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Copy pathNumberLineJumps.java
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Copy pathNumberLineJumps.java
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42 lines (35 loc) ยท 934 Bytes
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package hackerrank;
public class NumberLineJumps {
static String kangaroo(int x1, int v1, int x2, int v2) {
//sol1
//while๋ฌธ ์ฌ์ฉ
//๊ฐ๊ฐ ๋ช ๋ฒ ๋์ ํฉ์ ํ๋์ง ํ์๋ฅผ ์ธ๊ธฐ์ํด idx1, idx2๋ณ์๋ฅผ ๋๊ณ 1์ฉ ์ฆ๊ฐ์์ผฐ๋ค.
//x1์ด x2๋ณด๋ค ์ปค์ง๋ฉด ๋ฐ๋ผ์ก์ ์ ์์ผ๋ while๋ฌธ ์ข
๋ฃ
/*
int idx1 = 0;
int idx2 = 0;
while(x1 <= x2){
if(idx1 == idx2 && x1 == x2) return "YES";
x1 += v1;
idx1++;
x2 += v2;
idx2++;
}
return "NO";
*/
//sol2 : while ์กฐ๊ฑด์ ๋ฌดํ ๋ฐ๋ณต
while (true) {
if (v1 <= v2) {
return "NO";
}
x1 += v1;
x2 += v2;
if (x1 == x2) return "YES";
if (x1 > x2) return "NO";
}
}
public static void main(String[] args) {
System.out.println(kangaroo(0, 3, 4, 2) + ", ans: YES");
System.out.println(kangaroo(0, 2, 5, 3) + ", ans: NO");
}
}