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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。 ^HC! my  
插入排序: #M{}Grg  
4S03W  
package org.rut.util.algorithm.support; 1N:eM/a  
O6boTB_2  
import org.rut.util.algorithm.SortUtil; 6OIA>%{  
/** 7jEAhi!Cq(  
* @author treeroot gKS^-X{x  
* @since 2006-2-2 tTQ>pg1{qh  
* @version 1.0 PjRKYa_U  
*/ /mqEc9sq,  
public class InsertSort implements SortUtil.Sort{ SU H^]4>  
uOm fpgO  
/* (non-Javadoc) r1F5&?{q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J+Y&a&j.  
*/ rQ~%SUM7  
public void sort(int[] data) { 63F0Za}h  
int temp; SM0=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uQpV1o5iA  
} bjD0y cB[  
} Xo]FOJ 5  
} d{9jd{ _#G  
7J0 PO}N  
} s g6  
S{ fNeK  
冒泡排序: C7)].vUN  
l^"gpO${K  
package org.rut.util.algorithm.support; Kd^ ._  
GAz;4pUZ  
import org.rut.util.algorithm.SortUtil; ( 8H "'  
|urohua  
/** |@V<}2zCZ  
* @author treeroot c$ 1ez  
* @since 2006-2-2 &8~U&g6C  
* @version 1.0 *:GoS?Ma  
*/ MIi:\m5  
public class BubbleSort implements SortUtil.Sort{  q#MA A_  
}ZR3  
/* (non-Javadoc) ~#(bX]+A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mufF_e)  
*/ Z\LW<**b  
public void sort(int[] data) { #gi&pR'$  
int temp; W;Fcp  
for(int i=0;i for(int j=data.length-1;j>i;j--){ =]etw  
if(data[j] SortUtil.swap(data,j,j-1); 'nW:2(J  
} R},mq&f5  
} ?vM{9!M  
} Hyc19|  
} W)j/[  
1gCp/m2r7  
} ' 71D:%p  
9> [ $;>  
选择排序: #J1a `}x  
s}/YcUK  
package org.rut.util.algorithm.support; IvH0sS`F  
MPNBA1s  
import org.rut.util.algorithm.SortUtil; bha_bj  
iOzw)<  
/** % sT=>\  
* @author treeroot ^Z2%b>  
* @since 2006-2-2 udW, P  
* @version 1.0 =p^*y-z  
*/ [.|tD  
public class SelectionSort implements SortUtil.Sort { a-8~f8na{(  
]Alu~Dw  
/* U4^dDj  
* (non-Javadoc) 7F.>M  
* #WfJz}P,!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $+V{2k4X,  
*/ MqXA8D  
public void sort(int[] data) {  rd. "mG.  
int temp; Q:@Y/4=  
for (int i = 0; i < data.length; i++) { va#~ \%`  
int lowIndex = i; DF9Br D0{  
for (int j = data.length - 1; j > i; j--) { p2w/jJMD  
if (data[j] < data[lowIndex]) { GawLQst[+  
lowIndex = j; ZLo3 0*  
} sveFxI  
} tA'i-D&  
SortUtil.swap(data,i,lowIndex); <>2QDI6_  
} )3z.{.F  
} 31J7# S2  
IKAF%0[R|j  
} jS| (g##4  
W 6~<7  
Shell排序: qH"0?<$9  
N tg#-_]  
package org.rut.util.algorithm.support; 24|:VxO  
kD"dZQx  
import org.rut.util.algorithm.SortUtil; :i?Z1x1`  
U3A>#EV  
/** sHh2>f@x$  
* @author treeroot gy~M]u{  
* @since 2006-2-2 :n>:*e@w%  
* @version 1.0 ZhM-F0;`  
*/ y\)bxmC  
public class ShellSort implements SortUtil.Sort{ 9l OUE  
'Y>!xm   
/* (non-Javadoc) Tcr&{S&o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j+Wgjf  
*/ %xWmzdn  
public void sort(int[] data) { .{)b^gE  
for(int i=data.length/2;i>2;i/=2){ Z&J417buk  
for(int j=0;j insertSort(data,j,i); ~5]AXi'e~  
} ZL~}B.nqS  
} `M"b L|[R  
insertSort(data,0,1); "eGS~-DVK  
} p7 2+:I  
WV?iYX!  
/** c( gUH  
* @param data ;41s&~eR  
* @param j mQ' ]0DS  
* @param i  Zp]Bs  
*/ t_P1a0Zu  
private void insertSort(int[] data, int start, int inc) { 28Q`O$=v  
int temp; !A!zG)Ue<  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uA\A4  
} O(WFjmHx  
} _BcB@a  
} Re,0RM\  
^!Bpev  
} nE::9Yh8z  
(}] 74Lc  
快速排序: zCPjuS/~ Q  
1NJ*EzJ~?  
package org.rut.util.algorithm.support; ~x>IN1Vci  
 0fNWI  
import org.rut.util.algorithm.SortUtil; KLA nW#  
8v(Xr}q,r  
/** (;Lz `r'  
* @author treeroot =fG(K!AQ  
* @since 2006-2-2 :UFf6T?  
* @version 1.0 ;|9VPv/  
*/ o)1wF X  
public class QuickSort implements SortUtil.Sort{ lywcT! <  
9n9/[?S  
/* (non-Javadoc) QF-.")Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {jlm]<:&Z  
*/ ?;uzx7@F  
public void sort(int[] data) { >o'D/'>ku  
quickSort(data,0,data.length-1); @0B<b7Jv  
} F~RUb&*/<  
private void quickSort(int[] data,int i,int j){ ~V5k  
int pivotIndex=(i+j)/2; ho^1T3  
file://swap .%~ L  
SortUtil.swap(data,pivotIndex,j); a ,W5T8  
"@`M>)*o  
int k=partition(data,i-1,j,data[j]); 0ZPPt(7  
SortUtil.swap(data,k,j); NP%ll e,l  
if((k-i)>1) quickSort(data,i,k-1); I+u=H2][2  
if((j-k)>1) quickSort(data,k+1,j); G++kU o<  
B}r@xz  
} EEaKT`/d  
/** /R@(yT=t  
* @param data tDIzn`$ z  
* @param i B-M|}T  
* @param j jY ^ndr0;  
* @return | b@?]M  
*/ |Zkcs]8M!  
private int partition(int[] data, int l, int r,int pivot) { S7N54X2JwL  
do{ @,zBZNX y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )t)tk=R9N  
SortUtil.swap(data,l,r); dqd Qt_  
} /<|J\G21  
while(l SortUtil.swap(data,l,r); G)b]uX  
return l; kC LeHH|K  
} j|+B|   
?&/9b)cS  
} aY3kww`  
G-,PsXSwe  
改进后的快速排序: :5@7z9 >  
w8> T ~Mv  
package org.rut.util.algorithm.support; `{tykYwCLc  
[C7:Yg7  
import org.rut.util.algorithm.SortUtil; @X4;fd  
\6C"bQ  
/** :Z1_;`>CT  
* @author treeroot yd>kJk^~/  
* @since 2006-2-2 rZ0@GA  
* @version 1.0 XUMCz7&j  
*/ )%#hpP M^  
public class ImprovedQuickSort implements SortUtil.Sort { a#G7pZX/I}  
5{cAawU.  
private static int MAX_STACK_SIZE=4096; qZ8lU   
private static int THRESHOLD=10; cH2 nG:H  
/* (non-Javadoc) TR ]lP<m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {9C(\i +  
*/ Az0Yt31=  
public void sort(int[] data) { C5XCy%h  
int[] stack=new int[MAX_STACK_SIZE]; M~ *E!  
hoU&'P8  
int top=-1; 94K ;=5h  
int pivot; (y(V,kXwa8  
int pivotIndex,l,r; #Oe=G:+A  
oZOFZ-<  
stack[++top]=0; s'/.ea V_  
stack[++top]=data.length-1; S:^Q(w7  
]YOQIzkL4}  
while(top>0){ BB>7%~3f  
int j=stack[top--]; #yU4X\oO  
int i=stack[top--]; _VY]  
%/S BJ  
pivotIndex=(i+j)/2; Zz/w>kAG*{  
pivot=data[pivotIndex]; N<:Ra~Ay  
I94;1(Cs%  
SortUtil.swap(data,pivotIndex,j); F}.Af=<Q  
` qt4~rD  
file://partition y/kCzDT,  
l=i-1; kMwt&6wS  
r=j; ZE}m\|$  
do{ nNQ\rO  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); gb@!Co3  
SortUtil.swap(data,l,r); <u^41  
} Bv9;q3]z-  
while(l SortUtil.swap(data,l,r); -B`;Sx  
SortUtil.swap(data,l,j); bF B;N+>  
xn6E f"  
if((l-i)>THRESHOLD){ hXM C!~Th  
stack[++top]=i; Ea P#~x  
stack[++top]=l-1; R` X$@iM  
} .cu5h   
if((j-l)>THRESHOLD){ 9N'$Y*. d<  
stack[++top]=l+1; WpmypkJA#  
stack[++top]=j; "rAm6b-`  
} 6] <?+#uQ  
J'B;  
} >6<g5ps.n  
file://new InsertSort().sort(data); J^t=.-a|  
insertSort(data); U*6-Y%7  
} e=2;z  
/** L^ +0K}eD  
* @param data 75^-93  
*/ gHox{*hb[  
private void insertSort(int[] data) { mZq*o<kTA  
int temp; =8tdu B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !gT6S o  
} !;R{-  
} OgOu$.  
} ~t#'X8.)  
[r]USCq  
} lgnF\)  
;M'R/JlUN  
归并排序: rylllJz|L:  
Gg-<3z  
package org.rut.util.algorithm.support; ,t)mCgbcO  
Z?v9ub~%  
import org.rut.util.algorithm.SortUtil; SM^6+L"BE  
y()#FRp7  
/** .Hgiru&  
* @author treeroot kxf'_Nzy  
* @since 2006-2-2 A:p0p^*  
* @version 1.0 VQ}=7oe%q  
*/ ,'ndQ{\9  
public class MergeSort implements SortUtil.Sort{ XeZv%` ?  
PE4{;|a }  
/* (non-Javadoc) [{Y$]3?}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @${!C\([1  
*/ @j^qT-0M  
public void sort(int[] data) { 1TbKnmTx  
int[] temp=new int[data.length]; | C2k(  
mergeSort(data,temp,0,data.length-1); xt3IR0  
} BJ&>'rc  
wI`uAZ="  
private void mergeSort(int[] data,int[] temp,int l,int r){ { ! FrI@  
int mid=(l+r)/2; qv,|7yw{  
if(l==r) return ; g`1*p|  
mergeSort(data,temp,l,mid); `NGCUGQ_7  
mergeSort(data,temp,mid+1,r); 4!monaB"e  
for(int i=l;i<=r;i++){ .#+rH}=Z  
temp=data; ?=PQQx2_*u  
} YemOP9  
int i1=l; 0~FX!1;  
int i2=mid+1; rj:$'m7  
for(int cur=l;cur<=r;cur++){ ;>CmVC'/  
if(i1==mid+1) z:fd'NC  
data[cur]=temp[i2++]; <:%Iq13D  
else if(i2>r) YJ:CqTy  
data[cur]=temp[i1++]; @V<tg"(c  
else if(temp[i1] data[cur]=temp[i1++]; NghQ#c  
else 2+Fq'!  
data[cur]=temp[i2++]; 8, WQ}cC  
} }Y-f+qX*  
} wuh$=fya  
WOg_Pn9HI  
} 6X'RCJu%  
^ 0TJys%  
改进后的归并排序: 40:YJ_n  
Q)Ppx7)  
package org.rut.util.algorithm.support; NIYAcLa@n8  
^K;,,s;0  
import org.rut.util.algorithm.SortUtil; 9MGA#a  
73]%^kx=  
/** %n-LDn  
* @author treeroot yyiZV\ /  
* @since 2006-2-2 zlXkD~GV  
* @version 1.0 3z5,4ps  
*/ /,B"H@ J  
public class ImprovedMergeSort implements SortUtil.Sort { X @\! \  
np)-Yzr  
private static final int THRESHOLD = 10; a Y{E'K=  
!E$S&zVMQ  
/* 55yP.@i9J  
* (non-Javadoc) ^@tn+'.  
* 5g/WQo\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D6v0n6w  
*/ ); $~/H4  
public void sort(int[] data) { *emUQ/uvf  
int[] temp=new int[data.length]; P~]BB.tog  
mergeSort(data,temp,0,data.length-1); !'PPj_Hp]  
} %3kqBH!d  
.[CXW2k  
private void mergeSort(int[] data, int[] temp, int l, int r) { O?{pln  
int i, j, k; S&]JY  
int mid = (l + r) / 2; QtX ->6P>  
if (l == r) .11iulQ  
return; m_St"`6 .  
if ((mid - l) >= THRESHOLD) < 27e7H*6  
mergeSort(data, temp, l, mid); 7dW9i7Aj  
else (s"_NUj6  
insertSort(data, l, mid - l + 1); E8?Q>%_  
if ((r - mid) > THRESHOLD) 0gt/JI($  
mergeSort(data, temp, mid + 1, r); H:0-.a^ZS  
else 8LiRZ"  
insertSort(data, mid + 1, r - mid); 43 |zjE  
Oj<2_u  
for (i = l; i <= mid; i++) { Ujw ^j  
temp = data; \DfvNeF  
} Gz6FwU8L  
for (j = 1; j <= r - mid; j++) { ){gOb  
temp[r - j + 1] = data[j + mid]; (hmasy6hM  
}  {kmaMP  
int a = temp[l]; )"f>cYF  
int b = temp[r]; Q&n|tQ*4  
for (i = l, j = r, k = l; k <= r; k++) { iv56zsR  
if (a < b) { KiCZEA  
data[k] = temp[i++]; 2-{8+*_'  
a = temp; JU"!qXQr  
} else { bC)<AG@Z\  
data[k] = temp[j--]; C#vh2'  
b = temp[j]; FUHa"$Bg  
} jMd's|#OP  
} v&uIxFCR  
} JRl8S   
ayC*n'  
/** v[HxO?x^  
* @param data .8wR;^  
* @param l *rW]HNz  
* @param i ko  ~iDT  
*/ } |sP;Rpu  
private void insertSort(int[] data, int start, int len) { *D`,z3/*  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~L4"t_-  
} qQVqS7 t  
} AbfLV942  
} }3N8EmS  
} NB16O !r  
q9!5J2P  
堆排序: |F6C&GNYT  
OPKm^}  
package org.rut.util.algorithm.support; )zr/9aV  
UpB7hA  
import org.rut.util.algorithm.SortUtil; }g(aZ  
t6 js@Ih  
/** :*Ckq~[Hg  
* @author treeroot M@csB.'  
* @since 2006-2-2 4W^0K|fq  
* @version 1.0 +IJpqFH  
*/ /&ph-4\i  
public class HeapSort implements SortUtil.Sort{ A$|> Jt  
Npq=jlj  
/* (non-Javadoc) U:8^>_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s31^9a  
*/ \'1%"JWK   
public void sort(int[] data) { pz-`Tp w  
MaxHeap h=new MaxHeap(); V ;>{-p  
h.init(data); LscAsq<H<  
for(int i=0;i h.remove(); f'r/Q2{n  
System.arraycopy(h.queue,1,data,0,data.length); {feS-.Khv  
} - FE)  
x6F\|nb  
private static class MaxHeap{ ZwG+rTW  
|a'Q^aT  
void init(int[] data){ J'2R-CI,  
this.queue=new int[data.length+1]; ZZlR:D  
for(int i=0;i queue[++size]=data; [i&z_e)  
fixUp(size); 9E (>mN  
} AV%Q5Mi}  
} !nykq}kPN\  
Gt-  -7S  
private int size=0; 4 (Y5n?/  
]kKf4SJZFU  
private int[] queue; }H^#}  
d(fgv  
public int get() { TcRnjsY$  
return queue[1]; {4:En;  
} #=$4U!yL  
a^sR?.+3  
public void remove() { F3wRHq  
SortUtil.swap(queue,1,size--); 4e*0kItC  
fixDown(1); %zX'u.}8#  
} )rj.WK.  
file://fixdown f1\x>W4z~\  
private void fixDown(int k) { SxQ|1:i%  
int j; R[#5E|` `9  
while ((j = k << 1) <= size) { \ iP[iE=  
if (j < size %26amp;%26amp; queue[j] j++; So!1l7b  
if (queue[k]>queue[j]) file://不用交换 iY( hGlV  
break; G+5G,|}  
SortUtil.swap(queue,j,k); P.[>x  
k = j; {uckYx-A  
} MTqbQ69v  
} %DRDe  
private void fixUp(int k) { Ppx*  
while (k > 1) { 5[*MT%ms  
int j = k >> 1; w.0.||C O  
if (queue[j]>queue[k]) l~f +h?cF  
break; ~\i uV  
SortUtil.swap(queue,j,k); SSI&WZ2a  
k = j; fM2[wh@  
} O;,k~  
} _I'O4s1S  
ClfpA?vv  
} ?xeq*<qfI  
a(}jn|  
} 8q0f#/`v  
I>P</TE7  
SortUtil: &[3!Lk`.0  
EA8(_}  
package org.rut.util.algorithm; %:oGyV7a  
BkO"{  
import org.rut.util.algorithm.support.BubbleSort; j^64:3  
import org.rut.util.algorithm.support.HeapSort; t+?\4+!<  
import org.rut.util.algorithm.support.ImprovedMergeSort; o-x_[I|@  
import org.rut.util.algorithm.support.ImprovedQuickSort; [;X YT  
import org.rut.util.algorithm.support.InsertSort; ~I'Z=Wo  
import org.rut.util.algorithm.support.MergeSort; *X<De  
import org.rut.util.algorithm.support.QuickSort; jCa{WV:K}  
import org.rut.util.algorithm.support.SelectionSort; }hBv?B2/1  
import org.rut.util.algorithm.support.ShellSort; gi"v$ {R  
xr6Q5/p1  
/** |-e=P9,  
* @author treeroot iP_rEi*-J  
* @since 2006-2-2 M)b`~|Wt  
* @version 1.0 ? th+~dE  
*/ -'8|D!>v2  
public class SortUtil { ? 8~$du$  
public final static int INSERT = 1; Um9=<*p  
public final static int BUBBLE = 2; Gn_v}31d%  
public final static int SELECTION = 3; -''vxt?7H&  
public final static int SHELL = 4; {8"W  
public final static int QUICK = 5; :ss9-  
public final static int IMPROVED_QUICK = 6; [hFyu|I !  
public final static int MERGE = 7; Z:n33xh=<  
public final static int IMPROVED_MERGE = 8; .{8lG^0U<  
public final static int HEAP = 9; -D V;{8U4  
3^`bf=R  
public static void sort(int[] data) { w=f8UtY9@A  
sort(data, IMPROVED_QUICK); ^Xb!dnT.*a  
} JP@UvDE|  
private static String[] name={ mKn[>M1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0,/[r/=jT  
}; @-MrmF)<U  
Dxu )by  
private static Sort[] impl=new Sort[]{ _VMJq9.  
new InsertSort(), ! q1Ql18n  
new BubbleSort(), {+`ep\.$&  
new SelectionSort(), XRNL;X%}7  
new ShellSort(), Xi|v!^IT  
new QuickSort(), Sa<R8X' J  
new ImprovedQuickSort(), pF8'S{y  
new MergeSort(), vJcvyz#%1  
new ImprovedMergeSort(), 61C&vm  
new HeapSort() p]aIMF_  
}; {@3=vBl%O+  
_c #P  
public static String toString(int algorithm){ U O[p   
return name[algorithm-1]; m<076O4|`  
} hA~}6Qn  
JHMj4Zkp  
public static void sort(int[] data, int algorithm) { ?Ts Z_  
impl[algorithm-1].sort(data); WK<pZ *x  
} @yek6E&9  
pYa<u,>pN  
public static interface Sort { :Z+(H+lyZ  
public void sort(int[] data); 5 WAsEP  
} Dic(G[  
Uz62!)  
public static void swap(int[] data, int i, int j) { $[1 M2>[  
int temp = data; ,Qh4=+jwqn  
data = data[j]; y\%4Dir  
data[j] = temp; t71 0sWh{  
} 4 A  
} F 'h[g.\}  
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