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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。 7~I*u6zY  
插入排序: \Zgc [F  
%$*WdK#  
package org.rut.util.algorithm.support; }3TTtd7  
$!ATj`}kb  
import org.rut.util.algorithm.SortUtil; }#<mK3MBe  
/** nj (\+l5  
* @author treeroot # h/#h\  
* @since 2006-2-2 %aB RL6  
* @version 1.0 jY+u OH  
*/ @~+W  
public class InsertSort implements SortUtil.Sort{ QyEGK  
%0gcNk"=  
/* (non-Javadoc) QF74'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S=@bb$4-T  
*/ TOx >Z  
public void sort(int[] data) { }<9IH%sgF  
int temp; ] oMtqkiR  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XH`W(  
}  n$u@v(I  
} Bs!F |x(  
} mWP1mc:M(  
uE]Z,`e  
} <Rb[0E$  
&<>NP?j}  
冒泡排序: Dga;GYx  
(X3}&aLF  
package org.rut.util.algorithm.support; 11g_!X -g@  
~ubcD6f  
import org.rut.util.algorithm.SortUtil; v.q`1D1=t  
"T4buTXJ  
/** |lG7/\A  
* @author treeroot /7CV7=^d,  
* @since 2006-2-2 EW~M,+?  
* @version 1.0 c]+uj q  
*/ ?nCo?A  
public class BubbleSort implements SortUtil.Sort{ ^D5+ S`V  
tZL {;@  
/* (non-Javadoc) Oj,v88=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f =MP1q[  
*/ O,[9E  
public void sort(int[] data) { >oGs0mej  
int temp; .ED8b5t|  
for(int i=0;i for(int j=data.length-1;j>i;j--){ A?+0Ce&qL  
if(data[j] SortUtil.swap(data,j,j-1); `bJ?8~ 8 *  
} k E},>+W+  
} +}eH,  
} k5@PZFV  
} h0oe'Xov  
b9Mp@I7Q-  
} r^v1_u, 1I  
crbph.0  
选择排序: /=K(5Xd  
G&z^AV  
package org.rut.util.algorithm.support; q\n,/#'i~  
kc7,F2=F  
import org.rut.util.algorithm.SortUtil; Kk\TW1w3  
f6])M)  
/** 8svN*`[  
* @author treeroot oB$c-!&  
* @since 2006-2-2 L:_GpZ_  
* @version 1.0 m FgrT  
*/ Z'!i"Jzq|{  
public class SelectionSort implements SortUtil.Sort { ?_t_rF(?6  
rT"3^,,  
/* kQw%Wpuq[/  
* (non-Javadoc) xS+!/pBf"Y  
* 9q]n &5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k4-S:kVo  
*/ ;W?mQUo:P8  
public void sort(int[] data) { ( &!RX.i  
int temp; Ial"nV0>0  
for (int i = 0; i < data.length; i++) { wM1&_%N  
int lowIndex = i; <f9a%`d  
for (int j = data.length - 1; j > i; j--) { [C`LKA$t  
if (data[j] < data[lowIndex]) { <]f{X<ef  
lowIndex = j; 7tP qez#  
} qORL 7?{  
} Lyq[gQjr  
SortUtil.swap(data,i,lowIndex);  Eyq4w  
} ~$jRn(2  
} H{4_,2h =m  
:SD#>eD0  
} =eyPo(B  
g-4j1yJV<  
Shell排序: JI[{n~bhGD  
M)"'Q6ck=  
package org.rut.util.algorithm.support; @gnLY  
jR2^n`D  
import org.rut.util.algorithm.SortUtil; O~#A )d6  
HV=P! v6  
/** _-|+k  
* @author treeroot & d_2WQ}  
* @since 2006-2-2 L]* 5cH  
* @version 1.0 G$[Hm\V  
*/ )8`i%2i=  
public class ShellSort implements SortUtil.Sort{ -)Hc^'.  
8bdx$,$k  
/* (non-Javadoc) Ei4Iv#Oi`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V<ii  
*/ ^6QzaC3  
public void sort(int[] data) { `b KJ  
for(int i=data.length/2;i>2;i/=2){ ENy$sS6[D  
for(int j=0;j insertSort(data,j,i); jx#9  
} L0;XzZ S  
} ~5o2jTNy`p  
insertSort(data,0,1); zyB>peAp6j  
} INEE 37%  
~wQ M ?h  
/** Z]XjN@j"  
* @param data ~7w LnB  
* @param j 8[H bg  
* @param i :;jRAjq"  
*/ .sSbU^U  
private void insertSort(int[] data, int start, int inc) { jbe_r<{  
int temp; ,B#*<_?E5  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); K SJ Ko  
} YQ>O6:%  
} H6hhU'Kxf8  
} E> N[  
>mj WC) U  
} aMJJ|iiU  
aUi^7;R&<  
快速排序: k'NP+N<M  
`$MO;Fv,G  
package org.rut.util.algorithm.support; @D$ogU,#  
?_d3|]N  
import org.rut.util.algorithm.SortUtil; }.D adV  
XZ<8M}Lg  
/** AquO#A[,#  
* @author treeroot f\?1oMO\  
* @since 2006-2-2 = \M6s  
* @version 1.0 n?QglN  
*/ p_i',5H(  
public class QuickSort implements SortUtil.Sort{ = &^tfD  
 K{9  
/* (non-Javadoc) +k V$ @qH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %<|cWYM="z  
*/ s_3a#I  
public void sort(int[] data) { 7NkMr8[}F  
quickSort(data,0,data.length-1); LbuhKL}VN  
} KB {IWu  
private void quickSort(int[] data,int i,int j){ sB!6"D5  
int pivotIndex=(i+j)/2; :<v@xOzxx  
file://swap q| UO]V  
SortUtil.swap(data,pivotIndex,j); ]*D~>q"#\  
3G'cDemc  
int k=partition(data,i-1,j,data[j]); M5 P3;  
SortUtil.swap(data,k,j);  81!gp7c  
if((k-i)>1) quickSort(data,i,k-1); t$b5,"G1  
if((j-k)>1) quickSort(data,k+1,j); <Y"HC a{  
Z>~7|vl  
} :1;"{=Yx}  
/** p!EG:B4  
* @param data Z= =c3~  
* @param i |Y v,zEY)  
* @param j l=L(pS3 ~  
* @return U|b)Bw<P  
*/ ZAgtVbO7  
private int partition(int[] data, int l, int r,int pivot) { >`<qa!9  
do{ !DD4Bqez  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); lQv (5hIm  
SortUtil.swap(data,l,r); c9djBUAk&  
} \wR\i^  
while(l SortUtil.swap(data,l,r); *;l[|  
return l; 7=s7dYlu  
} So= BcX-  
vGOO"r(xL  
} j8%Y[:~D  
nUK;M[  
改进后的快速排序: ?@<Tzk]a.  
gX| \O']6  
package org.rut.util.algorithm.support; >vXS6`;  
^a$L9p(  
import org.rut.util.algorithm.SortUtil; 8tO.o\)h  
$-.*8*9  
/** TPLv]$n  
* @author treeroot %r&36d'  
* @since 2006-2-2 39d$B'"<1  
* @version 1.0 >*\yEH9"  
*/ g1 =>u  
public class ImprovedQuickSort implements SortUtil.Sort { Qjd]BX;  
Zy|u5J  
private static int MAX_STACK_SIZE=4096; FD[4?\W]#  
private static int THRESHOLD=10; 8U n0<+b  
/* (non-Javadoc) >DN^',FEm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3S1{r )[j  
*/ 4O:HT m  
public void sort(int[] data) { ,t!I%r  
int[] stack=new int[MAX_STACK_SIZE]; 1kD1$5  
pktnX-Slt  
int top=-1; \Y`psSf+  
int pivot; Ua4P@#cU  
int pivotIndex,l,r; :  @$5M  
9Q1w$t~Y  
stack[++top]=0; N,.awA{  
stack[++top]=data.length-1; g`~;"%u7cn  
5H,(\Xd  
while(top>0){ i^8w0H<-@v  
int j=stack[top--]; /B|"<`-H  
int i=stack[top--]; Qwp2h"t`  
m*\LO%s]E  
pivotIndex=(i+j)/2; Gyrc~m[$  
pivot=data[pivotIndex]; V{ ~~8b1E  
c7R&/JV  
SortUtil.swap(data,pivotIndex,j); c=^69>w  
BU7QK_zT:  
file://partition c[$i )\0  
l=i-1; )|#ExyRO  
r=j; $.31<@T7  
do{ 'v=BAY=Ef  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ap,zC)[  
SortUtil.swap(data,l,r); vu&ny&=`  
} [^XD @  
while(l SortUtil.swap(data,l,r); $`R=Q  
SortUtil.swap(data,l,j); U[:=7UABU?  
)@] W=  
if((l-i)>THRESHOLD){ PnL?zae  
stack[++top]=i; [z6P]eC7  
stack[++top]=l-1; :Zo^Uc:*w  
} b< []z,  
if((j-l)>THRESHOLD){ [{#n?BT  
stack[++top]=l+1; P.(z)!]  
stack[++top]=j; HGi%b5:<=M  
} t3C#$ >  
q^7=/d8  
} B*P;*re  
file://new InsertSort().sort(data); y<#Hq1  
insertSort(data); ;bL?uL  
} s.XxYXR\  
/** r{_1M>F D!  
* @param data >GzH_]  
*/ T'9M  
private void insertSort(int[] data) { qD /h/  
int temp; r"p"UW9og  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _X@ Q`d  
} 88 ca  
} t{`-G*^  
} BqdGU-Q  
ca,c+5  
} ;yCtk ~T%  
]7RK/Zu i  
归并排序: n A%8 bZ+  
xK4E+^ b  
package org.rut.util.algorithm.support; |CK/-UG}  
#-{ljjMQI  
import org.rut.util.algorithm.SortUtil; \`%#SmQF  
Yp8XZ 3  
/** V8b^{}nxt  
* @author treeroot 1^[]#N-Bu  
* @since 2006-2-2 NxB/U_j  
* @version 1.0 ;=@?( n  
*/ }uO2 x@  
public class MergeSort implements SortUtil.Sort{ 4{b/Nv:b  
v+dT7* ^@  
/* (non-Javadoc) l1%*LyD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZmI#-[/  
*/ QkLcs6)R  
public void sort(int[] data) { T b*Q4:r"  
int[] temp=new int[data.length]; $-6[9d-N  
mergeSort(data,temp,0,data.length-1); \lyHQ-gWhc  
} = N:5#A  
.TNJuuO  
private void mergeSort(int[] data,int[] temp,int l,int r){ 6)FM83zk)K  
int mid=(l+r)/2; pBn;:  
if(l==r) return ; yA`,ns&n  
mergeSort(data,temp,l,mid); :K(+ KN(  
mergeSort(data,temp,mid+1,r); f917F.1 I  
for(int i=l;i<=r;i++){ k9c`[M  
temp=data; Z'm( M[2K  
} D2io3Lo$ov  
int i1=l; }/g1  
int i2=mid+1; G {a;s-OA3  
for(int cur=l;cur<=r;cur++){ Yi19VU|/  
if(i1==mid+1) G B>T3l"  
data[cur]=temp[i2++]; akwS;|SZ  
else if(i2>r) "IWL& cH3  
data[cur]=temp[i1++]; w"A>mEex<  
else if(temp[i1] data[cur]=temp[i1++]; "c![s%  
else $]?M[sL\N7  
data[cur]=temp[i2++]; W=2]!%3#  
} dQ#oY|a  
} H{_6e6`e.  
fvG4K(  
} u:,B&}j  
: %U lNk  
改进后的归并排序: 0.1?hb|p5T  
6*I=% H|  
package org.rut.util.algorithm.support; q@Zeu\T,*#  
nzU0=w}V  
import org.rut.util.algorithm.SortUtil; 1W9uWkk_d  
9FF  
/** ^a#W|-:  
* @author treeroot '2{60t_A  
* @since 2006-2-2 ntZHO}'  
* @version 1.0 j3>&Su>H4  
*/ 8Z 0@-8vi  
public class ImprovedMergeSort implements SortUtil.Sort { R]o2_r7N"}  
q-e3;$  
private static final int THRESHOLD = 10; CZ(fP86e  
T\Jm=+]c!  
/* Owh:(EJ"d  
* (non-Javadoc) Tb] h<S  
* \x"BgLSE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \JNWL yw  
*/ K{FBrh  
public void sort(int[] data) { VxU{ZD~<Z"  
int[] temp=new int[data.length]; ,~NJ}4wP  
mergeSort(data,temp,0,data.length-1); .;&4'ga4  
} i^rHZmT  
1\5po^Oioy  
private void mergeSort(int[] data, int[] temp, int l, int r) { ZPHatC  
int i, j, k; y"zZ9HQM  
int mid = (l + r) / 2; E FBvi  
if (l == r) ^YEMR C  
return; <h`}I3Ao  
if ((mid - l) >= THRESHOLD) =z}M(<G  
mergeSort(data, temp, l, mid); T`Xz*\}Zb  
else >~T2MlRux  
insertSort(data, l, mid - l + 1); MnptC 1N  
if ((r - mid) > THRESHOLD) ^K^rl 9  
mergeSort(data, temp, mid + 1, r); A.<M*[{q  
else >a: 6umY  
insertSort(data, mid + 1, r - mid); z~;@Mo"*f  
+@\=v}: F  
for (i = l; i <= mid; i++) { IY|>'}UU#  
temp = data; 3[%n@i4H|  
} .?r} 3Ch  
for (j = 1; j <= r - mid; j++) { N$cAX^~  
temp[r - j + 1] = data[j + mid]; q)tNH/  
} S#\Cyn2(t  
int a = temp[l]; 59(} D'lw>  
int b = temp[r]; >< Qp%yT  
for (i = l, j = r, k = l; k <= r; k++) { IpVtbDW  
if (a < b) { U@)WTH6d  
data[k] = temp[i++]; 7#9fcfL  
a = temp; j8ac8J,}c  
} else { A&Cs (e  
data[k] = temp[j--]; wd Di5-A4  
b = temp[j]; tj tN<y  
} &lB>G[t  
} +)7h)uq  
} F>5)Clq  
<ceJ!"L  
/** p%e/>N.P  
* @param data a,[NcdG  
* @param l {CGk9g" `  
* @param i {JW_ZJx  
*/ 9 NqZ&S  
private void insertSort(int[] data, int start, int len) { 4aG}ex-s|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); w-``kID  
} Oi~.z@@  
} !Ee&e~"  
} D*)"?L G  
} 6,skF^   
QQUZneIDp  
堆排序: 2%j"E{J&  
h ?+vH{}j  
package org.rut.util.algorithm.support; BNbz{tbX"  
2O0</^Z%E  
import org.rut.util.algorithm.SortUtil; (vbI4&r  
Dfd%Z;Yu  
/** 4I;$a;R!  
* @author treeroot u:\DqdlU`  
* @since 2006-2-2 {uiL91j.  
* @version 1.0 oF5~|&C  
*/ M V~3~h8  
public class HeapSort implements SortUtil.Sort{ [S[@ Q[zP@  
VqdR  
/* (non-Javadoc) +\MGlsMK@.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YHo*IX')C?  
*/ 8' +I8J0l  
public void sort(int[] data) { C0'_bTfB  
MaxHeap h=new MaxHeap(); D;X/7 p|>  
h.init(data); \xOv9(  
for(int i=0;i h.remove(); aX35^K /  
System.arraycopy(h.queue,1,data,0,data.length); 2;YL+v2  
} vi0nJ -Xg  
N`5 mPE  
private static class MaxHeap{ _(:bGI'.m  
x]|-2t  
void init(int[] data){ Ba;tEF{X  
this.queue=new int[data.length+1]; 2r#W#z%vS  
for(int i=0;i queue[++size]=data; Us8nOr>5  
fixUp(size); ?) VBkA5j  
} l~GcD  
} o1u?H4z  
AM4 :xz  
private int size=0; :Pi="  
IsB=G-s  
private int[] queue; Q E*`#r#e  
i  M!=/  
public int get() { MH_3nN  
return queue[1]; Bfr$&?j#  
} g}*F"k4j  
Z<$ y)bf  
public void remove() { ~*ll,<L:  
SortUtil.swap(queue,1,size--); ]llvG \  
fixDown(1); jftf]n&Z(q  
} Z`kI6  
file://fixdown }e&Z"H |  
private void fixDown(int k) { gJuA*^  
int j; EY[J;H_b  
while ((j = k << 1) <= size) { q!}O+(kt  
if (j < size %26amp;%26amp; queue[j] j++; 66Xo3 o  
if (queue[k]>queue[j]) file://不用交换 Ea?u5$>gY"  
break; i^&^eg'.5  
SortUtil.swap(queue,j,k); :<`po4/  
k = j; ,c[f/sT\  
} ^es/xt  
} TllIs&MCe  
private void fixUp(int k) { O\)rp!i  
while (k > 1) { UWq[K&vQZ  
int j = k >> 1; T &kr IZw  
if (queue[j]>queue[k]) R]Pv=fn  
break; M`.v/UQn  
SortUtil.swap(queue,j,k); G^_fbrZjN  
k = j; ;bes#|^F  
} @ykM98K  
} Y%)@)$sK  
WhN~R[LE_  
} Fs;_z9ej-u  
0^&-j.9  
} KJN{p~Q  
e'1}5Ky  
SortUtil: `'M}.q,k~  
wx)Yl1 C  
package org.rut.util.algorithm; c*`= o( S  
0?8{q{ o+  
import org.rut.util.algorithm.support.BubbleSort; p>GxSE)  
import org.rut.util.algorithm.support.HeapSort; =aE!y5  
import org.rut.util.algorithm.support.ImprovedMergeSort; {/SLDyf%Z  
import org.rut.util.algorithm.support.ImprovedQuickSort; ekhx?rz  
import org.rut.util.algorithm.support.InsertSort; 5$L=l  
import org.rut.util.algorithm.support.MergeSort; W&8)yog.  
import org.rut.util.algorithm.support.QuickSort; cAc>p-y%  
import org.rut.util.algorithm.support.SelectionSort; <46fk*  
import org.rut.util.algorithm.support.ShellSort; V<G=pPC'H  
U<mFwJ C]  
/** x6B_5eF  
* @author treeroot h[I~D`q)v  
* @since 2006-2-2 *S=zJyAO  
* @version 1.0 v6`TbIq%  
*/ #&ZwQw  
public class SortUtil { 2';f8JLY  
public final static int INSERT = 1; 0'4V*Y  
public final static int BUBBLE = 2; fI1,L"  
public final static int SELECTION = 3; !_My]>S  
public final static int SHELL = 4; ]-G10p}Ph-  
public final static int QUICK = 5; !L_\6;aP,x  
public final static int IMPROVED_QUICK = 6; %(y0,?*  
public final static int MERGE = 7; q\a'pp9d  
public final static int IMPROVED_MERGE = 8; _qQB.Dzo:  
public final static int HEAP = 9; /4PV<[ :_  
>@9>bI+Q  
public static void sort(int[] data) { 86N"EuH$  
sort(data, IMPROVED_QUICK); x7 l3&;yDv  
} yUzpl[*e^o  
private static String[] name={ 1lLL9l{UVw  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0413K_  
}; MC&sM-/  
;OynkZs)  
private static Sort[] impl=new Sort[]{ Y]gb`z$?  
new InsertSort(), sM$gfFx  
new BubbleSort(), l2LUcI$ x  
new SelectionSort(), aL%amL6CX  
new ShellSort(), ?A7_&=J%  
new QuickSort(), dwAFJhgh  
new ImprovedQuickSort(), KM ;'MlO  
new MergeSort(), 7BDRA},o  
new ImprovedMergeSort(), 7Ta",S@m  
new HeapSort() 8rx"D`{|  
}; W bW@V_rr  
bhWH  
public static String toString(int algorithm){ jk'.Gz  
return name[algorithm-1]; :;(zA_-  
} 251^>x.R  
DYKJVn7w  
public static void sort(int[] data, int algorithm) { 4#^?-6  
impl[algorithm-1].sort(data); \E3e vU  
} !9knF t43  
O>j_xW]V  
public static interface Sort { kLw07&H  
public void sort(int[] data); WfDpeXdO  
} J` J^C  
kt*""&R  
public static void swap(int[] data, int i, int j) { 1IRlFC  
int temp = data; aOH$}QnS  
data = data[j]; Eu^? e  
data[j] = temp; 5s'oVO*hW  
} {q-<1|xj/J  
} "Wz#<! .r  
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10+5=?,请输入中文答案:十五