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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。 _ *Pf  
插入排序: u>a5GkG.  
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package org.rut.util.algorithm.support; Ry6@VQ"NLb  
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import org.rut.util.algorithm.SortUtil; 59;KQ  
/** f\L0 xJ  
* @author treeroot 2.%ITB  
* @since 2006-2-2 }y gD3:vN7  
* @version 1.0 tJ$_lk ~6q  
*/ PtiOz :zV  
public class InsertSort implements SortUtil.Sort{ U26}gT)  
5vnrA'BhBU  
/* (non-Javadoc) ~6LN6}~|.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N6i Q8P -  
*/ R%[ c;i  
public void sort(int[] data) { dhK~O.~m  
int temp; P.9>z7l{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lA8`l>I  
} ]Gq !`O1  
} :P0mx   
} -r]W  
[FR`Z=%  
} oE]QF.n#  
l}K37f  
冒泡排序: mrtb*7`$  
4ID5q~  
package org.rut.util.algorithm.support; +A?U{q  
<=C!VVk4f  
import org.rut.util.algorithm.SortUtil; <x>M o   
#Ki[$bS~6  
/** Z=vU}S>r|v  
* @author treeroot rf{rpe$  
* @since 2006-2-2 ?hy&  
* @version 1.0 m^;f(IK5  
*/ nUOz\ y  
public class BubbleSort implements SortUtil.Sort{ xdkZdx>N  
J<jy2@"tXo  
/* (non-Javadoc) WCixKYq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g{&ui.ml&  
*/ Yr[\|$H5  
public void sort(int[] data) { D2~*&'4y  
int temp; ge8ZsaiU  
for(int i=0;i for(int j=data.length-1;j>i;j--){ amY!qg0P*  
if(data[j] SortUtil.swap(data,j,j-1); {&1/V  
} f9{Rb/l!BQ  
} [Y| t]^M  
} Z4 =GMXj  
} 1o{Mck  
2`=7_v  
} _KAQ}G3  
^s"R$?;h  
选择排序: ;>7De8v@@  
{F.[&/A  
package org.rut.util.algorithm.support; 1/J=uH  
9~[Y-cpoi  
import org.rut.util.algorithm.SortUtil; I9ep`X6Y  
< h *4Q  
/** ER.}CM6{[  
* @author treeroot k@W1-D?  
* @since 2006-2-2 U&p${IcEm  
* @version 1.0 nb%6X82Q  
*/ [MY|T<q  
public class SelectionSort implements SortUtil.Sort { |Z +=  
=Jb>x#Y  
/* %n9aaoD  
* (non-Javadoc) JIq=* '  
* >pe.oxY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6(ol1 (U  
*/ $1`2 kM5  
public void sort(int[] data) { cSV aI  
int temp; yD}B%\45  
for (int i = 0; i < data.length; i++) { l!u_"I8j5  
int lowIndex = i; g]0_5?i  
for (int j = data.length - 1; j > i; j--) { P-"y3 ZE=  
if (data[j] < data[lowIndex]) { 7zG_(83)K  
lowIndex = j; [.wYdv35  
} xU`p|(SS-  
} H9e<v4 c  
SortUtil.swap(data,i,lowIndex); 2[02,FG  
} \bw2u!  
} #AQV(;r7@  
8bld3p"^  
} ~b8]H|<'Y  
h~zT ydnH  
Shell排序: Ig>(m49d  
E r?&Y,o  
package org.rut.util.algorithm.support; r_A$DaC]  
vx5Zl&6r  
import org.rut.util.algorithm.SortUtil; fI|Nc  
4'=y:v2  
/** P5 ywhw-  
* @author treeroot 3(80:@|  
* @since 2006-2-2 f4|rVP|x  
* @version 1.0 qUb&   
*/ t"oeQ*d%  
public class ShellSort implements SortUtil.Sort{ I-l_TpM)  
&{t,'[ u  
/* (non-Javadoc) M9%$lCl   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5:_}zu|!u  
*/ e+fN6v5pU  
public void sort(int[] data) { NK H@+,+V  
for(int i=data.length/2;i>2;i/=2){ ?4T-@~~*`=  
for(int j=0;j insertSort(data,j,i); ysY*k`5  
} /N.U/MPL_  
} IJcsmNWm  
insertSort(data,0,1); \qJXF|z<K  
} d8P^lv*rQW  
|P?*5xPB  
/** `r 3  
* @param data .(k|wX[Fu~  
* @param j %d9uTm;  
* @param i >i?oC^QM  
*/ S3Jo>jXS "  
private void insertSort(int[] data, int start, int inc) { @`9]F7h5W  
int temp; (TT}6j  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .HABNPNg(  
} :gFx{*xN/9  
} "E4a=YH_  
} [ub e6  
KF:78C  
} \YrUe1  
,r_Gf5c  
快速排序: )zDCu`  
4;2uW#dG"  
package org.rut.util.algorithm.support; FGBbO\< /  
X|]A T9W  
import org.rut.util.algorithm.SortUtil; >Cq<@$I2EB  
mj7#&r,1l  
/** 5*u+q2\F  
* @author treeroot PXNuL&   
* @since 2006-2-2 c'\dFb9a  
* @version 1.0 gL/9/b4  
*/ `C'H.g\>2Q  
public class QuickSort implements SortUtil.Sort{ #&e-|81H  
*MW\^PR?  
/* (non-Javadoc) >uEzw4w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IO<6  
*/ h^P#{W!e\  
public void sort(int[] data) { ) Hr`M B  
quickSort(data,0,data.length-1); YKK*ER0  
} 7D_=  
private void quickSort(int[] data,int i,int j){ +G>\-tjSD  
int pivotIndex=(i+j)/2;  uHRsFlw  
file://swap !&@615Vtw  
SortUtil.swap(data,pivotIndex,j); WcbiqxK7-  
-"9  
int k=partition(data,i-1,j,data[j]); ;*2Cm'8E  
SortUtil.swap(data,k,j); }4X0epPp;:  
if((k-i)>1) quickSort(data,i,k-1); ]7c=PC  
if((j-k)>1) quickSort(data,k+1,j); R`-S/C  
-jm Y)(\  
} zX i 'kB  
/** p0eX{xm  
* @param data J C}D` h  
* @param i |-~Y#]  
* @param j Pr C{'XDlU  
* @return a(ZcmYzXU  
*/ {Qj~M<@3  
private int partition(int[] data, int l, int r,int pivot) { =:U`k0rn!  
do{ +:/%3}`  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); < I``&>  
SortUtil.swap(data,l,r); as =fCuJ  
} DzRFMYBR  
while(l SortUtil.swap(data,l,r); {?7Uj  
return l; w_VP J  
} NDokSw-  
9%obq/Lb  
} YtLt*Ig%  
86a\+Kz%%L  
改进后的快速排序: Q\0'lQJdy  
E' uZA  
package org.rut.util.algorithm.support; ;}p  
kD"{g#c  
import org.rut.util.algorithm.SortUtil; NvX[zqNP_R  
n~Lt\K:  
/** )D%~` ,#pQ  
* @author treeroot _DEjF)S  
* @since 2006-2-2 z`b,h\  
* @version 1.0 7F.4Ga;  
*/ .*Qx\,  
public class ImprovedQuickSort implements SortUtil.Sort { >^{yF~(  
|;{6& S  
private static int MAX_STACK_SIZE=4096; 7 _[L o4_  
private static int THRESHOLD=10; -$Ih@2"6  
/* (non-Javadoc) ~)M~EX&pK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yx`n:0  
*/ dqcL]e  
public void sort(int[] data) { @>7%qS  
int[] stack=new int[MAX_STACK_SIZE]; `">=  
]hV*r@d  
int top=-1; &BSn?  
int pivot; iH'p>s5L  
int pivotIndex,l,r; X"*5+* z]  
AbOf6%Env  
stack[++top]=0; RPbZ(.  
stack[++top]=data.length-1; +aAc9'k   
I5W~g.<6  
while(top>0){ ;5AcFB  
int j=stack[top--]; {Y1Ck5  
int i=stack[top--]; tpx2 IE  
HjwE+:w  
pivotIndex=(i+j)/2; b7ZSPXV  
pivot=data[pivotIndex]; `@yp+8  
X5w$4Kj&4l  
SortUtil.swap(data,pivotIndex,j); 2B`JGFcdcB  
9A#i_#[R  
file://partition y|jq?M<A  
l=i-1; y>ktcuML  
r=j; Pc]HP  
do{ !d T4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4mbBmQV$#  
SortUtil.swap(data,l,r); s,_m{ to  
} 8xMX  
while(l SortUtil.swap(data,l,r); {2gwk8  
SortUtil.swap(data,l,j); Ws12b $  
*=xr-!MEk  
if((l-i)>THRESHOLD){ H%{+QwzZ[j  
stack[++top]=i; U%/+B]6jP  
stack[++top]=l-1; 4I(Xy]wm  
} 2t1ZIyv3 D  
if((j-l)>THRESHOLD){ |V7*l1  
stack[++top]=l+1; Y|/ 8up  
stack[++top]=j; fd9k?,zM  
} bs1Rvx1:J%  
:MDKC /mC  
} N)Z?Z+ }h  
file://new InsertSort().sort(data); :2)/FPL6  
insertSort(data); /wlEe>i  
} .o}v#W+st  
/** +W+|%qM,\  
* @param data 9Gz=lc[!7  
*/ HLi%%"'  
private void insertSort(int[] data) { !1b;F*H  
int temp; ^d xTm1Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); xe$_aBU  
} '4<1 1(U  
} 7IM@i>p%  
} h@wgd~X9  
2b8L\$1q  
} QSf|nNT  
+qdEq_ m  
归并排序: 3T0"" !Q  
f|oh.z_R  
package org.rut.util.algorithm.support; f`66h M[  
)BfAw  
import org.rut.util.algorithm.SortUtil; z([</D?  
r:TH]hs12+  
/** M rb)  
* @author treeroot <QGXy=  
* @since 2006-2-2 _h1mF<\ X^  
* @version 1.0 S`Rs82>  
*/ ] @fk] ]R  
public class MergeSort implements SortUtil.Sort{ ={Qi0Pvt  
J<lO= +mg  
/* (non-Javadoc) oe~b}:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f(7GX3?  
*/ ~flV`wy$$1  
public void sort(int[] data) { +[g,B1jt  
int[] temp=new int[data.length]; sW8dPw O  
mergeSort(data,temp,0,data.length-1); "tpSg  
} UJ6v(:z <  
eb$#A _m  
private void mergeSort(int[] data,int[] temp,int l,int r){ lqpp)Cq  
int mid=(l+r)/2; 1[-tD 0{H  
if(l==r) return ; JOBhx)E  
mergeSort(data,temp,l,mid); [z9Z5sLO  
mergeSort(data,temp,mid+1,r); '@P^0+B!(.  
for(int i=l;i<=r;i++){ y1L,0 ]  
temp=data; }\k"n{!"  
} A\5L 7  
int i1=l; iO; 7t@]-  
int i2=mid+1; ,~W|]/b<q  
for(int cur=l;cur<=r;cur++){ x'R`. !g3  
if(i1==mid+1) Od)C&N=y  
data[cur]=temp[i2++]; 9( wK@  
else if(i2>r) Wo=jskBrQ  
data[cur]=temp[i1++]; `Ryp% Bn  
else if(temp[i1] data[cur]=temp[i1++]; <1M-Ro?5k  
else Aq7osU1B  
data[cur]=temp[i2++]; @7n"yp*"  
} j"Pv0tehw  
} sCHJ&>m5-  
"C`Ub  
} [}]Q?*_  
Pk)1WK7E  
改进后的归并排序: -A!%*9Z  
7Hu3>4<  
package org.rut.util.algorithm.support; g eCM<]  
jEJT-*I1+  
import org.rut.util.algorithm.SortUtil; uM6+?A9@l  
k"w"hg&e  
/** k|d+#u[Mj@  
* @author treeroot $* Kvc$D  
* @since 2006-2-2 wLr_-vJ  
* @version 1.0 jW@Uo=I[  
*/ }RqK84K  
public class ImprovedMergeSort implements SortUtil.Sort { (dSL7nel;L  
h9W^[6  
private static final int THRESHOLD = 10; Ma"]PoP  
#Mw8^FST  
/* "snw4if  
* (non-Javadoc) W5MTD]J   
* Q]>.b%s[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q5:N2Jmo?z  
*/ ~&bq0 (  
public void sort(int[] data) { 12LL48bi  
int[] temp=new int[data.length]; Z#\P&\`1z  
mergeSort(data,temp,0,data.length-1); u;c?d!E  
} h'F=YF$o  
!C: $?oU  
private void mergeSort(int[] data, int[] temp, int l, int r) { |$b}L7_  
int i, j, k; ekCC5P!  
int mid = (l + r) / 2; #;nYg?d=  
if (l == r) [cp+i^f  
return; XpJ7o=?W3  
if ((mid - l) >= THRESHOLD) n ?Nt6U  
mergeSort(data, temp, l, mid); 92KRb;c  
else }`~+]9 <   
insertSort(data, l, mid - l + 1); ^J;bso`  
if ((r - mid) > THRESHOLD) XOS[No~  
mergeSort(data, temp, mid + 1, r); LFtt gY  
else %bfQ$a:  
insertSort(data, mid + 1, r - mid); <UQbt N-B\  
C~iL3C b  
for (i = l; i <= mid; i++) { 3$9W%3  
temp = data; HA>OkA/  
} n7-6- #  
for (j = 1; j <= r - mid; j++) { <e</m)j  
temp[r - j + 1] = data[j + mid]; y h9*z3  
} 9qG6Pb  
int a = temp[l]; BF{Y"8u$  
int b = temp[r]; 3/n5#&c\4  
for (i = l, j = r, k = l; k <= r; k++) { Jze:[MYS  
if (a < b) { dlTt _.  
data[k] = temp[i++]; )hfpwdQ  
a = temp; u4 h4.NHX  
} else { &KRX[2  
data[k] = temp[j--]; Npy :!  
b = temp[j]; 6~w@PRy  
} JcxThZP~  
} #O dJ"1A|  
} *bA.zmzM  
"1 M[5\Ax  
/** V 6reqEh  
* @param data R/z=p_6p7`  
* @param l 6jLCU%^  
* @param i 9mTJ|sN:e  
*/ hZ  
private void insertSort(int[] data, int start, int len) { ;MdlwQ$`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); dNeVo|Y~h  
} QB'aON\S  
} @2 fg~2M1  
} E09 :E  
} iAIuxO  
| h#u^v3  
堆排序: W|63Ir67  
7E~;xn;  
package org.rut.util.algorithm.support; fS78>*K  
wi6 ~}~%  
import org.rut.util.algorithm.SortUtil; uk<9&{  
)|=j`jCC  
/** ]-/VHh  
* @author treeroot ?2Py_gkf  
* @since 2006-2-2 :!!at:>  
* @version 1.0 Qn)a/w-  
*/ b!5~7Ub.No  
public class HeapSort implements SortUtil.Sort{ UrEs4R1#  
: E )>\&  
/* (non-Javadoc) Qjv}$`M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9m~p0ILh  
*/ *wB1,U{  
public void sort(int[] data) { 5taT5?n2  
MaxHeap h=new MaxHeap(); 7\Y0z  
h.init(data); -z%^)VE  
for(int i=0;i h.remove(); q9r[$%G  
System.arraycopy(h.queue,1,data,0,data.length); ZRU{ [4  
} i6Emhji  
mSh[}%swj  
private static class MaxHeap{ &Ys<@M7E:  
C1 GKLl~  
void init(int[] data){ cB}D^O   
this.queue=new int[data.length+1]; Vb]=B~^`  
for(int i=0;i queue[++size]=data; x)O!["'"  
fixUp(size); 57']#j#"hj  
} ;,:`1UI  
} #fn)k1  
<k'h:KB?`  
private int size=0; aQ\$A`?  
K:# I  
private int[] queue; *d4 eK+U$5  
\\B(r  
public int get() { XYOC_.f1  
return queue[1]; VY=jc~c]v  
} h^(* Tv-!  
+E(L\  
public void remove() { = x)-u8P  
SortUtil.swap(queue,1,size--); DAr1C+Dy  
fixDown(1); '$]97b7G  
} >$/>#e~  
file://fixdown O)n~](sC\  
private void fixDown(int k) { 9gK` E  
int j; M\Ye<Tk  
while ((j = k << 1) <= size) { HJ[cM6$2  
if (j < size %26amp;%26amp; queue[j] j++; uo%)1NS!  
if (queue[k]>queue[j]) file://不用交换 rlSeu5X6  
break; ~ =2PU$u  
SortUtil.swap(queue,j,k); YHygo#4=8  
k = j; Pw`8Wj  
} yZU6xY  
} y'nK>)WG4  
private void fixUp(int k) { B7E:{9l~s{  
while (k > 1) { u[=r,^YQ  
int j = k >> 1; 0gP}zM73  
if (queue[j]>queue[k]) ShP^A"Do  
break; 0)e\`Bv  
SortUtil.swap(queue,j,k); A&Usddcp  
k = j; ~/iKh1 1  
} 9`X\6s  
} hT&Y#fh  
>rmqBDKaQ  
} ZdWm:(nkU  
bUdLs.:  
} Q1I6$8:7  
x}I+Iggi  
SortUtil: J$w<$5UY  
C]`$AqKl  
package org.rut.util.algorithm; qv KG-|j  
z3m85F%dR  
import org.rut.util.algorithm.support.BubbleSort; u?<%q!  
import org.rut.util.algorithm.support.HeapSort; yfjWbW  
import org.rut.util.algorithm.support.ImprovedMergeSort; Z4w!p?Wqa  
import org.rut.util.algorithm.support.ImprovedQuickSort; 6@F9G 4<Z  
import org.rut.util.algorithm.support.InsertSort; sW'AjI  
import org.rut.util.algorithm.support.MergeSort; 17"uf.G  
import org.rut.util.algorithm.support.QuickSort; ' ;FnIZ  
import org.rut.util.algorithm.support.SelectionSort; Ma']?Rb`  
import org.rut.util.algorithm.support.ShellSort; S3*`jF>q  
h-K_Lr]  
/** vm7z,FfN  
* @author treeroot PQSP&  
* @since 2006-2-2 jTtu0Q|  
* @version 1.0 .*S#aq4S  
*/ b;W3j   
public class SortUtil { &4x}ppX  
public final static int INSERT = 1; 0#s"e}@v  
public final static int BUBBLE = 2; )|R)Q6UJ  
public final static int SELECTION = 3; t[;LD_  
public final static int SHELL = 4; 5o'FS{6U  
public final static int QUICK = 5; U!?_W=?  
public final static int IMPROVED_QUICK = 6; dI@(<R  
public final static int MERGE = 7; {14fA)`%  
public final static int IMPROVED_MERGE = 8; qJa H ,  
public final static int HEAP = 9; { VfXsI  
r|fL&dtr  
public static void sort(int[] data) { Zd}9O jz5  
sort(data, IMPROVED_QUICK); m_?~OL S  
} y@:h4u"3  
private static String[] name={ 0oZ= yh  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O1U=X:Zl  
}; oAJM]%g{  
):68%,  
private static Sort[] impl=new Sort[]{ M2>Vj/  
new InsertSort(),  +yH7v5W  
new BubbleSort(), z2_*%S@  
new SelectionSort(), kYqU9cB~  
new ShellSort(), 6azGhxh  
new QuickSort(), 2Aazy'/  
new ImprovedQuickSort(), $=8  NED5  
new MergeSort(), %G_B^p4  
new ImprovedMergeSort(), nn:.nU|I  
new HeapSort() Vvn2 Ep  
}; 2~1SQ.Q<RY  
Is)u }  
public static String toString(int algorithm){ m '|b GV  
return name[algorithm-1]; rJT^H5!o"  
} mAj?>;R2$2  
, j2Udn}  
public static void sort(int[] data, int algorithm) { V6&!9b  
impl[algorithm-1].sort(data); Yz/md1T$  
} +`7i 'ff  
U9:zVy  
public static interface Sort { ^& tZ  
public void sort(int[] data); 9N%We|L,c  
} n.`($yR_  
6xe*E[#k\  
public static void swap(int[] data, int i, int j) { p$NQyS5C"S  
int temp = data; hOu3 bA  
data = data[j]; :0j?oY~e  
data[j] = temp; ,.83m%i  
} LqoB 10Kc\  
} "3)C'WlEy/  
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