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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。 $ItjVc@U  
插入排序: SXm%X(JU  
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package org.rut.util.algorithm.support; 4\Y5RfLB_  
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import org.rut.util.algorithm.SortUtil; GT&}Burl/n  
/** 4 V')FGB$  
* @author treeroot `.W2t5 Y  
* @since 2006-2-2 tbd=A]B-  
* @version 1.0 :eVZ5?F  
*/ t~->&Ja   
public class InsertSort implements SortUtil.Sort{ -Lh7!d  
TJO$r6&  
/* (non-Javadoc) TmQIpeych  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "tzu.V-  
*/ VI&x1C  
public void sort(int[] data) { _5jT}I<k  
int temp; ?dgyi4J?=`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,twx4r^  
} (j&:  
} KhHFJo[8sf  
}   EO&Q  
iAwEnQ3h  
} $v|W2k  
mH'~pR>t  
冒泡排序: >.iF,[.[F<  
t<!;shH,s  
package org.rut.util.algorithm.support; L (Y1ey9x  
"jFf}"  
import org.rut.util.algorithm.SortUtil; sS>b}u+v#!  
1UP=(8j/  
/** k {*QU(  
* @author treeroot E7:xPNU  
* @since 2006-2-2 c{1;x)L  
* @version 1.0 ]:|B).  
*/ 6p9fq3~7Y  
public class BubbleSort implements SortUtil.Sort{ zw/AZLS  
?h= n5}Y  
/* (non-Javadoc) C$OVN$lL`8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6>a6;[  
*/ h: ' |)O  
public void sort(int[] data) { @r TB&>`  
int temp; 8QrpNSj4  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y2u\~.;oq  
if(data[j] SortUtil.swap(data,j,j-1); G,u=ngZ]  
} )U@9dV7u  
} va6Fp2n<1*  
} \Z[1m[{  
} ~KBa-i%o  
j9p6 rD  
} IOy0WHl|  
`2mddx8  
选择排序: L:$4o  
tn]nl!_@  
package org.rut.util.algorithm.support; i\i%Wi Rl  
ar 3L|MN  
import org.rut.util.algorithm.SortUtil; T ozx0??)  
p5G'})x  
/** !}(B=-  
* @author treeroot 8dGsV5"*  
* @since 2006-2-2 &."$kfA+  
* @version 1.0 8<=^Rkz  
*/ *WwM"NFHDd  
public class SelectionSort implements SortUtil.Sort { Npp YUY  
}Q\%tZC#T  
/* tW\yt~q,  
* (non-Javadoc) pRd.KY -<  
* cS ~OxAS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F-_u/C]  
*/ 1Cr&6't  
public void sort(int[] data) { V ao:9 ~  
int temp; W__ArV2Z_  
for (int i = 0; i < data.length; i++) { st-{xC#N#  
int lowIndex = i; L)e" qC_-  
for (int j = data.length - 1; j > i; j--) { M5dYcCDE  
if (data[j] < data[lowIndex]) { u#0snw~)/  
lowIndex = j; nV' 1 $L#  
} ]PXM;w  
} Pvxb6\G&d  
SortUtil.swap(data,i,lowIndex); h0{X$&:  
} g`XngRb|j  
} Hfcpqa  
RRL{a6(?  
} iC"iR\Qu  
z0z@LA4k6@  
Shell排序: ~6G `k^!  
eg0_ <  
package org.rut.util.algorithm.support; Q:}]-lJg  
70'OS:J=\  
import org.rut.util.algorithm.SortUtil; *uvM6F$ut  
>3 o4 U2  
/** ACszx\[K3  
* @author treeroot 6u[fCGi%  
* @since 2006-2-2 J9^NHU  
* @version 1.0 ;%tFi  
*/ #:K=zV\  
public class ShellSort implements SortUtil.Sort{ =[B\50]  
m,.Y:2?*V  
/* (non-Javadoc) 0At0`Q#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2+1ybOwb  
*/ '&IGdB I  
public void sort(int[] data) { KC/O EJ`  
for(int i=data.length/2;i>2;i/=2){ 9LR=>@Z  
for(int j=0;j insertSort(data,j,i); [doEArwn  
} TnrBHaxbo4  
} .-gJS-.c  
insertSort(data,0,1); O?uICnmi6  
} ,i>`Urd  
Xw H>F7HPe  
/** q lc@$  
* @param data S?~0)EXj(  
* @param j Q,U0xGGz  
* @param i 5.rAxdP  
*/ .9~j%] q  
private void insertSort(int[] data, int start, int inc) { {j2V k)\[i  
int temp; <WXVUEea  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); I8xdE(o8+  
} 'l*X?ccKy  
} ww2mL <B  
} f%G\'q]#F  
HNzxF nh  
} U>S  
fO<40!%9cQ  
快速排序: qO6M5g:   
05d0p|},  
package org.rut.util.algorithm.support; 0 R6:3fV6R  
^rWg:fb  
import org.rut.util.algorithm.SortUtil; yRXML\Ge  
R)NSJ-A!2  
/** kx,.)qKk  
* @author treeroot VD=H=Ju  
* @since 2006-2-2 g'.OzD  
* @version 1.0 `/O`%6,f1!  
*/ yl[I'fX66  
public class QuickSort implements SortUtil.Sort{ fU>l:BzJ K  
q/O2E<=w*c  
/* (non-Javadoc) aOD h5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o1AbB?%=  
*/ [ZWAXl $  
public void sort(int[] data) { X^\D"fmE.  
quickSort(data,0,data.length-1); xf,[F8 2y  
} t2[/eM.G  
private void quickSort(int[] data,int i,int j){ b\P:a_vq  
int pivotIndex=(i+j)/2; =%<=Bn  
file://swap 5B=uvp|Y  
SortUtil.swap(data,pivotIndex,j); OBi(]l}^O  
wQ33Gc  
int k=partition(data,i-1,j,data[j]); f-%M~:  
SortUtil.swap(data,k,j); RpJ7.  
if((k-i)>1) quickSort(data,i,k-1); @KQ>DBWQM  
if((j-k)>1) quickSort(data,k+1,j); nPyn~3  
~P3b5 -  
} Qs1p  
/** J[ZHAnmPH  
* @param data $d<NN2  
* @param i :>FN|fz  
* @param j yqN`R\d  
* @return 8~Cmn%  
*/ K_YrdA)6  
private int partition(int[] data, int l, int r,int pivot) { [)"\Aq  
do{ NLy4Z:&{  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g89@>?Mn  
SortUtil.swap(data,l,r); w6BBu0,KC  
}  2%@tnk|@  
while(l SortUtil.swap(data,l,r); Kd:l8%+  
return l; wgFX')l:  
} Oiib2Ov  
DTO_IP  
} lHM+<Z  
Fb{N>*l.  
改进后的快速排序: +>PsQ^^x  
$@PruY3[  
package org.rut.util.algorithm.support; m.D8@[y  
lOm01&^"E  
import org.rut.util.algorithm.SortUtil; 6 byeO&d  
 ZiPeP  
/** ^yW['H6V  
* @author treeroot 5]&sXs  
* @since 2006-2-2 Mt.Cj;h@^[  
* @version 1.0 +La2-I  
*/ G_+/ e]P  
public class ImprovedQuickSort implements SortUtil.Sort { o;@~uU  
i^DMnvV.  
private static int MAX_STACK_SIZE=4096; T=PqA)Ym  
private static int THRESHOLD=10; 7r;1 6"  
/* (non-Javadoc) 'KH+e#?Ar  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (WHg B0{  
*/ 9~hW8{#  
public void sort(int[] data) { q/@2=$]hH3  
int[] stack=new int[MAX_STACK_SIZE]; ?^U?ua6  
LK}g<!o(  
int top=-1; qSP &Fi  
int pivot; F0!Z1S0g  
int pivotIndex,l,r; I8XP`Ccq  
S<7!<]F-  
stack[++top]=0; -))S  
stack[++top]=data.length-1; o< @![P  
G2|jS@L#  
while(top>0){ !h #ZbErW  
int j=stack[top--]; ,8r?C!m]  
int i=stack[top--]; ,lH }Ba02F  
GL?b!4xx  
pivotIndex=(i+j)/2; e|oMbTZ5m  
pivot=data[pivotIndex]; X):7#x@uy  
M P8Sd1_=  
SortUtil.swap(data,pivotIndex,j); xf&[QG+Ef  
lJ;Wi  
file://partition 'LMj.#A<g  
l=i-1; b? o  
r=j; x=cucZ  
do{ $wAR cS  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [mzed{p]]  
SortUtil.swap(data,l,r); Xf4~e(O  
} y"yo\IDW  
while(l SortUtil.swap(data,l,r); JOuyEPy  
SortUtil.swap(data,l,j); +ydd"`  
5, $6mU#=  
if((l-i)>THRESHOLD){ U;W9`JT<.f  
stack[++top]=i; OjhX:{"59  
stack[++top]=l-1; Po58@g  
} l:'#pZ4T  
if((j-l)>THRESHOLD){ :.5l  
stack[++top]=l+1; m%6VwV7U  
stack[++top]=j; %M`48TW)  
} <<!fA ><W  
 2yJ{B   
} IW~wO  
file://new InsertSort().sort(data); S L 5k^|  
insertSort(data); qHZDo[  
} O[VY|.MEk  
/** Tc(=J7*r&  
* @param data (T*$4KGV  
*/ &IN%2c  
private void insertSort(int[] data) { |'z8>1  
int temp; }`gOfj)?i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +51heuu[o  
} 9nN1f@Y  
} F6}RPk\=i  
} _Gq6xv\b1  
$.vm n,:.  
} ['o ueOg  
vS\2zwb}  
归并排序: 8GP17j  
o,WjM[e  
package org.rut.util.algorithm.support; G$f%]A1  
0o+Yjg>\~8  
import org.rut.util.algorithm.SortUtil; f(pq`v^-n  
3`cA!ZVQ  
/** At\(/Z y  
* @author treeroot Dsm1@/"i|7  
* @since 2006-2-2 ?)1Y|W'Rv  
* @version 1.0 jae9!W i  
*/ 5csh8i'V  
public class MergeSort implements SortUtil.Sort{ 44} 5o  
(|BY<Ac3  
/* (non-Javadoc) Wu{=QjgY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T`!R ki%~  
*/ U|3!ixk>>w  
public void sort(int[] data) { *U^Y@""a  
int[] temp=new int[data.length]; QP%_2m>yhl  
mergeSort(data,temp,0,data.length-1); bq E'9GI  
} ;Xt <\^e  
L"&T3i  
private void mergeSort(int[] data,int[] temp,int l,int r){ e>z"{ u(F0  
int mid=(l+r)/2; rk8pL[|  
if(l==r) return ; Dylm=ZZa  
mergeSort(data,temp,l,mid); Q7uJ9Y{X  
mergeSort(data,temp,mid+1,r); w6s[|i)&  
for(int i=l;i<=r;i++){ uHI(-!O  
temp=data; w1G(s$;C  
} dQ8RrD=$&  
int i1=l; |4mvB2r  
int i2=mid+1; fLe~X!#HF  
for(int cur=l;cur<=r;cur++){ vntJe^IaFd  
if(i1==mid+1) \!\:p/f  
data[cur]=temp[i2++]; J|BElBY  
else if(i2>r) zhw*Bed<  
data[cur]=temp[i1++]; ~Y/A]N86,  
else if(temp[i1] data[cur]=temp[i1++]; 6nk }k]Ji  
else k K=VG< :M  
data[cur]=temp[i2++]; 8Q Try%  
} i pn-HUrE@  
} Be|! S_Y P  
|Ml~Pmpp  
} K(?V]Mxl6  
9;L4\  
改进后的归并排序: jOV6 %  
MZz9R*_VS  
package org.rut.util.algorithm.support; G^ GIHdo  
%f'pAc|#  
import org.rut.util.algorithm.SortUtil; 5$ =[x!x  
9Q1%+zjjMq  
/** #1%@R<`  
* @author treeroot 6!]@ S|vDX  
* @since 2006-2-2 @m5J%8>k  
* @version 1.0 6 >)fNCe`  
*/ aA4RC0'  
public class ImprovedMergeSort implements SortUtil.Sort { j9k:!|(2'  
%:~Ah6R1  
private static final int THRESHOLD = 10; a Y)vi$;]  
O H>.N"IG  
/* }K)A jZ  
* (non-Javadoc) TIJH} Ri  
* QT+kCN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1vo3aF  
*/ Hpix:To  
public void sort(int[] data) { \Hp!NbnF$  
int[] temp=new int[data.length]; T)e2IXGN  
mergeSort(data,temp,0,data.length-1); !U?C _  
} J~K O#`  
.h <=C&Yg  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4vL\t uoz  
int i, j, k; igQzL*X  
int mid = (l + r) / 2; ,C6(  
if (l == r) _t-6m2A  
return; fL| 9/sojz  
if ((mid - l) >= THRESHOLD) drAJ-ii  
mergeSort(data, temp, l, mid); -Cvd3%Jje  
else Zw)=Y.y!  
insertSort(data, l, mid - l + 1); UhJS=YvT  
if ((r - mid) > THRESHOLD) 3_@I E2dA  
mergeSort(data, temp, mid + 1, r); R>"pJbS;L  
else ^JxVs 7  
insertSort(data, mid + 1, r - mid); f=91 Z_M  
J <z ^C  
for (i = l; i <= mid; i++) { imADjBR]  
temp = data; 06HU6d ,  
} b6S"&hs  
for (j = 1; j <= r - mid; j++) { Srw`vql{(  
temp[r - j + 1] = data[j + mid]; Gd C=>\]  
} \ 3E%6L  
int a = temp[l]; lFuW8G,-f@  
int b = temp[r]; c@,1?q1bv  
for (i = l, j = r, k = l; k <= r; k++) { c k[uvH   
if (a < b) { L__{U_p  
data[k] = temp[i++]; gGNo!'o  
a = temp; R}(Rv3>Xx  
} else { WMKxGZg"  
data[k] = temp[j--]; rk %pA-P2  
b = temp[j]; ug}u>vQ>  
} a:P+HU:  
} 4NRj>y  
} UK'8cz9  
I5j|\ /Ht  
/** lw8t#_P  
* @param data <>5n;-  
* @param l <b~~X`Z  
* @param i 7&etnQJ{  
*/ F+5 5p8  
private void insertSort(int[] data, int start, int len) { kb$Yc)+R4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 43=)akJi  
} OtAAzc!dQ  
} Z!q$d/1  
} dM}c-=w`  
} pQZ`dS\  
"8) %XSb  
堆排序: BQ,749^S  
P7X3>5<;q  
package org.rut.util.algorithm.support; qz)KCEs  
Ta3* G  
import org.rut.util.algorithm.SortUtil; 1.,KN:qe  
kxrYA|x  
/** + i /4G.=*  
* @author treeroot y]!#$C /  
* @since 2006-2-2 nql{k/6  
* @version 1.0 Ya jAz5N  
*/ $<VH~Q<  
public class HeapSort implements SortUtil.Sort{ \ %xku:  
mDt!b6N/  
/* (non-Javadoc) Dm?:j9o]g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b5~p:f-&4B  
*/ E>|fbaN-%  
public void sort(int[] data) {  `uDOIl  
MaxHeap h=new MaxHeap(); Ke[`zui@?  
h.init(data); $Ups9pQ  
for(int i=0;i h.remove(); :v45Ls4J  
System.arraycopy(h.queue,1,data,0,data.length); =yRv *C  
} <Pf4[q&wM  
-:!Wds  
private static class MaxHeap{ .|P :n'  
pL*aU=FjQ  
void init(int[] data){ K4RQ{fWpm  
this.queue=new int[data.length+1]; y(a>Y! dgU  
for(int i=0;i queue[++size]=data; C!1)3w|  
fixUp(size); 'aeuL1mz  
}  '"hSX=  
} zII^Ny8D  
?{L'd  
private int size=0; . Y!dO@$:  
M`9|8f,!a  
private int[] queue; sw:a(o&$  
AnE] kq u  
public int get() { 1<Uv4S  
return queue[1]; BEAY}P(y3  
} 6Xn9$C)  
GUJ?6;  
public void remove() { m}beT~FT_  
SortUtil.swap(queue,1,size--); 8wkt9:  
fixDown(1); ^%\MOjSN  
} w%oa={x  
file://fixdown SY}"4=M?l  
private void fixDown(int k) { ZBQ@S  
int j; qd'Z|'j  
while ((j = k << 1) <= size) { &:}WfY!hX  
if (j < size %26amp;%26amp; queue[j] j++; bx-:aC)]2  
if (queue[k]>queue[j]) file://不用交换 cQ`0d3  
break; gTLBR  
SortUtil.swap(queue,j,k); @L 6)RF  
k = j; xNRMI!yv   
} <a+ @4d;  
} U{@2kg-  
private void fixUp(int k) { d<m.5ECC}  
while (k > 1) { *vqUOh  
int j = k >> 1; ,sg\K> H=  
if (queue[j]>queue[k]) >oi?aD%  
break; =?\%E[j  
SortUtil.swap(queue,j,k); wIWO?w2  
k = j; ^nFP#J)_5  
} uA t{WDHm  
} g`2O h5dA  
^/}&z  
} ;R@D  
rz%^l1@-  
} *q[;-E(fZ#  
r{*BJi.b  
SortUtil: wL>;_KdU`  
]8'PLsS9<w  
package org.rut.util.algorithm; _S-@|9\&#  
ao|n<*}  
import org.rut.util.algorithm.support.BubbleSort; bu08`P9  
import org.rut.util.algorithm.support.HeapSort; 2,|;qFJY-@  
import org.rut.util.algorithm.support.ImprovedMergeSort; `'pAiu  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7 Z? Hyv  
import org.rut.util.algorithm.support.InsertSort; W|s" ;EAM  
import org.rut.util.algorithm.support.MergeSort; eYu0")  
import org.rut.util.algorithm.support.QuickSort; <:8Ew  
import org.rut.util.algorithm.support.SelectionSort; )ac!@slb^7  
import org.rut.util.algorithm.support.ShellSort; F'B0\v =  
K(WKx7Kky^  
/** }O| 9Qb  
* @author treeroot *{\))Zmhd  
* @since 2006-2-2 @*|T(068&  
* @version 1.0 k;qWiYMV  
*/ 2n-kJl`: O  
public class SortUtil { [ Q/kNK  
public final static int INSERT = 1; 7lKatk+7K  
public final static int BUBBLE = 2; }WBHuVcZG  
public final static int SELECTION = 3; Bx5kqHp^1  
public final static int SHELL = 4;  }Fox  
public final static int QUICK = 5; )%lPKp4]  
public final static int IMPROVED_QUICK = 6; $2-_j)+  
public final static int MERGE = 7; `82Dm!V  
public final static int IMPROVED_MERGE = 8; /?Mr2!3N  
public final static int HEAP = 9; 'G>9iw  
v53|)]V  
public static void sort(int[] data) { ibG>|hV  
sort(data, IMPROVED_QUICK); |>.</68Z  
} es=OWJt^  
private static String[] name={ y O*   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JO90TP $  
}; & Y2xO  
=);@<Jp  
private static Sort[] impl=new Sort[]{ )OVa7[-T  
new InsertSort(), \<G"9w  
new BubbleSort(), uU^iY$w  
new SelectionSort(), ["4Tn0g ;  
new ShellSort(), ]0j_yX  
new QuickSort(), 1MT,A_L  
new ImprovedQuickSort(), a;M{ -G  
new MergeSort(), gU NWM^n  
new ImprovedMergeSort(), g x?r8  
new HeapSort() pVrY';[,|  
}; y\Utm$)j  
6<R[hIWpZ}  
public static String toString(int algorithm){ \j3dB tc  
return name[algorithm-1]; 4z9lk^#"X  
} .`V$j.a  
$$"G1<EZ  
public static void sort(int[] data, int algorithm) { VxARJ*4=Y  
impl[algorithm-1].sort(data); >}W[>WReI  
} cUdS{K&K  
3eXIo=  
public static interface Sort { `Pc<0*`a  
public void sort(int[] data); %~gI+0HK  
} $CX3P)% `  
c %Cbq0+2  
public static void swap(int[] data, int i, int j) { I0z7bx  
int temp = data; +oq<}CNr{  
data = data[j]; QCE7VV1Rw  
data[j] = temp; Pnm$g; `P  
}  (/,l0  
} 7 ]ysvSM  
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10+5=?,请输入中文答案:十五