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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。 gtH^'vFZ  
插入排序: @XG1d)sE  
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package org.rut.util.algorithm.support; {s@!N  
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import org.rut.util.algorithm.SortUtil; Q#yHH]U)X  
/** 1^o})9  
* @author treeroot 2n>mISy+  
* @since 2006-2-2 !jl^__ .DR  
* @version 1.0 fV4eGIR&  
*/ P\ P=1NM  
public class InsertSort implements SortUtil.Sort{ xKL(:ePS  
]u|FcwWc3  
/* (non-Javadoc) I*U7YqDC9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xb[yy}>"L  
*/ ?W ^`Fa)]o  
public void sort(int[] data) { MMjewGxe  
int temp; ):G+*3yb  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /|U;_F Pmc  
} x3'ANw6E  
} 2 Ax(q&`9  
} )xc1Lsrr9  
axnVAh|}S  
} ]NaH *\q  
JT}"CuC  
冒泡排序: x!I@cP#O  
){/n7*#Th%  
package org.rut.util.algorithm.support; Z5rL.a&  
^'N!k{x  
import org.rut.util.algorithm.SortUtil; MA tF,  
wIRU!lIF9  
/** dW/(#KP/+  
* @author treeroot ^Mm%`B7W  
* @since 2006-2-2 _Rj bm'kC  
* @version 1.0 9ox5,7ZQ  
*/ S9:ij1  
public class BubbleSort implements SortUtil.Sort{ 6@0? ~  
IH*G7;  
/* (non-Javadoc) te;bn4~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {>9<H]cSP  
*/ w,6gnO  
public void sort(int[] data) { Ld:-S,2  
int temp; a$uD oi  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0RdW.rZJ  
if(data[j] SortUtil.swap(data,j,j-1); 7KC2%s#7  
} @?tR-L<u  
} (Z@- e^R  
} -{L 7%j|R  
} r8y,$Mv<)0  
'h&>K,U?5  
} f 4K)Z e  
}5" Rj<  
选择排序: ]\ZJaU80I~  
I7XM2xM  
package org.rut.util.algorithm.support; toG- Dz&  
p&XuNk  
import org.rut.util.algorithm.SortUtil; ,UVd+rY}  
vG}\Amx+  
/** T;kh+ i  
* @author treeroot Ktuv a3=>N  
* @since 2006-2-2 +;@R&Y  
* @version 1.0 ak}k e  
*/ h _c11#  
public class SelectionSort implements SortUtil.Sort { j*VYUM@y1\  
IL&R&8'  
/* s*CBYzOm  
* (non-Javadoc) Ki :98a$  
* &xj,.;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5 a&a-(  
*/ 9Z2aFW9  
public void sort(int[] data) { =;8q`  
int temp; H-& ktQWK3  
for (int i = 0; i < data.length; i++) { xjDaA U,  
int lowIndex = i; q/7T-"q/G  
for (int j = data.length - 1; j > i; j--) { :d<F7`k H  
if (data[j] < data[lowIndex]) { yF XPY=EQ  
lowIndex = j; t]t(/x#  
} 'Um\m  
} <ihJp^kgQ  
SortUtil.swap(data,i,lowIndex); BW`Tw^j  
} coXm*X>z  
} A8nf"mRD:  
YTe8C9eO  
} mk-L3H1@J3  
w(%$~]h  
Shell排序: 0a$hK9BH  
ewYk>  
package org.rut.util.algorithm.support; KmF+3g~#s  
n?^X/R.22  
import org.rut.util.algorithm.SortUtil;  vO;:~  
"8[Vb#=*e  
/** zW95qxXg  
* @author treeroot 65c#he[_Y  
* @since 2006-2-2 fxD|_  
* @version 1.0 Qz A)HDQ  
*/ AdF[>Wv  
public class ShellSort implements SortUtil.Sort{ (aq^\#9btO  
XKBQH(  
/* (non-Javadoc) L#T`h}1Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) scEE$:  
*/ 6~Zq  
public void sort(int[] data) { ~:4Mf/Ca  
for(int i=data.length/2;i>2;i/=2){ ]\=M$:,RZ  
for(int j=0;j insertSort(data,j,i); 8{.:$T  
} {M0pq3SL*t  
} uc;,JX!bN  
insertSort(data,0,1); }PzYt~Z`@  
} =H^^AG\}  
J {#C<C  
/** W-"FRTI4  
* @param data P4"EvdV7  
* @param j `{@?O%UB  
* @param i TSd;L u%hr  
*/ !B*d,_9 c  
private void insertSort(int[] data, int start, int inc) { :B_ itl0{e  
int temp; !8%{(;(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); aQfrDM<*XS  
} ""F' Nzy  
} h,Tsb:Q"M  
} 1QDAfRx  
wW;!L =j  
} )Chx,pcx<  
/aMeKM[L`  
快速排序: 8!dA1]2;  
!P* z=  
package org.rut.util.algorithm.support; e,0Gc-X[B  
dzc.s8T(0  
import org.rut.util.algorithm.SortUtil; ^sVB:?  
F;dUqXUu  
/** aSNTm8SYX  
* @author treeroot |(1z ?Spbe  
* @since 2006-2-2 J3=^ +/g  
* @version 1.0 @GR|co  
*/ XS"lR |  
public class QuickSort implements SortUtil.Sort{ yu62$ d  
c_bIadE{  
/* (non-Javadoc) (A8X|Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `_&7-;)i*\  
*/ !xh.S#B  
public void sort(int[] data) { V,Br|r$l(  
quickSort(data,0,data.length-1); 4qEeN-6h  
} GCPSe A~cx  
private void quickSort(int[] data,int i,int j){ [VwoZX:  
int pivotIndex=(i+j)/2; (%EhkTb  
file://swap IE9A _u*  
SortUtil.swap(data,pivotIndex,j); i(XqoR-x  
7L&=z$U@m  
int k=partition(data,i-1,j,data[j]); G8oOFBQD  
SortUtil.swap(data,k,j); {oN7I'>  
if((k-i)>1) quickSort(data,i,k-1); i50^%,  
if((j-k)>1) quickSort(data,k+1,j); 8MPXrc,9-  
{e8.E<f-  
} +3D3[.n  
/** s4c2  
* @param data 7w{>bYP  
* @param i PYz^9Ud 6g  
* @param j ra k@oW]  
* @return kC)ye"r  
*/ VDq?,4Kb  
private int partition(int[] data, int l, int r,int pivot) { 7*r7Q'  
do{ $n?@zd@53  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LHz-/0 [  
SortUtil.swap(data,l,r); HGpj(U:`c  
} "(rG5z3P  
while(l SortUtil.swap(data,l,r); q\g|K3V)  
return l; <ibEo98  
} L?e N(L  
[MKL>\U  
} m[FH>  
Yl#r9TM  
改进后的快速排序: EBN'u&zX  
@9^ozgg  
package org.rut.util.algorithm.support; mmG+"g$|  
^SKuX?f\  
import org.rut.util.algorithm.SortUtil; HW(cA}$  
Q<V?rPAcx  
/**  *w538Vb  
* @author treeroot P*6B+8h"5g  
* @since 2006-2-2 D?3^>h  
* @version 1.0 Yvu!Q  
*/ fWywegh  
public class ImprovedQuickSort implements SortUtil.Sort { 0x\bDWZ_  
T Prqb  
private static int MAX_STACK_SIZE=4096; Gt^Fj&^  
private static int THRESHOLD=10; OXuBtW*,z+  
/* (non-Javadoc) Wo@0yF@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o'Byuct  
*/ UmSy p\i  
public void sort(int[] data) { U1t7XZ3e  
int[] stack=new int[MAX_STACK_SIZE]; g9`z]qGWS:  
uMToVk`Uv  
int top=-1; J ;=~QYn[  
int pivot; W7lR 54%|  
int pivotIndex,l,r; ~I%m[fQ S  
[' ~B &  
stack[++top]=0; V3NQij(  
stack[++top]=data.length-1; #,1Kum bG3  
$Aw"?&d"  
while(top>0){ E hROd  
int j=stack[top--]; r_f?H@v  
int i=stack[top--]; `r:n[N=Y&  
{f\/2k3  
pivotIndex=(i+j)/2; kqfO3{-;{:  
pivot=data[pivotIndex]; tB_GEt2M  
f\}fUg 2  
SortUtil.swap(data,pivotIndex,j); "+iPeRF!hU  
"RH pj3 si  
file://partition -# [=1 Y  
l=i-1; Y9)uy 8c  
r=j; %OeA"#  
do{ db%o3>>e  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]4m;NId  
SortUtil.swap(data,l,r); ;x*_h  
} ~5[#c27E9  
while(l SortUtil.swap(data,l,r); 9H9 P'lx9  
SortUtil.swap(data,l,j); +pcpb)VL  
=1noT)gC R  
if((l-i)>THRESHOLD){ j>(O1z 7  
stack[++top]=i; +,&8U&~`  
stack[++top]=l-1; 0yhC_mI  
} k[0Gz  
if((j-l)>THRESHOLD){ |^^'GZ%a  
stack[++top]=l+1; _H9.A I  
stack[++top]=j; E({W`b~_f  
} =ILE/ pC-|  
*"\QR>n   
} ]uN}n;`12  
file://new InsertSort().sort(data); r%*,pN7O  
insertSort(data); LE!xj 0  
} Tji G!W8  
/** UMN3.-4K#  
* @param data YL_M=h>P  
*/ |N%?7PZ(  
private void insertSort(int[] data) { ,iKL 68  
int temp; ]o18oY(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8LI,'XZ  
} 1PD{m{  
} t'e1r&^:r~  
} 038|>l-9[  
:C*7 DS  
} kcg{z8cd'r  
zO BLF|L=  
归并排序: j\kT H  
`52+.*J+%  
package org.rut.util.algorithm.support; +yvtd]D$2W  
!7C[\No(  
import org.rut.util.algorithm.SortUtil; R_IUuz$e  
uURm6mVt9:  
/** c]SXcA;Pmv  
* @author treeroot z>rl7&[@  
* @since 2006-2-2 9K]Li\  
* @version 1.0 *E*= ;BG  
*/ 'aYUF&GG  
public class MergeSort implements SortUtil.Sort{ _Mi`]VSq9  
]}t6V]`Q  
/* (non-Javadoc) $#VEC0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .E H&GX  
*/ 3 q1LIM  
public void sort(int[] data) { l`S2bb6uMR  
int[] temp=new int[data.length]; #aX+?z\4  
mergeSort(data,temp,0,data.length-1); )k)HQcfjD  
} }H^h ~E  
h0m+u}oP_H  
private void mergeSort(int[] data,int[] temp,int l,int r){ z'=8U@P'#  
int mid=(l+r)/2; {k CCpU  
if(l==r) return ; a_jw4"Sb  
mergeSort(data,temp,l,mid);  .dA_}  
mergeSort(data,temp,mid+1,r); ~m:oJ+:O  
for(int i=l;i<=r;i++){ (}Q(Ux@X  
temp=data; _ebo  
} 0,b.;r  
int i1=l; e"7<&% Oq  
int i2=mid+1; T_\Nvzb}  
for(int cur=l;cur<=r;cur++){ ;gS)o#v0  
if(i1==mid+1) 99<]~,t=5  
data[cur]=temp[i2++]; Gw!VPFV>W  
else if(i2>r) sIUhk7Cd8  
data[cur]=temp[i1++]; w ]8+ OP  
else if(temp[i1] data[cur]=temp[i1++]; oT7 6)O  
else <v&L90+s\;  
data[cur]=temp[i2++]; HQtR;[1  
} 52X[ {  
} dY=]ES} `  
o#GZ|9IL  
} Qt-7jmZw1  
f4%Z~3P  
改进后的归并排序: Z^tTR]u\$  
*Ubsa9'fS  
package org.rut.util.algorithm.support; 0R2KI,WI  
WC& V9Yk  
import org.rut.util.algorithm.SortUtil; <{ZDD]UGs0  
ltQo_k  
/** p.wed% O.  
* @author treeroot bwrM%BL  
* @since 2006-2-2 #)}K,FDd  
* @version 1.0 m*bTELb  
*/ / thFs4  
public class ImprovedMergeSort implements SortUtil.Sort { 1SAO6Wh  
rra|}l4Y  
private static final int THRESHOLD = 10; EM2=g9y  
#VM+.75o1  
/* %mqep5n(  
* (non-Javadoc) ]>v C.iYp  
* wh Hp}r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %#go9H(K  
*/ p{@jM  
public void sort(int[] data) { FIMM\W  
int[] temp=new int[data.length]; +56N}MAs  
mergeSort(data,temp,0,data.length-1); W;Y"J_  
} ;$nCQ/ /  
v2Ft=_*G|  
private void mergeSort(int[] data, int[] temp, int l, int r) { >H r&F nh+  
int i, j, k; ! 3 ;;6  
int mid = (l + r) / 2; S_eD1iY2-  
if (l == r) PJfADB7Y  
return; d/"%fpp^0G  
if ((mid - l) >= THRESHOLD) XE#a#  
mergeSort(data, temp, l, mid); $^TxLv  
else e w%rc.;  
insertSort(data, l, mid - l + 1);  !n`9V^`  
if ((r - mid) > THRESHOLD) 7MbV|gM}  
mergeSort(data, temp, mid + 1, r); i C)+5L#'  
else "]SA4Ud^  
insertSort(data, mid + 1, r - mid); dI(1L~  
2v$\mL  
for (i = l; i <= mid; i++) { }H Ct=W`  
temp = data; FOyANN'  
} iv!;gMco  
for (j = 1; j <= r - mid; j++) {  .u3;  
temp[r - j + 1] = data[j + mid]; dz6&TdEl  
} 1La?x'{2MP  
int a = temp[l]; w,T-vf  
int b = temp[r]; T^ )\  
for (i = l, j = r, k = l; k <= r; k++) { 49o/S2b4z  
if (a < b) { i}L*PCP  
data[k] = temp[i++]; u5.zckV  
a = temp; M!`&Z9N  
} else { 2^X<n{0N)  
data[k] = temp[j--]; @?n~v^  
b = temp[j]; x'v-]C(@  
} xeB-fy)5+  
} lyS`X  
} jX7;hQ+P  
79z/(T +  
/** 6Z@?W  
* @param data :IX_|8e ^  
* @param l z8dBfA<z  
* @param i kp-`_sDg  
*/ /[qLf:rGI  
private void insertSort(int[] data, int start, int len) { I]z4}#+cX  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _<6E>"*m  
} v =_Ds<6n  
} a"{b}UP  
} 6{w'q&LYcE  
} I.gF38Mx  
*`40B6dEr  
堆排序: 3V]08  
)b~+\xL5J  
package org.rut.util.algorithm.support; ~bq w!rz  
+3k.xP?QS  
import org.rut.util.algorithm.SortUtil; k5|GN Y6a  
{t*CSI  
/** $3S`A]xO  
* @author treeroot 9T\\hM)k  
* @since 2006-2-2 !S'!oinV  
* @version 1.0 J'%W_?wZ  
*/ z:8ieJ)C  
public class HeapSort implements SortUtil.Sort{ o?d`o$  
L@S1C=-/  
/* (non-Javadoc) t~|`RMn"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @d n& M9Z  
*/ BS2'BS8  
public void sort(int[] data) { 5`6U:MDq  
MaxHeap h=new MaxHeap(); gL &)l!2Y  
h.init(data);  e**5_L  
for(int i=0;i h.remove(); B2:GGZ|jS  
System.arraycopy(h.queue,1,data,0,data.length); q26 qY5D  
} u"F{cA!B  
3fUiYI|&7  
private static class MaxHeap{ !iL6/  
y[/:?O}g4  
void init(int[] data){ <OrQbrWQa  
this.queue=new int[data.length+1]; fRwr}n'  
for(int i=0;i queue[++size]=data; XaaR>HljJ  
fixUp(size); Rw<O%i5/d  
} 4,&f#=Y  
} 1*f/Y9 Z  
?jsgBol  
private int size=0; JF'<""  
PB)vE  
private int[] queue; I  :8s3;  
/ <+F/R'=O  
public int get() { k_nQmU>  
return queue[1]; /GF"D5  
} z%nplG'~|  
KuF>2KX~Y  
public void remove() { lSy_cItF  
SortUtil.swap(queue,1,size--); " eS-i@  
fixDown(1); Z?qc4Cg  
} 9 RC:-d;;_  
file://fixdown F jW%M;H  
private void fixDown(int k) { :|-^et]a8  
int j; 7HJH9@8V  
while ((j = k << 1) <= size) { \0)2 u[7  
if (j < size %26amp;%26amp; queue[j] j++; }+giQw4  
if (queue[k]>queue[j]) file://不用交换 ;<=z^1X9  
break; 1I%niQv5t  
SortUtil.swap(queue,j,k); d>0 j!+s  
k = j; HP=5 a.  
} YXg^t$  
} !{!(yP_  
private void fixUp(int k) { ?z3|^oU~d  
while (k > 1) { U^Iq]L  
int j = k >> 1; Y2|c;1~5$  
if (queue[j]>queue[k]) sfp.>bMj  
break; pS8`OBenA  
SortUtil.swap(queue,j,k); aNgJm~K0P  
k = j; L?(m5u~b  
} wS [k}  
} 1i#U&  
M8VsU*aU  
} /px`FuJI(  
wsj5;(f+  
} )o;n2T#O  
FX+^S?x.  
SortUtil: -h2 1  
qxHsmGV  
package org.rut.util.algorithm; -3SRGr  
GXR7Ug}k  
import org.rut.util.algorithm.support.BubbleSort; \,G19o}`Es  
import org.rut.util.algorithm.support.HeapSort; b(A;mt#N  
import org.rut.util.algorithm.support.ImprovedMergeSort; ^oEaE#I  
import org.rut.util.algorithm.support.ImprovedQuickSort; ~g *`E!2  
import org.rut.util.algorithm.support.InsertSort; /+m7J"Km  
import org.rut.util.algorithm.support.MergeSort; @9g!5dcT  
import org.rut.util.algorithm.support.QuickSort; ^t[br6G  
import org.rut.util.algorithm.support.SelectionSort; .VkLF6  
import org.rut.util.algorithm.support.ShellSort; zc1~ q  
f.RwV+lq  
/** 85](,YYz  
* @author treeroot ze uSk| O  
* @since 2006-2-2 h[]3#  
* @version 1.0 uvA2`%T/  
*/ $KmE9Se6,  
public class SortUtil { nz`"f,  
public final static int INSERT = 1; D[(T--LLT  
public final static int BUBBLE = 2; C7!=LiK}  
public final static int SELECTION = 3; ;_1 >nXh  
public final static int SHELL = 4; o2^?D`Jr  
public final static int QUICK = 5; tp b(.`G  
public final static int IMPROVED_QUICK = 6; c#pVN](?  
public final static int MERGE = 7; '~76Y9mv  
public final static int IMPROVED_MERGE = 8; TzrU |D?  
public final static int HEAP = 9; yjucR Fl  
9-?kamA  
public static void sort(int[] data) { y9Q"3LLic`  
sort(data, IMPROVED_QUICK); Rp.FG   
} 9z(h8H  
private static String[] name={ m A|"  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" tHo/Vly6Z  
}; (z'!'?v;  
Ec['k&*7,  
private static Sort[] impl=new Sort[]{ 8;P_KRaE  
new InsertSort(), p+R8Mo;I  
new BubbleSort(), I`}x9t  
new SelectionSort(), ~wd~57i@  
new ShellSort(), R(HW0@R@w  
new QuickSort(), po+ 1  
new ImprovedQuickSort(), |y2cI,&   
new MergeSort(), yGPi9j{QXq  
new ImprovedMergeSort(), +,}CuF  
new HeapSort() CYC6:g|)  
}; WR>2t&;E  
eC-nV)]I9  
public static String toString(int algorithm){ sJYs{Wm  
return name[algorithm-1]; /J'dG%  
} A\<WnG>xjP  
*!+?%e{;b  
public static void sort(int[] data, int algorithm) { 0}aw9g  
impl[algorithm-1].sort(data); +luW=j0V  
} "O{:jfq  
w5}2$r  
public static interface Sort { _:9-x;0H2  
public void sort(int[] data); "zN]gz=OV>  
} )IZ~!N|-w  
vM2\tL@"  
public static void swap(int[] data, int i, int j) { JY@x.?N5$  
int temp = data; \JEI+A PY*  
data = data[j]; O:G-I$F|  
data[j] = temp; {~:F1J~=  
} VUGVIy.  
} 5>[ j^g+@  
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