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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。 I;g>r8N-Bu  
插入排序: "T4buTXJ  
*De}3-e1b  
package org.rut.util.algorithm.support; 5{Oq* |  
wR%F>[ 6.{  
import org.rut.util.algorithm.SortUtil; DCheG7lo{  
/** s$wIL//=  
* @author treeroot }HKt{k&$  
* @since 2006-2-2 Mjj5~by:  
* @version 1.0 Pl\r|gS;  
*/ 5@-[[ $dk  
public class InsertSort implements SortUtil.Sort{ >3qfo2K 0  
csd~)a nb  
/* (non-Javadoc) GD -cP5$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zn{Y+ce7d  
*/ {u (( y D  
public void sort(int[] data) { TCLXO0  
int temp; Pea2ENe3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @km@\w  
} 1va~.;/rG  
} :AYhBhitC  
} Rh :|ij>B  
"2=v:\~=  
} ~#];&WE  
B~h3naSe  
冒泡排序: _g2"D[I%  
*mjPNp'3{m  
package org.rut.util.algorithm.support; N!~5S`  
dQQ!QbI(.  
import org.rut.util.algorithm.SortUtil; 6BdK)s  
) -^(Su(!  
/** @j`gx M_-O  
* @author treeroot ?e#bq]  
* @since 2006-2-2 =3dR-3  
* @version 1.0 *w`_(X f  
*/ s|[CvjL#0  
public class BubbleSort implements SortUtil.Sort{ w\zNn4B})A  
oiTSpd-  
/* (non-Javadoc) EpU}~vC9C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Aryp!oW  
*/ ]J^/`gc  
public void sort(int[] data) { + usB$=kJ  
int temp; {XEX0|TZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ P\ia ?9  
if(data[j] SortUtil.swap(data,j,j-1);  &Sdf0"  
} r]=Z :  
} cw/E?0MWb  
} ufn% sA  
}  Eyq4w  
r7jh)Q;BbR  
} QJF_ "  
,}:}"cl  
选择排序: 0t(2^*I?>  
n/ZX$?tKAK  
package org.rut.util.algorithm.support; _A~>?gJ;,  
f=IF_|@^S  
import org.rut.util.algorithm.SortUtil; <)a7Nrc\T  
x8o/m$[,=u  
/** ?3y>K!D(A  
* @author treeroot ]NyN@9u@(  
* @since 2006-2-2  c+upoM  
* @version 1.0 MG,)|XpyWJ  
*/ ZV ;~IaBL  
public class SelectionSort implements SortUtil.Sort { `d}t?qWS;F  
#H]c/  
/* 8/<+p? 3p>  
* (non-Javadoc) va2FgW`Bd+  
* ,*.qa0E#W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &,tj.?NCn  
*/ DEW;0ic  
public void sort(int[] data) { Q%:Z&lg y  
int temp; - VdCj%r>  
for (int i = 0; i < data.length; i++) { AfpC >>=@  
int lowIndex = i; NXMZTZpB7  
for (int j = data.length - 1; j > i; j--) { O$7cN\Z  
if (data[j] < data[lowIndex]) { > zfFvx_q  
lowIndex = j; 3/ '5#$  
} .sSbU^U  
} pv,z$3Q  
SortUtil.swap(data,i,lowIndex); *RmD%[f  
} K SJ Ko  
} YQ>O6:%  
H6hhU'Kxf8  
} E> N[  
>mj WC) U  
Shell排序: d*dPi^JjC  
7l4}b^>/`  
package org.rut.util.algorithm.support; n)PqA*  
88VI _<  
import org.rut.util.algorithm.SortUtil; /*(&Dmt>  
(QS 0  
/** {s0!hp  
* @author treeroot Ln8r~[tVE<  
* @since 2006-2-2 ]sI\.a  
* @version 1.0 u{cb[M  
*/ xYY^tZIV  
public class ShellSort implements SortUtil.Sort{ '=(D7F;  
8Oa+,?<0x  
/* (non-Javadoc) @<yYMo7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .I]EP-  
*/ %<|cWYM="z  
public void sort(int[] data) { s_3a#I  
for(int i=data.length/2;i>2;i/=2){ !p Q*m`Xo  
for(int j=0;j insertSort(data,j,i); 9&zQ 5L>  
} KB {IWu  
} Wf~PP;  
insertSort(data,0,1); VAp 1{  
} uANpqT}!  
CIVV"p`}  
/**  &\ K  
* @param data ?:6w6GwAA  
* @param j Bkg./iP5x  
* @param i -b)3+#f  
*/ +R_s(2vz  
private void insertSort(int[] data, int start, int inc) { _zkTx7H  
int temp; *xN?5u%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);  +F~B"a  
} 1.5R`vKn]  
} :`c@&WF8  
} f?TS#jG4}  
})j N 8px  
} @ V_i%=go  
|d,bo/:  
快速排序: n(.L=VuXn  
\ 0Ba?  
package org.rut.util.algorithm.support; [<sN "  
fNV-_^,R9  
import org.rut.util.algorithm.SortUtil; *;l[|  
7=s7dYlu  
/** -"I9`  
* @author treeroot vGOO"r(xL  
* @since 2006-2-2 X<H{  
* @version 1.0 DT_%Rz~<  
*/ @+a}O  
public class QuickSort implements SortUtil.Sort{ -;Te+E_  
)x35  
/* (non-Javadoc) u $B24Cy.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :m36{#  
*/ !$#5E1:\  
public void sort(int[] data) { >>cL"m  
quickSort(data,0,data.length-1); n]t3d  
} )$K\:w>  
private void quickSort(int[] data,int i,int j){ v3(0Mu0J  
int pivotIndex=(i+j)/2; ZiRCiQ/?  
file://swap k"6v& O  
SortUtil.swap(data,pivotIndex,j); |E;+j\   
0U !&|i\  
int k=partition(data,i-1,j,data[j]); -j@IDd7  
SortUtil.swap(data,k,j); ^])s\a$  
if((k-i)>1) quickSort(data,i,k-1); ""m/?TZq'  
if((j-k)>1) quickSort(data,k+1,j); 0<##8m@F8  
' Er\ 68  
} wh!8\9{g  
/** ZZ/k7(8  
* @param data Y~w1_>b  
* @param i :  @$5M  
* @param j 9Q1w$t~Y  
* @return N,.awA{  
*/ .HRd6O;  
private int partition(int[] data, int l, int r,int pivot) { iBmvy 7S?  
do{ B5+$ VQ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9i D&y)$"  
SortUtil.swap(data,l,r); v^;vH$B  
} ..w$p-1  
while(l SortUtil.swap(data,l,r); " t?44[  
return l; Hz=s)6$ey  
} *?VB/yO=0  
~6+Um_A_L  
} QU(Lv(/O  
b`ksTO`}x  
改进后的快速排序: HBs 6:[q  
qIB2eCXw  
package org.rut.util.algorithm.support; ,1]VY/  
;9q$eK%d  
import org.rut.util.algorithm.SortUtil; *1T~ruNqa  
)<Mo.  
/** r%>EiHpCU  
* @author treeroot vu&ny&=`  
* @since 2006-2-2 [^XD @  
* @version 1.0 c` N_MP  
*/ G_5w5dbG  
public class ImprovedQuickSort implements SortUtil.Sort { T!Lv%i*|Y  
[&l+Ve(  
private static int MAX_STACK_SIZE=4096; 4q(,uk&R[  
private static int THRESHOLD=10; @Y<fj^]k  
/* (non-Javadoc) }:[MSUm5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O&}R  
*/ rDu?XJA  
public void sort(int[] data) { KuEM~Q=  
int[] stack=new int[MAX_STACK_SIZE]; ggpa !R  
l@]Fzl  
int top=-1; 19RbIG/X  
int pivot; b@sq}8YD|z  
int pivotIndex,l,r; \Ym!5,^o  
AP8J28I  
stack[++top]=0; 6j!a*u:}"  
stack[++top]=data.length-1; ;iJ}[HUo  
ywB0 D`s'  
while(top>0){ h 0)oQrY  
int j=stack[top--]; NRk^Z)  
int i=stack[top--]; O;T)u4Q&3  
%eGD1.R  
pivotIndex=(i+j)/2; R/ x-$VJ  
pivot=data[pivotIndex]; i8DYC=r  
uax kGEXr  
SortUtil.swap(data,pivotIndex,j); j 20m Z  
) q/brCq  
file://partition xK4E+^ b  
l=i-1; t}MT<Jj  
r=j; B B^81{A  
do{ SRU#Y8Xv|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1v<uA9A%[  
SortUtil.swap(data,l,r); W .Al\!Gi  
} V8b^{}nxt  
while(l SortUtil.swap(data,l,r); 1^[]#N-Bu  
SortUtil.swap(data,l,j); =/\l=*  
*OHjw;xm+  
if((l-i)>THRESHOLD){ &(jt|?{  
stack[++top]=i; zy~*~;6tW  
stack[++top]=l-1; ^K 9jJS9K  
} iR8;^C.aT  
if((j-l)>THRESHOLD){ Vg mYm~y'  
stack[++top]=l+1; buWF6LFC  
stack[++top]=j; xsrdHP1  
} 2uMSeSx$  
o=F!&]+  
} <l>L8{-3  
file://new InsertSort().sort(data); E/D@;Ym18  
insertSort(data); 3wfJ!z-E8  
} U.<ad  
/** c:s[vghH^#  
* @param data 6 \ %#=GG  
*/ ZW 5FL-I  
private void insertSort(int[] data) { nE :Wl  
int temp; =,08D^xY  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Tc|+:Usy  
} %;J$ h^  
} N ]GF>kf:  
} cCIs~*D  
dbF9%I@  
} 5j _[z|W2  
J`wx72/-ZW  
归并排序: U;gy4rj  
k_Lv\'Ok  
package org.rut.util.algorithm.support; \tdYTb.  
'[bw7T  
import org.rut.util.algorithm.SortUtil; rKl  
:z$+leNH\  
/** 8P&z@E{y  
* @author treeroot -&QpQ7q1  
* @since 2006-2-2 NIC.c3  
* @version 1.0 9D yy&$s  
*/ q@Zeu\T,*#  
public class MergeSort implements SortUtil.Sort{ nzU0=w}V  
1W9uWkk_d  
/* (non-Javadoc) 9FF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^a#W|-:  
*/ 4hn' b[  
public void sort(int[] data) { RVpo,;:  
int[] temp=new int[data.length]; C4|79UG>s  
mergeSort(data,temp,0,data.length-1); j"&Oa&SH  
} /EL3Tt  
?Uhjyi  
private void mergeSort(int[] data,int[] temp,int l,int r){ E clsOBg  
int mid=(l+r)/2; 3p'(E\VJ  
if(l==r) return ; PW9tZx#  
mergeSort(data,temp,l,mid); lW]&a"1$  
mergeSort(data,temp,mid+1,r); ZZ>(o d!B  
for(int i=l;i<=r;i++){ <S0gIg`)  
temp=data; vQ{mEaH  
} $@[Mo   
int i1=l; R5<:3tk=X  
int i2=mid+1; |lVi* 4za%  
for(int cur=l;cur<=r;cur++){ vnX~OVz2  
if(i1==mid+1) 8=mx5Gwz-  
data[cur]=temp[i2++]; Nm3CeU  
else if(i2>r) \r &(l1R  
data[cur]=temp[i1++]; 'tVe#oI  
else if(temp[i1] data[cur]=temp[i1++]; Wa%p+(\<uB  
else X C '|  
data[cur]=temp[i2++]; <h`}I3Ao  
} =z}M(<G  
} T`Xz*\}Zb  
>~T2MlRux  
} MnptC 1N  
,4(m.P10  
改进后的归并排序: WX $AOnEv  
?nf4K/IjZ!  
package org.rut.util.algorithm.support; }/7rA)_  
KoFWI_(b  
import org.rut.util.algorithm.SortUtil; YRj"]= 5N  
m .^WSy  
/** ~vfPsaRh  
* @author treeroot M7neOQHq  
* @since 2006-2-2 ket"fXqJX  
* @version 1.0 U#4>GO;A  
*/ a!;K+wL >  
public class ImprovedMergeSort implements SortUtil.Sort { 1c$c e+n~  
AHLXmQl  
private static final int THRESHOLD = 10; '8|joj>G=  
f5.Be%  
/* Vv>hr+e  
* (non-Javadoc) zBqNE`  
* t>"|~T$9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8ya|eJ]/L  
*/ NHzVA*f  
public void sort(int[] data) { YKa9]Q  
int[] temp=new int[data.length]; 4o( Q+6m  
mergeSort(data,temp,0,data.length-1); +qyx3c+  
} vz)zl2F5sY  
~&+8m=   
private void mergeSort(int[] data, int[] temp, int l, int r) { 4TaHS!9  
int i, j, k; szy2"~hm  
int mid = (l + r) / 2; Kp/l2?J"  
if (l == r) {JW_ZJx  
return; 9 NqZ&S  
if ((mid - l) >= THRESHOLD) 4aG}ex-s|  
mergeSort(data, temp, l, mid); w-``kID  
else Oi~.z@@  
insertSort(data, l, mid - l + 1); !Ee&e~"  
if ((r - mid) > THRESHOLD) ~gOdK-SV*  
mergeSort(data, temp, mid + 1, r); 7:OF>**  
else }9L;|ul6  
insertSort(data, mid + 1, r - mid); hj3wxH.}  
iD:T KB_r  
for (i = l; i <= mid; i++) { 8{p#Nl?U1  
temp = data; kT&GsR/  
} ?O/!pUAu  
for (j = 1; j <= r - mid; j++) { /Fp@j/50  
temp[r - j + 1] = data[j + mid]; +< c(;Ucl?  
} #vT~D>zj  
int a = temp[l]; R"e533  
int b = temp[r]; ;x4yidb6  
for (i = l, j = r, k = l; k <= r; k++) { Njs'v;-K  
if (a < b) { *0%G`Q  
data[k] = temp[i++]; nsi&r  
a = temp; X1%_a.=VF  
} else { c)17[9"  
data[k] = temp[j--]; R9%"Kxm  
b = temp[j]; N1'$;9 c  
} '6Yx03t  
} us^J! s7  
} c nV2}U/\  
'_o(I  
/** < #7j~<  
* @param data 1zY" Uxp  
* @param l q]m$%>  
* @param i Iyt.`z  
*/ !Bb^M3iA  
private void insertSort(int[] data, int start, int len) { ngH_p>  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); S{qsq\X  
} r1|;V~ a$~  
} bcFZ ~B  
} THnZbh4#)  
} P64< O 5l/  
(Bu-o((N@0  
堆排序: i8` 0-  
stlkt>9  
package org.rut.util.algorithm.support; DX8pd5 U  
-&r A<j  
import org.rut.util.algorithm.SortUtil; XE : JL_  
+L#Q3}=s  
/** Bfr$&?j#  
* @author treeroot g}*F"k4j  
* @since 2006-2-2 Z<$ y)bf  
* @version 1.0 (hIy31Pf  
*/ 'E1m-kJz  
public class HeapSort implements SortUtil.Sort{ a &tl@y1  
-l q,~`v  
/* (non-Javadoc) {us"=JJVN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lNqF@eCT9  
*/ <qCfw>%2F  
public void sort(int[] data) { 3[iHe+U(  
MaxHeap h=new MaxHeap(); ~_"/\; 1  
h.init(data); mO^vKq4r.  
for(int i=0;i h.remove(); ~Z x_"  
System.arraycopy(h.queue,1,data,0,data.length); 1WLaJ%Fv  
} of?'FrU  
33b 3v\N  
private static class MaxHeap{ BW&)Zz  
_.3O(?p,  
void init(int[] data){ 5KwT(R o  
this.queue=new int[data.length+1]; %8T"h  
for(int i=0;i queue[++size]=data; !Ytr4DtM  
fixUp(size); dO\irv)  
} %jmL#IN)  
} >^%TY^7n  
%PxJnMb?  
private int size=0; @wOX</_g  
CqbPUcK  
private int[] queue; OqA#4h4^  
OG}m+K&<  
public int get() { :<>=,`vQD  
return queue[1]; ~> |o3&G{  
} TTzvH;S  
O{nM yB  
public void remove() { I]Jz[{~1  
SortUtil.swap(queue,1,size--); D]$X@2A  
fixDown(1); o"@GYc["  
} t5jZ8&M5]  
file://fixdown fkK42*U@r  
private void fixDown(int k) { \Dr?}D  
int j; 4Rev7Mc  
while ((j = k << 1) <= size) { h;2n2.Q  
if (j < size %26amp;%26amp; queue[j] j++; A>W8^|l6+-  
if (queue[k]>queue[j]) file://不用交换 p1(<F_Kta  
break; rP7f~"L  
SortUtil.swap(queue,j,k); @b"J FB|  
k = j; h[I~D`q)v  
} *S=zJyAO  
} O #S27.  
private void fixUp(int k) { gN/6%,H}  
while (k > 1) { 8.4+4Vxh   
int j = k >> 1; \*k}RKDwT  
if (queue[j]>queue[k]) eNw9"X}g  
break; @XFy^?  
SortUtil.swap(queue,j,k); r__Y{&IO  
k = j; =dT sGNz  
} gl~>MasV&  
} .l(t\BfE~  
Ud[Zv?tA:  
} "]0sR  
a}MSA/K(  
} ^+zhzfJ  
6+Wkcr h  
SortUtil: |] 8Hh>  
Y1Qg|U o  
package org.rut.util.algorithm; _0(Bx?[h  
Pf?y!d K<  
import org.rut.util.algorithm.support.BubbleSort; ^&6'FE  
import org.rut.util.algorithm.support.HeapSort; \<K@t=/ 6  
import org.rut.util.algorithm.support.ImprovedMergeSort; UN6Du\)]d  
import org.rut.util.algorithm.support.ImprovedQuickSort; p?,:  
import org.rut.util.algorithm.support.InsertSort; R#UcwX}o  
import org.rut.util.algorithm.support.MergeSort; fd} U l  
import org.rut.util.algorithm.support.QuickSort; |T@\ -8Ok  
import org.rut.util.algorithm.support.SelectionSort; (:2,Rr1"  
import org.rut.util.algorithm.support.ShellSort; `cBV+00YS  
m?Qr)F_M  
/** 3>t^Xu~  
* @author treeroot ME%W,B.|"s  
* @since 2006-2-2 jk'.Gz  
* @version 1.0 :;(zA_-  
*/ 46cd5SLK  
public class SortUtil { _mJnhT3  
public final static int INSERT = 1; DHlCus=ic  
public final static int BUBBLE = 2; i-`n5,  
public final static int SELECTION = 3; R<jt$--H  
public final static int SHELL = 4; }+4^ZbX+:  
public final static int QUICK = 5; <Fa]k'<^)  
public final static int IMPROVED_QUICK = 6; io{uN/!X_J  
public final static int MERGE = 7; ZW0gd7Wh  
public final static int IMPROVED_MERGE = 8; 43 h0i-%1  
public final static int HEAP = 9; xVn"xk  
qvH7otA  
public static void sort(int[] data) { U*s QYt<?g  
sort(data, IMPROVED_QUICK); >u:t2DxE  
} mgxoM|n6  
private static String[] name={ ufekhj  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7jL3mI;n%;  
}; 3j iSvrfI  
xF4>G0  
private static Sort[] impl=new Sort[]{ lSzLR~=Au  
new InsertSort(), `Z:5E  
new BubbleSort(), [spJ%AhV  
new SelectionSort(), L| uoFG{  
new ShellSort(), =6sL}$  
new QuickSort(), Pgg\(D#X`  
new ImprovedQuickSort(), ub0uxvz  
new MergeSort(), gI SP .  
new ImprovedMergeSort(), >5Rcj(-&l  
new HeapSort() XJG "Zr9  
}; RN3-:Zd_X  
XH?}0D(  
public static String toString(int algorithm){ 4G4[IA u_  
return name[algorithm-1]; :7w^2/ZGo  
} " tUS>c/  
l12_&o"C~  
public static void sort(int[] data, int algorithm) { {T0f]]}Q  
impl[algorithm-1].sort(data); z"@yE*6  
} IP]"D"  
[8o!X)  
public static interface Sort { xA-u%Vf7@  
public void sort(int[] data); nf7l}^/UE  
} eKq`t.*Ft  
QKAo}1Pq  
public static void swap(int[] data, int i, int j) { dBKceL v  
int temp = data; zIyMq3  
data = data[j]; 5ZRO{rf  
data[j] = temp; _'yN4>=6u  
} IU8/B+hM~  
} xsPE UK&g  
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