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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。 &NKb},~  
插入排序: ]f{3_M[  
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package org.rut.util.algorithm.support; 71n3d~!O>  
A^ofs*"Y  
import org.rut.util.algorithm.SortUtil; D%}rQ,*  
/** {o SdVRI  
* @author treeroot nuH=pIq6x  
* @since 2006-2-2 2##;[  
* @version 1.0 nz|6CP  
*/ ]"/SU6#4:  
public class InsertSort implements SortUtil.Sort{ d.|*sZ&3p  
Q.?(h! )9  
/* (non-Javadoc) /!?b&N/d)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +T\<oj%}2  
*/ qjObu\r  
public void sort(int[] data) { STl8h}C  
int temp; JC0#pU;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b(oe^jeGz  
} tD*k   
} et2;{Tb,5  
} r+8)<Xt+p  
#+QJ5VI :  
} mv>0j<C91  
Zs(BViTb|  
冒泡排序: ic5af"/(\  
#W6 6`{>  
package org.rut.util.algorithm.support; A!,c@Kv 3  
i=L 86Ks  
import org.rut.util.algorithm.SortUtil; j!@T@ 8J  
 )ut$644R  
/** 0cSm^a  
* @author treeroot Qo :vAv  
* @since 2006-2-2 EnGh&]  
* @version 1.0 [O<F`u"a  
*/ )w~1VcnJEp  
public class BubbleSort implements SortUtil.Sort{ +m]-)  
~n8UN<  
/* (non-Javadoc) m 62Zta  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8nn g^  
*/ e]nP7TIU  
public void sort(int[] data) { Auc&dpW  
int temp; <o9AjASv\,  
for(int i=0;i for(int j=data.length-1;j>i;j--){ k,$/l1D  
if(data[j] SortUtil.swap(data,j,j-1); 1$1>cuu  
} `-%dHvB^R  
} \?oT.z5VG&  
} H#7=s{u  
} $ K+| bb  
+_ /ys!  
} a_bZT4  
%19~9Tw  
选择排序: iZ>P>x\  
_p0gXb1m`  
package org.rut.util.algorithm.support; [<5/s$,i  
CVvl &on  
import org.rut.util.algorithm.SortUtil; w_o+;B|I  
~"0{<mMcX  
/** x&^Xgi?  
* @author treeroot :!l.ze{F  
* @since 2006-2-2 (&NLLrsio  
* @version 1.0 jJw  
*/ jygUf|  
public class SelectionSort implements SortUtil.Sort { ]KEE+o  
)b (+=  
/* #'O9Hn({  
* (non-Javadoc) )Nx*T9!Q  
* (1q(6!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n|?sNM<J3  
*/ |=v,^uo  
public void sort(int[] data) { "9d Z z/{  
int temp; % >a /m.$  
for (int i = 0; i < data.length; i++) { ygV_"=+|N  
int lowIndex = i; ern\QAhXX  
for (int j = data.length - 1; j > i; j--) { Z2@e~&L  
if (data[j] < data[lowIndex]) { :R +BC2x  
lowIndex = j; *g %bdO  
} TghT{h@  
} >r C*.  
SortUtil.swap(data,i,lowIndex); M:(.aEe  
} )MSCyPp5  
} @aN~97 H\  
7Y-Q, ?1  
} #g@4c3um|  
<,it<$f#  
Shell排序: cUP1Uolvn  
N-b'O`C  
package org.rut.util.algorithm.support; TD*AFR3Oz  
%-fS:~$  
import org.rut.util.algorithm.SortUtil; x4>"m(&%  
7)1%Z{Dy  
/** BMQ4i&kF|  
* @author treeroot !gV{[j?~zr  
* @since 2006-2-2 cZ !$XXA`  
* @version 1.0 82+2 PE{  
*/ ReD]M@;  
public class ShellSort implements SortUtil.Sort{ THX% z `  
6:8Nz   
/* (non-Javadoc) ]8OmYU%6V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) As5l36  
*/ kI04<!  
public void sort(int[] data) { ~iiDy;"  
for(int i=data.length/2;i>2;i/=2){ iD%a;]  
for(int j=0;j insertSort(data,j,i); |;(P+Q4lB  
} 8 "NPj0  
} S76MY&Vx23  
insertSort(data,0,1); pZ[|Q2(  
} i"Hc(lg  
4JXvP1`  
/** K0o${%'@7  
* @param data 7BqP3T=&_  
* @param j x $[_Hix  
* @param i SYQP7oG9oQ  
*/ F4"bMN  
private void insertSort(int[] data, int start, int inc) { @].!}tz  
int temp; E@)'Z6r1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -$#2?/uqC  
} a{}#t}  
} ~#VDJ[Z  
} [g: cG  
50A\Y)i_mZ  
} nFI<Te^)  
%[~g84@  
快速排序: = \oW {?  
r~7}w4U  
package org.rut.util.algorithm.support; 6@47%%,}  
 @e\ @EW  
import org.rut.util.algorithm.SortUtil; lfd-!(tXD  
c=?6`m,"M  
/** t;PG  
* @author treeroot 2u5\tp?8  
* @since 2006-2-2 (Uu5$q(  
* @version 1.0 $\1M"a}F  
*/ XhWo~zh"  
public class QuickSort implements SortUtil.Sort{ y0?HZ Xq  
Y[>h |@  
/* (non-Javadoc) 9AQ,@xP|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `(P71T  
*/ (~5]1S}F  
public void sort(int[] data) { & @_PY  
quickSort(data,0,data.length-1); ySDo(EI4  
} d ( ru5*p  
private void quickSort(int[] data,int i,int j){ 3,*A VcQA  
int pivotIndex=(i+j)/2; GNB'.tJ:0Y  
file://swap FzCXA=m  
SortUtil.swap(data,pivotIndex,j); c(b`eUOO  
@8aV*zjB  
int k=partition(data,i-1,j,data[j]); z?kE((Ey  
SortUtil.swap(data,k,j); pEN`6*  
if((k-i)>1) quickSort(data,i,k-1); U,fPG/9  
if((j-k)>1) quickSort(data,k+1,j); q@VIFmqY!  
+ !nf?5;  
}  rf'A+q  
/** \`2EfYJ{  
* @param data lZ2g CZ  
* @param i $83Qd  
* @param j QK#qW-49O  
* @return usoyH0t!?  
*/ xdaq` ^Bbt  
private int partition(int[] data, int l, int r,int pivot) { 0@E I@X;q  
do{ 7 TM-uA$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K$:btWSm  
SortUtil.swap(data,l,r); `qCL&(`%  
} S+mBVk"-~S  
while(l SortUtil.swap(data,l,r); #(a;w  
return l; f&Juq8s_0  
} M%$- c3x  
$$B#S '  
} 6y{CM/DC  
X&M04  
改进后的快速排序: I%z,s{9p  
. lSoC`HE  
package org.rut.util.algorithm.support; .[?2_e#9%  
LGYg@DR  
import org.rut.util.algorithm.SortUtil; %."w]fy>P  
'_91(~P  
/** $L'[_J  
* @author treeroot sM9utR  
* @since 2006-2-2 fK^;?4  
* @version 1.0 ]KUeSg|  
*/ +Je%8jH  
public class ImprovedQuickSort implements SortUtil.Sort { *qr>x8OGp  
Y44[2 :m  
private static int MAX_STACK_SIZE=4096; +h1X-K:I  
private static int THRESHOLD=10; a3Xd~Qs  
/* (non-Javadoc) aZq7(pen  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; 2aPhA  
*/ u!FF{~5cs  
public void sort(int[] data) { B~YOU 3  
int[] stack=new int[MAX_STACK_SIZE]; c+##!_[9  
/.t1Ow  
int top=-1; }:]CXrdg>  
int pivot; R)=){SI:1)  
int pivotIndex,l,r; M>{*PHze0  
nIfp0U*  
stack[++top]=0; 1 q|iw  
stack[++top]=data.length-1; xg'xuz$U  
(7"CYAe:;  
while(top>0){ qsYg%Z  
int j=stack[top--]; (543`dqAmC  
int i=stack[top--]; Qs<L$"L1  
8\+DSA  
pivotIndex=(i+j)/2; 4)p ID`  
pivot=data[pivotIndex]; okO\A^F  
;Qq7@(2y  
SortUtil.swap(data,pivotIndex,j); 9&Z+K'$=  
qXoq< |  
file://partition Dnd  
l=i-1; RW<4",  
r=j; @yF >=5z:  
do{ FgMQ=O2  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); h%sw^;\!  
SortUtil.swap(data,l,r); #6C<P!]V  
} Qve5qJ  
while(l SortUtil.swap(data,l,r); mA^3?y j  
SortUtil.swap(data,l,j); ^,`]Q)P^  
G[{Av5g mx  
if((l-i)>THRESHOLD){ lWUQkS  
stack[++top]=i; k+hl6$:Qj%  
stack[++top]=l-1; `r0lu_.$]4  
}  %Nx,ZD@  
if((j-l)>THRESHOLD){ p ^9o*k`u  
stack[++top]=l+1; & u6ydN1xe  
stack[++top]=j; 7W>(T8K X\  
} #oN}DP  
9ZuKED  
} {e0(M*u  
file://new InsertSort().sort(data); .eyJ<b9  
insertSort(data);  %\~U>3Q  
} VLoRS)   
/** ?6h~P:n.  
* @param data QvJ29  
*/ -vc ,O77z"  
private void insertSort(int[] data) { ScmwHid:\  
int temp; CY$ 1;/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ant2];0p  
} hDc2T  
} { _Y'%Ggh  
} }rF4M1+B\  
.kJu17!  
} vI:_bkii  
;j+*}|!  
归并排序: q_[`PYT  
9WV8ZP  
package org.rut.util.algorithm.support; 4M+f#b1  
RLcC>Z  
import org.rut.util.algorithm.SortUtil; )19#g1rn5  
qLl4t/p  
/** 1K'cT\aFm  
* @author treeroot f*T}Ov4  
* @since 2006-2-2 ,fo7. h4{  
* @version 1.0 XXeDOrb  
*/ *:`fgaIDa  
public class MergeSort implements SortUtil.Sort{ MPYYTQ1FB  
wNUcL*n  
/* (non-Javadoc) ID,os_ T=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XinKG< 3!  
*/ uA cvUN-@  
public void sort(int[] data) { V}Oz!  O  
int[] temp=new int[data.length]; 5r d t  
mergeSort(data,temp,0,data.length-1); JOs kf(  
} ?v'CuWS  
J|HV8  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7e D` is  
int mid=(l+r)/2; ]I]G3 e  
if(l==r) return ; ;";>7k/}  
mergeSort(data,temp,l,mid); dP#7ev]'  
mergeSort(data,temp,mid+1,r); &3)6WD?:U  
for(int i=l;i<=r;i++){ dF|R`Pa2ML  
temp=data; ZVit] 3hd  
} x@:98P  
int i1=l; kV3LFPf>0  
int i2=mid+1; ?}EWfsA  
for(int cur=l;cur<=r;cur++){ ` M-  
if(i1==mid+1) X7gB.=\X  
data[cur]=temp[i2++]; |:u5R%  
else if(i2>r) ISTAJ8" D  
data[cur]=temp[i1++]; % 3fpIzm  
else if(temp[i1] data[cur]=temp[i1++]; n"Jj'8k  
else !"aGo1 $$  
data[cur]=temp[i2++]; 0BAZWm  
} oeI[x  
} *$/Go8t4u  
f/Z-dM\e  
} {nS(B  
E;"VI2F  
改进后的归并排序: A.YK=_J  
1k"i"kRM  
package org.rut.util.algorithm.support; ?Qts2kae#  
.dvs&+I  
import org.rut.util.algorithm.SortUtil; '%YTM N@  
.I>CL4_  
/** x/0x&la  
* @author treeroot b0tbS[j  
* @since 2006-2-2 psS^  
* @version 1.0 .R S  
*/ LOgB_$9_3  
public class ImprovedMergeSort implements SortUtil.Sort { ]]5(:>l  
jASK!3pY  
private static final int THRESHOLD = 10; #X6=`Xe#  
v v   
/* z,VXH ?.Zo  
* (non-Javadoc) Yt r*"-  
* `2xt%kC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XD[9wd5w8  
*/ c|4_nT 2  
public void sort(int[] data) { =E~_F>SD  
int[] temp=new int[data.length]; 9AD0|,g  
mergeSort(data,temp,0,data.length-1); aQso<oK  
} f_:>36{1^!  
J,=^'K(  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5+)_d%v=6!  
int i, j, k; za8+=?  
int mid = (l + r) / 2; YT@H^=  
if (l == r) 0BOL0<Wq  
return; [c99m:*+  
if ((mid - l) >= THRESHOLD) %Wc$S]>i  
mergeSort(data, temp, l, mid); LC0-O1  
else -1R7 8(1  
insertSort(data, l, mid - l + 1); mUiJ@  
if ((r - mid) > THRESHOLD) r&XxF >  
mergeSort(data, temp, mid + 1, r); X0KUnxw  
else zXd#kw;  
insertSort(data, mid + 1, r - mid); 5%DHF-W)  
nYK!'x$  
for (i = l; i <= mid; i++) { =e6!U5 f  
temp = data; <*p  
} 14y>~~3C4  
for (j = 1; j <= r - mid; j++) { V("T9g  
temp[r - j + 1] = data[j + mid]; t1aKq)?  
} &2W`dEv]?  
int a = temp[l]; W#9LK Jj  
int b = temp[r]; NV`7VYU  
for (i = l, j = r, k = l; k <= r; k++) { r \} O{ZO  
if (a < b) { cP0(Q+i7  
data[k] = temp[i++]; EFs\zWF  
a = temp; k:1|Z+CJ  
} else { xf{=~j/L  
data[k] = temp[j--]; K*"Fpx{M  
b = temp[j]; Vb~;"WABo  
} 3d_g@x#9  
} 1sfs!b&E  
} ~@iYP/=/Q  
kwFo*1 {  
/** Km0P)Z  
* @param data d,t'e?  
* @param l T{ /\q 5  
* @param i PMiG:bM  
*/ o(xt%'L`t  
private void insertSort(int[] data, int start, int len) { ;B"S*wYMN  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4rNuAK`2  
} BCr*GtR)W  
} 1ka58_^  
} mmEe@-lE  
} vLM-v  
cA+O]",}  
堆排序: ?w@KF%D  
d^XRkB:h  
package org.rut.util.algorithm.support; Fi#b0S  
kn6X I*  
import org.rut.util.algorithm.SortUtil; \J{ %xW>  
{s[,CUL0  
/** Je~<2EsQ  
* @author treeroot +/8KN  
* @since 2006-2-2 PvS\  
* @version 1.0 &$_#{?dPt  
*/ `~ R%}ID  
public class HeapSort implements SortUtil.Sort{ Iy {&T#e"  
 <:`x> _  
/* (non-Javadoc) #^< Rx{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `z`"0;,7S  
*/ }m-+EUEo9  
public void sort(int[] data) { |",/  
MaxHeap h=new MaxHeap(); ILXVyU  
h.init(data); 3 e<sNU?  
for(int i=0;i h.remove(); :8Jn?E (36  
System.arraycopy(h.queue,1,data,0,data.length); KEvT."t  
} 0p ZX_L'  
+8q]O%B   
private static class MaxHeap{ MIWI0bnf  
8w4cqr4m  
void init(int[] data){ P/hIJV[  
this.queue=new int[data.length+1]; o_ SR  
for(int i=0;i queue[++size]=data; x-ShY&k  
fixUp(size); Q::6|B,G  
} a$'= a09  
} {afR?3GK  
CZ_ (IT7  
private int size=0; bcZ s+FOPd  
[#6Eax,j  
private int[] queue; Z,m;eCLG]  
gdyP,zMD7  
public int get() { ,Q8)r0c  
return queue[1]; !&OybjQ  
} Y;WHjW(K  
3xGk@ 333  
public void remove() { Wo+'j $k  
SortUtil.swap(queue,1,size--); :3Hr: ~  
fixDown(1); X(ZouyD<  
} 7'9~Kx&+  
file://fixdown F2$Z4%x#  
private void fixDown(int k) { U[UjL)U  
int j; {`vv-[j|  
while ((j = k << 1) <= size) { -hIDL'5u-I  
if (j < size %26amp;%26amp; queue[j] j++; SMdQ,n1]  
if (queue[k]>queue[j]) file://不用交换 #(G#O1+  
break; U`fxe`nVa  
SortUtil.swap(queue,j,k); { f@k2^  
k = j; lIj2w;$v  
} n/fMq,<8  
} I?mU_^no  
private void fixUp(int k) { ,#P eK(  
while (k > 1) { |tU4(hC  
int j = k >> 1; 3tlA! e  
if (queue[j]>queue[k]) 7Bhi72&6  
break; >1=sw qa  
SortUtil.swap(queue,j,k); D20n'>ddg  
k = j; {$ghf"  
} ?=;dNS@i@  
} |-c)OS3#D  
420cJ{;A  
} 6R+m;'  
):lq}6J#  
} ` qqUuFMM  
\y9( b  
SortUtil: SqhG\qE{Qj  
(bk~,n_  
package org.rut.util.algorithm;  d!%:Ok  
W^Jh'^E  
import org.rut.util.algorithm.support.BubbleSort; )kSE5|:pi  
import org.rut.util.algorithm.support.HeapSort; I-Ya#s#m  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8Ilg[Drj*  
import org.rut.util.algorithm.support.ImprovedQuickSort; h4 s!VK1X  
import org.rut.util.algorithm.support.InsertSort; n 4:Yc@,  
import org.rut.util.algorithm.support.MergeSort; P7;=rSW  
import org.rut.util.algorithm.support.QuickSort; {U&*8Q(/  
import org.rut.util.algorithm.support.SelectionSort; =Zcbfo_&  
import org.rut.util.algorithm.support.ShellSort; P d@y+|  
x>^r%<WbX  
/** |.x |BJ  
* @author treeroot 0^Vc,\P?  
* @since 2006-2-2 vt3yCS  
* @version 1.0 n"'1.  
*/ }>\+eG  
public class SortUtil { |RBgJkS;8  
public final static int INSERT = 1; 6_a42#  
public final static int BUBBLE = 2; U[1Ir92:  
public final static int SELECTION = 3; LY%`O#i.  
public final static int SHELL = 4; >W= 0N (  
public final static int QUICK = 5; /h=:heS4$  
public final static int IMPROVED_QUICK = 6; @3/.W+  
public final static int MERGE = 7; P%8zxU;  
public final static int IMPROVED_MERGE = 8; E4^zW_|xE  
public final static int HEAP = 9; R&13P&:g  
fdIk{o  
public static void sort(int[] data) { 5gV%jQgkC  
sort(data, IMPROVED_QUICK); 0s"g%gq|  
} $F!)S  
private static String[] name={ 2YD;Gb[8  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }VlX!/42  
}; ~ l~ai>/  
\Lxsg! wtJ  
private static Sort[] impl=new Sort[]{ D}1Z TX_  
new InsertSort(), Ij_Y+Mnl4:  
new BubbleSort(), >E&m Np  
new SelectionSort(), 6mr5`5~w  
new ShellSort(), \K+LKa)  
new QuickSort(), i?uJ<BdU[  
new ImprovedQuickSort(), Z }(,OZh  
new MergeSort(), 3+gp_7L  
new ImprovedMergeSort(), n22k<@y  
new HeapSort() SqL8MKN)  
}; -I7"9}j3  
q(0V#kKC  
public static String toString(int algorithm){ ">QNiR!  
return name[algorithm-1]; f S50  
} d(RSn|[0  
K4]c   
public static void sort(int[] data, int algorithm) { k23*F0Dv  
impl[algorithm-1].sort(data); 0*S2_&Q)  
} +@),Fk_  
e;:~@cB,c  
public static interface Sort { .,t"i C:E  
public void sort(int[] data); N5u.V\F!z\  
} Zi47)8  
;W6P$@'zs  
public static void swap(int[] data, int i, int j) { x/Pi#Xm  
int temp = data; ~C6Qp`VF  
data = data[j]; gz6BfHQG  
data[j] = temp; hC@oyC(4  
} HMbF#!E  
} Mq!03q6  
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