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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。 E }ZJ)V7  
插入排序: RVeEkv[qp  
xp Og8u5  
package org.rut.util.algorithm.support;  }K3x  
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import org.rut.util.algorithm.SortUtil; @/ k@WhFZ  
/** 5ms""LD/  
* @author treeroot S%`0'lzzj  
* @since 2006-2-2 (T2m"Yi:  
* @version 1.0 XQS9,Hl  
*/ Zv#Ll@v  
public class InsertSort implements SortUtil.Sort{ !A%<#Gjt  
rylzcN9RM$  
/* (non-Javadoc) M}!2H*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PiA0]>  
*/ Q~T$N  
public void sort(int[] data) { {P*m;a`}  
int temp; YQY%M>F@d%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3$X'Y]5a  
} HbW0wuI  
} QcpXn4/*  
} l<);s  
A,4fEmWM  
} ){UcS/GI=  
&-;5* lg)0  
冒泡排序: ttu&@ =  
:>=\.\  
package org.rut.util.algorithm.support; Q1+dCCY#F  
v;)..X30  
import org.rut.util.algorithm.SortUtil; @9"J|}  
y:6; LZ9[  
/** _8E/) M  
* @author treeroot &%-73nYw  
* @since 2006-2-2 N ,z6y5Lu  
* @version 1.0 Dtj&W<NXo  
*/ Jkek-m  
public class BubbleSort implements SortUtil.Sort{ pxa(  
ghRVso(  
/* (non-Javadoc) F >rH^F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e2A-;4?_  
*/ ,2W8=ON  
public void sort(int[] data) { rvw)-=qR[  
int temp; `*shF9.\C  
for(int i=0;i for(int j=data.length-1;j>i;j--){ :ijAqfX  
if(data[j] SortUtil.swap(data,j,j-1); " W|%~h  
} ~sXcnxLz  
} )+6MK(<"  
} /Sh#_\x  
} y`=]T>X&x  
S;- LIv  
} ctGL-kp  
GN2Sn` ;  
选择排序: lg&t8FHa;  
&c,kQo+pA  
package org.rut.util.algorithm.support; VzVc37 Z>6  
b1( $R[  
import org.rut.util.algorithm.SortUtil; 7"C$pm6  
j}C}:\-fY  
/** g pOC`=  
* @author treeroot g?ULWeZg5  
* @since 2006-2-2 <Sr  
* @version 1.0 [)TRTxFb  
*/ .Fp4: e  
public class SelectionSort implements SortUtil.Sort { \7'+h5a  
BT"XT5@  
/* PAM}*'  
* (non-Javadoc) ^RI?ybDd  
* u`RI;KF~F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s ']Bx=  
*/ $A-J,_:T<  
public void sort(int[] data) { IqoR7ajA  
int temp; y9Usn8  
for (int i = 0; i < data.length; i++) { sc,vj'r  
int lowIndex = i; )'+8}T]xQ  
for (int j = data.length - 1; j > i; j--) { WA&!;Zq  
if (data[j] < data[lowIndex]) { #NryLE!/  
lowIndex = j; bXNk%W[n  
} ilqy /fL#  
} (:> ,u*x%  
SortUtil.swap(data,i,lowIndex); Bn &Ws  
} q1KZ5G)6GJ  
} \}|o1Xh2  
Sxh]R+Xb  
} Iepsz  
jJPGrkr  
Shell排序: 4.5|2 \[  
~S,,w1`  
package org.rut.util.algorithm.support;   #^A*  
c$yk s  
import org.rut.util.algorithm.SortUtil; CTZ8Da^  
O*FUTZd(J  
/** 7x%R:^*4  
* @author treeroot }WH&iES@P  
* @since 2006-2-2 &n8_0|gK  
* @version 1.0 d\gJ$ ~^K  
*/ m3/O.DY%0  
public class ShellSort implements SortUtil.Sort{ [UWd W  
9j6QX ~,  
/* (non-Javadoc) )O@]uY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |}di&y@-JI  
*/ MjC_ (cs  
public void sort(int[] data) { z)r =+ -  
for(int i=data.length/2;i>2;i/=2){ E;R n`oxk  
for(int j=0;j insertSort(data,j,i); /~$WUAh  
}  abfW[J  
} /Y2}a<3&0  
insertSort(data,0,1); U ^5Kz-5.  
} _ =VqrK7T  
vkEiOFU!u  
/** sW'2+|3"  
* @param data +Z !)^j  
* @param j .Z `av n  
* @param i hRD=Y<>A  
*/ U!*M*s  
private void insertSort(int[] data, int start, int inc) { _)>_{Pm  
int temp; naR0@Q"\h  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +{f:cea (1  
} @a0DT=>dT  
} (G;l x  
} U`NjPZe5^  
'9 [vDG~  
} %1xb,g KO  
zv\kPfGDK  
快速排序: AW!?"xdZ  
n%.7h3  
package org.rut.util.algorithm.support; /YMj-S_b~  
m!tbkZHQn0  
import org.rut.util.algorithm.SortUtil; b)qoh^  
Ch|jtVeuyJ  
/** f$Fhf ?'  
* @author treeroot R5 - @  
* @since 2006-2-2 P"IPcT%Ob%  
* @version 1.0 %u5L!W&  
*/ CFMo)"  
public class QuickSort implements SortUtil.Sort{ RbP6F*f  
'}Z~JYa0  
/* (non-Javadoc) sHt].gZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y[)>yq y  
*/ ?R$F)g7<  
public void sort(int[] data) { qzKdQ&vO  
quickSort(data,0,data.length-1); 2db3I:;E  
} ZQ%'`q\c  
private void quickSort(int[] data,int i,int j){  ~- _kM  
int pivotIndex=(i+j)/2; Gi?/C&1T  
file://swap V)~.~2$  
SortUtil.swap(data,pivotIndex,j); QSdHm  
v4`"1Ss,K  
int k=partition(data,i-1,j,data[j]); AQ,' 6F9  
SortUtil.swap(data,k,j); '$ =>  
if((k-i)>1) quickSort(data,i,k-1); Mh:L$f0A%O  
if((j-k)>1) quickSort(data,k+1,j); G\Cp7:j}  
lhAX;s&9  
} t\~P:"  
/** |y!=J$ $_H  
* @param data /v1Q4mq  
* @param i CY s,`  
* @param j fzb29 -  
* @return jET{Le8i  
*/ [65 `$x-  
private int partition(int[] data, int l, int r,int pivot) { ~962i#&4  
do{ ao1(]64X"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @"Fme-~  
SortUtil.swap(data,l,r); j,lT>/  
} S1Wj8P-  
while(l SortUtil.swap(data,l,r); *`ua'"="k  
return l; :8=ikwQ  
} &_dt>.  
{JZZZY!n2  
} Tc>   
.w=/+TA  
改进后的快速排序: r ~jm`y  
\E72L5nJW  
package org.rut.util.algorithm.support; PV'x+bN5  
4sF"6+%5d  
import org.rut.util.algorithm.SortUtil; 5cL83FQh  
1 d}Z(My  
/** p*4':TFuD;  
* @author treeroot :dl]h&C^  
* @since 2006-2-2 I7|Pi[e  
* @version 1.0 ~?4PBq  
*/ ]'!f28Ng-  
public class ImprovedQuickSort implements SortUtil.Sort { n$x c];j  
f9t6q*a`%  
private static int MAX_STACK_SIZE=4096; W>Y@^U&x`  
private static int THRESHOLD=10; tZ: _ag)o  
/* (non-Javadoc) ^ =bu(L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :mh_G  
*/ m4hX 'F  
public void sort(int[] data) { E4`N-3  
int[] stack=new int[MAX_STACK_SIZE]; ]/[FR5>  
m[? E  
int top=-1; |oH,   
int pivot; #%a;"w  
int pivotIndex,l,r; jaTh^L  
3oGt3 F{gZ  
stack[++top]=0; 'y;EhOwj,  
stack[++top]=data.length-1; sT3^hY7  
dpAjR  
while(top>0){ Su 586;\  
int j=stack[top--]; <Swt);  
int i=stack[top--]; $UMFNjL  
Ygm`ZA y  
pivotIndex=(i+j)/2; eJF5n#  
pivot=data[pivotIndex]; 8p^bD}lN7  
cv-PRH#  
SortUtil.swap(data,pivotIndex,j); ?]|\4]zV  
/ ;$#d}R  
file://partition {C 6=[  
l=i-1; iEVb"w0 59  
r=j; +X#vVD3"  
do{ aE`c%T):`  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _X^1IaL  
SortUtil.swap(data,l,r); Q3n,)M[N  
} q-[@$9AS  
while(l SortUtil.swap(data,l,r); .Xfq^'I[  
SortUtil.swap(data,l,j); f/ ?_  
9_q#W'/X  
if((l-i)>THRESHOLD){ (Mo*^pVr  
stack[++top]=i; K SbKEA  
stack[++top]=l-1; y6ECdVF  
} 7,U=Qe;  
if((j-l)>THRESHOLD){ prC;L*~8  
stack[++top]=l+1; 0[R L>;D:  
stack[++top]=j; Ye"o6_U "  
} Eza`Z` ^el  
Sz%t JD..  
} **w!CaqvY  
file://new InsertSort().sort(data); (yu/l 6[  
insertSort(data); ' KWyx  
} ;+W# 5<i  
/** u!!Y=!y*<  
* @param data #X%~B'  
*/ bx#>BK!  
private void insertSort(int[] data) { F|d\k Q  
int temp; +DW~BS3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #ZJ _T`l  
} h%o%fH&F!  
} 3AHlSX  
} G! ]k#.^A,  
K#%&0D!  
} <Y*+|T+&d  
:=}US}H$  
归并排序: `>gd&u  
j>*R]mr6  
package org.rut.util.algorithm.support; k52/w)Ro,$  
zcel|oz)  
import org.rut.util.algorithm.SortUtil; @G BxL*e  
Sc>,lIM  
/** KK1 gNC4R  
* @author treeroot bV(Y`g  
* @since 2006-2-2 ujDd1Bxf?  
* @version 1.0 NO~*T?&  
*/ T_i:}ul  
public class MergeSort implements SortUtil.Sort{ $*SW8'],`  
>sfRI]OG  
/* (non-Javadoc) whmdcVh.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n(b(yXYm]  
*/ 4~k\j  
public void sort(int[] data) { 6DM$g=/ '  
int[] temp=new int[data.length]; 931bA&SL=/  
mergeSort(data,temp,0,data.length-1); aH 4c02s$  
} `Bo*{}E  
33o9Yg|J~  
private void mergeSort(int[] data,int[] temp,int l,int r){ n)L*  
int mid=(l+r)/2; X>d"]GD  
if(l==r) return ; Z8# (kmBdB  
mergeSort(data,temp,l,mid); 1e(E:_t  
mergeSort(data,temp,mid+1,r); P?8GV%0$  
for(int i=l;i<=r;i++){ H;?{BV  
temp=data; 1 9&<|qTz  
} j.C`U(n}`  
int i1=l; :9O#ObFR  
int i2=mid+1; Uo-)pFN^  
for(int cur=l;cur<=r;cur++){ 7R`M,u~f2^  
if(i1==mid+1) ql<i]Y  
data[cur]=temp[i2++]; M=%l}FSTw(  
else if(i2>r) t0/p]=+.p/  
data[cur]=temp[i1++]; Te.Y#lCT$  
else if(temp[i1] data[cur]=temp[i1++]; UM!ENI|  
else VbJiZw(aR  
data[cur]=temp[i2++]; CUO+9X-<8  
} EqyeJq .  
} K-e9>fmB#  
!Nu<xq@!  
} ?p9VO.^5  
fdxLAC  
改进后的归并排序: 1QqYQafA  
RS"H8P 4W  
package org.rut.util.algorithm.support; e>7]w,*|  
u}>#Eb  
import org.rut.util.algorithm.SortUtil; FYOD Upn  
bBu,#Mc  
/**  +EFgE1w  
* @author treeroot _wC3kAO  
* @since 2006-2-2 ?Eg(Gu.J  
* @version 1.0 (hTCK8HK  
*/ x4g3 rmp  
public class ImprovedMergeSort implements SortUtil.Sort { NS9B[*"Jl  
wHsYF`  
private static final int THRESHOLD = 10; <:(6EKJAq}  
dA-2%uJ  
/* nIAx2dh?  
* (non-Javadoc) iDN;m`a  
* m$`RcwO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Se?sHC>  
*/ fXXr+Mor  
public void sort(int[] data) { ji1viv  
int[] temp=new int[data.length]; YsG%6&zEq  
mergeSort(data,temp,0,data.length-1); Scp7X7{N  
} /,1D)0  
5j:0Yt  
private void mergeSort(int[] data, int[] temp, int l, int r) { -#0qV:D  
int i, j, k; tna .52*/  
int mid = (l + r) / 2; ]p*l%(dhY  
if (l == r) V\6=ySx  
return; T#M,~lD  
if ((mid - l) >= THRESHOLD) rW0kA1=E  
mergeSort(data, temp, l, mid); `k OD[*  
else [r3!\HI7x  
insertSort(data, l, mid - l + 1); -d8TD*^  
if ((r - mid) > THRESHOLD) @_U;9)  
mergeSort(data, temp, mid + 1, r); ,^?^ dB  
else |s)Rxq){"V  
insertSort(data, mid + 1, r - mid); L>MLi3{  
,RE\$~`w  
for (i = l; i <= mid; i++) { yN~dU0.G6!  
temp = data; B,M(@5wz  
} UV5Ie!\nm  
for (j = 1; j <= r - mid; j++) { 1lq(PGX)  
temp[r - j + 1] = data[j + mid]; %F\?R[^5  
} zBo1P(kek  
int a = temp[l]; f _[<L  
int b = temp[r]; q:l>O5  
for (i = l, j = r, k = l; k <= r; k++) { L/wD7/ODr  
if (a < b) { e@c0WlWa  
data[k] = temp[i++]; \x)n>{3C  
a = temp; M54j@_81pX  
} else { H:!7:  
data[k] = temp[j--]; 6726ac{xz  
b = temp[j]; cS>e?  
} q+P|l5_ t  
} aT_&x@x  
} 8S>&WR%jH]  
([ jF4/  
/** `n$I]_}/%  
* @param data :/y1yM  
* @param l 7+]=-  
* @param i 9U{a{~b  
*/ D-8O+.@  
private void insertSort(int[] data, int start, int len) { %TX@I$Ba  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g$HwxA9Gp/  
} .}'qUPNR  
} &F\?  
} Em?d*z  
} }xBc0g r  
}tsYJlh5  
堆排序: "u6`m?  
y|CP;:f;  
package org.rut.util.algorithm.support; EPS={w$'s  
W.z;B<  
import org.rut.util.algorithm.SortUtil; lCAIK  
yMyE s8  
/** 7G.#O}).b  
* @author treeroot *&?c(JU;<  
* @since 2006-2-2 n,=VQ Ou  
* @version 1.0 I([!]z  
*/ k:JrHBKv\  
public class HeapSort implements SortUtil.Sort{ k9$K}  
Mzsfo;kk+  
/* (non-Javadoc) =3q/F7-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mu?Eco`~  
*/ )p T?/ J  
public void sort(int[] data) { rrQQZ5fhb  
MaxHeap h=new MaxHeap(); 9UKp?SIF  
h.init(data); 3BB%Z 6F  
for(int i=0;i h.remove(); D!.[q-<  
System.arraycopy(h.queue,1,data,0,data.length); ()K " c#  
} dlJbI}-v=  
)_mr! z(S  
private static class MaxHeap{ @Gx.q&H  
1c<=A!"{  
void init(int[] data){ Atflf2K  
this.queue=new int[data.length+1]; /V8}eZ97  
for(int i=0;i queue[++size]=data; \zieyE  
fixUp(size); 8#(Q_  
} V+Cwzc^j  
} 7:9.&W/KE  
L!=4N!j  
private int size=0; _7IKzUn9g[  
)N=NR2xBZ  
private int[] queue; D<8HZ%o  
AK\$i$@6  
public int get() { +|bmT  
return queue[1]; (7XCA,KTGI  
} t<~$  
D|rFu  
public void remove() { dY@WI[yog  
SortUtil.swap(queue,1,size--); a["2VY6Eq@  
fixDown(1); &krwf ]|  
} 43={Xy   
file://fixdown rA2 g&  
private void fixDown(int k) { {.Z}5K  
int j; bhkUKxd  
while ((j = k << 1) <= size) { SG-'R1 J  
if (j < size %26amp;%26amp; queue[j] j++; }:u~K;O87  
if (queue[k]>queue[j]) file://不用交换 FL(6?8zK  
break; (S xR`QP?,  
SortUtil.swap(queue,j,k); Mu{;vf|j  
k = j; Nc+,&R13m  
} o4*+T8[|5  
} 58%#DX34M  
private void fixUp(int k) { S:TgFt0  
while (k > 1) { S/Fkw4%  
int j = k >> 1; (>`5z(X  
if (queue[j]>queue[k])  `)GrwfC  
break; 2Yp7  
SortUtil.swap(queue,j,k); {]E+~%Va  
k = j; e&>;*$)  
} )K,F]fc+O  
} H2 $GIY  
%Eb%V($  
} i/~1F_  
Z9575CI<  
} 7<%<Ff@^)O  
U f|> (C  
SortUtil: .C2TQ:B,.  
h~(G$':^  
package org.rut.util.algorithm; krsYog(^z  
M7ers|&{  
import org.rut.util.algorithm.support.BubbleSort; 0PU8 #2pR  
import org.rut.util.algorithm.support.HeapSort; UlAzJO6"  
import org.rut.util.algorithm.support.ImprovedMergeSort; qZ}P*+`Q  
import org.rut.util.algorithm.support.ImprovedQuickSort; deM7fN4lTi  
import org.rut.util.algorithm.support.InsertSort; aYuD>rD  
import org.rut.util.algorithm.support.MergeSort; %z#f.Ql  
import org.rut.util.algorithm.support.QuickSort; oqLfesV~  
import org.rut.util.algorithm.support.SelectionSort; -RS7h  
import org.rut.util.algorithm.support.ShellSort; OCZ[D{i9@  
x9x E&  
/** 87:!C5e}  
* @author treeroot 5B&;uY  
* @since 2006-2-2 C?i >.t  
* @version 1.0 D\[h:8k  
*/ v^zu:Z*  
public class SortUtil { oP!;\a( SL  
public final static int INSERT = 1; -O&CI)`;B  
public final static int BUBBLE = 2; E2cB U{x  
public final static int SELECTION = 3; oS7(s  
public final static int SHELL = 4; \3'9Uz,OC  
public final static int QUICK = 5; aX~%5 mF  
public final static int IMPROVED_QUICK = 6; AX= 1b,s  
public final static int MERGE = 7; Wx~k&[&E  
public final static int IMPROVED_MERGE = 8; <{2e#Y  
public final static int HEAP = 9; !-N6l6N  
X66VU  
public static void sort(int[] data) { ]d a^xWK  
sort(data, IMPROVED_QUICK); INkD=tX  
} ?Y:8eD"*  
private static String[] name={ zN{K5<7o  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \0mb 3Q'  
}; c>/. ;p  
~v'3"k6  
private static Sort[] impl=new Sort[]{ ' v\L @"  
new InsertSort(), 7zHh@ B:]  
new BubbleSort(), jCrpL~tWT  
new SelectionSort(), H|ER  
new ShellSort(), srYJp^sC  
new QuickSort(), ^bc;[x&N  
new ImprovedQuickSort(), c%[#~;E  
new MergeSort(), KN?6;G{  
new ImprovedMergeSort(),  ;zYqsS  
new HeapSort() a)S+8uU  
}; )13dn]o=2  
D K=cVpN%s  
public static String toString(int algorithm){ BCe|is0  
return name[algorithm-1]; &Ch#-CUE/  
} jL^](J>  
UN%Vg:=  
public static void sort(int[] data, int algorithm) { ^S)cjH`P  
impl[algorithm-1].sort(data); Pt&(npjN,  
} 4'6`Ll|iq  
b8%C *r7  
public static interface Sort { ^)?d6nI  
public void sort(int[] data); #7ov#_2Jd  
} jMbC Y07v  
B9T!j]'  
public static void swap(int[] data, int i, int j) { gj(l&F *@  
int temp = data; t3kh]2t  
data = data[j]; OjL"0imN6  
data[j] = temp; K%~Kg9  
} @ F"ShT0  
}  7qdl,z  
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