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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。 1 .X@;  
插入排序: "vGW2~*)  
D-4f.Tq4#  
package org.rut.util.algorithm.support; JLi|Td "1%  
ty`DJO=Omj  
import org.rut.util.algorithm.SortUtil; ;6 wA"  
/** 'QIqBU'~  
* @author treeroot  bF(f*u  
* @since 2006-2-2 %IRi1EmN8  
* @version 1.0 o]:9')5^  
*/ \L\b$4$d  
public class InsertSort implements SortUtil.Sort{ 0RK!/:'  
D0q ":WvE  
/* (non-Javadoc) |I|fMF2K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R$Q.sE  
*/  *,m;  
public void sort(int[] data) { ? qA]w9x  
int temp; F>cv<l =6l  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @K]|K]cby  
} *:NQ&y*uj  
} 8*fv'  
} HKr Mim-  
)WoxMmz  
} .6V}3q$-@  
^I)N. 5  
冒泡排序: e$pV%5=  
<9%R\_@$H  
package org.rut.util.algorithm.support; g[t [/TV   
BSMwdr  
import org.rut.util.algorithm.SortUtil; V_:&S2j  
c=+!>Z&i$G  
/** )0R'(#  
* @author treeroot \G3rX9xG  
* @since 2006-2-2 X|8c>_}  
* @version 1.0 F/A|(AH'  
*/ Ow077v ?  
public class BubbleSort implements SortUtil.Sort{ 9E6R0D}  
pD74+/DD  
/* (non-Javadoc) 3t6 LT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9I/N4sou  
*/ l\?c}7k  
public void sort(int[] data) { B+0hzkPY  
int temp; ]d%8k}U  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +H Usz ?  
if(data[j] SortUtil.swap(data,j,j-1); 3{h_&Gbo'D  
} !L8#@BjU  
} (b6NX~G-:  
} +KEWP\r  
} : \}(& >  
p6WX9\qS(  
} 6i*sm.SDw  
orvp*F{7[H  
选择排序: $2el&I  
- CWywuD  
package org.rut.util.algorithm.support; y|q3Wa  
nJLFfXWx  
import org.rut.util.algorithm.SortUtil; 8Bg;Kh6B  
TBrPf-Xr  
/** +t:0SRSt  
* @author treeroot (@}!0[[^  
* @since 2006-2-2 {91nL'-'  
* @version 1.0 kE(mVyLQ  
*/ Pc o'l#:  
public class SelectionSort implements SortUtil.Sort { W8!Qv8rf  
lu6(C  
/* Uv~QUL3>  
* (non-Javadoc) T"}vAG( .O  
* |B2+{@R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PJ'E/C)i  
*/ Cs ifKHI  
public void sort(int[] data) { ;]jNk'oa  
int temp; %9RF   
for (int i = 0; i < data.length; i++) { !#" zTj  
int lowIndex = i; P A OJ\U  
for (int j = data.length - 1; j > i; j--) { SC])?h-Fw  
if (data[j] < data[lowIndex]) { zZC9\V}R  
lowIndex = j; V,?yPi$#E  
} .K<Q&  
} ED& `_h7?  
SortUtil.swap(data,i,lowIndex); o\)F}j&b#=  
} 9 5RBO4w%w  
} B !=F2  
uc"P3,M  
} 2Q"K8=s  
E\2%E@0#  
Shell排序: .q3/_*  
y<bDTeoo  
package org.rut.util.algorithm.support; Iy3GE[  
7 ^mL_SMj  
import org.rut.util.algorithm.SortUtil; lo!+f"7ym\  
~**.|%Kc  
/** AjgF6[B  
* @author treeroot -8rjgB~."/  
* @since 2006-2-2 aCLqk'  
* @version 1.0 A6iq[b]  
*/ Nl(3Xqov  
public class ShellSort implements SortUtil.Sort{ K>l~SDcZ3  
78H'ax9m  
/* (non-Javadoc) Nm>A'bLM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W1FI mlXS  
*/ 4vV:EF-  
public void sort(int[] data) { +|>kCtZH%  
for(int i=data.length/2;i>2;i/=2){ ,T8~L#M~  
for(int j=0;j insertSort(data,j,i); nmi|\mof  
} e,XYVWY%  
} w~?~g<q  
insertSort(data,0,1); _W'-+,  
} ?_"ik[w}  
:'&brp3ii=  
/** Zdo'{ $  
* @param data 3J438M.ka  
* @param j yD6[\'%  
* @param i hzbw>g+  
*/ Wh 2tNyS  
private void insertSort(int[] data, int start, int inc) { A:9?ZI/X  
int temp; '1)$'   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Eue~Y+K*b  
} Z} r*K%  
} 2oRg 2R}  
} .JiziFJ@mj  
Y~E`9  
} 3% ;a)c;D  
:7?FF'u  
快速排序: qXtC^n@x  
M b1s F  
package org.rut.util.algorithm.support; WPG(@zD  
;Nj7qt  
import org.rut.util.algorithm.SortUtil; xZF}D/S?Ov  
4J([6<  
/** pDCeQ6?  
* @author treeroot P&e\)Z|  
* @since 2006-2-2 @w!PaP  
* @version 1.0 I[##2  
*/ \1 &,|\E#  
public class QuickSort implements SortUtil.Sort{ r[Hc>wBv  
t; {F%9j{  
/* (non-Javadoc) Q=20IQp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z4]api(xZ  
*/ 58J}{Req  
public void sort(int[] data) { zb<6 Ov  
quickSort(data,0,data.length-1); )Z?Ym.0/  
} 4l45N6"  
private void quickSort(int[] data,int i,int j){ |:<f-j7t~  
int pivotIndex=(i+j)/2; J 9iy  
file://swap 8j % Tf;  
SortUtil.swap(data,pivotIndex,j); o/Q;f@  
6N S201o  
int k=partition(data,i-1,j,data[j]); O[)kboY  
SortUtil.swap(data,k,j); 5m(^W[u `  
if((k-i)>1) quickSort(data,i,k-1); /j|G(vt5  
if((j-k)>1) quickSort(data,k+1,j); .:QLk&a,:,  
Nyj( 0W  
} ,1CIBFY  
/** qd)/9*|Jl  
* @param data krvp&+uX  
* @param i .KUv( -  
* @param j Z%/=|[9i  
* @return }YNR"X9*)/  
*/ aAMVsE{  
private int partition(int[] data, int l, int r,int pivot) { C-MjJ6D<  
do{ ~C`^6UQr/?  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4'A!; ]:  
SortUtil.swap(data,l,r); 2=`o_<P'"  
} l6 H|PR{  
while(l SortUtil.swap(data,l,r); \(Y\|zC'0$  
return l; {I#]@,  
} B%76rEpvW;  
emPM4iG?!  
} ^y1j.M@q  
(/j/>9iro  
改进后的快速排序: T iiWp!mX  
H>B&|BO_[  
package org.rut.util.algorithm.support; j; y#[|  
UsQ+`\|  
import org.rut.util.algorithm.SortUtil; ;J2zp*|  
q $tUH)0  
/** 9"A`sGZ  
* @author treeroot =~H<Z LE+  
* @since 2006-2-2 kep/+J-u  
* @version 1.0 OAkZKG|  
*/ ~h85BF5  
public class ImprovedQuickSort implements SortUtil.Sort { g8xQ|px  
=U|.^5sa#  
private static int MAX_STACK_SIZE=4096; VAf1" )pC  
private static int THRESHOLD=10; ;he"ph=>  
/* (non-Javadoc) zhRB,1iG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8a'.ZdqC?  
*/ ( _)jkI \  
public void sort(int[] data) { J| bd)0  
int[] stack=new int[MAX_STACK_SIZE]; S(8$S])0  
a$"Hvrj  
int top=-1; R:k5QD9/&p  
int pivot; N@1+O,o  
int pivotIndex,l,r; oxkoA  
4^~(Mh-Mw  
stack[++top]=0; OFv%B/O  
stack[++top]=data.length-1; TQ*1L:X7M&  
^_u kLzP9  
while(top>0){ /1Q(b  
int j=stack[top--]; \6<=$vD  
int i=stack[top--]; M .JoHH  
sy"^?th}b  
pivotIndex=(i+j)/2; u\{ g(li-I  
pivot=data[pivotIndex]; =L:4i\4  
2h1C9n%j9  
SortUtil.swap(data,pivotIndex,j); aV?@s4  
+hT:2TXn  
file://partition )oPLl|=h  
l=i-1; ruzspS  
r=j; 3? 7\ T#=  
do{ M)N?qRD  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }\#Rot>Y  
SortUtil.swap(data,l,r); TDNQu_E  
} n3Z 5t  
while(l SortUtil.swap(data,l,r); 5b[jRj6  
SortUtil.swap(data,l,j); ]0)|7TV*  
WP+oFkw>  
if((l-i)>THRESHOLD){ f Tl<p&b  
stack[++top]=i; zN@} #Hk  
stack[++top]=l-1; 7Ka l"Ew  
} 0F|AA"mMT  
if((j-l)>THRESHOLD){ r{ef.^&:  
stack[++top]=l+1; ~ZhraSI) G  
stack[++top]=j; hKjt'N:~ZY  
} s6zNV4  
[[Fx[  
} pDcjwlA%  
file://new InsertSort().sort(data); 7cO n9fIE  
insertSort(data); U($dx.`v#  
} {(wHPzq  
/** PGBQn#c<  
* @param data `gb5 "`EZ  
*/ C.E[6$oVc  
private void insertSort(int[] data) { <PD|_nZT  
int temp; HtzMDGV<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qWB%),`j>  
} "3t\em!  
} Gj`f--2GE  
} Ve14rn  
kGD|c=K}  
} mG}k 3e-  
`D)S-7BR  
归并排序: +(AwSh!  
@9_)On9hZ  
package org.rut.util.algorithm.support; MhH);fn  
Z1]"[U[;  
import org.rut.util.algorithm.SortUtil; a paIJ+^[  
\Ut S>4w\  
/** )[DpK=[N^p  
* @author treeroot ;xW{Ehq-h  
* @since 2006-2-2 eG^z*`**  
* @version 1.0 #KJZR{  
*/ ' PL_~  
public class MergeSort implements SortUtil.Sort{ n1)'cS5}  
gX"T*d>y  
/* (non-Javadoc) kv%)K'fU4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w)<4>(D  
*/ 4[H,3}p9H  
public void sort(int[] data) { Spc&X72I  
int[] temp=new int[data.length]; STp!8mL  
mergeSort(data,temp,0,data.length-1); 5V rcR=?O  
} u-M] A z-  
u~)%tL  
private void mergeSort(int[] data,int[] temp,int l,int r){ *(VbPp_H_  
int mid=(l+r)/2; ^8\Y`Z0%  
if(l==r) return ; \I xzdFF#  
mergeSort(data,temp,l,mid); Wy,"cT  
mergeSort(data,temp,mid+1,r); w#d} TY  
for(int i=l;i<=r;i++){ b.(XS?4o  
temp=data; T]X{ @_  
} 2HVCXegq  
int i1=l; |lHFo{8"  
int i2=mid+1; Wbs^(iUU}  
for(int cur=l;cur<=r;cur++){ 9!S^^;PN&  
if(i1==mid+1) k7b(QADqUU  
data[cur]=temp[i2++]; j%Gbg J  
else if(i2>r) {"\q(R0  
data[cur]=temp[i1++]; |Rk37P {  
else if(temp[i1] data[cur]=temp[i1++]; (>r|j4$  
else bN4d:0Y  
data[cur]=temp[i2++]; T/5nu?v  
} ,@,LD  u  
} /W``LK>;?  
}*OD M6  
} 4Q/r[x/&C  
l^BEFk;  
改进后的归并排序: \)s3b/oap  
9OhR4 1B  
package org.rut.util.algorithm.support; yx 7loy$[  
;HT0w_,  
import org.rut.util.algorithm.SortUtil; F94V5_[  
!~tnt i6  
/** M;> ha,x  
* @author treeroot cnC_#kp  
* @since 2006-2-2 {!g?d<*  
* @version 1.0 }RH lYN  
*/ <f[9ju  
public class ImprovedMergeSort implements SortUtil.Sort { +%x^RV}  
*+&z|Pwv[^  
private static final int THRESHOLD = 10; hxP6C6S  
\4C)~T:*  
/* zAu}hVcW  
* (non-Javadoc) 6WCmp,*  
* KdS eCeddW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8\P JSr  
*/ i:R!T,  
public void sort(int[] data) { \S'cW B  
int[] temp=new int[data.length]; oNrEIgaA(+  
mergeSort(data,temp,0,data.length-1); T?Z OHH8  
} %pd5w~VP  
0\QYf0o   
private void mergeSort(int[] data, int[] temp, int l, int r) { |@OJ~5H/{  
int i, j, k; JPHUmv6  
int mid = (l + r) / 2; a{5H33JA  
if (l == r) .!!79 6hS  
return; q^u6f?B  
if ((mid - l) >= THRESHOLD) z{@= _5;  
mergeSort(data, temp, l, mid); A"`L~|&  
else M3)v-"  
insertSort(data, l, mid - l + 1); kA1f[ AL  
if ((r - mid) > THRESHOLD) ,7QBJ_-;QJ  
mergeSort(data, temp, mid + 1, r); 3s#|Y,{?6R  
else !Q[;5Lqt  
insertSort(data, mid + 1, r - mid); rK*hTjVn  
m]E o(P4+  
for (i = l; i <= mid; i++) { , &-S?|  
temp = data; }#YIl@E  
} %+/f'6kR  
for (j = 1; j <= r - mid; j++) { R A*(|n>  
temp[r - j + 1] = data[j + mid]; NEZH<#  
} .Y+mwvLpRG  
int a = temp[l]; \-DM-NrZ1U  
int b = temp[r]; ]w5ji  
for (i = l, j = r, k = l; k <= r; k++) { 1 VPg`+o  
if (a < b) { U<1}I.hDJ  
data[k] = temp[i++]; +'!h-x1y~  
a = temp; :17ee  
} else { p<<6}3~  
data[k] = temp[j--]; iJ5e1R8tN  
b = temp[j]; UeFtzty,a  
} S6= \r{V  
} 27}.s0{D  
} 4u7c7K>\Y  
m>g}IX&K'  
/** *G8'Fjin'T  
* @param data Qf/j:  
* @param l Jv-zB]3&  
* @param i 2pVVoZV.<  
*/ =]8f"wAh*  
private void insertSort(int[] data, int start, int len) { fp`U?S6  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ADuZ}]  
}  gvvFU,2  
} @WMj^t1D+  
} rGQ86L<  
} 3 (Gygq#  
`[w}hFl~q  
堆排序: O8!!UA8V  
l#mqV@?A~  
package org.rut.util.algorithm.support; }M;sz  
X`8Y[Vb3}  
import org.rut.util.algorithm.SortUtil; pT|./ Fe  
H&"_}  
/** s0x@ u  
* @author treeroot kfH9Y%bOy  
* @since 2006-2-2 {"qW~S90YO  
* @version 1.0 >b[4  
*/ !pE>O-| K  
public class HeapSort implements SortUtil.Sort{ q8&4=eV\A  
H620vlC}V  
/* (non-Javadoc) D/+@d:-G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T\<M?`Y  
*/ UHTb61Gs  
public void sort(int[] data) { ~hxeD" w  
MaxHeap h=new MaxHeap(); C.DoXE7  
h.init(data); V>~*]N^f  
for(int i=0;i h.remove(); q>Dr)x)  
System.arraycopy(h.queue,1,data,0,data.length); A- <.#  
} WV9[DFU  
t!+%g) @  
private static class MaxHeap{ 7$E2/@f  
%3#b6m~  
void init(int[] data){ CNpCe-%&  
this.queue=new int[data.length+1]; A5(kOtgiT  
for(int i=0;i queue[++size]=data; SLbavP#G  
fixUp(size); S^_JC  
} x`j_d:C~G  
} AmUe0CQ:k'  
K6 PC&+x  
private int size=0; 8trm`?>  
bCe[nmE2  
private int[] queue; oW\Q>c7 =  
r zc 3k~@  
public int get() { #,Fx@3y\a  
return queue[1]; _.s\qQ  
} 72B zvY.  
+4p2KYO  
public void remove() { b*$o[wO9  
SortUtil.swap(queue,1,size--); .pNq-T  
fixDown(1); =}6Z{}(TT  
} i&AXPq>`  
file://fixdown jb6ZAT<8  
private void fixDown(int k) { 06j)P6Iju  
int j; dqK  
while ((j = k << 1) <= size) { \Ho#[k=y*/  
if (j < size %26amp;%26amp; queue[j] j++; .1l[l5$  
if (queue[k]>queue[j]) file://不用交换 w|3fioLs  
break; =qVAvo'  
SortUtil.swap(queue,j,k); KJ05Zx~uma  
k = j; Rwi5+;N  
} ,sy / r V  
} \f<thd*bC  
private void fixUp(int k) { *axza~d  
while (k > 1) { =#PudF.\  
int j = k >> 1; a*e|>pDO  
if (queue[j]>queue[k])  t}* qs  
break; QvyUd%e'5A  
SortUtil.swap(queue,j,k); {BwN4r46  
k = j; :;#c:RKi:  
} y D=)&->Ra  
} +LU).  
Qcy+ {j]  
} ;_;H(%uY  
NEjB jLJZ  
} j2C^1:s@m  
^{:[^$f:l  
SortUtil: s^x , S  
*jqPKK/  
package org.rut.util.algorithm; '!2  
'j =PbA  
import org.rut.util.algorithm.support.BubbleSort; r]K0 ]h@B  
import org.rut.util.algorithm.support.HeapSort; 0v,`P4_k  
import org.rut.util.algorithm.support.ImprovedMergeSort; YH:W]  
import org.rut.util.algorithm.support.ImprovedQuickSort; r>D[5B  
import org.rut.util.algorithm.support.InsertSort; !{|yAt9kP  
import org.rut.util.algorithm.support.MergeSort; x,@O:e  
import org.rut.util.algorithm.support.QuickSort; o2t@-dNi  
import org.rut.util.algorithm.support.SelectionSort; 4$#ia F  
import org.rut.util.algorithm.support.ShellSort; 9Y*VzQE  
T<_1|eH  
/** o::ymAj  
* @author treeroot Yc( )'6  
* @since 2006-2-2 A?<"^<A^  
* @version 1.0 gJ}'O4*b  
*/ ;L/T}!Dx  
public class SortUtil { 62KW HB9S  
public final static int INSERT = 1; >G -?e!  
public final static int BUBBLE = 2;  MYW 4@#  
public final static int SELECTION = 3; Ij,?G*  
public final static int SHELL = 4; 9dhFQWz"  
public final static int QUICK = 5; YfYL?G  
public final static int IMPROVED_QUICK = 6; u8)r W  
public final static int MERGE = 7; E t[QcB3  
public final static int IMPROVED_MERGE = 8; 1Y"y!\t7G  
public final static int HEAP = 9; GCmVmOdKr  
F$pd]F!#  
public static void sort(int[] data) { iH -x  
sort(data, IMPROVED_QUICK); Q(eQZx{  
} 5;uX"z G  
private static String[] name={ nD{;4$xP`  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )a2m<"  
}; GA*Khqdid  
& ;x1Rx  
private static Sort[] impl=new Sort[]{ &|,qsDK(  
new InsertSort(), wBaFC\CW  
new BubbleSort(), 4~J1pcBno%  
new SelectionSort(), /$N#_Xblr  
new ShellSort(), JT+lWhy  
new QuickSort(), =u1w\>(2Y  
new ImprovedQuickSort(), ,)\5O0 D6  
new MergeSort(), `oI/;&  
new ImprovedMergeSort(), x'PjP1  
new HeapSort() 'jO-e^qT  
}; J}`$WL:  
)^a#Xn3z  
public static String toString(int algorithm){ [/`Hz]R  
return name[algorithm-1]; _TeRsA  
} iPi'5g(a   
"r(pK@h  
public static void sort(int[] data, int algorithm) { V s t e$V  
impl[algorithm-1].sort(data); 9kiy^0 7G  
} [(ib9_`A'1  
Ih0> ]h-7  
public static interface Sort { ,'0oj$~S:  
public void sort(int[] data); Yoym5<xE  
} T;e(Q,!H  
V$]a&wM<5  
public static void swap(int[] data, int i, int j) { V?pO~q o  
int temp = data; Bd]DhPhJ  
data = data[j]; /bj`%Q.n  
data[j] = temp; C4K&flk]  
} 9YsO+7[  
} |a~&E@0c  
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10+5=?,请输入中文答案:十五