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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。 o#1 $q`Z  
插入排序: j b!i$/%w  
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package org.rut.util.algorithm.support; 18:%~>.!  
0+b1vhQ  
import org.rut.util.algorithm.SortUtil; FHI ;)wn=  
/** ,5<Cd,`*  
* @author treeroot .(2ik5A%9  
* @since 2006-2-2 3"\lu?-E  
* @version 1.0 Pj% |\kbNs  
*/ V Jll  
public class InsertSort implements SortUtil.Sort{ \Y}8S/]  
mpJ#:}n  
/* (non-Javadoc) D^;Uq8NDKq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @"H >niG  
*/ <1M-Ro?5k  
public void sort(int[] data) { Aq7osU1B  
int temp; U :_^#\p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \1Em`nvOX  
} L_iFt!  
} Q&bM\;Ml  
} -z(+//K:#  
@Do= k  
} ;sFF+^~L  
[j'X;tVX{  
冒泡排序: c~ V*:$F  
,s;Uf F  
package org.rut.util.algorithm.support; 5l*&>C[(i  
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import org.rut.util.algorithm.SortUtil; 3=ymm^  
VY\&8n}e(  
/** 9'q*:&qq  
* @author treeroot <Q?F?.^e  
* @since 2006-2-2 UFuX@Lu0  
* @version 1.0 $iz|\m  
*/ 4+ Z]3oIRE  
public class BubbleSort implements SortUtil.Sort{ 3? +Hd  
{Y9q[D'g.  
/* (non-Javadoc) 7D5]G-}x.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H<N,%G  
*/ i K? w6  
public void sort(int[] data) { b;UJ 88  
int temp; cYt!n5w~W  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $E.I84UfX  
if(data[j] SortUtil.swap(data,j,j-1); N87B8rDl  
} ?FcAXA/J{  
} icK/],  
} uGlUc<B\*  
} a:6m7U)P#5  
Tnm.A?  
} M =r)I~  
5XB H$&Td  
选择排序: TRq6NB  
yz8jw:d^-  
package org.rut.util.algorithm.support; v_-dx  
gB'6`'  
import org.rut.util.algorithm.SortUtil; Q'0d~6n&{  
G'A R`"F  
/** sON|w86B  
* @author treeroot b SU~XGPB  
* @since 2006-2-2 @MCg%Afw  
* @version 1.0 g}',(tPMZ  
*/ ~Jz6O U*z  
public class SelectionSort implements SortUtil.Sort { [hj6N*4y  
S^\Vgi(  
/* n6a`;0f[R  
* (non-Javadoc) HC,Se.VYS  
* E~oOKQ5W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pIX`MlBdF  
*/ )+2hl  
public void sort(int[] data) { Jg| XH L)  
int temp; d-dEQKI?;  
for (int i = 0; i < data.length; i++) { N<injx  
int lowIndex = i; R*2E/8Ia  
for (int j = data.length - 1; j > i; j--) { !Q0w\j h  
if (data[j] < data[lowIndex]) { oM`0y@QCf  
lowIndex = j; &KRX[2  
} Npy :!  
} ^.NU|NQi'  
SortUtil.swap(data,i,lowIndex); @J`"[%U  
} Q$@I"V&G.  
} 6V01F8&w  
u:_,GQ )\  
} ;;N9>M?b  
OpYY{f  
Shell排序: AkQ ~k0i}b  
kpN)zxfk  
package org.rut.util.algorithm.support; %OOl'o"V{s  
`RL"AH:+  
import org.rut.util.algorithm.SortUtil; j#q-^h3H  
.ctw2x5W  
/** [3|P7?W/  
* @author treeroot 03#lX(MB  
* @since 2006-2-2 ut7zVp<"  
* @version 1.0 [K0(RDV)%  
*/ kL"2=7m;  
public class ShellSort implements SortUtil.Sort{ YteO 6A;  
I4i>+:_J  
/* (non-Javadoc) HCC#j9UN6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @r/n F5  
*/ wcY? rE9  
public void sort(int[] data) { #'9HU2  
for(int i=data.length/2;i>2;i/=2){ }Ud*TOo`  
for(int j=0;j insertSort(data,j,i); _>X+ZlpU:  
} (0_2sfS  
} Y glmX"fLf  
insertSort(data,0,1); <B6H. P =  
} J{fH ['tzO  
RdR p.pb8  
/** l]l'4@1   
* @param data 338k?nHxv  
* @param j GDiBl*D  
* @param i p4 ^yVa  
*/ n]o<S+z  
private void insertSort(int[] data, int start, int inc) { 3m!X/u  
int temp; LuvY<~u  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &Ys<@M7E:  
} C1 GKLl~  
} cB}D^O   
} Vb]=B~^`  
={@6{-tl  
} D7Q$R:6|  
> jc [nk  
快速排序: +*/Zu`kzX  
z/@slT  
package org.rut.util.algorithm.support; Od,qbU4O  
fSvM(3Y<Qh  
import org.rut.util.algorithm.SortUtil; _5Ct]vy  
R)s:rJQ=p  
/** ,S]7 'UP  
* @author treeroot jLHkOk5{:  
* @since 2006-2-2 Sk\K4  
* @version 1.0 Ls+2Zbh  
*/ Tqn@P  
public class QuickSort implements SortUtil.Sort{ 5f K_Aq{  
nazZ*lC  
/* (non-Javadoc) Gm^U;u}=f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EaY?aAuS:  
*/ kzUIZ/+ZL,  
public void sort(int[] data) { ^'{Fh"5  
quickSort(data,0,data.length-1); N]=q|D  
} 8\A#CQ5b  
private void quickSort(int[] data,int i,int j){ eF-."1  
int pivotIndex=(i+j)/2; qHlQ+:n  
file://swap .~~T\rmI  
SortUtil.swap(data,pivotIndex,j); " C Qa.%  
=wV<hg)C  
int k=partition(data,i-1,j,data[j]); m'=Crei  
SortUtil.swap(data,k,j); uGK.\PB$  
if((k-i)>1) quickSort(data,i,k-1); a![{M<Y~  
if((j-k)>1) quickSort(data,k+1,j); IDriGZZ<)6  
h_,i&d@(  
} j@3Q;F0ba  
/** r1{@Ucw2  
* @param data 9W1YW9rL  
* @param i DgQp HF  
* @param j +.b,AqJ/  
* @return .2Elr(&*h  
*/ b&N'C9/8  
private int partition(int[] data, int l, int r,int pivot) { 9x9T<cx  
do{ u(F_oZ~  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9ZsVy  
SortUtil.swap(data,l,r); w4{<n /"  
} paE[rS\  
while(l SortUtil.swap(data,l,r); 3J|F?M"N7  
return l; nRZ]z( b  
} \aUC(K~o\;  
V1 `o%;j  
} RmeD$>7  
SBk4_J/_  
改进后的快速排序: k:#!zK}  
[ =9T*Sp  
package org.rut.util.algorithm.support; cO+qs[ BQ  
k&vz 7Q`T  
import org.rut.util.algorithm.SortUtil; 2,b(,3{`4:  
BLf>_b Uk  
/** DGn;m\B  
* @author treeroot ;~ $'2f~U  
* @since 2006-2-2 tOd&!HYL  
* @version 1.0 -4IE]'##  
*/ +RMSA^  
public class ImprovedQuickSort implements SortUtil.Sort { i0kak`x0  
hPkWCoQpq  
private static int MAX_STACK_SIZE=4096; A,Vu\3HS  
private static int THRESHOLD=10; ub#a`  
/* (non-Javadoc) CMG&7(MR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }Gm>`cw-  
*/ S8wLmd>  
public void sort(int[] data) { DIfaVo/"  
int[] stack=new int[MAX_STACK_SIZE]; ^]0Pfna+N  
:tB1D@Cb6  
int top=-1; c&?m>2^6  
int pivot; /}fHt^2H  
int pivotIndex,l,r; gpvYb7Of0  
kY|utoAP  
stack[++top]=0; H.|#c^I  
stack[++top]=data.length-1; GxI!{oi2  
FF(#]vz'  
while(top>0){ `O!X((  
int j=stack[top--]; /h H  
int i=stack[top--]; lH x^D;m6  
RYQR(v  
pivotIndex=(i+j)/2; M2>Vj/  
pivot=data[pivotIndex]; tGh~!|P  
0$)>D==  
SortUtil.swap(data,pivotIndex,j); bz2ztH9 n  
~Z?TFg  
file://partition t~EPn.  
l=i-1; Vvn2 Ep  
r=j; 2~1SQ.Q<RY  
do{ Is)u }  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); m '|b GV  
SortUtil.swap(data,l,r); oWim}Er=  
} FxtQXu-g  
while(l SortUtil.swap(data,l,r); F|o:W75  
SortUtil.swap(data,l,j); iohop(LZ  
T@:Wp4>69  
if((l-i)>THRESHOLD){ 9~5uaP$S  
stack[++top]=i; jrlVvzZ  
stack[++top]=l-1; ~Ei$nV  
} ,]ma+(|  
if((j-l)>THRESHOLD){ UXc-k  
stack[++top]=l+1; hz;G$cuEE  
stack[++top]=j; h-#6av :  
} Ic"ybj`  
Pw7]r<Q  
} u<6<iD3y  
file://new InsertSort().sort(data); J!v3i*j\  
insertSort(data); iwZPpl ";  
} F3v !AvA|  
/** x=hiQ>BIO0  
* @param data -aPg#ub  
*/ ? Wr+Q  
private void insertSort(int[] data) { b9KP( _  
int temp; HZzDVCU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G_3O]BMKd)  
} j^j1  
} \:# L)   
} G~^r)fm_  
fo*2:?K&  
} H1pO!>M  
=)H.c uc  
归并排序: w(*vj  
+qtJaYf/0  
package org.rut.util.algorithm.support; c)TPM/>(p  
*v jmy/3  
import org.rut.util.algorithm.SortUtil; 2\A$6N ;_  
Ja7R2-0ii#  
/** dh`K`b4I  
* @author treeroot =w_Ype`  
* @since 2006-2-2 xaq-.IQAM$  
* @version 1.0 t9kzw*U9  
*/ ';w#w<yaI  
public class MergeSort implements SortUtil.Sort{ b,l$1{  
25nt14Y 0u  
/* (non-Javadoc) (Ft+uuG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (^8Y|:Tz  
*/ o]J{{M'E  
public void sort(int[] data) { P_dCR  
int[] temp=new int[data.length]; u<7/0;D#+  
mergeSort(data,temp,0,data.length-1); =\&;Fi]  
} =V, mtT  
DbBcQ%  
private void mergeSort(int[] data,int[] temp,int l,int r){ ~9a<0Mc?  
int mid=(l+r)/2; I+%[d^,  
if(l==r) return ; x*/t yZg6  
mergeSort(data,temp,l,mid); [64:4/<}  
mergeSort(data,temp,mid+1,r); !=*g@mgF  
for(int i=l;i<=r;i++){ o8V5w!+#  
temp=data; ?(' wn<  
} GfxZ'VIn  
int i1=l; fa jGZyd0:  
int i2=mid+1; |B?m,U$A!  
for(int cur=l;cur<=r;cur++){ X:f UI4  
if(i1==mid+1) h0*!;Z7  
data[cur]=temp[i2++]; u:6Ic)7'  
else if(i2>r) v+W&9>  
data[cur]=temp[i1++]; )al]*[lY  
else if(temp[i1] data[cur]=temp[i1++]; -]N x,{  
else 9tU]`f  
data[cur]=temp[i2++]; ''A_[J `>  
} [N-Di"  
} e&|'I"  
@ wGPqg  
} 6y-@iJ*ld;  
;V:i!u u  
改进后的归并排序: 7X`g,b!  
0#7>o^2  
package org.rut.util.algorithm.support; n*R])=F@c  
YquI$PV _  
import org.rut.util.algorithm.SortUtil; 'Cb6Y#6  
uanhr)Ys  
/** 8l>?Pv  
* @author treeroot 6 C1#/  
* @since 2006-2-2 J|W<;  
* @version 1.0 1jmjg~W  
*/ JK7G/]j+Ez  
public class ImprovedMergeSort implements SortUtil.Sort { A9KET$i@v  
.Yamc#A-  
private static final int THRESHOLD = 10; :(E@Gf  
5N#aXG^9  
/* A]_7}<<N  
* (non-Javadoc) NlA,'`,  
* oM X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lF<]8m%F  
*/ N~nziY*C,*  
public void sort(int[] data) { +RHS!0  
int[] temp=new int[data.length]; ^rB8? kt  
mergeSort(data,temp,0,data.length-1); aj-Km`5r}  
} k%]3vRo<  
f$o_e90mu  
private void mergeSort(int[] data, int[] temp, int l, int r) { vz@A;t  
int i, j, k; {UX!go^J  
int mid = (l + r) / 2;  g T6z9  
if (l == r) &pxg. 3  
return; J@/kIrx  
if ((mid - l) >= THRESHOLD) [7:,?$tC  
mergeSort(data, temp, l, mid); CQc+#nRe  
else o3XvRj  
insertSort(data, l, mid - l + 1); @JiLgIe `  
if ((r - mid) > THRESHOLD) 0.Q Ujw  
mergeSort(data, temp, mid + 1, r); %HhBt5w  
else ,5P0S0*{  
insertSort(data, mid + 1, r - mid); [CTnXb  
'9%\;  
for (i = l; i <= mid; i++) { B5,N7z34F  
temp = data; <X#C)-.  
} ^7`BP%6  
for (j = 1; j <= r - mid; j++) { [>vLf2OID  
temp[r - j + 1] = data[j + mid]; v1#otrf  
} ,X?{07gH  
int a = temp[l]; P7ao5NP  
int b = temp[r]; j}#w )M  
for (i = l, j = r, k = l; k <= r; k++) { bS{bkE>  
if (a < b) { m=1N>cq '  
data[k] = temp[i++]; !K#qeY}  
a = temp; K$z2YJ%  
} else { x[| }.Ew  
data[k] = temp[j--]; $o!zUH~'v  
b = temp[j]; tb 5`cube  
} k x8G  
} `](e:be}  
} qfX6TV5J}!  
ynp8r f  
/** +l42Awl>K  
* @param data .S EdY:  
* @param l l&[O  
* @param i ),_@WW;k  
*/ uIY#e<)}G  
private void insertSort(int[] data, int start, int len) { n5|fHk^s  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O4 w(T  
} "BAK !N$9  
} xKbXt;l2  
} SA:Zc^aV  
} D=TvYe  
(xycJ`N  
堆排序: ?C]vS_jAh  
>:SHV W  
package org.rut.util.algorithm.support; PhLn8jNti  
Q(G#W+r  
import org.rut.util.algorithm.SortUtil; pt?bWyKG  
NCveSP  
/** )',R[|<  
* @author treeroot {.`vs;U  
* @since 2006-2-2 @?ebuj5{e  
* @version 1.0 ]IaMp788  
*/ ~"gA,e-)  
public class HeapSort implements SortUtil.Sort{ rV.}PtcFY  
` #0:gEo  
/* (non-Javadoc) @b\$yB@z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1> ?M>vK  
*/ n>z9K')  
public void sort(int[] data) { IZf{nQ[0  
MaxHeap h=new MaxHeap(); >[f?vrz  
h.init(data); , };& tR  
for(int i=0;i h.remove(); 'I|v[G$l  
System.arraycopy(h.queue,1,data,0,data.length); j\yjc/m  
} XoK:N$\}t  
$L `d&$Vh  
private static class MaxHeap{ 'JtBZFq  
P-[-pi@  
void init(int[] data){ /|w6:;$;mn  
this.queue=new int[data.length+1]; `6;?9NI  
for(int i=0;i queue[++size]=data; e v}S+!|U  
fixUp(size); +SzU  
} 3qgS&js 7  
} uuEV_"X  
6dQ-HI*Y#  
private int size=0; a9e>iU  
2 B1q*`6R  
private int[] queue; je\Ph5"  
85= )lu  
public int get() { rCEyQ)R_}  
return queue[1]; !"AvY y9  
} m~BAyk^jo3  
TJd)K$O>  
public void remove() { .D~;u-%|F  
SortUtil.swap(queue,1,size--); fy1|$d{'  
fixDown(1); Mc lkEfn  
} W_293["lS  
file://fixdown S)(.,x  
private void fixDown(int k) { Ng&%o  
int j; - nm"of\o  
while ((j = k << 1) <= size) { 2YL?,uLS  
if (j < size %26amp;%26amp; queue[j] j++; 4(n-_BS  
if (queue[k]>queue[j]) file://不用交换 &$BjV{,/zc  
break; 1y &\5kB  
SortUtil.swap(queue,j,k); @3i\%R)n;  
k = j; bG"~"ipn%  
} +.8 \p5  
} >tS'Q`R  
private void fixUp(int k) { d7^}tM  
while (k > 1) { b#c:u2  
int j = k >> 1; &N9 a<w8+  
if (queue[j]>queue[k]) 'ycJMYP8  
break; Ep_HcX`  
SortUtil.swap(queue,j,k); OG~gFZr)6  
k = j; u2 I*-K  
} YpHg&|Fr  
} @)+AaC#-  
gk4;>}  
} 7O2/z:$f  
8LJ8 }%*  
} &, vcJ{.  
,oe <  
SortUtil: J-:.FKf\5l  
T  wB}l  
package org.rut.util.algorithm; ;<Sd~M4f  
hR n<em  
import org.rut.util.algorithm.support.BubbleSort; CZe ]kXNv  
import org.rut.util.algorithm.support.HeapSort; )CYGQMK  
import org.rut.util.algorithm.support.ImprovedMergeSort; ;1W6G=m  
import org.rut.util.algorithm.support.ImprovedQuickSort; <V'@ks%  
import org.rut.util.algorithm.support.InsertSort; QhFV xCA  
import org.rut.util.algorithm.support.MergeSort; 3yme1Mb  
import org.rut.util.algorithm.support.QuickSort; ? V1*cVD6i  
import org.rut.util.algorithm.support.SelectionSort; yu {d! {6  
import org.rut.util.algorithm.support.ShellSort; t,Lrfv])  
udH7}K v  
/** ]]![EHi(\  
* @author treeroot TprTWod2]t  
* @since 2006-2-2 LrfVh-}|:Y  
* @version 1.0 1nM  #kJ"  
*/ <{p4V|:  
public class SortUtil { 4KAZ ':  
public final static int INSERT = 1; &AMl:@p9  
public final static int BUBBLE = 2; mUC)gA/  
public final static int SELECTION = 3; PQt")[  
public final static int SHELL = 4; A Q U+mo  
public final static int QUICK = 5; L+F@:H6/0  
public final static int IMPROVED_QUICK = 6; f)rq%N &  
public final static int MERGE = 7; KkyVSoD\  
public final static int IMPROVED_MERGE = 8; S72+d%$  
public final static int HEAP = 9; YaqR[F  
k}CVQ@nd  
public static void sort(int[] data) { )m+W j  
sort(data, IMPROVED_QUICK); ssA`I<p#  
} A  'be8  
private static String[] name={ ZoqZap6e  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2W(s(-hD  
}; 3NqB <J  
\\ij(>CI  
private static Sort[] impl=new Sort[]{ :G=fl)!fE  
new InsertSort(), Ny7S  
new BubbleSort(), y7cl_rK  
new SelectionSort(), /<k/7TF`  
new ShellSort(), (/YHk`v2  
new QuickSort(), <nf@U>wlw  
new ImprovedQuickSort(), ]mq|w  
new MergeSort(), F<1fX7c  
new ImprovedMergeSort(), -IudgO]  
new HeapSort() qo~O|~  
}; EWt[z.`T1  
//MUeTxR  
public static String toString(int algorithm){  dFc':|  
return name[algorithm-1]; h4}84}5d  
} \K{ z  
]c*4J\s  
public static void sort(int[] data, int algorithm) { qZh/IW  
impl[algorithm-1].sort(data); =*.~BG  
} C =xa5Y  
P;no?  
public static interface Sort { ,Vax&n+J  
public void sort(int[] data); }#+^{P3;  
} rHI{aO7  
I,DS@SK  
public static void swap(int[] data, int i, int j) { QL/(72K  
int temp = data; rXq.DvQ  
data = data[j]; cZ*@$%_  
data[j] = temp; O\tb R=  
} xH,a=8&9  
} 7z,C}-q  
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