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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。 fdH'z:Xao  
插入排序: r;6YCI=z  
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package org.rut.util.algorithm.support; W-ND<=:Up  
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import org.rut.util.algorithm.SortUtil; 7Hkf7\JY  
/** Xi`U`7?D(=  
* @author treeroot [@FeRIu8  
* @since 2006-2-2 ^CZ|ci6bX  
* @version 1.0 #y9K-}u  
*/ ^[\53\R~  
public class InsertSort implements SortUtil.Sort{ Ew,wNR`  
[,A'  
/* (non-Javadoc) m"m;(T{ v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h}:5hi Jw  
*/ {R8P $  
public void sort(int[] data) { jeuNTDjeL  
int temp; .STf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Nwu Be:"@  
} xg5@;p  
} au}0PnA;  
} u$/2XO  
ib=^ tK  
} fF]&{b~wk  
 yURh4@  
冒泡排序: c"&!=@  
i.dAL)V  
package org.rut.util.algorithm.support; P;91C'T-x  
]}Hv,a   
import org.rut.util.algorithm.SortUtil; ^d $e^cU  
U &k 3  
/** Pc ?G^ Xol  
* @author treeroot F1[ [fH  
* @since 2006-2-2 3\l9Sf=M|  
* @version 1.0 ]~ 8N  
*/ <.B > LU  
public class BubbleSort implements SortUtil.Sort{ mt]YY<l  
xcRrI|?eC  
/* (non-Javadoc) Jz8#88cY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j\L$dPZ  
*/ #w?%&,Kp  
public void sort(int[] data) { z)y(31K<1  
int temp; ph'SS=!.  
for(int i=0;i for(int j=data.length-1;j>i;j--){ a|{<#<6n(  
if(data[j] SortUtil.swap(data,j,j-1); k.R/X  
} ZZJ"Ny.2  
} YZtA:>;p  
} CpdY)SMSL  
} 5<8>G?Y  
f2e$BA  
} r|BKp,u9  
{[y"]_B4  
选择排序: w3|.4hS  
!Kqj&y5  
package org.rut.util.algorithm.support; E1Aa2  
_~&v s<  
import org.rut.util.algorithm.SortUtil; en6AAr:U}  
{ZI6!zh'  
/** NbMH@6%E  
* @author treeroot %.gjBI=  
* @since 2006-2-2 7n/I'r  
* @version 1.0 g#nsA(_L  
*/ JM9Q]#'t  
public class SelectionSort implements SortUtil.Sort { -@?>nLQb  
bN %MT#X  
/* ) G&3V  
* (non-Javadoc) UdgI<a~`k6  
* Uy'ZL(2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) " yl"A4p S  
*/ `X03Q[:q"[  
public void sort(int[] data) { uXa}<=O  
int temp; R,Uy3N  
for (int i = 0; i < data.length; i++) { @!HMd{r  
int lowIndex = i; w|*G`~l09  
for (int j = data.length - 1; j > i; j--) { I,Y^_(JW  
if (data[j] < data[lowIndex]) { 4tu>~ vOE  
lowIndex = j; FOyfk$  
} |L-juT X9  
} (D3m5fO  
SortUtil.swap(data,i,lowIndex);  .5r0%  
} T1 .@Tbbt  
} K4L#%KUPW  
rxA)&  
} NGGd6V%'-  
!Bbwl-e`  
Shell排序: PEhLzZX+  
bvvx(?!  
package org.rut.util.algorithm.support; p tfADG  
itMc!bUQ  
import org.rut.util.algorithm.SortUtil; G2k71{jK  
8j +;Xlh  
/** 0n^j 50Yq  
* @author treeroot J=bOw//  
* @since 2006-2-2 WuXRL}!\,  
* @version 1.0 mw.aavB  
*/ @D{[Hj`<  
public class ShellSort implements SortUtil.Sort{ !-Q!/?  
{D.0_=y~2  
/* (non-Javadoc) 45JLx?rN_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +@v} (  
*/ 2xm?,p`  
public void sort(int[] data) { d u )G)~  
for(int i=data.length/2;i>2;i/=2){ ?%n9g)>Yej  
for(int j=0;j insertSort(data,j,i); pDN,(Ip  
} #>NZN1  
} t $%}*@x7  
insertSort(data,0,1); GUZi }a|=  
} ?E+XD'~  
;!Bkk9r"H  
/** 5mBk[{  
* @param data CBHWMetJ*  
* @param j @isqFKjph  
* @param i ew~FN  
*/ c(JO;=,@9  
private void insertSort(int[] data, int start, int inc) { SX8%F:<.  
int temp; M" \y2   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); n-WvIy  
} +g30frg+Gl  
} 5lY9  
} KwyXM9h6=  
M,lu)~H  
} y5 +&P  
-v&srd^  
快速排序: V!!'S h  
_Y~?.hs^  
package org.rut.util.algorithm.support; v:b%G?o  
|9JYg7<  
import org.rut.util.algorithm.SortUtil; I<#kw)W!  
4K% YS  
/** "fwuvT 1  
* @author treeroot <VPtbM@(m  
* @since 2006-2-2 1yf&ck1R  
* @version 1.0 H[oi? {L  
*/ ?RyvM_(N6  
public class QuickSort implements SortUtil.Sort{ U:(t9NX b  
?+_"2XY  
/* (non-Javadoc) (ZJ_&8C#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) > [7vX m4  
*/ W`kgYGnFG  
public void sort(int[] data) { o!&*4>tF  
quickSort(data,0,data.length-1); )A"7l7?.n)  
} :W55JD'  
private void quickSort(int[] data,int i,int j){ dD!SgK[Jv  
int pivotIndex=(i+j)/2; N9Vcp~;  
file://swap A&#Bf#!G  
SortUtil.swap(data,pivotIndex,j); fW`F^G1R  
BC+qeocg  
int k=partition(data,i-1,j,data[j]); ~A( Pa-  
SortUtil.swap(data,k,j); tL|Q{+i yE  
if((k-i)>1) quickSort(data,i,k-1); W[ DB !ue  
if((j-k)>1) quickSort(data,k+1,j); [ j_jee  
YN3uhd[2  
} v4zARE9#  
/** wVB8PO8  
* @param data iBt5aUt  
* @param i Z m>69gl  
* @param j 1owoh,V6  
* @return 6ZJQ '9f  
*/ kM@,^`&  
private int partition(int[] data, int l, int r,int pivot) { P nDZi  
do{ P*Nl3?T  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %-.GyG$i  
SortUtil.swap(data,l,r); "tIx$?I  
} ,'}ZcN2)  
while(l SortUtil.swap(data,l,r); wz57.e!Me=  
return l; MvA_tRO  
} CJ>=odK[  
2 r)c?  
} 3]Mx,u  
k5/}S@F8  
改进后的快速排序: t!$/r]XM h  
uq_SF.a'v  
package org.rut.util.algorithm.support; "k/x+%!Spc  
nNr3'6lz  
import org.rut.util.algorithm.SortUtil; +iR ;D$w  
aJ ts  
/** >#Y q&@G  
* @author treeroot )sr]}S0  
* @since 2006-2-2  Qy%/+9L  
* @version 1.0 :A[/;|&  
*/ Lj#6K@u@Z  
public class ImprovedQuickSort implements SortUtil.Sort { 70Am]L&M  
9v A`\\9  
private static int MAX_STACK_SIZE=4096; EOiKwhrV  
private static int THRESHOLD=10; fr7/%{s  
/* (non-Javadoc) }9JPSl28Jr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }HzZj;O^2>  
*/ a &j?"o  
public void sort(int[] data) { 'AoH2 |  
int[] stack=new int[MAX_STACK_SIZE]; >=(e}~5y  
~kga+H  
int top=-1; = zSrre  
int pivot; hV%l}6yS&  
int pivotIndex,l,r; _<$=n6#  
hG U &C]  
stack[++top]=0; ~*qGH  
stack[++top]=data.length-1; E*$:~w  
spf}{o  
while(top>0){ ,o`qB81  
int j=stack[top--]; <5 +?&i  
int i=stack[top--]; {>qCZ#E5WO  
 i.]}ooI  
pivotIndex=(i+j)/2; YZ}gZQ.A0  
pivot=data[pivotIndex]; /\.kH62  
4#T'Fy].  
SortUtil.swap(data,pivotIndex,j); w K+2;*bI  
=W6P>r_  
file://partition :zCm$@  
l=i-1; VmW_,  
r=j; b({2|R  
do{ BdTj0{S1u  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2;3q](d   
SortUtil.swap(data,l,r); [O3R(`<e5  
} JmK+#o  
while(l SortUtil.swap(data,l,r); z)0Fk  
SortUtil.swap(data,l,j); LImD]e`  
p ,!`8c6  
if((l-i)>THRESHOLD){ ;Mc}If*  
stack[++top]=i; P%.5xYn  
stack[++top]=l-1; CfAqMH*ip  
} 0t~--/lA  
if((j-l)>THRESHOLD){ tPUQ"S  
stack[++top]=l+1; qy !G&  
stack[++top]=j; l/]P6 @N  
} _VJb i,V  
-%A6eRShk  
} rtI4W  
file://new InsertSort().sort(data); F-nt7l  
insertSort(data); {"<Q?yA2y  
} 9:Y\D.M  
/** 4-\a]"c  
* @param data SOm~];[  
*/ ` :2C9,Xu  
private void insertSort(int[] data) { Vo\d&}Q  
int temp; Gp14;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LRs{nN.N  
} -vMP{,  
} 'K`)q6m  
} I|.B-$gH  
,Ubnz  
} $?GF]BT  
dZm{?\^_  
归并排序: a8N!jQc_m  
 i J\#su  
package org.rut.util.algorithm.support; i-Z@6\/a5  
D@Q|QY5qic  
import org.rut.util.algorithm.SortUtil; jq[>PvR  
=($qiL'h  
/** c/s'&gG33z  
* @author treeroot i55']7+0  
* @since 2006-2-2 eRf 8'-"#-  
* @version 1.0 +5Mx0s(5  
*/ w9 N Um  
public class MergeSort implements SortUtil.Sort{ HdGy$m`  
/f#sg7)  
/* (non-Javadoc) v4&*iT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R_^:<F0  
*/ :( `Q4D~l  
public void sort(int[] data) { j8PK\j[  
int[] temp=new int[data.length]; x&;SLEM   
mergeSort(data,temp,0,data.length-1); Awj`6GeJ  
} (<f[$ |%  
N>/U%01a  
private void mergeSort(int[] data,int[] temp,int l,int r){ wC[J=:]tA5  
int mid=(l+r)/2; !:>y.^O  
if(l==r) return ; 6 2LZ}yn_"  
mergeSort(data,temp,l,mid); 0]Li "Wb  
mergeSort(data,temp,mid+1,r); ]t,ppFC#  
for(int i=l;i<=r;i++){ NZl0sX.:  
temp=data; ur'A;B  
} GUK/Xiu  
int i1=l; qvT9d7x  
int i2=mid+1; u^`B#b '  
for(int cur=l;cur<=r;cur++){ # OJD<=")  
if(i1==mid+1) \dP2xou=  
data[cur]=temp[i2++]; ";jhj:Xj  
else if(i2>r) 7~IAgjo,@  
data[cur]=temp[i1++]; ICGBU>Db  
else if(temp[i1] data[cur]=temp[i1++]; m1(rAr1  
else dkXK0k  
data[cur]=temp[i2++]; T# 8O:  
} &BQ`4j~.  
} +>s[w{Svy  
F`3I~(  
} rUj]6j=e  
y :457R2F  
改进后的归并排序: UE(%R1Py  
9@!`,Co  
package org.rut.util.algorithm.support; b[/-lNrc  
Ly^r8I  
import org.rut.util.algorithm.SortUtil; 0iwx$u 7[  
iR_X,&p   
/** !7_Q_h',  
* @author treeroot 5T,`j=\  
* @since 2006-2-2 l9-(ofY*J  
* @version 1.0 SL*B `P~{  
*/ #"TTI vd0  
public class ImprovedMergeSort implements SortUtil.Sort { N!,@}s  
zW\&q!`IRP  
private static final int THRESHOLD = 10; f#[Fqkmj  
kQYX[e7n  
/* d/"e3S1  
* (non-Javadoc) 7VR+EV  
* Fd3V5h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N5 g!,3  
*/ 0{ \AP<  
public void sort(int[] data) { &'R\yX<J)  
int[] temp=new int[data.length]; b,I$.&BD  
mergeSort(data,temp,0,data.length-1); rtOXK4)]I  
} pwm ]2}+  
xvb5-tK -  
private void mergeSort(int[] data, int[] temp, int l, int r) { JD,/oL.KA  
int i, j, k; A9[l5E  
int mid = (l + r) / 2; 32dR`qb  
if (l == r) +}% 4]O;  
return; MbF.KmV  
if ((mid - l) >= THRESHOLD) <zrGPwk  
mergeSort(data, temp, l, mid); UE*M\r<  
else hH%@8'1v  
insertSort(data, l, mid - l + 1); 1{_;`V  
if ((r - mid) > THRESHOLD) 6VIi nuOW  
mergeSort(data, temp, mid + 1, r);  d':c  
else <D=U=5  
insertSort(data, mid + 1, r - mid); uP<tP:  
ZMoN  
for (i = l; i <= mid; i++) { u>d,6 !  
temp = data; G/=tC8eX  
} ]x?`&f8i  
for (j = 1; j <= r - mid; j++) { RH~KaV3  
temp[r - j + 1] = data[j + mid]; 10t9Qv/  
} U#-89.x  
int a = temp[l]; #p Ld';  
int b = temp[r]; Kk-A?ju@g  
for (i = l, j = r, k = l; k <= r; k++) { 5ILce%#zL  
if (a < b) { `Fnt#F}  
data[k] = temp[i++]; y1z4qSeM  
a = temp; 1^$ vmULj  
} else { r6JdF!\d  
data[k] = temp[j--]; Q/L:0ovR  
b = temp[j]; :IvKxOv  
} ?bW|~<X~  
} u 6;SgPw  
} 3 l QGU  
$fL2w^ @  
/** HOBM?|37CU  
* @param data qE!.C}L +  
* @param l ,~>A>J  
* @param i CB\E@u,  
*/ n](Q)h'nlo  
private void insertSort(int[] data, int start, int len) { Jwgd9a5  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6]1cy&SG  
} }HRM6fR1S  
} .3M=|rE   
} E:!?A@Fy  
} C,HKao\  
[HLXWu3  
堆排序: `2( )Vf  
73 ix4C  
package org.rut.util.algorithm.support; 09HlL=0q  
AQ7w5}g+V  
import org.rut.util.algorithm.SortUtil; %dw@;IZ#8{  
f+d[Q1  
/** }\?UmuolQ  
* @author treeroot EPkmBru ^  
* @since 2006-2-2 <#k(g\/R  
* @version 1.0 n j0!  
*/ D% v{[ KY  
public class HeapSort implements SortUtil.Sort{ 2= S;<J  
Db3# ;  
/* (non-Javadoc) 1<IF@__  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C5"=%v[gQv  
*/ HN?NY  
public void sort(int[] data) { ^`?2g[AA  
MaxHeap h=new MaxHeap(); g 67;O(3  
h.init(data); ~|QhWgq  
for(int i=0;i h.remove(); Wo+fMn(O  
System.arraycopy(h.queue,1,data,0,data.length); sba+J:#w  
} /?C}PM  
)\ow/XPE  
private static class MaxHeap{ |L%}@e Vw_  
$q%r}Cdg  
void init(int[] data){ ^}8qPBz  
this.queue=new int[data.length+1]; ;n`SF~CU  
for(int i=0;i queue[++size]=data; Ti:PKpc  
fixUp(size); K8,Q^!5]"  
} .ww~'5b0  
} :|%k*z  
%zsY=qT  
private int size=0; @A?Ss8p'  
tX)l_ ?jVH  
private int[] queue; R+}7]tva6C  
N/CL?Z>c  
public int get() { ny'?Hl'Q  
return queue[1]; J'4Pp<  
} \k&2nYVHf  
kn9ul3c  
public void remove() { )jc`_{PQg  
SortUtil.swap(queue,1,size--); ->_rSjnM{  
fixDown(1); *ETSx{)8  
} ))ArM-02  
file://fixdown ]l/ PyX  
private void fixDown(int k) { ^E-BB 6D  
int j; 3}hJ`xQ  
while ((j = k << 1) <= size) { oA+/F]XJ  
if (j < size %26amp;%26amp; queue[j] j++; GP<PU  
if (queue[k]>queue[j]) file://不用交换 CvkZ<i){  
break; b%A+k"d  
SortUtil.swap(queue,j,k); 0K T^V R  
k = j; (t[sSl  
} - ,YoVB!T  
} |YEq<wbQ  
private void fixUp(int k) { xNAX)v3Z  
while (k > 1) { we?# Dui  
int j = k >> 1; ,v\^efc:%  
if (queue[j]>queue[k]) L/*D5k%J  
break; =2J^ '7  
SortUtil.swap(queue,j,k); 7H=V|Btnc  
k = j; 9:9gam  
} 1/\JJ\  
} }%) ]b*3  
V$o]}|  
} k7ye,_&>  
9^+8b9y  
} {(#2G,  
+ PAb+E|,  
SortUtil: {#U 3A_y  
W!jg  
package org.rut.util.algorithm; lf2Q  
<dd XvUCX  
import org.rut.util.algorithm.support.BubbleSort; }+] l_!v*  
import org.rut.util.algorithm.support.HeapSort; X5_T?  
import org.rut.util.algorithm.support.ImprovedMergeSort; @y1:=["b  
import org.rut.util.algorithm.support.ImprovedQuickSort; N1!O8"Q|*3  
import org.rut.util.algorithm.support.InsertSort; *TyLB&<t  
import org.rut.util.algorithm.support.MergeSort; ;]vJ[mi~  
import org.rut.util.algorithm.support.QuickSort; 9u0<$UY%  
import org.rut.util.algorithm.support.SelectionSort; O n/q&h5  
import org.rut.util.algorithm.support.ShellSort; aWS_z6[t#6  
u,~/oTg O  
/** |X47&Y  
* @author treeroot %^KNY ;E  
* @since 2006-2-2 [%LIW%t|  
* @version 1.0 5.M82rR; ~  
*/ 2e?a"Vss  
public class SortUtil { Yx[B*] 2  
public final static int INSERT = 1; P!xN]or]u  
public final static int BUBBLE = 2; Wd>gOE  
public final static int SELECTION = 3; z{m%^,Cs,  
public final static int SHELL = 4; (Q(=MEar  
public final static int QUICK = 5; &RB{0Qhx  
public final static int IMPROVED_QUICK = 6; &*j# [6  
public final static int MERGE = 7;  Q'~3Ik  
public final static int IMPROVED_MERGE = 8; [6cF#_)*  
public final static int HEAP = 9; +?9. &<?  
7 MZ(tOR  
public static void sort(int[] data) { 328gTP1  
sort(data, IMPROVED_QUICK); CpLLsphy  
} ;Z6ngS  
private static String[] name={ B>r>z5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" sD=iHO Am  
}; [cso$Tv  
6^vz+oN  
private static Sort[] impl=new Sort[]{ ~{cG"  
new InsertSort(), b=PB"-  
new BubbleSort(), 1ir~WFP  
new SelectionSort(), p N+1/m,  
new ShellSort(), y^:N^Gt  
new QuickSort(), | Kw}S/F  
new ImprovedQuickSort(), rO[ Zx'a  
new MergeSort(), / n@by4;W  
new ImprovedMergeSort(), tRYi q  
new HeapSort() }rA _4%  
}; 0#: St  
]k)h<)nY  
public static String toString(int algorithm){ v43FU3  
return name[algorithm-1]; (|dN6M-.K  
} HDQH7Bs  
8i~n;AhDs  
public static void sort(int[] data, int algorithm) { WH lvd  
impl[algorithm-1].sort(data); ana?;NvC  
} .azA1@V|  
M0K+Vz=  
public static interface Sort { _>u0vGF-  
public void sort(int[] data); 6b-E|;"]:^  
} yL #2|t(  
kWZ/O  
public static void swap(int[] data, int i, int j) { i%# <Hi7  
int temp = data; dOFK;  
data = data[j]; 5pz(6gA  
data[j] = temp; }J+ \o~  
} cyXnZs ?|  
} OM (D@up  
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