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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。 L"!BN/i_  
插入排序: K?+ Rq  
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package org.rut.util.algorithm.support; gs77")K&  
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import org.rut.util.algorithm.SortUtil;  Z@`HFZJ  
/** E^. =^bR  
* @author treeroot m,]M_y\u  
* @since 2006-2-2 _&m   
* @version 1.0 -vC?bumR%  
*/ }' t*BaU  
public class InsertSort implements SortUtil.Sort{ Zx]"2U#  
OC[(Eq  
/* (non-Javadoc) 2]*2b{gF,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ffYiu4$m  
*/ Au/n|15->C  
public void sort(int[] data) { 1%6}m`3  
int temp; VN8ao0^d;d  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sxLq'3(  
} ZK]C!8\2|  
} |bz,cvlP W  
} ]={{$}8.  
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} etH%E aF[  
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冒泡排序: Oj0/[(D-  
4<&`\<jZ  
package org.rut.util.algorithm.support; ABp/uJI)  
_ #+~#U%5n  
import org.rut.util.algorithm.SortUtil; Kq';[Yc  
s0"1W"7vh  
/** !(Y23w*  
* @author treeroot #X"eg  
* @since 2006-2-2 [nlW}1)46  
* @version 1.0 QY<2i-A  
*/ X^H)2G>e  
public class BubbleSort implements SortUtil.Sort{ Dl%NVi+n  
Pw'3ya8  
/* (non-Javadoc) `=Hh5;ep  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O=St}B\!m  
*/ OPwj*b:-m  
public void sort(int[] data) { ( Qw"^lE3  
int temp; dg1h<]T"9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .Eg>)  
if(data[j] SortUtil.swap(data,j,j-1); @vaK-&|#$  
} 3B|o   
} T!)v9L  
} `:A`%Fg8<  
} eJ#q! <   
``}EbOMG  
} 8:,l+[\  
X] &Q^  
选择排序: m>'sM1s  
fgP_NYfOj  
package org.rut.util.algorithm.support; tq^H)  
T?c:z?j_9  
import org.rut.util.algorithm.SortUtil; >_]j{}~\k  
vd9><W  
/** /nRi19a%xU  
* @author treeroot >T4.mB7+>  
* @since 2006-2-2 :d-+Z%Y  
* @version 1.0 ND7 gxt-B  
*/ A|8(3PiP  
public class SelectionSort implements SortUtil.Sort { ^l6q  
?y7x#_Exc  
/* W9T,1h5x  
* (non-Javadoc) y!Q&;xO+!  
* kQ~*iY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $aX}i4F  
*/ IXugnvyV  
public void sort(int[] data) { Sf)VQ5U!Y  
int temp; 2mbZ6'p {  
for (int i = 0; i < data.length; i++) { 4*_9Gl  
int lowIndex = i; M yr [  
for (int j = data.length - 1; j > i; j--) { 5 d S5,  
if (data[j] < data[lowIndex]) { jyf[O -  
lowIndex = j; Qd 1Q~PBla  
} ]dc^@}1bN  
} A\_cGM2  
SortUtil.swap(data,i,lowIndex); q7C>A`w  
} XU .FLNe  
} WLEjRx  
uHUicZf.  
} -1~bWRYq  
Mjrl KI}f/  
Shell排序: o@r+Y  
e qQAst#~  
package org.rut.util.algorithm.support; E3y"  
g&H6~ +\  
import org.rut.util.algorithm.SortUtil; `6b!W0$ -  
}r6SV%]:  
/** HP2]b?C  
* @author treeroot J A ]s  
* @since 2006-2-2 #n 7uw  
* @version 1.0 "EQ-`b=I4  
*/ X6/k `J  
public class ShellSort implements SortUtil.Sort{ "8aw=3A  
iNgHx[*?  
/* (non-Javadoc) XS]=sfN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M& GA:`  
*/ cTFyF)  
public void sort(int[] data) { r"SuE:D  
for(int i=data.length/2;i>2;i/=2){ yK<%AV@v  
for(int j=0;j insertSort(data,j,i); utC]GiR  
} ;-47d ^  
} h&||Ql1  
insertSort(data,0,1); impzqQlZ,  
} c.Pyt  
it!8+hvq9*  
/** 16[>af0<g  
* @param data 0}k[s+^  
* @param j |<P]yn  
* @param i `AeId/A4n  
*/ `(<XdlOj  
private void insertSort(int[] data, int start, int inc) { u<./ddC  
int temp; 9. Q;J#;1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (t1:2WY@  
} b;O]@kBB  
} |r!G(an1x4  
} *?7Ie;)  
DF/p{s1Y3  
} s"<k) Xi  
J_OIU#-B  
快速排序: el39HB$  
dy;Ue5  
package org.rut.util.algorithm.support; C".&m  
IM}T2\tZ}  
import org.rut.util.algorithm.SortUtil; p mcy(<  
J (Yfup  
/** .G#S*L  
* @author treeroot a-,!K  
* @since 2006-2-2 fP%hr gL  
* @version 1.0 ~S15tZ $  
*/ .HF+JHIUu  
public class QuickSort implements SortUtil.Sort{ f*7/O |Gp  
|j$&W;yC  
/* (non-Javadoc) IY?[0S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gR"'|c   
*/ bWo-( qxq  
public void sort(int[] data) { 2c@R!*  
quickSort(data,0,data.length-1); 5b R;R{:x  
} f@Rn&&-  
private void quickSort(int[] data,int i,int j){ :f?\ mVS+  
int pivotIndex=(i+j)/2; 0: R}  
file://swap .@Z qCH  
SortUtil.swap(data,pivotIndex,j); ~xpU<Pd*  
hV])\t=yf  
int k=partition(data,i-1,j,data[j]); G0Smss=K  
SortUtil.swap(data,k,j); E8u :Fg s  
if((k-i)>1) quickSort(data,i,k-1); }9 N, +*  
if((j-k)>1) quickSort(data,k+1,j); \1hbCv$Hf  
u{yENZ^P  
} [ /w{,+U  
/** y!;rY1  
* @param data h S}?"ST|  
* @param i [WnX'R R  
* @param j $&Ng*oX  
* @return mHB*4L  
*/ ?2_Oa%M  
private int partition(int[] data, int l, int r,int pivot) { 3'8B rK  
do{ *+re2O)Eh'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); e3UGYwQ  
SortUtil.swap(data,l,r); q [Rqy !,  
} tbF>"?FY/  
while(l SortUtil.swap(data,l,r); X"YH49?  
return l; A1zM$ wDU  
} *x2+sgSf_0  
|X k'd@<  
} _>%P};G{>  
2i*-ET  
改进后的快速排序: @*e|{;X]hy  
S)of.Nq.;  
package org.rut.util.algorithm.support; 3t5`,R1@t  
u;p{&\(]  
import org.rut.util.algorithm.SortUtil; s3kHNDdC  
;3OQgKI  
/** YwyP+S r\  
* @author treeroot ~UX@%0%)N  
* @since 2006-2-2 (wU<Kpt?J  
* @version 1.0 B> *zQb2:  
*/ O%;H#3kn&s  
public class ImprovedQuickSort implements SortUtil.Sort { %eB0 )'  
y{+$B Y$_  
private static int MAX_STACK_SIZE=4096; :2iNw>z1  
private static int THRESHOLD=10; ,3 &XV%1  
/* (non-Javadoc) X@|'#%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2%i_SX[  
*/ G=/a>{  
public void sort(int[] data) { a7s+l=  
int[] stack=new int[MAX_STACK_SIZE]; l5QH8eNwME  
z^$DXl@)h  
int top=-1; Yb\t0:_  
int pivot; wl1i @&9  
int pivotIndex,l,r; htX;"R&  
DW&%"$2  
stack[++top]=0; D*BZp0x  
stack[++top]=data.length-1; .|iMKRq  
iZ % KHqG  
while(top>0){ "{1`~pDj?  
int j=stack[top--]; 8TGO6oY+=  
int i=stack[top--]; AVf'"~?  
UjxEbk5>^  
pivotIndex=(i+j)/2; . >[d:0  
pivot=data[pivotIndex]; cih@: =Qy  
v7&oHOk!  
SortUtil.swap(data,pivotIndex,j); ["Mq  
NC'+-P'y  
file://partition (? j $n?p  
l=i-1; ]Ir{9EE v  
r=j; yH5^EY7rQ  
do{ 5S`_q&  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); XG FjqZr`  
SortUtil.swap(data,l,r); oU`8\ n](  
} <"F\&M`G  
while(l SortUtil.swap(data,l,r); @zo}#.g  
SortUtil.swap(data,l,j); wZB:7E%  
2(M^8Bl  
if((l-i)>THRESHOLD){ )Be?axI  
stack[++top]=i; d5h]yIz^  
stack[++top]=l-1; 3<.]+ukm  
} )rcFBD{vM  
if((j-l)>THRESHOLD){ VWDXEa9  
stack[++top]=l+1; ^Z1t'-xZ  
stack[++top]=j; j06?Mm_c2  
} e59P6/z  
"zFv? ay  
} vU,AOK[l{  
file://new InsertSort().sort(data); kHLpa/A  
insertSort(data); zj:= 9$  
} p|fSPSz  
/** X,-QxV=lc)  
* @param data ev~/Hf  
*/ C+ibLS4i  
private void insertSort(int[] data) { 7{F(NJUO1  
int temp; k |}&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x?s5vxAKf  
} xuBXOr4"P  
} 5@l[!Jl0k  
} XRoMD6qf;  
GVS-_KP\  
} ZccQ{$0H  
?^y%UIzf  
归并排序: s+#|j;V<  
.G-F5`2I  
package org.rut.util.algorithm.support; PL vz1}ts  
FyD^\6/x  
import org.rut.util.algorithm.SortUtil; 6G2s^P1Dl@  
Ip c2Qsa  
/** /tIR}qK  
* @author treeroot nADt8  
* @since 2006-2-2 ~q0g7?}&  
* @version 1.0 '2)c;/-E  
*/ &"X6s%ZH|  
public class MergeSort implements SortUtil.Sort{ fzcPi9+  
r*$$82s  
/* (non-Javadoc) xX;@ BS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >JdA,i}1  
*/ >6 p <n  
public void sort(int[] data) { ~9#x/EG/  
int[] temp=new int[data.length]; 5gP<+S#>T  
mergeSort(data,temp,0,data.length-1); X( Q*(_  
} % 1f, 8BM  
Ve/"9 ?Y_  
private void mergeSort(int[] data,int[] temp,int l,int r){ w\(LG_n|  
int mid=(l+r)/2; V[E7 mhqy  
if(l==r) return ; C\.mv|aW~  
mergeSort(data,temp,l,mid); n =SY66  
mergeSort(data,temp,mid+1,r); jC_7cAsl  
for(int i=l;i<=r;i++){ bOIVe  
temp=data; g;p]lVx=>  
} z3F ^OU   
int i1=l; 8R !3}kx  
int i2=mid+1; }mGOEG|F2  
for(int cur=l;cur<=r;cur++){ X`xI~&t_  
if(i1==mid+1) MYVUOd,  
data[cur]=temp[i2++]; bpe8 `b(#  
else if(i2>r) b1X.#pz7F  
data[cur]=temp[i1++]; nq'vq] ]  
else if(temp[i1] data[cur]=temp[i1++]; "= H.$ +  
else >&uG1q0p.  
data[cur]=temp[i2++]; [y^)&L$=  
} Zmx[u_NG  
} !: e0cV  
FN$ hEc!  
} 'vgO`  
NF?FEUoxz  
改进后的归并排序: ,p(4OZz5,  
sU7>q}!  
package org.rut.util.algorithm.support; >;E[XG^  
qg7] YT&  
import org.rut.util.algorithm.SortUtil; sOyWsXd+R'  
iz|mJUx  
/** w1zI"G~4/Q  
* @author treeroot `i{k^Q  
* @since 2006-2-2 e"jA#Y #  
* @version 1.0 IKJ~sw~AQ  
*/ O5"o/Y~m  
public class ImprovedMergeSort implements SortUtil.Sort { c[=%v]j:u  
.aRL'1xHl  
private static final int THRESHOLD = 10; U3ygFW%  
OL+!,Y  
/* 6~g:"}  
* (non-Javadoc) 7ko7)"N  
* tE)%*z@<Lt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H>AzxhX[n  
*/  KR  
public void sort(int[] data) { ":,HY)z  
int[] temp=new int[data.length]; wf7<#jIq  
mergeSort(data,temp,0,data.length-1); 47Y| 1  
} C,C=W]G  
!'14mN#A  
private void mergeSort(int[] data, int[] temp, int l, int r) { vP G!S{4  
int i, j, k; $s2-O!P?  
int mid = (l + r) / 2; Z$R2Z$f  
if (l == r) {HqwpB\@  
return; Q9K+k*?{N  
if ((mid - l) >= THRESHOLD) ':,6s  
mergeSort(data, temp, l, mid); nsyg>=j  
else "?j|;p@!>  
insertSort(data, l, mid - l + 1); [7Nn%eZC  
if ((r - mid) > THRESHOLD) >/"XX,3  
mergeSort(data, temp, mid + 1, r); mRCgKW<  
else D#%J||  
insertSort(data, mid + 1, r - mid); 3 )f=Z2U>  
Q, E!Ew3  
for (i = l; i <= mid; i++) { i_GE9A=h  
temp = data; !DnG)4#  
} z(< E %  
for (j = 1; j <= r - mid; j++) { M3Kpp _d_!  
temp[r - j + 1] = data[j + mid]; Q:+Y-&||"  
} :C42yQAP  
int a = temp[l]; ;U<) $5  
int b = temp[r]; 0:G@a&Lr  
for (i = l, j = r, k = l; k <= r; k++) { e,E;\x &  
if (a < b) { K. G#[  
data[k] = temp[i++]; Pyi PhOJe  
a = temp; v\Y;)/!  
} else { !W:QLOe6F  
data[k] = temp[j--]; 6\86E$f=h  
b = temp[j]; 'OGOT0(  
} PqcuSb6  
} Tu_dkif'  
} OxF\Hm)(  
ZNB*Azi  
/** +2oZB]GPL  
* @param data \Y9=d E}  
* @param l ^J>28Q\S  
* @param i ~E^EF{h   
*/ gx[#@ (  
private void insertSort(int[] data, int start, int len) { M;MD-|U  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _| 8"&*T^  
} *Oz5I  
} | 7>1)  
} RA[` Cp"  
} !w f N~.Y  
UO"8 I2rB  
堆排序: 5d}PrYa  
"4"\tM(  
package org.rut.util.algorithm.support; S=aXmz<  
(I.uQP~H  
import org.rut.util.algorithm.SortUtil; Cu;X{F'H  
q1dYiG.-Z  
/** 5, Yk5?l<'  
* @author treeroot v,>F0ofJ  
* @since 2006-2-2 aic6,>\!'  
* @version 1.0 {>FA ~}cX.  
*/ &P3B  
public class HeapSort implements SortUtil.Sort{ B_5q}Bp<  
Wr)% C  
/* (non-Javadoc) >mF`XbS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8KWT d  
*/ `?JrC3  
public void sort(int[] data) { #<'/s qL  
MaxHeap h=new MaxHeap(); N83RsL "}_  
h.init(data); :o}7C%Q8  
for(int i=0;i h.remove(); x6DH0*[.  
System.arraycopy(h.queue,1,data,0,data.length); =hl-c  
} $Z28nPd/  
}T c)M_  
private static class MaxHeap{ `"ie57-  
A94VSUDA:  
void init(int[] data){ <2cq 0*$  
this.queue=new int[data.length+1]; p'w[5'  
for(int i=0;i queue[++size]=data; [F/xU  
fixUp(size); '&<-,1^L  
} Zl,K#  
} OD1ns  
r)j#Skh].  
private int size=0; R:.7 c(s  
^\+6*YE 4  
private int[] queue; I:6xDDpZG`  
KktTR`W  
public int get() { RM<\bZPc  
return queue[1]; M2xUs  
} bkOm/8k|4  
5 #kvb$97  
public void remove() { !d(!1fC  
SortUtil.swap(queue,1,size--); g<.8iW 'c  
fixDown(1); D[-Ct  
} 0_]aF8j  
file://fixdown 0)2lBfHQ&  
private void fixDown(int k) { wG{o bsL.!  
int j; V GvOwd)E  
while ((j = k << 1) <= size) { v>R.M"f  
if (j < size %26amp;%26amp; queue[j] j++; V)(pe #P  
if (queue[k]>queue[j]) file://不用交换 w@:o:yLS  
break; [\.>BK  
SortUtil.swap(queue,j,k); gdG: &{|x  
k = j; ))KsQJ"V  
} +$ -#V   
} ^cAJCbp7  
private void fixUp(int k) { "   c  
while (k > 1) { Ck^=H  
int j = k >> 1; 1$Hf`h2  
if (queue[j]>queue[k]) (u'/tNGS  
break; wUV%NZB  
SortUtil.swap(queue,j,k); LB{a&I LG  
k = j; 8 Zj>|u  
} 6nq.~f2`  
} ',&MYm\  
!<X_XA  
} ?,8b-U#A1  
.A `:o  
} blPC"3}3Vd  
x4( fW\  
SortUtil: & {/ u>,  
fzio8m KVX  
package org.rut.util.algorithm; uBMNkN8  
=H?Nb:s  
import org.rut.util.algorithm.support.BubbleSort; G? _,(  
import org.rut.util.algorithm.support.HeapSort; 5g5pzww  
import org.rut.util.algorithm.support.ImprovedMergeSort; ,pG63&?j  
import org.rut.util.algorithm.support.ImprovedQuickSort; '#Fh J%x  
import org.rut.util.algorithm.support.InsertSort; U92hv~\  
import org.rut.util.algorithm.support.MergeSort; #62ww-E~  
import org.rut.util.algorithm.support.QuickSort; T a[74;VO  
import org.rut.util.algorithm.support.SelectionSort; *oWzH_  
import org.rut.util.algorithm.support.ShellSort; =N0cz%  
H5%I?ZXw4  
/** Qv=Z  
* @author treeroot _k@l-Bj  
* @since 2006-2-2 #FQVhgc  
* @version 1.0 U{}7:&As  
*/ Z"^@B2v  
public class SortUtil { enr mjA&3  
public final static int INSERT = 1; E<4}mSn)  
public final static int BUBBLE = 2; .KLuGb 3JJ  
public final static int SELECTION = 3; t&uHn5  
public final static int SHELL = 4; 5.E 2fX  
public final static int QUICK = 5; $G}Q}f  
public final static int IMPROVED_QUICK = 6; W P&zF$  
public final static int MERGE = 7; "|%fA E  
public final static int IMPROVED_MERGE = 8; E4.IS =4S  
public final static int HEAP = 9; +]zP $5_e  
CKur$$B  
public static void sort(int[] data) { O^$Zz<  
sort(data, IMPROVED_QUICK); m{yON&y  
} syfR5wc  
private static String[] name={ Bx)&MYY}[[  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 4%7*tVG  
}; 4>HGwk@+8  
sP |i '  
private static Sort[] impl=new Sort[]{ OE"Bb   
new InsertSort(), *Wau7  
new BubbleSort(),  M:$nL  
new SelectionSort(), }.vy|^X  
new ShellSort(), K!~ ](_W!  
new QuickSort(), <>oW f  
new ImprovedQuickSort(), Z}C%%2Iz  
new MergeSort(), 0A9cu,ZdUR  
new ImprovedMergeSort(), /km3L7L%R  
new HeapSort() *X-$* ~J0  
}; ;CZcY] ol  
BYf"l8^,  
public static String toString(int algorithm){ h:NXO'  
return name[algorithm-1]; !;a<E:  
} i5"q1dRQ  
iD`XD\.?  
public static void sort(int[] data, int algorithm) { mTgn}rXk  
impl[algorithm-1].sort(data); @ $R a  
} 8gxLL59  
q}i87a;m  
public static interface Sort { y^rg%RV  
public void sort(int[] data); !/zj7z !  
}  B" z5j  
hH/ O2  
public static void swap(int[] data, int i, int j) { g1|c?#fwo  
int temp = data; UXJl;M b  
data = data[j]; ~-%A@Lt  
data[j] = temp; n}?G!ySg  
} 7A6sSfPUy  
} }b(e  
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