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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。 < Fs-3(V+\  
插入排序: P6Bl *@G  
*m+5Pr`7  
package org.rut.util.algorithm.support; )a=/8ofe  
;r=b|B9c  
import org.rut.util.algorithm.SortUtil; V 'X;jC  
/**  Voh hQ  
* @author treeroot /?"8-0d  
* @since 2006-2-2 kqvow3u  
* @version 1.0 ,J mbqOV?!  
*/ 8_uzpeRhJc  
public class InsertSort implements SortUtil.Sort{ SW(q$i  
WW@"Z}?k  
/* (non-Javadoc) y?30_#[dN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'ul\Q `N3  
*/ Qq0l* )mX  
public void sort(int[] data) { 0MIUI<;j  
int temp; 7Tf]:4Y"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >s*DrfX6  
} tUE'K.-  
} $2z _{@Z  
} 1 [z'G)v  
K.>wQA&  
} KA]*ox6j;  
=G-N` 39  
冒泡排序: U;xF#e  
(7$$;  
package org.rut.util.algorithm.support; $*~Iu%Az  
;5|1M8]=0  
import org.rut.util.algorithm.SortUtil; sLcY,AH  
qFR dg V>8  
/** h.tY 'F  
* @author treeroot o96:4j4  
* @since 2006-2-2 !FG%2L4?,5  
* @version 1.0 K <`>O, F  
*/ 'Am-vhpm  
public class BubbleSort implements SortUtil.Sort{ 32XS`Z  
&d$~6'x*  
/* (non-Javadoc) XYbyOM VI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J?712=9  
*/ ~I_owCVZ  
public void sort(int[] data) { )Id2GV~2B  
int temp; X:q_c=X  
for(int i=0;i for(int j=data.length-1;j>i;j--){ [ x>  
if(data[j] SortUtil.swap(data,j,j-1); LPE)  
} SN]LeXesS  
} ,-#GX{!  
} CB}BQd  
} K84&sSi  
OeTu?d&N  
} !L\'Mk/=A  
!*a[jhx  
选择排序: lmFA&s"m  
eK_*q -  
package org.rut.util.algorithm.support; >!BFt$sd  
ju{%'D!d9  
import org.rut.util.algorithm.SortUtil; E <@\>y.[  
h[U7!aM  
/** QrS$P09=\  
* @author treeroot F' BdQk3o  
* @since 2006-2-2 %8D?$v"#Z  
* @version 1.0 sc xLB;  
*/ HF4Lqh'oco  
public class SelectionSort implements SortUtil.Sort { ( pD7  
J:};n@<  
/* !J# .!}3  
* (non-Javadoc) BI/y<6#rR  
* ?aJ6ug  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "L_-}BK  
*/ wgZrrq/W|  
public void sort(int[] data) { HDj$"pS  
int temp; 4K,''7N3  
for (int i = 0; i < data.length; i++) { Q7k.+2  
int lowIndex = i; `vEqj v  
for (int j = data.length - 1; j > i; j--) { 1f;or_f#k?  
if (data[j] < data[lowIndex]) { eBvW#Hzp  
lowIndex = j; 9HKf^+';n  
} sRi%1r7  
} %BICt @E  
SortUtil.swap(data,i,lowIndex); ^srs$ w]  
} *H*\gaSh  
} GC?S];PL  
/s8/q2:  
} u\w2S4c  
`oPLl0  
Shell排序: [a+4gy  
&CO| Y(+  
package org.rut.util.algorithm.support; qZ?{-Vw  
nrbazyKm  
import org.rut.util.algorithm.SortUtil; FK3Whe{KP{  
gPp(e j7  
/** 3FY_A(+  
* @author treeroot w5 Z2N[hy  
* @since 2006-2-2 .t :DvB  
* @version 1.0 wO!% q[  
*/ xfes_v""  
public class ShellSort implements SortUtil.Sort{ R( GmU4  
IadK@?X6j  
/* (non-Javadoc) AtT"RG-6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7 y>(H<^>  
*/ lT3|D?sF  
public void sort(int[] data) { 3FuCW  
for(int i=data.length/2;i>2;i/=2){ XK3!V|y`  
for(int j=0;j insertSort(data,j,i); |yU3Kt  
} qkiJ HT  
} EqoASu  
insertSort(data,0,1); mDlCt_h  
} niQ+EAD  
B#Qpd7E+*  
/** |;~nI'0O])  
* @param data s9G)Bd 8  
* @param j K,G,di  
* @param i ` %l&zwj>  
*/ TG4^_nRl  
private void insertSort(int[] data, int start, int inc) { A%P 8c  
int temp; A0UV+ -PP  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); P:>'   
} ,RR;VKj  
} 9}.,2JE  
} n$IWoIdbGN  
(I>HWRH  
} ypgliq(  
4v0dd p  
快速排序: ~d&'Lp[3  
5 d>nIKW  
package org.rut.util.algorithm.support; v*smI7aH  
.zQ4/  
import org.rut.util.algorithm.SortUtil; @;g`+:=  
'lxLnX  
/** q|R+x7x  
* @author treeroot wEZ,49  
* @since 2006-2-2 &qNP?>C!=  
* @version 1.0 0W;q!H[G  
*/ +GRxHuW,  
public class QuickSort implements SortUtil.Sort{ dko[  
A J<iM)l|  
/* (non-Javadoc) u![4=w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qK<aZ%V  
*/ mipi]*ZfXE  
public void sort(int[] data) { yW%&_s0  
quickSort(data,0,data.length-1); m};~JMo]  
} l0eANB%Y=@  
private void quickSort(int[] data,int i,int j){ 9"m, p  
int pivotIndex=(i+j)/2; nrxjN(9V%+  
file://swap 1-4   
SortUtil.swap(data,pivotIndex,j); ]R97n|s_  
;+S2h-4  
int k=partition(data,i-1,j,data[j]); THrc H  
SortUtil.swap(data,k,j); ?y+\v'3v  
if((k-i)>1) quickSort(data,i,k-1); d,Hf-zJ%~  
if((j-k)>1) quickSort(data,k+1,j); L-^# 02  
>l7eoj  
} \DG( 8l  
/** }`+O$0A  
* @param data c.|sW2/  
* @param i X7'h@>R   
* @param j MsN2A6|33  
* @return )_Z]=5Ds  
*/ u i s:\Uc  
private int partition(int[] data, int l, int r,int pivot) { AlPL;^Y_l  
do{ GM34-GH+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y?"v2~;3  
SortUtil.swap(data,l,r); jUV#HT  
} cP}5}+  
while(l SortUtil.swap(data,l,r); fS;m+D!j@  
return l; z|t.y.JX  
} )W_ Y3M,  
|q1b8A\  
} e8WPV  
D@/9+]-,  
改进后的快速排序: 2c*VHIl;  
$g}/T_26  
package org.rut.util.algorithm.support; V^/h;/! ^  
BP7<^`i&  
import org.rut.util.algorithm.SortUtil; \kua9bK  
"9MX,}X*  
/** Zp% ""  
* @author treeroot V!yp@%D  
* @since 2006-2-2 jS5t?0  
* @version 1.0 P~b%;*m}8  
*/ Z(Ls#hp  
public class ImprovedQuickSort implements SortUtil.Sort { 3V8j>&  
A ydy=sj  
private static int MAX_STACK_SIZE=4096; %>x0*T$$  
private static int THRESHOLD=10; A7I8Z6&  
/* (non-Javadoc) f6/\JVi)-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rsq'60  
*/ 0X}w[^f  
public void sort(int[] data) { Ay[9k=q]  
int[] stack=new int[MAX_STACK_SIZE]; Ri%Of:zZ  
e2VL/>y`  
int top=-1; <)0LwkFtB  
int pivot; fR{WS:Pv  
int pivotIndex,l,r; Z)Xq!]~/g  
M\$<g  
stack[++top]=0; .,iw2:  
stack[++top]=data.length-1; vp9E}ga  
'KW+Rr~tZn  
while(top>0){ 3`C3+  
int j=stack[top--]; `b,g2XA  
int i=stack[top--]; Ug[F3J|Mu  
rqG6Ll`=+  
pivotIndex=(i+j)/2; r0XGGLFuZl  
pivot=data[pivotIndex]; Lh5+fk~i~8  
<P Z\qE*+y  
SortUtil.swap(data,pivotIndex,j); lf7H8k,-  
tI(t%~>^  
file://partition )F9V=PJE  
l=i-1; @o-evH;G  
r=j; :d/:Ga5v!  
do{ NIcNL(]  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ZB h@%A  
SortUtil.swap(data,l,r); l>Oe ,`9O  
} MJk:s[o  
while(l SortUtil.swap(data,l,r); zJym`NF  
SortUtil.swap(data,l,j); {gq:sj>  
^SES')x  
if((l-i)>THRESHOLD){ +r34\mAO  
stack[++top]=i; cVt$#A)  
stack[++top]=l-1; .cn w?EI  
} ]{l O  
if((j-l)>THRESHOLD){ l[ OQo|_  
stack[++top]=l+1; [_z2z6  
stack[++top]=j; Zi'8~iEH  
} $[9V'K  
Vf* B1Zb  
} 2LK*Cv[  
file://new InsertSort().sort(data); nHL>}Yg  
insertSort(data); W!Os ci  
} SX<>6vH&  
/** 5L'@WB|{4u  
* @param data K LM^O$=  
*/ (inwKRH  
private void insertSort(int[] data) { nT6iS}h  
int temp; 2T?1X{g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -)c"cgx.  
} yvnrZ&x :  
} S| ?--vai_  
} K0bmU(Xxp  
6O?Sr,  
} ,}$x'8v  
st^N QL  
归并排序: 5s2}nIe  
^ C#bW <T  
package org.rut.util.algorithm.support; dEl3?~  
D+nj[8y  
import org.rut.util.algorithm.SortUtil; |Szr=[  
oEf^o*5(  
/**  l3 Bc g  
* @author treeroot :BiR6>1:  
* @since 2006-2-2 Cl){sP=8W  
* @version 1.0 H_^u_ %:e  
*/ `RLrT3 4  
public class MergeSort implements SortUtil.Sort{ " ~hjB  
Or~6t}f  
/* (non-Javadoc) Z4tq&^ :c=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tm,L?Jh  
*/ icbYfgQ  
public void sort(int[] data) { M/I d\~  
int[] temp=new int[data.length]; Rs`Y'_B  
mergeSort(data,temp,0,data.length-1); WM7/|.HQ  
} t|,Ex7  
|1 6v4 R  
private void mergeSort(int[] data,int[] temp,int l,int r){ L*Cf&c`8r  
int mid=(l+r)/2; tOVm~C,R  
if(l==r) return ; QAw,XZ.K^  
mergeSort(data,temp,l,mid); ZOsn,nF  
mergeSort(data,temp,mid+1,r); nWsz0v3'9  
for(int i=l;i<=r;i++){ OlFn<:V K  
temp=data; YA8~O5  
} ^aMdbB  
int i1=l; H(m+rk  
int i2=mid+1; y=`(`|YW}`  
for(int cur=l;cur<=r;cur++){ a VMFjkW  
if(i1==mid+1) &g {_.n,  
data[cur]=temp[i2++]; _QCI< |A  
else if(i2>r) 00TdX|V`  
data[cur]=temp[i1++]; Wuz~$SU  
else if(temp[i1] data[cur]=temp[i1++]; _L.yt5_  
else "xI[4~'`:  
data[cur]=temp[i2++]; Mb!^_cS(  
} "|rqt.f2[  
} 1\kehCt  
TR20{8"  
} 4Fq}*QJ-  
%q^]./3p  
改进后的归并排序: *RM'0[1F4  
CB1u_E_  
package org.rut.util.algorithm.support; B/}>UHM  
:Aw VeX@  
import org.rut.util.algorithm.SortUtil; *@^0xz{\z  
VV0$L=mo  
/** [l:.Q?? )|  
* @author treeroot A@r,A?(  
* @since 2006-2-2 ] ={Hq9d@  
* @version 1.0 z(qz(`eGC&  
*/ 1 doqznO  
public class ImprovedMergeSort implements SortUtil.Sort { 470Pig>I8  
IF1}}[Ht  
private static final int THRESHOLD = 10; " cg>g/  
ZxQP,Ys_Y  
/* 6np wu5!  
* (non-Javadoc) 79_MP  
* rg\w!L(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `0F IJT  
*/ 5"U7I{\  
public void sort(int[] data) { @T"385>  
int[] temp=new int[data.length]; AP%h!b5v  
mergeSort(data,temp,0,data.length-1); 9`AQsZ2  
} |Oe6OCPf  
zAewE@N#_  
private void mergeSort(int[] data, int[] temp, int l, int r) { It[~0?+  
int i, j, k; 0'uj*Y{L  
int mid = (l + r) / 2; ~m7+^c@,  
if (l == r) 26A#X  
return; ^E^:=Q?'_  
if ((mid - l) >= THRESHOLD) yr?\YKV)I  
mergeSort(data, temp, l, mid); szHUHW~;J  
else S5JnJkNn  
insertSort(data, l, mid - l + 1); @Klj!2cv$  
if ((r - mid) > THRESHOLD) N<x5:f#+  
mergeSort(data, temp, mid + 1, r); `0D+x  
else #~b9H05D  
insertSort(data, mid + 1, r - mid); aO1cd_d6x_  
ryN-d%t?  
for (i = l; i <= mid; i++) { PLD!BD  
temp = data; <OUAppH  
} >qCT#TY  
for (j = 1; j <= r - mid; j++) { hjE9[{K  
temp[r - j + 1] = data[j + mid]; dU,/!|.K  
} 8Bhng;jX  
int a = temp[l]; hf[K\aAk  
int b = temp[r]; KGIz)/eSg  
for (i = l, j = r, k = l; k <= r; k++) { m<E7cY3mX  
if (a < b) { X^ovP'c2  
data[k] = temp[i++]; Vr'Z5F*@  
a = temp; 2rxdRg'YLQ  
} else { HwHI$IB  
data[k] = temp[j--]; MmX42;Pw  
b = temp[j]; $jHL8r\e7  
} rP'oU V_  
} {PU[MHZF  
} E^g6,Y:i9  
n}l Z  
/** t/3veDh@  
* @param data <C&UD j  
* @param l Ac|`5'/Tx  
* @param i ' |4XyU=  
*/ 3yTBkFI!  
private void insertSort(int[] data, int start, int len) { E(TY%wO  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .8"o&%$`V  
} .N%$I6w  
} IcA]<}0!"v  
} TqWvHZX  
} k2xjcrg  
Iv{}U\ u  
堆排序: iB\d `NUf  
$lO\eQGxB  
package org.rut.util.algorithm.support; pPIH`Iq  
6:e0?R^aD"  
import org.rut.util.algorithm.SortUtil; S`NH6?/uH  
3,pRmdC  
/** QPBf++|  
* @author treeroot o}[wu:>yk  
* @since 2006-2-2 blLX ncyD  
* @version 1.0 y_\d[  
*/ b7\nCRY  
public class HeapSort implements SortUtil.Sort{ Q 5Ln'La$  
WhkE&7Gk  
/* (non-Javadoc) 3iY`kf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^f4qs  
*/ %cBJ haR{(  
public void sort(int[] data) {  6CCM7  
MaxHeap h=new MaxHeap(); HbCM{A9  
h.init(data); `LNRl'Z m  
for(int i=0;i h.remove(); <}|+2f233+  
System.arraycopy(h.queue,1,data,0,data.length); : G<1   
} &Uzg&eB  
P}cGWfj  
private static class MaxHeap{ ).k=[@@V  
vh((HS-)  
void init(int[] data){ SV-pS>#  
this.queue=new int[data.length+1]; `?~pk)<C].  
for(int i=0;i queue[++size]=data; n`}vcVL;  
fixUp(size); ~~>D=~B0'  
} ^ng?+X>mP  
} YrA#NTB_o  
T'FRnC^~  
private int size=0; $=t&NM  
nd-y`@z  
private int[] queue; {D$#m  
"`16-g97  
public int get() { =p$1v{L8  
return queue[1]; Qb/qUUQO;0  
} cu.f]'  
vWwp'q  
public void remove() { m\[r6t]V  
SortUtil.swap(queue,1,size--); jeC3}BL }  
fixDown(1); `5Q0U%`W  
} sAWUtJ  
file://fixdown _r&`[@m  
private void fixDown(int k) { GoZr[=d  
int j; v-EcJj%  
while ((j = k << 1) <= size) { ?~hC.5  
if (j < size %26amp;%26amp; queue[j] j++; c V=h 8F  
if (queue[k]>queue[j]) file://不用交换 !Mceg  
break; F:1w%#6av  
SortUtil.swap(queue,j,k); K'Wg_ihA  
k = j; pvD\E  
} V~%!-7?  
} ?x=;?7  
private void fixUp(int k) { Z-.`JkKd8  
while (k > 1) { &V:iy  
int j = k >> 1; RdRF~~R%  
if (queue[j]>queue[k]) k9xfv@v}  
break; rgJKXl;@s  
SortUtil.swap(queue,j,k); 'WUd7  
k = j; Hcq?7_)  
} GMyzQ]@}  
} Qk *`9  
Gk g)\ 3  
} '1_CMr  
4[v %]g`  
} =`Pgo5A  
q ^Un,h64t  
SortUtil: pa*bqPi  
l03{ ezJk[  
package org.rut.util.algorithm; gi#bU  
h(l4\)  
import org.rut.util.algorithm.support.BubbleSort; T%B&HsH  
import org.rut.util.algorithm.support.HeapSort; e3oHe1"hP  
import org.rut.util.algorithm.support.ImprovedMergeSort; slaYr`u  
import org.rut.util.algorithm.support.ImprovedQuickSort; ZxF RE#y~2  
import org.rut.util.algorithm.support.InsertSort; Nk*d=vj  
import org.rut.util.algorithm.support.MergeSort; T{<riJ`O  
import org.rut.util.algorithm.support.QuickSort; p#g o<Y#  
import org.rut.util.algorithm.support.SelectionSort; pyJY]"UHVE  
import org.rut.util.algorithm.support.ShellSort; T)? : q  
#eadkj #;  
/** gqJSz}'  
* @author treeroot yyB;'4Af  
* @since 2006-2-2 8w /$!9[  
* @version 1.0 1fUg  
*/ 0h=NbLr|S-  
public class SortUtil { ;+jz=9Q-  
public final static int INSERT = 1; z-ns@y(f@X  
public final static int BUBBLE = 2; =z#6mSx|W  
public final static int SELECTION = 3; +?y ', Ir  
public final static int SHELL = 4; /6",#B}%b  
public final static int QUICK = 5; XT+V> H I  
public final static int IMPROVED_QUICK = 6; .Nt;J,U  
public final static int MERGE = 7; a4aM.o  
public final static int IMPROVED_MERGE = 8; ?TTtGbvU  
public final static int HEAP = 9; o?5m^S14[1  
0])D)%B k  
public static void sort(int[] data) { _[F(8Q x"  
sort(data, IMPROVED_QUICK); o_ng{SL  
} ISa}Km>Q  
private static String[] name={ Sq22]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" V9`?s0nn^  
}; <OgwA$abl%  
x Zp`  
private static Sort[] impl=new Sort[]{ 28 Q\{Z.  
new InsertSort(), R|D%1@i]  
new BubbleSort(), @~7y\G  
new SelectionSort(), (E(J}r~E  
new ShellSort(), _\&v A5-  
new QuickSort(), OTe h8h  
new ImprovedQuickSort(), hufpky[&8  
new MergeSort(), 1FA:"0lO  
new ImprovedMergeSort(), (>49SOu;$\  
new HeapSort() d!57`bVOd  
}; L0\~ K~q  
G]v BI=  
public static String toString(int algorithm){ 6+ UTEw;  
return name[algorithm-1]; <S ae:m4  
} DyPHQ}G  
QJ\+u  
public static void sort(int[] data, int algorithm) { DbWaF5\yD  
impl[algorithm-1].sort(data); G22{',#r8  
} Lm&BT)*  
 LA]UIM@  
public static interface Sort { 43.Q);4  
public void sort(int[] data); ]A&pX AM  
} pJdR`A-k|  
ctOBV  
public static void swap(int[] data, int i, int j) { f/95}6M  
int temp = data; 8AVtUU  
data = data[j]; P(%^J6[>  
data[j] = temp; 1SF8D`3  
} m)l'i!Y  
} 1'B&e)  
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