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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。 Gk{W:866  
插入排序: &1 oaZY w  
O<bDU0s{M  
package org.rut.util.algorithm.support; z,M'Tr.1|  
n~9 i^  
import org.rut.util.algorithm.SortUtil; nx D'r  
/** tb:    
* @author treeroot _,t&C7Yf;  
* @since 2006-2-2 M,ppCHy/$  
* @version 1.0 ?C FS}v  
*/ TJE% U0Ln  
public class InsertSort implements SortUtil.Sort{ I>d I[U  
Wf_CR(  
/* (non-Javadoc) 4@= aa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v?FhG b~1  
*/ Euqjxz  
public void sort(int[] data) { `~0P[>|+  
int temp; 9N<*S'Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zLo;.X[Y  
} KxGKA  
} m\/>C|f\  
} R9bhC9NP  
<r0.ppgY  
} NYGmLbq  
uSH> $;a  
冒泡排序: R&]c"cO L8  
^zKt{a  
package org.rut.util.algorithm.support; a4Ls^  
B<(Pd  
import org.rut.util.algorithm.SortUtil; omNpE_  
vuAQm}A4'g  
/** 0T1HQ  
* @author treeroot _s2m-jm7  
* @since 2006-2-2 { ( _B  
* @version 1.0 Ii,~HH  
*/ ~:2&/MOP?  
public class BubbleSort implements SortUtil.Sort{ C{DlcZ<  
&zO3qt6  
/* (non-Javadoc) +SO2M|ru&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C{8i7D  
*/ Gg'<Q.H  
public void sort(int[] data) { MJy;GzJ O  
int temp; F\zkyk 4  
for(int i=0;i for(int j=data.length-1;j>i;j--){ P\Ai|"=&]  
if(data[j] SortUtil.swap(data,j,j-1); ~6\& y  
} Fecx';_1`  
} mx:J>SPA8  
} 8e]z6:}'E  
} >0kmRVd  
Czq1 kz  
} xi;/^)r  
U? {'n#n 5  
选择排序: _{[k[]  
MV% :ES?  
package org.rut.util.algorithm.support; M ' a&  
'2 w XV;`  
import org.rut.util.algorithm.SortUtil; ,}eRnl\  
Y;'VosTD  
/** F_ ,L 2J  
* @author treeroot ;r gH}r  
* @since 2006-2-2 t|go5DXz4  
* @version 1.0 AD~~e% s=  
*/ 5{8x*PSl  
public class SelectionSort implements SortUtil.Sort { a v'd%LZP  
[`y:M&@  
/* C}n[?R  
* (non-Javadoc) i_[^s:*T  
* ?SB[lbU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aQ32p4C  
*/ XRClBTKF  
public void sort(int[] data) { nYI/&B{p  
int temp; b24NL'jm  
for (int i = 0; i < data.length; i++) { .jvSAV5B  
int lowIndex = i; b*btkaVue  
for (int j = data.length - 1; j > i; j--) { 2N L:\%wz  
if (data[j] < data[lowIndex]) { Cf.pTYSl  
lowIndex = j; NvQY7C  
} |WD,\=J2  
} #citwMW  
SortUtil.swap(data,i,lowIndex); l,imT$u  
} #]5&mKi  
} 9 Q0#We*  
_F}IF9{?G  
} _#/!s]$d#  
N>uA|<b,  
Shell排序: S^3g]5YX  
[$hptQv  
package org.rut.util.algorithm.support; f28gE7Y\a  
f?/|;Zo4  
import org.rut.util.algorithm.SortUtil; [z W_%O kP  
p2pTs&}S  
/** `E./p  
* @author treeroot dNR7e   
* @since 2006-2-2 -&qRo0^3  
* @version 1.0 3%It~o?  
*/ V-?sek{;  
public class ShellSort implements SortUtil.Sort{ P@gu~!  
?&whE!  
/* (non-Javadoc) DBu)xr}7A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EpFIKV!  
*/ GVjv** U  
public void sort(int[] data) { D=i0e8D!+  
for(int i=data.length/2;i>2;i/=2){ s[0prm5.  
for(int j=0;j insertSort(data,j,i); G;PbTsW  
} {{^Mr)]5K  
} Ma`   
insertSort(data,0,1); aHBByH  
} mp&Le YYn  
K $Mx}m7l  
/** F'V +2,.  
* @param data c7FfI"7HR  
* @param j ^ I{R[O'8  
* @param i DBj;P|L_  
*/ _9}x2uO~  
private void insertSort(int[] data, int start, int inc) { 4FfwpO3,Ku  
int temp; BxSk%$J  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xm<5S;E5U4  
} :0J-ek.;  
} jw`&Np2Q  
} kr/1Dsr4  
{u(}ED#p  
} x?k  
(&9DB   
快速排序: #U ",,*2  
"sX [p  
package org.rut.util.algorithm.support; DuTlYXM2^  
 2.HZ+1  
import org.rut.util.algorithm.SortUtil; 'U|MM;(  
9J-!o]f .b  
/** NDs]}5#   
* @author treeroot /{eih]`x(  
* @since 2006-2-2 .LeF|EQU\@  
* @version 1.0 9G`FY:(K  
*/ >.!5M L\  
public class QuickSort implements SortUtil.Sort{ .d#G]8suF  
H3p4,Y}'#  
/* (non-Javadoc) +P> A P&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X]+(c_i:hC  
*/ !Zk%P  
public void sort(int[] data) { f^[{k {t  
quickSort(data,0,data.length-1); ="#:=i]  
} Y\z^\k  
private void quickSort(int[] data,int i,int j){ ,p[\fT($]  
int pivotIndex=(i+j)/2; \,@Yl.,+  
file://swap V'HlAQr  
SortUtil.swap(data,pivotIndex,j); 5CH-:|(;=  
S`GXiwk  
int k=partition(data,i-1,j,data[j]); [B2>*UPl  
SortUtil.swap(data,k,j); Hnd9T(UB  
if((k-i)>1) quickSort(data,i,k-1); (!XYH@Mz<w  
if((j-k)>1) quickSort(data,k+1,j); JR? )SGB  
i(&6ys5  
} ^|F Vc48{  
/** s60:0>  
* @param data NE=#5?6%g7  
* @param i r2E>sHw  
* @param j 6*(h9!_T1  
* @return i#M a -0#  
*/ Y1U"HqNl*  
private int partition(int[] data, int l, int r,int pivot) { PO1:9  
do{ yVmtsQ-}a  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y:hCBgc;`c  
SortUtil.swap(data,l,r); YaY;o^11/  
} QigoRB!z#9  
while(l SortUtil.swap(data,l,r); Ads<-.R  
return l; ^;Hi/KvM\  
} FkJ>]k  
!Z+*",]_  
} 5ykk11!p$  
U'h[ {ek  
改进后的快速排序: )L(d$N=Bd  
vs'L1$L'c  
package org.rut.util.algorithm.support; J1c&"Oh  
{P<BJ52=  
import org.rut.util.algorithm.SortUtil; (8@h F#N1  
:ET3&J L  
/** MoKXl?B<  
* @author treeroot Oc"'ay(g  
* @since 2006-2-2 :~0^ib<v;  
* @version 1.0 9(N)MT5F  
*/ [o[v"e\w  
public class ImprovedQuickSort implements SortUtil.Sort { cmr6,3_  
njwR~aL`|  
private static int MAX_STACK_SIZE=4096; )/+eL RN5G  
private static int THRESHOLD=10; @KXz4PU  
/* (non-Javadoc) sS1J.R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o7 @4=m}  
*/ SqA+u/"j2  
public void sort(int[] data) { :,}:c%-^"  
int[] stack=new int[MAX_STACK_SIZE]; nuQLq^e  
_#^A:a^e8  
int top=-1; R.2KYhp ,  
int pivot; rmg";(I  
int pivotIndex,l,r; k^dCX+  
?{.b9`  
stack[++top]=0; 0oi5]f6g?8  
stack[++top]=data.length-1; \@PUljU]  
7QOC]:r  
while(top>0){ ,# jOf{L*  
int j=stack[top--]; N?mY|x\}wK  
int i=stack[top--]; j$mt*z L  
xo)?XFM2  
pivotIndex=(i+j)/2; -MHX1`P:Sn  
pivot=data[pivotIndex]; .2{C29g  
V=l Q}sBY  
SortUtil.swap(data,pivotIndex,j); s:jL/%+COZ  
;FgEE%  
file://partition [Tb3z:UUvf  
l=i-1; wJeqa  
r=j; U+RCQTo  
do{ !irX[,e  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /m{?o  
SortUtil.swap(data,l,r); 8|jX ~f  
} 7AtXG^lK  
while(l SortUtil.swap(data,l,r); #Zavdkw=d  
SortUtil.swap(data,l,j); /4-eoTxy  
;5oH6{7_Z  
if((l-i)>THRESHOLD){ 0JZq:hUd  
stack[++top]=i; W-]yKSob  
stack[++top]=l-1; |E_+*1lq.  
} R SWB!-  
if((j-l)>THRESHOLD){ aIt 0;D  
stack[++top]=l+1; Am=PUQF$  
stack[++top]=j; P #2TM  
} #Mem2cz  
1:{O RX[;  
} [>Kxm  
file://new InsertSort().sort(data); zk 'e6  
insertSort(data); 4qSS<SqY  
} qYu!:xa8  
/** C@?e`=9(  
* @param data RH'F<!p  
*/ *(SBl}f4l  
private void insertSort(int[] data) { A$"$`)P!  
int temp; ZV<y=F*~f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ff#N|L'9_  
} fN*4(yw  
} ,YMdXYu`s  
} k#=leu"I  
u, SX`6%  
} yA>p[F  
= cI\OsV&?  
归并排序: ;'18  
1\608~ZH  
package org.rut.util.algorithm.support; vVN[bD<  
"6NNId|Y  
import org.rut.util.algorithm.SortUtil; M"$RtS|h  
{u=\-|t  
/** DwrCysIK  
* @author treeroot rgZ rE;*;  
* @since 2006-2-2 QsF<=b~  
* @version 1.0 36Z`.E>~L  
*/ XOU-8;d  
public class MergeSort implements SortUtil.Sort{ x#gmliF  
q}A3"$-F  
/* (non-Javadoc) +q=jB-eIx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "KT nX#<0  
*/ {FmFu$z+[  
public void sort(int[] data) { u/:Sf*;?  
int[] temp=new int[data.length]; 53&xTcv}x  
mergeSort(data,temp,0,data.length-1); zUgkY`]:BJ  
} G-i_s6Wu  
Xie dgy  
private void mergeSort(int[] data,int[] temp,int l,int r){ w>q_8V_K  
int mid=(l+r)/2; uy-Ncy  
if(l==r) return ; xo 'w+Av  
mergeSort(data,temp,l,mid); TtjSLkF  
mergeSort(data,temp,mid+1,r); eWk2YP!  
for(int i=l;i<=r;i++){ B)cb}.N:  
temp=data; NizJq*V>  
} .-26 N6S  
int i1=l; v*]Xur6e}  
int i2=mid+1; YK+Z0ry  
for(int cur=l;cur<=r;cur++){ <C`eZ}Qqv  
if(i1==mid+1) \w_[tPz}  
data[cur]=temp[i2++]; >E,L"&_j  
else if(i2>r) %C][E^9  
data[cur]=temp[i1++]; _ktSTzH0  
else if(temp[i1] data[cur]=temp[i1++]; ?d#(ian  
else +4p ;4/=  
data[cur]=temp[i2++]; PaeafL65=  
} Pk]9.e1_  
} IlL   
v%7JZ<I'A  
} IguG0 3:.N  
PWD]qtr  
改进后的归并排序: l3|>*szX  
Cwa0!y5%  
package org.rut.util.algorithm.support; ^t%M   
L#@$Mtc  
import org.rut.util.algorithm.SortUtil; 0m!ZJHe  
dZYJ(7%  
/** nMoF;AdKm  
* @author treeroot K~%5iVO~\  
* @since 2006-2-2 U"kK]Stk<  
* @version 1.0 I%|s  
*/ KQZRzX>0  
public class ImprovedMergeSort implements SortUtil.Sort { K:50?r_-6  
%|* y/m  
private static final int THRESHOLD = 10; #YVDOR{z  
cCKda3v!O  
/* *ik)>c_  
* (non-Javadoc) B=/=U7T  
* >Ez}r(QQ^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ghQsS|)p.  
*/ 0 S8{VZpy  
public void sort(int[] data) {  !3M!p&  
int[] temp=new int[data.length]; ^a5~FI:  
mergeSort(data,temp,0,data.length-1); 4GejT(U  
} &'2l_b  
Y tj>U  
private void mergeSort(int[] data, int[] temp, int l, int r) { ] r+I D  
int i, j, k; 2xBGs9_Y  
int mid = (l + r) / 2; Jpnp'  
if (l == r) .@Sh,^v  
return; RXvcy<  
if ((mid - l) >= THRESHOLD) H$iMP.AK  
mergeSort(data, temp, l, mid); \/%Q PE8  
else =,Um;hU3r  
insertSort(data, l, mid - l + 1); a #**96Av  
if ((r - mid) > THRESHOLD) #^w 1!xXD  
mergeSort(data, temp, mid + 1, r); +mPB?5  
else }slEkpk? ]  
insertSort(data, mid + 1, r - mid); '~=xP  
ky"7 ^  
for (i = l; i <= mid; i++) { fb=vO U  
temp = data; l{ { #tW  
} 4[j) $!l`  
for (j = 1; j <= r - mid; j++) { w8Vzx8  
temp[r - j + 1] = data[j + mid]; md_s2d  
} \aRB   
int a = temp[l]; ;G&O"S><]c  
int b = temp[r]; ~i {)J  
for (i = l, j = r, k = l; k <= r; k++) { TU6EE  
if (a < b) { ~a)2 0  
data[k] = temp[i++]; r|$g((g  
a = temp; "d*  
} else { n8C {Okr  
data[k] = temp[j--]; Ok"wec+,  
b = temp[j]; 9uo\&,,  
} ]qQB+]WN  
} 2!`Z3>Oa  
} A[Xw|9  
cv&hT.1  
/** z`6KX93  
* @param data xBd% e-r  
* @param l ]sIFK  
* @param i ]z@]Fi33Y  
*/ R|yTUGY  
private void insertSort(int[] data, int start, int len) { HM x9M$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); c9K\K~bk  
} @XJv9aq  
} M QI=  
} VAz+J  
} !1]xKNp ]  
eVJL|uI|  
堆排序: P=g+6-1  
KJ |1zCM  
package org.rut.util.algorithm.support; *V+fRN4 W  
!b Km}1T  
import org.rut.util.algorithm.SortUtil; <Z wEdq  
 yw^, @'  
/** _z< q9:  
* @author treeroot Cr"hu;  
* @since 2006-2-2 EkPSG&6RZ  
* @version 1.0 R``qQ;cc  
*/ wjs7K|PK  
public class HeapSort implements SortUtil.Sort{ }\*|b@)]  
B!lw>rUMQ  
/* (non-Javadoc) >m46tfoM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 06r cW `  
*/ T~d';P  
public void sort(int[] data) { Z%{2/mQ  
MaxHeap h=new MaxHeap(); f:>jH+o.S  
h.init(data); e<pojb1Q  
for(int i=0;i h.remove(); 5 [*jfOz  
System.arraycopy(h.queue,1,data,0,data.length); Ei!z? sxzx  
} uDUSR+E>  
B$n\m854  
private static class MaxHeap{ dWEx55>,1  
-R]S)Odml  
void init(int[] data){ "^%Il  
this.queue=new int[data.length+1]; p^3d1H3   
for(int i=0;i queue[++size]=data; 5^i ^?  
fixUp(size); P^r8JhDJ  
} q1j[eru  
} "5FeP;  
37DvI&  
private int size=0; (nG  
Si(?+bda0c  
private int[] queue; }r[BME  
[\y>Gv%  
public int get() { jLU)S)  
return queue[1]; SX.v5plhc  
} XPSWAp)  
 G%{jU'2  
public void remove() { _,QUH"  
SortUtil.swap(queue,1,size--); bzTM{<]sv  
fixDown(1); G"(!5+DLy  
} ~5zhK:7c  
file://fixdown 4H)a7 <,  
private void fixDown(int k) { W\.(~-(So  
int j; [ CY=  
while ((j = k << 1) <= size) { j@f(cRAf#  
if (j < size %26amp;%26amp; queue[j] j++; #:X :~T  
if (queue[k]>queue[j]) file://不用交换 <U";V)  
break; 16U@o>O  
SortUtil.swap(queue,j,k); -rBj-4|"  
k = j; x4(WvQ%O#  
} *%.*vPJ  
} \ U_DTI  
private void fixUp(int k) { _{8boDX#  
while (k > 1) { 01b0;|  
int j = k >> 1; \hVFK6  
if (queue[j]>queue[k]) 9hQ{r 2  
break; -vQ`}e1  
SortUtil.swap(queue,j,k); m"5gzH  
k = j; +VDB\n   
} c'C2V9t  
} |gNOv;l  
`CBTZG09  
} }T@AoIR0t  
*^]ba>  
} #=2~MXa@z7  
5;+Bl@zGu  
SortUtil: X|:O`b$G  
i@6 kI C  
package org.rut.util.algorithm; uQ}kq7gd  
!{+(oDN  
import org.rut.util.algorithm.support.BubbleSort; (pl OV)  
import org.rut.util.algorithm.support.HeapSort; V3S`8VI  
import org.rut.util.algorithm.support.ImprovedMergeSort; tBt\&{=|D  
import org.rut.util.algorithm.support.ImprovedQuickSort; Gvwel!6  
import org.rut.util.algorithm.support.InsertSort; H'0S;A+Y6  
import org.rut.util.algorithm.support.MergeSort; !nVuvsbv  
import org.rut.util.algorithm.support.QuickSort; }j QwP3eY  
import org.rut.util.algorithm.support.SelectionSort; QH eUpJ/^  
import org.rut.util.algorithm.support.ShellSort; u<[Y6m  
8GX@76o  
/** >8c9-dTmf  
* @author treeroot 4f+Ke*^[RA  
* @since 2006-2-2 xE:p)B-]  
* @version 1.0 :v+ 39  
*/ zB4gnVhus|  
public class SortUtil { juM?y'A  
public final static int INSERT = 1; &j$k58mX  
public final static int BUBBLE = 2; o{/D:B  
public final static int SELECTION = 3; y_w4ei  
public final static int SHELL = 4; l)zS}"F,  
public final static int QUICK = 5; on~rrSK  
public final static int IMPROVED_QUICK = 6; Sn0 Gw  
public final static int MERGE = 7; UCFef,VW  
public final static int IMPROVED_MERGE = 8; fu/v1~X  
public final static int HEAP = 9; [>fE{ ~Y  
iqpy5  
public static void sort(int[] data) { gs'( px  
sort(data, IMPROVED_QUICK); *l}q,9iQ-  
} cK""Xz&m  
private static String[] name={ ZCa?uzeo]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" BX?Si1c  
};  z>!b  
?%?@?W>s@  
private static Sort[] impl=new Sort[]{ awUIYAgJ3  
new InsertSort(), ]Kd:ZmJ  
new BubbleSort(), 9tJiIr8i  
new SelectionSort(), '{EDdlX  
new ShellSort(), )%0#XC^/X5  
new QuickSort(), fz%urbJR  
new ImprovedQuickSort(), :jA~zHO  
new MergeSort(), a"}?{  
new ImprovedMergeSort(), w%htY.-  
new HeapSort() {ES3nCL(8  
}; /D eU`rj  
IP-mo!Y.  
public static String toString(int algorithm){ i;cqK&P;]  
return name[algorithm-1]; :Q 89j4,  
} L(iWFy1& T  
hTF]-& hZ  
public static void sort(int[] data, int algorithm) { W n|w~{d{  
impl[algorithm-1].sort(data); v vFX\j3  
} VE!h!`<k  
_d: l1jD  
public static interface Sort { l+@NjZGm<  
public void sort(int[] data); 3S Dw-k  
} ]kr OPM/  
=6ojkTk  
public static void swap(int[] data, int i, int j) { zg|]Ic  
int temp = data; 2$|WXYY  
data = data[j]; IRLT -  
data[j] = temp; <EJC.W WJa  
} /" ,]J  
} Av{1~%hU  
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