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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。 i8Yl1nF  
插入排序: #HJF==  
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package org.rut.util.algorithm.support; &s\$&%|  
:BC 0f9  
import org.rut.util.algorithm.SortUtil; ;7K5Bo  
/** QKE$>G  
* @author treeroot 9'Pyo`hJ#U  
* @since 2006-2-2 S TVJu![  
* @version 1.0 %0Ulh6g;Dt  
*/ |.*),t3 (w  
public class InsertSort implements SortUtil.Sort{ HJ !)D~M{  
zVGjXuNa  
/* (non-Javadoc) 42Tjbten_u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Qkto4DQ5  
*/ !5? #^q  
public void sort(int[] data) { [j 'Ogm7"  
int temp; jF Bq>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bqsb (C  
} ^ Gq2"rDM  
} yodJGGAzk  
} 4+$<G/K  
;=5V)1~i1;  
} NQ'^ z  
8rGW G  
冒泡排序: 3wX{U8mrg  
,B5Ptf#  
package org.rut.util.algorithm.support; 0{BPT>'  
rf@/<Wu  
import org.rut.util.algorithm.SortUtil; <{[AG3/Zj4  
h<Yn0(.  
/** &oWWc$  
* @author treeroot ig")bt3s5  
* @since 2006-2-2 })M$#%(  
* @version 1.0 |n}W^}S5  
*/ mkk74NY  
public class BubbleSort implements SortUtil.Sort{ c1jHg2xim  
{,]BqFXv  
/* (non-Javadoc) MN$j{+!Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^;6~=@#*C  
*/ zt[TShD^  
public void sort(int[] data) { 0 u,=OvU  
int temp; PJAE~|a  
for(int i=0;i for(int j=data.length-1;j>i;j--){ j<szQ%tJlI  
if(data[j] SortUtil.swap(data,j,j-1); prlB9,3|C  
} &M6)-V4  
} U4 m[@wF  
} JAC W#'4hV  
} Xd)ba9{  
]n _-  
} PUltn}M  
`]LaX&u  
选择排序: >BrxJw#M  
E&{*{u4  
package org.rut.util.algorithm.support; (e= ksah3>  
s|pb0  
import org.rut.util.algorithm.SortUtil; ~XsS00TL`G  
Gqk"%irZ  
/** HAf.LdnzS  
* @author treeroot a_waLH/  
* @since 2006-2-2 }(a y(  
* @version 1.0 Te[[xhTyw  
*/ pvI(hjMYPk  
public class SelectionSort implements SortUtil.Sort { Uf4QQ `c#  
Rb#Z'1D'G  
/* {;n?c$r  
* (non-Javadoc) }E*d)n|  
* 9`4h"9dO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,\+tvrR4X  
*/ i_`YZ7Hxp  
public void sort(int[] data) { DECX18D  
int temp; / v5Pk.!o  
for (int i = 0; i < data.length; i++) { 7KRc^ *pZs  
int lowIndex = i; %b\xRt[0v7  
for (int j = data.length - 1; j > i; j--) { t<ftEJU"'w  
if (data[j] < data[lowIndex]) { S/~6%uJ  
lowIndex = j; r;|Bc$P  
} @T;O^rE~N  
} 6|T{BOW!d  
SortUtil.swap(data,i,lowIndex); [cXu<vjFM  
} O<6/0ub&+h  
} l>~:lBO  
q E$ .a[  
} "'t<R}t!A  
^ b-H  
Shell排序: z6Su`  
,=$yvZs4[]  
package org.rut.util.algorithm.support; _\@i&3hkx  
d2.n^Q"?3  
import org.rut.util.algorithm.SortUtil; "{z9 L+  
]DmqhK`  
/** Qbl6~>T  
* @author treeroot W.MJyem  
* @since 2006-2-2 45kMIh~~X  
* @version 1.0 R3?~+ y&  
*/ Vq9hAD|k  
public class ShellSort implements SortUtil.Sort{ %(6f  
mKe{y.  
/* (non-Javadoc) \lKQDct. -  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LaN4%[;X1-  
*/ ]3d&S5zU  
public void sort(int[] data) { 5Hr(9)  
for(int i=data.length/2;i>2;i/=2){ ( fdDFb#1  
for(int j=0;j insertSort(data,j,i); ;Ic3th%u  
} }s}9@kl;&  
} &CUkR6  
insertSort(data,0,1); >x2T '  
} wf|CE410  
!cSD9q*  
/** $ZcmE<7k  
* @param data ^jf$V #z0/  
* @param j D cus-,u~  
* @param i Y] P}7GZ  
*/ /3KEX{'@U  
private void insertSort(int[] data, int start, int inc) { yA%[ u.{  
int temp; ~@'|R%jJ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); JSGUl4N  
} De>pIN;B>  
} RK rBHqh@  
} ~RvU+D  
e% 5!  
} l' "<  
Nz!AR$  
快速排序: f{3FoN= z  
,x{5,K.yWq  
package org.rut.util.algorithm.support; h(G&X9*  
\GMudN  
import org.rut.util.algorithm.SortUtil; 6\::Ku4_2  
}}_WZ},h  
/** 0 |F (qR  
* @author treeroot 4?%0z) g  
* @since 2006-2-2 c#HocwP@  
* @version 1.0 5~rs55W  
*/ $<ZX};/D  
public class QuickSort implements SortUtil.Sort{ 0HNe44oI+D  
fcw \`.  
/* (non-Javadoc) A=XM(2{aN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H.>KYiv+  
*/ Ei}DA=:s  
public void sort(int[] data) { ?|s[/zPS=  
quickSort(data,0,data.length-1); xFpJ#S&  
} ^xqh!  
private void quickSort(int[] data,int i,int j){ c#Y9L+O  
int pivotIndex=(i+j)/2; u{H_q&1  
file://swap Pyyx/u+?@  
SortUtil.swap(data,pivotIndex,j); brTB /(E  
7XR[`Tn9<  
int k=partition(data,i-1,j,data[j]); P `2Rte6s  
SortUtil.swap(data,k,j); IloHU6h'  
if((k-i)>1) quickSort(data,i,k-1); ;nh7Elk  
if((j-k)>1) quickSort(data,k+1,j); |#-Oz#Eg'  
UI!EIZ*~  
} G53!wIW2:  
/** 6b]vHT|p  
* @param data pn =S%Qf]  
* @param i pAa{,,Qc  
* @param j \{UiGCK  
* @return l;|1C[V  
*/ 0j_!)B  
private int partition(int[] data, int l, int r,int pivot) { 'fVk1Qj^  
do{ GGLVv)  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~+T~}S  
SortUtil.swap(data,l,r); [xE\IqwM  
} j; +nnpg  
while(l SortUtil.swap(data,l,r); 4p1{Ady  
return l; @NyCMe;]  
} [n:R]|^a  
E3gQ`+wNg?  
} wwp vmb  
Q0 ^?jh  
改进后的快速排序: A$5!]+  
-7pZRnv  
package org.rut.util.algorithm.support; l[.pI];T  
PMTyiwlm  
import org.rut.util.algorithm.SortUtil; UhEnW8^bz1  
W0nRUAo[  
/** I`y}Ky<q  
* @author treeroot FijzO  
* @since 2006-2-2 ] xH `  
* @version 1.0 L^0jyp  
*/ SgY>$gP9S  
public class ImprovedQuickSort implements SortUtil.Sort { JgxOxZS`@  
IG bQ L  
private static int MAX_STACK_SIZE=4096; J7l1-  
private static int THRESHOLD=10; ZM)a4h,kcm  
/* (non-Javadoc) 0#yo\McZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y)a 7osML  
*/ @|cas|U.r  
public void sort(int[] data) { a]ftE\99  
int[] stack=new int[MAX_STACK_SIZE]; Y)!5Z.K  
"C0oFRk  
int top=-1; 5q8bM.k\7N  
int pivot; U| y+k`  
int pivotIndex,l,r; )P,jpE8  
)D#*Q~   
stack[++top]=0; YL{LdM-xM  
stack[++top]=data.length-1; '7E?|B0],  
4{J%`H`Q!  
while(top>0){ Wm"W@LPx5  
int j=stack[top--]; K(Cv9YQ  
int i=stack[top--]; #nu?b?X'  
4K4?Q+?  
pivotIndex=(i+j)/2; 2pB@qi-]  
pivot=data[pivotIndex]; jmAWto}.  
e <IT2tv>u  
SortUtil.swap(data,pivotIndex,j); jt;,7Ek  
/O&j1g@  
file://partition U`:$1*(`  
l=i-1; \6sp"KqP  
r=j; mT)iN`$Y@  
do{ C$?dkmIt  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /gPn2e;  
SortUtil.swap(data,l,r); 3 D+dM0wM  
} jLZ~9FXF2  
while(l SortUtil.swap(data,l,r); \a}%/_M\  
SortUtil.swap(data,l,j); ffSecoX  
!rwv~9I  
if((l-i)>THRESHOLD){ //AS44^IS  
stack[++top]=i; #5'9T:8  
stack[++top]=l-1; !qy/'v4  
} )WBTqML[  
if((j-l)>THRESHOLD){ :.Np7[~{  
stack[++top]=l+1; 'KXvn0  
stack[++top]=j; tTP"*Bb  
} CM~)\prks  
0A|.ch  
} Cj ykM])  
file://new InsertSort().sort(data); 1'}~;?_  
insertSort(data); zs7K :OlkA  
} jMZ{>l.v  
/** 4Kx;F 9!%~  
* @param data wLNO\JP'  
*/ !v94FkS>  
private void insertSort(int[] data) { jtN2%w;  
int temp; RELLQpz3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CxwZ$0  
} + e4o~ p  
} $0{c =r9  
} iGm[fxQ|  
k+%6 :r,r&  
} e6]u5;B r  
:uqsRFo&4  
归并排序: V~ZAs+(2Z  
Bm.%bA>  
package org.rut.util.algorithm.support; &|55:Y87  
\J:/l|h  
import org.rut.util.algorithm.SortUtil; y<.1+TG  
n Hy|  
/** _kgw+NA&-H  
* @author treeroot wD"Y1?Mr  
* @since 2006-2-2 \~U8<z  
* @version 1.0 JZN'U<R  
*/ s8eFEi  
public class MergeSort implements SortUtil.Sort{ W}nD#9tL  
$I+QyKO9k  
/* (non-Javadoc) HPm12&8,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C:zK{+  
*/  s y#CR4X  
public void sort(int[] data) { e=TB/W_  
int[] temp=new int[data.length]; b6Dve]  
mergeSort(data,temp,0,data.length-1); hcwKi  
} LbvnV~S  
*N<~"D  
private void mergeSort(int[] data,int[] temp,int l,int r){ hb zU?_}  
int mid=(l+r)/2; a\aJw[d{  
if(l==r) return ; # (T  
mergeSort(data,temp,l,mid); ti3T ?_  
mergeSort(data,temp,mid+1,r); g!cTG-bh>J  
for(int i=l;i<=r;i++){ TDk'  
temp=data; iIA&\'|;i  
} M-"%4^8_  
int i1=l; jBarYg  
int i2=mid+1; Hj$JXo[U  
for(int cur=l;cur<=r;cur++){ 0vt?yD  
if(i1==mid+1) G2zfdgW${/  
data[cur]=temp[i2++]; U,~\}$<I  
else if(i2>r) [C9->`(`  
data[cur]=temp[i1++]; h /@G[5E  
else if(temp[i1] data[cur]=temp[i1++]; tJ i#bg%  
else E9YR *P4$  
data[cur]=temp[i2++]; VW$Hzx_z  
} +r"{$'{^  
} 8|OsVIe%  
pMKnA. |  
} ^ ,d!K2`  
 w:#yu  
改进后的归并排序: kW3V"twx  
#\_N-bVu  
package org.rut.util.algorithm.support; a4Fe MCvV9  
\f5$L`  
import org.rut.util.algorithm.SortUtil; lqTTTk  
y}FTLX $  
/** xJ:15eDC  
* @author treeroot >A;Mf*E  
* @since 2006-2-2 m?V4r#t  
* @version 1.0  bF0 y`  
*/ 4%0eX]  
public class ImprovedMergeSort implements SortUtil.Sort { 4U*J{''L  
W MU9tq[  
private static final int THRESHOLD = 10; !MOVv\@O  
hjtkq .@  
/* #qtAFIm'  
* (non-Javadoc) a4Qr\"Qm  
* ]<V[H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~D PjTR  
*/ yO; r]`j0  
public void sort(int[] data) { {m.l{<H  
int[] temp=new int[data.length]; $h"tg9L^)  
mergeSort(data,temp,0,data.length-1); ?~Fk_#jz,@  
} 6-c3v  
\!Cix}}1  
private void mergeSort(int[] data, int[] temp, int l, int r) { Gt3V}"B3\  
int i, j, k; D pI)qg#>V  
int mid = (l + r) / 2; m-dyvW+  
if (l == r) AK]{^Hvz  
return; ) wtVFG  
if ((mid - l) >= THRESHOLD) >7[. {Y  
mergeSort(data, temp, l, mid); ;Kob]b  
else 01uMbtM  
insertSort(data, l, mid - l + 1); Y?a*-"  
if ((r - mid) > THRESHOLD) wC+_S*M-K  
mergeSort(data, temp, mid + 1, r); $6kVhE!;  
else $vlq]6V8  
insertSort(data, mid + 1, r - mid); PGF=q|j9K  
* 7u~`  
for (i = l; i <= mid; i++) { _~ZNX+4  
temp = data; /7/d u[P6  
} OX d617  
for (j = 1; j <= r - mid; j++) { B2w\  
temp[r - j + 1] = data[j + mid]; -!f)P=S  
} "l&=a1l  
int a = temp[l]; 8QDs4Bv|  
int b = temp[r]; U` uP^  
for (i = l, j = r, k = l; k <= r; k++) { r BQFC 4L  
if (a < b) { $hZb<Xz  
data[k] = temp[i++]; sEP-jEuwG  
a = temp; fl#gWAM  
} else { (Z;;v|F.i=  
data[k] = temp[j--]; <5X?6*Qvr  
b = temp[j]; r~&"D#)sy  
} #; CC"  
} >>oR@  
} #9M6 q  
YNyaz\L  
/** veIR)i@dx  
* @param data V3DXoRE-8i  
* @param l pLjet~2}iJ  
* @param i v10p]=HmO  
*/ _H@Y%"ZHJ6  
private void insertSort(int[] data, int start, int len) { 5N<f\W,  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 78zjC6}`  
} (hWr!(>C4]  
} v6(Yz[  
} 5G"LuA  
} +RW P;rk  
HI)MBrj;r  
堆排序: qDHiyg^u  
03$-U0.;-  
package org.rut.util.algorithm.support; cVya~ *  
_ZX"gH x  
import org.rut.util.algorithm.SortUtil; G|MjKe4}  
H'7AIY }  
/** .@KpN*`KH  
* @author treeroot golr,+LSo  
* @since 2006-2-2 {@, } M  
* @version 1.0 Ww-%s9N<  
*/ 9c9F C  
public class HeapSort implements SortUtil.Sort{ BNns#Q8a  
*W aL}i(P1  
/* (non-Javadoc) GO0Spf_Gh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AT Dm$ *  
*/ U  ?'$E\  
public void sort(int[] data) { E`s9SE  
MaxHeap h=new MaxHeap(); 3jR,lEJyj  
h.init(data); {,EOSta  
for(int i=0;i h.remove(); l,AK  
System.arraycopy(h.queue,1,data,0,data.length); DY1?37h  
} jyQ Bx  
;Yo9e~  
private static class MaxHeap{ wgfy; #  
2r;^OWwr?  
void init(int[] data){ 1&N|k;#QS  
this.queue=new int[data.length+1]; :&: IZkO  
for(int i=0;i queue[++size]=data; ;]YQ WK  
fixUp(size); F[m"eEX  
} oz $T.  
} juOOD   
0s)B~  
private int size=0; i\hH .7G1  
f[v~U<\R  
private int[] queue; R-nC+)^  
uMOm<kn  
public int get() { %SORs(4  
return queue[1]; 7 +A-S9P)  
} )P4#P2  
Vfew )]I  
public void remove() { D~_|`D5WK  
SortUtil.swap(queue,1,size--); `s74g0h  
fixDown(1); kB_uU !G  
} ] =ar&1}J  
file://fixdown .C=&` ;Vs  
private void fixDown(int k) { 3&i8C,u]/O  
int j; obWBX'  
while ((j = k << 1) <= size) { St/<\Y,wr  
if (j < size %26amp;%26amp; queue[j] j++; {6MLbL{  
if (queue[k]>queue[j]) file://不用交换 /?X1>A:*  
break; X&qRanOP;z  
SortUtil.swap(queue,j,k); JmN,:bI  
k = j; w6tb vhcmU  
} jRIjFn|~{Y  
} pl62mp!  
private void fixUp(int k) { [XFZ2'OO  
while (k > 1) { x" 21 Jh  
int j = k >> 1; }gi>Z  
if (queue[j]>queue[k]) !M:m(6E1  
break; #6{"c r6l  
SortUtil.swap(queue,j,k); il^SGH  
k = j; E.W7`zl  
} tV2SX7N  
} o?A/  
5wXe^G  
} .&2pZ  
+kCVi  
} W"9iFj X  
N{n}]Js1D-  
SortUtil: 6_/oVvd  
!ZP1?l30  
package org.rut.util.algorithm; v8g3]MVj3  
QrDrd A  
import org.rut.util.algorithm.support.BubbleSort; L^PZ\OC  
import org.rut.util.algorithm.support.HeapSort; q|m8G  
import org.rut.util.algorithm.support.ImprovedMergeSort; 9R.IYnq  
import org.rut.util.algorithm.support.ImprovedQuickSort; (?-5p;  
import org.rut.util.algorithm.support.InsertSort; wqo2iRql  
import org.rut.util.algorithm.support.MergeSort; ?QO)b9  
import org.rut.util.algorithm.support.QuickSort; Re?sopg0r  
import org.rut.util.algorithm.support.SelectionSort; @(.?e<  
import org.rut.util.algorithm.support.ShellSort; (zkh`8L  
 01I5,Dm  
/** <x@\3{{U  
* @author treeroot e2w$":6>  
* @since 2006-2-2 ixN>KwH  
* @version 1.0 aq3evm  
*/ |7WzTz  
public class SortUtil { &|<~J (L;  
public final static int INSERT = 1; .UbmU^y|  
public final static int BUBBLE = 2; vj0`[X   
public final static int SELECTION = 3; j}8IT  
public final static int SHELL = 4; /1++ 8=  
public final static int QUICK = 5; G 8|[.n  
public final static int IMPROVED_QUICK = 6; AG) N^yd  
public final static int MERGE = 7; [:$j<}UmB  
public final static int IMPROVED_MERGE = 8; /b@0HL?  
public final static int HEAP = 9; >K#Z]k  
Jl3l\I'  
public static void sort(int[] data) { AF D/ J  
sort(data, IMPROVED_QUICK); 77/y{#Sk  
} +Cx~4zEq  
private static String[] name={ sw*k(i  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {npKdX  
}; aA%$<ItH  
>rlQY>5pH  
private static Sort[] impl=new Sort[]{ "%ag^v9  
new InsertSort(), ;}K1c+m!5V  
new BubbleSort(), aq"E@fb  
new SelectionSort(), rBs7,h  
new ShellSort(), y5?T`ts,#  
new QuickSort(), Faa:h#  
new ImprovedQuickSort(), Q"8)'dL'  
new MergeSort(), 7d/wT+f  
new ImprovedMergeSort(), n);2b\&  
new HeapSort() S|;a=K&hS  
}; _5M!ec  
)?'sw5C  
public static String toString(int algorithm){ ,)V*xpp  
return name[algorithm-1]; +`f gn9p  
} do*`-SDy  
R#tz"T@  
public static void sort(int[] data, int algorithm) { WlP@Tm5g/  
impl[algorithm-1].sort(data); jLvI!q   
} 7|zt'.56[  
`]]gD EPG{  
public static interface Sort { 4q@o4C<0  
public void sort(int[] data); b7v] g]*  
} wd*T"V3  
F-k1yZ?^  
public static void swap(int[] data, int i, int j) { 8!>uC&bE8  
int temp = data; z1!ya#,$  
data = data[j]; m|~,#d@  
data[j] = temp; f]$ g9H  
} %H<w.]>  
} _KmpC>J+  
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