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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。 qL!pDZk  
插入排序: k:`yxxYIh  
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package org.rut.util.algorithm.support; }m.45n/  
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import org.rut.util.algorithm.SortUtil; KyRcZ"  
/** y9Q.TL>=[  
* @author treeroot \2y [Hy?  
* @since 2006-2-2 zXv2plw(  
* @version 1.0 )SWLX\b  
*/ ![aa@nOSa  
public class InsertSort implements SortUtil.Sort{ K\^S>dV  
JR4fJG  
/* (non-Javadoc) :z%q09.)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %1kIaYZ  
*/ )8JM.:,  
public void sort(int[] data) { 78t:ge eX  
int temp; yo!Y%9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Dq9*il;'  
} rc7^~S]5  
} HV8=b"D"  
} AP/#?   
,^&amWey  
} ->a |  
lw_PQ4Hp  
冒泡排序: qPgny/(  
1HBXD\!  
package org.rut.util.algorithm.support; :#Nrypsu  
C;XhnqWv+l  
import org.rut.util.algorithm.SortUtil; $VUX?ii$7=  
%.  W56  
/** e4Q2$ Q@b  
* @author treeroot yuq2)  
* @since 2006-2-2 )PjU=@$lI  
* @version 1.0 .CBb%onx  
*/ E8b:MY  
public class BubbleSort implements SortUtil.Sort{ aJ$({ZN\#  
^_G@a,  
/* (non-Javadoc) gE~LPwM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )i$KrN6  
*/ \MB$Cwc  
public void sort(int[] data) { RZqou|ki  
int temp; VqnM>||  
for(int i=0;i for(int j=data.length-1;j>i;j--){ t`E e/L%  
if(data[j] SortUtil.swap(data,j,j-1); x^)W}p"  
} JO&L1<B{v  
} K4Hu0  
} 6=g! Hs{  
} V ^hR%*i'  
O{ |Ug~  
} #= @?)\~  
dc,qQM  
选择排序: -s9()K(vZG  
#,Cz+ k*4  
package org.rut.util.algorithm.support; j},3@TFh  
9 f= ~E8P  
import org.rut.util.algorithm.SortUtil; ygYy [IZ  
J)P7QTC  
/** X v$"B-j  
* @author treeroot cng166}1A  
* @since 2006-2-2 ZFRKzPc {V  
* @version 1.0 80 ckh  
*/ cSYMnB  
public class SelectionSort implements SortUtil.Sort { 5 N:IH@  
 a S ,  
/* "43F.!P  
* (non-Javadoc) CRPE:7,D  
* 9i+`,r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FPukV^  
*/ kt7x}F(?<  
public void sort(int[] data) { EjP9/V G@=  
int temp; l9f%?<2D  
for (int i = 0; i < data.length; i++) { |H>;a@2d  
int lowIndex = i; 5Tq*]Z E  
for (int j = data.length - 1; j > i; j--) { { _~vf  
if (data[j] < data[lowIndex]) { ayQ2#9X}  
lowIndex = j; 8\Hz FB  
} *g[MGyF "  
} Cm;M; ?  
SortUtil.swap(data,i,lowIndex); & 6nLnMF8x  
} Q+ZZwqyxD  
} QVo>Uit   
3a}53? $  
} x%T.0@!8  
8~ u/gM  
Shell排序: Q2<v: *L  
%#C9E kr  
package org.rut.util.algorithm.support; 2BV]@]qB  
ry0YS\W  
import org.rut.util.algorithm.SortUtil; jGe%'A N\  
qIvnPaYW  
/** [G' +s  
* @author treeroot 4|;Ys-Q  
* @since 2006-2-2 $+$4W\-=X  
* @version 1.0 61](a;Di  
*/ zJo?,c  
public class ShellSort implements SortUtil.Sort{ L5r02VzbD  
XvVi)`8!u  
/* (non-Javadoc) /h9v'Y}c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zJov*^T-C  
*/ afE)yu`  
public void sort(int[] data) { $N\k*=  
for(int i=data.length/2;i>2;i/=2){ 8&yI1XM|  
for(int j=0;j insertSort(data,j,i); lN*beOj  
} 7QRkXs  
} fGoJP[ae  
insertSort(data,0,1); wU|jw(  
} ic}mru  
k%V YAON  
/** p4D.nB8  
* @param data {@hJPK8  
* @param j RoNE7|gF:  
* @param i % _nmv  
*/ kLc@U~M  
private void insertSort(int[] data, int start, int inc) { R]3j6\  
int temp; aNP\Q23D  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d|>/eb.R  
} 2}15FXgN  
} '3?-o|v@D  
} o pTH6a  
WjOP2CVv|  
} #HZ W57"  
e8S4=W  
快速排序: Up0kTL  
i6<uj  
package org.rut.util.algorithm.support; AG><5 }  
2D /bMq  
import org.rut.util.algorithm.SortUtil; 5= T$h;O  
),Hr  
/** rE]Nr ;Ys  
* @author treeroot pog   
* @since 2006-2-2 E;wT4 T=  
* @version 1.0 RAWzQE }  
*/ i|m8#*Hd  
public class QuickSort implements SortUtil.Sort{ \i+Ad@)  
*Qyu QF  
/* (non-Javadoc) M4(57b[`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (I/ iD.A  
*/ dh9@3. t  
public void sort(int[] data) { #}l$<7Z U  
quickSort(data,0,data.length-1); n|Ts:>`V  
} %xr'96d  
private void quickSort(int[] data,int i,int j){ 3aU5rbi|B  
int pivotIndex=(i+j)/2; t~ <HFY*w  
file://swap EP^qj j@M  
SortUtil.swap(data,pivotIndex,j); -[}Aka,f!  
#8zC/u\`=  
int k=partition(data,i-1,j,data[j]); (,KzyR=*'  
SortUtil.swap(data,k,j); 6\k~q.U@XI  
if((k-i)>1) quickSort(data,i,k-1); &hrMpD6z6i  
if((j-k)>1) quickSort(data,k+1,j); Lp/'-Y_  
!{fu(E  
} ;YSe:m*  
/** T}/|nOu 5  
* @param data c-_1tSh}  
* @param i P+BGCc%);B  
* @param j Kp^"<%RT  
* @return 5h|aX  
*/ ;" Aj80  
private int partition(int[] data, int l, int r,int pivot) { #<X4RJ  
do{ ',/#|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);  W =;,ls  
SortUtil.swap(data,l,r); Jg)( F|>o  
} Y=?{TX=6<[  
while(l SortUtil.swap(data,l,r); eK5~YM:o  
return l; ug.|ag'R  
} | P`b"x  
^VW]Qr!  
} Bh'!aipk  
^4NRmlb  
改进后的快速排序: vxOnv8(  
(E7"GJ  
package org.rut.util.algorithm.support; ]_|'N7J  
EIfqRRTA  
import org.rut.util.algorithm.SortUtil; y4l-o  
H4sW%nZ0  
/** m(o`;  
* @author treeroot  ;u [:J  
* @since 2006-2-2 #!E`%' s]  
* @version 1.0 q%QvBN  
*/ `\|tXl.  
public class ImprovedQuickSort implements SortUtil.Sort { [oXSjLQm[  
|?ZU8I^vW  
private static int MAX_STACK_SIZE=4096; ycSGv4 )  
private static int THRESHOLD=10; WrcmC$ff  
/* (non-Javadoc)  + K`.ck  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RyU8{-q  
*/ 5D2mZ/  
public void sort(int[] data) { q*5L",  
int[] stack=new int[MAX_STACK_SIZE]; DBG0)=SHy  
?3a=u<  
int top=-1; -#mN/  
int pivot; \4^zY'  
int pivotIndex,l,r; EZ:? (|h  
x2a ?ugQ  
stack[++top]=0; y10W\beJ  
stack[++top]=data.length-1; [PB73q8  
h  Ypj  
while(top>0){ k=mLcP  
int j=stack[top--]; tzfyS#E  
int i=stack[top--]; B9[vv;lzu  
M$.bC0}T  
pivotIndex=(i+j)/2; 60]VOQku  
pivot=data[pivotIndex]; YtKT3u:x  
pUS:HJk|  
SortUtil.swap(data,pivotIndex,j); 7 )[2Ud8  
uF1 4;  
file://partition q,<l3rIn  
l=i-1; 6 rj iZ%  
r=j; xf/K+  
do{ . AOc$Nt  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); s,f2[6\Y  
SortUtil.swap(data,l,r); ms;zC/  
} ,9}JPv4Z  
while(l SortUtil.swap(data,l,r); a'/C)fplL  
SortUtil.swap(data,l,j); Fx}v.A5  
*0Z6H-Do,  
if((l-i)>THRESHOLD){ 3 !8#wn  
stack[++top]=i; f0Q! lMv  
stack[++top]=l-1; AZE%fOG<i  
} jnbR}a=fJ  
if((j-l)>THRESHOLD){ >~Gy+-  
stack[++top]=l+1; qo 7<g*kf~  
stack[++top]=j; Mpyza%zj  
} `?.6}*4@_A  
O`1!&XT{x  
} 5._QI/d)'J  
file://new InsertSort().sort(data); R+0gn/a[G  
insertSort(data); P^=B6>e  
} 0^Vw^]w  
/** a%BC{XX  
* @param data /3k[3  
*/ uL-kihV:-  
private void insertSort(int[] data) { );AtFP0Y  
int temp; E2dS@!]V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jD"nEp-  
} p7Zeudmj  
} 1%vE7a>{  
} _Dqi#0#40p  
Gey-8  
} p/Q< VV  
V"(5U(v{~  
归并排序: -T1R}ew*t  
~Q Q1ZP3  
package org.rut.util.algorithm.support; ~PQR_?1  
568M4xzi  
import org.rut.util.algorithm.SortUtil; XUh&an$  
#o[n.  
/** xu"-Uj1  
* @author treeroot R[6R)#o  
* @since 2006-2-2 r}e(MT:R'  
* @version 1.0 'YG P42#  
*/ K3h];F! ^  
public class MergeSort implements SortUtil.Sort{ lH`c&LL-=!  
l{.PyU5)  
/* (non-Javadoc) *0@Z+'M?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E$4H;SN \  
*/ B8T5?bl  
public void sort(int[] data) { EXjR&"R  
int[] temp=new int[data.length]; 5wh(Qdib  
mergeSort(data,temp,0,data.length-1); "N_@q2zF  
} /O$~)2^h  
EZ/_uj2&SN  
private void mergeSort(int[] data,int[] temp,int l,int r){ ) ?kbHm  
int mid=(l+r)/2; )'g4Ty  
if(l==r) return ; B* 3_m _a  
mergeSort(data,temp,l,mid); !Sy9v  
mergeSort(data,temp,mid+1,r); ".Q]FE@>  
for(int i=l;i<=r;i++){ RrrlfFms  
temp=data; 0Bp0ScE|FA  
} 7Dl^5q.|  
int i1=l; }id)~h_@  
int i2=mid+1; ,wg(}y'  
for(int cur=l;cur<=r;cur++){ .Jg<H %%f  
if(i1==mid+1) n#WOIweInf  
data[cur]=temp[i2++]; ? eI)m  
else if(i2>r) N4-Y0BO  
data[cur]=temp[i1++]; /Us+>vg!  
else if(temp[i1] data[cur]=temp[i1++]; dc~vQDNw[X  
else K%BFR,)g  
data[cur]=temp[i2++]; J0e^v  
} :N^B54o%6  
} s"nntC  
Z ]ZUK  
} fM:bXR2Y'  
AVU'rsXA  
改进后的归并排序: ;sf'"UnL  
5syzh S  
package org.rut.util.algorithm.support; ASMItT  
-:L7iOzgD  
import org.rut.util.algorithm.SortUtil; PIFZ '6gn  
s5{H15  
/** ^mI`P}5Y  
* @author treeroot j!Ys/ D  
* @since 2006-2-2 SI%J+Y7  
* @version 1.0 SJj_e-  
*/ #=Xa(<t  
public class ImprovedMergeSort implements SortUtil.Sort { ujX\^c  
>b3IZ^SB#$  
private static final int THRESHOLD = 10; >dF #1  
1yU!rEH  
/* OEbZs-:  
* (non-Javadoc) c<cYX;O  
* X3gYe-2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TQ/#  
*/ _uJ6Vy  
public void sort(int[] data) { 5HL>2 e[  
int[] temp=new int[data.length]; a04S&ezj  
mergeSort(data,temp,0,data.length-1); jamai8  
}  }l]r-  
WRAv>s9  
private void mergeSort(int[] data, int[] temp, int l, int r) { >[T6/#M  
int i, j, k; }c4F}Cy  
int mid = (l + r) / 2; Ud>hDOJ3  
if (l == r) hN1 [*cF  
return; n],cs  
if ((mid - l) >= THRESHOLD) tC f@v'1t  
mergeSort(data, temp, l, mid); 7|"G 3ck  
else aa!1w93?i  
insertSort(data, l, mid - l + 1); b^8"EBo  
if ((r - mid) > THRESHOLD) _Bn8i(  
mergeSort(data, temp, mid + 1, r); +&_n[;   
else _ J"J[$  
insertSort(data, mid + 1, r - mid); biffBC:q  
ahM? ;p  
for (i = l; i <= mid; i++) { JL:B4 f%}B  
temp = data; yFFNzw{  
} T%}x%9VO7  
for (j = 1; j <= r - mid; j++) { x5U;i  
temp[r - j + 1] = data[j + mid]; ,(c'h:@M  
} l~kxK.Ru  
int a = temp[l]; ^MT20pL  
int b = temp[r]; \vj xCkg{  
for (i = l, j = r, k = l; k <= r; k++) { =PLy^%  
if (a < b) { ;4oKF7]   
data[k] = temp[i++]; hE2{m{^A  
a = temp; t `\l+L  
} else { o1]1I9  
data[k] = temp[j--]; 9@Z++J.^y  
b = temp[j]; ?PB}2*R  
} ;Oqbfl#%  
} [vdC$9z,  
} =E~SaT  
<sGioMr  
/** >6;RTN/P2  
* @param data ;]/cCi  
* @param l JvW!w)$pY  
* @param i ,Qe`(vU*s  
*/ )GC[xo4bg  
private void insertSort(int[] data, int start, int len) { aO\@5i_r  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); dUceZmAl  
} DshRH>7s8  
} :J5CmU $  
} wLQM]$O  
} (%M:=zm  
9 &Od7Cn  
堆排序: /dVcNo3"  
D%'rq  
package org.rut.util.algorithm.support; #M[Cq= 2  
(G"/C7q  
import org.rut.util.algorithm.SortUtil; KiNluGNt  
L=<,+m[!  
/** u C`)?f*I  
* @author treeroot "r{ ^Y??  
* @since 2006-2-2 z]i/hU  
* @version 1.0 m%OX< T!  
*/ #xrE^Txh  
public class HeapSort implements SortUtil.Sort{ @|~D?&<\  
`jDmbD +=  
/* (non-Javadoc) ;wr]_@<~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lCK:5$ z0  
*/ (]<G)+*  
public void sort(int[] data) { q]*:RI?wGT  
MaxHeap h=new MaxHeap(); f6HDfJmE  
h.init(data); sE(mK<{pk  
for(int i=0;i h.remove(); vnz}Pr! c  
System.arraycopy(h.queue,1,data,0,data.length); > Gxu8,_;  
} @/?$ZX/e[  
oX1{~lDJl  
private static class MaxHeap{ opxPK=kJ  
ga91#NWgK  
void init(int[] data){ fbW#6:Y  
this.queue=new int[data.length+1]; Wuji'sxTs  
for(int i=0;i queue[++size]=data; MXpj_+@  
fixUp(size); m=I A/HOR^  
} K:sC6|wG  
} 1FC 1*7A[  
a,p7l$kK  
private int size=0; ch}(v'xv(  
* @j#13.  
private int[] queue; nr{ }yQ u  
O7I|<H/gVE  
public int get() { s^AZ)k~J(  
return queue[1]; 3sGe#s%  
} }Rq-IRa'  
~7=w,+  
public void remove() { Wv)2dD2I  
SortUtil.swap(queue,1,size--); We#O' m  
fixDown(1); KY;E.D`  
} N+ R/ti  
file://fixdown 6~Xe$fP(  
private void fixDown(int k) { ?x &"EhA>  
int j; \LW '6 pQ_  
while ((j = k << 1) <= size) { W*|U  
if (j < size %26amp;%26amp; queue[j] j++; )c<5:c  
if (queue[k]>queue[j]) file://不用交换 ;;- I<TL  
break;  0bk094  
SortUtil.swap(queue,j,k); !ly]{DTmm  
k = j; }+f@$L  
} re} P  
} G;pxB,4s5  
private void fixUp(int k) { $X;fz)u  
while (k > 1) { X<"W@  
int j = k >> 1; :j,e0#+sA  
if (queue[j]>queue[k]) t%<d}QuHW  
break; zc-.W2"Hu  
SortUtil.swap(queue,j,k); <El6?ml@  
k = j; +hS}msu'  
} :ITz\m  
} <)(STo  
xlaBOKa%  
} wXsA-H/`  
QFf lx  
} # S4{,  
21U,!  
SortUtil: 7uRXu>h  
F/w!4,'<?5  
package org.rut.util.algorithm; .Su9fj y%  
'rdg  
import org.rut.util.algorithm.support.BubbleSort; Nl1v*9_x  
import org.rut.util.algorithm.support.HeapSort; "VcG3.  
import org.rut.util.algorithm.support.ImprovedMergeSort; t1 .6+  
import org.rut.util.algorithm.support.ImprovedQuickSort; wBXgzd%L  
import org.rut.util.algorithm.support.InsertSort; 8V3SZ17  
import org.rut.util.algorithm.support.MergeSort; K]q OLtc  
import org.rut.util.algorithm.support.QuickSort; }3!.e  
import org.rut.util.algorithm.support.SelectionSort; ;dYpdy  
import org.rut.util.algorithm.support.ShellSort;  p68) 0  
n2H2G_-L[  
/** ? <slB>8  
* @author treeroot e&u HU8k*  
* @since 2006-2-2 %+9Mr ami  
* @version 1.0 PF- sb&q  
*/ G}\E{VvWh  
public class SortUtil { l$Y7CIH  
public final static int INSERT = 1; %-:6#b z  
public final static int BUBBLE = 2; l>M&S^/s j  
public final static int SELECTION = 3; @Tr8.4  
public final static int SHELL = 4; vf(\?Js ,  
public final static int QUICK = 5; T{j&w%(z  
public final static int IMPROVED_QUICK = 6; _>*$%R  
public final static int MERGE = 7; A_@#V)D2  
public final static int IMPROVED_MERGE = 8; LE!3'^Zq  
public final static int HEAP = 9; E-i rB/0  
I=pT fkTT  
public static void sort(int[] data) { fF8g3|p:  
sort(data, IMPROVED_QUICK); B;':Eaa@  
} R '/Ilz`  
private static String[] name={ E7axINca  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]ba O{pJi  
}; W%.Kr-[?`o  
^r$P&}Z\b  
private static Sort[] impl=new Sort[]{ mi3yiR  
new InsertSort(), e p;_'  
new BubbleSort(), nQvv'%v0   
new SelectionSort(), %c(':vI#  
new ShellSort(), hun/H4f|  
new QuickSort(), l23#"gGb  
new ImprovedQuickSort(), I "9S  
new MergeSort(), !UlG! 820  
new ImprovedMergeSort(), *B`wQhB%  
new HeapSort() [3rvRJ.  
}; V5RfxWtm:  
,y?0Iwf  
public static String toString(int algorithm){ y:Qo:Z~  
return name[algorithm-1]; (3"V5r`*;  
} #G^?4Z a  
r/fLm8+  
public static void sort(int[] data, int algorithm) { [HK[{M =v=  
impl[algorithm-1].sort(data); dGcG7*EX  
} (6 fh[eK86  
xq.,7#3  
public static interface Sort { l>S~)FNwXJ  
public void sort(int[] data); i%0Ml:Y  
} y#^d8 }+  
kL,AY-Iu{@  
public static void swap(int[] data, int i, int j) { X%S?o  
int temp = data; pNI=HHx  
data = data[j]; pVP CxP  
data[j] = temp; {cKKTDN  
} N/mTG2'<  
} C jsy1gA  
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