[Solution] Degree of Polynomial CodeChef Solution | CodeChef Problem Solution 2022

[Solution] Degree of Polynomial CodeChef Solution | CodeChef Problem Solution 2022

In mathematics, the degree of polynomials in one variable is the highest power of the variable in the algebraic expression with non-zero coefficient.

Chef has a polynomial in one variable x$x$ with N$N$ terms. The polynomial looks like A0⋅x0+A1⋅x1+…+AN−2⋅xN−2+AN−1⋅xN−1$A_0\cdot x^0+A_1\cdot x^1+\dots +A_{N-2}\cdot x^{N-2}+A_{N-1}\cdot x^{N-1}$ where Ai−1$A_{i-1}$ denotes the coefficient of the ith$i^{th}$ term xi−1$x^{i-1}$ for all (1≤i≤N)$(1\le i\le N)$.

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Find the degree of the polynomial.

Note: It is guaranteed that there exists at least one term with non-zero coefficient.

Input Format

• First line will contain T$T$, number of test cases. Then the test cases follow.
• First line of each test case contains of a single integer N$N$ - the number of terms in the polynomial.

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• Second line of each test case contains of N$N$ space-separated integers - the ith$i^{th}$ integer Ai−1$A_{i-1}$ corresponds to the coefficient of xi−1$x^{i-1}$.

Output Format

For each test case, output in a single line, the degree of the polynomial.

Constraints

• 1≤T≤100$1\le T\le 100$
• 1≤N≤1000$1\le N\le 1000$
• −1000≤Ai≤1000$-1000\le A_i\le 1000$
• Ai≠0$A_i\ne 0$ for at least one (0≤i<N)$(0\le i<N)$.