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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。 >$7B wO  
插入排序: 4qa.1j(R/  
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package org.rut.util.algorithm.support; "dlV k~  
/-s6<e!  
import org.rut.util.algorithm.SortUtil; |s_GlJV.  
/** LzL So"n  
* @author treeroot E{(;@PzE  
* @since 2006-2-2 xIn:ZKJ'  
* @version 1.0 i.#:zU%o  
*/ I/N *gy?*  
public class InsertSort implements SortUtil.Sort{ j>kqz>3  
`]aeI'[}R  
/* (non-Javadoc) i XN1I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  \=o-  
*/ wd6owr  
public void sort(int[] data) { &^nGtW%a 9  
int temp; %so]L+r2!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O6Y0XL  
} j<$2hiI/?&  
} l,).p  
} HaYo!.(Fv  
2<3K3uz  
} 7HWmCaa[  
F'Z,]b'st3  
冒泡排序: w-jVC^C]  
)/P}?` I  
package org.rut.util.algorithm.support; 30{ gI0jk  
Y);=TM6s  
import org.rut.util.algorithm.SortUtil; I1J-)R+  
AZ<= o  
/** PvL[e"p  
* @author treeroot H?w6C):]  
* @since 2006-2-2 Y/oHu@ _  
* @version 1.0 +C)~bb*  
*/ i#O SC5ZI  
public class BubbleSort implements SortUtil.Sort{ D_MmW  
lq uLT6]  
/* (non-Javadoc) A}!J$V:w]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .\mj4*?/  
*/ (<lhn  
public void sort(int[] data) { P<-@h1p,  
int temp; TA\vZGJ('  
for(int i=0;i for(int j=data.length-1;j>i;j--){ k:%%/  
if(data[j] SortUtil.swap(data,j,j-1); $~kA B8z  
} W*G<X.Hf  
} QGz|*]  
} g)B]FH1  
} |y*c9  
u? EN  
} F"kAkX>3}  
r_d! ikOT(  
选择排序: SX#&5Ka/  
^rz_f{c]-  
package org.rut.util.algorithm.support; L},_.$I?  
:'ptuY  
import org.rut.util.algorithm.SortUtil; >mkFV@`  
jWgX_//!  
/** H/Jbk*Q  
* @author treeroot +|f@^-  
* @since 2006-2-2 YYS0`  
* @version 1.0 O0:q;<>z  
*/ |BYRe1l6l  
public class SelectionSort implements SortUtil.Sort { ykJ>*z  
$Kd>:f=A  
/* 7$#u  
* (non-Javadoc) UZ";a453r  
* m[2gdJK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ig"L\ C"T  
*/ ^?|"L>y  
public void sort(int[] data) { &3&HY:yF  
int temp; g{LP7 D;6  
for (int i = 0; i < data.length; i++) { H*6W q  
int lowIndex = i; V~#tuv  
for (int j = data.length - 1; j > i; j--) { &j6erwaT  
if (data[j] < data[lowIndex]) { {G-kNU  
lowIndex = j; cb bFw  
} s[N@0  
} zeRyL3fnmb  
SortUtil.swap(data,i,lowIndex); m+9#5a-  
} 0`H# '/  
} |a@L}m  
hGrdtsH?  
} Zd&S@Z  
('~LMu_  
Shell排序: [Qr"cR^  
!m$jk2<  
package org.rut.util.algorithm.support; V )4J`xg^  
4K74=r),i  
import org.rut.util.algorithm.SortUtil; *ui</+  
vSh`&w^*  
/** ?ubro0F:  
* @author treeroot $d4n"+7  
* @since 2006-2-2 '>" 4  
* @version 1.0 X?Au/  
*/ a{e4it  
public class ShellSort implements SortUtil.Sort{ B<-Wea  
(.,G=\!  
/* (non-Javadoc) Ca\6vR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,?3G;-  
*/ z{>Rc"%\  
public void sort(int[] data) { K^[?O{x^B  
for(int i=data.length/2;i>2;i/=2){ Ho%CDz z  
for(int j=0;j insertSort(data,j,i); +[P{&\d4}  
} Zc2PepIg  
} 11lsf/IP  
insertSort(data,0,1); D{!IW!w  
} xC?h2hIt  
<Gsu Z  
/** j.YA 2mr  
* @param data n`KY9[0U=  
* @param j  _4f;<FL  
* @param i }\LQ3y"[  
*/ 8ipez/  
private void insertSort(int[] data, int start, int inc) { Debv4Gr;^  
int temp; =lC7gS!U  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7o4\oRGV  
} cnLro  
}  3CJwj  
} e# bn#  
g=rbPbu  
} c`W,~[Q<O+  
y)*RV;^  
快速排序: H>C=zo,oiC  
Cyp'?N  
package org.rut.util.algorithm.support; olcDt&xv]  
Y$zSQ_k;U  
import org.rut.util.algorithm.SortUtil; Q.[0ct  
P*o9a  
/** ;=N# `l  
* @author treeroot 9B4&m|g  
* @since 2006-2-2 K%d&EYoW]  
* @version 1.0 0aAoV0fMDz  
*/ 2?x4vI np;  
public class QuickSort implements SortUtil.Sort{ H#&00Q[  
Lr<cMK<  
/* (non-Javadoc) U~8g_*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `2snz1>!j  
*/ u&NV,6Fj2[  
public void sort(int[] data) { *] (iS  
quickSort(data,0,data.length-1); 7Ix973^  
} M?qy(zb  
private void quickSort(int[] data,int i,int j){ $u.z*b_yy  
int pivotIndex=(i+j)/2; D]}G.v1  
file://swap {8OCXus3m  
SortUtil.swap(data,pivotIndex,j); M}Sv8D]I  
"oD[v  
int k=partition(data,i-1,j,data[j]); 36NpfTW  
SortUtil.swap(data,k,j); ceV}WN19l  
if((k-i)>1) quickSort(data,i,k-1); 4Up/p&1@  
if((j-k)>1) quickSort(data,k+1,j); }'.m*#Y  
4z? l  
} ;aBG,dr}i  
/** C]#,+q*  
* @param data PM+[,H  
* @param i B3BN`mdn>  
* @param j G2Zer=rC  
* @return *or(1DXP8  
*/ ]oxZ77ciL  
private int partition(int[] data, int l, int r,int pivot) { "fI6Cpc  
do{ '%D7C=;^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c:0L+OF}xY  
SortUtil.swap(data,l,r); JO;Uus{?  
} w@b)g  
while(l SortUtil.swap(data,l,r); (?c-iKGc  
return l; OH88n69  
} Z7#+pPt!  
7"mc+QOp  
} Zh,71Umz  
g ?k=^C  
改进后的快速排序: . ^u,.  
;I*o@x_  
package org.rut.util.algorithm.support; Ei|\3Kx  
`g,..Ns-r  
import org.rut.util.algorithm.SortUtil; Ngwb Q7)  
s>en  
/** H.c7Nle  
* @author treeroot 25T18&R  
* @since 2006-2-2 G"6 !{4g  
* @version 1.0 O}P`P'Y|'  
*/ OPi0~s  
public class ImprovedQuickSort implements SortUtil.Sort { $Y;RKe9  
j6YOKJX  
private static int MAX_STACK_SIZE=4096; ;,TFr}p`  
private static int THRESHOLD=10; \8 ":]EU  
/* (non-Javadoc) Kgv T"s.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %$I;{-LD  
*/ 0erNc'e  
public void sort(int[] data) { U(Zq= M  
int[] stack=new int[MAX_STACK_SIZE]; 9z0p5)]n>  
phK/   
int top=-1; |zU-KGO&  
int pivot; XkqCZHYkS  
int pivotIndex,l,r; :U\tv[  
O8o3O 6[Y  
stack[++top]=0; dI2 V>vk  
stack[++top]=data.length-1; y9;Yiv r)  
=vPj%oLp'a  
while(top>0){ lk!@?  
int j=stack[top--]; *#2h/Q.  
int i=stack[top--]; Fs{*XKv&lH  
~[ F`"  
pivotIndex=(i+j)/2; )1z@  
pivot=data[pivotIndex]; pw#-_  
@L`jk+Y0vF  
SortUtil.swap(data,pivotIndex,j); K'xV;r7Nt  
G B^Br6  
file://partition 9$Y=orpWxr  
l=i-1; 83m3OD_y  
r=j; ~>G^=0LT  
do{ CAlCDfKW}  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @d_M@\r=j  
SortUtil.swap(data,l,r); +_`7G^U?%  
} E{\2='3\  
while(l SortUtil.swap(data,l,r); Y@v>FlqI{  
SortUtil.swap(data,l,j); YQ} o?Q$z  
. me;.,$#  
if((l-i)>THRESHOLD){ .X&9Q9T=#  
stack[++top]=i; t7pFW^&  
stack[++top]=l-1; jo7\`#(Q  
} /}$+uBgJm  
if((j-l)>THRESHOLD){ hb-%_c"kq  
stack[++top]=l+1; x38 QD;MT  
stack[++top]=j; b$7 +;I;  
}  k'YTpO  
DH=hH&[e(d  
} FwK] $4*  
file://new InsertSort().sort(data); [ )F<V!  
insertSort(data); N#] ypl  
} f^e)O$N9]  
/** SJLis"8  
* @param data 7=uj2.J6  
*/ 3%6? g*  
private void insertSort(int[] data) { zCA2X !7F  
int temp; [Pp'Ye~K@c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k+ /6$pI  
} 46x'I(  
} xo)P?-  
} [UR-I0 s!/  
6Zo}(^Ovz  
} /1 dT+>  
pCDmXB  
归并排序: W)/#0*7  
^OdP4m( >>  
package org.rut.util.algorithm.support; }vuARZ>  
K"6vXv4QO  
import org.rut.util.algorithm.SortUtil; iscz}E,Y  
`V1]k_h  
/** qK+5NF|  
* @author treeroot Sdo-nt  
* @since 2006-2-2 UG^q9 :t  
* @version 1.0 mDWG7Asp  
*/ i%/+5gq  
public class MergeSort implements SortUtil.Sort{ x;S @bY  
S/ *E,))m  
/* (non-Javadoc) +q4O D$}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [^)g%|W  
*/ OI*H,Z "  
public void sort(int[] data) {  G*m 0\  
int[] temp=new int[data.length]; dr(*T  
mergeSort(data,temp,0,data.length-1); m 5.Zu.  
} v19-./H^ j  
]'cs.  
private void mergeSort(int[] data,int[] temp,int l,int r){ gR**@t=;j  
int mid=(l+r)/2; =l6mL+C  
if(l==r) return ; #E?4E1bnB  
mergeSort(data,temp,l,mid); f3;5Am  
mergeSort(data,temp,mid+1,r); >?b!QU* a  
for(int i=l;i<=r;i++){ #WuBL_nZ~  
temp=data; u, ff>/1  
} s7<AfaJPF  
int i1=l; #spCtZE  
int i2=mid+1; >z03{=sAN  
for(int cur=l;cur<=r;cur++){ ^~dWU>  
if(i1==mid+1) qM`}{ /i  
data[cur]=temp[i2++]; x:;kSh  
else if(i2>r) Q8NX)R  
data[cur]=temp[i1++]; QZs!{sZ  
else if(temp[i1] data[cur]=temp[i1++]; 4Ig;3 ^%71  
else Y73C5.dNcE  
data[cur]=temp[i2++]; 0f/<7R  
} s1rCpzK0  
} pRqx`5 }  
ixFi{_  
} .8R@2c`}Cs  
m*pJBZxd  
改进后的归并排序: w(/S?d  
AdEMa}u 6  
package org.rut.util.algorithm.support; 2iOV/=+  
YVU7wW,1  
import org.rut.util.algorithm.SortUtil; \G[$:nS  
F847pyOJnf  
/** ^#$n~]s  
* @author treeroot Wri<h:1  
* @since 2006-2-2 53D]3  
* @version 1.0 A<{{iBEI`  
*/ d~H`CrQE*  
public class ImprovedMergeSort implements SortUtil.Sort { ?}0,o.  
|N2#ItBbW  
private static final int THRESHOLD = 10; %A`+WYeuX  
t!XwW$@  
/* KHme&yMq  
* (non-Javadoc) ]`K2 N  
* vgPCQO([  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sT)CxOV  
*/ m@c)Xci  
public void sort(int[] data) { 3$ pX  
int[] temp=new int[data.length]; NOva'qk  
mergeSort(data,temp,0,data.length-1); j_AACq {.  
} UVP vOtZj  
WE?5ehEme  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]/Pn EU[  
int i, j, k; fex@,I&  
int mid = (l + r) / 2; f8~_E  
if (l == r) Tbq;h ?D  
return; <YY14p  
if ((mid - l) >= THRESHOLD) >Ry01G]_/h  
mergeSort(data, temp, l, mid); $mILoy B,  
else !zo{tI19  
insertSort(data, l, mid - l + 1); a9gLg &  
if ((r - mid) > THRESHOLD) CrLrw T  
mergeSort(data, temp, mid + 1, r); 3S{ />1Y  
else ";F'~}bDA  
insertSort(data, mid + 1, r - mid); i@yC-))bY  
s_Sk0}e  
for (i = l; i <= mid; i++) { ;TYBx24vD'  
temp = data; K-4PI+qQ\  
} _b 0& !l<  
for (j = 1; j <= r - mid; j++) { n S=W1zf  
temp[r - j + 1] = data[j + mid]; HfVZ~PP  
} 1#x0q:6  
int a = temp[l]; Da|z"I x  
int b = temp[r]; mt .sucT  
for (i = l, j = r, k = l; k <= r; k++) { q m}@!z^  
if (a < b) { d0D] Q  
data[k] = temp[i++]; ^!d3=}:0  
a = temp; iTwm3V P  
} else { ;pAK_>  
data[k] = temp[j--]; GOPfXtkC  
b = temp[j]; ;p//QJB9  
} LoV<:|GTI  
} jp,4h4C^)  
} K0~rN.C!0  
?4,T}@P  
/** 1?}T=)3+$  
* @param data DQ3<$0  
* @param l dN q$}  
* @param i h{Y",7] !  
*/ D7Z /H'|  
private void insertSort(int[] data, int start, int len) { gdc<ZYcM  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7#Ft|5$~q  
} tw;}jh  
} 1Mzmg[L8  
} 'L'R9&o<X  
} f|5co>Hk  
7.Op<  
堆排序:  ?9/G[[(  
sRs>"zAg  
package org.rut.util.algorithm.support; dV_G1'  
?`s8 pPc4  
import org.rut.util.algorithm.SortUtil; e6*8K@LHB  
**%37  
/** lxx2H1([  
* @author treeroot RZLq]8pM  
* @since 2006-2-2 3fj4%P"  
* @version 1.0 MtdG>TzUn  
*/ ^q5#ihM  
public class HeapSort implements SortUtil.Sort{ ?s01@f#  
Hl"N}   
/* (non-Javadoc) #mdc[.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o!Zb0/AP)  
*/ K+eM   
public void sort(int[] data) { js(pC@<q5  
MaxHeap h=new MaxHeap(); .('SW\u-  
h.init(data); Z@HEj_n  
for(int i=0;i h.remove(); ftb\0,-   
System.arraycopy(h.queue,1,data,0,data.length); j#|ZP-=1_  
} vh^VxS  
q9"96({\@  
private static class MaxHeap{ i1UsIT  
zhQJy?>'m  
void init(int[] data){ ="+#W6bZT  
this.queue=new int[data.length+1]; (PL UFT  
for(int i=0;i queue[++size]=data; m O_af  
fixUp(size); cuX)8+  
} !$ JT e  
} 6k%f  
e~OpofJNb  
private int size=0; 2y4bwi  
*dQSw)R  
private int[] queue; 5pX6t  
i-1op> Y  
public int get() { &C}*w2]0S  
return queue[1]; =_CzH(=f#  
} rq{$,/6.  
}BEB1Q}L  
public void remove() { )0`C@um  
SortUtil.swap(queue,1,size--); 81F9uM0  
fixDown(1); vM={V$D&  
} e\rp)[>'  
file://fixdown Rq-ZL{LR7  
private void fixDown(int k) { -"x$ZnHU  
int j; E .h*g8bXe  
while ((j = k << 1) <= size) { 0GwR~Z}Z  
if (j < size %26amp;%26amp; queue[j] j++; 5xiEPh  
if (queue[k]>queue[j]) file://不用交换 ).O)p9  
break; KNl$3nX  
SortUtil.swap(queue,j,k); 0GLM(JmK  
k = j; ~%oR[B7=|  
} Eci\a]  
} @7 }W=HB  
private void fixUp(int k) { >P(.:_ ^p  
while (k > 1) { kh<2BOV  
int j = k >> 1; F4QVAOM]U  
if (queue[j]>queue[k]) :jf3HG  
break; &{:-]g\  
SortUtil.swap(queue,j,k); gXU8hTd8  
k = j; u8^lB7!e/  
} `[A];]  
}  *CMx-_  
BT$_@%ea&  
} t20K!}D_  
TeQV?ZQ#}  
} xdPx{"C 3  
DU^loB+  
SortUtil: P?<y%c<  
, gHDx  
package org.rut.util.algorithm; _1^'(5f$  
y_,bu^+*  
import org.rut.util.algorithm.support.BubbleSort; YSMAd-Ef-  
import org.rut.util.algorithm.support.HeapSort; [[ZJ]^n,  
import org.rut.util.algorithm.support.ImprovedMergeSort; )7@0[>  
import org.rut.util.algorithm.support.ImprovedQuickSort; )oZ dj`  
import org.rut.util.algorithm.support.InsertSort; "@kaHIf[  
import org.rut.util.algorithm.support.MergeSort; f$( e\+ +  
import org.rut.util.algorithm.support.QuickSort; 3`HV(5U[  
import org.rut.util.algorithm.support.SelectionSort; gw(z1L5 n  
import org.rut.util.algorithm.support.ShellSort; K3C<{#r  
<@}9Bid!o  
/** al0L&z\  
* @author treeroot jIyQ]:*p  
* @since 2006-2-2 Kw}'W 8`c  
* @version 1.0 nN;u,}e  
*/ zs;JJk^  
public class SortUtil { a*;b^Ze`v  
public final static int INSERT = 1; (H]AR8%W  
public final static int BUBBLE = 2; yZ:qU({KhD  
public final static int SELECTION = 3; iso4]>LF  
public final static int SHELL = 4; @HW*09TG  
public final static int QUICK = 5; Efe 7gE'  
public final static int IMPROVED_QUICK = 6; & kIFcd@  
public final static int MERGE = 7; iLT}oKF2N;  
public final static int IMPROVED_MERGE = 8; 9mgIUjz  
public final static int HEAP = 9; ^Cmyx3O^  
$>gFf}#C  
public static void sort(int[] data) { H]s.=.Ki  
sort(data, IMPROVED_QUICK); 6@o*xK7L  
} POW>~Tof1  
private static String[] name={ QJNFA}*>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0x7'^Z>-oe  
}; $kgVa^  
kza5ab  
private static Sort[] impl=new Sort[]{ V]&\fk-{  
new InsertSort(), R]dg_Da  
new BubbleSort(), ^aQ"E9  
new SelectionSort(), g}i61(  
new ShellSort(), fM}#ON>Z  
new QuickSort(), +p^u^a  
new ImprovedQuickSort(), neh(<>  
new MergeSort(), "b[5]Y{ U  
new ImprovedMergeSort(), l, wp4 Ll  
new HeapSort() wBzC5T%,  
}; ]9L oZ)  
fVwU e _Y  
public static String toString(int algorithm){ 'yth'[  
return name[algorithm-1]; B *vM0  
} .pq%?&  
E4!Fupkpf  
public static void sort(int[] data, int algorithm) { \ jA~9  
impl[algorithm-1].sort(data); +"(jjxJm  
} !BI;C(,RL  
#g=XUZ/"  
public static interface Sort { V]N?6\Op  
public void sort(int[] data); Qd6FH2Pl  
} *VeRVaBl  
5;S.H#YOpO  
public static void swap(int[] data, int i, int j) { bcR_E5x$  
int temp = data; % nIf)/2g  
data = data[j]; AS,%RN^.  
data[j] = temp; ;=@0'xPEa-  
} -8Xf0_  
} +#By*;BJ  
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