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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。 s#Y7*?Sm  
插入排序: 7Sv5fLu2  
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package org.rut.util.algorithm.support; xMGd'l?  
l|QFNW[i  
import org.rut.util.algorithm.SortUtil; z+B  
/** G,* uj0g  
* @author treeroot K<9MK>T  
* @since 2006-2-2 0`Qs=R`OM  
* @version 1.0 6h*bcb#C  
*/ J3JRWy@?P  
public class InsertSort implements SortUtil.Sort{ iQj{J1V  
jQlK-U=oi  
/* (non-Javadoc) rG%_O$_dO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SmEd'YD!J  
*/ x@\'@>_GM  
public void sort(int[] data) { G8c}re   
int temp; 6Kc7@oO~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NOr*+N\  
} L ]'CA^N  
} 2%%U)|39mB  
} aRKG)0=  
WC&Ltw8  
} ,<WykeC  
#IJKMSGw?E  
冒泡排序: cG"<*Xi<  
s-DL=MD  
package org.rut.util.algorithm.support; vK>^#b3  
q&S.C9W  
import org.rut.util.algorithm.SortUtil; Mj;'vm7#'  
_C#( )#  
/** H~K2`Cr)4  
* @author treeroot MX_a]$\ :n  
* @since 2006-2-2 l;FgX+)  
* @version 1.0 R20GjWy=  
*/ KD*4n'm!>  
public class BubbleSort implements SortUtil.Sort{ bg. KkJMrR  
{v'Fg  
/* (non-Javadoc) ! \Kh\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hx0,kOh)  
*/ pjn%CR`;  
public void sort(int[] data) { a5S/ O;ry  
int temp; B{KD  ]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ fYPU'"hzG  
if(data[j] SortUtil.swap(data,j,j-1); 2|o$eq3t  
} vw 2@}#\:  
} 6%y: hLT  
} by[(9+/z$  
} k/Ro74f=  
wd0ACF  
} WSwmX3rn  
"Y0[rSz,UW  
选择排序: '.<"jZ  
m$: a|'mS  
package org.rut.util.algorithm.support; !XC7F UO  
?P]md9$(+e  
import org.rut.util.algorithm.SortUtil; ,i.P= o  
5!%/j,?  
/** C#0Wo  
* @author treeroot '2#fkH[.  
* @since 2006-2-2 >>xV-1h:  
* @version 1.0 #nhAW  
*/ V lNzm  
public class SelectionSort implements SortUtil.Sort { FeMu`|2  
A*i_- ;W)  
/* ( #Aq*2Z.  
* (non-Javadoc) ;OyM~T gI  
* @/iLC6QF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ti% e.p0[  
*/ Uij$ eBN  
public void sort(int[] data) { L  *@>/N  
int temp; Cu7iHhY5  
for (int i = 0; i < data.length; i++) { 5xKR ]u  
int lowIndex = i; *?'T8yf^  
for (int j = data.length - 1; j > i; j--) { B9-=.2.WU  
if (data[j] < data[lowIndex]) { ,:,|A/U  
lowIndex = j; 9] \vw  
} 5+Ut]AL5  
} n|6yz[N  
SortUtil.swap(data,i,lowIndex); K.7gd1I  
} `9gx-')]\  
} ;_ton?bF  
_v,n~a}&  
} P.7B]&T6  
lU& IS?^?  
Shell排序: iiscm\  
i[n 1}E.@  
package org.rut.util.algorithm.support; S3f BZIPp  
/#5ZP\e  
import org.rut.util.algorithm.SortUtil; WI3!?>d  
)]R8 $S  
/** "bH ~CG:Y  
* @author treeroot q<7n5kJ~  
* @since 2006-2-2 2{N0.  |5  
* @version 1.0 `r V,<  
*/ |<$O5b'  
public class ShellSort implements SortUtil.Sort{ kA0 ^~  
VxoMK7'O=/  
/* (non-Javadoc) +\Q@7Lj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rz*Jmn b  
*/ Ek0.r)Nw  
public void sort(int[] data) { {n'}S(  
for(int i=data.length/2;i>2;i/=2){ M}u2aW2]X  
for(int j=0;j insertSort(data,j,i); /2q%'"x(  
} 3]P=co@  
} ?`$4ZDM  
insertSort(data,0,1); |Gi/=[Tp  
} +L6$Xm5DAv  
ly@CX((W  
/** zx*f*L,6F  
* @param data ?1sY S  
* @param j #96a7K  
* @param i ;Wdo*ysW  
*/ LTHS&3% 2  
private void insertSort(int[] data, int start, int inc) { S;~_9i]upe  
int temp; I%Z &i-33y  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); b`mEnI VIz  
} Pc<ZfO #  
} vvCGzOv  
} JAK*HA  
" B1' K8  
} [cq>QMW  
W2^R$"U  
快速排序: DS yE   
\b->AXe8  
package org.rut.util.algorithm.support; lk|/N^8M  
4M}/PoJ  
import org.rut.util.algorithm.SortUtil; <:w7^m  
2+HiaYDZ  
/** #]2u!a ma  
* @author treeroot .:}\Z27-c  
* @since 2006-2-2 t<tBOesQ  
* @version 1.0 _"=~aMXC.)  
*/ _+i-)  
public class QuickSort implements SortUtil.Sort{ E_P]f%  
BKk*<WMD  
/* (non-Javadoc) tq[C"| dH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #@ G2n@Hj  
*/ = j -  
public void sort(int[] data) { "q8wEu,z[  
quickSort(data,0,data.length-1); cP,jC(<N  
} W7 $yE},z  
private void quickSort(int[] data,int i,int j){ &oBJY'1  
int pivotIndex=(i+j)/2; r\zK>GVm_  
file://swap P+xZaf H  
SortUtil.swap(data,pivotIndex,j); & CgLF]  
^H'#*b0u  
int k=partition(data,i-1,j,data[j]); K^+B"  
SortUtil.swap(data,k,j); Q5ux**(Wr  
if((k-i)>1) quickSort(data,i,k-1); _B2t|uQ  
if((j-k)>1) quickSort(data,k+1,j); Wo&i)S<i0F  
%zGPF  
} h!MT5B)r.  
/** ETtR*5Y 5  
* @param data =S,^"D\Z:  
* @param i <7XdT  
* @param j b\?`721BG  
* @return Y+E@afsKs  
*/ $[d}g  
private int partition(int[] data, int l, int r,int pivot) { eUl[gHP  
do{ iZ UBw  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y:wds=lA  
SortUtil.swap(data,l,r); +=O:z *O  
} ;iEqa"gO  
while(l SortUtil.swap(data,l,r); h W-[omr0  
return l; P VPwYmte  
} ;Zw28!#Rt  
F~ :5/-zs  
} b$BUo8O}  
z9gZ/d   
改进后的快速排序: S9.jc@#.`  
7W*OyH^  
package org.rut.util.algorithm.support; (L\tp> E-  
wFe</U-';  
import org.rut.util.algorithm.SortUtil; W\Gg!XsLk  
-`( :L[  
/** eWFlJ;=  
* @author treeroot Rj8l]m6U9  
* @since 2006-2-2 \%K6T)9  
* @version 1.0 9X-DR  
*/ =LC5o2bLy  
public class ImprovedQuickSort implements SortUtil.Sort { = #`FXO1C  
Q{%ow:;s*  
private static int MAX_STACK_SIZE=4096; ',.Xn`c  
private static int THRESHOLD=10; `bi5#xR  
/* (non-Javadoc) GRNH!:e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )}EwEM  
*/ 87-oR}/r  
public void sort(int[] data) { N7[~Y2i  
int[] stack=new int[MAX_STACK_SIZE]; &CS=*)>$  
up`6IWlLE  
int top=-1; *Hs5MXNu  
int pivot; Lczcz"t  
int pivotIndex,l,r; h0GXN\xI  
hAY_dM  
stack[++top]=0; Gce![<|ph  
stack[++top]=data.length-1; ow&R~_  
vt1!|2{ h  
while(top>0){ v;OA hFr|  
int j=stack[top--]; I;No++N0  
int i=stack[top--]; %c&h:7);  
3KqylC &.  
pivotIndex=(i+j)/2; iaMZ37  
pivot=data[pivotIndex]; g3y44G CV  
(* p |Kzu  
SortUtil.swap(data,pivotIndex,j); hfY2pG9N  
! _QU-  
file://partition @E}4LTB  
l=i-1; se?nx7~  
r=j; p4/D%*G^`  
do{ ;2U`?"  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0g1uM:;  
SortUtil.swap(data,l,r); ] `lTkh  
} O)hNHIF  
while(l SortUtil.swap(data,l,r); f#!Ljjf$;  
SortUtil.swap(data,l,j); 8r~4iVwg  
H6L`239u  
if((l-i)>THRESHOLD){ {3l] /X3  
stack[++top]=i; :/u EPki  
stack[++top]=l-1; #jnb6v=5v  
} a^,Xm(Wb}  
if((j-l)>THRESHOLD){ gG#M-2P  
stack[++top]=l+1; ?O28Q DUI  
stack[++top]=j; |kjk{  
} Cjw|.c`  
1v`*%95  
} _- { >e  
file://new InsertSort().sort(data); ]":PO4M$*  
insertSort(data); ,Q^.SHP8  
} se_1 wCYz  
/** 1"i/*}M  
* @param data H=*;3gM,'  
*/ Mq-;sPsFP  
private void insertSort(int[] data) { -cMqq$  
int temp; Obbjl@]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \h:$q E7  
} 0PZpE "$X  
} At"@`1n_u'  
} b8Y-!] F  
}e1f kjWk  
} h]I ^%7  
P#iBwmwN+.  
归并排序: yAaMYF@  
UZqr6A(/H  
package org.rut.util.algorithm.support; y<kW2<?  
oh|Q&R  
import org.rut.util.algorithm.SortUtil; 1X]?-+',.  
cZA l.}/  
/** x2 l~aw#?  
* @author treeroot e~xN[Q\0]  
* @since 2006-2-2 |'.\}xt7  
* @version 1.0 BjSLbw-C  
*/ )[>{ Ie2  
public class MergeSort implements SortUtil.Sort{ h^cM#L^B  
m$ "B=b2  
/* (non-Javadoc) \:8 >@Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0ZTT^2R  
*/ y%f'7YZ4  
public void sort(int[] data) { T$!. :v  
int[] temp=new int[data.length]; af.yC[  
mergeSort(data,temp,0,data.length-1); 67 ^?v)|  
} N_wB  
ca5Ir<mL  
private void mergeSort(int[] data,int[] temp,int l,int r){ L2+~I<|>  
int mid=(l+r)/2; }qxw Nmx  
if(l==r) return ; 6VW&An[6r  
mergeSort(data,temp,l,mid); +hGr2%*0f  
mergeSort(data,temp,mid+1,r); I vO#tI  
for(int i=l;i<=r;i++){ Tw 8$6KUW  
temp=data; g6MK~JG$?h  
}  BVU>M*k  
int i1=l; q9|'!m5K  
int i2=mid+1; `5:b=^'D /  
for(int cur=l;cur<=r;cur++){ RAPR-I;{  
if(i1==mid+1) mSr(PIH{\  
data[cur]=temp[i2++]; PCtf&U  
else if(i2>r) " 5,'K~hz  
data[cur]=temp[i1++]; '_>8_  
else if(temp[i1] data[cur]=temp[i1++]; 'Y `or14E  
else qi!+ Ceo}  
data[cur]=temp[i2++]; 5NH NnDhuL  
} T@Mrbravc  
} lG6P+ Z/nf  
'a[|'  
} yJNQO'wcv  
@X5F$=aqZr  
改进后的归并排序: @#rF8;  
g\:(1oY  
package org.rut.util.algorithm.support; l]C#bL>i  
P9c!   
import org.rut.util.algorithm.SortUtil; br`cxgZ0"  
~qT5F)$B-  
/**  b"iPuN!p  
* @author treeroot Dn~c  
* @since 2006-2-2 yH/m@#  
* @version 1.0 _TEjB:9eY  
*/ R.^ Y'TLyc  
public class ImprovedMergeSort implements SortUtil.Sort { dg-nv]7  
b@`h]]~:  
private static final int THRESHOLD = 10; Bq@_/*'*Y  
bi~1d"j  
/* gM>geWB<  
* (non-Javadoc) v[57LB  
* ebfT%_N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 05hjC  
*/ LD/NMb  
public void sort(int[] data) { a]\l:r  
int[] temp=new int[data.length]; 4h~CDy%_  
mergeSort(data,temp,0,data.length-1); ip8%9fG\>  
} _Fkz^B*  
B63puX{u#  
private void mergeSort(int[] data, int[] temp, int l, int r) { 07b =Zhh  
int i, j, k; "Rc Ny~  
int mid = (l + r) / 2; i24t$7q  
if (l == r) eCFMWFhC  
return; Q,v/]bXd  
if ((mid - l) >= THRESHOLD) 9lqH  
mergeSort(data, temp, l, mid); %[B^b)2  
else /xq^]0xy  
insertSort(data, l, mid - l + 1); \:y oS>G  
if ((r - mid) > THRESHOLD) QNWGUg4*&  
mergeSort(data, temp, mid + 1, r); z* k(` '  
else h>k[  
insertSort(data, mid + 1, r - mid); < #FxI  
Nux  
for (i = l; i <= mid; i++) { 4]G J+a  
temp = data; FJQ=611@  
} Uhs/F:E[A  
for (j = 1; j <= r - mid; j++) { 4Dy|YH$>S  
temp[r - j + 1] = data[j + mid]; *\gYs{,  
} TAB'oLNp  
int a = temp[l]; 1 K(0tG:5  
int b = temp[r]; 0#Ae<  
for (i = l, j = r, k = l; k <= r; k++) { 717S3knlv  
if (a < b) { O#Ma Z.=  
data[k] = temp[i++]; N1iP!m9Q  
a = temp; )5Wt(p:T6_  
} else { 1Be/(pSc  
data[k] = temp[j--]; m941 Y  
b = temp[j]; vB<9M-sa0  
} {:] u 6l  
} \Vb|bw'e(  
} q{Ao j  
P"[\p|[U  
/** owviIZFe  
* @param data X{Ij30Bmv  
* @param l Dr K@y8  
* @param i n{$! ]^>  
*/ A3^_'K  
private void insertSort(int[] data, int start, int len) { L.2!Q3&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Y6G`p  
} 3!M|Sf<s  
} 'C7$,H'  
} 70 -nAv  
} twMDEw#VL  
u+ b `aB  
堆排序: Z\r?>2  
O\F$~YQ  
package org.rut.util.algorithm.support; go9tvK  
Yz)+UF,  
import org.rut.util.algorithm.SortUtil; 4OeH}@a  
v` h n9O  
/** [nA1WFfM  
* @author treeroot |"g+p)A  
* @since 2006-2-2 R0~w F>  
* @version 1.0 !LM9  
*/ FQBE1h@k0u  
public class HeapSort implements SortUtil.Sort{ ~^bf1W[  
BdrYc^?JL]  
/* (non-Javadoc) (<2!^v0.M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y!8m7a  
*/ E(F?o.b  
public void sort(int[] data) { jP#I](\eG  
MaxHeap h=new MaxHeap(); `*WzHDv5p  
h.init(data); IY hwFw 5O  
for(int i=0;i h.remove(); hx!:F"#  
System.arraycopy(h.queue,1,data,0,data.length); .cm9&&"Z  
} o-<XR9,N*  
&'k:?@J[  
private static class MaxHeap{ 6<fcG  
\1sWmN6  
void init(int[] data){ n"w>Y)C(X)  
this.queue=new int[data.length+1]; 0YZ66VN!  
for(int i=0;i queue[++size]=data; :{,k F  
fixUp(size); cs9"0&JX  
} ioBYxbY`  
} ^+w1:C5  
3tW}a`z9  
private int size=0; ivg W[]  
''($E /  
private int[] queue; xwu b-yz  
RK/>5  
public int get() { Vkf c&+  
return queue[1]; OP|X-  
} b ,x$wP+  
b#-=Dbe  
public void remove() { E|3[$?=R  
SortUtil.swap(queue,1,size--); / hg)=p  
fixDown(1); @HE<\Z{ KI  
} .P#t"oW}  
file://fixdown uuQsK. S  
private void fixDown(int k) { _ h/:r1  
int j; =)}Yw)  
while ((j = k << 1) <= size) { j-d542"  
if (j < size %26amp;%26amp; queue[j] j++; woa|h"T  
if (queue[k]>queue[j]) file://不用交换 %Z8wUG  
break; T|p%4hH  
SortUtil.swap(queue,j,k); r6&+pSA>  
k = j; @^%YOorr  
} g_@b- :$Yq  
} h.\p+Qw.  
private void fixUp(int k) { a4XK.[O  
while (k > 1) { MoXai0d%  
int j = k >> 1; jX .' G   
if (queue[j]>queue[k]) YZAQt* x  
break; +TAyCxfmt  
SortUtil.swap(queue,j,k); ]c1#_MW  
k = j; kzVK%[/  
} wlQ @3RN>  
} p+228K ;H  
.l,]yWwfK  
} =QIu3%&  
*x_e] /}  
} )X3 |[4R  
]@m`bs_6  
SortUtil: #\ECQF  
7Y)i>[u3  
package org.rut.util.algorithm; V/xjI<,  
0+K<;5"63d  
import org.rut.util.algorithm.support.BubbleSort; `a[ V_4wO  
import org.rut.util.algorithm.support.HeapSort; ;Fd1:"1pP  
import org.rut.util.algorithm.support.ImprovedMergeSort; /8 y v8  
import org.rut.util.algorithm.support.ImprovedQuickSort; *TrpW?]Y&  
import org.rut.util.algorithm.support.InsertSort; J3XG?' }  
import org.rut.util.algorithm.support.MergeSort; MAp#1+k  
import org.rut.util.algorithm.support.QuickSort; ..x 2  
import org.rut.util.algorithm.support.SelectionSort; P'<j<h6  
import org.rut.util.algorithm.support.ShellSort; nt@uVwfQ  
N;DE,[:<  
/** G^Y^)pc]   
* @author treeroot )LsUO#%DO  
* @since 2006-2-2 *to#ZMR;!  
* @version 1.0 i*8j|  
*/ ] f5vk  
public class SortUtil { K+d{R=s^  
public final static int INSERT = 1; (:^YfG~e  
public final static int BUBBLE = 2; {P3gMv;  
public final static int SELECTION = 3; (Q.tH  
public final static int SHELL = 4; sX ]gL  
public final static int QUICK = 5; K"!U&`T  
public final static int IMPROVED_QUICK = 6; t qUBl?i  
public final static int MERGE = 7; 8g=];@z  
public final static int IMPROVED_MERGE = 8; cG(%P$  
public final static int HEAP = 9; zcuz @  
{b-SK5%]L  
public static void sort(int[] data) { nkz<t   
sort(data, IMPROVED_QUICK); xVrLoAw  
} ]z2x`P^oI  
private static String[] name={ 2&=CC4<!d  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %q.5; L  
}; |[p]]) o  
B`w8d[cL7  
private static Sort[] impl=new Sort[]{ a|DCpU}  
new InsertSort(), t*fH&8(  
new BubbleSort(), 3EH@tlTl  
new SelectionSort(), qW /&.  
new ShellSort(), Nrq/Pkmy  
new QuickSort(), A"0Yn(awWu  
new ImprovedQuickSort(), D~TlG@Pq  
new MergeSort(), v?}rA%so  
new ImprovedMergeSort(), ,Xg^rV~]  
new HeapSort() (,|eE)+  
}; Bc`L ]<  
a '?LC)^  
public static String toString(int algorithm){ UR(i_T&w  
return name[algorithm-1]; t0za%q!fK<  
} xiL+s-   
sGh TP/  
public static void sort(int[] data, int algorithm) { JxKd  
impl[algorithm-1].sort(data); /8u}VYE  
} :H#D4O8UiH  
"yl6WG# J  
public static interface Sort { >jnx2$  
public void sort(int[] data); :;IZ|hU  
} "Z~@"JLb%  
t3*.Bm:^  
public static void swap(int[] data, int i, int j) { }2^qM^,0  
int temp = data; W e*uZ?+  
data = data[j]; $@w ,9J\  
data[j] = temp; ^E)8Sb9t  
} Galh _;=  
} oTr,zRL  
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