JA
V
A
鍩虹
1
銆佸彉閲忓懡鍚嶆湁鍝簺瑙勫畾锛?/p>
鏁板瓧
瀛楁瘝
涓嬪垝绾?/p>
$
绗﹀彿缁勬垚
涓嶅彲浠ヤ娇鐢ㄤ繚鐣欏瓧鍜屽叧閿瓧锛屾暟瀛椾笉鑳藉紑澶?/p>
2
銆佹寚鍑轰笅闈㈢▼搴忎腑鐨勭紪璇戦敊璇紝骞舵洿姝?/p>
int
lenght = 10
锛?/p>
System.out.println(length);
int
&size = 2;
System.out.println(&size);
int
age ;
System.out.println(age);
3
銆佹寚鍑轰笅闈㈢▼搴忚繍琛岃緭鍑虹粨鏋?/p>
int i = 100
锛?/p>
j = 200
锛?/p>
boolean
b = (i>j)&&(i++>100);
false 100
System.out.println(b);
System.out.println(i);
4
銆佹寚鍑轰笅闈㈣繍琛岃緭鍑虹粨鏋?/p>
int a =100
锛?/p>
String msg =
鈥?/p>
a=
鈥?/p>
+a;100100
System.out.ptintln(msg);
msg =
鈥溾�?/p>
+100+200;
System.out.ptintln(msg);100200
msg = 100+200+
鈥濃�?/p>
;
System.out.ptintln(msg);300
5
銆佽绠�杩?/p>
for
璇彞鐨勬墽琛屾祦绋?/p>
for(
琛ㄨ揪寮?/p>
1
锛涜〃杈惧紡
2
锛涜〃杈惧紡
3){
璇彞鍧?/p>
}
琛ㄨ揪寮忎竴鍙橀噺鍒濆鍖栵紝鍙墽琛屼竴娆★紝鍚屾椂鍒ゆ柇琛ㄨ揪寮?/p>
2
锛屽鏋滀负
false
绋嬪簭缁撴潫锛屽鏋?/p>
涓?/p>
true
鎵ц璇彞鍧楋紝
鐒跺悗鎵ц琛ㄨ揪
3
锛?/p>
琛ㄨ揪寮?/p>
2
杩涜鍒ゆ柇
boolean
鍊硷紝
鍚岀悊鍙緱
濡傛灉涓?/p>
false
绋嬪簭缁撴潫锛屽鏋滀负
true
鎵ц璇彞鍧楋紝
6
銆佽緭鍑?/p>
2-100
涔嬪唴鐨勬墍鏈夎川鏁?/p>
int count=0
锛?/p>
for
锛?/p>
var i=2;i<=100;i++){for(var j=2;j<i;j++){if(i%j==0){count++;}}if(count=0){
System.out.println(
鈥?/p>
涓虹礌鏁?/p>
鈥?/p>
)}}
7
銆佸啋娉℃帓搴?/p>
Int[] arr={1,2,3,4,5,6,7};
For(var i=0;i<=arr.length-1;i++){for(var
a=0;a<arr.length-1-x;a++){if(arr[y]>arr[y+1]){temp=arr[y];arr[y]=arr[y+1];arr[y+1]=temp}}}
8
銆侀殢鏈虹敓鎴愰暱搴︿负
5
鐨?/p>
int
绫诲瀷鐨勬暟缁勶紝骞惰緭鍑?/p>
Int[] arr={0,1,2,3,4,5,6,7,8,9}; TreeSet tr=new TreeSet();while(tr.size()<5){int
i=(int)Math.random()*10;if(i<arr.length){tr.add(arr[i])}}system.out.println(tr);
Int i=0;int[] arr;While(true){int x=(int)Math.random()*10; arr[i]=x;i++;if(i<5){break;}}
9
銆?/p>
浠�
涔堟槸绫?/p>
鍙傝�冪瓟妗堬細
绫绘槸涓�涓蹇?/p>
(
鍚嶈瘝
)
鎶借薄鐨勫畾涔夈�?/p>
绫诲畾涔変簡璇ョ被鍨嬪璞＄殑鏁版嵁缁撴瀯锛岀О涔嬩负鈥滄垚鍛樺彉閲忊�濓紝鍚屾椂锛屼篃瀹氫箟浜嗕竴浜涘彲浠ヨ璋?/p>
鐢ㄧ殑鍔熻兘锛岀О涔嬩负鈥滄柟娉曗�濄�?/p>
绫绘槸鐢ㄤ簬鏋勫缓瀵硅薄鐨勬ā鏉匡紝
瀵硅薄鐨勫疄璐ㄥ氨鏄唴瀛樹腑涓�鍧楀瓨鍌ㄥ尯鍩燂紝
鍏舵暟鎹粨鏋勭敱瀹氫箟瀹?