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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。 t`H^! b  
插入排序: ]#))#-&1  
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package org.rut.util.algorithm.support; mMu3B2nke=  
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import org.rut.util.algorithm.SortUtil; d*8 c,x  
/** kn`KU.J.  
* @author treeroot >x&$lT{OY  
* @since 2006-2-2 x\;`x$3t  
* @version 1.0 d<(1^Rto  
*/ Yy>%dL  
public class InsertSort implements SortUtil.Sort{ JL2IVENWc  
duV|'ntr  
/* (non-Javadoc) tCtR(mG=A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0xIr:aFF  
*/ Lm:O vVVB  
public void sort(int[] data) { B,|M  
int temp; Yca9G?^\v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7Cp>iWV  
} !W]># Pm  
} Joq9.%7Q  
} q.~.1 '`!  
26.iFt/:  
} Z(*n ZT,  
bHWy9-  
冒泡排序: X#1So.}c  
@MAk/mb&  
package org.rut.util.algorithm.support; (Qq! u  
oQWS$\Rr.  
import org.rut.util.algorithm.SortUtil; `k _5Pz\  
DV*8Mkzg  
/** ?2_u/x  
* @author treeroot 7:{4'Wr@6|  
* @since 2006-2-2 :14O=C  
* @version 1.0 p5c'gziR  
*/ w&`gx6?-na  
public class BubbleSort implements SortUtil.Sort{ q;tsA"l  
(fm\kV  
/* (non-Javadoc) = J).(E89  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tG{e(  
*/  6<sB   
public void sort(int[] data) { d q"b_pr;  
int temp; X f!Bsp#\g  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (3c,;koRR  
if(data[j] SortUtil.swap(data,j,j-1); 52wq<[#tK  
} dSk\J[D  
} r"Pj ,}$A  
} %49@  
} _6^vxlF  
qJ#?=ITE  
} c<DsCzX  
+lO Y IQ  
选择排序: bN<c5  
Nd^9.6,JU  
package org.rut.util.algorithm.support; '1=/G7g  
0f;L!.eP  
import org.rut.util.algorithm.SortUtil;  @*%Q,$  
jr" yIC_  
/** <s]K~ Vo  
* @author treeroot ,^:Zf|V  
* @since 2006-2-2 Xdq2.:\  
* @version 1.0 V{ra,a*  
*/ Y@M=6G  
public class SelectionSort implements SortUtil.Sort { REQ2pfk0  
Ml+.\'r  
/* .y+>-[j?B  
* (non-Javadoc) MvL%*("4b  
* m\"M`o B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zP rT0  
*/ JWlH(-U4|  
public void sort(int[] data) { Ud`V"X  
int temp; :4]&R9J>o  
for (int i = 0; i < data.length; i++) { pb_mW;JVu  
int lowIndex = i; q|=tt(}G  
for (int j = data.length - 1; j > i; j--) { K]N^6ome  
if (data[j] < data[lowIndex]) { 6\OSIxJZF  
lowIndex = j; &"Ua"H)  
} K)l{3\9l|  
} $C,f>^1  
SortUtil.swap(data,i,lowIndex); 57v[b-SK  
} JNuo+Pq  
} f ,K1a9.  
xf% ,UQ  
} @hQ+pG@s  
W(~G^Xu  
Shell排序: tojJQ6;J  
Z9~~vf#  
package org.rut.util.algorithm.support; V<:kS  
HR.S.(t[_  
import org.rut.util.algorithm.SortUtil; +qD4`aI   
4-ZiKM  
/** }I#;~|v~<  
* @author treeroot |cWW5\/  
* @since 2006-2-2 B/i,QBPF]  
* @version 1.0 w+2:eFi=/  
*/ 7.8ukAud  
public class ShellSort implements SortUtil.Sort{ b0riiF  
Xb)XV$0  
/* (non-Javadoc) $M$oNOT}Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,XI,B\eNk  
*/ K&D -1u  
public void sort(int[] data) { P.&,nFIg3  
for(int i=data.length/2;i>2;i/=2){ !COaPrg  
for(int j=0;j insertSort(data,j,i); ZKAIG=l&!  
} q fadsVp  
} ^^3 >R`  
insertSort(data,0,1); i.0}qS?  
} tG^Oj:  
HEht^ /pJ  
/** Fm*n>^P@Y  
* @param data 0O!%NL[,  
* @param j W{=>c/  
* @param i Gv?3}8Wp  
*/ d3 fE[/oU  
private void insertSort(int[] data, int start, int inc) { wvx N6  
int temp; e_\4(4x  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3/}=x<ui  
} L a0H  
} NZi5rX N  
} - FA#hUK$  
sJt&`kZ  
} |Wi$@sWO  
S%mN6b~{  
快速排序: +]`MdOu  
_BHb0zeot  
package org.rut.util.algorithm.support; 7EQ |p  
(+CB)nV0IA  
import org.rut.util.algorithm.SortUtil; D GOc!  
7KuTC%7  
/** @6h=O`X>  
* @author treeroot "%qGcC8  
* @since 2006-2-2 A}H)ojG'v  
* @version 1.0 N$:[`,  
*/ Z^>3}\_v  
public class QuickSort implements SortUtil.Sort{ 8'Z9Z*^h#x  
x8b w#  
/* (non-Javadoc) /bfsC& 3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KB *[b  
*/ #E{OOcM  
public void sort(int[] data) { ldI;DoE#U1  
quickSort(data,0,data.length-1); G?'L1g[lc  
} DE."XSni  
private void quickSort(int[] data,int i,int j){ M!!W>A@T[g  
int pivotIndex=(i+j)/2; e u^z&R!um  
file://swap l'B`f)  
SortUtil.swap(data,pivotIndex,j); QmT]~4PqS  
5<,}^4wWZ  
int k=partition(data,i-1,j,data[j]); :E@"4O?<Y)  
SortUtil.swap(data,k,j); -]W AB9  
if((k-i)>1) quickSort(data,i,k-1); c<pr1g  
if((j-k)>1) quickSort(data,k+1,j); [M Z'i/  
IUbYw~f3  
} 2[qO;js  
/** :HMnU37m W  
* @param data A5!f#  
* @param i /3'-+bp^=  
* @param j uDQ d48>  
* @return uJF,:}qA  
*/ HMrS::  
private int partition(int[] data, int l, int r,int pivot) { 3~a!h3.f  
do{ J@p[v3W  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /NMd GKr  
SortUtil.swap(data,l,r); BT`D|<  
} i7mT<w>?  
while(l SortUtil.swap(data,l,r); `<b 3e(A  
return l; q`"gT;3S  
} qD7# q]  
+ [|2k(U  
} pWwaN4  
h1FM)n[E7  
改进后的快速排序: ~O 65=8  
6$ 9n_AS  
package org.rut.util.algorithm.support; oizD:|  
)/Ee#)z*  
import org.rut.util.algorithm.SortUtil; ?9OiF-:n  
0Evmq3,9  
/** 6b6}HO  
* @author treeroot Q$iv27  
* @since 2006-2-2 )O#>ONm^  
* @version 1.0 [0Z r z+q  
*/ g=o)=sQd  
public class ImprovedQuickSort implements SortUtil.Sort { J+Q ;'J  
2/E3~X7  
private static int MAX_STACK_SIZE=4096; 5?kF'yksR  
private static int THRESHOLD=10; @Zjy"u  
/* (non-Javadoc) UccnQZ7/I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q 1Rk'k4+  
*/ C8-4 m68"  
public void sort(int[] data) { kNd[M =%  
int[] stack=new int[MAX_STACK_SIZE]; \m*?5]m ;  
P7 H-Dw  
int top=-1; jxZ R%D  
int pivot; b@/z^k{%  
int pivotIndex,l,r; ?VCb@&*  
]Tx8ImD#)A  
stack[++top]=0; VbKky1a@  
stack[++top]=data.length-1; mxGa\{D# y  
4F??9o8}  
while(top>0){ )l\BZndf  
int j=stack[top--]; H}dsd=yO  
int i=stack[top--]; do+HPnfDzU  
tceQn ^|<  
pivotIndex=(i+j)/2; 5m=3{lBi  
pivot=data[pivotIndex]; *&% kkbA  
:PY~Cws  
SortUtil.swap(data,pivotIndex,j); qyP@[8eH  
TStu)6%`  
file://partition TsfOod   
l=i-1; P%ev8]2  
r=j; #J\ 2/~  
do{ ++5W_Ooep  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )o SFHf  
SortUtil.swap(data,l,r); Me`jh8(K\6  
} &t5pJ`$(Cy  
while(l SortUtil.swap(data,l,r); z"Gk K T  
SortUtil.swap(data,l,j); )DI/y1  
!FA^~  
if((l-i)>THRESHOLD){ y4C_G?  
stack[++top]=i; fY}e.lD  
stack[++top]=l-1; PHyS^J`  
} !D7/Ja  
if((j-l)>THRESHOLD){ *h-_   
stack[++top]=l+1; L/"u,~[  
stack[++top]=j; 8N'`kd~6[  
} q/6d^&  
hE/gul?|_  
} s~Ni\SF  
file://new InsertSort().sort(data); )67Kd]  
insertSort(data); BBnj}XP*4  
} 8]YFlW9  
/** 7M<7^)9  
* @param data )z=`,\&p:  
*/ g%4-QCZ,  
private void insertSort(int[] data) { 0"ZB|^c=  
int temp; kgEGL]G>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G!ty@ Fx  
} ",B92[}Ar  
} Hd U1gV>  
} DCACj-f  
`2o/W]SSk  
} sG%Q?&-  
QukLsl]U  
归并排序: P2_JS]>  
lo,?mj%M  
package org.rut.util.algorithm.support; Y@c! \0e$  
DQ?'f@I&*  
import org.rut.util.algorithm.SortUtil; erdWGUfQOe  
r\F`xtR(  
/** x&8HBF'  
* @author treeroot THi*'D/  
* @since 2006-2-2 smoz5~  
* @version 1.0 &\F`M|c  
*/ g|9' Lk  
public class MergeSort implements SortUtil.Sort{ R.Ao%VT  
8*V3g_z  
/* (non-Javadoc) :5L9tNr{_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ncqd,&z  
*/ '&I.w p`^  
public void sort(int[] data) { RnE=T/VZJ  
int[] temp=new int[data.length]; 5%rD7/7N  
mergeSort(data,temp,0,data.length-1); a<kx95  
} a-MDZT<xA+  
5)wz`OS  
private void mergeSort(int[] data,int[] temp,int l,int r){ razVO]]E  
int mid=(l+r)/2; ?dl7!I@<E<  
if(l==r) return ; iN %kF'&9  
mergeSort(data,temp,l,mid); ~gNa<tg"1  
mergeSort(data,temp,mid+1,r); )V*Z|,#no  
for(int i=l;i<=r;i++){ ULIbVy7Y  
temp=data; frWw-<HoI  
} 4N[8LC;MH  
int i1=l; q~^Jd=cB\  
int i2=mid+1; bJ*jJl x  
for(int cur=l;cur<=r;cur++){ GPy+\P`  
if(i1==mid+1) nbj&3z,  
data[cur]=temp[i2++]; ex @e-<  
else if(i2>r) VC:.ya|Z  
data[cur]=temp[i1++]; u7=`u/  
else if(temp[i1] data[cur]=temp[i1++]; QeuIAs*_  
else w^s|YF=c  
data[cur]=temp[i2++]; _n,Ye&m  
} gI~R u8  
} (|(#~o]40t  
JK4vQWy  
} _Y4%Fv>@  
t4R=$ km  
改进后的归并排序: aze}ko NE  
Ms ;:+JI  
package org.rut.util.algorithm.support; Z 7rVM   
+!\$SOaR{  
import org.rut.util.algorithm.SortUtil; R3`!Xj#&M  
)@Fuw*  
/** 8%S5Fc #am  
* @author treeroot tY-{uHW&h  
* @since 2006-2-2 &> tmzlww  
* @version 1.0 8  ;y N  
*/  /~yk  
public class ImprovedMergeSort implements SortUtil.Sort { v@_b"w_TY  
p&/}0eL y  
private static final int THRESHOLD = 10; Zg "g/I.+d  
R=yn4>I  
/* `rzgC \  
* (non-Javadoc) :@a8>i1&  
* hg_@Ui@[z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &k*sxW'  
*/ wWB-P6  
public void sort(int[] data) { yANk(  
int[] temp=new int[data.length]; ~W p>tnl  
mergeSort(data,temp,0,data.length-1); ;N6Euiz  
} ^  ry   
78&jaw*1A  
private void mergeSort(int[] data, int[] temp, int l, int r) { {s&6C-  
int i, j, k; ~1jSz-s  
int mid = (l + r) / 2; JE9SPFQx9M  
if (l == r) {hr>m,O%  
return; Hy`Ee7>  
if ((mid - l) >= THRESHOLD)  u;R<  
mergeSort(data, temp, l, mid); 0l=g$G \%  
else } QVREj  
insertSort(data, l, mid - l + 1); FJDx80J  
if ((r - mid) > THRESHOLD) atR WKsY<  
mergeSort(data, temp, mid + 1, r); 7t &KKKV  
else 99j^<)  
insertSort(data, mid + 1, r - mid); 0\*[7!`s  
sDA&U9;  
for (i = l; i <= mid; i++) { .\K0+b;  
temp = data; #/a>dK  
} 4jMC E&<  
for (j = 1; j <= r - mid; j++) { LxaR1E(Cc'  
temp[r - j + 1] = data[j + mid]; b2]1Dfw  
} g/e\ EkT  
int a = temp[l]; 2MaHD}1Jw  
int b = temp[r]; ?.Z4GWyXa  
for (i = l, j = r, k = l; k <= r; k++) { < 3i2(k  
if (a < b) { ;/T=ctIs  
data[k] = temp[i++]; k`ulDQu  
a = temp; u hW @ Y+  
} else { %s<7 M@]f  
data[k] = temp[j--]; b3]QH h/  
b = temp[j]; OIP JN8V  
} ]w ^9qS  
} i7]\}w|  
} ',`GdfAsH  
Y~@@{zP  
/** d;1%Ei3K  
* @param data -wJ/j~ +m+  
* @param l yzJ VU0s  
* @param i \1x<bx/1  
*/ RS'!>9I  
private void insertSort(int[] data, int start, int len) { }j9V0`Q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); d/oxRzk'L  
} ,ND}T#yTR  
} !;EG<ji,gj  
} zQvp<IUq  
} CJ0{>?  
5R"My^G  
堆排序: 2w6 y  
~Iw7Xq E2  
package org.rut.util.algorithm.support; Qxb5Y)/jn  
X;`XkOjk  
import org.rut.util.algorithm.SortUtil; 7L68voC@U  
rik-C7  
/** ,FWC|uM"  
* @author treeroot AY3nQH   
* @since 2006-2-2 R)4L]ZF  
* @version 1.0 Xi vzhI4  
*/ 3zi(|B[,?  
public class HeapSort implements SortUtil.Sort{ 1C) l) pV  
L9L!V"So1k  
/* (non-Javadoc) 2rK%fV53b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6%'bo`S#  
*/ |oCE7'BaP  
public void sort(int[] data) { ';<gc5EK  
MaxHeap h=new MaxHeap(); 1Q-O&\-xg  
h.init(data); =P>c1T1-  
for(int i=0;i h.remove(); ~@g7b`t=la  
System.arraycopy(h.queue,1,data,0,data.length); yKSvg5lLy  
} ~:8}Bz2!5  
s az<NT  
private static class MaxHeap{ Tp7*T8  
8)n799<.  
void init(int[] data){ !e+ex"7  
this.queue=new int[data.length+1]; w#ha ^4  
for(int i=0;i queue[++size]=data; o1I8l7  
fixUp(size); YMGzO  
} `yiw<9yp2  
} Cbw@:+%J{  
aH@GhI^@  
private int size=0; zW[fHa$m  
~%)ug3%e  
private int[] queue; mWhQds6  
'L$%)`;e  
public int get() { GZt+(q  
return queue[1]; \jlem<&  
} jvGGIb"&1  
ey4RKk,  
public void remove() { %p?+r  
SortUtil.swap(queue,1,size--); )q xZHV  
fixDown(1); i n}N[  
} `` !BE"yN  
file://fixdown _; 7{1n  
private void fixDown(int k) { #9=as Y  
int j; Z.:g8Xl-6  
while ((j = k << 1) <= size) { lN@SfM4\  
if (j < size %26amp;%26amp; queue[j] j++; !2]eVO  
if (queue[k]>queue[j]) file://不用交换 df@r2 /Y  
break; +OGa}9j-  
SortUtil.swap(queue,j,k); /F/zMZGSA{  
k = j; 1D@'uApi.  
} 3RSiu}  
} d5aG6/  
private void fixUp(int k) { ){'Ef_/R  
while (k > 1) {  Z1@E  
int j = k >> 1; 0M[O(.x  
if (queue[j]>queue[k]) POZ5W)F(  
break; W ='c+3O6  
SortUtil.swap(queue,j,k); }r%Si  
k = j; W+F{!dW  
} ,_ zivUU  
} 8v eG^o  
G:u-C<^'  
} AHg:`Wjv-  
/E(319u_  
} 99xs5!4s  
2QU ZBrs s  
SortUtil: )83UF r4kP  
6 GL.bS  
package org.rut.util.algorithm; (f Gmjx  
H);O.m  
import org.rut.util.algorithm.support.BubbleSort; sR(or=ub~  
import org.rut.util.algorithm.support.HeapSort; m6'VMW  
import org.rut.util.algorithm.support.ImprovedMergeSort; s"tyCDc.c  
import org.rut.util.algorithm.support.ImprovedQuickSort;  12W`7  
import org.rut.util.algorithm.support.InsertSort; \U(;%V  
import org.rut.util.algorithm.support.MergeSort; .O h4b5  
import org.rut.util.algorithm.support.QuickSort; Etv!:\\[  
import org.rut.util.algorithm.support.SelectionSort; /&PRw<}>_o  
import org.rut.util.algorithm.support.ShellSort; EL--?<g  
]f%yeD  
/** M|HW$8V3_2  
* @author treeroot (4;m*' X  
* @since 2006-2-2 C2$_Ad=s  
* @version 1.0 y,D@[*~Xb  
*/ +0{$J\s  
public class SortUtil { ]VuB2L[D  
public final static int INSERT = 1; O/Q7{5n  
public final static int BUBBLE = 2; wNNInS6  
public final static int SELECTION = 3; Q~p)@[q  
public final static int SHELL = 4; 25:[VH$:4  
public final static int QUICK = 5; T4 :UJj}  
public final static int IMPROVED_QUICK = 6; x%J4A+kU  
public final static int MERGE = 7; tBJCfM  
public final static int IMPROVED_MERGE = 8; H8$l }pOz  
public final static int HEAP = 9; CxvL!ew  
PT t#Ixn,  
public static void sort(int[] data) { @e`%'  
sort(data, IMPROVED_QUICK); REEs}88);'  
} FabDK :  
private static String[] name={ D9hV`fA  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %MA o<,ha  
}; 5X4 #T&.  
>#9 f{  
private static Sort[] impl=new Sort[]{ mNc?`G_R  
new InsertSort(), Z$a5vu*pg  
new BubbleSort(), Z%rMX}  
new SelectionSort(), -^R6U~  
new ShellSort(), C'Gj\  
new QuickSort(), [9hslk  
new ImprovedQuickSort(), g?TPRr~$9  
new MergeSort(), MXVQ90  
new ImprovedMergeSort(), t>~a/K"  
new HeapSort() 6\9 Zc-%  
}; v--Qbu  
<./r%3$;7  
public static String toString(int algorithm){ 2r zOh},RS  
return name[algorithm-1]; vS@;D7ep  
} PG51+#  
*h <_gn  
public static void sort(int[] data, int algorithm) { -VC k k  
impl[algorithm-1].sort(data); -l:4I6-hi  
} _S$ SL%;\  
rAv)k&l  
public static interface Sort { PUU "k:{  
public void sort(int[] data); QsO%m  
} \/wbk`2  
C>}@"eK  
public static void swap(int[] data, int i, int j) { Q+ i  
int temp = data; z(o zMH  
data = data[j]; &d%0[Ui`  
data[j] = temp; t9QnEP'  
} fV "gL(7  
} ' F,.y6QU  
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