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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。 os+wTUR^  
插入排序: ol>=tk 8}  
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package org.rut.util.algorithm.support; o[*ih\d  
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import org.rut.util.algorithm.SortUtil; BU .G~0  
/** qoq<dCt3  
* @author treeroot R5~m"bE  
* @since 2006-2-2 C8SNSeg  
* @version 1.0 dNmX<WXG  
*/ n m$G4Q  
public class InsertSort implements SortUtil.Sort{ 6/C  
C_&tOt  
/* (non-Javadoc) NWcF9z%@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D'=`O6pK  
*/ JIkmtZv  
public void sort(int[] data) { (bXp1*0 ;  
int temp; wn.0U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F= lj$?4{  
}  5Ww\h  
} 4}b:..Ku  
} +DDvM;31w  
DGUU1 vA  
} hkm3\wg  
B9 {DO  
冒泡排序: ` OK }q  
p`ZGV97  
package org.rut.util.algorithm.support; t)ry)[Dxv  
X> KsbOZ  
import org.rut.util.algorithm.SortUtil; cE#Y,-f  
s;)tLJ!  
/** ;<Q_4 V  
* @author treeroot @J)vuGS  
* @since 2006-2-2 7tnzgtal  
* @version 1.0 `fHiY.-  
*/ BF#e=p  
public class BubbleSort implements SortUtil.Sort{ |8rJqtf +&  
Y`RfE  
/* (non-Javadoc) W12K93tO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >.A:6  
*/ cZ,_O~  
public void sort(int[] data) { l#:Q V:  
int temp; XP1_{\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ku# _   
if(data[j] SortUtil.swap(data,j,j-1); (\_d'Js(;  
} a+Nd%hoe  
} A`8If  
} hWJc A.A  
} N:zSJW`1  
I!bZ-16X  
} l{yPO@ut`F  
w,$17+]3  
选择排序: ;RYKqUE  
C$; ~=  
package org.rut.util.algorithm.support; EtG)2)  
1gr jK.x  
import org.rut.util.algorithm.SortUtil; gr7_oJ:R  
&0TheY;srf  
/** i vk|-C'\  
* @author treeroot M>j)6?n`_  
* @since 2006-2-2 =Ch#pLmH  
* @version 1.0 $<#sCrNX  
*/ Ks-><-2+N  
public class SelectionSort implements SortUtil.Sort { _Fjv.VQ,  
>a K&T"  
/*  Q.yoxq  
* (non-Javadoc) BcWReyO<M  
* ];YOP%2   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 03y<'n  
*/ V _,*  
public void sort(int[] data) { SfR_#"Uu  
int temp; b"V-!.02  
for (int i = 0; i < data.length; i++) { m9S5;kB]  
int lowIndex = i; gS 3&,^  
for (int j = data.length - 1; j > i; j--) { }Q_i#e(S  
if (data[j] < data[lowIndex]) { v]>(Ps )R  
lowIndex = j; vY koh/(/u  
} Dr<Bd;)  
} u8QX2|  
SortUtil.swap(data,i,lowIndex); xcA`W|M  
} zrM|8Cu  
} im"v75 tc  
#c_ZU\" h"  
} ,\b5M`<c  
.#}R$}e+  
Shell排序: ,q1RJiR  
FE.:h'^h  
package org.rut.util.algorithm.support; K9iR>put  
AmHIG_'  
import org.rut.util.algorithm.SortUtil; Rz<fz"/2<  
#Bjnz$KB  
/** Qpc>5p![3  
* @author treeroot v>6r|{  
* @since 2006-2-2 t s&C0  
* @version 1.0 Y`v&YcX;  
*/ SV >EB;<  
public class ShellSort implements SortUtil.Sort{ n@f@-d$m\<  
RY&~{yl$"1  
/* (non-Javadoc) 5{UGSz 1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GzX@Av$  
*/ M*Xzr .6  
public void sort(int[] data) { BH^q.p_#>X  
for(int i=data.length/2;i>2;i/=2){ V Puzu|  
for(int j=0;j insertSort(data,j,i); \} 5\^&}_  
} &%<G2x$  
} ZZUCwczI  
insertSort(data,0,1); uWSG+  
} MLl:)W*  
pmZr<xs   
/** y!j1xnzki  
* @param data C|+5F,D  
* @param j 4I$#R  
* @param i _#I0m(  
*/ 8oK30?  
private void insertSort(int[] data, int start, int inc) { e5dwq  
int temp; w$_ooQ(_;Q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); BTB,a$P/  
} JkTL+obu  
} n:{yri+  
} gg=z.`}  
98l#+4 +  
} '` n\YO.N  
ufmFeeg  
快速排序: lxbZM9A2  
q;+qIV&.:  
package org.rut.util.algorithm.support; 1-`8v[S  
LYT0 XB)A  
import org.rut.util.algorithm.SortUtil; y3vOb, 4  
SRMy#j-  
/** B; ~T|exu  
* @author treeroot z[B7k%}  
* @since 2006-2-2 YS9|J=!~  
* @version 1.0 D .E>Y  
*/ -1[ri8t;nV  
public class QuickSort implements SortUtil.Sort{ `ainJs:B  
i^yQ; 2 -  
/* (non-Javadoc) w] VvH"?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OF)X(bi4j  
*/ fYpy5vc-dm  
public void sort(int[] data) { q^gd1K<N  
quickSort(data,0,data.length-1); jd#{66:  
} @E1N9S?>  
private void quickSort(int[] data,int i,int j){ ,MdCeA%`  
int pivotIndex=(i+j)/2; 9.<$&mVk7`  
file://swap f?)qZPM  
SortUtil.swap(data,pivotIndex,j); =^6]N~*,D  
-k'=s{iy  
int k=partition(data,i-1,j,data[j]); ~&g:7f|X  
SortUtil.swap(data,k,j); D+RG,8Ht  
if((k-i)>1) quickSort(data,i,k-1); W /IyF){  
if((j-k)>1) quickSort(data,k+1,j); 8<xJmcTEwO  
Gz`Zp "i%0  
} l-5-Tf&j  
/** |(Sqd;#v  
* @param data ^#;2 Pd>  
* @param i  7p{lDQ  
* @param j O *CKyW_$t  
* @return [qc90)^Q,  
*/ wEk9(|  
private int partition(int[] data, int l, int r,int pivot) { 'kp:yI7w  
do{ |>m@]s7Z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?=6zgb"9-  
SortUtil.swap(data,l,r); ]F,5Oh :OY  
} (UpSi6?\  
while(l SortUtil.swap(data,l,r); XMpPG~XdN  
return l; @D%VV=N~[  
} h.PY$W<  
dP )YPy_`  
} [mX\Q`)QP  
07n=H~yU  
改进后的快速排序: W Qe>1   
]ko>vQ4]3  
package org.rut.util.algorithm.support; yVSJn>l!  
M^H357r%  
import org.rut.util.algorithm.SortUtil; Xod#$'M>  
(xMAo;s_  
/** 'Kl} y,  
* @author treeroot o d!TwGX  
* @since 2006-2-2 ,w c|YI)E  
* @version 1.0 ! @|"84  
*/ S);bcowf_  
public class ImprovedQuickSort implements SortUtil.Sort { > QCVsX>~  
4W6gKY  
private static int MAX_STACK_SIZE=4096; :[! rj  
private static int THRESHOLD=10; r"^P>8  
/* (non-Javadoc) i9$ -lk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nq-qks.&  
*/ >[NNu Y~  
public void sort(int[] data) { ZM0vB% M|  
int[] stack=new int[MAX_STACK_SIZE]; s+,JwV?b  
NU81 V0:jG  
int top=-1; ZjbMk 3Y  
int pivot; h%Bp%Y9  
int pivotIndex,l,r; )%P!<|s:5  
C&r&&Pw  
stack[++top]=0; p9fx~[_5/  
stack[++top]=data.length-1; G$WMW@fy  
VP5_Y1e7  
while(top>0){ (;\JCeGA  
int j=stack[top--]; {o AJL  
int i=stack[top--]; o[aRG7C  
t '* L,  
pivotIndex=(i+j)/2; ^k/@y@%  
pivot=data[pivotIndex]; j&u{a[Y/}  
K%)u zP  
SortUtil.swap(data,pivotIndex,j); (zte'F4  
] vQn*T"^  
file://partition kk& ([ xqU  
l=i-1; <$R'y6U :  
r=j; \vsfY   
do{ "p0e6Z=  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?$%#y u#.  
SortUtil.swap(data,l,r); o^H.uBO{  
} OUQySac  
while(l SortUtil.swap(data,l,r); 0;KjP?5  
SortUtil.swap(data,l,j); ~Cm_=[  
m>DBO|`  
if((l-i)>THRESHOLD){ G,3.'S,7  
stack[++top]=i; lh{U@,/  
stack[++top]=l-1; =[`B -?  
} =HH}E/9z  
if((j-l)>THRESHOLD){ s: pmB\  
stack[++top]=l+1; .liVlo@  
stack[++top]=j;  YH@p\#Y  
} <BEM`2B  
/{|JQ'gqX  
} ZuH@qq\  
file://new InsertSort().sort(data); 6C7|e00v  
insertSort(data); <>%2HRn<u  
} M*<Ee]u  
/** AhWcJD]  
* @param data 2Jm#3zFYz3  
*/ E.45 s? r  
private void insertSort(int[] data) { `r+zNJ@q  
int temp; 4zzJ5,S1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }fU"s"  
} Lk#8G>U  
} Qv~lH&jG  
} e#BxlC  
4c0 =\v  
} {Dupk0'(  
k nTCX  
归并排序: C;>!SRCp  
Z4KYVHD,  
package org.rut.util.algorithm.support; =^3 Z L  
OiI29  
import org.rut.util.algorithm.SortUtil; c'O"</  
>{R+j4%  
/** *sz:c3{_  
* @author treeroot | $  
* @since 2006-2-2 o+*7Q!  
* @version 1.0 Pg4go10|  
*/ yzWVUqtXm  
public class MergeSort implements SortUtil.Sort{ 1)Z4 (_  
w]1Ltq*g/  
/* (non-Javadoc) S+2we  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cs9o_Z~  
*/ C( wZj O?N  
public void sort(int[] data) { Bc&Y[u-n  
int[] temp=new int[data.length]; J@$KF GUs  
mergeSort(data,temp,0,data.length-1); >= O5=\`  
} xe`SnJgA  
o@2Y98~Q}  
private void mergeSort(int[] data,int[] temp,int l,int r){ \8Y62  
int mid=(l+r)/2; l_$ le  
if(l==r) return ; ZB+~0[C  
mergeSort(data,temp,l,mid); pd^"MG  
mergeSort(data,temp,mid+1,r); ;2N: =Rv  
for(int i=l;i<=r;i++){ mM(Z8PA 9-  
temp=data; uSQRI9/ir2  
} @;;3B  
int i1=l; Ndmki 7A  
int i2=mid+1; CT{mzC8  
for(int cur=l;cur<=r;cur++){ ;x,yGb`  
if(i1==mid+1) ^J~5k,7jX  
data[cur]=temp[i2++]; L+ K,Y:D!W  
else if(i2>r) Tji*\<?  
data[cur]=temp[i1++]; ,B2p\  
else if(temp[i1] data[cur]=temp[i1++]; L5DeLF+  
else >v#6SDg  
data[cur]=temp[i2++]; e5 N$+P"  
} t XfXuHa  
} JIatRc?g  
!(A<  
} gk hmQd  
,76Q*p  
改进后的归并排序: ^i[bo3  
,4mb05w;d  
package org.rut.util.algorithm.support; aE(DNeG-H  
<5O:jd  
import org.rut.util.algorithm.SortUtil; P1_6:USBM  
&[b(Lx|i  
/** t9~Y ?  
* @author treeroot s7?d_+O  
* @since 2006-2-2 # KUN ZW  
* @version 1.0 XcFu:B  
*/ weH;,e*r  
public class ImprovedMergeSort implements SortUtil.Sort { N1fPutl$a  
\%}w7J;  
private static final int THRESHOLD = 10; Sc14F Fs  
0JE*|CtK  
/* .k!<Oqa  
* (non-Javadoc) q~. .Z Y`7  
* ,8[R0wsBaz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s{uSU1lQn  
*/ LkyT4HC8n  
public void sort(int[] data) { sW]>#e  
int[] temp=new int[data.length]; kF-7OX0)  
mergeSort(data,temp,0,data.length-1); o%E-K=a  
} E>c*A40=.n  
D4jZh+_|S  
private void mergeSort(int[] data, int[] temp, int l, int r) { lw`$(,  
int i, j, k; m^$KDrkD  
int mid = (l + r) / 2; K |^OnM  
if (l == r) &8HJ4Vj2  
return; +8}8b_bgH  
if ((mid - l) >= THRESHOLD) *RD<*l  
mergeSort(data, temp, l, mid); ~--b#o{  
else 3[UaK`/1C  
insertSort(data, l, mid - l + 1); /"@k_[O  
if ((r - mid) > THRESHOLD) 9]gV#uF  
mergeSort(data, temp, mid + 1, r); #X"fm1  
else m$`4.>J  
insertSort(data, mid + 1, r - mid); ffy,ds_7  
g?rK&UTU  
for (i = l; i <= mid; i++) { Ri/D>[  
temp = data; ,l#f6H7p  
} 9Xe|*bT  
for (j = 1; j <= r - mid; j++) { af_b G;  
temp[r - j + 1] = data[j + mid]; QfV:&b`  
} %Vb~}sT:  
int a = temp[l]; ~? n)/i("  
int b = temp[r]; R[W'LRh~:1  
for (i = l, j = r, k = l; k <= r; k++) { DD'RSV5]  
if (a < b) { G&q@B`I  
data[k] = temp[i++]; zB8J|uG  
a = temp; .Fx-$Yqy  
} else { ~.E r  
data[k] = temp[j--]; \iH\N/  
b = temp[j]; .2 }5Dc,eR  
} ? @- t.N  
} 9gFfbvd  
} 2,rjy|R`  
7I0K= 'D7  
/** &;[0.:;  
* @param data w|U 7pUz  
* @param l IAd[_<9D  
* @param i _SrkR7  
*/ NKYHJf2?x  
private void insertSort(int[] data, int start, int len) { QV8;c^EZ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); DI\^&F)3T2  
} & &:ZY4`  
} 7&2CLh  
} /h,-J8[  
} 2NF#mWZ(s  
qf*e2" ~v  
堆排序: ]#\/1!W  
3J[ 5^  
package org.rut.util.algorithm.support; Uc0Sb  
&ER,;^H `6  
import org.rut.util.algorithm.SortUtil; o(YF`;OhvS  
Lf+3nN  
/** 6oLZH6fG  
* @author treeroot to#T+d.(v  
* @since 2006-2-2 x8Nij: K#  
* @version 1.0 i}kMo@  
*/ {^@qfkZz^  
public class HeapSort implements SortUtil.Sort{ b/UjKNf@  
jN%+)Kj0C)  
/* (non-Javadoc) L[Y|K%;~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J';XAB }  
*/ cJ#%OU3 p  
public void sort(int[] data) { !}J19]\  
MaxHeap h=new MaxHeap(); R 5Cy%  
h.init(data); 8O.5ML{  
for(int i=0;i h.remove(); `cqZ;(^  
System.arraycopy(h.queue,1,data,0,data.length); J1d|L|M  
} 5wI j:s  
&P(vm@*  
private static class MaxHeap{ 9=G dj!L  
*cc|(EM  
void init(int[] data){ 3&Fqd  
this.queue=new int[data.length+1]; :i]g+</  
for(int i=0;i queue[++size]=data; Cgn@@P5ZC  
fixUp(size); oI9-jW  
} u\@ L|rh  
} h<FEe~  
[zhcb+^5l  
private int size=0; EakS(Q?  
oT^r  
private int[] queue; 9 F|e .  
 o[>p  
public int get() { y0 qq7Dmu  
return queue[1]; (^= Hq'D  
} 0@2pw2{Ru  
3L%g2`  
public void remove() { &:Sb$+z  
SortUtil.swap(queue,1,size--); }9>X M  
fixDown(1); D;OR?NdgvW  
} ;/ao3Q   
file://fixdown WyJXT.  
private void fixDown(int k) { m NApFwZ  
int j; R,ddH[3  
while ((j = k << 1) <= size) { W'<cAg?  
if (j < size %26amp;%26amp; queue[j] j++; Z.mnD+{  
if (queue[k]>queue[j]) file://不用交换 'W|@d8}h  
break; 2s8(r8AI  
SortUtil.swap(queue,j,k); nuX W/7M  
k = j; \ /6m  
} eO=!(  
}  P7 p'j  
private void fixUp(int k) { o)IcAqN$H  
while (k > 1) { 1@A*Jj[R%  
int j = k >> 1; 0 ;ov^]  
if (queue[j]>queue[k]) Ld YaJh~h  
break; 1Qgd^o:d  
SortUtil.swap(queue,j,k); 0-w^y<\  
k = j; ti9 cfv>  
} [8C6%n{W  
} $; t#pN/`  
Ss{  
} m 1lfC  
"rI By  
} o'nrLI(t  
hy|X(m  
SortUtil: JPTVZ  
AAt<{  
package org.rut.util.algorithm; 1MzOHE  
me`( J y<  
import org.rut.util.algorithm.support.BubbleSort; $[P>nRhW  
import org.rut.util.algorithm.support.HeapSort; zwKm;;v8  
import org.rut.util.algorithm.support.ImprovedMergeSort; iiZK^/P$  
import org.rut.util.algorithm.support.ImprovedQuickSort; Q{Lsr,  
import org.rut.util.algorithm.support.InsertSort; IRQ3>4hI  
import org.rut.util.algorithm.support.MergeSort; u3H2\<  
import org.rut.util.algorithm.support.QuickSort; `?L-{VtM3*  
import org.rut.util.algorithm.support.SelectionSort; $MG. I[h  
import org.rut.util.algorithm.support.ShellSort; `;R|SyrX  
-/ #tQ~{gs  
/** <ArP_! `3  
* @author treeroot kVZ5>D$  
* @since 2006-2-2 g1`/xJz|  
* @version 1.0 @Q atgYu  
*/ #/9(^6f:  
public class SortUtil { s(I7}oRWsL  
public final static int INSERT = 1;  Cz_chK4  
public final static int BUBBLE = 2; __V6TDehJ$  
public final static int SELECTION = 3; ;zO(bj>  
public final static int SHELL = 4; hrRX=  
public final static int QUICK = 5; A fctycQ-  
public final static int IMPROVED_QUICK = 6; KCed!OJ+  
public final static int MERGE = 7; S,,3h0$X  
public final static int IMPROVED_MERGE = 8; 3f :I<S7  
public final static int HEAP = 9; U;:,$]+  
+xlxhF  
public static void sort(int[] data) { ~4iI G}Y<  
sort(data, IMPROVED_QUICK); Th%1eLQ  
} Tl3{)(ezx  
private static String[] name={ 0R2 AhA#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0Fh*8a}?b  
}; 5!*5mtI  
z,oqYU\:  
private static Sort[] impl=new Sort[]{ ?%h JZm;  
new InsertSort(), g~@0p7]Y  
new BubbleSort(), {P#&e>)v{  
new SelectionSort(), RfB""b8]=  
new ShellSort(), =#<hT s  
new QuickSort(), ?s5zTT0U>$  
new ImprovedQuickSort(), RfwTqw4@  
new MergeSort(), q'?:{k$%  
new ImprovedMergeSort(), 2eu`X2IBcT  
new HeapSort() MNiu5-g5  
}; R6Cm:4m}I  
Tf"DpA!_  
public static String toString(int algorithm){ [,a O*7 N  
return name[algorithm-1]; wDZFOx0#8  
} G1~|$X@@  
k[ Iwxl;/  
public static void sort(int[] data, int algorithm) { fwRlqfi  
impl[algorithm-1].sort(data); L/GM~*Xp(O  
} < P5;8  
&hba{!`y  
public static interface Sort { WL}6YSC  
public void sort(int[] data); 5e,Dk0d  
} W &4`eB/4}  
N)h>Ie  
public static void swap(int[] data, int i, int j) { @X/S h:  
int temp = data; l#o43xr  
data = data[j]; 5 ^iU1\(L  
data[j] = temp; B<[;rk  
} E!VAA=  
} asW1GZO  
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