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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。 O!+5As  
插入排序: R'HA>?D  
cW^) $>A  
package org.rut.util.algorithm.support; i1 Sc/  
~"0X,APR5  
import org.rut.util.algorithm.SortUtil; iC2nHZ*,  
/** z(68^-V=:  
* @author treeroot G")EE#W$}  
* @since 2006-2-2 y%l#lz=6  
* @version 1.0 ?bDae%>.d,  
*/ (uc)^lfX  
public class InsertSort implements SortUtil.Sort{ F@K;A%us)  
;@s~t:u  
/* (non-Javadoc) fR;_6?p*B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ov>L-  
*/ BtApl)q#  
public void sort(int[] data) { eE_XwLE  
int temp; 7f,W zvV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C2i..iD  
} ~y^lNgujO  
} Y. tFqzo3  
} '+tT$k  
,WK$jHG]  
} jn Y3G  
yyDBW`V((  
冒泡排序: -s "$I:v  
xmx;tq  
package org.rut.util.algorithm.support; VjM uU"++@  
4ux5G`oL  
import org.rut.util.algorithm.SortUtil; <t@*[Aw  
*lO+^\HXD  
/** TBT*j&!L  
* @author treeroot  kovzB]  
* @since 2006-2-2 @23x;x  
* @version 1.0 =6YO!B>7  
*/ 3mz>Y*^?0  
public class BubbleSort implements SortUtil.Sort{ Yk&{VXU<  
HNT8~s.2  
/* (non-Javadoc) | :[vpJFK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zD-8#H35X"  
*/ X6 cb#s0|  
public void sort(int[] data) { b<7 qmg3  
int temp; VbR.tz  
for(int i=0;i for(int j=data.length-1;j>i;j--){ nQmYeM  
if(data[j] SortUtil.swap(data,j,j-1); E=trJge  
} 6LQO>k  
} ZfikNQU9r  
} C;>Ll~f_  
} <Rt@z|Zv  
B(dL`]@Xm  
} nJg2O@mRJ  
rM |RGe  
选择排序: ^u,x~nPXg  
 '|T=  
package org.rut.util.algorithm.support; OG`O i^2  
vn0*KIrX  
import org.rut.util.algorithm.SortUtil; z(eAwmuli  
e84TL U?~  
/** DL_\luh  
* @author treeroot Ts6X:D4,  
* @since 2006-2-2 V1;-5L75  
* @version 1.0 2jC\yY |PN  
*/ WE]^w3n9  
public class SelectionSort implements SortUtil.Sort { yG4MqR)J  
JqZ5DjI:  
/* "Fiv ]^  
* (non-Javadoc) [L^#<@S  
* k({8C`&tK/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,cEcMaJ  
*/ gK#w$s50  
public void sort(int[] data) { 8ipLq`)  
int temp; v%[mt` I  
for (int i = 0; i < data.length; i++) { Q2=~  
int lowIndex = i; D IN PAyY  
for (int j = data.length - 1; j > i; j--) { [K- s\  
if (data[j] < data[lowIndex]) { 6'zy"UkH  
lowIndex = j; rOT8!"  
} %}:J 9vra  
} 6B{Awm@v}X  
SortUtil.swap(data,i,lowIndex); {{,%p#/b  
} )' #(1 ,1k  
} A?zW!'  
CG;D(AWR;  
} A>puk2s  
lR!$+atW  
Shell排序: C-Z,L#  
cj *4 XYu  
package org.rut.util.algorithm.support; sTz*tSwQv  
T-TH. R  
import org.rut.util.algorithm.SortUtil; ewg WzB9c  
rge/jE,^~Z  
/** ?Dm&A$r  
* @author treeroot (Q+3aEUE  
* @since 2006-2-2 (tvh9 o  
* @version 1.0 %ZK}y{u\  
*/ *gn*S3Is[j  
public class ShellSort implements SortUtil.Sort{ x3 S  
4Q5v8k=  
/* (non-Javadoc) R7i*f/m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |sh  U  
*/ w6_}] &F  
public void sort(int[] data) { jo~Pr  
for(int i=data.length/2;i>2;i/=2){ /v[- KjTj7  
for(int j=0;j insertSort(data,j,i); (L1`]cp  
} PR+!CFi&  
} H=jnCGk  
insertSort(data,0,1); q}jf&xUWzH  
} ?*4zNhL  
1yu!:8=ee  
/** Ar==@777j  
* @param data ?6dtvz;K+?  
* @param j }W<L;yD  
* @param i Mw~ ?@Sq  
*/ =EKJ!{  
private void insertSort(int[] data, int start, int inc) { i ,'~Ds  
int temp; -AX3Rnv^!  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); e([&Nr8h  
} bA)Xjq)Rr  
} luMNi^FQ  
} C\{4<:<_&  
eZcm3=WV|  
} Vr*t~M>  
_KFKx3<m!  
快速排序: (GQy"IuFh  
)nY/ RO  
package org.rut.util.algorithm.support; }DSz_^  
1jL?z6S  
import org.rut.util.algorithm.SortUtil; +FiV!nRkZ  
"a: ;  
/** `G'V9Xs(  
* @author treeroot 3 yElN.=  
* @since 2006-2-2 H)S3/%.|  
* @version 1.0 a5'QL(IX  
*/ *=v RX!sI,  
public class QuickSort implements SortUtil.Sort{ R8 m/N t2  
ym KdRF  
/* (non-Javadoc) r#XDgZtI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p})&Zl)V  
*/ R:e:B7O~0  
public void sort(int[] data) { U0rz 4fxc  
quickSort(data,0,data.length-1); |0&S>%=  
} H.9J}k1S  
private void quickSort(int[] data,int i,int j){ {\V)bizY;  
int pivotIndex=(i+j)/2; ~_raI7,  
file://swap oqj3Q 1  
SortUtil.swap(data,pivotIndex,j); F4}Zl  
MwuH.# Ez  
int k=partition(data,i-1,j,data[j]); ; etH)  
SortUtil.swap(data,k,j); Xm*Dh#H  
if((k-i)>1) quickSort(data,i,k-1); WDZEnauE  
if((j-k)>1) quickSort(data,k+1,j); %=]{~5f>  
&EQov9P7  
} L+,{*Uj[;  
/** {5to;\.  
* @param data VHJr+BQ1K/  
* @param i mz#(\p=T  
* @param j /`1zkBj<&  
* @return 53L)+\7w  
*/ T|E;U  
private int partition(int[] data, int l, int r,int pivot) { w qsPGkJJ7  
do{ 9Dpmp|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); cZwQ{9>  
SortUtil.swap(data,l,r); ^Dh2_vbI  
} Z?GC+hG`  
while(l SortUtil.swap(data,l,r); # mzJ^V-  
return l; R ~cc]kp0  
} ;w1h)  
9oaq%Sf  
} Tv(s?T6f  
vj#gY2qZ  
改进后的快速排序: Me8d o; G|  
p0@iGyd  
package org.rut.util.algorithm.support; 7Fq|Zc`P  
,@P3!|  
import org.rut.util.algorithm.SortUtil; `dj/Uk  
/kn t5  
/** 4gYP .h:,  
* @author treeroot LIR2B"3F  
* @since 2006-2-2 >z( 6ADq  
* @version 1.0 =B; )h  
*/ I&^?,Fyy<  
public class ImprovedQuickSort implements SortUtil.Sort { 0AaN  
c*3ilMP\4  
private static int MAX_STACK_SIZE=4096; mX<D]Z< k  
private static int THRESHOLD=10; $H_4Y-xOi  
/* (non-Javadoc) )d s(/P5b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !1!uB }  
*/ {t9U]hX%A[  
public void sort(int[] data) { K[ylyQ1  
int[] stack=new int[MAX_STACK_SIZE]; $CXqkK<6  
jL 2f74?1  
int top=-1; (US8Sc  
int pivot; ZI5UQH/  
int pivotIndex,l,r; atPf527\`  
<q_H 3|  
stack[++top]=0; q6osRK*20  
stack[++top]=data.length-1; n:7=z0 s  
?Ww',e  
while(top>0){ YrB-;R 1+  
int j=stack[top--]; M>0~Ek%3  
int i=stack[top--]; TsR20P@  
hI?<F^b  
pivotIndex=(i+j)/2; 2!jbaSH(+  
pivot=data[pivotIndex]; XbHcd8N T  
_Jx?m  
SortUtil.swap(data,pivotIndex,j); >q]r)~8F^  
*gBaF/C  
file://partition L*FnFRhU  
l=i-1; S-v9z:M3  
r=j; G"J6X e  
do{ ."3 J;j  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;&[0 h)  
SortUtil.swap(data,l,r); LxMOs Nv  
} jkfI,T  
while(l SortUtil.swap(data,l,r); [J:vSt  
SortUtil.swap(data,l,j); F@?QVdY1q7  
CMTy(Z8_)  
if((l-i)>THRESHOLD){ %S@XY3jZY  
stack[++top]=i; Ef7 Kx49I  
stack[++top]=l-1; 654PW9{(  
} Z3[,Xw  
if((j-l)>THRESHOLD){ D@\97t+  
stack[++top]=l+1; % 3FI>\3  
stack[++top]=j; !3Pl]S~6!  
} /wIZ '  
O1/!)E!  
} @^`-VF  
file://new InsertSort().sort(data); &\1Dy}:  
insertSort(data); M?]ObIM:5  
} } 1c5#Ym  
/** C?b Mj[$  
* @param data !(+?\+U lE  
*/ e _,_:|t  
private void insertSort(int[] data) { L9G=+T9  
int temp; 1tg   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wu s]  
} 3fBq~Q  
} `M\L 6o  
} yQ&;#`!'  
t6~|T_]  
} lJq %me;4m  
i++ F&r[  
归并排序: <Qwi 0$  
bv|v9_i  
package org.rut.util.algorithm.support; CVu'uyy  
$BNn1C8[  
import org.rut.util.algorithm.SortUtil; )Q9J,  
vn|X,1o  
/** pvcf_w`n  
* @author treeroot 1OJ:Vy}n  
* @since 2006-2-2 SUx\qz)  
* @version 1.0 *6k (xL  
*/ c?wFEADn  
public class MergeSort implements SortUtil.Sort{ Kz'W |  
ujDAs%6MZ  
/* (non-Javadoc) S,J'Z:spf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M~3(4,  
*/ MLL2V`vBT  
public void sort(int[] data) { hWuq  
int[] temp=new int[data.length]; k%c ?$n"  
mergeSort(data,temp,0,data.length-1); z#O{rwnl  
} ;9b?[G  
_*&<hAZj  
private void mergeSort(int[] data,int[] temp,int l,int r){ qB"y'UW8  
int mid=(l+r)/2; i"_JF-IbN  
if(l==r) return ; r\L:JTZ$  
mergeSort(data,temp,l,mid); 0z\=uQ0  
mergeSort(data,temp,mid+1,r); 23+>K  
for(int i=l;i<=r;i++){ A7ck-9dT/L  
temp=data; ,![C8il,  
} E6BW&Xp  
int i1=l; V GM/ed5-  
int i2=mid+1; Ik~5j(^E-  
for(int cur=l;cur<=r;cur++){ J2yq|n?2gq  
if(i1==mid+1) Cvi-4   
data[cur]=temp[i2++]; @-Gf+*GZys  
else if(i2>r) a#KxjVM  
data[cur]=temp[i1++]; nj)M$'  
else if(temp[i1] data[cur]=temp[i1++]; k98--kc5  
else +]UPY5:F  
data[cur]=temp[i2++]; A.y"R)G  
} 7!Fu.Ps >  
} R-Uj\M>  
v]vrD2L  
} .\< \J|3  
`/Z8mFs Y  
改进后的归并排序: {T.$xiR  
*FOTq'%i  
package org.rut.util.algorithm.support; 4oCn F+(  
x4fLe5xv  
import org.rut.util.algorithm.SortUtil; |1rBK.8  
'gQm%:qU3r  
/** LP.-  
* @author treeroot =]"[?a >  
* @since 2006-2-2 *:)#'cenI  
* @version 1.0 gl00$}C  
*/ _U'edK]R  
public class ImprovedMergeSort implements SortUtil.Sort { 8=t?rA  
vR#A7y @ !  
private static final int THRESHOLD = 10; Y|KX:9Y@  
5wr0+Xo  
/* sp'q=^t  
* (non-Javadoc) '(I"54W  
* &zUo",}9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {hVSVx8ZL  
*/ 'g( R4deCX  
public void sort(int[] data) { dqPJ 2j $\  
int[] temp=new int[data.length]; @4hxGk=  
mergeSort(data,temp,0,data.length-1); 7;c{lQOj}  
} &\K,kS[.r  
l{Xsh;%=  
private void mergeSort(int[] data, int[] temp, int l, int r) { '[:].?M  
int i, j, k; {.eC"  
int mid = (l + r) / 2; )Z"7^ i  
if (l == r) k' pu%nWN  
return; h&.9Q{D  
if ((mid - l) >= THRESHOLD) vk.Y2 :  
mergeSort(data, temp, l, mid); #P18vK5  
else H`B%6S /  
insertSort(data, l, mid - l + 1); :P;#Y7}Y$  
if ((r - mid) > THRESHOLD) (w@|:0t^y[  
mergeSort(data, temp, mid + 1, r); @v@'8E Q  
else Yb414K  
insertSort(data, mid + 1, r - mid); 'j>^L  
90teXxg=|  
for (i = l; i <= mid; i++) { QMHeU>  
temp = data;  m ,qU})  
} C6Dq7~{B  
for (j = 1; j <= r - mid; j++) { Vs\ )w>JF  
temp[r - j + 1] = data[j + mid]; AaKILIIQZ  
} )` '  
int a = temp[l]; $;"@;Lj%,  
int b = temp[r]; ,_P(!7Z8  
for (i = l, j = r, k = l; k <= r; k++) { ml\7JW6Rx  
if (a < b) { U#@:"v|  
data[k] = temp[i++]; }+I 8l'  
a = temp; Cg8{NNeD  
} else { 6R dfF$f  
data[k] = temp[j--]; ()3+! };  
b = temp[j]; l AE$HP'o  
} *slZ17xg  
} bAt!9uFn  
} i1C]bUXA  
I-&/]<5y  
/** Lp1wA*  
* @param data RhX 2qsva-  
* @param l p;X[_h  
* @param i <N+l"Re#]  
*/ ~"+[VE5  
private void insertSort(int[] data, int start, int len) { RSzp-sKB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); L.ndLd  
} Br1JZHgA  
} iTqv=  
} B~yD4^  
} s13Iu#  
r3p fG  
堆排序: f5mk\^  
_mA[^G=gY  
package org.rut.util.algorithm.support; r(J7&vR}h  
I{B8'n{cN  
import org.rut.util.algorithm.SortUtil; izmL8U ?t  
DCP "  
/** .E[k}{k,  
* @author treeroot ^=.|\ YM  
* @since 2006-2-2 nLdI>c9R  
* @version 1.0 -}PD0Pzg;=  
*/ gaTI:SKzc  
public class HeapSort implements SortUtil.Sort{ 'Kp|\T r  
tv\P$|LV`8  
/* (non-Javadoc) &..'7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C0KP,JS&  
*/ _pjpPSV6J  
public void sort(int[] data) { vJmE}  
MaxHeap h=new MaxHeap(); l&;#`\s!V  
h.init(data); B7N?"'$i  
for(int i=0;i h.remove(); /!jn$4fd:  
System.arraycopy(h.queue,1,data,0,data.length); +!.=M8[  
} R"=G?d)  
\HTXl]  
private static class MaxHeap{ }w"laZ*  
|]\qI  
void init(int[] data){ n8R{LjJ2@  
this.queue=new int[data.length+1]; xxiEL2"`>  
for(int i=0;i queue[++size]=data; LT:KZ|U9  
fixUp(size); .NwHr6/s*  
} GJ{]}fl  
} &d9";V"E  
DQKhR sC  
private int size=0; 6ZCt xs!  
DFqXZfjm  
private int[] queue; YX@[z 5*  
*<s|WLMG  
public int get() { 2l8jw:=H  
return queue[1]; OC"W=[Myl  
} #L BZ%%v  
]7c715@  
public void remove() { U*[/F)!  
SortUtil.swap(queue,1,size--); =,,!a/U  
fixDown(1); F9-xp7 T  
} RUSBJsMB  
file://fixdown Jr 9\j3J{  
private void fixDown(int k) { ze!7qeW  
int j; CbI[K|  
while ((j = k << 1) <= size) {  8(5}Jo+  
if (j < size %26amp;%26amp; queue[j] j++; SP5/K3t-*  
if (queue[k]>queue[j]) file://不用交换 oy#Qj3M8=  
break; W}a&L  
SortUtil.swap(queue,j,k); 9M<qk si  
k = j; co@Q   
} Fag%#jxI  
} vezX/xD?  
private void fixUp(int k) { |BF4 F5wC?  
while (k > 1) { to]1QjW-  
int j = k >> 1; BWfsk/lej  
if (queue[j]>queue[k]) }\P9$D+  
break; `NyvJt^<  
SortUtil.swap(queue,j,k); JEs?Rm1^.  
k = j; |4ONGU*`E  
} 7 45Uo'  
}  K7 U`  
IGOqV>;  
} (lTM^3 }  
I[@}+p0  
} u ;f~  
V!a\:%#^Y  
SortUtil: v; &-]ka  
'@ (WT~g  
package org.rut.util.algorithm; FF)F%o+:w  
[#M^:Q  
import org.rut.util.algorithm.support.BubbleSort; _Cj u C`7  
import org.rut.util.algorithm.support.HeapSort; +tES:3Pi  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y u8a8p|  
import org.rut.util.algorithm.support.ImprovedQuickSort; m9a(f>C  
import org.rut.util.algorithm.support.InsertSort; Qt+ K,LY  
import org.rut.util.algorithm.support.MergeSort; pg [F{T<  
import org.rut.util.algorithm.support.QuickSort; :,]V 03  
import org.rut.util.algorithm.support.SelectionSort; 7=aF-;X3jj  
import org.rut.util.algorithm.support.ShellSort; VSL6tQp  
4b,N"w{v  
/** #t>w)`bA-  
* @author treeroot jyb/aov  
* @since 2006-2-2 Q]uxZ;}aF  
* @version 1.0 p. SEW5  
*/ b$l@Z&[]  
public class SortUtil { /608P:U  
public final static int INSERT = 1; -WWa`,:  
public final static int BUBBLE = 2; Pe EC|&x  
public final static int SELECTION = 3; y9cW&rDH  
public final static int SHELL = 4; BlF>TI%2  
public final static int QUICK = 5; kXFgvIpg<  
public final static int IMPROVED_QUICK = 6; [nZ3}o  
public final static int MERGE = 7; se:]F/  
public final static int IMPROVED_MERGE = 8; EC<g7_0F  
public final static int HEAP = 9; n{s `XyH  
.z^ePZ|mV  
public static void sort(int[] data) { Uf}s6#   
sort(data, IMPROVED_QUICK); )$p<BLU  
} &^=6W3RD  
private static String[] name={ 6",S$3q  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" sgW*0o  
}; .]SE>3  
0>} FNRC  
private static Sort[] impl=new Sort[]{ xE`uFHuS}  
new InsertSort(), +F= j1*'&  
new BubbleSort(), KSe `G;{  
new SelectionSort(), t}n:!v"|+O  
new ShellSort(), Nj4=  
new QuickSort(), ,Dd )=  
new ImprovedQuickSort(), .aTu]i3l_  
new MergeSort(), \Ld/'Z;w  
new ImprovedMergeSort(), s ~c_9,JK  
new HeapSort() }q7rR:g  
}; ?"-%>y@w  
sx7;G^93  
public static String toString(int algorithm){ s~(!m. R  
return name[algorithm-1]; `L n,qiA  
} /E8{:>2  
GxjmHo  
public static void sort(int[] data, int algorithm) { 2I DN?Mw  
impl[algorithm-1].sort(data); Ldqn<wNnI  
} ' e @`HG  
H5wzzSV!:B  
public static interface Sort { 2UqLV^ZY  
public void sort(int[] data); g+'=#NS}  
} u~[=5r  
od\-o:bS  
public static void swap(int[] data, int i, int j) { }e[;~g\&  
int temp = data; KA^r,Iw  
data = data[j]; Am>^{qh9  
data[j] = temp; [H"\<"1o  
} k/'>,WE  
} |KH981  
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