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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。 G<:gNWXd\  
插入排序: 6tZ ak1=V  
g)L<xN8  
package org.rut.util.algorithm.support; [M/0Qx[,  
f(UB$^4  
import org.rut.util.algorithm.SortUtil; ?mn&b G  
/** 57( 5+Zme  
* @author treeroot =lZtI6tZ  
* @since 2006-2-2 ,Z$!:U  
* @version 1.0 Y5z5LG4  
*/ Rv)*Wo!L  
public class InsertSort implements SortUtil.Sort{ [!ilcHE)  
+%  !'~  
/* (non-Javadoc) ,,=VF(@G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ny` =]BA  
*/ 1EAQ ~S!2  
public void sort(int[] data) { ;6}> Shs  
int temp; 1uco{JX<S  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K3xt,g  
} w:nLm,  
} FxdWJ|rN9D  
} :`B70D8ku  
^ /ZNdwx  
} t>}(` 0  
VOGx  
冒泡排序: z2~\ b3G  
?<efKs  
package org.rut.util.algorithm.support; P{+,?X\  
 WJTc/  
import org.rut.util.algorithm.SortUtil; BT^HlW<  
r)|6H"n#]S  
/** 8e"MP\0V  
* @author treeroot 6Wk9"?+1  
* @since 2006-2-2 vI \8@97  
* @version 1.0 I_5[-9  
*/ ~B\O{5W  
public class BubbleSort implements SortUtil.Sort{ `l?(zy:R  
*?rO@sQy]  
/* (non-Javadoc) A_g\Fa[jG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lS{ ^*(a  
*/ ~FnuO!C  
public void sort(int[] data) { $EG9V++b3  
int temp; uNf97*~_  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {J*|)-eAw  
if(data[j] SortUtil.swap(data,j,j-1); 6Z<|L^  
} q+2v9K@  
} js;k,`  
}  N<~LgH  
} 6%Pvh- ~_  
kgP6'`}E[  
} Y?AvcY.  
$CDRIn50  
选择排序: nhy:5eSK  
#H;1)G(/  
package org.rut.util.algorithm.support; q}gM2Ia'vY  
L~("C  
import org.rut.util.algorithm.SortUtil; WI1DL&*B@<  
snP]&l+  
/** 2(k m]H^  
* @author treeroot I#/"6%e  
* @since 2006-2-2 Yy0U2N [i  
* @version 1.0 t1ers> h  
*/ XwIhD  
public class SelectionSort implements SortUtil.Sort {  PckAL  
R>hL.+l.  
/* k>F>y|m  
* (non-Javadoc) } 8[  
* /^$n&gI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u/ri {neP{  
*/ =s9*=5r8  
public void sort(int[] data) { sF3@7~m4  
int temp; e.W<pI,  
for (int i = 0; i < data.length; i++) { , [<$X{9  
int lowIndex = i; -/:K.SY,  
for (int j = data.length - 1; j > i; j--) { QZJnb%]  
if (data[j] < data[lowIndex]) { O*%5P5'p"{  
lowIndex = j; )hC3'B/[Y  
} e/x6{~ju^N  
} mV+9*or  
SortUtil.swap(data,i,lowIndex); lUdk^7:M  
} v8zOY#?  
} #e1iYFgS  
lYmxd8  
} `dhBLAt  
(gIFuOGi>  
Shell排序: ;rV+eb)I  
_{n4jdw%(  
package org.rut.util.algorithm.support; ^oR qu  
4'td6F  
import org.rut.util.algorithm.SortUtil; & Zjs  
@"H7Q1Hg!*  
/** 7~);,#[ky  
* @author treeroot p0PK-e`@:  
* @since 2006-2-2 'F3@Xh  
* @version 1.0 sFHqLG{/  
*/ KwgFh#e  
public class ShellSort implements SortUtil.Sort{ ([#'G+MC&  
L`(\ud  
/* (non-Javadoc) ' H4m"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xVRxKM5 {  
*/ *P|~v Cnr  
public void sort(int[] data) { v]rbm}uU9  
for(int i=data.length/2;i>2;i/=2){ 6}~k4;'}A  
for(int j=0;j insertSort(data,j,i); 7}e5ac  
} 5Pf)&iG  
} {$ > .I  
insertSort(data,0,1); BAi`{?z$<  
} FAX[| p  
}z,9!{~`  
/** nJ$2RN  
* @param data ].sD#~L_  
* @param j C-g,uARX(r  
* @param i Z<QNzJ D  
*/ wPq9`9 #  
private void insertSort(int[] data, int start, int inc) { .hUlI3z9  
int temp; pE%*r@p4&4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %:j`%F;R  
} EMpq+LrN  
} 9W, %[  
} JeF$ W!!{  
h!Y##_&&4  
} K_k'#j~*?  
9|Ylv:sR  
快速排序:  S9^S W3  
3Pp+>{2_?  
package org.rut.util.algorithm.support; h50]%tp\  
%V#MUi1  
import org.rut.util.algorithm.SortUtil; Pz\ByD  
4iZg2"[D  
/** u6%\ZK._ \  
* @author treeroot )&Z`SaoP|J  
* @since 2006-2-2 7U-}Y  
* @version 1.0 @pH6FXVGzt  
*/ ]z#)XW3#i  
public class QuickSort implements SortUtil.Sort{ =)Fb&h]G^  
)l/ .<`|  
/* (non-Javadoc) 5>UQ3hWo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ia-ht>F*;  
*/ k~I]Y,  
public void sort(int[] data) { ";7/8(LBZ  
quickSort(data,0,data.length-1); f=.!/e70  
} My Ky*wD  
private void quickSort(int[] data,int i,int j){ 6uKP BL@,  
int pivotIndex=(i+j)/2; ; 6PRi/@  
file://swap BoOuN94  
SortUtil.swap(data,pivotIndex,j); u~>G8y)k9O  
x-W~&`UU  
int k=partition(data,i-1,j,data[j]); j"fx|6l)  
SortUtil.swap(data,k,j); Lf%=vd  
if((k-i)>1) quickSort(data,i,k-1); dp&G([  
if((j-k)>1) quickSort(data,k+1,j); HXC\``E  
[lVfhXc&  
} i7cUp3  
/** *e<}hm Dr  
* @param data Uq`6VpZ  
* @param i ^Wn+G8n  
* @param j FnI}N;"  
* @return #)@#Qd  
*/  \S1W,H|  
private int partition(int[] data, int l, int r,int pivot) { %*o  
do{ 1Kr$JIcd  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); z30 mk  
SortUtil.swap(data,l,r); EUVD)+it  
} sv!v`zh  
while(l SortUtil.swap(data,l,r); iX<" \pV  
return l; wwQ2\2w>Hm  
} NHe)$%a=H  
g'{?j~g  
} Ryh 0r  
(:O6sTx-hE  
改进后的快速排序: <&gs)BY  
ru6M9\h*  
package org.rut.util.algorithm.support; '[HQ}Wvn  
l9OpaOVfJ  
import org.rut.util.algorithm.SortUtil; Dsn=fht  
,>za|y<n  
/** }0Uh<v@  
* @author treeroot /8nUecr  
* @since 2006-2-2 DVMdRfA  
* @version 1.0 _0FMwC#DY  
*/ 6\jbSe  
public class ImprovedQuickSort implements SortUtil.Sort { D$>&K&  
mBb3Ta  
private static int MAX_STACK_SIZE=4096; iH@u3[w  
private static int THRESHOLD=10; ~WORC\kCW  
/* (non-Javadoc) AzSu_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5k9 vYW5k  
*/ %NJ0 Y(:9(  
public void sort(int[] data) { +rA#]#hN  
int[] stack=new int[MAX_STACK_SIZE]; GAZRQ  
s6Dkh}:d  
int top=-1; (5,x5l]-N  
int pivot; kFY2VPP~  
int pivotIndex,l,r; ?1c7wEk  
 ;(J&%  
stack[++top]=0; '/t9#I@G\  
stack[++top]=data.length-1; j@^zK!mO  
XjP &  
while(top>0){ 6xwjKh:9  
int j=stack[top--]; mpCu,l+lo  
int i=stack[top--]; ]7>#YKH.  
[]aw;\7}Y  
pivotIndex=(i+j)/2; %<+uJ'pj  
pivot=data[pivotIndex]; 3$q#^UvD  
_`O",Ff  
SortUtil.swap(data,pivotIndex,j); Q4L=]qc T  
QBH|pr  
file://partition -mGG:#yP  
l=i-1; 0l& '`  
r=j; IVZUB*wv)b  
do{ @$ Nti>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <8Tp]1z  
SortUtil.swap(data,l,r); (aC=,5N  
} 8_G6X\q};  
while(l SortUtil.swap(data,l,r); 5uahfJk  
SortUtil.swap(data,l,j); X }i2qv  
KdYR?rY  
if((l-i)>THRESHOLD){ 9I2&Vx=DSt  
stack[++top]=i; 0#Pa;(  
stack[++top]=l-1; ],[<^=|  
} SZLugyZ2Y  
if((j-l)>THRESHOLD){ m@+QC$6S  
stack[++top]=l+1; @: =vK?8L  
stack[++top]=j; 8~t8^eBg  
} maY.Z<lN  
7l/lY-zO  
} KK1?!7  
file://new InsertSort().sort(data); G`jvy@  
insertSort(data); b_6cK#  
} .0RQbc9  
/** +boL?Ix+  
* @param data nxBP@Td  
*/ cYe2 a "  
private void insertSort(int[] data) { u-s*k*VHoc  
int temp; ,}@4@ >?K  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zVf79UrK  
} On~KTt3Mp  
} rc<Ix  
} d4ld-y  
64mD%URT  
} G4P*U3&p  
\'[tfSB  
归并排序: Ii5U) "  
[7HBn  
package org.rut.util.algorithm.support; 1 I.P7_/  
~E y+  
import org.rut.util.algorithm.SortUtil; Wa.xm_4s2  
&0y` Gt  
/** H lM7^3(&  
* @author treeroot ~Js kA5h|&  
* @since 2006-2-2 ~$C<^?"b  
* @version 1.0 3@Fa  
*/ Y@#N_]oXj  
public class MergeSort implements SortUtil.Sort{ trrK6(p  
z_lKq}^~6  
/* (non-Javadoc) t2OBVzK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) na8`V`77  
*/ B0)|sH  
public void sort(int[] data) { EirZ}fDJzB  
int[] temp=new int[data.length]; #}@8(>T  
mergeSort(data,temp,0,data.length-1); 8q{|nH  
} L[ D+=  
{~FPvmj&  
private void mergeSort(int[] data,int[] temp,int l,int r){ "+7E9m6I  
int mid=(l+r)/2; GiM-8y~  
if(l==r) return ; Dt(D5A  
mergeSort(data,temp,l,mid); FvPWS!H  
mergeSort(data,temp,mid+1,r); SpU|Q1Q/h  
for(int i=l;i<=r;i++){ :Z2997@Y  
temp=data; hLuv  
} v{ohrpb0v  
int i1=l; (BxmV1  
int i2=mid+1; w:deQ:k  
for(int cur=l;cur<=r;cur++){ v&/H6r#E.  
if(i1==mid+1) >lQa"F=  
data[cur]=temp[i2++]; $H)!h^7^9  
else if(i2>r) )$i,e`T   
data[cur]=temp[i1++]; +"BJjxG  
else if(temp[i1] data[cur]=temp[i1++]; [ei~Xkzkj  
else %s+'"E"E  
data[cur]=temp[i2++]; R6fkc^  
} sU*?H`U3d  
} /t7f5mA  
.AO-S)wHR  
} b=2:\F  
<&) hg:  
改进后的归并排序: V,Nu!$)J  
=j- ,yxBvJ  
package org.rut.util.algorithm.support; <7rj,O1=  
=$gBWS  
import org.rut.util.algorithm.SortUtil; Y7p@NG&1q  
& ck}3\sQ  
/** #;^UW  
* @author treeroot e/:?9  
* @since 2006-2-2 hI*v )c  
* @version 1.0 h0k?(O  
*/ ;Bz| hB{  
public class ImprovedMergeSort implements SortUtil.Sort { k;t G-~\d  
6=$<R4B  
private static final int THRESHOLD = 10; V-go?b`  
F09%f"9  
/* |X A0F\  
* (non-Javadoc) fvH{ va.  
* P)f8 lU^z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g&F$hm  
*/ Y ?n4#J<  
public void sort(int[] data) { d ([~o  
int[] temp=new int[data.length]; yc3/5]E&  
mergeSort(data,temp,0,data.length-1); &}P#<"Fo8Q  
} vw3[(_MV3_  
JZxA:dg l  
private void mergeSort(int[] data, int[] temp, int l, int r) { 0%L:jq{5  
int i, j, k; =0EKrG  
int mid = (l + r) / 2; O9By5j 4  
if (l == r) VPT?z  
return; SZrc-f_  
if ((mid - l) >= THRESHOLD) ^ }5KM87  
mergeSort(data, temp, l, mid); fu~iF  
else f9>pMfi:@  
insertSort(data, l, mid - l + 1); yBs-bp"-  
if ((r - mid) > THRESHOLD) z Gg)R  
mergeSort(data, temp, mid + 1, r); #\Y`?  
else >%92,hg  
insertSort(data, mid + 1, r - mid); W&9 qgbO]  
,qp8Rg|3j  
for (i = l; i <= mid; i++) { 3]JJCaf  
temp = data; ."BXA8c;A  
} juF=ZW%i  
for (j = 1; j <= r - mid; j++) { *Us}E7/"'  
temp[r - j + 1] = data[j + mid]; L(Twclrb  
} {vW0O&[  
int a = temp[l]; LFi* O&  
int b = temp[r]; ;DnUeE8  
for (i = l, j = r, k = l; k <= r; k++) { vI(LIfe;  
if (a < b) { dz/@]a  
data[k] = temp[i++]; 1DAU *^-  
a = temp; *`w>\},su  
} else { m`8{arz2  
data[k] = temp[j--]; J>T98y/))  
b = temp[j]; &XcPHZy'  
} z)^.ai,:0  
} t~K[`=G\ex  
} 5ta;CG  
0F- +)S?M[  
/** &)tv4L&  
* @param data vO9=CCxvq  
* @param l 6U8esPs,  
* @param i iZnLgkk@  
*/ JSju4TQ4  
private void insertSort(int[] data, int start, int len) { ._]Pz 6  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W>+`e]z  
} :PN%'~}n  
} Q~wS2f`)  
} J`[jub  
} wI 7gHp  
#P}n+w_@  
堆排序: w$iPFZC'  
:qj^RcmVPL  
package org.rut.util.algorithm.support; ydOG8EI  
Oj%5FUP~[%  
import org.rut.util.algorithm.SortUtil; x5PM ]~"p  
s92ol0`  
/** WO%pX+PoH  
* @author treeroot L58H)V3Pn  
* @since 2006-2-2 5p~5-_JX  
* @version 1.0 G/3T0d+-  
*/ /]J\/Z>  
public class HeapSort implements SortUtil.Sort{ 9@"pR;X@  
;Q vQ fV4  
/* (non-Javadoc) T'lycc4~a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SOsz=bVx  
*/ (m! kg  
public void sort(int[] data) { uc"%uc'  
MaxHeap h=new MaxHeap(); Ue;Z)}  
h.init(data); }L|B@fW  
for(int i=0;i h.remove(); G+2fmVB*X  
System.arraycopy(h.queue,1,data,0,data.length); > fV "bj.  
} 7O|`\&RY R  
F%lC%~-qh  
private static class MaxHeap{ ^4]=D nd%  
V+lS\E.  
void init(int[] data){ Z5U\>7@&8  
this.queue=new int[data.length+1]; o58c!44  
for(int i=0;i queue[++size]=data; "S'Yn-  
fixUp(size); (m Yi  
} *rxYal4ad  
} $u ,6x~>  
qk^/ &j  
private int size=0; |/xA5_-N  
~};q/-[r  
private int[] queue; hfbu+w):  
{0,6- dd5  
public int get() { sx7zRw >X  
return queue[1]; T3=h7a %=  
} [x, `)Fk  
-:r<sv$  
public void remove() { 0>-}c>  
SortUtil.swap(queue,1,size--); t~ I;IB  
fixDown(1); xuqG)HthRS  
} w1zMY:9  
file://fixdown P$y'``  
private void fixDown(int k) { q4!\^HwQ  
int j; vY.VFEP/  
while ((j = k << 1) <= size) { dJrUcZBr  
if (j < size %26amp;%26amp; queue[j] j++; CflyK@  
if (queue[k]>queue[j]) file://不用交换 6Ktq7'Z@  
break; bnvY2-O6  
SortUtil.swap(queue,j,k); [h B$%i]\<  
k = j; ]i,o+xBKH  
} -Mrt%1g  
} &k_LK  
private void fixUp(int k) { 7KUf,0D  
while (k > 1) { v \; /P  
int j = k >> 1; 7J6Z?  
if (queue[j]>queue[k]) F_w+8)DZ  
break; Bnwq!i!M  
SortUtil.swap(queue,j,k); JP( tf+  
k = j; ~bzac2Rp  
} *m>[\)  
} ^gyI-S(;  
Jo;&~/ V   
} N5K2Hv<"  
K3=0D!Dq  
} BL>~~  
F3o"ETle  
SortUtil: 0cfGI%  
@U?&1.\  
package org.rut.util.algorithm; s%vy^x29  
qW4\t  
import org.rut.util.algorithm.support.BubbleSort; >Sw?F&  
import org.rut.util.algorithm.support.HeapSort; ra^%__N}  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ax=)J{4v  
import org.rut.util.algorithm.support.ImprovedQuickSort; 16@<G  
import org.rut.util.algorithm.support.InsertSort; F+BCzsm7$  
import org.rut.util.algorithm.support.MergeSort; @}PX:*c  
import org.rut.util.algorithm.support.QuickSort; eAP 8!  
import org.rut.util.algorithm.support.SelectionSort; z"QtP[_m  
import org.rut.util.algorithm.support.ShellSort; PC255  
Z'5&N5hx  
/** s7:_!Nd@8  
* @author treeroot y>h9:q|  
* @since 2006-2-2 p NQ7uy  
* @version 1.0 |Go$z3bx  
*/ s]A8C^;c  
public class SortUtil { [%6)  
public final static int INSERT = 1; pH3\X cn  
public final static int BUBBLE = 2; tV pXA'"!x  
public final static int SELECTION = 3; X+u1p?  
public final static int SHELL = 4; %`]!atH  
public final static int QUICK = 5; Y+g(aak+.  
public final static int IMPROVED_QUICK = 6; WLVkrTvX  
public final static int MERGE = 7; B2LXF3#/  
public final static int IMPROVED_MERGE = 8; y|0/;SjV  
public final static int HEAP = 9; p0CPeH  
a[rb-Z  
public static void sort(int[] data) { o F_r C[  
sort(data, IMPROVED_QUICK); D ZZRu8~  
} N|"kuRN#  
private static String[] name={ +mR^I$9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" G*%U0OTi  
}; H)&iFq  
hz<TjWXv'  
private static Sort[] impl=new Sort[]{ ;P8% yf  
new InsertSort(), `YZl2c<w*  
new BubbleSort(), tGXH)=K  
new SelectionSort(), %2\Pe 2Z  
new ShellSort(), K/}x'*=  
new QuickSort(), {^;7DV:  
new ImprovedQuickSort(), ?uJX  
new MergeSort(), DMp@B]>  
new ImprovedMergeSort(), 3'A0{(b  
new HeapSort() fJk'5kv  
}; >X iT[Ru  
2w+4B4  
public static String toString(int algorithm){ s?9Y3]&+&M  
return name[algorithm-1]; 8gt*`]I  
} Bzt:9hr6BO  
qJonzFp7  
public static void sort(int[] data, int algorithm) { \x4:i\Fx@  
impl[algorithm-1].sort(data); NN+;I^NqW&  
} }[@Q**j(  
$txF|Fj]^A  
public static interface Sort { uz$p'Q  
public void sort(int[] data); ^k^?>h  
} ~h=iZ/g_^_  
fF#Fc&B  
public static void swap(int[] data, int i, int j) { ;GOu'34j  
int temp = data; [C;Neslo  
data = data[j]; XUUP#<,s  
data[j] = temp; BjTgZ98J  
} cmCD}Skk  
} SG0PQ  
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