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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。 Ww)p&don  
插入排序: t'{IE!_  
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package org.rut.util.algorithm.support; "J (0J  
&'KJh+jJ  
import org.rut.util.algorithm.SortUtil; 6zR9(c:a~  
/** g*]/HS>e<G  
* @author treeroot ;:DDz  
* @since 2006-2-2 'h.:-1# L  
* @version 1.0 )oAxt70  
*/ INjr$'*  
public class InsertSort implements SortUtil.Sort{ l>){cI/D#  
VxA?LS`  
/* (non-Javadoc) ta+MH,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~4^~w#R  
*/ XV %DhR=  
public void sort(int[] data) { U_[<,JE  
int temp; "kS!rJ[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e !2SO*O  
} ~H4wsa39  
} ,*MA teD  
} !> 2kH  
hteAuz4H  
} w _ONy9  
='G-wX&k  
冒泡排序: }huFv*<@'  
0(|Yy/Yq  
package org.rut.util.algorithm.support; <N'v-9=2jl  
CFTw=b@  
import org.rut.util.algorithm.SortUtil; A}3dx!?7j  
fPBJ%SZ  
/** &m=73 RN  
* @author treeroot !fmbm4!a  
* @since 2006-2-2 &,8F!)[9  
* @version 1.0 D8 BmC  
*/ +oevNM  
public class BubbleSort implements SortUtil.Sort{ QCAoL.v  
6"YcM:5~  
/* (non-Javadoc) f>hA+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VS jt|F)t  
*/ G0~6A@>  
public void sort(int[] data) { E^4}l2m_  
int temp; ORx6r=zg  
for(int i=0;i for(int j=data.length-1;j>i;j--){ s C>Oyh:%!  
if(data[j] SortUtil.swap(data,j,j-1); xQ,My  
} LE}V{%)xD  
} %EH{p@nM&-  
} 6m%#cP (6K  
} S7 !;Z@  
(Cb;=:3G  
} H!P$p-*.  
o]M1$)>b +  
选择排序: ).3riR  
IhjZ{oV/@  
package org.rut.util.algorithm.support; 2!Qg1hM  
6o d^+>U  
import org.rut.util.algorithm.SortUtil; F}~qTF;H  
=1Hn<Xay0  
/** 5=_bK^Am  
* @author treeroot RJ1 @ a  
* @since 2006-2-2 cDIZkni=  
* @version 1.0 Qo~|[]GE  
*/ BUS4 T#D  
public class SelectionSort implements SortUtil.Sort { =}g-N)^  
74r$)\q  
/* %<0'xJ%%Q  
* (non-Javadoc) N 9W,p 2  
* oy-y Q YX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \q@Co42n\  
*/ sBk|KG  
public void sort(int[] data) { R-YNg  
int temp; }qT{" *SC  
for (int i = 0; i < data.length; i++) { \`;1[m  
int lowIndex = i; Du #>y!  
for (int j = data.length - 1; j > i; j--) { +rJDDIb  
if (data[j] < data[lowIndex]) { %xrldn%  
lowIndex = j; hg2Ywzfm-  
} 8]mRX~  
} -AN5LE9-  
SortUtil.swap(data,i,lowIndex); Ya4yW9*  
} ]nNn"_qh  
}  SQ&}18Z~  
:T{VCw:*  
} Gz52^O :  
`S+n,,l  
Shell排序: =QK ucLo  
RN&6z"|jR  
package org.rut.util.algorithm.support; *q"1I9zvT  
T|,/C|L  
import org.rut.util.algorithm.SortUtil; ~ mzX1[  
Id1de>:;  
/** V?)YQ B  
* @author treeroot *cZ7?  
* @since 2006-2-2 7K ~)7U  
* @version 1.0 }@"v7X $  
*/ _Wq;bKG  
public class ShellSort implements SortUtil.Sort{ SAiaC _  
wrc1N?[bn  
/* (non-Javadoc) ;l^'g}dQ^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E 6+ ooB[  
*/ znDpg{U(  
public void sort(int[] data) { yuC|_nL  
for(int i=data.length/2;i>2;i/=2){ O0;mXH  
for(int j=0;j insertSort(data,j,i); - (7oFOtg  
} K4 -_a{)/  
} "!_vQ^y  
insertSort(data,0,1); 3-oKY*jO  
} 4V;-*:  
#l h' !  
/** 1_TniR3z1  
* @param data \TYVAt] ?  
* @param j 1/,~0N9  
* @param i EI)2 c.A  
*/ QeN7~ J  
private void insertSort(int[] data, int start, int inc) { AQ0zsy  
int temp; "&{.g1i9  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8 &v)Vi-  
} _Fn`G .r<  
} Z?d][zGw  
} 8)M WC:  
>3*a&_cI=k  
} Q+/P>5O/  
'MW O3  
快速排序: :Gzp (@<@e  
GvvKM=1  
package org.rut.util.algorithm.support; k)[c!\a[i  
6y "]2UgQk  
import org.rut.util.algorithm.SortUtil; %eh.@8GL`  
HGDiwA  
/** q: X^V$`  
* @author treeroot u%6b|M@P  
* @since 2006-2-2 g7lPQ_A*  
* @version 1.0 lIZ&' z  
*/ p$ETAvD  
public class QuickSort implements SortUtil.Sort{ \j-:5M#m  
O OXP1L  
/* (non-Javadoc) jP0TyhM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |DPq~l(d  
*/ aL&9.L|1 g  
public void sort(int[] data) { 4#.Q|vyl]"  
quickSort(data,0,data.length-1); ^.  
} =q|//*t2  
private void quickSort(int[] data,int i,int j){ G{O{ p  
int pivotIndex=(i+j)/2; j,SZJ{ebXg  
file://swap xn@oNKD0  
SortUtil.swap(data,pivotIndex,j); 0P!Fci/t  
L "'d(MD  
int k=partition(data,i-1,j,data[j]); V#+F*w?&D  
SortUtil.swap(data,k,j); (i?9/8I  
if((k-i)>1) quickSort(data,i,k-1); "!fwIEG  
if((j-k)>1) quickSort(data,k+1,j); HuK Ob4g  
m8G/;V[x  
} 0LSJQ9\p  
/** &Nw|(z&$  
* @param data Vg :''!4t2  
* @param i SSyARR+;c  
* @param j f"NWv!  
* @return hy@b/Y![M  
*/ C N}0( 2n  
private int partition(int[] data, int l, int r,int pivot) { J\p-5[E  
do{ [d-Y1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1_]%,  
SortUtil.swap(data,l,r); :7JP(j2  
} PfB9 .f{  
while(l SortUtil.swap(data,l,r); d2)]6)z6  
return l; *UXa.kT@  
} R~|(]#com  
9 g- 8u+&  
} t<$J 3h/"  
W7@Vma`  
改进后的快速排序: Ts|;5ya5m  
`*`ZgTV  
package org.rut.util.algorithm.support; @v!#_%J  
=vriraV"  
import org.rut.util.algorithm.SortUtil; oIMS >&  
57]La^#  
/** L/%{,7l<^?  
* @author treeroot ipt]qJFd  
* @since 2006-2-2 'A\0^EvVv  
* @version 1.0 rOj(THoc{  
*/ Dkh=(+> <  
public class ImprovedQuickSort implements SortUtil.Sort { w>}n1Nc$G  
'<*%<J{(  
private static int MAX_STACK_SIZE=4096; eb6y-TwY  
private static int THRESHOLD=10; IG2z3(j  
/* (non-Javadoc) 0ia-D`^me  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %nE%^Enw  
*/ <Lt"e8Z>x  
public void sort(int[] data) { fA[T5<66  
int[] stack=new int[MAX_STACK_SIZE]; Z:V<P,N  
(v:8p!QN  
int top=-1; :S!!J*0  
int pivot; Jw^my4  
int pivotIndex,l,r; T!pZj_ h=  
N pQOLX/<?  
stack[++top]=0; x&m(h1h  
stack[++top]=data.length-1; Gl6:2  
!YlEXaS  
while(top>0){ "gDk?w  
int j=stack[top--]; bxBndxl  
int i=stack[top--]; F[F  NtZ  
S&k/Pc  
pivotIndex=(i+j)/2; 0AoWw-H6V  
pivot=data[pivotIndex]; lL5*l,)To  
qzLD  
SortUtil.swap(data,pivotIndex,j); U2~|AkL  
hewc5vrL  
file://partition -lq`EB +  
l=i-1; }g|9P SbJ  
r=j; 9(_n8br1  
do{ g:p` .KuB  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); v:>sS_^  
SortUtil.swap(data,l,r); z8)&ekG  
} |<y1<O>F  
while(l SortUtil.swap(data,l,r); /Bk`3~]E>  
SortUtil.swap(data,l,j); jMX|1b  
02(Ob  
if((l-i)>THRESHOLD){ Rt5Xqz\6i  
stack[++top]=i; D4$"02"  
stack[++top]=l-1; iU=:YPE+ .  
} LfCgvq6/pO  
if((j-l)>THRESHOLD){ KF!d?  
stack[++top]=l+1; AXnKhYlu  
stack[++top]=j; :`<MlX  
} L}_VT J  
h7m$P^=U  
} |Vu`-L'Jz  
file://new InsertSort().sort(data); ^% Ln@!P  
insertSort(data); _(8N*q*w  
} }/IP\1bG  
/** Z7?\ >4V  
* @param data lYr4gFOs  
*/ J@IKXhb7_  
private void insertSort(int[] data) { gd]_OY7L  
int temp; ' 8Q }pp`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9o]!D,u8=5  
} p6Ia)!xOGF  
} ld5+/"$  
} X]\; f  
mT;   
} 8k.#4}fP  
Q#&6J=}  
归并排序: g"g3|$#Ej|  
wARd^Iw  
package org.rut.util.algorithm.support; X2P8Zq=%a  
^$rqyWZYp  
import org.rut.util.algorithm.SortUtil; O>" |5 wj  
bZj5qjl`x  
/** V,?])=Ax  
* @author treeroot 'mF&`BN}b  
* @since 2006-2-2 U0N6\+  
* @version 1.0 3b`#)y^y?%  
*/ "=$uv  
public class MergeSort implements SortUtil.Sort{ Ty3.u9c4  
KsqS{VVCh  
/* (non-Javadoc) &7{yk$]*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rV*Ri~Vx  
*/ p>+Q6o9O  
public void sort(int[] data) { Oz "_KMz  
int[] temp=new int[data.length]; A+fXt`YNM  
mergeSort(data,temp,0,data.length-1); fEGnI\  
} I y5)SZ'  
QVl"l'e8  
private void mergeSort(int[] data,int[] temp,int l,int r){  KcpQ[6\  
int mid=(l+r)/2; (SA^> r  
if(l==r) return ; $"6Gv  
mergeSort(data,temp,l,mid); &,\my-4c>  
mergeSort(data,temp,mid+1,r); ajf(Ii\/  
for(int i=l;i<=r;i++){ `@So6%3Y|  
temp=data; [?XP[h gd  
} iRV=I,  
int i1=l; ZJ/K MW  
int i2=mid+1; yEkwdx5!(  
for(int cur=l;cur<=r;cur++){ @R`Ao9n9V  
if(i1==mid+1) /U0,%  
data[cur]=temp[i2++]; Q0g^%  
else if(i2>r) E0u&hBd3_  
data[cur]=temp[i1++]; 1`~.!yd8(  
else if(temp[i1] data[cur]=temp[i1++]; on1B~?*D  
else &WS'Me  
data[cur]=temp[i2++]; D&DbxTi  
}  | 1a}p  
} Kv ajk~  
,=: -&~?  
} *0_Q0SeE,o  
O]oH}#5b  
改进后的归并排序: ~CHVU3  
+.-mqtM  
package org.rut.util.algorithm.support; ^3QJv{)Q  
yIWgC[  
import org.rut.util.algorithm.SortUtil; lx> ."rW  
j?\z5i""f  
/** ss`Sl$  
* @author treeroot Sf2xI'  
* @since 2006-2-2 bzECNi5^  
* @version 1.0 }-T,cA_H|  
*/ &7r a  
public class ImprovedMergeSort implements SortUtil.Sort { @]Ac >&  
\Qf2:[-V0  
private static final int THRESHOLD = 10; bYr*rEcA  
.X:,]of  
/* g|tclBx  
* (non-Javadoc) $KP&#;9  
* dZ4c!3'F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z,V<&9a;  
*/ d-z[=1m  
public void sort(int[] data) { %8xKBL]J  
int[] temp=new int[data.length]; Q(x/&]7=V  
mergeSort(data,temp,0,data.length-1); x~](d8*=  
} 8d&%H,  
D2RvFlAXu  
private void mergeSort(int[] data, int[] temp, int l, int r) { $weC '-n@  
int i, j, k; M C y~~DL  
int mid = (l + r) / 2; Of}C.N8  
if (l == r) *&hbfsP:  
return; ,;f5OUl?[  
if ((mid - l) >= THRESHOLD) )4> 7X)j>  
mergeSort(data, temp, l, mid); (O& HCT|  
else :#D~j]pP  
insertSort(data, l, mid - l + 1); as@? Kv  
if ((r - mid) > THRESHOLD) by\Sq}  
mergeSort(data, temp, mid + 1, r); {BgJ=0g?  
else 8\jsGN.$JZ  
insertSort(data, mid + 1, r - mid); l hST%3Ld  
;d FJqo82  
for (i = l; i <= mid; i++) { /QQjb4S}  
temp = data; ?# RhHD  
} }'K-1:  
for (j = 1; j <= r - mid; j++) {  GInw7  
temp[r - j + 1] = data[j + mid]; 5Vai0Qfcu:  
} 8s %YudW  
int a = temp[l]; nj1PR`AE  
int b = temp[r]; %/qwqo`Q  
for (i = l, j = r, k = l; k <= r; k++) { /U`p|M;  
if (a < b) { E()%IC/R  
data[k] = temp[i++]; }$ Kd-cj+  
a = temp; U*,\UF  
} else { '8(UiB5d  
data[k] = temp[j--]; X#zp,7j?  
b = temp[j]; y>)c?9X  
} :6/$/`I0W  
} HJP~ lg  
} f .$*9Fkw  
>?6HUUQ  
/** F!p;]B  
* @param data H!>>|6OPF  
* @param l B#cN'1c  
* @param i O%haaL\  
*/ [B+:)i  
private void insertSort(int[] data, int start, int len) { {'z$5<|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^Ai QNL}  
} &I%E8E  
} \A)Pcc}7  
} SpYmgL?wJ  
} MSRk|0Mcr  
*adznd  
堆排序: z;ku*IV  
sZ;Gb^{Z  
package org.rut.util.algorithm.support; )dh`aQ%N "  
_O ;4>  
import org.rut.util.algorithm.SortUtil; <0qhc$M  
|~PaCw8-ge  
/** 29m$S7[  
* @author treeroot 7B\Q5fLQ  
* @since 2006-2-2 %(W8W Lz}  
* @version 1.0 +S`cUn7  
*/ M'F<1(  
public class HeapSort implements SortUtil.Sort{ Y=g]\%-PB  
/Ov1eQBNG  
/* (non-Javadoc) zqBzataR:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &`m$Zzl;  
*/ WW>m`RU`  
public void sort(int[] data) { V!>j: "  
MaxHeap h=new MaxHeap(); ]>Gi_20*.  
h.init(data); S#r|?GYua  
for(int i=0;i h.remove(); =LKM)d=1  
System.arraycopy(h.queue,1,data,0,data.length); y)a)VvU":  
} GN:|b2 "  
FSAX , Y  
private static class MaxHeap{  m l@% H  
*'-t_F';  
void init(int[] data){ N u\<Xr8  
this.queue=new int[data.length+1]; ByO?qft>u  
for(int i=0;i queue[++size]=data; 9%"`9j~H>  
fixUp(size); k7;i^$@c  
} pnyu&@e  
} 9+xO2n  
C&R U  
private int size=0; +8x_f0 <  
V aG Qre  
private int[] queue; g_N^Y  
BG= J8  
public int get() { k_ywwkG9lU  
return queue[1]; ';My"/ Z-  
} ZoSyc--Bv  
ZS;V?]\(  
public void remove() { 4d}=g]P  
SortUtil.swap(queue,1,size--); yT5OFD|T  
fixDown(1); ?6{g7S%  
} 9V[}#(f$  
file://fixdown ]!@=2kG4  
private void fixDown(int k) { iyd$_CJz  
int j; LME&qKe5  
while ((j = k << 1) <= size) { 1q3"qY H  
if (j < size %26amp;%26amp; queue[j] j++; =QbOvIq  
if (queue[k]>queue[j]) file://不用交换 f1+  
break; rpDBKo  
SortUtil.swap(queue,j,k); Lo#G. s|  
k = j; gx',K1T  
} i$Kx@,O8t  
} bt_c$TN  
private void fixUp(int k) { 19c_=$mV  
while (k > 1) { #;W4$ q  
int j = k >> 1; v'b%m8  
if (queue[j]>queue[k]) UcOP 0_/  
break; l U4 I*  
SortUtil.swap(queue,j,k); D7JrGaF{  
k = j; _ SOwiz  
} oz)4YBf  
} WZPj?ou`G  
V,0$mBYa  
} qsbV)c  
D4|Ajeo;1  
} ]+3M\ ib  
PnInsf%;  
SortUtil: !4=_l6kg~+  
JGTsVa2  
package org.rut.util.algorithm; Rvx 7}ZL!  
*<y9.\z Y<  
import org.rut.util.algorithm.support.BubbleSort; j/=Tj'S?D  
import org.rut.util.algorithm.support.HeapSort; /|P{t{^WM  
import org.rut.util.algorithm.support.ImprovedMergeSort; k{{3nenAG  
import org.rut.util.algorithm.support.ImprovedQuickSort; l9="ccM  
import org.rut.util.algorithm.support.InsertSort; 6w;`A9G[YI  
import org.rut.util.algorithm.support.MergeSort; @6tczU}ak  
import org.rut.util.algorithm.support.QuickSort; gh\u@#$8  
import org.rut.util.algorithm.support.SelectionSort; * jWh4F,  
import org.rut.util.algorithm.support.ShellSort; s(5hFuyg  
>yXhP6  
/** <N$Hb2b  
* @author treeroot a^@.C5  
* @since 2006-2-2 d=%NFCIV  
* @version 1.0 u/6if9B  
*/ }F!Uu KR  
public class SortUtil { OG?7( UJ  
public final static int INSERT = 1; ,52 IR[I<T  
public final static int BUBBLE = 2; l5Ko9CG  
public final static int SELECTION = 3; Ao}<a1f  
public final static int SHELL = 4; gN:F50   
public final static int QUICK = 5; LO)!Fj4|  
public final static int IMPROVED_QUICK = 6; [~ 2m*Q  
public final static int MERGE = 7; D6Aa5&rO+  
public final static int IMPROVED_MERGE = 8; -d#08\  
public final static int HEAP = 9; La9}JvQoX  
-V}xvSVg  
public static void sort(int[] data) { BlU&=;#r5>  
sort(data, IMPROVED_QUICK); YX-j|m|  
} !Md6Lh%-w  
private static String[] name={ ox&? `DO  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (?R!y -  
}; QY&c=bWAX"  
-sKtT 9o  
private static Sort[] impl=new Sort[]{ JN+7o h]u  
new InsertSort(), >| ,`E  
new BubbleSort(), [>54?4{|.  
new SelectionSort(), `14@dk  
new ShellSort(), I AwS39B  
new QuickSort(), ' *a}*(0OA  
new ImprovedQuickSort(), Z^%a 1>`  
new MergeSort(), .#SgU<Wq  
new ImprovedMergeSort(), DMG'8\5C  
new HeapSort() jIe /X]  
}; |6bvUFr  
NWFh<  
public static String toString(int algorithm){ b)KEB9w  
return name[algorithm-1]; xcWR#z{z  
} eg}g} a  
>\<eR]12  
public static void sort(int[] data, int algorithm) { iD|~$<9o  
impl[algorithm-1].sort(data); Y=G`~2Pr=  
} T[1iZ  
HYGd :SeH  
public static interface Sort { aHuMm&  
public void sort(int[] data); qm><}N7f  
} l9Ol|Cb&  
 EG`AkWy  
public static void swap(int[] data, int i, int j) { b7\>=  
int temp = data; bH/4f93Nb  
data = data[j]; uBt ]4d*  
data[j] = temp; u3O@ccJ;  
} 83Rs1}*  
} J+IItO4%  
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