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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。 ~z&Ho  
插入排序: VcpN PU6  
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package org.rut.util.algorithm.support; A"pV 7 y  
LPK[^  
import org.rut.util.algorithm.SortUtil; T.B} k`$  
/** *R8qnvE\()  
* @author treeroot M7. fz"M  
* @since 2006-2-2 1Uf8ef1,  
* @version 1.0 m>8tA+K)+)  
*/ 1WJ%n;  
public class InsertSort implements SortUtil.Sort{ ,mm9X\ '  
a0*qK)gH  
/* (non-Javadoc) )sBbmct_S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6e q`/~#  
*/ Y V#|qb  
public void sort(int[] data) { =Xu(Js-  
int temp; eczS(KoL4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h$#zuqm  
} g'nN#O  
} wfY]J0l  
} ,`.`}'  
NI)q<@ju  
} ^/_1y[j  
n}!D)Gx  
冒泡排序: 03^?+[C  
e}bY 9  
package org.rut.util.algorithm.support; r>.^4Z@  
Y&y5^nG  
import org.rut.util.algorithm.SortUtil; n^:Wc[[m  
ganXO5T$  
/** u8sK~1CPf  
* @author treeroot 3oE3bBj  
* @since 2006-2-2 "u.4@^+i  
* @version 1.0 n&;-rj^qq  
*/ 8^)K|+_'m  
public class BubbleSort implements SortUtil.Sort{ O}cg1Q8p  
y jQpdO  
/* (non-Javadoc) :^ *9E b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M-+pYv#&P  
*/ ~vv\A5O[|  
public void sort(int[] data) { QJKVNOo  
int temp; mvrg!/0w  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Yh 9fIRR  
if(data[j] SortUtil.swap(data,j,j-1); D`fi\A  
} WlfS|/\%V^  
} ~G#^kNme  
} 6z>Zm1h  
} (25v7 Y ]  
69K*]s  
} aVbv.>  
9_5tA'Q  
选择排序: nd?R|._R  
(%^Bp\.02!  
package org.rut.util.algorithm.support; Lf} @v  
-4!i(^w[m/  
import org.rut.util.algorithm.SortUtil; q[T='!Z\  
`Q~`Eq?@  
/** Bvy(vc=UDW  
* @author treeroot q"%;),@  
* @since 2006-2-2 "i3Q)$"S  
* @version 1.0 FdVWj 5 $a  
*/ +5C*i@v  
public class SelectionSort implements SortUtil.Sort { r -SQk>Y}  
'@Q aeFm  
/* oP( Hkp,'  
* (non-Javadoc) ee5QZ,  
* 8`j;v>2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DGllJ_/Z  
*/ w+Cs=!  
public void sort(int[] data) { |e#ea~/b  
int temp; +ysP#uAA  
for (int i = 0; i < data.length; i++) { \JX.)&> -  
int lowIndex = i; I_/kJ#7vj  
for (int j = data.length - 1; j > i; j--) { 3[E)/~-  
if (data[j] < data[lowIndex]) { //\UthOT  
lowIndex = j; &:ib>EB03=  
} 3kl\W[`?  
} \hcb~>=C  
SortUtil.swap(data,i,lowIndex); ;}=[( eqA  
} Nq3q##Ut:  
} Ikbz3]F^V  
=W Q_5}  
} 0o+2]`q)Q  
USrg,A  
Shell排序: QA3q9,C"  
Z*Qra4GBl]  
package org.rut.util.algorithm.support; V/jEMJNks  
Q<F-l. q   
import org.rut.util.algorithm.SortUtil; _a3,Zuv  
;2=H7dq  
/** zXHCP.Rmg  
* @author treeroot (!0=~x|Z[  
* @since 2006-2-2 5$ra4+k0  
* @version 1.0 SmJ6Fm6  
*/ D; 0iNcit  
public class ShellSort implements SortUtil.Sort{ <Hq|<^_K  
X(;,-7Jw  
/* (non-Javadoc) T;u>]"S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !pNY`sw}  
*/ 8yDu(.Q  
public void sort(int[] data) { 1Lf:TQB  
for(int i=data.length/2;i>2;i/=2){ [|\JIr=of5  
for(int j=0;j insertSort(data,j,i); e2v[ma-  
} J}-,!3qxW  
} !a[1rQH  
insertSort(data,0,1); Yy"05V.  
} ^|(w)Sy  
liUrw7,  
/** [foZO&+!  
* @param data u}7#3JfLn  
* @param j ttwfWfX  
* @param i IaU  
*/ uW8LG\Z>D5  
private void insertSort(int[] data, int start, int inc) { W]UGo,  
int temp; 6J|Y+Y$  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4D`T_l  
} fdD?"z  
} U0+Hk+  
} C>qKKLZ  
Ba\l`$%X  
} _:,:U[@Vz  
l(T CF  
快速排序: )bqfj>%#c  
/Wh} ;YTv^  
package org.rut.util.algorithm.support; }D7q)_g=  
L{)e1p]q  
import org.rut.util.algorithm.SortUtil; !6pOY*> j  
'y [eH  
/** }wh)I]]U  
* @author treeroot 62&(+'$n  
* @since 2006-2-2 Ew=8"V`C  
* @version 1.0 8/;q~:v  
*/ OgiElA.  
public class QuickSort implements SortUtil.Sort{ \S)\~>.`y!  
NY'sZTM&  
/* (non-Javadoc) (o1*7_]e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >C`b 4xQ  
*/ 1A4!zqT;  
public void sort(int[] data) { XF{ g~M  
quickSort(data,0,data.length-1); Xz'pZ*Hr$v  
} ?Mg&e/^  
private void quickSort(int[] data,int i,int j){ () Z!u%j  
int pivotIndex=(i+j)/2; `5:Wv b>|  
file://swap /3! KfG  
SortUtil.swap(data,pivotIndex,j); $T\z  
c]>s(/}T  
int k=partition(data,i-1,j,data[j]); :t6 w+h  
SortUtil.swap(data,k,j); 5'/Ney9N  
if((k-i)>1) quickSort(data,i,k-1); SsDe\"?Q  
if((j-k)>1) quickSort(data,k+1,j); ThX%Uzd"[;  
?v>!wuiP  
} x.CNDG  
/** /HsJyp+t  
* @param data *7C t#GC  
* @param i +s:!\(BM  
* @param j }@Ij}Ab>  
* @return `/:ZB6  
*/ #7IM#t c@  
private int partition(int[] data, int l, int r,int pivot) { G}d-L!YbE'  
do{ r=<Oy1m/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fQ5V RpWGn  
SortUtil.swap(data,l,r); C:/O]slH  
} U5]{`C0H?  
while(l SortUtil.swap(data,l,r); CBA MAr  
return l; ]A:n]mL  
} C`z[25o  
bsw0+UY=9  
} !>g_9'n'  
oZxC.;xJ  
改进后的快速排序: kzqW&`xn?  
;Ft_ Xiq  
package org.rut.util.algorithm.support; LMf_wsp  
}1P>^I"[Y  
import org.rut.util.algorithm.SortUtil; |*W`}i  
JzJS?ZF  
/** `H6-g=C  
* @author treeroot 5-M E Oy(  
* @since 2006-2-2 b-8{bP]n  
* @version 1.0 _ji"##K  
*/ n*6Oa/JG7  
public class ImprovedQuickSort implements SortUtil.Sort { cv(9v =](  
C9[Jr)QX  
private static int MAX_STACK_SIZE=4096; ,y}?Z 8?63  
private static int THRESHOLD=10; 7q<2k_3<  
/* (non-Javadoc) tCAh?nR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k{<]J5{7  
*/ <(dHh9$~  
public void sort(int[] data) { &v7$*n27  
int[] stack=new int[MAX_STACK_SIZE]; cXiNO ke&  
_5(lp} s  
int top=-1; sK8=PZ \  
int pivot; n=#AH;42  
int pivotIndex,l,r; V&U1WV/  
Vp*#,(_G:  
stack[++top]=0; i>YD_#w  
stack[++top]=data.length-1; fr$E'+l)  
}{Ab:+aNd  
while(top>0){ #Hl0>"k ,  
int j=stack[top--]; =&RpW7]  
int i=stack[top--]; ;*^2,_  
+G';no\h  
pivotIndex=(i+j)/2; `iYiAc  
pivot=data[pivotIndex]; 0b%"=J2/p.  
{3F;:%$`c  
SortUtil.swap(data,pivotIndex,j); 45` i  
~0"(C#l 9  
file://partition jj2 [Zh/h  
l=i-1; +;uP) "Q/L  
r=j; e^)+bmh  
do{ N t]YhO  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Umx~!YL!  
SortUtil.swap(data,l,r); % UDz4?zx  
} kH'LG!O  
while(l SortUtil.swap(data,l,r); I8;xuutc  
SortUtil.swap(data,l,j); QOA7#H-m9  
36mp+}R#  
if((l-i)>THRESHOLD){ We&~]-b AW  
stack[++top]=i; U~8;y'  
stack[++top]=l-1; 2Wwzcvs@  
} @v^;,cu'8  
if((j-l)>THRESHOLD){ -`nQa$N-  
stack[++top]=l+1;  xE.K  
stack[++top]=j; NUBf>~_}  
} -j1?l Y  
Vmq:As^a  
} l"70|~  
file://new InsertSort().sort(data); mw2/jA7  
insertSort(data); ]X y2km]  
} q1!45a  
/** {cmY`to  
* @param data <d89eV+  
*/ ~9%L)nC2'  
private void insertSort(int[] data) { _m.u@+g  
int temp; 28,Hd!{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); VfWU-lJ  
} /J''`Tf  
} LpCJfQ  
} a"7zz]XO2  
v_M-:e3`  
} xQLVFgd  
@r7ekyO8)  
归并排序: /Kcp9Qx  
e ]-fb{oVH  
package org.rut.util.algorithm.support; |q0F*\z3  
&QHZ]2%U  
import org.rut.util.algorithm.SortUtil; gR7in!8  
D%[yAr;r  
/** mX8k4$z  
* @author treeroot .[mI9dc  
* @since 2006-2-2 ?8AV-rRX  
* @version 1.0 v@m2c_,  
*/ Rq`B'G9|c  
public class MergeSort implements SortUtil.Sort{ P1cI]rriW  
in}d(%3h  
/* (non-Javadoc) z~8`xn,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JZ=ahSi  
*/ gY!+x=cx0  
public void sort(int[] data) { P){b"`f  
int[] temp=new int[data.length]; dsJMhB_41U  
mergeSort(data,temp,0,data.length-1); :g&9v_}&K{  
} s{g^K#BoFi  
R( 2,1f=d  
private void mergeSort(int[] data,int[] temp,int l,int r){ vwF#;jj\  
int mid=(l+r)/2; ,xcm:; &  
if(l==r) return ; KHnq%#  
mergeSort(data,temp,l,mid); tqo k.h  
mergeSort(data,temp,mid+1,r); f/"? (7F  
for(int i=l;i<=r;i++){ }Pi}? 41!  
temp=data; M N-j$-y}  
} Sq<ds}o'8l  
int i1=l; ;og[ q  
int i2=mid+1; olA 1,8  
for(int cur=l;cur<=r;cur++){ m2sf]-?Y  
if(i1==mid+1) ^@91BY  
data[cur]=temp[i2++]; o2'^MxKb T  
else if(i2>r) {"rYlN7,  
data[cur]=temp[i1++]; {&u`d.Lk2p  
else if(temp[i1] data[cur]=temp[i1++]; IOL5p*:gz  
else 79HKfG2+KB  
data[cur]=temp[i2++]; ZMp5d4y5  
} g>gVO@"b2  
} py-5 :g}d  
n1Ic[cM}  
} #_(t46  
@%"+;D  
改进后的归并排序: 3lh^maQ]  
M\m6|P  
package org.rut.util.algorithm.support; ,a6Oi=+>/U  
b=87k  
import org.rut.util.algorithm.SortUtil; 9nGS"E l{  
PiL[&_8g  
/** Hl|EySno  
* @author treeroot -F->l5  
* @since 2006-2-2 cc0e(\  
* @version 1.0 {tKi8O^Rb  
*/ %[l#S*)~  
public class ImprovedMergeSort implements SortUtil.Sort { :,8eM{.Q  
a ]b%v9  
private static final int THRESHOLD = 10; A#;TY:D2  
KkK !E  
/* Uo]x6j<  
* (non-Javadoc) pw, <0UhV  
* PI-o)U$Ehv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6}/m~m  
*/ S\jIs[Dz  
public void sort(int[] data) { 9coN >y  
int[] temp=new int[data.length]; }57d3s  
mergeSort(data,temp,0,data.length-1); +$CO  
} #Y_v0.N  
qA;!Pql`  
private void mergeSort(int[] data, int[] temp, int l, int r) { zZE@:P&lf  
int i, j, k; 8+|7*Ud  
int mid = (l + r) / 2; <&CzM"\Em  
if (l == r) c}u`L6!I3  
return; ^2f2g>9j_C  
if ((mid - l) >= THRESHOLD) )O:T\{7+  
mergeSort(data, temp, l, mid); #cCR\$-~  
else <jz\U7TBf  
insertSort(data, l, mid - l + 1); Yn>y1~  
if ((r - mid) > THRESHOLD) b0:5i<"w6  
mergeSort(data, temp, mid + 1, r); {Gi:W/jJ  
else E|9'{3$  
insertSort(data, mid + 1, r - mid); w8KVs\/  
nW"ml$  
for (i = l; i <= mid; i++) { sry`EkS  
temp = data; Om,M8!E  
} 5^0K5R6GQf  
for (j = 1; j <= r - mid; j++) { *.P3fVlZ  
temp[r - j + 1] = data[j + mid]; (X|`|Y  
} S(NUuu}S  
int a = temp[l]; VT:m!<^  
int b = temp[r]; b&g`AnYT  
for (i = l, j = r, k = l; k <= r; k++) { kN8?.V%Utw  
if (a < b) { 8]2j*e0xV  
data[k] = temp[i++]; ^`f( Pg!  
a = temp; wK*b2r}0/  
} else { 0(h'ZV  
data[k] = temp[j--]; ,\CG}-v@CN  
b = temp[j]; ( L ]C  
} )BX-Y@fpA  
} uzO3_.4Y  
} y&(R1Y75  
m2r %m y  
/** 41s[p56+@  
* @param data :G/.h[\R|  
* @param l Op 0Qpn  
* @param i HLYo+;j3|  
*/ Hphfqdh0`  
private void insertSort(int[] data, int start, int len) { Ks/Uyu. X  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *#&s+h,^  
} wf&1,t3Bgn  
} <1XJa2  
} nep-?7x  
} 2nv-/ %]  
#Py\'  
堆排序: Ynx.$$`$=  
iTpK:p X  
package org.rut.util.algorithm.support; 5Vu@gRk_  
a"pejW`m  
import org.rut.util.algorithm.SortUtil; 15U[F0b  
yq,% ey8  
/** )u}MyFl.  
* @author treeroot !vwx0  
* @since 2006-2-2 j87IxB?o  
* @version 1.0 1v"r8=Wt  
*/ \*x=q20  
public class HeapSort implements SortUtil.Sort{ =2tl149m/z  
P%^\<#Ya7  
/* (non-Javadoc) .=% ,DT"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (Gp|K6  
*/ 63Dm{ 2i}F  
public void sort(int[] data) { *=~X1s  
MaxHeap h=new MaxHeap(); lBcRt)_O7  
h.init(data); qcdENIy0b  
for(int i=0;i h.remove(); ]>'yt #]  
System.arraycopy(h.queue,1,data,0,data.length); 3!<} -sW4  
} B_uAa5'  
oHj64fE9  
private static class MaxHeap{ u4,b%h.  
@"$rR+r'  
void init(int[] data){ Ymr\8CG/  
this.queue=new int[data.length+1]; >x 6$F*:W}  
for(int i=0;i queue[++size]=data; VQ]MJjvb  
fixUp(size); $ix*xm. 4m  
} DUOSL  
} $KGpcl  
/c9%|<O%  
private int size=0; 8QaF(?  
J"W+9sI0  
private int[] queue; J`@#yHL  
q oJ4w7  
public int get() { Ze>Pg.k+  
return queue[1]; 'RjMwJy{  
} M~ ^ {S[o  
i<]Y0_?s  
public void remove() { #&jr9RB  
SortUtil.swap(queue,1,size--); 9'S~zG%{  
fixDown(1); Uk0]A  
} dtT2h>h9  
file://fixdown DHO+JtO  
private void fixDown(int k) { A_\ZY0Xt  
int j; sJ(q.FRM'  
while ((j = k << 1) <= size) { A[.5Bi  
if (j < size %26amp;%26amp; queue[j] j++; A1u|L^  
if (queue[k]>queue[j]) file://不用交换 <1EmQ)B   
break; !s:v UY58  
SortUtil.swap(queue,j,k); H%:u9DlEK/  
k = j; <(<19t5.  
} B%e#u.'6  
} %M_5C4&6  
private void fixUp(int k) { B,dHhwO*l  
while (k > 1) { uY5Gn.Y  
int j = k >> 1; S.kFs{;1x  
if (queue[j]>queue[k]) d PfD Pb  
break; _-.~>C  
SortUtil.swap(queue,j,k); !1M=9 ~$!  
k = j; 7L=V{,,v  
} ;"@FLq(n  
} bk#t+tuk  
}hjJt,m  
} :/ yR  
uVBMI.&w  
} l8_TeO  
^"Nsb&  
SortUtil: M+N7JpR  
b[I;6HW  
package org.rut.util.algorithm; 2r]!$ hto  
rLm:qu(F1  
import org.rut.util.algorithm.support.BubbleSort; dGb]`*E  
import org.rut.util.algorithm.support.HeapSort; }ST0?_0F*  
import org.rut.util.algorithm.support.ImprovedMergeSort; yv!,iK9  
import org.rut.util.algorithm.support.ImprovedQuickSort; =>7\s}QZ  
import org.rut.util.algorithm.support.InsertSort; "[LSDE"(  
import org.rut.util.algorithm.support.MergeSort; VC6S4FU4K  
import org.rut.util.algorithm.support.QuickSort; @$(/6]4p  
import org.rut.util.algorithm.support.SelectionSort; +yYv"J  
import org.rut.util.algorithm.support.ShellSort; 8'kA",P  
B?xu!B,  
/** .7nr:P  
* @author treeroot &$ ?i  
* @since 2006-2-2 "w\Iz]  
* @version 1.0 ]GS@ub  
*/ .2jG~_W[  
public class SortUtil { pSq3\#Twr  
public final static int INSERT = 1; #^bkM)pc  
public final static int BUBBLE = 2; $ZPiM  
public final static int SELECTION = 3; 5^\f[}  
public final static int SHELL = 4; U/JeEI%L  
public final static int QUICK = 5; @zJhJ'~ Sl  
public final static int IMPROVED_QUICK = 6; AjQ^ {P  
public final static int MERGE = 7; M zLx2?  
public final static int IMPROVED_MERGE = 8; 7 vS]O$w<4  
public final static int HEAP = 9; ?=]*r>a3  
+c699j;[  
public static void sort(int[] data) { | ZI~#V  
sort(data, IMPROVED_QUICK); `aS9 o]t  
} g]g2`ab |  
private static String[] name={ (zFUC]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" V+()`>44  
}; oj7X9~ nd  
_`JY A  
private static Sort[] impl=new Sort[]{ <h/\)bPB  
new InsertSort(), oK GFDl]3  
new BubbleSort(), p,=:Ff}~  
new SelectionSort(), U/B1/96lJ  
new ShellSort(), $rySz7NI  
new QuickSort(), ^;2dZgJ4^  
new ImprovedQuickSort(), <N%8"o  
new MergeSort(), \Mv8pU  
new ImprovedMergeSort(), ;n*N9-|.  
new HeapSort() O/IW.t  
}; qO<'_7TN[  
fNi&1J-/  
public static String toString(int algorithm){ 0 mWfR8h0  
return name[algorithm-1]; ] =jnt  
} dm Lgt)-t  
>8 V;:(nt  
public static void sort(int[] data, int algorithm) { .,K?(O4AY  
impl[algorithm-1].sort(data); ,~Y5vnaOQ  
} b&g9A{t  
$ ;/Ny)"  
public static interface Sort { G6zFCgFJ^y  
public void sort(int[] data); gz[Ng> D+  
} @NXGVmY1}  
$J #}3;a  
public static void swap(int[] data, int i, int j) { 'nNw  
int temp = data; : 5@cj j  
data = data[j]; %>uGzQ61  
data[j] = temp; j\nnx8`7  
} eBTy!!  
} ^c1I'9(r5  
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10+5=?,请输入中文答案:十五