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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。 &F`L}#oL&  
插入排序: TzY *;  
&mdB\Y?^  
package org.rut.util.algorithm.support; D )gD<  
;W~4L+e  
import org.rut.util.algorithm.SortUtil; 7UDq/:}Fo  
/** QoseS/  
* @author treeroot xEC 2@J  
* @since 2006-2-2 ZRP y~wy>  
* @version 1.0 5us^B8Q  
*/ l=NAq_?N\  
public class InsertSort implements SortUtil.Sort{ N6q5`Ry  
@() {/cF  
/* (non-Javadoc) o?y"]RCM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ko+al{2  
*/ FR["e1<0  
public void sort(int[] data) { y+RRg[6|  
int temp; o$t &MST?i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /k) NP  
} @2?=3Wf  
} A]#_"fayo  
}  *6'_5~G  
[-QK$~[ g  
} y^ 3,X_0  
]DL> .<]d  
冒泡排序: giA~+m~fN  
5,G<}cd  
package org.rut.util.algorithm.support; =X%R*~!#Of  
O4'kS @  
import org.rut.util.algorithm.SortUtil; 8_sU8q*s  
<Bob#Tf ~  
/** oK(W)[u  
* @author treeroot ZQJw2LAgO  
* @since 2006-2-2 }hObtAS  
* @version 1.0 p0:&7,+a,  
*/ ;{F;e)${M  
public class BubbleSort implements SortUtil.Sort{ F(J!dG5#  
A{n*NxKCX!  
/* (non-Javadoc) \e5,`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3ec==.  
*/ {) '" k6w  
public void sort(int[] data) { `LHfAXKN  
int temp; pUEok+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ST [1'T+L  
if(data[j] SortUtil.swap(data,j,j-1); (R 2P< Zr  
} O=?X%m #  
} LkbvA  
} z{M,2  
} L" ^366M!  
Dp |FyP_w  
} N %/DN  
|VEAzY|[#  
选择排序: 3NZFW{u  
x#VUEu]8  
package org.rut.util.algorithm.support; u9~J1s<e  
O7*i;$!R  
import org.rut.util.algorithm.SortUtil; AS7!FD6b  
 51j  
/** 2B4c :jJ  
* @author treeroot ?vVkZsU  
* @since 2006-2-2 !o@-kl  
* @version 1.0 ^6*? a9jO>  
*/ 4M _83WL  
public class SelectionSort implements SortUtil.Sort { R/#*~tPi8  
w Bl=]BW!%  
/* h*d,AJz &.  
* (non-Javadoc)  &]euN~y  
* .Ybm27Dk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !O5UE  
*/ S2*:]pYf}  
public void sort(int[] data) { FMR0?\jnT  
int temp; 8x+K4B"oe  
for (int i = 0; i < data.length; i++) { Z3S\@_/;  
int lowIndex = i; +wQ GC  
for (int j = data.length - 1; j > i; j--) { <q_H 3|  
if (data[j] < data[lowIndex]) { )`g[k" yB3  
lowIndex = j; ysL8w"t  
} {a>)VZw_#  
} u<+;]8[o  
SortUtil.swap(data,i,lowIndex); #'"h+[XY  
} 0V1kZ.  
} DfqXw^BKD  
8vnU!r  
} V GM/ed5-  
hydn" 9;  
Shell排序: I7]45pF  
~>)cY{wE_  
package org.rut.util.algorithm.support; "BEU%,w  
GAPZt4Z2  
import org.rut.util.algorithm.SortUtil; o1YhYA  
|RHX2sso  
/** j^:\a\-1  
* @author treeroot >iaZGXje  
* @since 2006-2-2 H| IsjCc  
* @version 1.0 3Qn! `  
*/ yBq4~b~[  
public class ShellSort implements SortUtil.Sort{ t+p-,ey^@  
vPpbm  
/* (non-Javadoc) 3^ wJ4=^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o"TEmZUP  
*/ x4Eq5"F7}  
public void sort(int[] data) { 5+giT5K*h  
for(int i=data.length/2;i>2;i/=2){ Ghs{B8  
for(int j=0;j insertSort(data,j,i); f"\G"2C  
} 66NJ&ac  
} *e&OpVn  
insertSort(data,0,1); l}:&}  
} I kv@}^p 7  
]vo&NE  
/** .bE+dA6:v  
* @param data /GCI`hx>"  
* @param j vq-Tq>  
* @param i >k)}R|tJ  
*/ aKkL0 D  
private void insertSort(int[] data, int start, int inc) { Q(=} PF  
int temp; 3)b[C&`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :Q@=;P2  
} ()cqax4  
} cM|!jnKm  
} 8k.<xWDU  
/O*4/  
} s+omCr|H;A  
.5s#JL  
快速排序: 4lCEzWo[/  
z\F#td{r  
package org.rut.util.algorithm.support; YU]|N 'mL2  
p#QR^|7"  
import org.rut.util.algorithm.SortUtil; y$Rh$e K  
<0h,{28  
/** ~c\iBk  
* @author treeroot ZR[6-  
* @since 2006-2-2 c|2+J :}p  
* @version 1.0 4))5l9kc.  
*/ N'@E^ rYc  
public class QuickSort implements SortUtil.Sort{ %p}xW V.  
 Wkc^?0p  
/* (non-Javadoc) c0W4<(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vV+>JM6<K  
*/ NP5;&}uv*!  
public void sort(int[] data) { D1rXTI$$  
quickSort(data,0,data.length-1); {}kE=L5  
} kU{+@MA;  
private void quickSort(int[] data,int i,int j){ /'k4NXnW3  
int pivotIndex=(i+j)/2; b;G3&R]  
file://swap (KtuikJ32^  
SortUtil.swap(data,pivotIndex,j); 5Iinen3>  
: 8dQ8p;  
int k=partition(data,i-1,j,data[j]); Q#w mS&$f  
SortUtil.swap(data,k,j); ySAkj-< /P  
if((k-i)>1) quickSort(data,i,k-1); }%Mj`Bh  
if((j-k)>1) quickSort(data,k+1,j); tIn dve  
 kDbDG,O  
} ]^j:}#R  
/** 5x856RQ'  
* @param data g@0<`g  
* @param i ~Cc%!4f'  
* @param j HYU-F_|N=  
* @return ^/@Z4(E  
*/ `o/G0~T)  
private int partition(int[] data, int l, int r,int pivot) { _=0%3Sh  
do{ .)=T1^[hI  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :{sy2g/+  
SortUtil.swap(data,l,r); #J=^CE  
} ,w-=8>5lrj  
while(l SortUtil.swap(data,l,r); :kU#5Aj gK  
return l; 8xf]zM"Q  
} ^97u0K3$  
|Y|6`9;  
} N;Hoi8W  
wavyREK   
改进后的快速排序: c{.y9P6  
?{=& Ro  
package org.rut.util.algorithm.support; RJ}%pA4I  
hA=.${uIO  
import org.rut.util.algorithm.SortUtil; ;OC~,?O5  
Pgug!![  
/** !s^[|2D_U  
* @author treeroot iA.:{^_)09  
* @since 2006-2-2 7Eb | AR  
* @version 1.0 j(aok5:e  
*/ T-MC|>pv  
public class ImprovedQuickSort implements SortUtil.Sort { J|$UAOEDa  
813t=A  
private static int MAX_STACK_SIZE=4096; vw~=z6Ka  
private static int THRESHOLD=10; Q*jNJ^IW  
/* (non-Javadoc) eewlK]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) itYTV?bd  
*/ D9yAq'k$  
public void sort(int[] data) { x)+ q$FB  
int[] stack=new int[MAX_STACK_SIZE]; s2=`haYu  
m>FP&~2  
int top=-1; =Ju%3ptH0  
int pivot; _a]0<Vm C0  
int pivotIndex,l,r; 7&`Yl[G  
\d)HwO  
stack[++top]=0; ntr&? H  
stack[++top]=data.length-1; `8 Ann~Z|k  
m'n<.1;1{j  
while(top>0){ BbIg]E/G  
int j=stack[top--]; )U|0vr8:  
int i=stack[top--]; sq rY<@%  
E"<-To  
pivotIndex=(i+j)/2; f]4j7K!e]  
pivot=data[pivotIndex]; Au10]b  
H|%'$oWp  
SortUtil.swap(data,pivotIndex,j); b[U;P=;=  
oUd R,;h9  
file://partition \x=j  
l=i-1; 7lUnqX.  
r=j; )NLjv=ql  
do{ L3;cAb/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); o}b_`O  
SortUtil.swap(data,l,r); `E2RW{$A  
} .Lm0$o*`  
while(l SortUtil.swap(data,l,r); 45 B |U  
SortUtil.swap(data,l,j); /Ue_1Efa  
\o}=ob  
if((l-i)>THRESHOLD){ $tqr+1P  
stack[++top]=i; { Ba_.]x  
stack[++top]=l-1; bLsN?_jy  
} gP2<L5&Z,  
if((j-l)>THRESHOLD){ i%GNm D  
stack[++top]=l+1; LjySO2  
stack[++top]=j; 06]%$ -j  
} T+j-MR}{\  
(DQ ]58&  
} !NO)|N>  
file://new InsertSort().sort(data); K3^2;j1F Q  
insertSort(data); x/L(0z  
} z P8rW5/  
/** W`F?j-4  
* @param data c[+uwO~  
*/ a}g <<{  
private void insertSort(int[] data) { :Aa5,{v _  
int temp; R4%}IT^%P  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 63SmQsv  
} lho0Xy gn  
} ~o27~R ]  
} @MxB d,P  
J+ uz{  
} -}9>#<v  
vu`,:/|h  
归并排序: O9R[F  
^'Qe.DW[  
package org.rut.util.algorithm.support; *#7]PA Qw  
Q3 yW#eD  
import org.rut.util.algorithm.SortUtil; {!NX u  
xH>2$  ;f  
/** y\zRv(T=  
* @author treeroot #SqU>R  
* @since 2006-2-2 YOQ>A*@4  
* @version 1.0 !uSG 1j" y  
*/ A_2oQ*  
public class MergeSort implements SortUtil.Sort{ ,O`~ D~$  
rvp#[RAaS}  
/* (non-Javadoc) s|IC;C|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k.!m-5E  
*/ Yqb3g(0   
public void sort(int[] data) { Zx 5Ue#I  
int[] temp=new int[data.length]; A8T8+M:  
mergeSort(data,temp,0,data.length-1); ,racmxnv  
} 0[.T`tpN'  
7~!F3WT{  
private void mergeSort(int[] data,int[] temp,int l,int r){ q#\4/Dt  
int mid=(l+r)/2; .> 5[;  
if(l==r) return ; qu%}b>  
mergeSort(data,temp,l,mid); x&*2R#Ai  
mergeSort(data,temp,mid+1,r); KZGy&u >`  
for(int i=l;i<=r;i++){ 1C+d&U  
temp=data; JVR,Py:%G  
} 9wdl1QS  
int i1=l; /@Ec[4^=!.  
int i2=mid+1; $[V-M\q  
for(int cur=l;cur<=r;cur++){ Zmz $ hr  
if(i1==mid+1) *;[g Ga~  
data[cur]=temp[i2++]; v,d'SR.  
else if(i2>r)  6h?)x  
data[cur]=temp[i1++]; 98XlcI#  
else if(temp[i1] data[cur]=temp[i1++]; 7mA:~-.u  
else odKdpa Zc[  
data[cur]=temp[i2++]; =[LUOOR*]  
} c\OLf_Uf  
} w5;d/r<q  
>E9 k5  
} 2?@Ozr2Uh  
3|PV.  
改进后的归并排序: sFw;P`  
tHV+#3h  
package org.rut.util.algorithm.support; ,c|Ai(U  
7)*q@  
import org.rut.util.algorithm.SortUtil; *g"X hk  
ny1Dg$u i2  
/** ^ /)%s3  
* @author treeroot 6iS7Hao"  
* @since 2006-2-2 lBLL45%BIN  
* @version 1.0 #N'bhs  
*/ O? 0`QMY  
public class ImprovedMergeSort implements SortUtil.Sort { H %ScrJ#V  
^G "Qp8 "  
private static final int THRESHOLD = 10; CKX3t:HP0  
*r ('A  
/* 5kCXy$"%  
* (non-Javadoc) **c"}S6:mC  
* gp+@+i>b+[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ? U =Mdw  
*/ \uZ1Sl  
public void sort(int[] data) { o ^ 08<  
int[] temp=new int[data.length]; MjK<n[.  
mergeSort(data,temp,0,data.length-1); `rV -,-r@  
} k7]4TIUD*  
kV4L4yE  
private void mergeSort(int[] data, int[] temp, int l, int r) { h-U]?De5\  
int i, j, k; fP 3t0cp  
int mid = (l + r) / 2; #"C!-kS'=  
if (l == r) +o35${  
return; gUYTVp Vf  
if ((mid - l) >= THRESHOLD) 0a1Mu>P,  
mergeSort(data, temp, l, mid); 6XnUs1O  
else 4}Lui9  
insertSort(data, l, mid - l + 1); aO 2zD<d  
if ((r - mid) > THRESHOLD) T "#DhEM  
mergeSort(data, temp, mid + 1, r); =F_j})O5  
else 1B$8<NCQ=?  
insertSort(data, mid + 1, r - mid); 8"rK  
~*`wRiUhis  
for (i = l; i <= mid; i++) { ($ gmN 4  
temp = data; g[;&_gL  
} yM7FR);  
for (j = 1; j <= r - mid; j++) { m8INgzVTC  
temp[r - j + 1] = data[j + mid]; ZgmK~iJ  
} C~PP}|<~V  
int a = temp[l]; ,V''?@  
int b = temp[r]; w^:@g~  
for (i = l, j = r, k = l; k <= r; k++) { F4:5 >*:  
if (a < b) { lB7/oa1]>  
data[k] = temp[i++]; +e#(p<  
a = temp; 2}_^~8  
} else { W #kLM\2L  
data[k] = temp[j--]; T n,Ifo3  
b = temp[j]; 2 xi@5;!  
} /FcwsD\=$  
} !V/p.O  
} b+BX >$  
, - _ReL  
/** lPz5.(5'  
* @param data |8\et  
* @param l XsMETl"Av4  
* @param i S7CD#Y[s  
*/ X<H+Z2d  
private void insertSort(int[] data, int start, int len) { w Qp{z  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >*}m .'u  
} a0  w  
} >k u7{1)  
} {1GIiP-U  
} 2f 9%HX(5  
C}]rx{xC  
堆排序: G""=`@  
dr4m}v.  
package org.rut.util.algorithm.support; y(Q.uYz*  
cp+eh  
import org.rut.util.algorithm.SortUtil; iLFhm4.PO  
*Rj*%S  
/** |CjdmQ u  
* @author treeroot !|#1z}(  
* @since 2006-2-2 1;+(HB  
* @version 1.0 v=+>ids  
*/ ]&L[]  
public class HeapSort implements SortUtil.Sort{ , p r ",=  
$h'>Zvf  
/* (non-Javadoc) B4# gT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \"A~ks~  
*/ H3o Um1  
public void sort(int[] data) { %MN>b[z  
MaxHeap h=new MaxHeap(); t`A5wqm  
h.init(data); vlZ?qIDe  
for(int i=0;i h.remove(); [2ZZPY9?Q  
System.arraycopy(h.queue,1,data,0,data.length); TM$`J  
} ` _]tN  
m2Q#ATLW  
private static class MaxHeap{ L+" 5g@  
ZD]5"oHY  
void init(int[] data){ Z9 tjo1X  
this.queue=new int[data.length+1]; 2<5s0GT'/  
for(int i=0;i queue[++size]=data; ^'aMp}3iu  
fixUp(size); 1rhQ{6  
} <lVW; l7  
} c- ^\YSDMN  
g\ p;  
private int size=0;  fj])  
FA;uu\  
private int[] queue; > 9wEx[  
P(za8l>  
public int get() { ~4+=C\r  
return queue[1]; AW:WDNQh8n  
} `;!v<@:i2  
`ynD-_fTN  
public void remove() { G@igxnm}  
SortUtil.swap(queue,1,size--); u4[3JI>  
fixDown(1); N!F ;!  
} YWPAc>uw,  
file://fixdown 9:tKRN_D  
private void fixDown(int k) { 3YF*TxKx  
int j; <ib# PLRM  
while ((j = k << 1) <= size) { Yj^n4G(h  
if (j < size %26amp;%26amp; queue[j] j++; /Hl]$sJY  
if (queue[k]>queue[j]) file://不用交换 nAJ<@a  
break; &Rx-zp&dJ  
SortUtil.swap(queue,j,k); SD^6ib/]b  
k = j; T6ajWUw  
} D=nuK25  
} %Ot^G%34  
private void fixUp(int k) { DKfw8"L]  
while (k > 1) { 7.PG*q  
int j = k >> 1; :n&n"`D~  
if (queue[j]>queue[k]) tc'` 4O]c8  
break; 8j} CP  
SortUtil.swap(queue,j,k); cO"7wgg  
k = j; r9@Q="J_)  
} X,<n|zp  
}  %Ln7{w  
*@r)3  
} .)>DFGb>H  
h@"dpmpe  
} H`$s63  
6XO%l0dC.  
SortUtil: gekW&tRie  
Cu0N/hBT  
package org.rut.util.algorithm; bgqN&J)Jr)  
0K`3BuBs  
import org.rut.util.algorithm.support.BubbleSort; 3/>McZ@OH  
import org.rut.util.algorithm.support.HeapSort; Axhe9!Fm  
import org.rut.util.algorithm.support.ImprovedMergeSort; $[}31=0  
import org.rut.util.algorithm.support.ImprovedQuickSort; c~b[_J)  
import org.rut.util.algorithm.support.InsertSort; K& <|94_k  
import org.rut.util.algorithm.support.MergeSort; #IA[erf:  
import org.rut.util.algorithm.support.QuickSort; {f3)!Pei`J  
import org.rut.util.algorithm.support.SelectionSort; 5Jd&3pO  
import org.rut.util.algorithm.support.ShellSort; cPi 3UjY~  
!`hjvJryw  
/** R8F[ 7&(  
* @author treeroot *TVr| to  
* @since 2006-2-2 mm'n#%\G  
* @version 1.0 `MlQPLH  
*/ 2)h i(  
public class SortUtil { "'p:M,:  
public final static int INSERT = 1; !>Db  
public final static int BUBBLE = 2; t8\F7F P  
public final static int SELECTION = 3; 2PE|4zG  
public final static int SHELL = 4; mEv<r6qDT  
public final static int QUICK = 5; vXLiYWo  
public final static int IMPROVED_QUICK = 6; ?P ,z^  
public final static int MERGE = 7; f%` =>l  
public final static int IMPROVED_MERGE = 8; wAkpk&R  
public final static int HEAP = 9; }|%dN*',  
Oj\lg2Ck  
public static void sort(int[] data) { @X?DHLM  
sort(data, IMPROVED_QUICK); m"<0sqD;  
} WW\u}z.QJ  
private static String[] name={ lPSyFb"  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3ox%1x NA  
}; MzL^u8  
K>l$Y#x}k  
private static Sort[] impl=new Sort[]{ t,M _  
new InsertSort(), @AaM]?=P{  
new BubbleSort(), ' 7+x,TszI  
new SelectionSort(), )UbPG`x8  
new ShellSort(), FlGU1%]m  
new QuickSort(), G%^jgr)  
new ImprovedQuickSort(), IR;l{q&`  
new MergeSort(), SW5V:|/  
new ImprovedMergeSort(), (rqc_ZU5  
new HeapSort() 'L?e)u.  
}; r5 tn'  
;\j7jz^uC  
public static String toString(int algorithm){ B-^r0/y;  
return name[algorithm-1]; '&hz *yk  
} \4Uhc3  
?M!Mb-C[  
public static void sort(int[] data, int algorithm) { A,67)li3  
impl[algorithm-1].sort(data); ~_Q~AOFM  
} 4> k"$l/:  
V=^B7a.;>  
public static interface Sort { 4`yE'%6.}  
public void sort(int[] data); ;)~}/nR<a  
} JLd-{}A""-  
fi%)520  
public static void swap(int[] data, int i, int j) { GuK3EM*_  
int temp = data; "&Hr)yyWG  
data = data[j]; SR%k|YT  
data[j] = temp; y0vJ@ %`  
} #[ f]-c(!  
} {zX]4 1T  
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