M  
file://partition ^T1caVb|>  
l=i-1; Us2> 5 :\  
r=j; ,1JQjsR   
do{ B9cWxe4R#  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); t7xJ "  
SortUtil.swap(data,l,r); /d Ua  
} KbK!4  
while(l SortUtil.swap(data,l,r); <mTo54g  
SortUtil.swap(data,l,j); YN:Sn\`D 8  
M 0RA&  
if((l-i)>THRESHOLD){ P 6ka'!z  
stack[++top]=i; ]~f-8!$$R  
stack[++top]=l-1; TeR bW  
} MTgf.  
if((j-l)>THRESHOLD){ [z= !OFdE  
stack[++top]=l+1; ZC<EPUV(  
stack[++top]=j; Sz')1<  
} p:{L fQ  
@KLX,1K  
} ncOl}\Q9  
file://new InsertSort().sort(data); ;:J"- p  
insertSort(data); /7,@q?v  
} `_ZbA#R,  
/** t U~q4$qqE  
* @param data RF4B ]Gqd  
*/ :6EX-Xyj  
private void insertSort(int[] data) { $ kMe8F_  
int temp; m] p]J_6A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~HT:BO$  
} REi"Aj=  
} CD^@*jH9"  
} '@\[U0?@K  
$M4_"!  
} 2_?VR~mA#  
s- 0Xt<  
归并排序: *UN*&DmF  
EqIs&){  
package org.rut.util.algorithm.support; -qpM 6t  
<veypLi"R  
import org.rut.util.algorithm.SortUtil; HTMo.hr  
EBQ_c@  
/** .N\t3\9}  
* @author treeroot 7X> @r"9<  
* @since 2006-2-2 X`eX+9  
* @version 1.0 gf4Hq&Rf  
*/ qvhG ^b0h  
public class MergeSort implements SortUtil.Sort{ Ep')@7^n  
$`t2SD  
/* (non-Javadoc) /6\uBy"Xt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?@Tsd@s~r  
*/ Yc3\  
public void sort(int[] data) { gQY`qz  
int[] temp=new int[data.length]; _ |HA\!  
mergeSort(data,temp,0,data.length-1); $`0,N_C<}  
} _25PyG  
=>A}eR1Y   
private void mergeSort(int[] data,int[] temp,int l,int r){ BZXee>3"  
int mid=(l+r)/2; Pmr'W\aIR  
if(l==r) return ; '9<8<d7?  
mergeSort(data,temp,l,mid); r4K%dx-t  
mergeSort(data,temp,mid+1,r); ATmyoN2@>  
for(int i=l;i<=r;i++){ ,5 3`t  
temp=data; j0 Os]a  
} ]lE5^<<  
int i1=l; aSHN*tP%y  
int i2=mid+1; uz=9L<$  
for(int cur=l;cur<=r;cur++){ HoWK# Nz\  
if(i1==mid+1) `G*fx=N  
data[cur]=temp[i2++]; I,& gKgh  
else if(i2>r) Jiru~Vo+  
data[cur]=temp[i1++]; b#t5Dve  
else if(temp[i1] data[cur]=temp[i1++]; XQ}7.u!  
else Fy.!amXu  
data[cur]=temp[i2++]; N"~P$B1 X  
} r(n>N0:0Ls  
} v6=X]Ji{YA  
"(';UFa  
} pB%oFWqK  
^HI2Vp  
改进后的归并排序: 20J-VN:  
X .K*</(g  
package org.rut.util.algorithm.support; :inVwc  
|^F$Ta  
import org.rut.util.algorithm.SortUtil; j*1MnP3/8Y  
^ ~Tn[w W_  
/** ;vpq0t`  
* @author treeroot W}(T5D" 3x  
* @since 2006-2-2 %)&Tr`   
* @version 1.0 65RD68a  
*/ g(Oor6Pp  
public class ImprovedMergeSort implements SortUtil.Sort { ;MlPP)*k  
; =*=P8&5  
private static final int THRESHOLD = 10; Uhyf  
cN\_1  
/* 7s}F`fjKP  
* (non-Javadoc) 1h)K3cC  
* Hbu :HFJ!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;oVOq$ql  
*/ n \&H~0X  
public void sort(int[] data) { /WX&UAG  
int[] temp=new int[data.length]; Ru);wzky  
mergeSort(data,temp,0,data.length-1); @bnw$U`+  
} &{q'$oF  
0B~x8f  
private void mergeSort(int[] data, int[] temp, int l, int r) { Sm|TDH  
int i, j, k; Upg8t'%{op  
int mid = (l + r) / 2; nmuU*o L  
if (l == r) AOTtAV_e  
return; y4&x`|tv  
if ((mid - l) >= THRESHOLD) m-cw5lW  
mergeSort(data, temp, l, mid); moMNd(p  
else a [f}-t9  
insertSort(data, l, mid - l + 1); `\=~ $&vjC  
if ((r - mid) > THRESHOLD) ~!%G2E!  
mergeSort(data, temp, mid + 1, r); %[o($a$  
else '#QZhz(+  
insertSort(data, mid + 1, r - mid); !y2yS/  
#TeAw<2U  
for (i = l; i <= mid; i++) { <v\x<ul6  
temp = data; rQPO+  
} t+0/$  
for (j = 1; j <= r - mid; j++) { '68#7Hs.  
temp[r - j + 1] = data[j + mid]; B.gEV*@  
} MY(51)*  
int a = temp[l]; ~BnmAv$m[  
int b = temp[r]; W3R43>$  
for (i = l, j = r, k = l; k <= r; k++) { nwDGzC~y<  
if (a < b) { dXU6TCjU7  
data[k] = temp[i++]; ?]TtUoY=)F  
a = temp; r -uu`=,  
} else { D<*) ^^  
data[k] = temp[j--]; b%VZPKA;  
b = temp[j]; ,}I m^~5  
} |n(b>.X  
} #!r>3W&  
} FIQHs"#T  
CXi:?6OG  
/** V[7D4r.j  
* @param data A\.{(,;kp  
* @param l ykGA.wo7/P  
* @param i :"Rx$;a  
*/ dw| VH1fS  
private void insertSort(int[] data, int start, int len) { aq(i^d  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); GAh\ 6ul  
} H8Z|gq1r  
} &nY#G HB  
} O}6*9Xy  
} JbXi|OS/  
F C=N}5u  
堆排序: 9*r l7  
e8z?) 4T  
package org.rut.util.algorithm.support; <DEu]-'>  
5R1? jlm  
import org.rut.util.algorithm.SortUtil; (Q.I DDlr  
}|znQ3A2\l  
/** l o- 42)  
* @author treeroot ;g<y{o"Q3p  
* @since 2006-2-2 OgCNq W d-  
* @version 1.0 bhfC2@  
*/ '\"5qB  
public class HeapSort implements SortUtil.Sort{ nKjT&R  
wiM4,  
/* (non-Javadoc) SJsbuLxR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jRW@$ <mG  
*/ P|;f>*^Y  
public void sort(int[] data) { J d,9<m $  
MaxHeap h=new MaxHeap(); shVEAT'`  
h.init(data); >#Bu [nD%  
for(int i=0;i h.remove(); Z07n>|WF-  
System.arraycopy(h.queue,1,data,0,data.length); LvL2[xh%&  
} 7<X!Xok  
lKS 2OOYC`  
private static class MaxHeap{ o9OCgP`Y  
NezE]'}  
void init(int[] data){ MK!Aq^Jz  
this.queue=new int[data.length+1]; L#!m|_Mz  
for(int i=0;i queue[++size]=data; }%0X7'  
fixUp(size); _gl1Qtv@rf  
} J!@R0U.  
} hF5(1s}e$  
LK>;\BRe?  
private int size=0; &Cr4<V6-q  
Z55C4F5v  
private int[] queue; :fnK`RnaQ  
6 8Vxy  
public int get() { iY5V4Gbo  
return queue[1]; !3z ;u8W  
} 1buO&q!vn  
YuoIhT  
public void remove() { nrbP3sf*  
SortUtil.swap(queue,1,size--); d$n<^ ~Z  
fixDown(1); Z!l]v.S  
} Nema>T]  
file://fixdown G"Hj$  
private void fixDown(int k) { :_o^oi7G  
int j; oZi{v]4  
while ((j = k << 1) <= size) { U/h@Q\~U  
if (j < size %26amp;%26amp; queue[j] j++; Z,8t!Y  
if (queue[k]>queue[j]) file://不用交换 *lQa^F  
break; CKC5S^Mx  
SortUtil.swap(queue,j,k); VWqZ`X  
k = j; wv Mp~  
} +HG*T[%/  
} P4 #j;k4P  
private void fixUp(int k) { KD- -w(4  
while (k > 1) { `A8ErfA  
int j = k >> 1; @H}Hjg_>m  
if (queue[j]>queue[k]) ?^`fPH=  
break; dKa2_|k'  
SortUtil.swap(queue,j,k); {~XnmBs  
k = j; ff00s+  
} & +yo PF  
} v'r)d-T   
;f)AM}~^Q  
} (,cG+3r ]  
C3(h j  
} :Vw{ l B  
o3h>)4  
SortUtil: Hk=HO|&<XB  
r4b-.>w  
package org.rut.util.algorithm; S7~HBgS<  
Mu6DT p~k  
import org.rut.util.algorithm.support.BubbleSort; -]QP#_   
import org.rut.util.algorithm.support.HeapSort; er3`ITp:dp  
import org.rut.util.algorithm.support.ImprovedMergeSort; <*o V-A  
import org.rut.util.algorithm.support.ImprovedQuickSort; 'c3'eJ0  
import org.rut.util.algorithm.support.InsertSort; B|'}HBkP  
import org.rut.util.algorithm.support.MergeSort; Tf('iZ2+  
import org.rut.util.algorithm.support.QuickSort; wNmC1HOh  
import org.rut.util.algorithm.support.SelectionSort; h,,B"vPS  
import org.rut.util.algorithm.support.ShellSort; 4b6)+*[O  
^@Z8 _PZo  
/** ^|2m&2  
* @author treeroot FwD q@Oj  
* @since 2006-2-2 ^$[iLX  
* @version 1.0 2HF`}H)H  
*/ 8i)9ho<  
public class SortUtil { !-ZY_  
public final static int INSERT = 1; 1X9J[5|ll  
public final static int BUBBLE = 2; |f(*R_R  
public final static int SELECTION = 3; "akAGa!V+  
public final static int SHELL = 4; dEW= V"W  
public final static int QUICK = 5; mmy/YP)  
public final static int IMPROVED_QUICK = 6; v7%}ey[  
public final static int MERGE = 7; J|<C;[du>  
public final static int IMPROVED_MERGE = 8; Np/vPaAk  
public final static int HEAP = 9; dXsD%sG @  
Oz)/KZ  
public static void sort(int[] data) { z";(0%  
sort(data, IMPROVED_QUICK); W{~ y< `D  
} ES8(:5  
private static String[] name={ \r [@A3O  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7OS i2  
}; : t /0  
aX Ie  
private static Sort[] impl=new Sort[]{ xC}'"``s  
new InsertSort(), @#;*e] 1a  
new BubbleSort(), \C4wWh-A  
new SelectionSort(), 8~ &=vc  
new ShellSort(), 6?[SlPPE1  
new QuickSort(), ,LDL%<7t  
new ImprovedQuickSort(), @Bn4ZF B@  
new MergeSort(), W>: MK-_ J  
new ImprovedMergeSort(), w^,Xa  
new HeapSort() =&(e*u_  
}; 5".bM8o  
@.`k2lxGd~  
public static String toString(int algorithm){ '(g;nU<  
return name[algorithm-1]; m_,Jbf  
} ]'$:Y   
0G2Y_A&e**  
public static void sort(int[] data, int algorithm) { -Kcjnl92i  
impl[algorithm-1].sort(data); 9}Ge@a<j  
} s)KlKh  
4t3>`x 7  
public static interface Sort { ]q4(%Q  
public void sort(int[] data); VE}r'MBk  
} 'f CSP|  
G5RdytK  
public static void swap(int[] data, int i, int j) { u]i%<Yy89  
int temp = data; {7;QZk(  
data = data[j]; ,t:P  
data[j] = temp; Ge7B%p8  
} W1Ye+vg/s  
} =E^/gc%X  
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