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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。 E7hhew  
插入排序: ?%86/N>  
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package org.rut.util.algorithm.support; 3T 9j@N77  
^8tEach  
import org.rut.util.algorithm.SortUtil; q4q6c")zp  
/** VQI 3G  
* @author treeroot K,]=6 Rj  
* @since 2006-2-2 R+|hw;  
* @version 1.0 Vi}_{ Cy  
*/ g`^x@rj`E  
public class InsertSort implements SortUtil.Sort{ .hiSw  
;4a{$Lw~^9  
/* (non-Javadoc) zT/\Cj68  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bq>m{  
*/ e )ZUO_Q$  
public void sort(int[] data) { AGno6g  
int temp; D$N /FJ8|G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DlT{`  
} Mtv?:q  
} *I'yH8Fcn  
} kT?J5u _o  
v<;Md-<  
} Jwp7gYZ  
M2|is ~  
冒泡排序: CARzO7 b\w  
l,: F  
package org.rut.util.algorithm.support; Q&&@v4L   
m* ;ERK  
import org.rut.util.algorithm.SortUtil; v:p}B$  
4YHY7J  
/** z2c6T.1M  
* @author treeroot Fi1@MG5$2  
* @since 2006-2-2 zL it  
* @version 1.0 P4?glh q#  
*/ ddo#P%sH'  
public class BubbleSort implements SortUtil.Sort{ 7rA;3?p)  
8Y3I0S  
/* (non-Javadoc) y]im Z4{/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +RXoi2"-q@  
*/ :EH=_"  
public void sort(int[] data) { /bEAK-  
int temp; G:JR7N$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ k8Xm n6X  
if(data[j] SortUtil.swap(data,j,j-1); C?Ucu]cW  
} :LTN!jj  
} __@BUK{q  
} YP9^Bp{0  
} mTh]PPo   
zJXplvaL;  
} [Yyk0Qv|4  
l@\FWWQ  
选择排序: Tr|JYLwF  
FqifriLN  
package org.rut.util.algorithm.support; i?gSC<a  
&R siVBA  
import org.rut.util.algorithm.SortUtil; q =Il|Nb>  
':}\4j&{E  
/** w*!aZ,P  
* @author treeroot RyNs6  
* @since 2006-2-2 I|J/F}@p  
* @version 1.0 Mlq.?-QgIL  
*/ mt`.6Xz~  
public class SelectionSort implements SortUtil.Sort { a> )f=uS  
w:l"\Tm  
/* <or2  
* (non-Javadoc) W l1 6`9  
* .KC ++\{HE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yBRC*0+Vy  
*/ U3kyraj  
public void sort(int[] data) { 7rPF$ \#  
int temp; 8] ikygt"  
for (int i = 0; i < data.length; i++) { KF/-wZ"1s  
int lowIndex = i; bx Wa oWE0  
for (int j = data.length - 1; j > i; j--) { +O5hH8<&b  
if (data[j] < data[lowIndex]) { V+~Nalm O  
lowIndex = j; +>9Q/E  
} L]Mo;kT<Q  
} *qMY22X  
SortUtil.swap(data,i,lowIndex); 2[CdZ(k]5  
} iO[<1?  
} Il.K"ll  
!-Y3V"  
} Ve=b16H  
}-fl$j?9E  
Shell排序: " Jr-J#gg  
*' X3z@R  
package org.rut.util.algorithm.support; v LZoa-w:  
Kg$ Mx  
import org.rut.util.algorithm.SortUtil; `W-Fssu  
4fzZ;2sl}  
/** akT6^cP^  
* @author treeroot c(%|: P^  
* @since 2006-2-2 fzA9'i`  
* @version 1.0 pNIf=lA  
*/ D-4f.Tq4#  
public class ShellSort implements SortUtil.Sort{ JLi|Td "1%  
ty`DJO=Omj  
/* (non-Javadoc) CP{cAzHO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'QIqBU'~  
*/  bF(f*u  
public void sort(int[] data) { %IRi1EmN8  
for(int i=data.length/2;i>2;i/=2){ o]:9')5^  
for(int j=0;j insertSort(data,j,i); \L\b$4$d  
} 0RK!/:'  
} Z)\@i=m  
insertSort(data,0,1); K@#L)VT!  
} :@)>r9N  
)ANmIwmC#  
/** [9 RR8  
* @param data #,.Hr#3nI  
* @param j N?>vd*  
* @param i `@ FYkH  
*/ f {"?%Ku#  
private void insertSort(int[] data, int start, int inc) { 0L KRN|@  
int temp; @R  6@]Dm  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U?=Dg1  
} 9E tz[`|  
} qv*^fiT  
} e]tDy0@  
7= DdrG<  
} >U3cTEs cj  
RGU\h[  
快速排序: V!dtF,tH  
5D l/aHb  
package org.rut.util.algorithm.support; 2|bn(QYz  
u4_9)P`]0  
import org.rut.util.algorithm.SortUtil; g4@ lM"|S  
``Un&-Ms  
/** 42{:G8  
* @author treeroot ; Hd7*`$  
* @since 2006-2-2 7!$^r$t   
* @version 1.0 -tNUMi'  
*/ F3N6{ysK#  
public class QuickSort implements SortUtil.Sort{ d:{O\   
h=%_Ao<x  
/* (non-Javadoc) VQ{fne<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lPJ\-/>$z  
*/ l$'wDhN*  
public void sort(int[] data) { |a%Tp3Q~  
quickSort(data,0,data.length-1); V/;B3t~f  
} \_U$"/$4VH  
private void quickSort(int[] data,int i,int j){ Z: 7fV5b(  
int pivotIndex=(i+j)/2; TuYCR>P[  
file://swap 6i*sm.SDw  
SortUtil.swap(data,pivotIndex,j); 4,0{7MLgK  
Z`BK/:vo3H  
int k=partition(data,i-1,j,data[j]); ;ZG\p TCA  
SortUtil.swap(data,k,j); 65m"J'  
if((k-i)>1) quickSort(data,i,k-1); ^Q^_?~h*!  
if((j-k)>1) quickSort(data,k+1,j); rc>6.sM %  
\B 7tX  
} 2wgg7[tGi  
/** pU7lnS[  
* @param data  v<:R#  
* @param i jb;hcraR  
* @param j r(2uu  
* @return y#$CMf -q^  
*/ e NafpK  
private int partition(int[] data, int l, int r,int pivot) { R^e.s -  
do{ s|B3~Q]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &l[$*<P5V  
SortUtil.swap(data,l,r); w8D"CwS1Rx  
} A_#DJJMm  
while(l SortUtil.swap(data,l,r); !&Pui{F  
return l; /[>sf[X\I9  
} T${Q.zHY[!  
 50C   
} ]]juN  
ivz5H(b  
改进后的快速排序: -[DOe?T  
d&s9t;@=  
package org.rut.util.algorithm.support; c\V7i#u[d;  
)@'}\_a3[]  
import org.rut.util.algorithm.SortUtil; C=4Qlt[`  
,<p}o\6  
/** D{~fDRR  
* @author treeroot U!Z,xx[]  
* @since 2006-2-2 A$xF$l  
* @version 1.0 iRi-cQVy  
*/ %-e 82J1  
public class ImprovedQuickSort implements SortUtil.Sort { ?8Cq{  
Ezv Y"T@  
private static int MAX_STACK_SIZE=4096; Gm.]sE?.  
private static int THRESHOLD=10; QZ%`/\(!8_  
/* (non-Javadoc) H1(Uw:V8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NS6:yX,/  
*/ Mzw X>3x  
public void sort(int[] data) { +|>kCtZH%  
int[] stack=new int[MAX_STACK_SIZE]; }k G9!sf  
we?76t:-  
int top=-1; N<KS(@v y  
int pivot; O|N{ v"o  
int pivotIndex,l,r; *~j@*{u  
a"g!e^  
stack[++top]=0; *%t^;&x?  
stack[++top]=data.length-1; M>8A\;"  
3CGp`~Zf  
while(top>0){ a,#j =  
int j=stack[top--]; Q7COQ2~K   
int i=stack[top--];  H =^`!  
}:*]aL<7_  
pivotIndex=(i+j)/2; x*&|0n.D  
pivot=data[pivotIndex]; #3 pb(fbw  
B|AV$N*  
SortUtil.swap(data,pivotIndex,j); \K]0JH  
FzXJ]H  
file://partition eS mLf*\G  
l=i-1; h_IDO%  
r=j; ""Q P%  
do{ n`&U~s8w  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); x6ARzH\  
SortUtil.swap(data,l,r); U\<?z Dw  
} YNj`W1  
while(l SortUtil.swap(data,l,r); {9aE5kR  
SortUtil.swap(data,l,j); =;&yd';k  
pK'V9fD5J  
if((l-i)>THRESHOLD){ #7YY<) xt}  
stack[++top]=i; 5vZ^0yFQ  
stack[++top]=l-1; ^7KH _t8  
} g5QZ0Qkj  
if((j-l)>THRESHOLD){ x&T[*i  
stack[++top]=l+1; >:!X.TG$  
stack[++top]=j; y (pks$  
} s1=G;  
&<U0ZvrsH  
} -FQ 'agf@&  
file://new InsertSort().sort(data); )Z?Ym.0/  
insertSort(data); /U)D5ot<  
}  *m,k(/>  
/** Nf"r4%M<6  
* @param data oVe|M ss6  
*/ SHo$9+  
private void insertSort(int[] data) { /& +tf*  
int temp; I \JGs@I   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s '\Uap  
} -f>%+<k=  
}  J@Q7p}  
} MsGM5(r:b  
C"T;Qp~B  
} ,.1Psz^U  
Y@ksQ_u  
归并排序: qd)/9*|Jl  
Fv<F}h?6  
package org.rut.util.algorithm.support; .KUv( -  
Z%/=|[9i  
import org.rut.util.algorithm.SortUtil; "Yj'oE% \  
aAMVsE{  
/** ApV~( k)W  
* @author treeroot ~C`^6UQr/?  
* @since 2006-2-2 4'A!; ]:  
* @version 1.0 i||]V*5n  
*/ wN-d'-z/rd  
public class MergeSort implements SortUtil.Sort{ scou%K  
GV69eG3bX#  
/* (non-Javadoc) ;^%4Q"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QKN+>X  
*/ &3Sz je  
public void sort(int[] data) { nd1+"-,q  
int[] temp=new int[data.length]; #& Rw&  
mergeSort(data,temp,0,data.length-1); 1\>^m  
} Ix=}+K/  
&wCg\j_c  
private void mergeSort(int[] data,int[] temp,int l,int r){ K[r^'P5m  
int mid=(l+r)/2; >X4u]>X  
if(l==r) return ; b@f$nS B  
mergeSort(data,temp,l,mid); '*w00  
mergeSort(data,temp,mid+1,r); k$J zH$  
for(int i=l;i<=r;i++){ OAkZKG|  
temp=data; ~h85BF5  
} (#RHB`h5  
int i1=l; gSUcx9f]  
int i2=mid+1; Y M\ K%rk  
for(int cur=l;cur<=r;cur++){ zhRB,1iG  
if(i1==mid+1) 8a'.ZdqC?  
data[cur]=temp[i2++]; ( _)jkI \  
else if(i2>r) J| bd)0  
data[cur]=temp[i1++]; S(8$S])0  
else if(temp[i1] data[cur]=temp[i1++]; a$"Hvrj  
else R:k5QD9/&p  
data[cur]=temp[i2++]; N@1+O,o  
} oxkoA  
} 1Y@Aixx  
Qqvihd  
} TQ*1L:X7M&  
^_u kLzP9  
改进后的归并排序: 48qV >Gwf  
&c:Ad% z  
package org.rut.util.algorithm.support; #( jw!d&  
,5, !es@`b  
import org.rut.util.algorithm.SortUtil; E}p&2P+MR  
;1.,Sn+zO  
/** _Khc3Jo  
* @author treeroot Z9 9>5\k  
* @since 2006-2-2 D.Q=]jOs  
* @version 1.0 M#VE]J  
*/ /ZPyN<@  
public class ImprovedMergeSort implements SortUtil.Sort { `~Zs0  
$yYO_ZBiy  
private static final int THRESHOLD = 10; "C SC  
B$!)YD;  
/* V'T ,4  
* (non-Javadoc) 7=WT69,&  
* (>GK \=:<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `[)YEg s  
*/ %i-c0|,T4  
public void sort(int[] data) { _m'Fr 7  
int[] temp=new int[data.length]; r{ef.^&:  
mergeSort(data,temp,0,data.length-1); ReI/]#Us  
} Hp|_6hO 2  
sq[iY  
private void mergeSort(int[] data, int[] temp, int l, int r) { x`mN U  
int i, j, k; {{MRELipW  
int mid = (l + r) / 2; DRgTe&+  
if (l == r) ul2")HL];  
return; &twf,8  
if ((mid - l) >= THRESHOLD) PGBQn#c<  
mergeSort(data, temp, l, mid); ;YX4:OBqr  
else  }'/`2!lY  
insertSort(data, l, mid - l + 1); k"]dK,,  
if ((r - mid) > THRESHOLD) _/!y)&4"  
mergeSort(data, temp, mid + 1, r); ;z:UN}  
else \":m!K;Z  
insertSort(data, mid + 1, r - mid);  &8_gRP  
A"D,Kg S  
for (i = l; i <= mid; i++) { b7tOo7aH)  
temp = data; : b~6i%b  
} U1RpLkibQ  
for (j = 1; j <= r - mid; j++) { QxOjOKAG  
temp[r - j + 1] = data[j + mid]; rKf-+6Na  
} yA(K=?sq  
int a = temp[l]; B'EKM)dA  
int b = temp[r]; 7`8Ik`lY  
for (i = l, j = r, k = l; k <= r; k++) { BT"42#7_  
if (a < b) { aKuSd3E@#  
data[k] = temp[i++]; h{p=WWK  
a = temp; >ByXB!Wi+  
} else { aZ'Lx:)R  
data[k] = temp[j--]; p2udm!)J  
b = temp[j]; y+6o{`0  
} pg%aI,  
} )>-ibf`#?  
} K7Wk6Aw  
G\r?f&  
/** H& Ca`B  
* @param data a|=x5`h04~  
* @param l `poE6\  
* @param i LLXVNO@e+  
*/ P2'DD 3   
private void insertSort(int[] data, int start, int len) { !0C^TCuG  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); e0@Y#7N62  
} .?e\I`Kk^'  
} ,NVsn  
} e `,ds~  
} F^LZeF[#t  
FMkzrs  
堆排序: c#]q^L\x  
<_Q:'cx'  
package org.rut.util.algorithm.support; h!:~f-@j4  
y K2^Y]Ku?  
import org.rut.util.algorithm.SortUtil; S"k *6 U  
e-*.Ca  
/** ^=SD9V  
* @author treeroot 5-0{+R5v  
* @since 2006-2-2 9*=W-v  
* @version 1.0 e|D ;OM  
*/ mL`5u f  
public class HeapSort implements SortUtil.Sort{ Eb>78k(3I)  
(S`2[.j  
/* (non-Javadoc) mzc 4/<th  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `o?Ph&p}  
*/ r~nsN*t  
public void sort(int[] data) { VZ](uFBY  
MaxHeap h=new MaxHeap(); 1`9xIm*9w  
h.init(data); !i%"7tQ3$  
for(int i=0;i h.remove(); zyg  }F  
System.arraycopy(h.queue,1,data,0,data.length); e^Ky<*Y  
} z)=+ F]  
XNb ZNaAd  
private static class MaxHeap{ F. =Bnw/-  
RxN,^!OV  
void init(int[] data){ SdwS= (e6  
this.queue=new int[data.length+1]; b-*3 2Y%  
for(int i=0;i queue[++size]=data; ^ Dt#$Z  
fixUp(size); lmSo8/%T  
} =)` p_W  
} t2iv(swTe  
~~,rp) )  
private int size=0; yxq}QSb \3  
`VL}.h  
private int[] queue; STw#lU) %(  
(q7 Ry4-  
public int get() { \7 NpT}dj  
return queue[1]; U(;&(W"M  
} aCxE5$~$  
LtKI3ou  
public void remove() { \ y{Tn@7  
SortUtil.swap(queue,1,size--); T=:]]nf?M  
fixDown(1); )Cw`"n  
} ;kJA'|GX  
file://fixdown g@Qgxsyk>  
private void fixDown(int k) { b (I2m  
int j; PeE/iZ.  
while ((j = k << 1) <= size) { 2kUxD8BcN  
if (j < size %26amp;%26amp; queue[j] j++; iTg;7~1pY  
if (queue[k]>queue[j]) file://不用交换 @b3#X@e}  
break; A &9(mB  
SortUtil.swap(queue,j,k); okFvn;  
k = j; T'aec]u  
} @ (i!Y L  
} {?}*1,I  
private void fixUp(int k) { A?T<",bO  
while (k > 1) { FsGlJ   
int j = k >> 1; 9A7@ 5F  
if (queue[j]>queue[k]) "h7tnMS  
break; ) (Tom9 ^  
SortUtil.swap(queue,j,k); H<G4O02i_  
k = j; S"hTE7`   
} kY&h~Q  
} =@5x"MOz  
Iu35#j  
} E|$Oha[  
vHE^"l5v  
} K!mOr  
b]JI@=s?  
SortUtil: J!*/a'Cv  
'XUKN/.  
package org.rut.util.algorithm; ,xT?mt}P  
e%>b+ Sv  
import org.rut.util.algorithm.support.BubbleSort; A[YpcG'9  
import org.rut.util.algorithm.support.HeapSort; l@hjP1o  
import org.rut.util.algorithm.support.ImprovedMergeSort; @&hnL9D8lL  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;|cTHGxbE  
import org.rut.util.algorithm.support.InsertSort; rBN)a"  
import org.rut.util.algorithm.support.MergeSort; Wi}FY }f  
import org.rut.util.algorithm.support.QuickSort; 9cv]y#  
import org.rut.util.algorithm.support.SelectionSort; TV}}dw  
import org.rut.util.algorithm.support.ShellSort; h`}3h< 8  
m%8q Zzqk  
/** DBs*F x[  
* @author treeroot 1]T`n/d V  
* @since 2006-2-2 2 qO3XI  
* @version 1.0 S-nlr@w8  
*/ :9|W#d{o  
public class SortUtil { j` /&r*zNq  
public final static int INSERT = 1; [;b=A  
public final static int BUBBLE = 2; kV Rn`n0  
public final static int SELECTION = 3; *}):<nB$^  
public final static int SHELL = 4; OW(&s,|6x  
public final static int QUICK = 5; Ih[+K#t+E  
public final static int IMPROVED_QUICK = 6; +"g~"<  
public final static int MERGE = 7; :;!\vfZbU  
public final static int IMPROVED_MERGE = 8; #DkD!dW(l  
public final static int HEAP = 9; ;bX4(CMe &  
H2-28XGc  
public static void sort(int[] data) { @l UlY2  
sort(data, IMPROVED_QUICK); 3v!~cC~cI  
} ehAu^^Q>  
private static String[] name={ HZ*0QgW\(5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SgE/!+{  
}; =BZ?-mIU  
(HN4g;{  
private static Sort[] impl=new Sort[]{ k,Zm GllQ]  
new InsertSort(), bO/*2oau  
new BubbleSort(), ,goBq3[%?  
new SelectionSort(), &(xUhX T  
new ShellSort(), C+MSVc  
new QuickSort(), XDD<oo  
new ImprovedQuickSort(), wp.TfKxw  
new MergeSort(), G;oFTP>o  
new ImprovedMergeSort(), ]PNow S\  
new HeapSort() qsg>5E  
}; !)Rr] ~  
[Id}4[={e  
public static String toString(int algorithm){ IGAzE(  
return name[algorithm-1]; 4o9$bv  
} O:.,+,BH  
T_OF7?  
public static void sort(int[] data, int algorithm) { r FL$QC2  
impl[algorithm-1].sort(data); 396R$\q  
} 5GAy "Xd  
Z]:BYX'  
public static interface Sort { u&TdWZe  
public void sort(int[] data); $X+u={]  
} u:` y]  
g3?U#7i  
public static void swap(int[] data, int i, int j) { ? 4)v`*  
int temp = data; r[Zq3  
data = data[j]; q?~Rnv  
data[j] = temp; ZcryAm:I  
} / axTh  
} QlW=_Ymv{  
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