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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。 A` x_M!m  
插入排序: <\< [J0  
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package org.rut.util.algorithm.support; '`$z!rA  
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import org.rut.util.algorithm.SortUtil; D3s]49j)  
/** hce *G@b  
* @author treeroot ~wmc5L/!?  
* @since 2006-2-2 x}t,v.:  
* @version 1.0 #'N"<o[  
*/ RHc63b\  
public class InsertSort implements SortUtil.Sort{ w,fA-*bZ 0  
5(0f"zY  
/* (non-Javadoc) (he cvJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7/nnl0u8  
*/ $Cw> z^}u  
public void sort(int[] data) { !e?g"5r{Bv  
int temp; t{n|!T&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D7.|UG?G  
} 6KuB<od  
} 4<b=;8  
} SXfuPM  
{//;GC*  
} e|)6zh<O:  
>CtT_yhx  
冒泡排序: C'mYR3?m;  
R#OVJ(#  
package org.rut.util.algorithm.support; ?-mDvW  
<smi<syx  
import org.rut.util.algorithm.SortUtil; 41f4zisZ  
`NqX{26GV+  
/** *GxOiv7"4W  
* @author treeroot a g Za+a  
* @since 2006-2-2 ZPHiR4fQli  
* @version 1.0 l<fZt#T  
*/ $e66jV  
public class BubbleSort implements SortUtil.Sort{ }}Gz3>?24=  
^V]DQ%v"I  
/* (non-Javadoc) #w\Bc\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o  RT<h  
*/ egcJ@Of  
public void sort(int[] data) { 2%Bq[SMuN  
int temp; fx &b*O C  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $^|I?5xD  
if(data[j] SortUtil.swap(data,j,j-1); ]B'Ac%Rx  
} 88\0opL-  
} jb~2f2vUa  
} $2u^z=`b!%  
} HPT{83  
\*{tAF  
} U40adP? a  
Jj=0{(X  
选择排序: [C)JI;\  
KLqn`m`O;  
package org.rut.util.algorithm.support; 6q^Tq {I  
%Z|]"=;6  
import org.rut.util.algorithm.SortUtil; . C_\xb  
.kO!8Q-;%  
/** WVaIC$Y  
* @author treeroot _jkH}o '  
* @since 2006-2-2 b'\a 4  
* @version 1.0 /">A3bq  
*/ -:92<G\D  
public class SelectionSort implements SortUtil.Sort { q:A{@kFq_  
a%f?OsY  
/* 'Oyx X  
* (non-Javadoc) Y{yN*9a79  
* Hd)z[6u8eT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c5~d^  
*/ TNY d_:j  
public void sort(int[] data) { hZ_0lX}  
int temp; ^zjQ(ca@"x  
for (int i = 0; i < data.length; i++) { 0@;kD]Z  
int lowIndex = i; Z Z1s}TG  
for (int j = data.length - 1; j > i; j--) { M XB fX  
if (data[j] < data[lowIndex]) { @o&.]FZs  
lowIndex = j; 3fC|}<Wzt  
} xi5/Wc6  
} C~\/FrO?  
SortUtil.swap(data,i,lowIndex); @R+bR<}]  
} \Kh@P*7  
} Of| e]GR  
DtBIDU]  
} }q0lbwYlb  
XAN{uD^3\%  
Shell排序: v/%q*6@  
UO-<~DgH  
package org.rut.util.algorithm.support; FQNw89g  
0:K4,  
import org.rut.util.algorithm.SortUtil; YXC?q  
Jz(!eTVs  
/** =\v./Q-  
* @author treeroot W`zY\]  
* @since 2006-2-2 <a>\.d9#)7  
* @version 1.0 $,+'|_0yM  
*/ A/kRw'6  
public class ShellSort implements SortUtil.Sort{ w3j51v` 0'  
![O@{/  
/* (non-Javadoc) IEb"tsel  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .:eNL]2%:  
*/ ]V9z)uz  
public void sort(int[] data) { gemjLuf  
for(int i=data.length/2;i>2;i/=2){ fneg[K  
for(int j=0;j insertSort(data,j,i); :v/6k  
} \<ohe w  
}  (`0dO8  
insertSort(data,0,1); JM8 s]&  
} dt NHj/\  
d\nBc6  
/** D}Jhg`9  
* @param data $#V ^CmW.  
* @param j k^A Y g!~  
* @param i cE x$cZRMI  
*/ i?^C c\gH  
private void insertSort(int[] data, int start, int inc) { |.D_[QI  
int temp; 5u ED  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); USVM' ~p I  
} :P$I;YY=A  
} 5H_%inWM  
} 3HsjF5?W  
,6[}qw) *  
} -e_+x'uF  
5[WhjTo  
快速排序: {Kp<T  
W68d"J%>_  
package org.rut.util.algorithm.support; A:"J&TbBx  
=2%EIZ0oW  
import org.rut.util.algorithm.SortUtil; \! 8`kC  
.ON+ ( #n  
/** a7G0  
* @author treeroot gI A{6,A  
* @since 2006-2-2 c"+N{$ vp  
* @version 1.0 yVPkJ  
*/ #UREFwSL  
public class QuickSort implements SortUtil.Sort{ v2<roG6.V  
^ K8JE,  
/* (non-Javadoc) _`!@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fjc+{;x  
*/ \6B,\l]$t@  
public void sort(int[] data) { @Kri)U i  
quickSort(data,0,data.length-1); \mZ\1wzn'{  
} uNLB3Rdy}  
private void quickSort(int[] data,int i,int j){ w;$@</  
int pivotIndex=(i+j)/2; S3"js4a  
file://swap M%7H-^{  
SortUtil.swap(data,pivotIndex,j); JL1%XQ i  
 z"BV+  
int k=partition(data,i-1,j,data[j]); rVkoj;[  
SortUtil.swap(data,k,j); J.x>*3< l  
if((k-i)>1) quickSort(data,i,k-1); D5X;hd  
if((j-k)>1) quickSort(data,k+1,j); H3 _7a9  
FAu G`zu  
} an3HKfv  
/** ;??wLNdf-  
* @param data Mj$dDtw  
* @param i fSp(}'m2L  
* @param j 3mn0  
* @return JWG7QH  
*/ &?3?8Q\  
private int partition(int[] data, int l, int r,int pivot) { EmNB}\IYU  
do{ +P6#7.p`Z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); RM53B  
SortUtil.swap(data,l,r); z;x `dOP  
} `4s5yNUi=  
while(l SortUtil.swap(data,l,r); 5Ah-aDBj  
return l; h Ia{s)  
} 5=Bj?xb$'  
w <]7:/  
} uK]@! gz  
6wzF6] @O  
改进后的快速排序: zTY|Z@:  
ok X\z[X  
package org.rut.util.algorithm.support; x&R&\}@G m  
!D%*s,t\'  
import org.rut.util.algorithm.SortUtil; 2]NP7Ee8 Z  
K@VXFV  
/** -5\aL"?4  
* @author treeroot Sm#;fx+  
* @since 2006-2-2 vII&v+C  
* @version 1.0 U-TwrX  
*/ |6B:tw/.  
public class ImprovedQuickSort implements SortUtil.Sort { 32:,g4!~6  
%dZD;Vhg  
private static int MAX_STACK_SIZE=4096; xtjTU;T  
private static int THRESHOLD=10; 9Q :IgY?T  
/* (non-Javadoc) ?{qw /&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vnz.81OR  
*/ eEJ8j_G  
public void sort(int[] data) { # RJy  
int[] stack=new int[MAX_STACK_SIZE]; L&ws[8-  
;:*o P(9k  
int top=-1; {549&]/o  
int pivot; L4sN)EI  
int pivotIndex,l,r; h_]3L/  
9G_=)8sOV  
stack[++top]=0; `. %;|"xR  
stack[++top]=data.length-1; d8M"vd  
FStE/2?  
while(top>0){ ?OKm~ Ek  
int j=stack[top--]; 7V0:^Jov  
int i=stack[top--]; MV$>|^'em  
#`a-b<uz  
pivotIndex=(i+j)/2; UVu"meZX  
pivot=data[pivotIndex]; #`GW7(M  
G"MpA[a_  
SortUtil.swap(data,pivotIndex,j); z$G?J+?J  
p%IR4f  
file://partition *ILS/`mdav  
l=i-1; q30WUO;  
r=j; YH<F~F _  
do{ ~N[hY1}X[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); CpS' 2@6  
SortUtil.swap(data,l,r); -7ct+3"J  
} /_,~dt  
while(l SortUtil.swap(data,l,r); j %TYyL-  
SortUtil.swap(data,l,j); =[{Pw8['  
q22cp&gmX  
if((l-i)>THRESHOLD){ kRiWNEw  
stack[++top]=i; }(E6:h;}~  
stack[++top]=l-1; T<54qe4`p  
} a\}|ikiE  
if((j-l)>THRESHOLD){ e%bER ds  
stack[++top]=l+1; X 3L9j(  
stack[++top]=j; w#F+rh3  
} |@nvg>mu  
ZX-9BJ`Q  
} jT: :o  
file://new InsertSort().sort(data); d?N"NqaN  
insertSort(data); kTi QO2H  
} 1>%SSQ  
/** zp4ru\  
* @param data ?%Y?z ]L#  
*/ 3!Qt_,  
private void insertSort(int[] data) { ~n[LL)v  
int temp; 7gVWu"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A</[Q>8  
} %hrv~=  
} Qb|w\xT^Y  
} ?qO,=ms>-  
YfMe69/0I  
} 'EZ[aY!);  
EE}NA{b  
归并排序: -&)^|Atm  
,;+\!'lS  
package org.rut.util.algorithm.support; 7Wb.(` a<  
lR.a3.~  
import org.rut.util.algorithm.SortUtil; {+xUAmd  
1.,mNY^UN  
/** d`~#uN {  
* @author treeroot 1xguG7  
* @since 2006-2-2 c+a f=ac  
* @version 1.0 f{AgKW9"  
*/ i"rMP#7  
public class MergeSort implements SortUtil.Sort{ a|nlmH"l  
S_bay8L1  
/* (non-Javadoc) +=k?Dp[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -m|b2g}"3  
*/ rG\m]C3E  
public void sort(int[] data) { Czv lZDo  
int[] temp=new int[data.length]; 'R,d?ikY  
mergeSort(data,temp,0,data.length-1); ZC2C`S\xr  
} 5?O/Aub  
Q`vyDoF  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?>%u[g   
int mid=(l+r)/2; k5/nAaiVE  
if(l==r) return ; %+I(S`}  
mergeSort(data,temp,l,mid); Y~vTFOI  
mergeSort(data,temp,mid+1,r); U~H'c p  
for(int i=l;i<=r;i++){ K&)a3Z=(.  
temp=data; ]#BXaBVMY  
} ]Rj"/(X,  
int i1=l; >`{i[60r  
int i2=mid+1; {Y0I A97,  
for(int cur=l;cur<=r;cur++){ (Wx)YI  
if(i1==mid+1) Ap!UX=HBb  
data[cur]=temp[i2++]; =k$d8g ez  
else if(i2>r) Q%eBm_r;  
data[cur]=temp[i1++]; pRU6jV 6e)  
else if(temp[i1] data[cur]=temp[i1++]; 8W$="s2  
else h[Iu_#HMa  
data[cur]=temp[i2++]; 3LXpe8$lJ  
} N"T8 Pt  
} Q?"[zX1  
O]Kb~jkd  
} }TF<C !]  
6U&Uyd)  
改进后的归并排序: 25ayYO%PTc  
cw5YjQ8 9  
package org.rut.util.algorithm.support; jSG jv>  
3P6'*pZ  
import org.rut.util.algorithm.SortUtil; x.^vWka(  
3?O| X+$p  
/** :?UIyN?  
* @author treeroot zHdp'J"  
* @since 2006-2-2 }oN(nPxv9  
* @version 1.0 T^nX+;:|  
*/ I2W2B3D` c  
public class ImprovedMergeSort implements SortUtil.Sort { ;9I#>u  
v PGuEfz  
private static final int THRESHOLD = 10; K[kmfXKu  
OeAPBhTmFj  
/* z9+94<J  
* (non-Javadoc) D/:)rj14b  
* I L\mFjZ'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i&HV8&KygN  
*/ WuNu}Ibl}m  
public void sort(int[] data) { Dw #&x/G  
int[] temp=new int[data.length]; e{} o:r  
mergeSort(data,temp,0,data.length-1); _bd#C   
} PR'FSTg  
(mD]}{>  
private void mergeSort(int[] data, int[] temp, int l, int r) { SW; b E  
int i, j, k; ]rNfr-  
int mid = (l + r) / 2; &*y ve}su  
if (l == r) }fCM_w  
return; K%gFD?{^q  
if ((mid - l) >= THRESHOLD) )m'_>-`^:  
mergeSort(data, temp, l, mid); P\AH9#XL  
else UF%5/SiVX  
insertSort(data, l, mid - l + 1); ..T (9]h  
if ((r - mid) > THRESHOLD) |X.z|wKT6  
mergeSort(data, temp, mid + 1, r); q#a21~S<  
else ,9pi9\S  
insertSort(data, mid + 1, r - mid); v8@dvT<  
@i68%6H`?  
for (i = l; i <= mid; i++) { YiJu48J  
temp = data; Q&#:M>!|  
} Yq Fzbm{\  
for (j = 1; j <= r - mid; j++) { d5=xOEv; :  
temp[r - j + 1] = data[j + mid]; 6wd]X-G++  
} - Q@d  
int a = temp[l]; :$tW9*\KY  
int b = temp[r]; "n e'iJf_(  
for (i = l, j = r, k = l; k <= r; k++) { G 6, 8Xwk  
if (a < b) { q kKABow  
data[k] = temp[i++]; \l2 s^7G_  
a = temp; oTfbx+i/G  
} else {  KC(Ug4  
data[k] = temp[j--]; ^~aSrREo  
b = temp[j]; |pgkl`  
} j<KC$[Kt  
} I;v`o{  
} OZ" <V^"`  
Imw x~eo  
/** OKqpc;y:D  
* @param data 0?7uqS#L  
* @param l Vj]kJ,j\y  
* @param i X^W> "q  
*/ 5oKc=iX_3  
private void insertSort(int[] data, int start, int len) { II8nz[s  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9y4rw]4zI  
} (=/F=,w   
} v wyDY%B"n  
} H_j<%VW  
} _+N^yw,r*  
Pc7: hu  
堆排序: p~.@8r(  
1IV 0a  
package org.rut.util.algorithm.support; f UIs(}US  
KR}0(,Y  
import org.rut.util.algorithm.SortUtil; 'O`3FI  
$Y`aS^IW  
/** U. aa iX7  
* @author treeroot *X\c $ =*  
* @since 2006-2-2 W.|6$hRl)  
* @version 1.0 LasH[:QQQ  
*/ r$F]e]Ic\  
public class HeapSort implements SortUtil.Sort{ ;SW-dfo2i  
pt R  
/* (non-Javadoc) ;Kf|a}m-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %RN-J*s]  
*/ ay_D.gxz  
public void sort(int[] data) { #H[ 4?4r  
MaxHeap h=new MaxHeap(); _PM<25Y,@  
h.init(data); p4'"Wk8  
for(int i=0;i h.remove(); $<cZ<g5)  
System.arraycopy(h.queue,1,data,0,data.length); Fsf22  
} pPZ/O 6  
j0~3[dyqU  
private static class MaxHeap{ kYB <FwwB  
vb- .^l  
void init(int[] data){ ?I'-C?(t@1  
this.queue=new int[data.length+1]; v-3zav  
for(int i=0;i queue[++size]=data; Hl;p>>n  
fixUp(size); J,O@T)S@  
} j/<y  
}  J31M:<  
tA-B3 ]  
private int size=0; #Qr4Ke$g[l  
JP4Moq~r   
private int[] queue; XijLS7Aw|  
f~FehN7  
public int get() { U!/nD~A  
return queue[1]; b8.%?_?  
} #mhD; .Wg  
Qs9U&*L  
public void remove() { rk/ c  
SortUtil.swap(queue,1,size--); _vdxxhJ=P3  
fixDown(1); xacLlX+  
} o# xg:m_py  
file://fixdown ?@?a}  
private void fixDown(int k) { r^t{Ii ~  
int j; &a_kJ)J  
while ((j = k << 1) <= size) { m@.{zW7bO  
if (j < size %26amp;%26amp; queue[j] j++; @$P!#z  
if (queue[k]>queue[j]) file://不用交换 $Je"z]cy-  
break; 4nH91Z9=  
SortUtil.swap(queue,j,k); *Qx|5L!_  
k = j; 9ET+k(wI@  
} 8 tygs  
} mRH]'d lD7  
private void fixUp(int k) { y8vH?^:%<  
while (k > 1) { ph?0I: eU  
int j = k >> 1; 5\0.[W{^  
if (queue[j]>queue[k]) _IV@^v  
break; ,/6:bc:W  
SortUtil.swap(queue,j,k); (?BgT i\  
k = j; p@Y$eZ:O  
} &}0wzcMg  
} 1?RCJ]e5  
AC:s4iacC  
} 'UVv(-  
PdH`_/6  
} =)- Q?1q  
$Oe58  
SortUtil: :{s%=\k {d  
g#b u_E61B  
package org.rut.util.algorithm; X$ B]P 7G7  
$SzCVWS  
import org.rut.util.algorithm.support.BubbleSort; A>t!/_"  
import org.rut.util.algorithm.support.HeapSort; 9G&l qfX:  
import org.rut.util.algorithm.support.ImprovedMergeSort; y3nm!tjyM  
import org.rut.util.algorithm.support.ImprovedQuickSort; C^ " Hj  
import org.rut.util.algorithm.support.InsertSort; O)xEF~DaD  
import org.rut.util.algorithm.support.MergeSort; |SP.S 0.y  
import org.rut.util.algorithm.support.QuickSort; tnF9Vj[#%_  
import org.rut.util.algorithm.support.SelectionSort; mvA xx`jc  
import org.rut.util.algorithm.support.ShellSort; *:T>~ilF  
s`iNbW="  
/** <W51oO  
* @author treeroot c =N]! ,MO  
* @since 2006-2-2 bEQtVe@`  
* @version 1.0 @=0r3  
*/ V2s}<uG  
public class SortUtil { {9Mdt`WL  
public final static int INSERT = 1; "h^#<bPN  
public final static int BUBBLE = 2; dA)4(0o8fD  
public final static int SELECTION = 3; rrY{Jf9>  
public final static int SHELL = 4; H'0*CiHes  
public final static int QUICK = 5; Kt 90mA  
public final static int IMPROVED_QUICK = 6; K-EI?6`xM  
public final static int MERGE = 7; @yn^6cE  
public final static int IMPROVED_MERGE = 8; 4 ?@uF[  
public final static int HEAP = 9; aT1CpY=T|.  
5Vqmv<F;$Z  
public static void sort(int[] data) { *[xNp[4EU  
sort(data, IMPROVED_QUICK); ;WS7.  
} QR5,_wJ&  
private static String[] name={ (: TGev  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" UiK+c30FU  
}; *lerPY3 q  
]PzTl {]  
private static Sort[] impl=new Sort[]{ r$r&4d Y  
new InsertSort(), k~jKJb-_  
new BubbleSort(), 8q~FUJhU  
new SelectionSort(), {{]=zt|69  
new ShellSort(), /y](mu"!  
new QuickSort(), 6PJJ?}P^1  
new ImprovedQuickSort(), ?St=7a(D  
new MergeSort(), 5{ 4"JO3  
new ImprovedMergeSort(), $uUb$8 Bu  
new HeapSort() moVa'1ul  
}; g;-+7ViIr  
G{f`K^  
public static String toString(int algorithm){ g2aT`=&Z  
return name[algorithm-1]; n.a=K2H:V  
} l<aqiZSY  
,dZ H$  
public static void sort(int[] data, int algorithm) { (]}x[F9l  
impl[algorithm-1].sort(data); cPx ~|,)l  
} XY!{g(  
_ 7BF+*T  
public static interface Sort { nG},v%  
public void sort(int[] data); :n+y/6 *  
} B15O,sL&W  
@7Rt4}g  
public static void swap(int[] data, int i, int j) { vz yNc'  
int temp = data; urT/+deR  
data = data[j]; (pE\nuA\  
data[j] = temp; 7TV>6i+7  
} v#:+n+y\z  
} w%8ooQ|C  
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