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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。 jE wt1S V  
插入排序: 3<xDxj 0<  
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package org.rut.util.algorithm.support; 1D3 8T  
QxN1N^a0  
import org.rut.util.algorithm.SortUtil; (Q @'fb9z  
/** 9zS   
* @author treeroot .c:h!-D;  
* @since 2006-2-2 kN78j  
* @version 1.0 K[ [6A:  
*/ D,R',(3  
public class InsertSort implements SortUtil.Sort{ qTN%9!0@9  
y4LUC;[n  
/* (non-Javadoc) #r]Z2Y]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .c ~z^6x  
*/ pf107S  
public void sort(int[] data) { 1DhC,)+D}q  
int temp; >Q!}tbg~9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1+WVh7gF  
} biU_ImJ>0  
} Z/:F)c,x  
} J{-`&I'b  
<+-n lK4  
} <n06(9BF  
7=9>yba)^  
冒泡排序: IsE3-X|  
fn=A_ i  
package org.rut.util.algorithm.support; l>b'b e9  
8cG`We8l&  
import org.rut.util.algorithm.SortUtil; ]W14'Z  
<<CWN(hQWO  
/** !cYID \}S,  
* @author treeroot Ec}%!p_$  
* @since 2006-2-2 bTmhz  
* @version 1.0 h=gtuaR4  
*/ zMu9A|  
public class BubbleSort implements SortUtil.Sort{ NRJp8G Z%U  
qbfX(`nS  
/* (non-Javadoc) D@gC(&U/6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 05T?c{ ;  
*/ T+&fUhSy  
public void sort(int[] data) { -43>?m/a  
int temp; n}IGxum8`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ qb=2J5su  
if(data[j] SortUtil.swap(data,j,j-1); a;Y:UwD9*  
} 5rB>)p05[  
} X"+p=PGZK  
} {qi #  
} _Ffg"xoC  
} SW p~3P  
} Ovk=s,a)K  
V~j^   
选择排序: CU\gx*=E  
QJ;dw8  
package org.rut.util.algorithm.support; h`\ $8 oV  
f0sLe 3  
import org.rut.util.algorithm.SortUtil; 6[k<&;  
6`Tx meIP  
/** \{:A&X~\!  
* @author treeroot RVttk )Ny  
* @since 2006-2-2 5tpC$4m  
* @version 1.0 wrgB =o  
*/ zhs @ YMY  
public class SelectionSort implements SortUtil.Sort { -o%? ]S  
rP7 QW)NF  
/* AF"7 _  
* (non-Javadoc) }i"[5:  
* k-=lt \?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Eqz|eS*6  
*/ T^|k`  
public void sort(int[] data) { R)JH D7 1  
int temp; 0l[52eZ/  
for (int i = 0; i < data.length; i++) { v:4j 3J$z  
int lowIndex = i; 3{?X>6T  
for (int j = data.length - 1; j > i; j--) { =YgH-{  
if (data[j] < data[lowIndex]) { R&.&x'<  
lowIndex = j; }WIkNG4{Z  
} Eej Lso#\  
} %_5#2a  
SortUtil.swap(data,i,lowIndex); |Qcz5M90e  
} ;X<Ez5v3  
} mbkt7. ,P  
#;ObugY,  
} @,.D]43  
<DR|r  
Shell排序: 8+|W%}  
9zqo!&  
package org.rut.util.algorithm.support; g@!U^mr*3  
cdL]s^z  
import org.rut.util.algorithm.SortUtil; Z[*unIk  
b-VtQ%Q  
/** ugTsI~aE  
* @author treeroot Vu.=,G  
* @since 2006-2-2 RR[zvH} E  
* @version 1.0 W/BPf{U  
*/ kR97 )}Y  
public class ShellSort implements SortUtil.Sort{ R`<2DC>h9  
8k-]u3  
/* (non-Javadoc) pt.V^a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xD&n'M]  
*/ `OMX 9i  
public void sort(int[] data) { p*0[:/4  
for(int i=data.length/2;i>2;i/=2){ hJxL|5Uo  
for(int j=0;j insertSort(data,j,i); K\9CW%W  
} 3,q?WH%_  
} f#:3 TJV  
insertSort(data,0,1); *V',@NH#Os  
} -)(=~|,Pq/  
ow9a^|@a  
/** f:+/= MW  
* @param data _-({MX[3k<  
* @param j _x(hlHFk  
* @param i 4@fv%LOQo  
*/ 'k\j[fk/K  
private void insertSort(int[] data, int start, int inc) { '(B -{}l  
int temp; )/ 'WboL  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); o+{,>t  
} &J2 UAmB  
} qzNb\y9G  
} `.pEI q^  
 4 Pc-A  
} GalSqtbmDt  
@Nsn0-B?ne  
快速排序: ~{lb`M^]h  
>&;J/ME  
package org.rut.util.algorithm.support; 36OQHv;&  
id9QfJ9t  
import org.rut.util.algorithm.SortUtil; 7<]&pSt=  
95#]6*#[4!  
/** cJ$jU{}  
* @author treeroot 'e]>lRZ  
* @since 2006-2-2 Pqvj0zUo$  
* @version 1.0 'r^'wv]  
*/ |CS&H2!s  
public class QuickSort implements SortUtil.Sort{ FNl^ lj`Y  
Y8mv[+Z  
/* (non-Javadoc) f|!@H><  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4g.S!-H@R  
*/ 1mEW]z  
public void sort(int[] data) { 4uVyf^f\]f  
quickSort(data,0,data.length-1); T(qHi?Y  
} I= z+`o8  
private void quickSort(int[] data,int i,int j){ .L]2g$W\p  
int pivotIndex=(i+j)/2; wz:w6q  
file://swap KA`)dMWL  
SortUtil.swap(data,pivotIndex,j); @zix %x  
`Uk jr MO  
int k=partition(data,i-1,j,data[j]); 6~k qU4lL  
SortUtil.swap(data,k,j); +A_jm!tJS(  
if((k-i)>1) quickSort(data,i,k-1); Hc q@7g  
if((j-k)>1) quickSort(data,k+1,j); } 4>#s$.2  
twTRw:.!f  
} ht5:kt`F  
/** MD+ eLA7  
* @param data lzZ=!dG  
* @param i rmnnV[@o  
* @param j A`b )7+mB  
* @return 7.v{=UP  
*/ -| t|w:&  
private int partition(int[] data, int l, int r,int pivot) { DZ;2aH  
do{ <gr2k8m6$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); E!>l@ ki  
SortUtil.swap(data,l,r); 5z:/d`P[  
} `JG7Pl/ih  
while(l SortUtil.swap(data,l,r); .rbKvd?-}  
return l; gq?~*4H  
} 3nkO+ qQ  
ok9G9|HA  
} ^TY8,qDA  
P~*v}A  
改进后的快速排序: j: B,K.:  
`?Xt ,  
package org.rut.util.algorithm.support; X 7"hTD  
 PYYO-Twg  
import org.rut.util.algorithm.SortUtil; K,GX5c5  
QWxl$%`89<  
/** ]r1 C  
* @author treeroot 7wc{.~+  
* @since 2006-2-2 ?{6[6T  
* @version 1.0 38q0iAH  
*/ su]ywVoRT  
public class ImprovedQuickSort implements SortUtil.Sort { `<l|XPv  
/-)|dP  
private static int MAX_STACK_SIZE=4096; Aonq;} V e  
private static int THRESHOLD=10; } u7&SU  
/* (non-Javadoc)  =!Y{Mz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7dU7cc  
*/ DK;/eZe  
public void sort(int[] data) { MtO p][i  
int[] stack=new int[MAX_STACK_SIZE]; cB[.ET$  
*Cgd?*\7  
int top=-1; $$G^#t1=XZ  
int pivot; eDSBs3k7H  
int pivotIndex,l,r; S\UM0G}v  
6.'+y1yS)  
stack[++top]=0; )p;gm`42oY  
stack[++top]=data.length-1; p{Gg,.f!HM  
&_E*]Sj\  
while(top>0){ Pjff%r^  
int j=stack[top--]; uy;3s=03^  
int i=stack[top--]; Fw5r\J87c  
ZvO:!u0+"  
pivotIndex=(i+j)/2; G1'w50Yu  
pivot=data[pivotIndex]; yMa5?]J  
<!|2Ru  
SortUtil.swap(data,pivotIndex,j); l9.wMs*`X  
Q$9`QY*6"p  
file://partition :r/rByd'  
l=i-1; jr:LLn#}  
r=j; }J$PO*Q@'  
do{ /qL&)24  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); F<w/@ .&m  
SortUtil.swap(data,l,r); Q\:'gx8`  
} 3-8Vw$u  
while(l SortUtil.swap(data,l,r); qwaw\vOA  
SortUtil.swap(data,l,j); y K&)H+v  
j{P,(-  
if((l-i)>THRESHOLD){ rd 1&?X  
stack[++top]=i; I$wP`gQh  
stack[++top]=l-1; Gf'V68,l$  
} ~ab"q %  
if((j-l)>THRESHOLD){ tY :-13F  
stack[++top]=l+1; <ZrZSt+<  
stack[++top]=j; ^?xXP=/  
} %9NGVC  
\aUbBa%!  
} I"JT3[*s  
file://new InsertSort().sort(data); d*>M<6b-  
insertSort(data); }}(~'  
} |$b4 {  
/** #G{T(0<F  
* @param data V`WfJ>{;Z  
*/ cdIy[ 1  
private void insertSort(int[] data) { b8v$*{  
int temp; TPEZ"%=Hg  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9 [I ro  
} |k+&we uY  
} "| Q&  
} dF.T6b  
W'0wTZG  
} 6 3u'-Z"4  
&1':s|c  
归并排序: iGU N$  
#uXOyiE  
package org.rut.util.algorithm.support; z!L0j +  
#i ]@"R  
import org.rut.util.algorithm.SortUtil; =0]Mc$Ih  
-=sxbs.aA  
/** Nm081ic2<  
* @author treeroot <zDe;&  
* @since 2006-2-2 1)PR]s:-m@  
* @version 1.0 bA^a@ lv a  
*/ i ('EBO  
public class MergeSort implements SortUtil.Sort{ p4AXQuOP  
n[WeN NU  
/* (non-Javadoc) &S-& 'ZAY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2b"5/$|6  
*/ JX/d;N7a  
public void sort(int[] data) { Q:Ms D.  
int[] temp=new int[data.length]; &sNID4FR  
mergeSort(data,temp,0,data.length-1); =Fs LF  
} 'q^Gg;c>+  
Y'HF^jv]R  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7cy~qg  
int mid=(l+r)/2; AP7W)S  
if(l==r) return ; G7202(w <  
mergeSort(data,temp,l,mid); Iw:("A&~  
mergeSort(data,temp,mid+1,r); ,TtDCcjd%f  
for(int i=l;i<=r;i++){ ^U?(g0<"  
temp=data; W.R'2R#  
} .0-m=3mp2  
int i1=l; o'4@]ae   
int i2=mid+1; S- \lN|  
for(int cur=l;cur<=r;cur++){ '9dtIW6E  
if(i1==mid+1) / IS WC   
data[cur]=temp[i2++]; //,'oh~W  
else if(i2>r) Cr%r<*s  
data[cur]=temp[i1++]; KEN-G  
else if(temp[i1] data[cur]=temp[i1++]; n6Zx0ad?  
else |*NrS<"  
data[cur]=temp[i2++]; @(?4g-*E  
} 2ML6Lkk  
} * **a2Z/(  
F]EBD8/b  
} ;W]\rft[  
x|i_P|Z  
改进后的归并排序: 4;<ut$G  
aUc|V{Jp  
package org.rut.util.algorithm.support; g^7MMlY%  
DF_X  
import org.rut.util.algorithm.SortUtil; 6*45Vf  
>yB(lKV  
/** H,QTYXi "  
* @author treeroot UAn&\8g_  
* @since 2006-2-2 kLj$@E`4  
* @version 1.0 @WMA}\Cc  
*/ .uF[C{RnO  
public class ImprovedMergeSort implements SortUtil.Sort { 5T@aCC@$h  
8|6 4R:  
private static final int THRESHOLD = 10; H[ m <RaG8  
l{Dct\ #s  
/* ^uBxgWIC  
* (non-Javadoc) i,I B!x  
* - VxDNT}Tr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3]RyTQ  
*/ q1?&Ev^  
public void sort(int[] data) { 0@I S  
int[] temp=new int[data.length]; zCv"]%  
mergeSort(data,temp,0,data.length-1); _8,()t'"  
} <-'$~G j  
]\ !5}L  
private void mergeSort(int[] data, int[] temp, int l, int r) { `h:34RC;  
int i, j, k; J(DN !  
int mid = (l + r) / 2; $5x ,6[&  
if (l == r) #J (~_%Wi  
return; d.UQW yLG  
if ((mid - l) >= THRESHOLD) 7x);x/#8Z  
mergeSort(data, temp, l, mid); GZI`jS"lU  
else F8-?dpf'  
insertSort(data, l, mid - l + 1); ljTBvU  
if ((r - mid) > THRESHOLD) ?;[w" `"  
mergeSort(data, temp, mid + 1, r); ktIi$v  
else %\]* OZ7  
insertSort(data, mid + 1, r - mid); h8Yx#4  
(e(:P~Ry  
for (i = l; i <= mid; i++) { svxw^ 0~a  
temp = data; .7K7h^*F  
} .X# `k  
for (j = 1; j <= r - mid; j++) { fhL,aCS=  
temp[r - j + 1] = data[j + mid]; i&{DOI%w  
} -py@DzK  
int a = temp[l]; ]a5 f2lE  
int b = temp[r]; jv&*uYm  
for (i = l, j = r, k = l; k <= r; k++) { 0lhVqy}:}o  
if (a < b) { "g$IP9?U  
data[k] = temp[i++]; :Nofp&  
a = temp; ``wSc0\  
} else { bv&;R  
data[k] = temp[j--]; +v=C@2T  
b = temp[j]; dqN5]Sb2B  
} yUpgoX(6  
} Q~Hy%M%R3  
} )wT-8o  
<J^MCqp!v  
/** Hy^N!rBxfO  
* @param data B)0i:"q  
* @param l %}%Qc6.H  
* @param i 'FDef#P<  
*/ +0OLc2 )w  
private void insertSort(int[] data, int start, int len) { _H5o'>=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); S:O O0<W  
} cXKjrL[b  
} u:=7l  
} Ymg|4 %O@  
} p>4-s, W  
; #&yn=^  
堆排序: INJEsz  
O6LS(5j2  
package org.rut.util.algorithm.support; "thdPZ  
sVOyT*GY  
import org.rut.util.algorithm.SortUtil; S[J}UpV  
B!?%O  
/** $42{HFGq  
* @author treeroot g\&g N  
* @since 2006-2-2 ]GW]dM  
* @version 1.0 /w}u3|L$  
*/ =,6z4" )  
public class HeapSort implements SortUtil.Sort{ ^G}47(  
]SLP}Jwy  
/* (non-Javadoc) l4uMG]m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }khV'6"'|  
*/ ` 2V19 s]  
public void sort(int[] data) { 1=d6NX)B  
MaxHeap h=new MaxHeap(); pSdI/Vj'=  
h.init(data); <h:x=  
for(int i=0;i h.remove(); RwpdRBb  
System.arraycopy(h.queue,1,data,0,data.length); n<z [J=I  
} CDK 5  
qKr8)}h  
private static class MaxHeap{ d,B:kE0Y  
JR@`2YP-  
void init(int[] data){ 3sy (vC  
this.queue=new int[data.length+1]; Lh!J >  
for(int i=0;i queue[++size]=data; a%/9v"}  
fixUp(size); 42$VhdG  
} kuszb~`zPY  
} Ku5\]  
[\v}Ul  
private int size=0; r\'A i6  
^:^9l1]  
private int[] queue; 7QiIiWqIWC  
:V RNs  
public int get() { e> e}vZlX  
return queue[1]; &8Cu#^3  
} R;uvkg[o  
D#cyOrzy  
public void remove() { Y']\Jq{OS  
SortUtil.swap(queue,1,size--); ` Mjj@[  
fixDown(1); fg_4zUGM+g  
} %Nlt H/I  
file://fixdown [%y';`( x  
private void fixDown(int k) { O_oPh] x)  
int j; 4&<oFW\r  
while ((j = k << 1) <= size) { +Vb.lH[av  
if (j < size %26amp;%26amp; queue[j] j++; iVhJ t#_b  
if (queue[k]>queue[j]) file://不用交换 \A 2r]  
break; J=9FRC  
SortUtil.swap(queue,j,k); >JHryS.j$4  
k = j; FH?U(-  
} FtP0krO(  
} I8hz(2jI  
private void fixUp(int k) { )WNzWUfn=z  
while (k > 1) { 8]M;T>n[  
int j = k >> 1; -`*a'p-=  
if (queue[j]>queue[k]) !#], hok8X  
break; @Q)OGjaq  
SortUtil.swap(queue,j,k); + [iQLM?zo  
k = j; jFQQ`O V  
} %aG5F}S2~  
} GFj{K  
n`? py  
} x|/|jzJSX  
9&-dTayIz  
} q(  
B]nEkO'a:  
SortUtil: L*Tj^q!t+  
g!g#]9j  
package org.rut.util.algorithm; |^&b8  
],@rS9K  
import org.rut.util.algorithm.support.BubbleSort; xgwY@'GN  
import org.rut.util.algorithm.support.HeapSort; (yH'{6g\  
import org.rut.util.algorithm.support.ImprovedMergeSort; $SlIr<'*"  
import org.rut.util.algorithm.support.ImprovedQuickSort; K0u|U`   
import org.rut.util.algorithm.support.InsertSort; g;H=6JeG/  
import org.rut.util.algorithm.support.MergeSort; lUOF4U&r  
import org.rut.util.algorithm.support.QuickSort; F%@A6'c  
import org.rut.util.algorithm.support.SelectionSort; aB_F9;IR  
import org.rut.util.algorithm.support.ShellSort; @:oXN]+ _  
>~''&vdsk\  
/** , Rk9N  
* @author treeroot JA %J$d  
* @since 2006-2-2 |UkR'Ma  
* @version 1.0 J?*1*h  
*/ 3lf=b~Zi)  
public class SortUtil { R[zpD%CI  
public final static int INSERT = 1; C'>|J9~Gz  
public final static int BUBBLE = 2; 2i)^ !c  
public final static int SELECTION = 3; QVv#fy1"6  
public final static int SHELL = 4; MUaq7B_>  
public final static int QUICK = 5; bZ dNibN  
public final static int IMPROVED_QUICK = 6; GoJ.&aH $  
public final static int MERGE = 7; sfpZc7  
public final static int IMPROVED_MERGE = 8; mUNn%E:7@{  
public final static int HEAP = 9; +jAGGv^)  
:N:yLd} &  
public static void sort(int[] data) { tP:lP#9  
sort(data, IMPROVED_QUICK); YX!{P=Ua  
} PIJr{6B/PA  
private static String[] name={ d?y4GkK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $[Sc0dzJ  
}; jte.Xy~g  
1XrO~W\=  
private static Sort[] impl=new Sort[]{ h\$$JeSV]  
new InsertSort(), +! ]zA4x  
new BubbleSort(), ny]?I  
new SelectionSort(), } +TORR?  
new ShellSort(),  Fe#  1  
new QuickSort(), gt\E`HB8E  
new ImprovedQuickSort(), G'nmllB`]  
new MergeSort(), _:ReN_0  
new ImprovedMergeSort(), WQx?[tW(U  
new HeapSort() Q{O+  
}; $By< $  
KKb,d0T[  
public static String toString(int algorithm){ ^a/gBC82x  
return name[algorithm-1]; AgWa{.`f:  
} g1;:KzVv  
cb@?}(aFl  
public static void sort(int[] data, int algorithm) { 2+RUTOv/d  
impl[algorithm-1].sort(data); .H escg/S  
} m~w[~flgZ  
O;+ maY^l  
public static interface Sort { N,<uf@LQ  
public void sort(int[] data); UBv,=v  
} 3RigzT3  
Ka'=o?'B5  
public static void swap(int[] data, int i, int j) { C>]0YO k2  
int temp = data; *zaQx+L  
data = data[j]; $CRm3#+ ~  
data[j] = temp; bYcV$KJk  
} V"[g.%%Y  
} 7dN*lks  
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