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added 107 characters in body

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edited Jul 19, 2018 at 14:41

C# (.NET Core), 10085 bytes

c=>s=>{var r=new int[c,c];for(int i=0,j;i++<c;;s>0;)for(j=0;j<c;)r[iint j=s-1-;j-->0;)r[s,j++]=i>s||j>s?0:i>j?i:j;returnj]=r[j,s]=s+1;return r;}

A port of Kevin Cruijssen's answer, which was much better than mine.

c=>s=>{var r=new int[c,c];for(int i=0,j;i++<c;)for(j=0;j<c;)r[i-1,j++]=i>s||j>s?0:i>j?i:j;return r;}

c=>s=>{var r=new int[c,c];for(;s>0;)for(int j=s--;j-->0;)r[s,j]=r[j,s]=s+1;return r;}

A port of Kevin Cruijssen's answer, which was much better than mine.

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created Jul 19, 2018 at 14:36

c=>s=>{var r=new int[c,c];for(int i=0,j;i++<c;)for(j=0;j<c;)r[i-1,j++]=i>s||j>s?0:i>j?i:j;return r;}