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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。 8y]{I^z}  
插入排序: l0%7u  
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package org.rut.util.algorithm.support; <,&t}7M/:  
2bOFH6g  
import org.rut.util.algorithm.SortUtil; J>+~//C  
/** D\z`+TyJ  
* @author treeroot p<Vj<6.=?  
* @since 2006-2-2 y6>fK@K~  
* @version 1.0 ~@D{&7@  
*/ iMF-TR  
public class InsertSort implements SortUtil.Sort{ w#>CYP`0k6  
OB+QVYk"  
/* (non-Javadoc) J/c5)IB|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .R&jRtb/E  
*/ n-CFB:L  
public void sort(int[] data) { Z07SK ' U  
int temp; cXt]55"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); TcH7!fUj  
} YS>VQl  
} &[[Hfs2:-]  
} r@G34Q C+  
4z^VwKH\j  
} ^{64b  
e @|uG%  
冒泡排序: -D wO*f  
Ots]y  
package org.rut.util.algorithm.support; S\6.vw!'  
8q|T`ac+N  
import org.rut.util.algorithm.SortUtil; )fbYP@9>a  
%}Z1KiRiX  
/** |N5|B Q(y$  
* @author treeroot g`41d  
* @since 2006-2-2 %WFZ&>en&  
* @version 1.0 YDGW]T]i ?  
*/ v(Q-RR  
public class BubbleSort implements SortUtil.Sort{ E&\ 0+-Dw  
R7Z!  
/* (non-Javadoc) piAFxS<6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (q=),3/<pU  
*/ P?<G:]W  
public void sort(int[] data) { E7@m& R  
int temp; B\quXE)  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1j!{?t ?  
if(data[j] SortUtil.swap(data,j,j-1); ;sY n=r  
} 4R9y~~+  
} +<sv/gEt  
} Vd A!tL  
} CD)JCv  
{br6*  
} y2>AbrJ  
\!4_m8?  
选择排序: gLWbd~  
pUeok+k_  
package org.rut.util.algorithm.support; gO_d!x*  
rC6{-42bb  
import org.rut.util.algorithm.SortUtil; GNM+sd y+  
US] I[Y6V  
/** yzyK$WN\[3  
* @author treeroot U;FJSy  
* @since 2006-2-2 b4>1UZGW-  
* @version 1.0 Url8&.pw  
*/ _{?-=<V'_  
public class SelectionSort implements SortUtil.Sort { GNoUn7Y  
u X+ YH  
/* :E2 ww`  
* (non-Javadoc) 2@|,VN V6~  
* v=E(U4v9e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7K /quJ  
*/ {w<"jw&2  
public void sort(int[] data) { F;Bq[V)R  
int temp; S H6T\}X:  
for (int i = 0; i < data.length; i++) { i: VMC NH  
int lowIndex = i; IkgRZ{Y  
for (int j = data.length - 1; j > i; j--) { x\K,@  
if (data[j] < data[lowIndex]) { |6b&khAM  
lowIndex = j; Ko %e#q-  
} Si-Q'*Y=  
} fmv,)UP  
SortUtil.swap(data,i,lowIndex); *+j r? |  
} MD[;Ha  
} ;AJ6I*O@+  
 x]~&4fp  
} `5MK(K :  
p4z thdN[  
Shell排序: /q?g py  
S X[  
package org.rut.util.algorithm.support; r)[Xzn   
Uh3N#O  
import org.rut.util.algorithm.SortUtil; 6-f-/$B  
1i;#cIG  
/** X1^Q1?0  
* @author treeroot !PJp()  
* @since 2006-2-2 sv+ 6#  
* @version 1.0 E>bpq ^;r  
*/ 1i@a? 27|  
public class ShellSort implements SortUtil.Sort{ ]+T$ D  
QQ./!   
/* (non-Javadoc) F?b"Rv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4,?WNPqo  
*/ q;QE(}.g  
public void sort(int[] data) { & DhdB0Hjf  
for(int i=data.length/2;i>2;i/=2){ .T#}3C/  
for(int j=0;j insertSort(data,j,i); E*d UJ.>  
} #S"s8wdD  
} \qtdbi|Y  
insertSort(data,0,1); !>EK %OO  
} m`Pk)c0  
Sn[/'V^$a  
/** )&93YrHgC  
* @param data C(2kx4n  
* @param j (9v%66y  
* @param i G$;cA:p-j  
*/ KxQMPtHstz  
private void insertSort(int[] data, int start, int inc) { o~26<Lk  
int temp; ^n*:zmD  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c uHF^l  
} ^#4Ah[:XA  
} Oe lf^&m  
} <yw56{w,  
XCyrr 2^  
} zE i\#Zg$  
aq - |  
快速排序: xpBQ(6Y  
q$'[&&_  
package org.rut.util.algorithm.support; u]& +TR  
eZ{Ce.lNR  
import org.rut.util.algorithm.SortUtil; bmO(tQS$5  
r\FduyOXv  
/** DSK?7F$_oE  
* @author treeroot 3(_:"?xA  
* @since 2006-2-2 ,6SzW+L7  
* @version 1.0 Ht|"91ZC5  
*/ :}-izd)/j  
public class QuickSort implements SortUtil.Sort{  C~T*Wlk  
ff 6x4t  
/* (non-Javadoc) 3)hQT-)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3 5/ s\  
*/ 4mnVXKt%.  
public void sort(int[] data) { ^;wz+u4^l  
quickSort(data,0,data.length-1); 1wBmDEhS  
} ym'!f|9AA  
private void quickSort(int[] data,int i,int j){ Wjr^: d  
int pivotIndex=(i+j)/2; Av!xI  
file://swap |v_ttJ;+Y  
SortUtil.swap(data,pivotIndex,j); LR3>_t  
RM>A9nv$\  
int k=partition(data,i-1,j,data[j]); $J#Z`%B^y  
SortUtil.swap(data,k,j); ,@\z{}~v  
if((k-i)>1) quickSort(data,i,k-1); ] U,m 1  
if((j-k)>1) quickSort(data,k+1,j); @?bY,  
\s7/`  
} /4KHf3Nr  
/** &FWz7O>1  
* @param data DC0O N`  
* @param i ?*'0;K13  
* @param j K?>sP%m)  
* @return 9(lcQuE9  
*/ YI2x*t!  
private int partition(int[] data, int l, int r,int pivot) { <7`U1DR=  
do{ 4<Kxo\\S  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); svtqX-Vj"  
SortUtil.swap(data,l,r); ?%$~Bb _  
} Q+s2S>U{v  
while(l SortUtil.swap(data,l,r); AOe f1^S=  
return l; ~vcua@  
} ^0?ww&X  
v ,zD52  
} 15d'/f  
-K/c~'%'*  
改进后的快速排序: LQV&;O4'  
M"6J"s  
package org.rut.util.algorithm.support; hx ^l  
0bOT&Z^  
import org.rut.util.algorithm.SortUtil; ua,!kyS  
#44}Snz  
/** [}dPn61  
* @author treeroot 25<qo{  
* @since 2006-2-2 $GYy[8{:V  
* @version 1.0 1p=bpJC  
*/ `cPZsL  
public class ImprovedQuickSort implements SortUtil.Sort { 8Yo;oHk7  
MeV*]*   
private static int MAX_STACK_SIZE=4096; B qLL]%F  
private static int THRESHOLD=10; 03"FK"2S  
/* (non-Javadoc) .@$ A~/ YU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6W:FT Pt44  
*/ 5..YC=_20  
public void sort(int[] data) { %!8w)1U  
int[] stack=new int[MAX_STACK_SIZE]; i`=%X{9  
9+ |W;  
int top=-1; I]BhkJ  
int pivot; I= a?z<  
int pivotIndex,l,r; @mb'!r  
t*`Sme]"B  
stack[++top]=0; eKf5orN  
stack[++top]=data.length-1; u#NX`_  
4j(`koX_  
while(top>0){ WJMmt XO  
int j=stack[top--]; p3e=~{v*  
int i=stack[top--]; ^tIYr <I  
tJmy}.t1  
pivotIndex=(i+j)/2; uvJ&qd8M  
pivot=data[pivotIndex]; dA<_`GFR  
JL>DRIR%NV  
SortUtil.swap(data,pivotIndex,j); 00@F?|-j  
=sF4H_B  
file://partition r_kaS als  
l=i-1; f,ZJFb98  
r=j; .o]9 HbIk5  
do{ 6C\WX(@4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A (H2Gt D  
SortUtil.swap(data,l,r); U>@AE  
} u"m TS&  
while(l SortUtil.swap(data,l,r); BCtKxtbS  
SortUtil.swap(data,l,j); f?> ?jf  
&.qLE  
if((l-i)>THRESHOLD){ P)LOAe1'  
stack[++top]=i; I hv@2{*(b  
stack[++top]=l-1; HE>V\+ AL  
} |9X2AS Qu  
if((j-l)>THRESHOLD){ `?SC.KT  
stack[++top]=l+1; DuLl"w\_@  
stack[++top]=j; N1 sdWXG  
} W }v ,6Oe  
c'mg=jH  
} \:+ NVIN  
file://new InsertSort().sort(data); =woP~+  
insertSort(data); dI>cPqQ  
} bh#6yvpMR  
/** db&!t!#,  
* @param data \S&OAe/b  
*/ %(]B1Zg6,  
private void insertSort(int[] data) { ?bg /%o  
int temp; zKp R:F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &eqqgLz  
} w9n0p0xr<  
} T(Bcp^N  
} J'tJY% `  
T#i~/  
} <":83RCS  
.gt;:8fw{  
归并排序: <j/wK]d*/  
q=-h#IF^  
package org.rut.util.algorithm.support; 6ND*L0  
;mC|> wSZ  
import org.rut.util.algorithm.SortUtil; ]2YC7  
fRq+pUx U  
/** 0A-yQzL|  
* @author treeroot #lMC#Ld  
* @since 2006-2-2 ,_s.amL3O{  
* @version 1.0 fjY:u,5V_  
*/ %LD(S*>7  
public class MergeSort implements SortUtil.Sort{ mn*}U R  
PZO.$'L|7  
/* (non-Javadoc) %oWG"u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y&bZai8WlE  
*/ )>"pm {g2  
public void sort(int[] data) { _~*j=XRs  
int[] temp=new int[data.length]; v#`>  
mergeSort(data,temp,0,data.length-1); TK%q}bK,  
} Y88N*axDW.  
g"kET]KP"  
private void mergeSort(int[] data,int[] temp,int l,int r){ Q laoa)d#  
int mid=(l+r)/2; 4bL? V^@7  
if(l==r) return ; Z^=(9 :  
mergeSort(data,temp,l,mid); 2##mVEo.(  
mergeSort(data,temp,mid+1,r); 'Yh`B8  
for(int i=l;i<=r;i++){ yu&muCA  
temp=data; IO ]tO[P#  
} Qwve-[  
int i1=l; j5A>aj  
int i2=mid+1; (44L8)I.D  
for(int cur=l;cur<=r;cur++){ )>U"WZ'<  
if(i1==mid+1) #2$wI^O  
data[cur]=temp[i2++]; -$_FKny  
else if(i2>r) B-$zioZ  
data[cur]=temp[i1++]; wXZ9@(^  
else if(temp[i1] data[cur]=temp[i1++]; &9z&#`AY]>  
else eu~ u-}.  
data[cur]=temp[i2++]; ~%eE%5!k  
} O(v>\MV  
} B9$pG  
[_(uz,'  
} BUV4L5(  
% 4t?X  
改进后的归并排序: N U+PG`Vb  
y>#kT  
package org.rut.util.algorithm.support; \I^"^'CP  
y7+n*|H  
import org.rut.util.algorithm.SortUtil; D:?"Rf{)  
2`ERrh^i"  
/** $P#+Y,r~\  
* @author treeroot 2chT^3e  
* @since 2006-2-2 30(e6T;   
* @version 1.0 +W8#]u|  
*/ :D>flZi  
public class ImprovedMergeSort implements SortUtil.Sort { [nX{ sM%  
-;RAW1]}Y$  
private static final int THRESHOLD = 10; V:+vB "  
0"+QWh  
/* ;- Vs|X  
* (non-Javadoc) hp}rCy|01  
* {!{T,_ J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /X#OX 8gb]  
*/ I\rjw$V#  
public void sort(int[] data) { 9ao?\]&t  
int[] temp=new int[data.length]; f(K1 ,L:&7  
mergeSort(data,temp,0,data.length-1); ;ByCtVm2  
} O8rd*+  
XRyeEwA;pp  
private void mergeSort(int[] data, int[] temp, int l, int r) { zJ ;]z0O  
int i, j, k; '-G,7!.,r%  
int mid = (l + r) / 2; \,:7=  
if (l == r) = 1d$x:  
return; Et}%sdS  
if ((mid - l) >= THRESHOLD) CUjRz5L  
mergeSort(data, temp, l, mid); 4j i#Q  
else {4p7r7n'  
insertSort(data, l, mid - l + 1); N "eK9>  
if ((r - mid) > THRESHOLD) vt5>>rl  
mergeSort(data, temp, mid + 1, r); !y!s/i&P%  
else r8FAV9A  
insertSort(data, mid + 1, r - mid); 4K4u]"1  
"/UPq6  
for (i = l; i <= mid; i++) { =FFs8&PKys  
temp = data; o$*DFvk  
} CPP9=CoR37  
for (j = 1; j <= r - mid; j++) { SL^%Zh/~  
temp[r - j + 1] = data[j + mid]; ,p\*cHB9  
} ,pkzNe`F  
int a = temp[l]; `fVzY"Qv k  
int b = temp[r]; cRf;7G  
for (i = l, j = r, k = l; k <= r; k++) { U^-J_ yq  
if (a < b) { wjOqCF"  
data[k] = temp[i++]; ;[Eso p  
a = temp; qzo)\,  
} else { ?q5HAIZ`  
data[k] = temp[j--]; JKCV >k  
b = temp[j]; Vt9o8naz  
} mcQ\"9;pY  
} 6jl{^dI  
} pMp@W`i^6  
Tm~jYgJ  
/** *t={9h  
* @param data {z'Gg  
* @param l YsO`1D  
* @param i Rob: W|  
*/ aIWpgUd`  
private void insertSort(int[] data, int start, int len) { (ijO|%?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6skd>v UU  
} eMH\]A~v"  
} *\Hut'7 d  
} ~H]d9C  
} /`O'eH  
5=4-IO6W[]  
堆排序: \D[~54  
L;KLmxy#  
package org.rut.util.algorithm.support; 9@*4^Ks p  
-OfAl~ 4  
import org.rut.util.algorithm.SortUtil; [Kbna>`  
vha@YPC=  
/** A {')  
* @author treeroot I+Fr#1  
* @since 2006-2-2 \}Pr!tk!  
* @version 1.0 )9!ZkZbv_m  
*/ a$6pA@7}  
public class HeapSort implements SortUtil.Sort{ wo^1%:@/2  
^$lsmF]^  
/* (non-Javadoc) o`}8ZtD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7G_lGV_  
*/ 2L1Azx  
public void sort(int[] data) { 6(HJYa  
MaxHeap h=new MaxHeap(); 8[8U49V9(  
h.init(data); x/92],.Mz  
for(int i=0;i h.remove(); :/NP8$~@j  
System.arraycopy(h.queue,1,data,0,data.length); bHHR^*B  
} x1:1Jj:  
+OUM 4y  
private static class MaxHeap{ ^}GR!990  
H329P*P  
void init(int[] data){ yhyh\.  
this.queue=new int[data.length+1]; )#Y:Bj7H@2  
for(int i=0;i queue[++size]=data; Q@UY4gA '  
fixUp(size); q{)Q ?E  
} %E2C4UbY  
} .>( qZEF  
E95VR?nUg  
private int size=0; ]m^ECA$  
.MRLA G  
private int[] queue; iWn7vv/t  
"S&1J8D|  
public int get() { }HZ'i;~r|9  
return queue[1]; KhbbGdmfS$  
} ;{cl*EN  
'zTa]y]a  
public void remove() { 5d82Ms  
SortUtil.swap(queue,1,size--); f<3r;F7  
fixDown(1); {|@N~c+  
} Wy$Q!R=i  
file://fixdown \G1(r=fU  
private void fixDown(int k) { /M_kJe,%  
int j; !E\J`K0_e  
while ((j = k << 1) <= size) { c1_?Z  
if (j < size %26amp;%26amp; queue[j] j++; {*4Z9.2c*  
if (queue[k]>queue[j]) file://不用交换 %w6lNl  
break; 9}Zi_xK&|e  
SortUtil.swap(queue,j,k); 8m) E~6  
k = j; OB ~74}3;  
} Ga^k1TQq  
} , Onu%  
private void fixUp(int k) { F ?TmOa0  
while (k > 1) { 6~q"#94  
int j = k >> 1; H\e<fi%Q  
if (queue[j]>queue[k]) HLM"dmI   
break; = G3A}  
SortUtil.swap(queue,j,k); y|Zj M  
k = j; BRMR> ~k(  
} C/pu]%n@4  
} ^kpu9H  
&]/.=J  
} <3Hu(Jx<O  
iD9hqiX&  
} MMUw+jM4  
#Y<b'7yJ  
SortUtil: b ~FmX  
jl4rEzVu  
package org.rut.util.algorithm; bjq2XP?LL  
u@zBE? g  
import org.rut.util.algorithm.support.BubbleSort; #/`V.jXt>  
import org.rut.util.algorithm.support.HeapSort; gG=E2+=uy  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]7{-HuQ8>}  
import org.rut.util.algorithm.support.ImprovedQuickSort; x; *KRO  
import org.rut.util.algorithm.support.InsertSort; :dzam HbX9  
import org.rut.util.algorithm.support.MergeSort; ,\f!e#d  
import org.rut.util.algorithm.support.QuickSort; n8[ sl]L  
import org.rut.util.algorithm.support.SelectionSort; ".eD&oX{  
import org.rut.util.algorithm.support.ShellSort; Z*QsDS  
nJ4i[j8  
/** Qsc%qt-l  
* @author treeroot /4]M*ls  
* @since 2006-2-2 QOkPliX  
* @version 1.0 m-UI^M,@<  
*/ nqt;Ge M  
public class SortUtil { &V[m{.  
public final static int INSERT = 1; q7C>A`w  
public final static int BUBBLE = 2; 5~CHj  
public final static int SELECTION = 3; 0I4RZ.2*Y  
public final static int SHELL = 4; a="Z]JGk  
public final static int QUICK = 5; !~cTe!T  
public final static int IMPROVED_QUICK = 6; XFPWW,  
public final static int MERGE = 7; %J?;@ G)r  
public final static int IMPROVED_MERGE = 8; |?SK.1pW  
public final static int HEAP = 9; -U(T  
< Vr"  
public static void sort(int[] data) { |Gb"%5YD  
sort(data, IMPROVED_QUICK); x5k6yHn  
} % ^g BDlR^  
private static String[] name={ 3ADT Yt".  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ` IiAtS  
}; _YY:}'+  
*?K3jy{  
private static Sort[] impl=new Sort[]{ g6k@E,cI_  
new InsertSort(), YsXP$y]g-  
new BubbleSort(), z{cIG8z  
new SelectionSort(), ]n0kO&  
new ShellSort(), vW 0m%  
new QuickSort(), 6yKr5tH4  
new ImprovedQuickSort(), 6e$(-ai  
new MergeSort(), JB a:))lw  
new ImprovedMergeSort(), h&||Ql1  
new HeapSort() impzqQlZ,  
}; $6T*\(;T@A  
`itaQGLD  
public static String toString(int algorithm){ !q! =VC  
return name[algorithm-1]; RZ9vQ\X U)  
} 7E4=\vM  
eZ y)>.6Z  
public static void sort(int[] data, int algorithm) {  ;OQ{  
impl[algorithm-1].sort(data); q-3%.<LL  
} LZV  
xj iMM>|n  
public static interface Sort { !dYkvoQNn  
public void sort(int[] data); *?7Ie;)  
} DF/p{s1Y3  
l. ?R7f  
public static void swap(int[] data, int i, int j) { MVK='  
int temp = data; NA>h$N  
data = data[j]; R 28v5  
data[j] = temp; /NaI Mo 5  
} c$Js<[1  
} ?&ThMWl  
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