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Here is the requirement of a problem: Implement int sqrt(int x). Compute and return the truncated square root of x. x is guaranteed to be a non- negative integer. Example 1: Input: 4 Output: 2 Example 2: Input: 8 Output: 2 Explanation: The square root of 8 is 2.82842.., and since we want to return an integer, the decimal part will be truncated. Here is the solution of one programmer: class Solution { public int mysqrt(int x) { if (x == 0) return 0; int left = 1, right = x, ans=right; while (left <= right) { int mid = left + (right - left) / 2; if (mid >= x / mid) { right = mid - 1; ans = mid; } else { left = mid + 1; } } return ans; } } Do you think the above solution is correct? If not, why?

Here is the requirement of a problem: Implement int sqrt(int x). Compute and return the truncated square root of x. x is guaranteed to be a non- negative integer. Example 1: Input: 4 Output: 2 Example 2: Input: 8 Output: 2 Explanation: The square root of 8 is 2.82842.., and since we want to return an integer, the decimal part will be truncated. Here is the solution of one programmer: class Solution { public int mysqrt(int x) { if (x == 0) return 0; int left = 1, right = x, ans=right; while (left <= right) { int mid = left + (right - left) / 2; if (mid >= x / mid) { right = mid - 1; ans = mid; } else { left = mid + 1; } } return ans; } } Do you think the above solution is correct? If not, why?

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Here is the requirement of a problem: Implement int sqrt(int x). Compute and return the truncated square root of x. x is guaranteed to be a non- negative integer. Example 1: Input: 4 Output: 2 Example 2: Input: 8 Output: 2 Explanation: The square root of 8 is 2.82842..., and since we want to return an integer, the decimal part will be truncated. Here is the solution of one programmer: class Solution { public int mysqrt(int x) { if (x == 0) return 0; int left = 1, right = x, ans=right; while (left <= right) { int mid = left + (right - left) / 2; if (mid >= x / mid) { right = mid - 1; ans = mid; } else { left = mid + 1; } } return ans; } } Do you think the above solution is correct? If not, why?
Transcribed Image Text:Here is the requirement of a problem: Implement int sqrt(int x). Compute and return the truncated square root of x. x is guaranteed to be a non- negative integer. Example 1: Input: 4 Output: 2 Example 2: Input: 8 Output: 2 Explanation: The square root of 8 is 2.82842..., and since we want to return an integer, the decimal part will be truncated. Here is the solution of one programmer: class Solution { public int mysqrt(int x) { if (x == 0) return 0; int left = 1, right = x, ans=right; while (left <= right) { int mid = left + (right - left) / 2; if (mid >= x / mid) { right = mid - 1; ans = mid; } else { left = mid + 1; } } return ans; } } Do you think the above solution is correct? If not, why?
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