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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。 :3*oAh8|  
插入排序: !9cPNIi  
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package org.rut.util.algorithm.support; ;3}b&Z[N]  
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import org.rut.util.algorithm.SortUtil; 8=Y|B5   
/** ]G&\L~P  
* @author treeroot )3\rp$]1  
* @since 2006-2-2 #YVDOR{z  
* @version 1.0 *7V{yK$O|  
*/ juYt =  
public class InsertSort implements SortUtil.Sort{ %LlKi5u]  
m/B9)JzY  
/* (non-Javadoc) ^a5~FI:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I%*Z j,>  
*/ pR7G/]U$A  
public void sort(int[] data) { ^O:RS g9  
int temp; "Ksd9,J\b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )4~XZt1r  
} 9>, \QrrH  
} [c%}L 3B  
} #{`NJ2DU]  
.shI% 'V  
}  cJ{P,K  
r~a}B.pj  
冒泡排序: ky"7 ^  
o"CqVRR  
package org.rut.util.algorithm.support; ArKrsI#H-  
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import org.rut.util.algorithm.SortUtil; = $Yk8,  
IN*Z__l8j`  
/** ~a)2 0  
* @author treeroot ViONG]F  
* @since 2006-2-2  7cQw?C  
* @version 1.0 aq**w?l  
*/ .SFwjriZ  
public class BubbleSort implements SortUtil.Sort{ w8zQDPVB%  
iKO~#9OF  
/* (non-Javadoc) sA j$U^Gp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8[XNFFUZs  
*/ "q8 'tN><  
public void sort(int[] data) { @}}1xP4Sr  
int temp; PkO(Y!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @g?z>n n  
if(data[j] SortUtil.swap(data,j,j-1); VJPPHJ[-  
} ?q7Gs)B=^'  
} zy5bDL -  
} 4K,&Q/Vdd7  
} ";%1sK  
7] H4E.(l  
} RAa1KOxZX  
3KZ h?~B  
选择排序: hTqJDP"&F  
riQ?'!a7  
package org.rut.util.algorithm.support; R``qQ;cc  
OTm"Iwzu@  
import org.rut.util.algorithm.SortUtil; B!lw>rUMQ  
6 >2! kM7  
/** JaTW/~ TU  
* @author treeroot d DTt_B  
* @since 2006-2-2 : DP{YL|x  
* @version 1.0 $NSYQF%aO  
*/ 3J{'|3x  
public class SelectionSort implements SortUtil.Sort { r,\(Y@I  
$~l :l[Zs  
/* v?t+%|dzA  
* (non-Javadoc) +z_0?x  
* QUO?q+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9w|q':<  
*/ _t7A'`Dh]  
public void sort(int[] data) { 2I5@zm ea  
int temp; #=c%:{O{4R  
for (int i = 0; i < data.length; i++) { $$w 1%#F =  
int lowIndex = i; mNzZ/*n:  
for (int j = data.length - 1; j > i; j--) { < XU]%}o  
if (data[j] < data[lowIndex]) { ^  +G> N  
lowIndex = j; UKdzJEhG  
} QS_xOQ '  
} mE1*F'0a  
SortUtil.swap(data,i,lowIndex); hvwr!(|W  
} b(F`$N@7C  
} Ex{]<6UAu  
B("kE`  
} A}o1I1+  
9hQ{r 2  
Shell排序: 7Udr~ 0_)  
}0o0"J-$  
package org.rut.util.algorithm.support; psBBiHB[L  
CS  
import org.rut.util.algorithm.SortUtil; /$KW$NH4z  
5;+Bl@zGu  
/**  }#1g;  
* @author treeroot YZd4% zF  
* @since 2006-2-2 !{+(oDN  
* @version 1.0 x$t=6@<]  
*/ DuaOi1Gw  
public class ShellSort implements SortUtil.Sort{ QGa"HG5NF  
d*(1t\  
/* (non-Javadoc) -Cl0!}P4I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YI/vt2  
*/ mi+I)b=  
public void sort(int[] data) { 4f+Ke*^[RA  
for(int i=data.length/2;i>2;i/=2){ wcO_;1_ H  
for(int j=0;j insertSort(data,j,i); o_S8fHqjt  
} 6b0#z#E  
} q>?oV(sF  
insertSort(data,0,1); L))(g][;  
} d+kIof,  
A-kI_&g\Og  
/** b=sc2 )3?  
* @param data S&yCclM  
* @param j hhpH)Bi=  
* @param i SExd-=G  
*/ 6w' ^,V  
private void insertSort(int[] data, int start, int inc) { &( Z8G~h4  
int temp; &WIPz\  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /Bc ;)~  
} #qzozQ4  
} )7f:hg  
} p AD@oPC  
%*,'&S  
} 6D>o(b2  
d)LifsD)  
快速排序: m]85F^R0  
N. uw2Y%  
package org.rut.util.algorithm.support; UGIyNMY  
6+>q1,<  
import org.rut.util.algorithm.SortUtil; ;Q ]bV52  
[/I4Pe1Yj%  
/** `5 bHZ  
* @author treeroot 6g)21Mh#  
* @since 2006-2-2 E0w>c'kH  
* @version 1.0 n-uoY<;hp  
*/ s i C/k*  
public class QuickSort implements SortUtil.Sort{ V7.EDE2A3  
SNcaIzbr  
/* (non-Javadoc) /P320[B}m&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YS &3+Tp  
*/ }I !D65-#'  
public void sort(int[] data) { Vg0Rc t  
quickSort(data,0,data.length-1); Rc @p!Xi  
}  \:Q)Ef  
private void quickSort(int[] data,int i,int j){ XB2[{XH,  
int pivotIndex=(i+j)/2; [W` _`  
file://swap P@)z Nik[  
SortUtil.swap(data,pivotIndex,j); C"K(-/  
Y*0mC"n}  
int k=partition(data,i-1,j,data[j]); HqOzArp3  
SortUtil.swap(data,k,j); |GLa `2q|  
if((k-i)>1) quickSort(data,i,k-1); C/!kMMh>vV  
if((j-k)>1) quickSort(data,k+1,j); E`$d!7O  
ftRf~5d2  
} bNi\+=v<Ys  
/** 40+~;20  
* @param data d=`hFwD9  
* @param i J'W6NitMr  
* @param j Pi`}-GUe,  
* @return wP29 xV"5  
*/ NLRgL'+F  
private int partition(int[] data, int l, int r,int pivot) { 6cDe_v|,  
do{ |4UW.dGHPo  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,5.ve)/dE  
SortUtil.swap(data,l,r); @uApm~}  
} %8s$l'Q;  
while(l SortUtil.swap(data,l,r); l!5fuB8  
return l; w,n&K6<  
} v25]}9/C  
1?\G6T  
} /SO 4O|b  
\b6H4aQii  
改进后的快速排序: ye4 T2=  
4CCtLHb  
package org.rut.util.algorithm.support; rE)lt0mkv  
as6a)t.^  
import org.rut.util.algorithm.SortUtil; `saDeur#X  
'W(!N%u  
/** Gf*|f"O  
* @author treeroot ap,%)on^  
* @since 2006-2-2 Xy0*1$IS]  
* @version 1.0 ^VabXGzo#  
*/ 9}G.Fr  
public class ImprovedQuickSort implements SortUtil.Sort { /{il;/Vj  
Q*&k6A"jx  
private static int MAX_STACK_SIZE=4096; SA!P:Q?h  
private static int THRESHOLD=10; f-$%Ck$%,  
/* (non-Javadoc) 6_}& WjU'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ls51U7  
*/ cc37(=o KL  
public void sort(int[] data) { re[v}cB  
int[] stack=new int[MAX_STACK_SIZE]; 20h+^R3{Z  
w\SfzJN  
int top=-1; ?9W2wqN>o  
int pivot; ?Pbh&!  
int pivotIndex,l,r; oQ YmywY  
]fiAV|'^  
stack[++top]=0; $1KvL8  
stack[++top]=data.length-1; |&wwH&<[z  
I.'(n8*  
while(top>0){ Ct@OS227x  
int j=stack[top--]; A-S!Z2m\  
int i=stack[top--]; wB%N}bi!  
5|:t$  
pivotIndex=(i+j)/2; ZF@T,i9  
pivot=data[pivotIndex]; s\/$`fuhx  
K-X@3&X}  
SortUtil.swap(data,pivotIndex,j); 0*y|k1  
'j&+Pg)@  
file://partition MVDEVq0  
l=i-1; ip)gI&kN`z  
r=j; ^p7g[E&  
do{ 4C]>{osv  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); g._`"c  
SortUtil.swap(data,l,r); 8r{:d i*  
} ]'q"Kw/10  
while(l SortUtil.swap(data,l,r); y*oH"]D  
SortUtil.swap(data,l,j); OUM^ u*  
K (px-jY  
if((l-i)>THRESHOLD){ N Ftmus  
stack[++top]=i; QY7Thnp1  
stack[++top]=l-1; `514HgR  
} 3OZu v};k  
if((j-l)>THRESHOLD){ .G/>X%X  
stack[++top]=l+1; I_"Kh BM  
stack[++top]=j; )\3 RR.p  
} u*"mdL2  
Z)qts=  
} -h%!#g  
file://new InsertSort().sort(data); (6g;FD:"6  
insertSort(data); 8 o^ h\9I  
} F<9S,  
/** Ew,1*WK!  
* @param data xPp\OuwK  
*/  "o{o9.w  
private void insertSort(int[] data) { I%?ia5]H  
int temp; G_cWp D/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j84g6;4Dv  
} S!oG|%VuB#  
} N"k IQe*}1  
} 8`]1Nt!*B  
@a]O(S>Ub  
} P(|+1$#[  
5&Vp(A[m[  
归并排序: Et0[HotO  
'n$TJp|s  
package org.rut.util.algorithm.support; #]vs*Sz  
l!7O2Ai5  
import org.rut.util.algorithm.SortUtil; aePLP  
5vSJjhS  
/** `=QRC.b  
* @author treeroot FG @ ')N!g  
* @since 2006-2-2 A8jj]J+  
* @version 1.0 0 v> *P*  
*/ &ZR}Z7E*=  
public class MergeSort implements SortUtil.Sort{ .?^a|]  
9\J6G8b>|I  
/* (non-Javadoc) B\mRH V!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [+8in\T i  
*/ yE{(Ebm  
public void sort(int[] data) { A@81wv  
int[] temp=new int[data.length]; a 9H^e<g  
mergeSort(data,temp,0,data.length-1); y7Sey;  
} qh)10*FB  
WJA0 `<~  
private void mergeSort(int[] data,int[] temp,int l,int r){ PgMU|O7To  
int mid=(l+r)/2; b,r{wrLe)  
if(l==r) return ; Y Z.? k4>  
mergeSort(data,temp,l,mid); UD6:X&Un  
mergeSort(data,temp,mid+1,r); M[1!#Q><!  
for(int i=l;i<=r;i++){ 8G<{L0J%!  
temp=data; a\]g lw\;  
} tX'2 $}  
int i1=l; yZc_PC`  
int i2=mid+1; [!'fE #"a  
for(int cur=l;cur<=r;cur++){ |9*8u>|RC  
if(i1==mid+1) :41Ch^\E  
data[cur]=temp[i2++]; aFf(m-  
else if(i2>r) /UP1*L  
data[cur]=temp[i1++]; g*-%.fNA  
else if(temp[i1] data[cur]=temp[i1++]; o-7,P RmKN  
else 2zN"*Wkn  
data[cur]=temp[i2++]; i[V\RKH*F  
} +> Xe_  
} @en*JxIM  
A.wuB  
} ,B8u?{O  
%}/|/=  
改进后的归并排序: ?j^:jV  
P g.j]  
package org.rut.util.algorithm.support; j.O+e|kxU  
hg Pzx@  
import org.rut.util.algorithm.SortUtil; QTLGM-Z  
`~;`q  
/** S|pf.l  
* @author treeroot Ax{C ^u  
* @since 2006-2-2  U rL|r.  
* @version 1.0 (JI[y"2  
*/ e,8[fp-7  
public class ImprovedMergeSort implements SortUtil.Sort { Z#znA4;)  
< ?{ic2j#  
private static final int THRESHOLD = 10; qS?uMms7w  
tcD DX'S  
/* e?yrx6  
* (non-Javadoc) J2avt  
* HY>zgf,0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u [Dz~  
*/ ,.,spoV  
public void sort(int[] data) { 8m"(T-wb6{  
int[] temp=new int[data.length]; efX iZ  
mergeSort(data,temp,0,data.length-1); R^k)^!/$f  
} lNbAt4]}f(  
)Rc  
private void mergeSort(int[] data, int[] temp, int l, int r) { X')t6DQ(I  
int i, j, k; 155vY  
int mid = (l + r) / 2; P+<4w  
if (l == r) /{%p%Q[X  
return; c\DMeYrg  
if ((mid - l) >= THRESHOLD) yBkcYHT  
mergeSort(data, temp, l, mid); * &O4b3R  
else \PL0-.t,  
insertSort(data, l, mid - l + 1); CAbR+ y  
if ((r - mid) > THRESHOLD) YS0^ !7u  
mergeSort(data, temp, mid + 1, r); mV++7DY  
else VxW>Xx G0  
insertSort(data, mid + 1, r - mid); \ IX|{]*D  
^`+Kjhht  
for (i = l; i <= mid; i++) { ;|r<mT/,  
temp = data; B1 Y   
} c0f8*O4i  
for (j = 1; j <= r - mid; j++) { b"pN;v  
temp[r - j + 1] = data[j + mid]; EV[ BB;eb  
} 9][A1 +"  
int a = temp[l]; k< $(  
int b = temp[r]; B+4WnR1%T  
for (i = l, j = r, k = l; k <= r; k++) { M~l\rg8  
if (a < b) { fM!@cph(8  
data[k] = temp[i++]; 4WXr~?Vq9  
a = temp; FM,o&0HSd  
} else { zT+ "Z(oz,  
data[k] = temp[j--]; e !N%   
b = temp[j]; uFnq3m^u  
} <Gj]XAoe%  
} d$B+xW  
} @ S)p{T5G  
W(o#2;{ ln  
/** t*wV<b  
* @param data x \b+B  
* @param l \2[sUY<W  
* @param i vRMGNz_P7[  
*/ q'KXn0IY#  
private void insertSort(int[] data, int start, int len) { 1 EwCF  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); C:ntr=3J  
} v(`5exWV  
} d~;U-  
} CZ.HQc  
} o+g\\5s  
A \-r%&.  
堆排序: O2S{*D={  
QRHM#v S  
package org.rut.util.algorithm.support; T854}RX[{  
~}g) N  
import org.rut.util.algorithm.SortUtil; \me-#: Gu  
I>:.fHvUC  
/** >K*TgG6!X  
* @author treeroot ofuQ`g1hb  
* @since 2006-2-2 MZS/o3  
* @version 1.0 6. 6x$y3v  
*/ TlpQ9T  
public class HeapSort implements SortUtil.Sort{ O#`y;%  
no9=K4h`  
/* (non-Javadoc) N >k,"=N /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `o6T)49  
*/ mhMRY9ahB  
public void sort(int[] data) { -~_;9[uV  
MaxHeap h=new MaxHeap(); i+~H~k}"X  
h.init(data); [='<K  
for(int i=0;i h.remove(); C8$/z>tQ  
System.arraycopy(h.queue,1,data,0,data.length); [-h=L Jf#  
} &?M'(` ~  
v2}>/b)  
private static class MaxHeap{ <^"0A  
b ix}#M  
void init(int[] data){ Xagz(tm/  
this.queue=new int[data.length+1]; (5>IF,}!L  
for(int i=0;i queue[++size]=data; w C-x'  
fixUp(size); 6&L8 {P  
} L87=*_!B;  
} .`+N+B(4  
X@Yl<9|i  
private int size=0; m-R`(  
{%QWv%|  
private int[] queue; ^i6`w_/  
q@}tv =}  
public int get() { uY:u[  
return queue[1]; =EUi| T4:  
} nACKSsWqI  
^\FOMGai  
public void remove() { HfA@tZ5q|U  
SortUtil.swap(queue,1,size--); kRB2J3Nt.  
fixDown(1); L%fJH_$_s  
} { u1\M  
file://fixdown =QW:},sp  
private void fixDown(int k) { ;{ESo?$*  
int j; ef]60OtP  
while ((j = k << 1) <= size) { b0[H{q-z{X  
if (j < size %26amp;%26amp; queue[j] j++; >?ckBU9  
if (queue[k]>queue[j]) file://不用交换 ])mYE }g  
break; ,dSP%?vV  
SortUtil.swap(queue,j,k); z+X DN:  
k = j; 5db9C}0  
} X XC(R  
} )X5en=[)O  
private void fixUp(int k) { EALgBv>#ZL  
while (k > 1) { (zhi/>suG  
int j = k >> 1; wj|[a,(r  
if (queue[j]>queue[k]) q|kkdK|N/Y  
break; H1a<&7  
SortUtil.swap(queue,j,k); mW_ N-z  
k = j; QxeK-x^  
} #B8V2_M  
} 8? &!@3n  
fz`\-"f]  
} PVX23y;  
(-esUOB.  
} 2JLXDkZ  
Oh/2$72  
SortUtil: 8eZ^)9m  
SD=9fh0l  
package org.rut.util.algorithm; nfA#d-  
`Y.Q{5Y  
import org.rut.util.algorithm.support.BubbleSort; *N3X"2X:  
import org.rut.util.algorithm.support.HeapSort; c_)lTI4  
import org.rut.util.algorithm.support.ImprovedMergeSort; %$}* y   
import org.rut.util.algorithm.support.ImprovedQuickSort; bs\7 juHt  
import org.rut.util.algorithm.support.InsertSort; >e9xM Gv  
import org.rut.util.algorithm.support.MergeSort; S_Ug=8r4  
import org.rut.util.algorithm.support.QuickSort; h-=lZ~W~  
import org.rut.util.algorithm.support.SelectionSort; 1g bqHxWI  
import org.rut.util.algorithm.support.ShellSort; Yb Dz{m  
ul[+vpH9  
/** a^.5cJ$]  
* @author treeroot GN@(!V#/4  
* @since 2006-2-2 br_D Orq|  
* @version 1.0 o~={M7 m  
*/ <jHo2U8/"s  
public class SortUtil { 9ZXEy }q57  
public final static int INSERT = 1; B3-;]6  
public final static int BUBBLE = 2; q8P$Md-=b1  
public final static int SELECTION = 3; #ybtjsu'"U  
public final static int SHELL = 4; )|CF)T-  
public final static int QUICK = 5; w} 1~  
public final static int IMPROVED_QUICK = 6; sU 5/c|&  
public final static int MERGE = 7; ^Yu%JCN8g  
public final static int IMPROVED_MERGE = 8; y759S)U>>p  
public final static int HEAP = 9; O'~;|-Z<  
KL6FmL)HH  
public static void sort(int[] data) { |XoW Z,K  
sort(data, IMPROVED_QUICK); z 2Rg`1B  
} ={gfx;  
private static String[] name={ NY9\a[[^[8  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cR"?EQ] `N  
}; C lekB  
V [KFZSA  
private static Sort[] impl=new Sort[]{ '+*{u]\  
new InsertSort(), 95^A !  
new BubbleSort(), +YK/^;Th  
new SelectionSort(), y0f"UH/   
new ShellSort(), ^YwTO/Q|  
new QuickSort(), ^i!6q9<{e  
new ImprovedQuickSort(), 1T@#gE["Ic  
new MergeSort(), z6f N)kw  
new ImprovedMergeSort(), *aT\V64  
new HeapSort() 2%*mL98WK  
}; N 56/\1R  
U";8zplU  
public static String toString(int algorithm){ )T26 cT$  
return name[algorithm-1]; I# U"DwM  
} .PJCBT e  
9et%Hn.K'  
public static void sort(int[] data, int algorithm) { qH1&tW$  
impl[algorithm-1].sort(data); iR(jCD?) Y  
} ]E!b&  
,U^V]jC  
public static interface Sort { uF89B-t  
public void sort(int[] data); B%Vz -t  
} ROc)LCA  
xvx+a0 A  
public static void swap(int[] data, int i, int j) { Q5~Y;0'  
int temp = data; P>s 3Rh3:  
data = data[j]; s2rwFj8 |  
data[j] = temp; 9pJk.Np0   
} o@!Uds0  
} ~ M!s0jT  
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10+5=?,请输入中文答案:十五