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guessNumberHigherOrLower.js
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guessNumberHigherOrLower.js
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// LeetCode #374. Guess Number Higher or Lower
/* Instructions
We are playing the Guess Game. The game is as follows:
I pick a number from 1 to n. You have to guess which number I picked.
Every time you guess wrong, I will tell you whether the number I picked is higher or lower than your guess.
You call a pre-defined API int guess(int num), which returns three possible results:
-1: Your guess is higher than the number I picked (i.e. num > pick).
1: Your guess is lower than the number I picked (i.e. num < pick).
0: your guess is equal to the number I picked (i.e. num == pick).
Return the number that I picked.
Example 1:
Input: n = 10, pick = 6
Output: 6
Example 2:
Input: n = 1, pick = 1
Output: 1
Example 3:
Input: n = 2, pick = 1
Output: 1
Constraints:
1 <= n <= 231 - 1
1 <= pick <= n
*/
// Solution
const guessNumber = n => {
for (let i = 1; i <= n; i++) {
if (guess(i) === 0) {
return i
}
}
}
// Explanation
// Loop through 1 to n.
// Check if the guess is correct for each number, and if it is, return that number.