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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。 k5-mK{RZ  
插入排序: RAE|eTnna  
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package org.rut.util.algorithm.support; 2L<TqC{,-  
BpP\C!:^  
import org.rut.util.algorithm.SortUtil; <Mc:Cg8>  
/** s* 9tWSd  
* @author treeroot LO"HwN43h  
* @since 2006-2-2 y6*i/3  
* @version 1.0 ^J% w[FE  
*/ |P?8<8p  
public class InsertSort implements SortUtil.Sort{ r.ajw&J2  
U}A+jJ  
/* (non-Javadoc) UjKHGsDi4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  7/7A  
*/ b}"/K$`Fd  
public void sort(int[] data) { McsqMI6  
int temp; qE,%$0g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G|O"Kv6  
} %\b5)p  
} q }z,C{Wq<  
} C)C;U&Qd  
Olxb`x  
} j|aT`UH03  
M.OWw#?p:_  
冒泡排序: {iQ<`,)Y  
&tRnI$D  
package org.rut.util.algorithm.support; ;? :,L  
+V'r >C:  
import org.rut.util.algorithm.SortUtil; +^69>L2V  
5Rec}H  
/** |x5 w;=  
* @author treeroot rz7yAm  
* @since 2006-2-2 O_iX 1@SW  
* @version 1.0 gdG: &{|x  
*/ t#pY2!/T3  
public class BubbleSort implements SortUtil.Sort{ NX=dx&i>+  
e@,L~ \  
/* (non-Javadoc) VR:b1XWX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mmjB1 L  
*/ (u'/tNGS  
public void sort(int[] data) { }bnkTC  
int temp; &0C!P=-p  
for(int i=0;i for(int j=data.length-1;j>i;j--){ `GDYL7pM(  
if(data[j] SortUtil.swap(data,j,j-1); un9o~3SF<  
} !<X_XA  
} sN?:9J8  
} x< 3vA|o  
} AMm O+E?  
^X;>?_Bk  
} <%Rr-,  
+_}2zc4  
选择排序: B+B v(p  
-"nYCF  
package org.rut.util.algorithm.support; 9(PFd%  
%4-pw|':  
import org.rut.util.algorithm.SortUtil; U92hv~\  
0,3 ':Df  
/** - 'VT  
* @author treeroot T6,lk1S'=  
* @since 2006-2-2 )I$Mh@F  
* @version 1.0 J~Ph)|AiS  
*/ o{Ep/O`  
public class SelectionSort implements SortUtil.Sort { 7>mYD3  
Z)&HqqT3p  
/* ^R$dG[Qf  
* (non-Javadoc) enr mjA&3  
* mT9\%5d3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X5yhS  
*/ 0`thND)?O  
public void sort(int[] data) { VA%i_P,  
int temp; N}h%8\  
for (int i = 0; i < data.length; i++) { "|%fA E  
int lowIndex = i; +=8Po'E^!d  
for (int j = data.length - 1; j > i; j--) { _t[%@G>P  
if (data[j] < data[lowIndex]) { `->k7a0<b1  
lowIndex = j; a RwBxf  
} .WPqK >79|  
} O:x%!-w  
SortUtil.swap(data,i,lowIndex); j%h Y0   
} =+L>^w#6=  
} $ g^;*>yr  
gA|j\T{c  
} /W>"G1)  
K!~ ](_W!  
Shell排序: 1mV0AE538  
Y|~>(  
package org.rut.util.algorithm.support; c2f$:XiM  
zK92:+^C   
import org.rut.util.algorithm.SortUtil; NeEV !V8  
J)-> 7h =  
/** *~L]n4-  
* @author treeroot `QF|> N  
* @since 2006-2-2 7EXmmB~>,  
* @version 1.0 u5_fM*Ka  
*/ ATHz~a  
public class ShellSort implements SortUtil.Sort{ m t^1[  
ZIl<y{  
/* (non-Javadoc) 8gxLL59  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IA4(^-9  
*/ 4\3t5n  
public void sort(int[] data) { A&'%ou  
for(int i=data.length/2;i>2;i/=2){ 8IH gsW";  
for(int j=0;j insertSort(data,j,i); }+J@;:  
} UXJl;M b  
} t_dg$KB  
insertSort(data,0,1); tK H!xit  
} do,X{\  
1aG}-:$t'  
/** LNE[c  
* @param data K=)R!e8  
* @param j U*TN/6Qy.  
* @param i buXG32;  
*/ >xKRU5  
private void insertSort(int[] data, int start, int inc) { "tARJW  
int temp; eV0S:mit  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); bYc qscW  
} ;gnr\C*G  
} oUSG`g^P(M  
} lz 6 Aj  
A~V\r<N j  
} Ke'2"VkQt  
]Dg0@Y  
快速排序: #O+]ydvT  
zOdKB2_J7  
package org.rut.util.algorithm.support; )M 0O=Cl1  
uyj*v]AE'  
import org.rut.util.algorithm.SortUtil; eHe /w9`$R  
BkfBFUDQ  
/** eb\`)MI/  
* @author treeroot '=.Uz3D'0  
* @since 2006-2-2 \[EWxu  
* @version 1.0 auW]rwY  
*/ P0z{R[KBH  
public class QuickSort implements SortUtil.Sort{ f:5/y^M&  
5qEdN  
/* (non-Javadoc) 9m4rNvb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wp3l>:  
*/ / nFw  
public void sort(int[] data) { %ko 8P  
quickSort(data,0,data.length-1); Uc0'XPo3I  
} qEr[fC@x  
private void quickSort(int[] data,int i,int j){ EIQy?ig86  
int pivotIndex=(i+j)/2; dRa<,@1"  
file://swap oJT@'{;*z  
SortUtil.swap(data,pivotIndex,j); 2kq@*}ys  
Xy<f_  
int k=partition(data,i-1,j,data[j]); nk 9 K\I  
SortUtil.swap(data,k,j); (Nb1R"J `  
if((k-i)>1) quickSort(data,i,k-1); ~|C1$.-  
if((j-k)>1) quickSort(data,k+1,j); pw yl,A  
\#,#_  
} }{oBKm9_p  
/** 6CRPdLTDf  
* @param data 7=A9E]:  
* @param i 2(/ /slP  
* @param j Bqlc+d:  
* @return 5yi q#  
*/ Sr 4 7u{n  
private int partition(int[] data, int l, int r,int pivot) { _ D}b  
do{ G%R`)Z]8&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Jjh!/pWZ4  
SortUtil.swap(data,l,r); mm<iT59  
} <# r.}T.l  
while(l SortUtil.swap(data,l,r); f+Li'?  
return l; ^>{;9 lo<  
} `f+g A  
B^~Bv!tHWr  
} Ytwv=;h-  
,nRwwFd.  
改进后的快速排序: %P,^}h7  
igj@{FN  
package org.rut.util.algorithm.support; [<a%\:c m4  
aEdJri  
import org.rut.util.algorithm.SortUtil; G$9|aaf`1#  
'N ::MN  
/** S{7ik,Gdg  
* @author treeroot Pt0}9Q  
* @since 2006-2-2 W(lKR_pF  
* @version 1.0 .x?zky^  
*/ Ny7=-]N4{"  
public class ImprovedQuickSort implements SortUtil.Sort { Yf)|ws?!  
{59VS Nl  
private static int MAX_STACK_SIZE=4096; T4Gw\Z%  
private static int THRESHOLD=10; Mqf}Aiqk;  
/* (non-Javadoc) V^/^OR4k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0+y~RTAVB  
*/ 4?M3#],'h  
public void sort(int[] data) { B5H&DqWzr  
int[] stack=new int[MAX_STACK_SIZE]; Fd,+(i D  
`Mp7 })  
int top=-1; KXA)i5z  
int pivot; 4U;XqUY /  
int pivotIndex,l,r; FDs^S)B  
TIWLp  
stack[++top]=0; "M0l;  
stack[++top]=data.length-1; *([)X2A@+  
[d~bZS|(T(  
while(top>0){  53*, f  
int j=stack[top--]; @&xaaqQ-  
int i=stack[top--]; S@zkoj@  
)'dH}3Ba  
pivotIndex=(i+j)/2; [67E5rk-  
pivot=data[pivotIndex]; nC.2./OwMf  
|-Esc|J(  
SortUtil.swap(data,pivotIndex,j); 1 u_2 4  
Dzjt|U0ru9  
file://partition Sc$8tLDLj  
l=i-1; [xp,&  
r=j; n.XhK_6n]M  
do{ <eFAI}=s  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); zM r!WoW  
SortUtil.swap(data,l,r); `CEj 4  
} rbuL@= S@*  
while(l SortUtil.swap(data,l,r); >aC\_Mc  
SortUtil.swap(data,l,j); X8SRQO^  
$#ju?B~  
if((l-i)>THRESHOLD){ $EGRaps{j>  
stack[++top]=i; S O:V|Tfj  
stack[++top]=l-1; eQax ZMU  
} * :tjxC  
if((j-l)>THRESHOLD){ j5h 6u,^:  
stack[++top]=l+1; o),6o'w(  
stack[++top]=j; m_Ac/ct f  
} 27 145  
-0VA!3l  
} 5H :~6z  
file://new InsertSort().sort(data); G!VF*yW8  
insertSort(data); PSf5p\<5  
} DMcxa.Sd!  
/** t-7U1B}=<C  
* @param data d:<H?~  
*/ 'tu@`7*  
private void insertSort(int[] data) { jy(+ 0F  
int temp; ^g-t#O lD?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;y~{+{{Ow  
} vG<pc_ak  
} UUMdZ+7  
} X:``{!~geo  
oS#'u 1k  
} oAZF3h]po  
r2GK_$vd  
归并排序: :IR9=nhS]  
6(J4IzZ  
package org.rut.util.algorithm.support; 4`U0">gY  
./&zO{|0]  
import org.rut.util.algorithm.SortUtil; ,c%K)KuPK.  
M9s43XL(&  
/** w*u{;v#  
* @author treeroot ;w6fM  
* @since 2006-2-2 f7Df %&d  
* @version 1.0 7{An@hNh  
*/ hP1 l v7P  
public class MergeSort implements SortUtil.Sort{ w&|R5Q  
(\T0n[  
/* (non-Javadoc) ^K.u ~p   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 46K&$6eN  
*/ `e $n$Bh  
public void sort(int[] data) { ^6a S]t  
int[] temp=new int[data.length]; R{) Q1~H=q  
mergeSort(data,temp,0,data.length-1); Z<ajET`)  
} F?8BS*r_  
/$9BPjO{  
private void mergeSort(int[] data,int[] temp,int l,int r){ fzS`dL5,W  
int mid=(l+r)/2; %h"qMs S  
if(l==r) return ; :GQIlA8cF$  
mergeSort(data,temp,l,mid); hr[B^?6  
mergeSort(data,temp,mid+1,r); !0ce kSesr  
for(int i=l;i<=r;i++){ ?AnjD8i  
temp=data; i>Fvmw  
} v0Ai!#  
int i1=l; ^IVe[P'  
int i2=mid+1; JYwyR++uo  
for(int cur=l;cur<=r;cur++){ kYxl1n v  
if(i1==mid+1) @GG(7r\/B  
data[cur]=temp[i2++]; os1?6 z~  
else if(i2>r) zUs~V`0  
data[cur]=temp[i1++]; !.3R~0b  
else if(temp[i1] data[cur]=temp[i1++]; l801` ~*gO  
else nw0L1TP/J  
data[cur]=temp[i2++]; U~*c#U"bh  
} ]^:hyO K  
} ,{?q^"  
kG)2%  
} T~%H%O(F  
WHUT/:?f  
改进后的归并排序: J;UBnCg  
L`UG=7r q  
package org.rut.util.algorithm.support; X*sr  
{)V?R  
import org.rut.util.algorithm.SortUtil; 2yln7[a  
K8 b+   
/** OE'K5oIM  
* @author treeroot )?w&oIj5  
* @since 2006-2-2 I?a8h`WS+  
* @version 1.0 -B1YZ/.rz"  
*/ U_}7d"<| ?  
public class ImprovedMergeSort implements SortUtil.Sort { ?fK^&6pI  
)Fqy%uR8  
private static final int THRESHOLD = 10; e,f ;  
5-D`<\  
/* |l|_dn  
* (non-Javadoc) =- $!:W~  
* Z-)[1+Hs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ! FNf>z+  
*/ gbm0H-A:*  
public void sort(int[] data) { |9>*$Fe"  
int[] temp=new int[data.length]; V: ^JC>6  
mergeSort(data,temp,0,data.length-1); j$@?62)6  
} 6*ZU}xT  
[6D>f?z  
private void mergeSort(int[] data, int[] temp, int l, int r) { U~aWG\h#X  
int i, j, k; S|"Fgoj r  
int mid = (l + r) / 2; AG]W O8f)  
if (l == r) XQ]`&w(  
return; [2Iau1<@  
if ((mid - l) >= THRESHOLD) C"w,('~@kW  
mergeSort(data, temp, l, mid); 6Wj@r!u  
else AD^X(rW  
insertSort(data, l, mid - l + 1); I-xwJi9?,  
if ((r - mid) > THRESHOLD) ||uZ bP@  
mergeSort(data, temp, mid + 1, r); d,W/M(S  
else jFtg.SD  
insertSort(data, mid + 1, r - mid); hwiKOP  
%drJ p6n%  
for (i = l; i <= mid; i++) { jOs H2^  
temp = data; U.: sK*  
} Bn\l'T  
for (j = 1; j <= r - mid; j++) { $^t<9" t  
temp[r - j + 1] = data[j + mid]; 8QV t, 'I  
} )8;{nqoC  
int a = temp[l]; p ZtgIS(3  
int b = temp[r]; <}d/v_+pnh  
for (i = l, j = r, k = l; k <= r; k++) { EYG"49 c  
if (a < b) { /I`3dWL  
data[k] = temp[i++]; Vu}806kB  
a = temp; OR]T`meO  
} else { A8J8u,u9  
data[k] = temp[j--]; UxyY<H~Wx  
b = temp[j]; [FGgkd}  
} qNpu}\L  
} h1# S+k  
} !Cw!+fZ\l  
L[rpb.'FG  
/** 8Jr1_a  
* @param data r*chL&7  
* @param l R2l[Q){!  
* @param i "%VbI P  
*/ /|?F)%v\  
private void insertSort(int[] data, int start, int len) { 6 *Zj]is  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); q/$ GE,"  
} d/S+(<g  
} tw=K&/@^O  
} 22>;vM."  
} 8W;2oQN7  
>V(zJ  
堆排序: L1wZU,o  
2JVxzj<~`  
package org.rut.util.algorithm.support; bp#fyG"  
-ui< E?v  
import org.rut.util.algorithm.SortUtil; lV\lj@  
g5y;?fqJ  
/** M ?*Tf&  
* @author treeroot {b1UX9y  
* @since 2006-2-2 ~Q?!W0ZBE  
* @version 1.0 FPF6H puV  
*/ 4}i*cB `  
public class HeapSort implements SortUtil.Sort{ Y9u;H^^G  
Ea4_Qmn  
/* (non-Javadoc) cx{T '1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :6Pnie  
*/ JS!*2*Wr  
public void sort(int[] data) { !2$ z *C2;  
MaxHeap h=new MaxHeap(); $o.Kn9\  
h.init(data); /THnfy \  
for(int i=0;i h.remove(); 9${Xer'  
System.arraycopy(h.queue,1,data,0,data.length); z1vw'VT>  
} *_1[[~Aw  
03([@d6<E  
private static class MaxHeap{ DI,K(_@G  
A2NF<ZsD  
void init(int[] data){ -f?Ah  
this.queue=new int[data.length+1]; UQI f}iR  
for(int i=0;i queue[++size]=data; ^ S  
fixUp(size); \5TxE  
} %v{1# ~u  
} 44HiTWQS?l  
K"\MU  
private int size=0; |CIC$2u  
,gMy@  
private int[] queue; xx }GOY.J  
ybQP E/9  
public int get() { f8'MP9Lv  
return queue[1]; ]\Xc9N8w  
} `ZMK9f:  
9JnY$e<&  
public void remove() { ]Bnwk o  
SortUtil.swap(queue,1,size--); yfEb  
fixDown(1); 3F+Jdr'  
} Tfx :"u  
file://fixdown .<#ATFmY  
private void fixDown(int k) { j1q[c,  
int j; `#Kx|x6  
while ((j = k << 1) <= size) { inAAgW#s}  
if (j < size %26amp;%26amp; queue[j] j++; c #lPc>0xb  
if (queue[k]>queue[j]) file://不用交换 T5|c$doQ  
break; oY=1C}  
SortUtil.swap(queue,j,k); }gGkV]  
k = j; e;VIL 2|  
} r?A|d.Tl  
} C5@V/vA  
private void fixUp(int k) { `uo, __y  
while (k > 1) { i ev>9j  
int j = k >> 1; tmJgm5v  
if (queue[j]>queue[k]) T6M+|"92  
break; {G3i0 r  
SortUtil.swap(queue,j,k); @hif$  
k = j; V&ot3- Rf  
} iiG f'@/  
} yz\c5  
.Cz %:%9  
} + G;LX'B  
;%!B[+ut"  
} Y<f_`h^r  
qAY%nA>jO  
SortUtil: 2c(aO[%h9  
G7@ O`N8'  
package org.rut.util.algorithm; h}L}[   
P"3*lk+w  
import org.rut.util.algorithm.support.BubbleSort; "D][e'  
import org.rut.util.algorithm.support.HeapSort; /6+NU^  
import org.rut.util.algorithm.support.ImprovedMergeSort; iv&v8;B  
import org.rut.util.algorithm.support.ImprovedQuickSort; DmqSQA  
import org.rut.util.algorithm.support.InsertSort; hs+kr?Pg`  
import org.rut.util.algorithm.support.MergeSort; RJ4. kt  
import org.rut.util.algorithm.support.QuickSort; ?okx<'"[  
import org.rut.util.algorithm.support.SelectionSort; 4 !#a3=_  
import org.rut.util.algorithm.support.ShellSort; 'ZP)cI:+X  
',I0ih#Ls  
/** ~1kXUWq3  
* @author treeroot 3c3OG.H$8  
* @since 2006-2-2 xV\5<7qk5g  
* @version 1.0 # 1.YKo  
*/ 7KjUW\mN2Z  
public class SortUtil { !>z:m!MlQ  
public final static int INSERT = 1; 'CR)`G_'[  
public final static int BUBBLE = 2; j&R+2%  
public final static int SELECTION = 3; hk>;pU(  
public final static int SHELL = 4; )|bC^{kH!l  
public final static int QUICK = 5; XORk!m|  
public final static int IMPROVED_QUICK = 6; fJAnKUF)  
public final static int MERGE = 7; :dI\z]Y(  
public final static int IMPROVED_MERGE = 8; sEc;!L  
public final static int HEAP = 9; YDC&u8  
eH%RNtP`  
public static void sort(int[] data) { <Fz~7WVd  
sort(data, IMPROVED_QUICK); PVOx`<ng  
} wzCUZ1N9q  
private static String[] name={ h"+ `13  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xiblPF_n3  
}; eqAW+Ptx  
m Lk(y*  
private static Sort[] impl=new Sort[]{ BB$oq'  
new InsertSort(), MrRaU x6z  
new BubbleSort(), .;7> y7$*  
new SelectionSort(), M~Ttb29{  
new ShellSort(), a2 +~;{?g  
new QuickSort(), O1&b]C#  
new ImprovedQuickSort(), [K/m  
new MergeSort(), lj=l4 &.i  
new ImprovedMergeSort(), ZraT3  
new HeapSort() hr05L<?H  
}; GB7/x*u   
N_pUv   
public static String toString(int algorithm){ [U@; \V$  
return name[algorithm-1]; \55VqGyxu9  
} ?:{sH#ua  
"es?=  
public static void sort(int[] data, int algorithm) { cvd\/pG)  
impl[algorithm-1].sort(data); 2i{cQ96  
} G q<X4C#|  
M=qb^~ l  
public static interface Sort { VZ& A%UFC  
public void sort(int[] data); u+H ; @  
} wI B`%V  
q$(5Vd:  
public static void swap(int[] data, int i, int j) { C'yppl%  
int temp = data; 5q9s,r_  
data = data[j]; NEt1[2X%  
data[j] = temp; ) rW&c- '  
} YKmsQ(q`N  
} 7{@l%jx][  
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