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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。 CD~z=vlK-  
插入排序: =*r]) Vg^  
% a@>_  
package org.rut.util.algorithm.support; O vk_\On  
V4KMOYqm  
import org.rut.util.algorithm.SortUtil; 1$p2}Bf {n  
/** Q|D @Yd\  
* @author treeroot F*3j.lI  
* @since 2006-2-2 pQtJc*[!  
* @version 1.0 wfq7ob4^  
*/ /#m=*&!CB  
public class InsertSort implements SortUtil.Sort{ &L,nqc\3D5  
O8j_0  
/* (non-Javadoc) )'6DNa[y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t+1 %RyKFB  
*/ TjwBv6h  
public void sort(int[] data) { ^$'z!+QRM  
int temp; p IU&^yX>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .ZJRO>S  
} 7aQc=^vaZ  
} +h r@#n4A  
} no9;<]4  
8&)DE@W  
} w-t8C=Z  
xT+zU}z  
冒泡排序: ~;#Y9>7\\'  
6y9t(m  
package org.rut.util.algorithm.support; !g(KK|`,m  
QT>`^/]d  
import org.rut.util.algorithm.SortUtil; U8LtG/  
G"Sd@%W(  
/** VrxQc qPr`  
* @author treeroot 2 -C!jAfd  
* @since 2006-2-2 |~X ;1j!  
* @version 1.0 L;'"A#Pa  
*/ ]y1OFKYv  
public class BubbleSort implements SortUtil.Sort{ Vp3ZwS  
h3z{(-~y  
/* (non-Javadoc) ?6fnpGX@a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @AIaC-,~]  
*/ \\u<S=G  
public void sort(int[] data) { S&b*rA02zp  
int temp; \4-"L>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ OeS\7  
if(data[j] SortUtil.swap(data,j,j-1);  ng_^  
} y*tZ !m2Gg  
} 2M68CE  
} 7]||UuF<  
} 'Pn3%&O$  
-8j+s}Q  
} ,u`YT%&L  
,z-}t& _t  
选择排序: K%F,='P}  
Ai gS!-   
package org.rut.util.algorithm.support; S/ODq L|  
nysUZB  
import org.rut.util.algorithm.SortUtil; OVhE??#  
Y[$!`);Ye  
/** \8?Tdx=  
* @author treeroot a6WI170^1  
* @since 2006-2-2 /iJ4{p   
* @version 1.0 c%'RR?Tl  
*/ %|oJ>+  
public class SelectionSort implements SortUtil.Sort { k|lcc^[0  
}DK7'K  
/* :=/>Vbd: )  
* (non-Javadoc) T QSzx%i2  
* [ji#U s:h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b{]z w pf  
*/ Dm-zMCf}Q  
public void sort(int[] data) { I/L_@X<*r  
int temp; 7w/4QiI  
for (int i = 0; i < data.length; i++) { pnbIiyV  
int lowIndex = i; wT:b\km:!  
for (int j = data.length - 1; j > i; j--) { t-0a7 1#e  
if (data[j] < data[lowIndex]) { -< &D  
lowIndex = j; L&%s[  
} INi]R^-  
} I.94v #r  
SortUtil.swap(data,i,lowIndex); -U/c\-~fU  
} tjluk  
} A#95&kJpy  
)XzI #iQ  
} X  .5aMm  
fvF?{k>~}  
Shell排序: ( 8c9 /7h  
+L9Eqll  
package org.rut.util.algorithm.support; jg\Z;_!W  
ZfgJ.<<  
import org.rut.util.algorithm.SortUtil; N,;5{y1;J  
S7L=#+Z  
/** Ksy -e{n  
* @author treeroot j&Wl0  
* @since 2006-2-2 >w^YO25q  
* @version 1.0 ~?FpU  
*/ Ju :CMkv  
public class ShellSort implements SortUtil.Sort{ s! }ne"&0  
KNLfp1!  
/* (non-Javadoc) G6FEp`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dqe^E%mc  
*/ :"I E  
public void sort(int[] data) { \8 h;K>=h  
for(int i=data.length/2;i>2;i/=2){ eK!V );  
for(int j=0;j insertSort(data,j,i); IuRmEL_Q_  
} y10h#&k  
} ~ y;6W0x  
insertSort(data,0,1); 26k LhFS  
} 52,m:EhL  
0 SNIYkGE  
/** I{*<4a7q  
* @param data x"{'&J[hx  
* @param j 2h=!k|6  
* @param i MvWaB  
*/ x`dHJq`_g  
private void insertSort(int[] data, int start, int inc) { FTQ%JTgT  
int temp; km1~yQ"bH  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lAJxr8 .  
} (3 #Cl 1]f  
} 4W)B'+ZK8  
} ^n"OL*ipG  
)l[M Q4vWW  
} ;Mpy#yIU.  
 $W9{P;  
快速排序: $[/&74#0HX  
'Ub g0"F(  
package org.rut.util.algorithm.support; HsHB!mQV  
j.L-{6_s>~  
import org.rut.util.algorithm.SortUtil; Ffv`kn@  
!H irhD N  
/** -!N&OZ+R   
* @author treeroot P5#r,:zL  
* @since 2006-2-2 n>^Y$yy}!  
* @version 1.0 PV4(hj  
*/ 3+G@g#MY  
public class QuickSort implements SortUtil.Sort{ 8$ma;U d  
h0g:@ae%&  
/* (non-Javadoc) $d)ca9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l:<?{)N`  
*/ [-;_ZFS{  
public void sort(int[] data) { JNa"8  
quickSort(data,0,data.length-1); 72Iy^Y[MX  
} "Za >ZRR  
private void quickSort(int[] data,int i,int j){ k=B] &F  
int pivotIndex=(i+j)/2; (jFGa2{  
file://swap YH%'t= <m  
SortUtil.swap(data,pivotIndex,j); o;=l ^-  
pm\x~3jHs  
int k=partition(data,i-1,j,data[j]); -"h;uDz|z  
SortUtil.swap(data,k,j); !\"5rNy  
if((k-i)>1) quickSort(data,i,k-1); MV\|e1B}  
if((j-k)>1) quickSort(data,k+1,j); W'.s\e?gh  
>b6-OFJx  
} k?z98 >4  
/** a(9L,v#?  
* @param data A%D7bQ  
* @param i b r^_'1  
* @param j rZfN+S,g  
* @return  mi)LP?q  
*/ _/s(7y!  
private int partition(int[] data, int l, int r,int pivot) { Lv'D^'I  
do{ 6C]1Q.f;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u9}1)9  
SortUtil.swap(data,l,r);  y7$iOR  
} 6C-/`>m  
while(l SortUtil.swap(data,l,r); m"fNK$_d  
return l; E !a|Xp  
} \yd s5g!:  
yfx7{naKC`  
} e|p$d:#!  
qZh1`\G  
改进后的快速排序: rfgI$eu   
Qum9A   
package org.rut.util.algorithm.support; :L1dyVA{  
u)V#S:9]  
import org.rut.util.algorithm.SortUtil; &%s8L\?  
'{J&M|<A  
/** <YOLxR  
* @author treeroot %c [F;ug  
* @since 2006-2-2 Pj4/xX  
* @version 1.0 *+\S yO  
*/ SnFk>`  
public class ImprovedQuickSort implements SortUtil.Sort { Yb /i{@AJ  
tX@_fYb  
private static int MAX_STACK_SIZE=4096; wmTq` XH)  
private static int THRESHOLD=10; 05spovO/'  
/* (non-Javadoc) Z7_ zMM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $zyIuJN#  
*/ RheRe  
public void sort(int[] data) { @~#Ym1{W  
int[] stack=new int[MAX_STACK_SIZE]; ooV3gj4  
rN%F) q#  
int top=-1; 7hi"6,  
int pivot; aS pWsT  
int pivotIndex,l,r; #F*1V(!  
,daKC  
stack[++top]=0; ^~$)F_`"  
stack[++top]=data.length-1; RgGyoZ  
_x? uU  
while(top>0){ ObE,$_ k  
int j=stack[top--]; x,otFp  
int i=stack[top--]; ~,BIf+ \XF  
:sP!p`dl  
pivotIndex=(i+j)/2; 3Ezy %7  
pivot=data[pivotIndex]; jWY$5Vq<H  
?APe R,"V  
SortUtil.swap(data,pivotIndex,j); 13+<Q \  
{fEwA8Ir  
file://partition lr{?"tl_  
l=i-1; ' /$d0`3B>  
r=j; ,N e;kI  
do{ OI?K/rn  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ph_4q@  
SortUtil.swap(data,l,r); 7yz4'L  
} Vm df8[5  
while(l SortUtil.swap(data,l,r); svuq gSn  
SortUtil.swap(data,l,j); "d$m@c  
DF g,Xa#  
if((l-i)>THRESHOLD){ h^*4}GU  
stack[++top]=i; 2l F>1vH  
stack[++top]=l-1; 2Y>~k{AN%  
} $YXMI",tt<  
if((j-l)>THRESHOLD){ 7 As|Ns`  
stack[++top]=l+1; v9D22,K-  
stack[++top]=j; x&`~R>5/  
} h[?O+Z^  
*$"gaXI  
} ynB_"mg  
file://new InsertSort().sort(data); z)xSN;x  
insertSort(data); =e}H'5?!  
} "n: %E  
/** RKa}$ 7  
* @param data ZWm8*}3]7_  
*/ !TP@- X;  
private void insertSort(int[] data) { J8"[6vId~  
int temp; LS5vW|]w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Qq@G\eRo  
} ?0 m\(#  
} v NeCpf  
} .!6>oL/iF  
tU^kQR!  
} +4,2<\fX  
5hbJOo0BZ  
归并排序: h8Xg`C\  
) gzR=9l  
package org.rut.util.algorithm.support; nD0}wiL{  
 X!j{o  
import org.rut.util.algorithm.SortUtil; g >'p>}t  
v|ck>_" .  
/** oP2fX_v1x  
* @author treeroot !{82D[5  
* @since 2006-2-2 +dP L>R  
* @version 1.0 >^OC{~Az  
*/ R@*O!bD  
public class MergeSort implements SortUtil.Sort{ d7&eLLx  
+,&O1ykY  
/* (non-Javadoc) )$&dg2[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) if)Y9:{r^  
*/ SR8qt z/V  
public void sort(int[] data) { #k$)i[aI-  
int[] temp=new int[data.length]; X/; p-KX  
mergeSort(data,temp,0,data.length-1); 6AP~]e 8  
} N,J9Wu ZJ\  
* FeQ*`r  
private void mergeSort(int[] data,int[] temp,int l,int r){ -@F fU2  
int mid=(l+r)/2; Lqp8yVO  
if(l==r) return ; S#b-awk  
mergeSort(data,temp,l,mid); QnI.zq V  
mergeSort(data,temp,mid+1,r); >?]_<:  
for(int i=l;i<=r;i++){ y?)}8T^  
temp=data; Jj= ;  
} WA$>pG5s  
int i1=l; `Rd m-[&  
int i2=mid+1; CAU0)=M  
for(int cur=l;cur<=r;cur++){ 0vGyI>  
if(i1==mid+1) ;oxAe<VIj  
data[cur]=temp[i2++]; ^Q{Bq  
else if(i2>r) H3H_u4_?SE  
data[cur]=temp[i1++]; /R LI,.%  
else if(temp[i1] data[cur]=temp[i1++]; NJ MJ  
else e8EfQ1 Ar  
data[cur]=temp[i2++]; gUAxyV  
} v`c$!L5  
} v6GsoQmA   
jhGlG-^  
} S\wW)Pv8  
;c -3g]  
改进后的归并排序: 1 Vy,&[c~"  
&5%dhc4&!&  
package org.rut.util.algorithm.support; y#<MV H  
H2r8,|XL  
import org.rut.util.algorithm.SortUtil; @-)tM.8~  
T'#!~GpB  
/** T%F0B`  
* @author treeroot $ C0TD7=  
* @since 2006-2-2 5y} v{Ijt  
* @version 1.0 !$g+F(:(c  
*/ 0fs$#j  
public class ImprovedMergeSort implements SortUtil.Sort { >qo~d?+  
7 yt=]1  
private static final int THRESHOLD = 10; m7%C#+67  
` r']^ ,  
/* #g5^SR|qE  
* (non-Javadoc) aVe/ gE  
* GOSI3RRn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _0pO8o-x  
*/ q+a.G2S  
public void sort(int[] data) { Qpt&3_   
int[] temp=new int[data.length]; zTD@  
mergeSort(data,temp,0,data.length-1); <8 #ObdY!  
} r,N[)@  
l+y}4 k=/  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~/IexQB&  
int i, j, k; L fl-!1  
int mid = (l + r) / 2; ?`zgq>R}w[  
if (l == r) 1j\aH&)GH  
return; _ jAo:K_Z  
if ((mid - l) >= THRESHOLD) =C f(B<u  
mergeSort(data, temp, l, mid); Dz_eB"}  
else DP7C?}(  
insertSort(data, l, mid - l + 1); 3P <'F2o  
if ((r - mid) > THRESHOLD) |c2v%'J2G  
mergeSort(data, temp, mid + 1, r); 8@M'[jT  
else N8!TZ~1$  
insertSort(data, mid + 1, r - mid); S^f:`9ab9  
df=z F.5  
for (i = l; i <= mid; i++) { @("}]/O V:  
temp = data; !]S=z^"<  
} -qebQv  
for (j = 1; j <= r - mid; j++) { l SkEuN  
temp[r - j + 1] = data[j + mid]; 3^.8.q(6  
} \NXQ  
int a = temp[l]; *C,N'M<u  
int b = temp[r]; Z0fJ9 HW  
for (i = l, j = r, k = l; k <= r; k++) { L|^o7 1t|  
if (a < b) { DI&MC9j(   
data[k] = temp[i++]; YCw('i(|  
a = temp; sg'NBAo"  
} else { 6U,fz#<,}  
data[k] = temp[j--]; .h;Se  
b = temp[j]; >&H~nGP.  
} t#<KxwhcN  
} hN(L@0)  
} Z,WW]Y,$  
{@r*+~C3  
/** :w?7j_p#  
* @param data WwW^[k (X  
* @param l ~4)Y#IxL  
* @param i X^< >6|)  
*/ GJ}.\EaAJ  
private void insertSort(int[] data, int start, int len) { w}M3x^9@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .yVnw^gu  
} $`vkw(;t)1  
} b4 hIeBI\  
} 9.0WKcwg  
} =p&sl;PsLw  
4w{-'M.B  
堆排序: Yb=6C3l@  
wk 02[  
package org.rut.util.algorithm.support; E '%lxr  
* Zd_ HJi  
import org.rut.util.algorithm.SortUtil; _2jw,WKr  
KtTza5aF  
/** HR3_@^<7  
* @author treeroot v3JPE])/  
* @since 2006-2-2 jNy?[ )  
* @version 1.0 d.pp3D 9/  
*/ Q @2(aR  
public class HeapSort implements SortUtil.Sort{ :HW>9nD.  
WF/l7u#4i  
/* (non-Javadoc) kUHie   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C(,=[Fi-  
*/ jX|=n.#q  
public void sort(int[] data) { Q#WE|,a  
MaxHeap h=new MaxHeap(); KtMbze  
h.init(data); 6.Bh3p  
for(int i=0;i h.remove(); @8"18HEp#  
System.arraycopy(h.queue,1,data,0,data.length); a{`"68  
} s#lto0b"8  
F14(;'Az  
private static class MaxHeap{ )!C7bTv 4  
<*Y O~S(R  
void init(int[] data){ O|UxFnB}  
this.queue=new int[data.length+1]; 8U^D(jrz  
for(int i=0;i queue[++size]=data; IT1P Pm  
fixUp(size); nC~fvyd<P  
} :l~EE!  
} ~|R[O^9B  
uu>lDvR*  
private int size=0; (/fT]6(  
)C}KR`"  
private int[] queue; lcig7%  
e}Q>\t45  
public int get() { vOgLEN&]  
return queue[1]; j@ C0af  
} dYyW]nZ&  
~Oh=   
public void remove() { g+9v$[!  
SortUtil.swap(queue,1,size--); !BRcq~-.  
fixDown(1); @*_ZoO7{  
} $WNG07]tU  
file://fixdown m;h<"]<  
private void fixDown(int k) { 6{7 3p@  
int j; ycjJbL(.  
while ((j = k << 1) <= size) { B+Q+0tw*i  
if (j < size %26amp;%26amp; queue[j] j++; =xBT>h;  
if (queue[k]>queue[j]) file://不用交换 J"bD\%  
break; ja75c~RUw  
SortUtil.swap(queue,j,k); 8&T,LNZoY  
k = j; kr{)  
} M;qb7Mu  
} x(vai1CrdH  
private void fixUp(int k) { tE:X,Lt[  
while (k > 1) { vpafru4  
int j = k >> 1; WFj*nS^~l  
if (queue[j]>queue[k]) DoG%T(M!a9  
break; .M+v?A d  
SortUtil.swap(queue,j,k); &Y=.D:z<  
k = j; 3`rIV*&_{  
} eKJ:?Lxv;  
} M,JA;a, _  
&gWiu9WbS  
} <N5rv3 s  
hBoP=X.~  
} 1$OVe4H1  
jI Z+d;1  
SortUtil: bx7\QU+  
K>LpN')d  
package org.rut.util.algorithm; gr\@sx?b  
<p)Z/  
import org.rut.util.algorithm.support.BubbleSort; |1i]L@&  
import org.rut.util.algorithm.support.HeapSort; |>@ -grs  
import org.rut.util.algorithm.support.ImprovedMergeSort; mo*'"/  
import org.rut.util.algorithm.support.ImprovedQuickSort; `+^sW#ki  
import org.rut.util.algorithm.support.InsertSort; 4 iKR{P6  
import org.rut.util.algorithm.support.MergeSort; Me<du& T  
import org.rut.util.algorithm.support.QuickSort; 1XGG.+D  
import org.rut.util.algorithm.support.SelectionSort; enPLaiJ'|q  
import org.rut.util.algorithm.support.ShellSort; 94+/wzWvi  
W'V@  
/** >"bnpYSe  
* @author treeroot -+' #*V  
* @since 2006-2-2 `1$y(w]  
* @version 1.0 k%^<}s@  
*/ ~ z>BfL  
public class SortUtil { Wk,6) jS=}  
public final static int INSERT = 1; i[8NO$tN1)  
public final static int BUBBLE = 2; b^%?S8]h  
public final static int SELECTION = 3; &8waih(|  
public final static int SHELL = 4; $mD>r x  
public final static int QUICK = 5; ret0z|  
public final static int IMPROVED_QUICK = 6; bz$Qk;m=H  
public final static int MERGE = 7; L=,Y1nO:p  
public final static int IMPROVED_MERGE = 8; ;n` $+g:>  
public final static int HEAP = 9; D-~G|8g  
-$OD}5ku#  
public static void sort(int[] data) { N-D(y  
sort(data, IMPROVED_QUICK); #TIX_RXh  
} n+X1AOE[L  
private static String[] name={  :4{Qh  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v8>!Gft  
}; o|0 '0P  
Vk WO}  
private static Sort[] impl=new Sort[]{ ]u;GNz}?  
new InsertSort(), e/ WBgiLw  
new BubbleSort(), U|9U(il  
new SelectionSort(), [4ee <J  
new ShellSort(), T ^N L:78  
new QuickSort(), t18UDR{  
new ImprovedQuickSort(), ^t`f1rGR  
new MergeSort(), )&XnM69~b  
new ImprovedMergeSort(), q%DVDq( z  
new HeapSort() Q5hb0O%a  
}; 0n\^$WY  
w[e0wh`.  
public static String toString(int algorithm){ >/8ru*Oc  
return name[algorithm-1]; ;v%Q8  
} g>UBZA4  
tK*%8I\s  
public static void sort(int[] data, int algorithm) { C?{D"f`[]  
impl[algorithm-1].sort(data); {ip=iiW2  
} #>@<n3rq  
<Kh?Ad>N  
public static interface Sort { ?_8%h`z  
public void sort(int[] data); T.J`S(oI  
} pn|p(6  
y#&$ f  
public static void swap(int[] data, int i, int j) { [ k!-;mi   
int temp = data; ~."!l'a  
data = data[j]; lfXH7jL2~  
data[j] = temp; yLjV[ qP  
} +g)_4fV0|  
} KlY,NSlQ  
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3+5=?,请输入中文答案:八 正确答案:八