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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。 8&UwnEk<  
插入排序: Y@Ti2bI`v  
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package org.rut.util.algorithm.support; (5Sv$Xt  
(v1~p3H  
import org.rut.util.algorithm.SortUtil; [?nM)4d  
/** ~<q^4w.=7C  
* @author treeroot CyD)=e {  
* @since 2006-2-2 S F&EVRv  
* @version 1.0 l|5;&(Y+s  
*/ % n~ 'UA  
public class InsertSort implements SortUtil.Sort{ A7=k 9|  
Jj,fdP#\  
/* (non-Javadoc) |7%#z~rT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !7jVKI80  
*/ K5EU?J&  
public void sort(int[] data) { )jHH-=JM  
int temp; m$}Jw<.W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1 JB~G7  
} hLF;MH@  
} )T!3du:M  
} g<PglRr"  
]Ofs, U^  
} eGj[%pk  
G'f5MP 1  
冒泡排序: BSHtoD@e7  
p@iU9K\,  
package org.rut.util.algorithm.support; RG y+W-  
OO*2>Qy~z  
import org.rut.util.algorithm.SortUtil; ;T*o RS  
@t4OpU<'*b  
/** .vWwYG  
* @author treeroot Q$8&V}jVW  
* @since 2006-2-2 OS sYmF  
* @version 1.0 dBEm7.nh  
*/ aDZ]{;  
public class BubbleSort implements SortUtil.Sort{ {W$K@vuV;?  
,f^ ICM  
/* (non-Javadoc) @~8*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B<oBo&uA  
*/ lL"ANlX-P  
public void sort(int[] data) { |VQmB/a  
int temp; |ZtNCB5{^j  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^/fasl$#  
if(data[j] SortUtil.swap(data,j,j-1); %3@-. =  
} Aqo90(jffx  
} ][`%vj9r  
} 'T(@5%Db  
} 3{9d5p|\i  
:s>x~t8g#n  
} D-4{9[  
ppzQh1  
选择排序: qB5.of[N!  
aM YtWj  
package org.rut.util.algorithm.support; MIdViS.g  
C1o^$Q|j  
import org.rut.util.algorithm.SortUtil; #Fz/}lO  
aKz:hG  
/** "NtY[sT{V  
* @author treeroot bW^C30m  
* @since 2006-2-2 p} {H%L  
* @version 1.0 XeX` h_  
*/ _ o.j({S  
public class SelectionSort implements SortUtil.Sort { .?kq\.rQ  
.I.B,wH8  
/* nM|F MK^  
* (non-Javadoc) "{[\VsX|c  
* Z}S7%m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L}6!D zl  
*/ (D0\uld9  
public void sort(int[] data) { 5i+cjT2  
int temp; n j2=}6  
for (int i = 0; i < data.length; i++) { `T{'ufI4B  
int lowIndex = i; oI-,6G}  
for (int j = data.length - 1; j > i; j--) { V.Tn1i-v  
if (data[j] < data[lowIndex]) { VS@e[,  
lowIndex = j; .F G%QFF~  
} u9fJ:a  
} nF$HWp&gt  
SortUtil.swap(data,i,lowIndex); FG^lh  
} 'qJ0338d#U  
} O L 9(~p  
r1:CHIwK  
} 3S" /l  
9BAvE\o0  
Shell排序: N&^zXY  
;8a9S0eS  
package org.rut.util.algorithm.support; GSW%~9WBa  
nc6PSj X  
import org.rut.util.algorithm.SortUtil; U7Oa 13Qz  
DL uaM?7  
/** 4w)>}  
* @author treeroot 5XV|*O;  
* @since 2006-2-2 3 &mpn,  
* @version 1.0 t YxN^VqU  
*/ nW}jTBu_K+  
public class ShellSort implements SortUtil.Sort{ &gKDw!al  
a~ dgf:e`  
/* (non-Javadoc) tQas_K5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HQ]mDo  
*/ |<'6rJ[i>  
public void sort(int[] data) { B oxtP<C"  
for(int i=data.length/2;i>2;i/=2){ ea]qX6)UZ  
for(int j=0;j insertSort(data,j,i); k||dX(gl  
} *jvP4Nz)k  
} "blq)qo)  
insertSort(data,0,1); `!$6F:d_l  
} ;dPaWS1D  
lX.-qCV"B  
/** *ow`}Q  
* @param data =fJU+N+<  
* @param j *@p"  
* @param i ~(8fUob  
*/ HNCu:$Wr@  
private void insertSort(int[] data, int start, int inc) { T*%rhnTv0  
int temp; mPHto-=fB  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); FSm.o?>  
} K_~kL0=4  
} k1oJ<$ Q  
} l i)6^f#  
1Iy1xiP  
} IT{c:jo1{`  
[N Afy~X*  
快速排序: ]A5Y/dd  
v bn=ywz  
package org.rut.util.algorithm.support; n}_}#(a  
tH4 q*\U  
import org.rut.util.algorithm.SortUtil; DxwR&S{  
n~]"sTC}&  
/** Km $o@  
* @author treeroot 1Y*k"[?dW  
* @since 2006-2-2 jU~ x^Y  
* @version 1.0 )obgEJ7Y`l  
*/ fLqjBG]<  
public class QuickSort implements SortUtil.Sort{ }8" |q3k  
yvj/u c  
/* (non-Javadoc) Y!_{:2H8p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8toOdh  
*/ z=) m6\  
public void sort(int[] data) { /'aqQ K<  
quickSort(data,0,data.length-1); -fk;Qq3O  
} n@xQ-v  
private void quickSort(int[] data,int i,int j){ 9?MzIt  
int pivotIndex=(i+j)/2; NXFi*  
file://swap DqT<bNR1*;  
SortUtil.swap(data,pivotIndex,j); ~abyjM  
'(FC  
int k=partition(data,i-1,j,data[j]); bsDA&~)s  
SortUtil.swap(data,k,j); in/~' u  
if((k-i)>1) quickSort(data,i,k-1); oe]* Q  
if((j-k)>1) quickSort(data,k+1,j); 3a.!9R>  
c0'ryS_Z9  
} Gmi? xGn  
/** uR :EH.K  
* @param data Rlk3AWl2u  
* @param i sE[`x^1'8  
* @param j |}4\Gm  
* @return M^Sa{S*?  
*/ O t)}:oG  
private int partition(int[] data, int l, int r,int pivot) { i O$87!  
do{ 9f! M1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N9!L8BBaK  
SortUtil.swap(data,l,r); tDRR3=9pX  
} zGtJ@HbB  
while(l SortUtil.swap(data,l,r); NT+.E[J6  
return l; t5+p]7  
} 01'>[h#_n  
`6~0W5  
} ~q3O,bb{   
9O 'j+?(`@  
改进后的快速排序: ,m{R m0  
e#*3X4<\K  
package org.rut.util.algorithm.support; hWy@?r.  
7 FE36Ub9  
import org.rut.util.algorithm.SortUtil; +VkL?J  
N0p6xg~  
/** $U_(e:m}f  
* @author treeroot b=5w>*  
* @since 2006-2-2 UQu6JkbLL  
* @version 1.0 TLsF c^X  
*/ /0/ouA>+  
public class ImprovedQuickSort implements SortUtil.Sort { vclc%ws  
t$$YiO  
private static int MAX_STACK_SIZE=4096; j,i9,oF6]  
private static int THRESHOLD=10; k ;^$Pd?t  
/* (non-Javadoc) #NFB=o JI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M 2hZ'  
*/ )h,y Q`.  
public void sort(int[] data) { 0OM^,5%8  
int[] stack=new int[MAX_STACK_SIZE]; -zFJ)!/?  
?z.?(xZ 6  
int top=-1; f]i"tqoI  
int pivot; 7su2A>Ix  
int pivotIndex,l,r; \x-2qlZ  
^t})T*hM0  
stack[++top]=0; q KD  
stack[++top]=data.length-1; O]tR~a  
t)&U'^  
while(top>0){ J3mLjYy  
int j=stack[top--];  g!}]FQBb  
int i=stack[top--]; 56)!&MF  
` Tap0V  
pivotIndex=(i+j)/2; vi}16V84l  
pivot=data[pivotIndex]; O z6$u  
I#2$CSJ  
SortUtil.swap(data,pivotIndex,j); 4z(~)#'^  
i3 eF_  
file://partition TX=894{nGh  
l=i-1; x eFx!$3  
r=j; j{Px}f(=  
do{ x:Q\pZ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \1Y|$:T/  
SortUtil.swap(data,l,r); NVx>^5QV  
} "<=4]Z  
while(l SortUtil.swap(data,l,r); !+eU  
SortUtil.swap(data,l,j); HTYyX(ya  
5a/A?9?,  
if((l-i)>THRESHOLD){ th73eC'  
stack[++top]=i; a(vt"MQ_  
stack[++top]=l-1; b,+Sa\j)(  
} "d)Yq Q  
if((j-l)>THRESHOLD){ %nkP" Z#  
stack[++top]=l+1; DujVV(+I  
stack[++top]=j; <q=Zg7zB  
} %/uLyCUZ  
f!kZyD7  
} 'etA1]<N  
file://new InsertSort().sort(data); x\Q}fk?{t  
insertSort(data); +UDt2  
} Gl>\p  
/** jVnTpa!A  
* @param data _5rKuL  
*/ ?7NSp2aq2A  
private void insertSort(int[] data) { :O413#8  
int temp; MJiVFfYW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4wSZ'RTSR  
} ei4LE XQ16  
} bRu 9*4t  
} 8p 4[:M@  
!M8_PC*a  
} x[lIib1s  
4vbGXb}!  
归并排序: PR"x&JG@  
}169]!R  
package org.rut.util.algorithm.support; Xb:* KeZq  
cRs.@U\{R\  
import org.rut.util.algorithm.SortUtil; +A8q.-N G  
d2eXN3"  
/** R|*0_!O:[  
* @author treeroot :oy2mi;  
* @since 2006-2-2 bJn&Y  
* @version 1.0 zI[<uvxzW`  
*/ }~W/NP_F  
public class MergeSort implements SortUtil.Sort{ ].rKfv:  
=-Hhm($n  
/* (non-Javadoc) ?<jWEz=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <B>qE a_I  
*/ Jw5@#j  
public void sort(int[] data) { WD\Yx~o  
int[] temp=new int[data.length]; e'uC:O.u  
mergeSort(data,temp,0,data.length-1); G~y:ZEnN[  
} tRI<K  
d8;kM`U  
private void mergeSort(int[] data,int[] temp,int l,int r){ 4v>SXch  
int mid=(l+r)/2;  d;>G  
if(l==r) return ; !4Zy$69R  
mergeSort(data,temp,l,mid); 445JOP  
mergeSort(data,temp,mid+1,r); :q3w;B~  
for(int i=l;i<=r;i++){ } O+xs3Uv  
temp=data; W5'6L =WG  
} |_ED*ATR=  
int i1=l; ym5@SBqIx  
int i2=mid+1; BPv+gx(>k  
for(int cur=l;cur<=r;cur++){ jY\z+lW6A  
if(i1==mid+1) W*s=No3C  
data[cur]=temp[i2++]; 517"x@6Q  
else if(i2>r) > }f!. i  
data[cur]=temp[i1++]; oUsfO-dET^  
else if(temp[i1] data[cur]=temp[i1++]; <gi~:%T  
else cvy 5|;-u  
data[cur]=temp[i2++]; z\<,}x}V  
} j]&Qai~}Y  
} ,j>FC j>  
Z[VrRT,\c  
} =Pn"nkpML  
T^] ]z}k  
改进后的归并排序: &8f/6dq  
XM5)|D  
package org.rut.util.algorithm.support; e.L&A|  
>lM/\HO2  
import org.rut.util.algorithm.SortUtil; } *) l  
@TW:6v`  
/** esZhX)dS  
* @author treeroot Zs t)S(  
* @since 2006-2-2 * G*VY#L  
* @version 1.0 }~&0<8m  
*/ hd9~Zw]V  
public class ImprovedMergeSort implements SortUtil.Sort { }R}M>^(R4  
G6{ PrV#  
private static final int THRESHOLD = 10; z-K};l9y  
GIYdI#0RC  
/* :RIqA/  
* (non-Javadoc) q]f7D\ M  
* }\H. G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "qC3%9e  
*/ mpD.x5jm<  
public void sort(int[] data) { 4J`-&05O  
int[] temp=new int[data.length]; }8l+Jd3"  
mergeSort(data,temp,0,data.length-1); + AjV0#n  
} XFs7kTY  
lMW6D0^  
private void mergeSort(int[] data, int[] temp, int l, int r) {  w<!&%  
int i, j, k; GCQOjqiR  
int mid = (l + r) / 2; M@q)\UQ'  
if (l == r) ,1|=_M31  
return; NR&a er  
if ((mid - l) >= THRESHOLD) He4q-\ht  
mergeSort(data, temp, l, mid); :T6zT3(")D  
else 8KP   
insertSort(data, l, mid - l + 1); y#Nrq9r:  
if ((r - mid) > THRESHOLD) 7 v3%dCvf  
mergeSort(data, temp, mid + 1, r); liB~vdqj  
else .'+JA:3R  
insertSort(data, mid + 1, r - mid); Z$Ps_Ik  
v(O@~8(I  
for (i = l; i <= mid; i++) { <.lN'i;(  
temp = data; 70*yx?TV  
} [KO\!u|?YS  
for (j = 1; j <= r - mid; j++) { e6jdSn  
temp[r - j + 1] = data[j + mid]; uY3$nlhP6  
} zhRF>Y`  
int a = temp[l]; [A!=Hv_$  
int b = temp[r]; 6xh -m  
for (i = l, j = r, k = l; k <= r; k++) { xU.Ymq& 5  
if (a < b) { S +73 /Vs  
data[k] = temp[i++]; }LIf]Y K  
a = temp; _cfAJ)8=  
} else { V^9%+L+E5  
data[k] = temp[j--]; L(`q3>iC4.  
b = temp[j]; g2r8J0v  
} wE <PXBl\b  
} #eI` l`}  
} }2?-kj7  
[S`Fm>,  
/** *i7-_pT  
* @param data ON_G D"  
* @param l '_=XfTF  
* @param i '(($dT  
*/ 8=sMmpB 7u  
private void insertSort(int[] data, int start, int len) { {}PBYX R  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ORV'dr  
} A56aOI=  
} oP<E)  
} $J:~jY/J  
} 9c@\-Z'  
bzMs\rj\  
堆排序: BA0.B0+"  
xF9PjnWF=  
package org.rut.util.algorithm.support; ;V~~lcD&Y`  
[SLBA_d  
import org.rut.util.algorithm.SortUtil; fm%-wUgj  
RE:$c!E!  
/** ! XNTk]!  
* @author treeroot (V~PYf%  
* @since 2006-2-2 W r;?t!  
* @version 1.0 8[z& g%u  
*/ ~dqEUu!C  
public class HeapSort implements SortUtil.Sort{ nR~L$Wu5_a  
_\xd]~ELj  
/* (non-Javadoc) Mio~CJ"?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GwVSRI:[N  
*/ 7_#i,|]58  
public void sort(int[] data) { |2~fOyA+  
MaxHeap h=new MaxHeap(); lN^} qg><  
h.init(data); #(NkbJ5ka  
for(int i=0;i h.remove(); sh"\ kk9  
System.arraycopy(h.queue,1,data,0,data.length); KuO5`  
} &ExYul  
4 p(KdYc  
private static class MaxHeap{  Dy@f21+  
3l@={Ts  
void init(int[] data){ i;>Hy|  
this.queue=new int[data.length+1]; :xT=uE.I  
for(int i=0;i queue[++size]=data; 4RqOg1  
fixUp(size); .ZrQ{~t  
} ' RjFWHAp  
} UI 7JMeV  
Y<S,Xr;J:  
private int size=0; `QlChxd  
tXTa>Q  
private int[] queue; RSY{IY  
&?<o692  
public int get() { { LJRdV  
return queue[1]; l~M86 h  
} /*lSpsBn  
xla9:*pPn  
public void remove() { 'qhA4W9  
SortUtil.swap(queue,1,size--); jn#  
fixDown(1); eRa1eR gP  
} h2Z Gh  
file://fixdown f[!Q R  
private void fixDown(int k) { xF_ Y7rw1w  
int j; '+ |{4-V  
while ((j = k << 1) <= size) { @fbB3  
if (j < size %26amp;%26amp; queue[j] j++; qf9.S)H1Z  
if (queue[k]>queue[j]) file://不用交换 *"Ipu"G5?  
break; swnov[0  
SortUtil.swap(queue,j,k); g4I&3 M  
k = j; _~DFZt@T  
} 'wX'}3_/g  
} b#.hw2?a`  
private void fixUp(int k) { .8o?`  
while (k > 1) { X,5}i5'!  
int j = k >> 1; #jrtsv]  
if (queue[j]>queue[k]) L hp  
break; o<h2]TN  
SortUtil.swap(queue,j,k); (g" {A  
k = j; 8Z&M}Llk  
} G)|Xj70  
} ;X_bDiG$  
FOPfo b[  
} vYFtw L`  
$>JfLSyC  
} 7MWd(n-  
4nsc`Hu  
SortUtil: ^fiJxU  
yj$$k~@  
package org.rut.util.algorithm; ,NO2{Ha$  
Hs:0j$  
import org.rut.util.algorithm.support.BubbleSort; !hs33@*u~  
import org.rut.util.algorithm.support.HeapSort; ^ps6\>=0cW  
import org.rut.util.algorithm.support.ImprovedMergeSort; 7vo8lnQ{  
import org.rut.util.algorithm.support.ImprovedQuickSort; eOoqH$ i  
import org.rut.util.algorithm.support.InsertSort; g6 H}a  
import org.rut.util.algorithm.support.MergeSort; 6i+<0b}!/  
import org.rut.util.algorithm.support.QuickSort; F50l->F2&  
import org.rut.util.algorithm.support.SelectionSort; mEm=SpO[$o  
import org.rut.util.algorithm.support.ShellSort; LR "=(  
A"e4w?  
/** YdZ9##IU3  
* @author treeroot jn 5v  
* @since 2006-2-2 t$Bu<frQ  
* @version 1.0 eMV{rFmT  
*/ >'lvZt  
public class SortUtil { wBWqibY|  
public final static int INSERT = 1; YQ$LU \:  
public final static int BUBBLE = 2; kwXUjn p  
public final static int SELECTION = 3; i]#"@xQ  
public final static int SHELL = 4; 'fs tfk  
public final static int QUICK = 5; =F2`X#x_j  
public final static int IMPROVED_QUICK = 6; `;=-71Gn~  
public final static int MERGE = 7; 86pA+c+U  
public final static int IMPROVED_MERGE = 8; d5>EvK U  
public final static int HEAP = 9; }S$OE))u  
7K HQ0  
public static void sort(int[] data) { ?y]R /?  
sort(data, IMPROVED_QUICK); ~?4 BP%g-y  
} gyQPQ;"H$2  
private static String[] name={ U(PW$\l  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (rc 7Cp3  
}; A^E 6)A=  
0h~{K  
private static Sort[] impl=new Sort[]{ +1a3^A\  
new InsertSort(), ]h#QA;   
new BubbleSort(), bU/4KZ'-^  
new SelectionSort(), >=d 5Scix  
new ShellSort(), ]WzeJ"r {3  
new QuickSort(), _s+G02/q1  
new ImprovedQuickSort(), 3GNcnb  
new MergeSort(), jXVvVv  
new ImprovedMergeSort(), M}j[{wW3  
new HeapSort() aZ|?i }  
}; k dWUz(  
c|d,:u#  
public static String toString(int algorithm){ @eZBwFe  
return name[algorithm-1]; D66NF;7q  
} @`#x:p:  
2~ 4&4  
public static void sort(int[] data, int algorithm) { `dD_"Hdt  
impl[algorithm-1].sort(data); 8{]nS8i  
} 7x=4P|(\}  
>gs_Bzy]  
public static interface Sort { 3A{)C_1a  
public void sort(int[] data); ,  O/IY  
} h1"|$  
ZW9OPwV  
public static void swap(int[] data, int i, int j) { ;X a N  
int temp = data; UM#.`  
data = data[j]; mBJr*_p  
data[j] = temp; >_xuXEslUz  
} dC8}Ttc}  
} ,[T/O\k  
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