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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。 zD-.bHo>.  
插入排序: =g$%.  
RpR;1ktF>  
package org.rut.util.algorithm.support; QkwBw^'_5  
7\K=8G  
import org.rut.util.algorithm.SortUtil; =ex71qj)  
/** 4l E j/#}  
* @author treeroot /e6\F7  
* @since 2006-2-2 O[;>Y'zqC%  
* @version 1.0 uJm9h(xq  
*/ .T/\5_Bx  
public class InsertSort implements SortUtil.Sort{ vVmoV0kGt  
+hRAU@RA  
/* (non-Javadoc) j}'spKxu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5EIh5Y EU>  
*/ ^c!"*L0E  
public void sort(int[] data) { (5re'Pl  
int temp; &hEtVkK  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7g cr$&+e  
} JV Fn=Mw  
} _1 f!9ghT\  
} \SS1-UbL  
<|~X,g;f  
} <l(LQmM;  
)}1 J.>5  
冒泡排序: r%JJ5Al.S  
hdp;/Qz&  
package org.rut.util.algorithm.support; S.aSNH<  
3@*J=LGhKc  
import org.rut.util.algorithm.SortUtil; ^i2W=A'P  
tpO%)*  
/** x-+Hy\^@|  
* @author treeroot %%}U -*b  
* @since 2006-2-2 %vDN{%h8  
* @version 1.0 aRdzXq#x  
*/ |vw0:\/ H  
public class BubbleSort implements SortUtil.Sort{ Dx/BxqG6}_  
(\>3FwFHW|  
/* (non-Javadoc) (V)nHF*<>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /\hybx'  
*/ r*fZS$e  
public void sort(int[] data) { Q}2aBU.f  
int temp; [nB[]j<R*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ K>Dn#"{Y  
if(data[j] SortUtil.swap(data,j,j-1); 9o"k 7$  
} $a>,sL&;  
} +*]"Yo~]}  
} D.9qxM"Z>  
} W~z 2Q so  
+hI:5(_  
} Va"Q1 *"  
fgK1+sW  
选择排序: Pk!RgoWF  
Eq=~SO%  
package org.rut.util.algorithm.support; GSIRZJl  
oW3j|V  
import org.rut.util.algorithm.SortUtil; I{U7BZy  
gE]6]L  
/** D]\of#%T  
* @author treeroot V}o`9R@tx}  
* @since 2006-2-2 V6P2W0 m  
* @version 1.0 _o/LFLq  
*/ Gjf b<  
public class SelectionSort implements SortUtil.Sort { =VFi}C/  
S<H 2e{~  
/* ^pruQp1X  
* (non-Javadoc) jT>G8}h  
* byoP1F%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v% 6uU  
*/ 3DRJl, v  
public void sort(int[] data) { AI0YK"c?  
int temp; 5gYv CW&~  
for (int i = 0; i < data.length; i++) { hkB/ OJ  
int lowIndex = i; $5N%!  
for (int j = data.length - 1; j > i; j--) { ],#Xa.r  
if (data[j] < data[lowIndex]) { Y S/x;  
lowIndex = j; jD1/`g%  
} ;c p*]  
} 'c7C*6;a  
SortUtil.swap(data,i,lowIndex); /k8Lu+OJ  
} .}!"J`{ W  
} Z" j #kaXA  
p5`iq~e9  
} LK\L}<;1V  
yuIy?K  
Shell排序: Cw6\'p%l-\  
0M=A,`qk  
package org.rut.util.algorithm.support; (iQ< [3C=  
0z&]imU  
import org.rut.util.algorithm.SortUtil; vZMb/}-o  
1T&NU  
/** )` ~"o*M  
* @author treeroot Y;2WY 0eq  
* @since 2006-2-2 $eHYy,,  
* @version 1.0 }C-K0ba7  
*/ .n$c+{  
public class ShellSort implements SortUtil.Sort{ 4Z8FLA+T,  
<O:}dXqZ  
/* (non-Javadoc) : EA-L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <@:RS$" i  
*/ j.=&qYc0"  
public void sort(int[] data) { h</,p49gM  
for(int i=data.length/2;i>2;i/=2){ ]R%[cr  
for(int j=0;j insertSort(data,j,i); s0r::yO  
} c8z6-6`i0  
} \Lu aI  
insertSort(data,0,1); 4eVQO%&2  
} [B~*88T  
de7 \~$  
/** +4L]Z ;k  
* @param data #aI(fQZe  
* @param j rhff8C//'  
* @param i 1 S<E=7  
*/ 5@QJ+@j|  
private void insertSort(int[] data, int start, int inc) { F*u"LTH  
int temp; p^.qwP\P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); we:P_\6  
} L%S(z)xX3  
} -gn!8G1  
} -S\gDB bb  
HxUJ 0Q  
} ,9,cN-/a  
P^(uS'j)+  
快速排序: \_io:{M  
^VI\:<\{  
package org.rut.util.algorithm.support; g'X{  
88x2Hf5I  
import org.rut.util.algorithm.SortUtil; "L4ZE4|)  
%CoO-1@C  
/** )FQxVT,.  
* @author treeroot c r,fyAvX  
* @since 2006-2-2 Qg6tJB   
* @version 1.0 %-?k [DL6  
*/ #W$6[#7=I  
public class QuickSort implements SortUtil.Sort{ d+45Y,|  
,#Pp_f<  
/* (non-Javadoc) )7c/i+FsC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2CMWJi  
*/ c1tM(]&  
public void sort(int[] data) { >o:y.2yCe  
quickSort(data,0,data.length-1); KWS\iu  
} (usFT_  
private void quickSort(int[] data,int i,int j){ Y{KN:|i.!  
int pivotIndex=(i+j)/2; v[~~q  
file://swap /07iQcT(  
SortUtil.swap(data,pivotIndex,j); mX2X.ww(4  
jXPf}{^  
int k=partition(data,i-1,j,data[j]); -,186ZVZ  
SortUtil.swap(data,k,j); 4 :phq  
if((k-i)>1) quickSort(data,i,k-1); -M6#,Ji  
if((j-k)>1) quickSort(data,k+1,j); /+wCx#!  
73j\!x  
} }!uwWBw`  
/** Gq=tR`.  
* @param data !L[$t~z  
* @param i 8B?*?,n5  
* @param j cb=ixn  
* @return fJ  GwT  
*/ &>n:7  
private int partition(int[] data, int l, int r,int pivot) { ffW-R)U|3  
do{ l&|Tb8_'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); bg\9Lbjr  
SortUtil.swap(data,l,r); G#L6;  
} 63`5A3rii  
while(l SortUtil.swap(data,l,r); `#*`hH8  
return l; "M;[c9  
} &t U&ZH  
{3T&6LA  
} z? Iu;X  
s .@Szq  
改进后的快速排序: qXprD.; }  
qP[_!C.  
package org.rut.util.algorithm.support; I)\{?LdHR  
nP&6i5s%  
import org.rut.util.algorithm.SortUtil; xsIfR3Ze9  
}0Q T5   
/** %H[~V f?d  
* @author treeroot Alv"D  
* @since 2006-2-2 c!kzwc(  
* @version 1.0 %x./>-[t  
*/ +TW,!.NBG  
public class ImprovedQuickSort implements SortUtil.Sort { tUksIUYD\  
Cp?6vu|RA  
private static int MAX_STACK_SIZE=4096; "#:h#uRUb  
private static int THRESHOLD=10; \WqC^Di  
/* (non-Javadoc) x"7PnN|~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B?db`/G9  
*/ n5 <B*  
public void sort(int[] data) { $azK M,<q  
int[] stack=new int[MAX_STACK_SIZE]; _1jbNQa  
aI>F8R?  
int top=-1; %+((F +[  
int pivot; 2K^xN]]rG  
int pivotIndex,l,r; B qo#cnlG  
G%junS'zt  
stack[++top]=0; usNq]  
stack[++top]=data.length-1; ec,Bu7'8  
\=[38?QOY  
while(top>0){ _H@8qR  
int j=stack[top--]; (QdLz5\  
int i=stack[top--]; [s[!PlazX  
)xL_jSyh  
pivotIndex=(i+j)/2; cm8co  
pivot=data[pivotIndex]; g,G{%dGsk  
| 2GrOM&S  
SortUtil.swap(data,pivotIndex,j); ewdcAF5  
hh$i1n  
file://partition 4}Y? :R  
l=i-1; ?Ld:HE  
r=j; sDvy(5  
do{ cJ>^@pd{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sC ?e%B  
SortUtil.swap(data,l,r); r3Kx  
} /g1;`F(MS/  
while(l SortUtil.swap(data,l,r); ~<}?pDA}~  
SortUtil.swap(data,l,j); o{' J O3  
i)/#u+Y1P  
if((l-i)>THRESHOLD){ (S?qxW?  
stack[++top]=i; M<x><U#]A  
stack[++top]=l-1; t]{, 7.S  
} |RBL5,t^  
if((j-l)>THRESHOLD){ a# Uk:O!  
stack[++top]=l+1; C,8@V`  
stack[++top]=j; g2vt(Gf;  
} F ~e}=Nb  
*l@T 9L[M'  
} Odm1;\=Eg+  
file://new InsertSort().sort(data); @.=2*e.z|b  
insertSort(data); VrKLEN\  
} MH]?:]K9V  
/** "HLh3L~  
* @param data 5>:p'zI  
*/ Va4AE)[/*  
private void insertSort(int[] data) { KkJE-k*D+w  
int temp; Oiw!d6"Ovq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V0bKtg1f?-  
} ]E*xn  
} 6J965eM'[  
} &m`@6\N(  
<899r \  
} X;{U?`b-  
;T<'GP'/r  
归并排序: Wt=%.Y( x  
SwO8d;e  
package org.rut.util.algorithm.support; J=H8^4M  
EkOn Rm_hn  
import org.rut.util.algorithm.SortUtil; dCWq~[[  
T2to!*T  
/** _AiGD  
* @author treeroot >?{> !#1  
* @since 2006-2-2 orEb+  
* @version 1.0 pW&8 =Ew  
*/ vX*kvEG  
public class MergeSort implements SortUtil.Sort{ j[=P3Z0q  
']sIU;h3  
/* (non-Javadoc) ZV!*ZpTe~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9x14I2  
*/ #b1/2=PA  
public void sort(int[] data) { ai)?RF  
int[] temp=new int[data.length]; lC^?Jk[N  
mergeSort(data,temp,0,data.length-1); `J}FSUn\  
} (DM8PtZg  
d 8z9_C-  
private void mergeSort(int[] data,int[] temp,int l,int r){  P!/:yWd  
int mid=(l+r)/2; =/N0^  
if(l==r) return ; UvGX+M,z'  
mergeSort(data,temp,l,mid); CasFj9,  
mergeSort(data,temp,mid+1,r); ,*wj~NE  
for(int i=l;i<=r;i++){ jG^OF5.  
temp=data; VjSA& R  
} s3)T}52  
int i1=l; >kV=h?]Y  
int i2=mid+1; HmpV; <t3  
for(int cur=l;cur<=r;cur++){ (Jy > ,~O  
if(i1==mid+1) *%dWNvN4X  
data[cur]=temp[i2++]; !M k]%  
else if(i2>r) Z?'?+48xv4  
data[cur]=temp[i1++]; l 4cTN @E  
else if(temp[i1] data[cur]=temp[i1++]; 6 wD  
else -:V2Dsr6;  
data[cur]=temp[i2++]; f q*V76F  
} 'L6+B1Op  
} PLWx'N-kqL  
&&n-$WEl  
} j2:A@ a6  
i^/D_L.  
改进后的归并排序: .Tc?9X~4  
}}v28"\TA  
package org.rut.util.algorithm.support; i'0ol^~y6  
j"<F?k@`Q  
import org.rut.util.algorithm.SortUtil; [u8JqX  
YfH+kDT  
/** j`"cU$NRM  
* @author treeroot oz?6$oE(bt  
* @since 2006-2-2 ;Z#DB$o\  
* @version 1.0 cK2Us+h  
*/ S]DYEL$  
public class ImprovedMergeSort implements SortUtil.Sort { g8;JpPw  
SZC1$..2T  
private static final int THRESHOLD = 10; 5,?Au  
t-w4rXvF   
/* sKOy6v  
* (non-Javadoc) 0bG2YMs  
* PciiDh~/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ON$-g_s>)  
*/ tJ9`Ys  
public void sort(int[] data) { O0> ^?dsL  
int[] temp=new int[data.length]; 2<+9lk  
mergeSort(data,temp,0,data.length-1); 2a:JtJLl  
} CFx$r_!~  
Og<UW^VR  
private void mergeSort(int[] data, int[] temp, int l, int r) { YS&Q4nv-  
int i, j, k; ^1+&)6s7V  
int mid = (l + r) / 2; \YsYOFc|  
if (l == r) 9@z"~H  
return; TWJ%? /d  
if ((mid - l) >= THRESHOLD) ?1MaA  
mergeSort(data, temp, l, mid); v]BMET[w  
else )Waz bT@  
insertSort(data, l, mid - l + 1); XDq*nA8#5B  
if ((r - mid) > THRESHOLD) l050n9#9p  
mergeSort(data, temp, mid + 1, r); $Z^HI  
else . vQCX1V(  
insertSort(data, mid + 1, r - mid); j*N:Kdzvl  
JIU=^6^2'  
for (i = l; i <= mid; i++) { R>. %0%iq  
temp = data; `}f wR  
} <f`G@  
for (j = 1; j <= r - mid; j++) { a;e~D 9%1  
temp[r - j + 1] = data[j + mid]; [0mg\n?  
} Mi_/ ^  
int a = temp[l]; \py \rI  
int b = temp[r]; fP:g}Z  
for (i = l, j = r, k = l; k <= r; k++) { ) %&~CW+  
if (a < b) { xA2 "i2k9  
data[k] = temp[i++]; ,_2ZKO/k$  
a = temp; :*/`"M)'  
} else { Ta3qEVs  
data[k] = temp[j--]; 7{e*isV  
b = temp[j]; @s;qmBX4  
} Q'S"$^~{  
} k\a&4v  
} JA~v:ec  
k),.  
/** J-g<-!>RM  
* @param data myeez+@ m  
* @param l BSB;0OM  
* @param i +1%7*2q,  
*/ ^5 sO;vf  
private void insertSort(int[] data, int start, int len) { 8/dx)*JCq  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); u:f.g?!`"  
} 5L4{8X0X8  
} 3KW4 ]qo~  
} gK8{=A0c  
} Vyqj)1Z8>  
P6ztP$M(  
堆排序: :v!e8kM\x  
9I;d>%  
package org.rut.util.algorithm.support; ]hL `HP  
t$lO~~atr  
import org.rut.util.algorithm.SortUtil; ~SRK}5E  
Y[ciT)  
/** $Dm2>:Dmt  
* @author treeroot 'dstAlt?  
* @since 2006-2-2 '-7rHx  
* @version 1.0 Ej]:j8^W  
*/ "ebm3t@C  
public class HeapSort implements SortUtil.Sort{ S3iXG @  
~S,R`wo  
/* (non-Javadoc) kgV_*0^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eJ JD'Z  
*/ rv\m0*\<  
public void sort(int[] data) { N1 }#6YNw  
MaxHeap h=new MaxHeap(); K*_5M  
h.init(data); m ["`Op4  
for(int i=0;i h.remove(); V_T.#"C4=z  
System.arraycopy(h.queue,1,data,0,data.length); n@)Kf A)&  
} zMf .  
^"e|)4_5\  
private static class MaxHeap{ Is $I;`  
^T#bla893  
void init(int[] data){ #ONad0T;  
this.queue=new int[data.length+1]; |ZAR!u&0  
for(int i=0;i queue[++size]=data; 5DEK`#*  
fixUp(size); 0 xUw}T6  
} O#g'4 S  
} }j/($,  
#MyR:V*a  
private int size=0; ,u1Yn}  
W/3,vf1  
private int[] queue; 7 )`U%}R  
ke sg]K  
public int get() { :QGd/JX$n`  
return queue[1]; 2|KgRk|!  
} s^{hdCCl67  
[!ghI%VK  
public void remove() { PE~umY]  
SortUtil.swap(queue,1,size--); _qq> 43  
fixDown(1); CHeU?NtFps  
} Stkyz:,(  
file://fixdown Ca&5"aki  
private void fixDown(int k) { 0Y_?r$M  
int j;  {hzU  
while ((j = k << 1) <= size) { (|<e4HfZL  
if (j < size %26amp;%26amp; queue[j] j++; <,r|*pkhp~  
if (queue[k]>queue[j]) file://不用交换 %MQU&H9[  
break; &o$z[ b  
SortUtil.swap(queue,j,k); gkJL=,  
k = j; \pXs&}%1,F  
} SM;*vkwz~  
} i: 6`Rmz1.  
private void fixUp(int k) { $?.0>0 ,<  
while (k > 1) { )AxgKBW  
int j = k >> 1; F%t_9S,)O  
if (queue[j]>queue[k]) ADTx _tE  
break; 7hs1S|  
SortUtil.swap(queue,j,k); J|9kWjOf+i  
k = j; Uq:WW1=kh  
} G% |$3  
} eDh]uKg  
IMKyFp]h-  
} J4yL"iMt  
Ry@QJn I<  
} UE-<  
kK27hfsw  
SortUtil: dr|>P*  
B}PT-S1l  
package org.rut.util.algorithm; "$->nC.  
3D"2yTM(  
import org.rut.util.algorithm.support.BubbleSort; RObo4  
import org.rut.util.algorithm.support.HeapSort; e;+6U"Jx*  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4GA9oLl  
import org.rut.util.algorithm.support.ImprovedQuickSort; Wchu-]  
import org.rut.util.algorithm.support.InsertSort; toq/G,N Q  
import org.rut.util.algorithm.support.MergeSort; @H{QHi  
import org.rut.util.algorithm.support.QuickSort; B-oQ 9[~  
import org.rut.util.algorithm.support.SelectionSort; rd*`8B  
import org.rut.util.algorithm.support.ShellSort; 8T7ex(w  
)w?DB@Tx  
/** L}E~CiL0n  
* @author treeroot 2 L>;M  
* @since 2006-2-2 WR&>AOWAD  
* @version 1.0 F/ZB%;O9  
*/ _JVFn=  
public class SortUtil { }?K vT$s  
public final static int INSERT = 1; "!ZQ`yl  
public final static int BUBBLE = 2; HHT_}_?  
public final static int SELECTION = 3; R&>G6jZ?8  
public final static int SHELL = 4; <G9HVMiP  
public final static int QUICK = 5; .!fhy[%o:D  
public final static int IMPROVED_QUICK = 6; :y/1Jf'2f  
public final static int MERGE = 7; 03ol6y )C  
public final static int IMPROVED_MERGE = 8; WpPm|h  
public final static int HEAP = 9; 4LEWOWF}  
r8.`W\SKX  
public static void sort(int[] data) { ($Cy-p  
sort(data, IMPROVED_QUICK); #%4XZ3j#j;  
} "!V-@F$@N  
private static String[] name={ R`[jkJrc  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ''bh{ .x  
}; DFgQ1:6[  
?Uq;>  
private static Sort[] impl=new Sort[]{ -YDA,.Ic?  
new InsertSort(), 0}'xoYv f  
new BubbleSort(), XniPNU  
new SelectionSort(), !"v[\||1  
new ShellSort(),  Re=()M  
new QuickSort(), 9J3@8h p  
new ImprovedQuickSort(), 4YuJ-  
new MergeSort(), %^ bHQB%  
new ImprovedMergeSort(), 'YKzs;y$  
new HeapSort() )x!b{5'"7  
}; Xkqq$A4  
Uuxx^>"h\  
public static String toString(int algorithm){ PBeBI:  
return name[algorithm-1]; Su]@~^w  
} sf([8YUd  
#r=Jc8J_  
public static void sort(int[] data, int algorithm) { i\zVP.c])*  
impl[algorithm-1].sort(data); x0KW\<k  
} </hv{<  
IP LKOT~  
public static interface Sort { syJLcK+e  
public void sort(int[] data); ?*)Q[P5  
} $ Jz(Lb{  
]C;X/8'Jf5  
public static void swap(int[] data, int i, int j) { x%v[(*F#y  
int temp = data; e3 #0r  
data = data[j]; %ER"Udh  
data[j] = temp; a2!U9->!  
} z4qc)- {L  
} URd0|?t9^L  
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