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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。 de;GrPLAi  
插入排序: Ie`13 L2  
PV/7 7{'  
package org.rut.util.algorithm.support; JA'h4AXk  
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import org.rut.util.algorithm.SortUtil; pk3<|  
/** V %YiAr>  
* @author treeroot Eg2[k.{P  
* @since 2006-2-2 (jFGa2{  
* @version 1.0 elG<k%/2  
*/ F;l$.9?.s  
public class InsertSort implements SortUtil.Sort{ UF<uU-C"  
l#H#+*F  
/* (non-Javadoc) \CXQo4P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5KDGSo  
*/ IuOgxm~Y  
public void sort(int[] data) { L}}y'^(  
int temp; _',prZ*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LX@/RAd vz  
} %T)oCjM[\  
} C_n9T{k  
} hvuIxqv!y  
%9M~f*  
}  y7$iOR  
6C-/`>m  
冒泡排序: m"fNK$_d  
E !a|Xp  
package org.rut.util.algorithm.support; \yd s5g!:  
yfx7{naKC`  
import org.rut.util.algorithm.SortUtil; e|p$d:#!  
USVqB\#  
/** KTn}w:+B\  
* @author treeroot 8ZKo_I\  
* @since 2006-2-2 h|h>u ^@  
* @version 1.0 3v mjCm  
*/ )Jk0v_ X  
public class BubbleSort implements SortUtil.Sort{ Y9=(zOqv  
QnI.zq V  
/* (non-Javadoc) i,nm`Z>u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1TM~*<Jb  
*/ DS2)@  
public void sort(int[] data) { 0vGyI>  
int temp; $x#FgD(iI  
for(int i=0;i for(int j=data.length-1;j>i;j--){ <|*'O5B  
if(data[j] SortUtil.swap(data,j,j-1); #"ftI7=42  
} MzYavg`  
} |T4kqW{  
} "0EA;S8$8  
} t UR c bwV  
jhGlG-^  
} jDRe)bo4  
nq1 9Q)  
选择排序: %Td )0Lqp  
XNH4==4  
package org.rut.util.algorithm.support; P` '$  
OK`Z@X_,bW  
import org.rut.util.algorithm.SortUtil; D22Lu ;E  
q2_`v5t  
/** t]^_ l$  
* @author treeroot ,fnsE^}.U  
* @since 2006-2-2 c-5jYwV  
* @version 1.0 E/za @W  
*/ 1]\TI7/ n  
public class SelectionSort implements SortUtil.Sort { b0a}ME&1  
L8V3BH7B  
/* C%ytkzG_  
* (non-Javadoc) 5@XV6  
* S;A)C`X&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I}v]Zm9  
*/ K@@9:T$  
public void sort(int[] data) { >Wh3MG6  
int temp; y67uH4&Vm  
for (int i = 0; i < data.length; i++) { ggou*;'  
int lowIndex = i; !%mi&ak(Rn  
for (int j = data.length - 1; j > i; j--) { W>L@j(  
if (data[j] < data[lowIndex]) { Q-zdJt  
lowIndex = j; l_v*7d  
} 1. SkIu%  
} wk 02[  
SortUtil.swap(data,i,lowIndex); gUGOHd(A  
} -]QguZE  
} C<t RU5|  
,xj3w#`zaf  
} vfXJYw+6_  
n{{ P 3f  
Shell排序: }Z-I2 =]  
taCCw2s-8*  
package org.rut.util.algorithm.support; m %Y( O  
s$3`X(Pn  
import org.rut.util.algorithm.SortUtil; 0l1.O2 -  
u0 BMyH  
/** v?%3~XoH  
* @author treeroot .M+v?A d  
* @since 2006-2-2 &Y=.D:z<  
* @version 1.0 3`rIV*&_{  
*/ eKJ:?Lxv;  
public class ShellSort implements SortUtil.Sort{ M,JA;a, _  
&gWiu9WbS  
/* (non-Javadoc) !u%9;>T7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oc^m_U8>^  
*/ 6oA~J]<  
public void sort(int[] data) { 1C'P)f28  
for(int i=data.length/2;i>2;i/=2){ Wo2 v5-  
for(int j=0;j insertSort(data,j,i); WQ.i$ID/  
} 9ET/I$n  
} G)~MbesJ  
insertSort(data,0,1); :;_#5  
} ;ct)H* y  
QmHwn)Ly  
/** 7&px+155  
* @param data Q!x`M4   
* @param j tO4):i1  
* @param i (h|ch#  
*/ k)i"tpw  
private void insertSort(int[] data, int start, int inc) { Ym:{Mm=ud  
int temp;  s<d!+<  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); KJ pj  
} Y.9~Bo<<r  
} !Z-9tYO  
} u/#&0_ P  
Uf^RLdoDn  
} 77^ "xsa  
~BtKd*~*  
快速排序: s~)L_ p  
f^u^-l  
package org.rut.util.algorithm.support; `1$y(w]  
k%^<}s@  
import org.rut.util.algorithm.SortUtil; ~ z>BfL  
Wk,6) jS=}  
/** i[8NO$tN1)  
* @author treeroot b^%?S8]h  
* @since 2006-2-2 %awVVt{aG  
* @version 1.0 []r T? -  
*/ ru DP529;  
public class QuickSort implements SortUtil.Sort{ 9,w}Xe=C  
H):-! ?:  
/* (non-Javadoc) 1N>6rN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `LE^:a:8,  
*/ s{cKBau  
public void sort(int[] data) { ;*.(.  
quickSort(data,0,data.length-1); m]1!-`(*  
} N-D(y  
private void quickSort(int[] data,int i,int j){ Yg$@Wb6  
int pivotIndex=(i+j)/2; '1]+8E `Z  
file://swap zfirb  
SortUtil.swap(data,pivotIndex,j); n'ehB%"  
[h^f%  
int k=partition(data,i-1,j,data[j]); C#ZhsWS!b  
SortUtil.swap(data,k,j); Y=3X9%v9g  
if((k-i)>1) quickSort(data,i,k-1); ckAsGF_B~!  
if((j-k)>1) quickSort(data,k+1,j); QP+c?ct}hF  
T6,V  
} % <^[j^j}o  
/** G{/;AK  
* @param data pK<%<dIc  
* @param i ,;7`{Nab  
* @param j E3LBPXK  
* @return r7RU"H:j8  
*/ b#Jo Xa9  
private int partition(int[] data, int l, int r,int pivot) { @uoT{E[  
do{ HRj7n<>L=  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WBy[m ?d  
SortUtil.swap(data,l,r); <8g=BWA  
} !8we8)7  
while(l SortUtil.swap(data,l,r); L#`7FaM?  
return l; >kt~vJI  
} {ip=iiW2  
#>@<n3rq  
} <Kh?Ad>N  
?_8%h`z  
改进后的快速排序: y-%nJD$  
Xm%iPrl D  
package org.rut.util.algorithm.support; 2ve lH;  
V;H d)v( j  
import org.rut.util.algorithm.SortUtil; ^@M [t<  
O<4Q$|=&?  
/** 2wGF-V  
* @author treeroot p "/(>8  
* @since 2006-2-2 tF<^9stM  
* @version 1.0 #"hJpyW 4V  
*/ 7[4_+Q:}  
public class ImprovedQuickSort implements SortUtil.Sort { ^GE^Q\&D&  
)\0Ug7]?  
private static int MAX_STACK_SIZE=4096; ^WmGo]<B_  
private static int THRESHOLD=10; \5t`p67Ve_  
/* (non-Javadoc) ESn6D@"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p(~Y" H  
*/ yI3Q|731)  
public void sort(int[] data) { JL?Cnk$!  
int[] stack=new int[MAX_STACK_SIZE]; 45?*:)l:  
w'!ECm>*`  
int top=-1; &$<(D0  
int pivot; *Kp}B}}J  
int pivotIndex,l,r; KbXbT  
dFd lB `L  
stack[++top]=0; $*YC7f  
stack[++top]=data.length-1; u)tHOV>&  
8mk}nex  
while(top>0){ T"n>h  
int j=stack[top--]; TNyK@~#m  
int i=stack[top--]; oG+K '(BB  
AGl|>f)  
pivotIndex=(i+j)/2; zhuy ePn  
pivot=data[pivotIndex]; 67}]s@:l](  
C(EYM$  
SortUtil.swap(data,pivotIndex,j); }A^ 1q5  
7fap*  
file://partition c9\B[@-q  
l=i-1; Vxp$#3 ;S  
r=j; O|HIO&M  
do{ <sgZ3*,A  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \_lG#p|  
SortUtil.swap(data,l,r); |P^]@om  
} BjH~Ml2  
while(l SortUtil.swap(data,l,r); =Dh$yC-Zr  
SortUtil.swap(data,l,j); oP+kAV#]  
44'=;/  
if((l-i)>THRESHOLD){ n33JTqX  
stack[++top]=i; 1y},9ym  
stack[++top]=l-1; }l,T~Pjb  
} bc `UA  
if((j-l)>THRESHOLD){ T g3:VD  
stack[++top]=l+1; <I>%m,  
stack[++top]=j; =@Q#dDnFu%  
} ,AdusM  
/1IvLdPIu  
} 6.7`0v?,n  
file://new InsertSort().sort(data); &?KPu?9  
insertSort(data); 4C l, Iw/;  
} o}WB(WsG  
/** I(z>)S'7r  
* @param data 9=Y,["br$_  
*/ ^t\kLU  
private void insertSort(int[] data) { \?bwm&6+r  
int temp; [ED!J~lg8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WpXODkQL  
} 66I|0_  
} @/CRIei  
} C_;HaQiu  
<{$ ev&bQ  
} 2>!_B\%)H  
#g@  
归并排序: 4(` 2#  
9X 5*{f Y  
package org.rut.util.algorithm.support; a/`c ef  
j~+[uzW98  
import org.rut.util.algorithm.SortUtil; ?R|fS*e2EB  
)m|X;eEo  
/** *\=2KIF'  
* @author treeroot mtSNl|O&{  
* @since 2006-2-2 Y&?|k'7  
* @version 1.0 N,WI{*  
*/ D< nlb-  
public class MergeSort implements SortUtil.Sort{ DZHrR:q?e  
t` }20=I+  
/* (non-Javadoc) 9F2w.(m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c*y$bf<  
*/ LVPt*S=/  
public void sort(int[] data) { ke3HK9P;  
int[] temp=new int[data.length]; - XE79 fQ  
mergeSort(data,temp,0,data.length-1); /2g)Z!&+L  
} 1VhoJGH;C  
IUh5r(d 68  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^/`#9]<%  
int mid=(l+r)/2; Y0/jH2n  
if(l==r) return ; '_q: vjX  
mergeSort(data,temp,l,mid); _Vdb?  
mergeSort(data,temp,mid+1,r); @D.R0uM  
for(int i=l;i<=r;i++){ ?RgU6/2  
temp=data; s=H/b$v  
} F|]o9&/<]  
int i1=l; ATYQ6E[{MV  
int i2=mid+1; AIvL#12  
for(int cur=l;cur<=r;cur++){ F<PWBs%  
if(i1==mid+1) )'BJ4[aq\  
data[cur]=temp[i2++]; &[?u1qQ%o  
else if(i2>r) 7h9fQ&y  
data[cur]=temp[i1++]; v$gMLu=  
else if(temp[i1] data[cur]=temp[i1++]; c8k6(#\  
else &+E'1h10  
data[cur]=temp[i2++]; K#9(|2 J%  
} AmT| %j&3  
} Hj5WJ{p.  
4 |:Q1  
} Vu|Br  
-V;0_Nx7p  
改进后的归并排序: )8 "EI-/.  
68&6J's;  
package org.rut.util.algorithm.support; Pe+ 8~0o=R  
U/1[~429  
import org.rut.util.algorithm.SortUtil; mV:RmA  
Q|j@#@O1  
/** 2FZ 0c/[&  
* @author treeroot LyJTK1]#  
* @since 2006-2-2 a@5xz)  
* @version 1.0 8!o{W=m^4  
*/ , 6EZb[;g^  
public class ImprovedMergeSort implements SortUtil.Sort { ^*cMry  
3<zTkI  
private static final int THRESHOLD = 10; ? z)y%`}  
e' /  
/* Z30z<d,j  
* (non-Javadoc) _SBp66 r  
* H0D>A<Ue  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Sx<tj_4P{  
*/ a`EGx{q(  
public void sort(int[] data) { :|n>H+Y  
int[] temp=new int[data.length]; X%4uShM  
mergeSort(data,temp,0,data.length-1);  `5k6s,  
} o@<6TlZM  
'K;4102\  
private void mergeSort(int[] data, int[] temp, int l, int r) { wZ]BY;  
int i, j, k; .gM>FUH3L  
int mid = (l + r) / 2; e_>rJWI}  
if (l == r) o-Q]Dk1W  
return; lJ2|jFY9  
if ((mid - l) >= THRESHOLD) xu%! b0  
mergeSort(data, temp, l, mid); zulf%aaL  
else a O"nD_7  
insertSort(data, l, mid - l + 1); j$|Yd=  
if ((r - mid) > THRESHOLD) [5RFQ!  
mergeSort(data, temp, mid + 1, r); we:5gK &  
else ? !oVf>  
insertSort(data, mid + 1, r - mid); /+<%,c$n  
\4\\575zp'  
for (i = l; i <= mid; i++) { c5B_WqjJ  
temp = data; gq/ePSa  
} ,IT)zCpaBP  
for (j = 1; j <= r - mid; j++) { }> !"SU:d  
temp[r - j + 1] = data[j + mid]; 8aZey_Hw;+  
} r'9=k x  
int a = temp[l]; Y6;0khp  
int b = temp[r]; =XacG}_  
for (i = l, j = r, k = l; k <= r; k++) { ~x0-iBF  
if (a < b) { U>L=.\\|  
data[k] = temp[i++]; Zeme`/aBb  
a = temp; PBAz` y2  
} else { YL9t3 ]  
data[k] = temp[j--]; Lilk8|?#W  
b = temp[j]; 282+1X  
} +QXYU8bYZ  
} uwH)/BW)[  
} EMW4<na[  
9p[W :)P4d  
/** 7uv/@(J"$  
* @param data 8JtI&aH-L  
* @param l Z0F>"Z _qn  
* @param i TN |{P  
*/ l|ZzG4]+l  
private void insertSort(int[] data, int start, int len) { 9?}rpA`P  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); '.h/Y/oz  
} 5QL9 w3L  
} -aH?7HV}  
} XY+aunLf  
} G"U>fwFuK  
2W"cTm  
堆排序: AG$-U2ap  
a_pCjG89  
package org.rut.util.algorithm.support; llZ"uTK\M  
;8;~C "  
import org.rut.util.algorithm.SortUtil; tRUsZl  
6t7;}t]t  
/** >+; b>  
* @author treeroot 4M0v1`k  
* @since 2006-2-2 ZB^4(F')H  
* @version 1.0 :E >n)_^  
*/ vY0V{u?J  
public class HeapSort implements SortUtil.Sort{ LG&Q>pt.  
'#4mDz~  
/* (non-Javadoc) QzFv;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &Xl_sDvt  
*/ z[lRb]:i[  
public void sort(int[] data) { m|ERf2-  
MaxHeap h=new MaxHeap(); soqNzdTB2  
h.init(data); Y8`))MeD  
for(int i=0;i h.remove(); ZTBFV/{  
System.arraycopy(h.queue,1,data,0,data.length); Za:BJ:  
} 4na4Jsq{  
#o"HD6e  
private static class MaxHeap{ vZ nO  
L1Cn  
void init(int[] data){ +{Jf]"KD  
this.queue=new int[data.length+1]; tls6rto  
for(int i=0;i queue[++size]=data; 0ZID @^  
fixUp(size); bZOy~F|  
} l>5]Wd{/  
} h-_0 A]  
[q>i  
private int size=0; 2$i 0yPv  
l LD)i J1  
private int[] queue; 0p>:rU~  
6B;_uIq5  
public int get() { P=sK+}5`q  
return queue[1]; PM@s}(  
} VrGb;L'[  
%`\3V {2*  
public void remove() { /"%IhX-  
SortUtil.swap(queue,1,size--); Lx:9@3'7'  
fixDown(1); w7t"&=pF7  
} A6x_!  
file://fixdown R:IS4AaS  
private void fixDown(int k) { |v %RjN  
int j; l3pW{p  
while ((j = k << 1) <= size) { 9y|&T  
if (j < size %26amp;%26amp; queue[j] j++;  0[!gk]p  
if (queue[k]>queue[j]) file://不用交换 lRATrp#T  
break; ^SSOh#  
SortUtil.swap(queue,j,k); k89gJ5B$  
k = j; (+Kof  
} hq8/`u YF  
} zUUxxS_?  
private void fixUp(int k) { _~S^#ut+  
while (k > 1) { W Pp\sIP  
int j = k >> 1; zRJKIm  
if (queue[j]>queue[k]) O->(9k<  
break; 'ZZ WH  
SortUtil.swap(queue,j,k); ??%T  
k = j; b5 C}K  
} v"('_!  
} q;a*gqt   
yE|} r  
} z.9FDQLp  
) Q  
} m2< *  
soVZz3F  
SortUtil: Hv7D+ j8M  
}Keon.N?   
package org.rut.util.algorithm; >RqT7n8h  
y:[VRLo  
import org.rut.util.algorithm.support.BubbleSort; I^\bS  
import org.rut.util.algorithm.support.HeapSort; bb :|1D  
import org.rut.util.algorithm.support.ImprovedMergeSort; m6Cd^'J9^  
import org.rut.util.algorithm.support.ImprovedQuickSort; E~@HC5.M  
import org.rut.util.algorithm.support.InsertSort; l0_E9qh-i  
import org.rut.util.algorithm.support.MergeSort; [U7,\o4w  
import org.rut.util.algorithm.support.QuickSort; OTHd1PSOu  
import org.rut.util.algorithm.support.SelectionSort; ^xNe Eb  
import org.rut.util.algorithm.support.ShellSort; A&lgiR*ObT  
,N|R/Vk$+E  
/** 9oxf)pjw  
* @author treeroot [qD<U%Hi  
* @since 2006-2-2 "T1#*"{j  
* @version 1.0 H- qP>:  
*/ E29gnYxu8  
public class SortUtil {  H[!Q  
public final static int INSERT = 1; f, j(uP  
public final static int BUBBLE = 2; u-M$45vct  
public final static int SELECTION = 3; )E~\H+FP6  
public final static int SHELL = 4; ;3?J#e6;  
public final static int QUICK = 5; "JLhOTPaHf  
public final static int IMPROVED_QUICK = 6; |VR5Q(d  
public final static int MERGE = 7; E?h2e~ ,]  
public final static int IMPROVED_MERGE = 8; GGQ(|?w  
public final static int HEAP = 9; =^AZx)Kwd  
+?txGHQq  
public static void sort(int[] data) { C\ >Mt  
sort(data, IMPROVED_QUICK); 3k[<4-  
} -5_xI)i  
private static String[] name={ TN@JPoH  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" +-YuBVHL  
}; T&MS_E&;  
M*@ aA XM  
private static Sort[] impl=new Sort[]{ QDT{Xg* I  
new InsertSort(), T2_#[bk*d  
new BubbleSort(), c^)E:J/  
new SelectionSort(), qkG;YGio  
new ShellSort(), /?-p^6U  
new QuickSort(), `k%#0E*H  
new ImprovedQuickSort(), `iayh  
new MergeSort(), wOkJ:k   
new ImprovedMergeSort(), l=?y=2+  
new HeapSort() =2)$|KC  
}; /(pD^D  
IoHkcP[H  
public static String toString(int algorithm){ rxI&;F#  
return name[algorithm-1]; :w_1J'D}  
} (?3 \.tQ}}  
! E#.WX  
public static void sort(int[] data, int algorithm) { B|$13dHfa  
impl[algorithm-1].sort(data); aKzD63  
} ~Q 9)Q  
A*U'SCg(G  
public static interface Sort { +|)#yE$aMh  
public void sort(int[] data); k:@Ls  
} m+^;\DFJ,  
3[i !2iL.  
public static void swap(int[] data, int i, int j) { G$`4.,g  
int temp = data; q]%bd[zkz  
data = data[j]; Fsj&/: q  
data[j] = temp; vA-p} ]%  
} .%b_3s".  
} ^JVP2L>o*  
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